Inductor

Abstract

The utility model discloses an inductor which comprises an inductor body, conduction terminals are arranged at the two side ends of the inductor body, an auxiliary terminal is arranged on the end face, located between the two conduction terminals, of the inductor body, and the auxiliary terminal is welded to a PCB or other heat dissipation modules. The auxiliary terminal is used for conducting heat of the inductor body out, the auxiliary terminal is a conductor sheet, the auxiliary terminal and the inductor body are integrally formed in a stamping mode, the auxiliary terminal is in direct contact with the surface of the inductor body and completely attached to the surface of the inductor body, and the length of the auxiliary terminal is smaller than or equal to that of the inductor body. The width of the auxiliary terminal is smaller than the distance between the adjacent end faces of the two conduction terminals, the auxiliary terminal is arranged on the inductor body, the auxiliary terminal is welded to a PCB or other heat dissipation modules, heat of the inductor body is conducted out, and the heat dissipation effect of the inductor body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, in particular to an inductor. Background Art

[0002] Consumer electronics are gradually developing towards thinness, high performance and multi-functions while achieving high performance. The performance of electronic products is becoming more and more powerful, while the integration and assembly density are constantly improving. Under these increasingly harsh application conditions, the heating of devices greatly affects the normal operation of electronic devices.

[0003] Due to the limitations of structure and size (length, width and height), existing inductors, especially in charging modules, generate too much heat on the surface of the product, and it is impossible to achieve an ideal cooling effect by reducing the loss of the product. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an inductor, including an inductor body, both side ends of the inductor body are provided with conduction terminals, and the end surface of the inductor body located between the two conduction terminals is provided with an auxiliary terminal.

[0005] Preferably, the auxiliary terminal is welded to a PCB board or a heat dissipation module to conduct away the heat of the inductor body.

[0006] Preferably, the auxiliary terminal is a conductor sheet.

[0007] Preferably, the auxiliary terminal is integrally formed with the inductor body by stamping, and the auxiliary terminal is in direct contact with and completely fitted to the surface of the inductor body.

[0008] Preferably, the length of the auxiliary terminal is less than or equal to the length of the inductor body.

[0009] Preferably, the width of the auxiliary terminal is smaller than the distance between adjacent end surfaces of two conducting terminals.

[0010] Preferably, the outer end surface of the auxiliary terminal extends to the outside of the inductor body, and the height of the outer end surface of the auxiliary terminal is less than or equal to the height of the outer end surface of the conducting terminal.

[0011] Preferably, the auxiliary terminal is bonded to the inductor body by means of a high thermal conductive adhesive, and the auxiliary terminal is completely bonded to the surface of the inductor body.

[0012] Preferably, the auxiliary terminal is an electroplating layer, and the electroplating layer is formed on the surface of the inductor body by electroplating.

[0013] Preferably, the auxiliary terminal may be provided in plurality, and the plurality of auxiliary terminals are all attached to the inductor body.

[0014] Technical effects and advantages of the utility model:

[0015] In the utility model, an auxiliary terminal is arranged on the inductor body, and the auxiliary terminal is welded to a PCB board or other heat dissipation module to conduct the heat of the inductor body and improve the heat dissipation effect of the inductor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The inductor structure provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0017] Figure 2 The inductor structure provided in the embodiment of the present application is shown in FIG. Figure 2 .

[0018] In the figure: 1. Inductor body; 2. Conductive terminal; 3. Auxiliary terminal. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0020] See also Figure 1-Figure 2 In this embodiment, an inductor is provided, including an inductor body 1 , both side ends of the inductor body 1 are provided with conduction terminals 2 , and an auxiliary terminal 3 is provided on the end surface of the inductor body 1 between the two conduction terminals 2 .

[0021] An auxiliary terminal 3 is provided on the inductor body 1, and the auxiliary terminal 3 is welded to a PCB board or a heat dissipation module to conduct the heat of the inductor body 1 away, thereby improving the heat dissipation effect of the inductor body 1.

[0022] In one embodiment, the auxiliary terminal 3 is a conductor sheet, and the auxiliary terminal 3 and the inductor body 1 are stamped into one piece. Before stamping, the conductor sheet is placed in powder, and then a hydraulic stamping machine is used to press the conductor sheet into the iron powder. The auxiliary terminal 3 is in direct contact with the surface of the inductor body 1 and is completely fitted, so as to achieve optimal heat conduction.

[0023] In this embodiment, the length of the auxiliary terminal 3 is less than or equal to the length of the inductor body 1, so that the auxiliary terminal 3 will not affect the size of the inductor body 1, and the width of the auxiliary terminal 3 is less than the distance between the adjacent end faces of the two conductive terminals 2, preventing the auxiliary terminal 3 from contacting the conductive terminal 2, thereby avoiding the influence of the auxiliary terminal 3 on the conductive terminal 2.

[0024] The outer end surface of the auxiliary terminal 3 extends to the outside of the inductor body 1, and the height of the outer end surface of the auxiliary terminal 3 is less than or equal to the height of the outer end surface of the conductive terminal 2, which facilitates welding the auxiliary terminal 3 with the PCB board or other heat dissipation module without affecting the connection of the conductive terminal 2.

[0025] Through the above design, the size of the inductor body 1 changes slightly, and the auxiliary terminal 3 will not affect the installation of the inductor body 1 .

[0026] In another embodiment, the auxiliary terminal 3 is a conductive sheet, which is bonded to the stamped inductor body 1 through a high thermal conductive adhesive. The auxiliary terminal 3 is completely bonded to the surface of the inductor body 1 to improve the heat dissipation effect of the inductor body 1.

[0027] In another embodiment, see Figure 2 As shown, the auxiliary terminal 3 is an electroplating layer, which is formed on the surface of the inductor body 1 by electroplating, and the electroplating layer is welded with a PCB board or other heat dissipation module to improve the heat dissipation effect of the inductor body 1.

[0028] In the present application, the auxiliary terminal 3 can also be set to multiple, and the multiple auxiliary terminals 3 are all attached to the inductor body 1. Each auxiliary terminal 3 is welded to a PCB board or other heat dissipation module, and is welded to the ground end of the PCB board.

[0029] This application also provides a comparative test of an inductor with a heat dissipation terminal and an inductor without a heat dissipation terminal. The two inductors have the same size. The experimental test conditions are: Frequency: 800KHz Vin: 20V Vout: 16.8V Iout: 10A

[0030]

[0031] Under the same test conditions, the surface temperature of the inductor with auxiliary heat dissipation terminals is 15°C lower than that without heat dissipation terminals.

[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An inductor, comprising an inductor body (1), characterized in that: Both side ends of the inductor body (1) are provided with conduction terminals (2), and an auxiliary terminal (3) is provided on the end surface of the inductor body (1) located between the two conduction terminals (2).

2. The inductor according to claim 1, characterized in that: The auxiliary terminal (3) is welded to a PCB board or a heat dissipation module and is used to conduct away the heat of the inductor body (1).

3. An inductor according to claim 2, characterized in that: The auxiliary terminal (3) is a conductor sheet.

4. The inductor according to claim 3, characterized in that: The auxiliary terminal (3) and the inductor body (1) are integrally formed by stamping, and the auxiliary terminal (3) is in direct contact with and completely fitted to the surface of the inductor body (1).

5. The inductor according to claim 4, characterized in that: The length of the auxiliary terminal (3) is less than or equal to the length of the inductor body (1).

6. The inductor according to claim 5, characterized in that: The width of the auxiliary terminal (3) is smaller than the distance between adjacent end faces of the two conducting terminals (2).

7. The inductor according to claim 6, characterized in that: The outer end surface of the auxiliary terminal (3) extends to the outside of the inductor body (1), and the height of the outer end surface of the auxiliary terminal (3) is less than or equal to the height of the outer end surface of the conduction terminal (2).

8. The inductor according to claim 3, characterized in that: The auxiliary terminal (3) is bonded to the inductor body (1) by means of a high thermal conductivity adhesive, and the auxiliary terminal (3) is completely bonded to the surface of the inductor body (1).

9. The inductor according to claim 1, characterized in that: The auxiliary terminal (3) is an electroplating layer, and the electroplating layer is formed on the surface of the inductor body (1) by electroplating.

10. The inductor according to claim 1, characterized in that: The auxiliary terminal (3) may also be provided in plurality, and the plurality of auxiliary terminals (3) are all attached to the inductor body (1).

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