Highly anti-seismic OBC common mode inductor applied to vehicle

Abstract

The utility model discloses a high anti-seismic OBC common mode inductor applied to vehicle, which comprises an inductor body, a shell, a bottom plate and pouring glue, the inductor body and the bottom plate are assembled, the bottom plate and the shell are assembled, the inductor body is located in a space limited by the bottom plate and the shell, and pins extend out of the bottom plate; the pouring glue is poured into the space to fix all parts of the inductor body and fix the inductor body, the bottom plate and the shell.

Description

Technical Field

[0001] The utility model relates to a vehicle-mounted high-vibration-resistant OBC common-mode inductor, belonging to the technical field of electronic components. Background Art

[0002] OBC common-mode inductors are usually used in common-mode filters in circuits. They consist of two coils wound around each other and can suppress common-mode interference signals in circuits.

[0003] With the development of new energy vehicles, the stability and reliability of their power systems are facing higher challenges. Common-mode inductors play a vital role in improving the reliability of vehicle-mounted power systems. The anti-vibration performance of common-mode inductors is related to the stability of the power system, the waterproof and moisture-proof performance is related to the service life of the circuit, and the product process is related to the cost of vehicle-mounted products.

[0004] Existing common-mode inductors have no casing protection and are exposed to the outside, with poor waterproof, dustproof and moisture-proof performance. The base is installed and fixed by bolts and mounting holes, or the base is bonded to the inductor body by a glue dispensing process. The process is complicated and the cost is high. In addition, the integrity of the device is poor, and there is a risk of debonding and falling apart during the vibration of the car. Utility Model Content

[0005] In view of this, the utility model proposes a vehicle-mounted OBC common-mode inductor with a protective shell, and a base and an inductor body fixed by a glue injection technology, so as to solve the technical problems that the existing vehicle-mounted OBC common-mode inductor has a complicated installation process, poor shock resistance, and is easy to debond and fall apart.

[0006] In order to solve the above technical problems, the utility model proposes the following technical solutions:

[0007] A highly shock-resistant OBC common-mode inductor for vehicle use comprises an inductor body, a shell, a base plate and glue potting, wherein the inductor body is assembled with the base plate, the base plate is assembled with the shell, the inductor body is located in a space jointly limited by the base plate and the shell, and pins extend from the base plate; the glue potting is poured into the space to fix the components of the inductor body, and fixes the inductor body to the base plate and the shell.

[0008] Furthermore, the inductor body includes a magnetic ring and a first coil and a second coil wound around the magnetic ring, and the first coil and the second coil are insulated from each other.

[0009] Furthermore, an insulating partition is provided between the first coil and the second coil.

[0010] Furthermore, a pin outlet hole is provided on the bottom plate, and the coil pins of the inductor body extend out of the pin outlet hole.

[0011] Furthermore, heat dissipation holes are provided on the bottom plate.

[0012] Furthermore, the bottom plate and the outer shell are assembled by snap fit.

[0013] Furthermore, a protruding snap portion is provided at the edge of the bottom plate, and a slot adapted to the snap portion is provided at the bottom edge of the outer shell. The snap fit is achieved through the cooperation of the slot and the snap portion.

[0014] Furthermore, the top of the outer shell is an arc-shaped top.

[0015] Furthermore, the magnetic ring is a nano-crystalline magnetic ring with a shell.

[0016] Furthermore, the bottom plate and the outer shell are plastic structural parts.

[0017] The beneficial effects of the technical solution of the present utility model are reflected in: good device integrity, moisture-proof and dust-proof, with high seismic resistance, capable of resisting the amplitude generated during vehicle driving, and effectively ensuring the stability and reliability of the in-vehicle power supply system. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the in-vehicle high-seismic OBC common-mode inductor according to an embodiment of the present utility model.

[0019] Figure 2 It is an exploded view of the structure of the in-vehicle high-seismic OBC common-mode inductor according to an embodiment of the present utility model.

[0020] Figure 3 It is a schematic diagram of the bottom plate structure of the in-vehicle high-seismic OBC common-mode inductor according to an embodiment of the present utility model.

[0021] Description of the reference numerals: 1 - bottom plate, 11 - pin outlet hole, 12 - heat dissipation hole, 13 - snap portion; 2 - outer shell, 21 - slot; 31 - first coil, 32 - second coil, 33 - magnetic ring, 34 - insulating partition, 35 - pin; 4 - potting. Detailed Embodiments

[0022] The present utility model will be further described below in conjunction with the accompanying drawings, specific embodiments, and examples. The purpose of providing the examples is only for illustration and not for any limitation. Additionally, for the spatial orientation terms such as "left", "right", "top", and "bottom" used in the description of the technical solution of the present utility model, they are for facilitating the description of the relative positional relationship between the components of the product, and do not represent that the product has only the orientation shown in the figure. During the actual use process, as the orientation of the product changes, the spatial-related descriptions used to describe its orientation should also be interpreted in a similar manner. Furthermore, terms such as "first" and "second" are only used to distinguish components, and it should be understood that these components should not be restricted by such terms. They do not inherently mean that these elements have the aforementioned ordinal numbers, nor do they represent the arrangement order of one component and another component or the order in the manufacturing method.

[0023] An embodiment of the present utility model provides a vehicle-mounted OBC common-mode inductor with high seismic performance. As Figure 1 shown is a schematic diagram of the vehicle-mounted OBC common-mode inductor, Figure 2 and Figure 1 is an exploded view of the structure of the vehicle-mounted OBC common-mode inductor. Referring to Figure 2 , the vehicle-mounted OBC common-mode inductor includes a bottom plate 1, a housing 2, an inductor body, and potting glue 4; the inductor body includes a first coil 31, a second coil 32, and a magnetic ring 33. The first coil 31 and the second coil 32 are respectively wound at different positions of the magnetic ring 33 and are separated by an insulating partition 34 provided inside the magnetic ring. The first coil 31 and the second coil 32 are respectively located on the left and right sides of the insulating partition 34; the inductor body is assembled with the bottom plate 1, and the bottom plate 1 is assembled with the housing 2. The inductor body is located in the space jointly restricted by the bottom plate 1 and the housing 2, and four pins 35 are led out from the bottom plate; the potting glue 4 is poured into the space surrounded by the bottom plate 1 and the housing 2 to fix the components of the inductor body, and at the same time, the inductor body is fixed to the bottom plate 1 and the housing 2. In this way, compared with the traditional exposed OBC common-mode inductor, the resistance of the OBC common-mode inductor in this embodiment to external impact and vibration is greatly improved. By using potting glue, the insulation between internal components and circuits is improved, which is beneficial to the miniaturization and lightweight of the device; it avoids the direct exposure of components and circuits and improves the waterproof, dustproof, and moisture-proof performance of the device.

[0024] Preferably, the potting glue 4 uses epoxy glue with good thermal conductivity, such as epoxy glue with a thermal conductivity of 1.0 W / (m·K). The glue is poured into the housing in an automated manner and penetrates between the inductor body and the housing, as well as between the components of the inductor body, to firmly fix the components of the inductor body, and at the same time, firmly fix the inductor body to the bottom plate and the housing.

[0025] Referring to Figures 1 to 3, the bottom plate 1 is provided with four pin outlet holes 11, and the four pins 35 of the first coil 31 and the second coil 32 are respectively led out from the four pin outlet holes 11. Preferably, a heat dissipation hole 12 is provided in the middle of the bottom plate 1. This heat dissipation hole 12 is beneficial to the heat dissipation of the product, and can increase the fluidity of the glue when the product is potted with thermally conductive glue, so that the thermally conductive glue penetrates into the coil to export heat, improve the temperature rise of the product, and enhance the efficiency.

[0026] Continue to refer to Figures 1 to 3 , the bottom plate 1 and the outer shell 2 are assembled by snap fit. Specifically, several protruding snap portions 13 are provided at the edge of the bottom plate 1, and a card slot 21 adapted to the snap portion 13 is provided at the bottom edge of the outer shell 2. The snap fit is realized through the cooperation of the card slot 21 and the snap portion 13. The snap portion and the card slot assembly design between the base 1 and the outer shell 2 is simple in assembly, reduces the dispensing process for fixing the base and the inductor body; forms a closed space for the inductor body, making it not easy to leak glue during the potting process; at the same time, ensures the installation position and spacing of the pins, does not increase the height of the inductor, optimizes the safety regulations design while strengthening the integrity of the electronic device, achieving simple, stable and effective positioning assembly, and saving the tooling fixture and labor costs.

[0027] Refer to Figure 1 and Figure 2 , in the preferred embodiment, the top of the outer shell 2 is an arc top. Compared with the traditional square potting shell, during the potting operation, it greatly saves the use of glue volume and saves costs. And the product volume is also correspondingly reduced, providing a wider board layout space for the client.

[0028] In some specific embodiments, the magnetic ring is a nano-crystalline magnetic ring with an outer shell; both the bottom plate 2 and the outer shell 2 are plastic structural parts.

[0029] In summary, the on-vehicle OBC common mode inductor of the embodiment of the present utility model has the following advantages:

[0030] 1) In response to the dust-proof requirements of on-vehicle products, a protective outer shell structure is added, and the base and the outer shell have corresponding card slots and snap structures, which are simple and convenient to assemble and have good consistency;

[0031] 2) In response to the anti-seismic and moisture-proof requirements of on-vehicle products, by potting glue inside the outer shell, the components of the product are integrated, greatly improving the anti-seismic ability;

[0032] 3) In response to the heat dissipation of the product, a heat dissipation hole structure is designed at the bottom, reducing the temperature rise of the product and enhancing the efficiency;

[0033] 4) In response to the electrical properties of the product, the integrated structure overcomes electromagnetic interference, ensures the stable effect of the inductor, and increases the anti-resistance ability;

[0034] 5) Regarding the economic benefits of the product, the outer shell is a special ellipse, which saves the use of rubber material. The base and the outer shell are fixed through a slot and buckle structure, eliminating the dispensing step and saving costs.

[0035] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those skilled in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several equivalent substitutions or obvious variations can still be made, and if the performance or use is the same, they should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. A high anti-seismic OBC common mode inductor applied to vehicles, characterized in that: It includes an inductor body, a housing, a bottom plate and potting glue. The inductor body is assembled with the bottom plate, the bottom plate is assembled with the housing, the inductor body is located in the space jointly restricted by the bottom plate and the housing and the pins extend out from the bottom plate; the potting glue is poured into the space to fix the components of the inductor body and fix the inductor body with the bottom plate and the housing.

2. The high-seismic OBC common-mode inductor according to claim 1, wherein: The inductor body includes a magnetic ring, a first coil and a second coil wound around the magnetic ring, and the first coil and the second coil are insulated from each other.

3. The high-seismic OBC common-mode inductor according to claim 2, wherein: An insulating partition is arranged between the first coil and the second coil.

4. The high-seismic OBC common-mode inductor according to claim 1, characterized in that: Pin outlet holes are formed on the bottom plate, and the coil pins of the inductor body extend out from the pin outlet holes.

5. The high-seismic OBC common-mode inductor according to claim 1, wherein: Heat dissipation holes are formed on the bottom plate.

6. The high-seismic OBC common-mode inductor according to claim 1, wherein: The bottom plate and the housing are assembled in a snap-fit manner.

7. The high-seismic OBC common-mode inductor according to claim 6, characterized in that: A protruding snap portion is arranged at the edge of the bottom plate, and a card slot adapted to the snap portion is arranged at the bottom edge of the housing. The snap-fit assembly is realized through the cooperation of the card slot and the snap portion.

8. The high-seismic OBC common-mode inductor according to claim 1, characterized in that: The top of the housing is an arc-shaped top.

9. The high-seismic OBC common-mode inductor according to claim 2, wherein: The magnetic ring is a nano-crystalline magnetic ring with a housing.

10. The high-seismic OBC common-mode inductor according to claim 1, wherein: The bottom plate and the housing are plastic structural parts.

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