Novel high-frequency large-current inductor
By using a magnetic core body made of manganese-zeb ferrite material and glue filling structure, combined with a multi-roll coil design, the problems of large loss and abnormal noise in inductors under high frequency and high current are solved, achieving more efficient working performance and wider Sensing range.
Patent Information
- Application Number
- CN202420888639.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing inductors have problems such as large loss and heat generation under high frequency and high current conditions, and cannot effectively solve the problem of abnormal sounds caused by overcurrent.
The magnetic core body is integrated molded structure made of manganese-zeb ferrite, and the ring groove of the magnetic core body is filled with glue to fix the coil to ensure that there is no gap between the copper wires. Combined with the multi-roll coil and terminal sheet design, it improves the application. Scope and work efficiency.
It reduces losses and heat generation under high-frequency and high current conditions, improves working efficiency, and effectively solves the abnormal noise problem caused by overcurrent, providing a wider induction range and higher saturation current capability.
Smart Images
Figure CN222281748U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an inductor, in particular to a novel high-frequency and large-current inductor. Background Art
[0002] Inductors play the main roles of filtering, oscillating, delaying, trapping, filtering signals, filtering noise, stabilizing current and suppressing electromagnetic interference in circuits. At present, there are two main types of inductor structures on the market. One is a two-piece structure of manganese-zinc material. This structure has limitations in static inductance and it is basically impossible to produce inductances above 1uH. The other is an integrated alloy inductor, which has a wide range of static inductance and saturation characteristics that are also at the top level in the industry. However, its operating frequency is limited by the characteristics of the alloy material, and it has the problems of large material loss and easy heating. It cannot be used at high frequencies above 300KHz, and the problem of abnormal noise caused by overcurrent cannot be completely solved.
[0003] In summary, the present application aims to provide a new type of inductor with a large inductance range and excellent high-frequency working effect and high current resistance performance. Utility Model Content
[0004] The purpose of the utility model is to provide a new type of high-frequency and high-current inductor in view of the defects existing in the above-mentioned technology. The magnetic core body is an integrated molded structure of manganese-zinc ferrite material, which reduces loss and heat during high-frequency operation and improves work efficiency; the annular groove of the magnetic core body is filled with glue to ensure that there is no gap between the copper wires of the coil, thereby solving the problem of abnormal noise due to overcurrent.
[0005] The purpose of the utility model is achieved as follows: it includes a magnetic core body, a coil and a terminal piece, the terminal piece is connected to the coil, the magnetic core body is provided with an annular groove, the coil is embedded and installed in the annular groove, the annular groove is filled with glue, the coil is fixed in the annular groove, and there is no gap between the coils, the terminal piece is provided with a bending portion, and the bending portion is abutted against the outer surface of the magnetic core body.
[0006] Preferably, the number of turns of the coil is one or more, and the outer shape of the coil is one of rectangular, square, circular or elliptical.
[0007] Preferably, the magnetic core body is integrally formed and is made of manganese-zinc ferrite.
[0008] Preferably, the magnetic core body has a square or rectangular shape.
[0009] The beneficial effects of the utility model are as follows: the magnetic core body is an integrated molded structure of manganese-zinc ferrite material, which reduces loss and heat generation, and improves work efficiency, especially when working with large current and high frequency; the coil can be set with one or more turns according to different specifications, and can adapt to a variety of induction ranges; the annular groove of the magnetic core body is filled with glue to ensure that there is no gap between the coils, thereby solving the problem of abnormal noise due to overcurrent. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the high-frequency and high-current inductor structure of the utility model. Figure 1 ;
[0011] Figure 2 This is a schematic diagram of the high-frequency and high-current inductor structure of the utility model. Figure 2 ;
[0012] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a high-frequency and high-current inductor. DETAILED DESCRIPTION
[0013] The present application provides a novel high-frequency and high-current inductor. The magnetic core body of the present application is an integrated molded structure of manganese-zinc ferrite material, which reduces loss and heat generation, improves work efficiency, and solves the problem that the integrated structure inductor in the prior art is made of alloy material, and its working frequency is limited by the characteristics of the alloy material, and has the problems of large material loss and easy heat generation, and cannot be used at high frequencies above 300KHz; the annular groove of the magnetic core body is filled with glue to ensure that there is no gap between the copper wires of the coil, which solves the problem of abnormal sound caused by overcurrent in the prior art, and the coil can be used in one or more turns, thereby enhancing its scope of application.
[0014] The following is a further description of this implementation case in conjunction with the accompanying drawings:
[0015] Depend on Figure 1 — Figure 3 It can be seen that the present application includes a magnetic core body 1, a coil 2 and a terminal piece 3, wherein the terminal piece 3 is connected to the coil 2, the magnetic core body 1 is provided with an annular groove 110, the coil 2 is embedded and installed in the annular groove 110, the annular groove 110 is filled with glue, the coil 2 is fixed in the annular groove 110, and there is no gap between the copper wires of the coil 2. Usually, when the coil is overcurrent, abnormal sound is generated because when the coil 2 is wound with multiple turns of copper wire, there is a gap between two adjacent turns of copper wire. When the current is overcurrent, the copper wire vibrates slightly, resulting in abnormal sound. In this embodiment, after the coil 2 is installed in the annular groove 110, the annular groove 110 is filled with glue, and the glue will fill the gap between the two copper wires to eliminate the abnormal sound. The terminal piece 3 is provided with a bending portion 310, and the bending portion 310 is attached to the outer surface of the magnetic core body 1.
[0016] Based on the above implementation, preferably, the number of turns of the coil 2 is one or more, and the outer shape of the coil 2 is one of a rectangle, a square, a circle or an ellipse. In this embodiment, the coil 2 can be set to a single turn, and the single turn coil is used for the inductance of small inductance. The coil 2 can also be set to a multi-turn structure according to the demand, and the inductance range can be improved after the number of turns is increased.
[0017] Based on the above implementation, preferably, the magnetic core body 1 is integrally formed and made of manganese-zinc ferrite. The biggest difference between manganese-zinc ferrite and alloy is the loss during high-frequency operation. The alloy is much higher than the ferrite. Large loss will generate heat and reduce the working efficiency of the product. The use of manganese-zinc ferrite can make up for the problem of large loss and easy heating of alloy. This type of product uses a multi-turn coil plus terminal sheet design, and the product inductance range is wide, which can meet the mainstream demand in the market.
[0018] Preferably, the outer shape of the magnetic core body 1 is square or rectangular, and its outer shape can be customized according to user needs.
[0019] A set of comparative data on the use parameters of the inductor in this application and the one-piece alloy inductor on the market is provided below. The specific data is shown in Table 1.
[0020] Table 1
[0021]
[0022]
[0023] The model number "1004-100 manganese zinc 12.5 turns" in Table 1 is the inductor product of the present application, and the model number "MWSA1004S-100 alloy one-piece molding" is the existing product. It can be seen from the measured data that, under the same size and the same inductance, the product of the present application has a significant difference in saturation current (Isat) from the large current inductor of the alloy one-piece molding, and the loss of the technical solution of the present application is smaller than the loss of the one-piece molding alloy inductor currently on the market.
[0024] In actual use, in order to ensure that the active components on the board can work properly, the passive components have a minimum inductance requirement after overcurrent. Therefore, for such passive components (high current inductors), the size of the saturation current (Isat) and the change in inductance after overcurrent are the key parameters for measuring such inductors.
[0025] The "high current" mentioned in this application refers to products with significantly larger saturation current (Isat) for the same size inductor and the same inductance in the industry standard.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
Claims
1. A new type of high-frequency and high-current inductor, comprising a magnetic core body, a coil and a terminal piece, wherein the terminal piece is connected to the coil, and is characterized in that: The magnetic core body is provided with an annular groove, the coil is embedded in the annular groove, the annular groove is filled with glue to fix the coil in the annular groove and to ensure that there is no gap between the copper wires of the coil, and the terminal piece is provided with a bending portion, which is in contact with the outer surface of the magnetic core body.
2. According to claim 1, a novel high-frequency and high-current inductor is characterized in that: The number of turns of the coil is one or more, and the outer shape of the coil is one of a rectangle, a square, a circle or an ellipse.
3. The novel high-frequency and high-current inductor according to claim 2 is characterized in that: The magnetic core body is integrally formed and is made of manganese-zinc ferrite.
4. A novel high-frequency and high-current inductor according to claim 1 or 3, characterized in that: The outer shape of the magnetic core body is square or rectangular.