Multipurpose coupling inductor
Through the combined design of multi-purpose coupled inductors, the performance of multiple coupled inductors is realized, which solves the problems of high cost, large area and difficult performance changes in the existing technology, and improves the market competitiveness and performance flexibility of the product.
Patent Information
- Application Number
- CN202421839608.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-31
AI Technical Summary
When using multiple coupled inductors, existing products have high costs and occupy too much internal area of the product, resulting in weak market competitiveness, and the performance of the coupled inductor is single, the installation space is fixed, and performance changes are difficult.
A multi-purpose coupling inductor is adopted to achieve multiple coupling inductor performance through a combined coupling inductor, including large current, low inductor, high inductor and stable current, etc., and a free combination of multiple leads is used to form coupling inductors with different performances.
It reduces the number and installation space of coupled inductors, reduces product cost and volume, improves market competitiveness, and is convenient to change performance and low cost.
Smart Images
Figure CN222896591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power electronics, in particular to a multi-purpose coupling inductor. Background Art
[0002] Coupled inductors refer to two or more inductor coils that are interconnected through a magnetic field. When the current in one coil changes, an induced electromotive force is generated in the other coil. This mutual induction phenomenon is based on Faraday's law of electromagnetic induction and Lenz's law, and the degree of coupling can be measured by the mutual inductance coefficient. Therefore, coupled inductors play an important role in wireless communications, power transmission, sensors, magnetic resonance imaging, data transmission, transformer manufacturing, power isolation and conversion, and circuit design and manufacturing due to their strong high-frequency transmission capabilities, good isolation effects, and excellent power transmission effects. In particular, with the widespread use of solar photovoltaic inverters, charging piles, UPS, and energy storage devices, the market's requirements for the cost and installation space of coupled inductors are becoming increasingly high.
[0003] The current rule for selecting coupled inductors for products is to select the corresponding coupled inductor specifications based on product requirements, and design the most suitable installation space inside the product corresponding to the selected coupled inductor, so as to reduce the cost of coupled inductors and reduce the installation space as much as possible. However, when a product needs to use multiple coupled inductors, it is necessary to select multiple coupled inductors and install them all inside the product. The coupled inductor cost is high, and it takes up too much internal area of the product for installation space, which is not conducive to reducing product costs and miniaturization, resulting in weak product market competitiveness.
[0004] More importantly, after the specifications of the coupled inductor are determined, the performance of the coupled inductor is single and the installation space is fixed. When the circuit on which the coupled inductor is carried needs to be replaced with a coupled inductor of different performance due to expansion or optimization, the only option is to remove the original coupled inductor and redesign the installation space, which is time-consuming, labor-intensive and costly. Utility Model Content
[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a multi-purpose coupled inductor, which can achieve a variety of coupled inductor performances with one combined coupled inductor, reducing the cost and installation space and making it convenient to change the performance.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A multi-purpose coupled inductor comprises a first coupled inductor and a second coupled inductor; the first coupled inductor is formed by two coils connected in series in reverse connection, and the second coupled inductor is formed by two coils connected in series in forward connection;
[0008] The inlet end of the first coupled inductor is provided with at least two first inlet leads, and the outlet end of the first coupled inductor is provided with at least two first outlet leads; the inlet end of the second coupled inductor is provided with at least two second inlet leads, and the outlet end of the second coupled inductor is provided with at least two second outlet leads;
[0009] At least two of the first incoming lead, the first outgoing lead, the second incoming lead and the second outgoing lead are electrically connected to form a combined coupled inductor.
[0010] Further, it includes a mounting shell, a first double-column magnetic core and a second double-column magnetic core; the first column and the second column of the first double-column magnetic core are respectively wound with a coil N4 and a coil N2, and the first column and the second column of the second double-column magnetic core are respectively wound with a coil N3 and a coil N1;
[0011] The mounting shell is provided with a mounting groove corresponding to the combination of the first double-column magnetic core, the coil N4, the coil N2, the second double-column magnetic core, the coil N3 and the coil N1, the combination is fixedly mounted in the mounting groove, and the first and second winding poles of the first double-column magnetic core are respectively aligned with the center lines of the first and second winding poles of the second double-column magnetic core;
[0012] The opposite-name end of the coil N2 and the opposite-name end of the coil N1 are electrically connected to form the first coupled inductor, the same-name end of the coil N2 is used as the output terminal of the first coupled inductor, and the same-name end of the coil N1 is used as the input terminal of the first coupled inductor;
[0013] The same-name end of the coil N4 and the same-name end of the coil N3 are electrically connected to form the second coupled inductor, the opposite-name end of the coil N4 is used as the input terminal of the second coupled inductor, and the opposite-name end of the coil N3 is used as the output terminal of the second coupled inductor.
[0014] Furthermore, one of the first input leads and one of the second input leads are electrically connected to form the combined coupled inductor, one of the first output leads is used as an input terminal of the combined coupled inductor, and one of the second output leads is used as an output terminal of the combined coupled inductor.
[0015] Furthermore, one of the first outgoing leads and one of the second outgoing leads are electrically connected to form the combined coupled inductor, one of the first incoming leads is used as an incoming end of the combined coupled inductor, and one of the second incoming leads is used as an outgoing end of the combined coupled inductor.
[0016] Furthermore, one of the first outgoing leads, one of the first incoming leads and one of the second incoming leads are electrically connected to form the combined coupled inductor, and the first incoming lead is used as an incoming end of the combined coupled inductor, and one of the second outgoing leads is used as an outgoing end of the combined coupled inductor.
[0017] Furthermore, one of the first input leads, one of the second input leads and one of the second output leads are electrically connected to form the combined coupled inductor, and the second input lead is used as the output terminal of the combined coupled inductor, and one of the first output leads is used as the input terminal of the combined coupled inductor.
[0018] Furthermore, one of the first outgoing leads, one of the first incoming leads, one of the second incoming leads and one of the second outgoing leads are electrically connected to form the combined coupled inductor, another of the first outgoing leads is used as an incoming terminal of the combined coupled inductor, and another of the second outgoing leads is used as an outgoing terminal of the combined coupled inductor.
[0019] Further, one of the first outgoing leads and one of the first incoming leads are respectively electrically connected to one of the second outgoing leads and one of the second incoming leads to form the combined coupled inductor, another of the first incoming leads is used as an incoming terminal of the combined coupled inductor, and another of the second outgoing leads is used as an outgoing terminal of the combined coupled inductor.
[0020] The technical solution provided by the utility model may include the following beneficial effects: the first coupling inductor is composed of two coils connected in series in reverse connection, the second coupling inductor is composed of two coils connected in series in forward connection, the first coupling inductor and the second coupling inductor are coupling inductors with different current directions, which can be selected separately; on this basis, at least two first inlet leads are provided at the inlet end of the first coupling inductor, at least two first outlet leads are provided at the outlet end of the first coupling inductor, at least two second inlet leads are provided at the inlet end of the second coupling inductor, and at least two second outlet leads are provided at the outlet end of the second coupling inductor, so that the first inlet lead, the first outlet lead, the second inlet lead and the first outlet lead are used to connect the first coupling inductor to the second coupling inductor. The two outgoing leads are freely combined and electrically connected, and the first coupled inductor and the second coupled inductor are combined into a new coupled inductor, so that a combined coupled inductor with different inductance and current can be formed. As the number of the first incoming lead, the first outgoing lead, the second incoming lead and the second outgoing lead increases, a plurality of coupled inductor performances can be achieved by sharing a combined coupled inductor, such as a coupled inductor with large current and low inductance, a coupled inductor with high inductance and a coupled inductor with stable current and low inductance. Therefore, when a product needs to use a plurality of coupled inductors, the number and installation space of the coupled inductors are greatly reduced, thereby reducing the cost and volume of the product and improving market competitiveness. More importantly, when a product only needs a single coupled inductor performance, if the product is expanded or optimized later, the performance of the coupled inductor can be changed by simply changing the electrical connection method of the first incoming lead, the first outgoing lead, the second incoming lead and the second outgoing lead, without the need to dismantle the original coupled inductor and redesign the installation space. The performance change is convenient and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the structure of a multi-purpose coupled inductor in one embodiment of the utility model. Figure 1 .
[0022] Figure 2 Yes Figure 1 The equivalent circuit diagram of a multi-purpose coupled inductor is shown.
[0023] Figure 3 Yes Figure 1 The structure of a multi-purpose coupled inductor is shown in FIG. Figure 2 .
[0024] Figure 4 Yes Figure 3 The figure shows an assembly diagram of a multi-purpose coupled inductor.
[0025] Figure 5 Yes Figure 2 The electrical connection relationship equivalent circuit of a multi-purpose coupled inductor is shown in FIG. Figure 1 .
[0026] Figure 6Yes Figure 2 The electrical connection relationship equivalent circuit of a multi-purpose coupled inductor is shown in FIG. Figure 2 .
[0027] Figure 7 Yes Figure 2 The electrical connection relationship equivalent circuit of a multi-purpose coupled inductor is shown in FIG. Figure 3 .
[0028] Figure 8 Yes Figure 2 The electrical connection relationship equivalent circuit of a multi-purpose coupled inductor is shown in FIG. Figure 4 .
[0029] Fig. 9 Yes Figure 2 The electrical connection relationship equivalent circuit of a multi-purpose coupled inductor is shown in FIG. Figure 5 .
[0030] Fig.10 Yes Figure 2 The electrical connection relationship equivalent circuit of a multi-purpose coupled inductor is shown in FIG. Figure 6 .
[0031] Among them: a first coupled inductor 1, a second coupled inductor 2, a first incoming lead 11, a first outgoing lead 12, a second incoming lead 21, a second outgoing lead 22, a mounting shell 3, a mounting groove 31, a first double-column magnetic core 4, a second double-column magnetic core 5, a coil N4, a coil N2, a coil N3, and a coil N. DETAILED DESCRIPTION
[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0033] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot 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 one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.
[0035] Combine the following Figures 1 to 10 , describing a multi-purpose coupled inductor according to an embodiment of the utility model.
[0036] A multi-purpose coupled inductor, comprising a first coupled inductor 1 and a second coupled inductor 2; the first coupled inductor 1 is formed by two coils connected in series in reverse connection, and the second coupled inductor 2 is formed by two coils connected in series in forward connection;
[0037] The first coupled inductor 1 has at least two first incoming leads 11 at its incoming end, and at least two first outgoing leads 12 at its outgoing end; the second coupled inductor 2 has at least two second incoming leads 21 at its incoming end, and at least two second outgoing leads 22 at its outgoing end;
[0038] At least two of the first incoming lead 11 , the first outgoing lead 12 , the second incoming lead 21 , and the second outgoing lead 22 are electrically connected to form a combined coupled inductor.
[0039] The utility model proposes a preferred embodiment of a multi-purpose coupled inductor, such as Figure 1 As shown, the first coupling inductor 1 is composed of two coils connected in series in reverse order, and the second coupling inductor 2 is composed of two coils connected in series in forward order. The equivalent circuit diagram is shown in Figure 2As shown, the first coupled inductor 1 and the second coupled inductor 2 are coupled inductors with different current directions and can be selected separately; on this basis, at least two first input leads 11 are provided at the input end of the first coupled inductor 1, at least two first output leads 12 are provided at the output end of the first coupled inductor 1, at least two second input leads 21 are provided at the input end of the second coupled inductor 2, and at least two second output leads 22 are provided at the output end of the second coupled inductor 2, so that the first input leads 11, the first output leads 12, the second input leads 21 and the second output leads 22 are freely combined and electrically connected to connect the first coupled inductor 1 to the output end of the second coupled inductor 2. The inductor 1 and the second coupled inductor 2 are combined into a new coupled inductor, which can form a combined coupled inductor with different inductance and current. As the number of the first incoming lead 11, the first outgoing lead 12, the second incoming lead 21 and the second outgoing lead 22 increases, a plurality of coupled inductor performances can be achieved by sharing a combined coupled inductor, such as a coupled inductor with large current and low inductance, a coupled inductor with high inductance, and a coupled inductor with stable current and low inductance. Therefore, when a product needs to use a plurality of coupled inductors, the number and installation space of the coupled inductors are greatly reduced, thereby reducing the cost and volume of the product and improving market competitiveness. More importantly, when a product only needs a single coupled inductor performance, if the product is expanded or optimized later, the performance of the coupled inductor can be changed by simply changing the electrical connection method of the first incoming lead 11, the first outgoing lead 12, the second incoming lead 21 and the second outgoing lead 22, without the need to dismantle the original coupled inductor and redesign the installation space. The performance change is convenient and the cost is low.
[0040] Further, it includes a mounting shell 3, a first double-column magnetic core 4 and a second double-column magnetic core 5; the first column and the second column of the first double-column magnetic core 4 are respectively wound with a coil N4 and a coil N2, and the first column and the second column of the second double-column magnetic core 5 are respectively wound with a coil N3 and a coil N1;
[0041] The mounting shell 3 is provided with a mounting groove 31 corresponding to the combination of the first double-column magnetic core 4, the coil N4, the coil N2, the second double-column magnetic core 5, the coil N3 and the coil N1. The combination is fixedly mounted in the mounting groove 31. The first winding column and the second winding column of the first double-column magnetic core 4 are respectively aligned with the center lines of the first winding column and the second winding column of the second double-column magnetic core 5.
[0042] The opposite-name end of the coil N2 and the opposite-name end of the coil N1 are electrically connected to form a first coupled inductor 1, the same-name end of the coil N2 is used as an output terminal of the first coupled inductor 1, and the same-name end of the coil N1 is used as an input terminal of the first coupled inductor 1;
[0043] The same-name end of coil N4 and the same-name end of coil N3 are electrically connected to form a second coupled inductor 2 , the opposite-name end of coil N4 is used as an input terminal of the second coupled inductor 2 , and the opposite-name end of coil N3 is used as an output terminal of the second coupled inductor 2 .
[0044] In this embodiment, Figure 3 and 4 As shown, the first double-column magnetic core 4 and the second double-column magnetic core 5 with the coils wound are placed together in the mounting groove 31 of the mounting shell 3, and the mounting groove 31 fixes the combination of the first double-column magnetic core 4, the coil N4, the coil N2, the second double-column magnetic core 5, the coil N3 and the coil N1 as a whole, so that the first and second coils of the first double-column magnetic core 4 are respectively aligned with the center lines of the first and second coils of the second double-column magnetic core 5, so that the coil N1 and the coil N2 are magnetically coupled, and the coil N3 and the coil N4 are magnetically coupled, and then the coil N2 and the coil N1 are reversely connected in series to form a first coupled inductor 1, and the coil N4 and the coil N3 are connected in series to form a second coupled inductor 2, which meets the design requirements.
[0045] Furthermore, one of the first input leads 11 and one of the second input leads 21 are electrically connected to form a combined coupled inductor, one of the first output leads 12 is used as an input terminal of the combined coupled inductor, and one of the second output leads 22 is used as an output terminal of the combined coupled inductor.
[0046] In this embodiment, in order to obtain a combined coupled inductor with high inductance performance, the electrical connection relationship is as follows: Figure 5 As shown, the first coupled inductor 1 and the second coupled inductor 2 are connected in series to increase the inductance.
[0047] Further, one of the first outgoing leads 12 and one of the second outgoing leads 22 are electrically connected to form a combined coupled inductor, one of the first incoming leads 11 is used as an incoming end of the combined coupled inductor, and one of the second incoming leads 21 is used as an outgoing end of the combined coupled inductor.
[0048] In this embodiment, there is another electrical connection relationship that can obtain a combined coupled inductor with high inductance performance, such as Figure 6 As shown, the first coupled inductor 1 and the second coupled inductor 2 are also connected in series to increase the inductance.
[0049] Furthermore, one of the first outgoing leads 12, one of the first incoming leads 11 and one of the second incoming leads 21 are electrically connected to form a combined coupled inductor, and the first incoming lead 11 is used as the incoming end of the combined coupled inductor, and one of the second outgoing leads 22 is used as the outgoing end of the combined coupled inductor.
[0050] In this embodiment, in order to obtain a combined coupled inductor with stable current and low inductance performance, the electrical connection relationship is as follows: Figure 7 As shown, the first coupled inductor 1 and the second coupled inductor 2 are reversely connected in series to reduce the inductance and obtain a stable current.
[0051] Furthermore, one of the first input leads 11, one of the second input leads 21 and one of the second output leads 22 are electrically connected to form a combined coupled inductor, and the second input lead 21 is used as the output terminal of the combined coupled inductor, and one of the first output leads 12 is used as the input terminal of the combined coupled inductor.
[0052] In this embodiment, there is another electrical connection relationship that can obtain a combined coupled inductor with stable current and low inductance performance, such as Figure 8 As shown, the first coupled inductor 1 and the second coupled inductor 2 are also reversely connected in series to reduce the inductance and obtain a stable current.
[0053] Furthermore, one of the first outgoing leads 12, one of the first incoming leads 11, one of the second incoming leads 21 and one of the second outgoing leads 22 are electrically connected to form a combined coupled inductor, another first outgoing lead 12 is used as the incoming end of the combined coupled inductor, and another second outgoing lead 22 is used as the outgoing end of the combined coupled inductor.
[0054] In this embodiment, in order to obtain a combined coupled inductor with high current and low inductance performance, the electrical connection relationship is as follows: Fig. 9 As shown, the first coupled inductor 1 and the second coupled inductor 2 are connected in parallel to increase the inductance and obtain a large current.
[0055] Furthermore, one of the first outgoing leads 12 and one of the first incoming leads 11 are respectively electrically connected to one of the second outgoing leads 22 and one of the second incoming leads 21 to form a combined coupled inductor, another first incoming lead 11 is used as the incoming end of the combined coupled inductor, and another second outgoing lead 22 is used as the outgoing end of the combined coupled inductor.
[0056] In this embodiment, there is another electrical connection relationship that can obtain a combined coupled inductor with high current and low inductance performance, such as Fig.10 As shown, the first coupled inductor 1 and the second coupled inductor 2 are also connected in parallel to increase the inductance and obtain a large current.
[0057] Other structures and operations of a multi-purpose coupled inductor according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.
[0058] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A multi-purpose coupled inductor, characterized in that: It includes a first coupled inductor and a second coupled inductor; the first coupled inductor is formed by two coils connected in series in reverse connection, and the second coupled inductor is formed by two coils connected in series in forward connection; The inlet end of the first coupled inductor is provided with at least two first inlet leads, and the outlet end of the first coupled inductor is provided with at least two first outlet leads; the inlet end of the second coupled inductor is provided with at least two second inlet leads, and the outlet end of the second coupled inductor is provided with at least two second outlet leads; At least two of the first incoming lead, the first outgoing lead, the second incoming lead and the second outgoing lead are electrically connected to form a combined coupled inductor.
2. The multi-purpose coupled inductor according to claim 1, characterized in that: It includes a mounting shell, a first double-column magnetic core and a second double-column magnetic core; the first column and the second column of the first double-column magnetic core are respectively wound with a coil N4 and a coil N2, and the first column and the second column of the second double-column magnetic core are respectively wound with a coil N3 and a coil N1; The mounting shell is provided with a mounting groove corresponding to the combination of the first double-column magnetic core, the coil N4, the coil N2, the second double-column magnetic core, the coil N3 and the coil N1, the combination is fixedly mounted in the mounting groove, and the first and second winding poles of the first double-column magnetic core are respectively aligned with the center lines of the first and second winding poles of the second double-column magnetic core; The opposite-name end of the coil N2 and the opposite-name end of the coil N1 are electrically connected to form the first coupled inductor, the same-name end of the coil N2 is used as the output terminal of the first coupled inductor, and the same-name end of the coil N1 is used as the input terminal of the first coupled inductor; The same-name end of the coil N4 and the same-name end of the coil N3 are electrically connected to form the second coupled inductor, the opposite-name end of the coil N4 is used as the input terminal of the second coupled inductor, and the opposite-name end of the coil N3 is used as the output terminal of the second coupled inductor.
3. The multi-purpose coupled inductor according to claim 1, characterized in that: One of the first input leads and one of the second input leads are electrically connected to form the combined coupled inductor, one of the first output leads is used as an input terminal of the combined coupled inductor, and one of the second output leads is used as an output terminal of the combined coupled inductor.
4. The multi-purpose coupled inductor according to claim 1, characterized in that: One of the first outgoing leads and one of the second outgoing leads are electrically connected to form the combined coupled inductor, one of the first incoming leads is used as an incoming end of the combined coupled inductor, and one of the second incoming leads is used as an outgoing end of the combined coupled inductor.
5. The multi-purpose coupled inductor according to claim 1, characterized in that: One of the first outgoing leads, one of the first incoming leads and one of the second incoming leads are electrically connected to form the combined coupled inductor, and the first incoming leads are used as the incoming end of the combined coupled inductor, and one of the second outgoing leads is used as the outgoing end of the combined coupled inductor.
6. The multi-purpose coupled inductor according to claim 1, characterized in that: One of the first input leads, one of the second input leads and one of the second output leads are electrically connected to form the combined coupled inductor, and the second input lead is used as the output end of the combined coupled inductor, and one of the first output leads is used as the input end of the combined coupled inductor.
7. The multi-purpose coupled inductor according to claim 1, characterized in that: One of the first outgoing leads, one of the first incoming leads, one of the second incoming leads and one of the second outgoing leads are electrically connected to form the combined coupled inductor, another of the first outgoing leads is used as the incoming end of the combined coupled inductor, and another of the second outgoing leads is used as the outgoing end of the combined coupled inductor.
8. The multi-purpose coupled inductor according to claim 1, characterized in that: One of the first outgoing leads and one of the first incoming leads are respectively electrically connected to one of the second outgoing leads and one of the second incoming leads to form the combined coupled inductor, another of the first incoming leads is used as an incoming terminal of the combined coupled inductor, and another of the second outgoing leads is used as an outgoing terminal of the combined coupled inductor.