CN220085806U

CN220085806U - Magnetic element structure

Info

Publication number: CN220085806U
Application number: CN202321749719.6U
Authority: CN
Inventors: 胡攀; 韦虹; 赵福成; 陈东亚; 郭灵聪; 林程峰; 刘军奇; 王晓庆
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Power Train Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Power Train Co Ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-11-24
Anticipated expiration: 2033-07-05

Abstract

The utility model provides a magnetic element structure, which relates to the technical field of magnetic elements and comprises a transformer magnetic core, a framework structure, a primary coil, an OBC secondary coil and a DCDC secondary winding, wherein the transformer magnetic core is inserted into the framework structure, the primary coil and the OBC secondary coil are respectively wound on the framework structure, and the DCDC secondary winding is arranged on the framework structure and covers the primary coil and the OBC secondary coil. The primary coil, the OBC secondary coil and the transformer core may thus form an OBC module, and the primary coil, the DCDC secondary winding and the transformer core may form a DCDC module. Therefore, the OBC module and the DCDC module can be integrated together, and the OBC module and the DCDC module can share the same magnetic core, so that the total volume of each module can be reduced, and the purposes of reducing the cost and facilitating assembly can be realized.

Description

Magnetic element structure

Technical Field

The utility model relates to the technical field of magnetic elements, in particular to a magnetic element structure.

Background

At present, technologies of products such as an On-board charger (OBC) and a direct current-to-direct current (DCDC) converter On a new energy automobile are continuously and iteratively updated, and development trends of the current technologies mainly focus On development in the directions of achieving light weight, low cost, convenience in assembly and the like. However, in the conventional new energy automobile, the modules such as the OBC and the DCDC are large in volume and are respectively mounted on the frame as separate components, so that the space utilization rate is low, the mounting arrangement of the components is not facilitated, and the cost is high.

Disclosure of Invention

The utility model solves the problem of reducing the volume of the modules such as OBC, DCDC and the like so as to achieve the purposes of reducing the cost and facilitating the assembly.

In order to solve the above problems, the present utility model provides a magnetic element structure, which includes a transformer core, a skeleton structure, a primary coil, an OBC secondary coil, and a DCDC secondary winding, wherein the transformer core is inserted into the skeleton structure, the primary coil and the OBC secondary coil are respectively wound on the skeleton structure, and the DCDC secondary winding is mounted on the skeleton structure and covers the primary coil and the OBC secondary coil.

The utility model has the technical effects that: the transformer magnetic core can be inserted in the framework structure, and the primary coil and the OBC secondary coil can be wound on the framework structure, the DCDC secondary winding can be arranged on the framework structure and is covered on the primary coil and the OBC secondary coil, so that the primary coil, the OBC secondary coil and the transformer magnetic core can form an OBC module, and meanwhile, the primary coil, the DCDC secondary winding and the transformer magnetic core can form a DCDC module. Therefore, the OBC module and the DCDC module can be integrated together, and the OBC module and the DCDC module can share the same magnetic core, so that the total volume of each module can be reduced, and the purposes of reducing the cost and facilitating assembly can be realized.

Preferably, the skeleton structure comprises a first skeleton and a second skeleton, the first skeleton and the second skeleton are arranged side by side, one part of the primary coil is wound on the first skeleton, the other part of the primary coil is wound on the second skeleton, one part of the OBC secondary coil is wound on the first skeleton, and the other part of the OBC secondary coil is wound on the second skeleton.

Preferably, the primary coil and the OBC secondary coil are wound in the skeleton structure side by side, and the windings of the primary coil and the windings of the OBC secondary coil are staggered.

Preferably, the transformer magnetic core comprises two U-shaped magnetic cores, the opening ends of the two U-shaped magnetic cores are respectively inserted into the framework structure from two opposite sides of the framework structure, and the opening ends of the two U-shaped magnetic cores are correspondingly connected.

Preferably, the magnetic element structure further comprises a base, the skeleton structure is mounted on the base, the DCDC secondary winding is covered on the skeleton structure and covers the primary coil and the OBC secondary coil, and the DCDC secondary winding is connected with the base.

Preferably, the wire end of the primary coil, the wire end of the OBC secondary coil and the wire end of the DCDC secondary winding are all inserted on the base.

Preferably, the magnetic element structure further comprises a resonant inductor module, wherein the resonant inductor module is mounted on the base, and the resonant inductor module is arranged opposite to the transformer core.

Preferably, the resonant inductor module includes an inductor core, an inductor winding and an insulating sheet, the inductor core is mounted on the base, the inductor winding is wound around the inductor core, and the insulating sheet is disposed between the inductor winding and the inductor core.

Preferably, the inductance core includes two E-shaped cores, one of the E-shaped cores is mounted on the base, and the open ends of the two E-shaped cores are correspondingly connected to each other to form a central post, and the inductance winding is wound around the central post.

Preferably, the inductor core is made of the same material as the transformer core.

Drawings

FIG. 1 is a schematic diagram of a magnetic device structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a split structure of components of a magnetic element structure according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a magnetic element structure according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a second magnetic element structure according to an embodiment of the present utility model;

fig. 5 is a schematic diagram showing the connection of a magnetic element structure according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a transformer core; 11. a U-shaped magnetic core; 2. a framework structure; 21. a first skeleton; 22. a second skeleton; 3. a primary coil; 4. an OBC secondary coil; 5. DCDC secondary winding; 6. a base; 7. a resonant inductor module; 71. an inductance core; 711. an E-type magnetic core; 712. a center column; 72. winding an inductor; 73. an insulating sheet.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

It should be noted that, the terms "first," "second," and the like in the description and the claims of the present utility model and the above drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

Referring to fig. 1, 2 and 5, a magnetic element structure according to an embodiment of the present utility model includes a transformer core 1, a skeleton structure 2, a primary coil 3, an OBC secondary coil 4 and a DCDC secondary winding 5, wherein the transformer core 1 is inserted into the skeleton structure 2, the primary coil 3 and the OBC secondary coil 4 are respectively wound on the skeleton structure 2, and the DCDC secondary winding 5 is mounted on the skeleton structure 2 and covers the primary coil 3 and the OBC secondary coil 4.

Specifically, the magnetic element structure may include a transformer core 1, a bobbin structure 2, a primary coil 3, an OBC secondary coil 4, and a DCDC secondary winding 5, the transformer core 1 may be inserted into the bobbin structure 2, the secondary coil may be wound around the bobbin structure 2, and the OBC secondary coil 4 may also be wound around the bobbin structure 2, and the DCDC secondary winding 5 may be mounted to the bobbin structure 2, and the secondary winding may cover the primary coil 3 and the OBC secondary coil 4.

More clearly, the primary coil 3, the OBC secondary coil 4 and the transformer core 1 may constitute an OBC module, and the primary coil 3, the DCDC secondary winding 5 and the transformer core 1 may constitute a DCDC module. Therefore, the OBC module and the DCDC module can be integrated together, and the OBC module and the DCDC module can share the same magnetic core, so that the total volume of each module can be reduced, the cost can be reduced, and meanwhile, the OBC module and the DCDC module can be conveniently assembled on a frame after being integrated together.

Referring to fig. 1 to 3, in some embodiments, the skeleton structure 2 includes a first skeleton 21 and a second skeleton 22, the first skeleton 21 and the second skeleton 22 are disposed side by side, a portion of the primary coil 3 is wound around the first skeleton 21, another portion of the primary coil 3 is wound around the second skeleton 22, and a portion of the OBC secondary coil 4 is wound around the first skeleton 21, and another portion of the OBC secondary coil 4 is wound around the second skeleton 22.

Specifically, as shown in fig. 2 and 3, the forward direction of the X axis in the drawing represents the left direction, the reverse direction of the X axis represents the right direction, the forward direction of the Y axis represents the front direction, the reverse direction of the Y axis represents the rear direction, the forward direction of the Z axis represents the upper direction, and the reverse direction of the Z axis represents the lower direction. The skeleton structure 2 may include a first skeleton 21 and a second skeleton 22, in this embodiment, the first skeleton 21 and the second skeleton 22 are the same shape, the first skeleton 21 and the second skeleton 22 are both frame structures having through holes, and the first skeleton 21 and the second skeleton 22 may be disposed side by side along the X-axis direction, and the axis of the first skeleton 21 may be parallel to the axis of the second skeleton 22.

The primary coil 3 may be formed by winding a plurality of turns, and a portion of the primary coil 3 may be wound around the first bobbin 21, another portion of the primary coil 3 may be wound around the second bobbin 22, and the OBC secondary coil 4 may be formed by winding a plurality of turns, and a portion of the OBC secondary coil 4 may be wound around the first bobbin 21, another portion of the OBC secondary coil 4 may be wound around the second bobbin 22, and may include the DCDC secondary winding 5, and the two DCDC secondary windings 5 are respectively mounted to the first bobbin 21 and the second bobbin 22.

Therefore, by winding the primary coil 3 and the OBC secondary coil 4 around the first bobbin 21 and the second bobbin 22, respectively, so that both the primary coil 3 and the OBC secondary coil 4 are realized as a single-layer winding structure, it is possible to avoid a case where one turn of the primary coil 3 is wound over the other turn of the primary coil 3, and thus it is possible to reduce ac loss.

Referring to fig. 4, in some embodiments, the primary coil 3 and the OBC secondary coil 4 are wound on the skeleton structure 2 side by side, and the windings of the primary coil 3 and the windings of the OBC secondary coil 4 are staggered.

Specifically, the wire winding of primary coil 3 and the wire winding of OBC secondary coil 4 can two lines twine in skeleton texture 2 side by side simultaneously, and primary coil 3 and OBC secondary coil 4 all present the individual layer wire winding tiling at skeleton texture 2 to the wire winding of primary coil 3 and the wire winding of OBC secondary coil 4 can crisscross setting, can make same wire not close to, reduce alternating current loss.

Referring to fig. 1 to 3, in some embodiments, the transformer core 1 includes two U-shaped cores 11, the open ends of the two U-shaped cores 11 are respectively inserted into the frame structure 2 from two opposite sides of the frame structure 2, and the open ends of the two U-shaped cores 11 are correspondingly connected.

Specifically, the transformer core 1 may include two U-shaped cores 11, the open ends of the two U-shaped cores 11 may be inserted into the bobbin structure 2 from opposite sides of the bobbin structure 2, respectively, and the open ends of the two U-shaped cores 11 may be correspondingly connected, preferably, the open ends of the two U-shaped cores 11 may be bonded together, so that the two U-shaped cores 11 may form one gabled core.

So that after a part of the primary coil 3 is wound on one side of the square-shaped magnetic core, another part of the primary coil 3 can be wound on the other side opposite to the square-shaped magnetic core, and likewise, after a part of the OBC secondary coil 4 is wound on one side of the square-shaped magnetic core, another part of the OBC secondary coil 4 can be wound on the other side opposite to the square-shaped magnetic core, thereby improving the power density.

More clearly, the skeleton structure 2 may include a first skeleton 21 and a second skeleton 22, and the first skeleton 21 and the second skeleton 22 are disposed side by side along the X-axis direction, the open ends of the U-shaped magnetic cores 11 have a first side wall and a second side wall, the two U-shaped magnetic cores 11 are defined as a first U-shaped magnetic core and a second U-shaped magnetic core, the open ends of the first U-shaped magnetic cores are inserted into the skeleton structure 2 from one side of the skeleton structure 2 along the positive direction of the Y-axis, the first side walls of the first U-shaped magnetic cores are inserted into the first skeleton 21, the second side walls of the first U-shaped magnetic cores are inserted into the second skeleton 22, the open ends of the second U-shaped magnetic cores are inserted into the skeleton structure 2 from the other side of the skeleton structure 2 along the negative direction of the Y-axis, and the first side walls of the second U-shaped magnetic cores are inserted into the first skeleton 21 to be connected with the first side walls of the first U-shaped magnetic cores, and the second side walls of the second U-shaped magnetic cores are inserted into the second skeleton 22 to be connected with the second side walls of the first U-shaped magnetic cores.

Referring to fig. 1, in some embodiments, the magnetic element structure further includes a base 6, the skeleton structure 2 is mounted on the base 6, the DCDC secondary winding 5 is covered on the skeleton structure 2 and covers the primary coil 3 and the OBC secondary coil 4, and the DCDC secondary winding is connected with the base 6.

Specifically, the magnetic element structure can also include base 6, skeleton texture 2 can install on base 6, and skeleton texture 2 can be located to DCDC secondary winding 5 cover still in primary coil 3 and OBC secondary coil 4, and DCDC secondary winding 5 is close to the one side of base 6 and is equipped with the trip structure, is equipped with the draw-in groove structure corresponding with the trip structure on the base 6, and the trip structure can be inserted in the draw-in groove structure to make DCDC secondary winding 5 be connected with base 6, base 6 can install on the frame, can make skeleton texture 2 install more firmly.

Referring to fig. 1 and 2, in some embodiments, the wire end of the primary coil 3, the wire end of the OBC secondary coil 4, and the wire end of the DCDC secondary winding 5 are all inserted on the base 6.

When the primary coil 3 is wound on the framework, the wire end of the primary coil 3 can extend towards the direction close to the base 6, when the OBC secondary coil 4 is wound on the framework, the wire end of the OBC secondary coil 4 can also extend towards the direction close to the base 6, when the DCDC secondary winding 5 is mounted on the framework, the wire end of the DCDC secondary winding 5 can also extend towards the direction close to the base 6, a plurality of mounting holes can be formed in the base 6, the wire ends can be in one-to-one correspondence with the plurality of mounting holes, the wire ends can be inserted into the corresponding mounting holes, so that the wire end of the primary coil 3, the wire end of the OBC secondary coil 4 and the wire end of the DCDC secondary winding 5 can be arranged on the base 6 in a regular manner, and internal circuits can be conveniently accommodated.

Referring to fig. 1, in some embodiments, the magnetic element structure further includes a resonant inductance module 7, the resonant inductance module 7 is mounted on the base 6, and the resonant inductance module 7 is disposed opposite to the transformer core 1.

Specifically, the magnetic element structure may further include a resonant inductor module 7, where the resonant inductor module 7 may be mounted on the base 6, and the resonant inductor module 7 may be disposed opposite to the transformer core 1, so that the resonant inductor module 7 may be integrated with the OBC module and the DCDC module on the base 6, may be conveniently assembled to the vehicle frame, and may further save an assembly space.

Referring to fig. 1 and 2, in some embodiments, the resonant inductor module 7 includes an inductor core 71, an inductor winding 72, and an insulating sheet 73, the inductor core 71 is mounted on the base 6, the inductor winding 72 is wound around the inductor core 71, and the insulating sheet 73 is disposed between the inductor winding 72 and the inductor core 71.

Specifically, the resonant inductor module 7 may include an inductor core 71, an inductor winding 72, and an insulating sheet 73, the inductor core 71 may be mounted on the base 6, the inductor winding 72 may be wound on the inductor core 71, a wire end of the inductor winding 72 may be inserted on the base 6, and the insulating sheet 73 may be disposed between the inductor winding 72 and the inductor core 71.

Referring to fig. 2 and 4, in some embodiments, the inductor core 71 includes two E-shaped cores 711, wherein one of the E-shaped cores 711 is mounted on the base 6, and the open ends of the two E-shaped cores 711 are correspondingly connected to each other and form a center post 712, and the inductor winding 72 is wound around the center post 712.

Specifically, the inductor core 71 may include two E-shaped cores 711, one of the E-shaped cores 711 may be mounted on the base 6, and the open ends of the two E-shaped cores 711 may be connected to each other in correspondence, thereby forming a center post 712. More clearly, the shape of the E-shaped magnetic cores 711 is similar to the structure of letter E, the side wall of one E-shaped magnetic core 711 facing away from the opening can be connected with the base 6, the opening end of the other E-shaped magnetic core 711 can be connected with the opening end of the E-shaped magnetic core 711 fixed on the base 6, and the two E-shaped magnetic cores 711 are symmetrically arranged, so that the columns in the middle of the two E-shaped magnetic cores 711 can be mutually connected to form a central column 712, the inductance winding 72 can be wound on the central column 712, the wire head end of the inductance winding 72 can be inserted on the base 6, and the two E-shaped magnetic cores 711 can be assembled conveniently.

In some embodiments, the inductor core 71 is made of the same material as the transformer core 1.

Specifically, the inductor core 71 may be made of the same material as the transformer core 1, and preferably, the inductor core 71 is made of an E-type ferrite material, which has high magnetic permeability and low loss.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims

1. The utility model provides a magnetic element structure, its characterized in that includes transformer core (1), skeleton texture (2), primary coil (3), OBC secondary (4) and DCDC secondary winding (5), transformer core (1) are inserted and are located in skeleton texture (2), primary coil (3) with OBC secondary (4) twine respectively in skeleton texture (2), just DCDC secondary winding (5) install in skeleton texture (2) and cover in primary coil (3) with OBC secondary (4).

2. The magnetic element structure according to claim 1, wherein the bobbin structure (2) comprises a first bobbin (21) and a second bobbin (22), the first bobbin (21) and the second bobbin (22) are arranged side by side, the primary coil (3) is partly wound around the first bobbin (21), the primary coil (3) is partly wound around the second bobbin (22), and the OBC secondary coil (4) is partly wound around the first bobbin (21), and the OBC secondary coil (4) is partly wound around the second bobbin (22).

3. The magnetic element structure according to claim 1, characterized in that the primary coil (3) and the OBC secondary coil (4) are wound side by side in the skeleton structure (2), and the windings of the primary coil (3) and the windings of the OBC secondary coil (4) are staggered.

4. The magnetic element structure according to claim 1, wherein the transformer core (1) comprises two U-shaped cores (11), the open ends of the two U-shaped cores (11) are respectively inserted into the skeleton structure (2) from opposite sides of the skeleton structure (2), and the open ends of the two U-shaped cores (11) are correspondingly connected.

5. The magnetic element structure according to claim 1, further comprising a base (6), wherein the skeleton structure (2) is mounted to the base (6), the DCDC secondary winding (5) is covered on the skeleton structure (2) and covers the primary coil (3) and the OBC secondary coil (4), and the DCDC secondary winding (5) is connected to the base (6).

6. The magnetic element structure according to claim 5, characterized in that the wire end of the primary coil (3), the wire end of the OBC secondary coil (4) and the wire end of the DCDC secondary winding (5) are all inserted on the base (6).

7. The magnetic element structure according to claim 5, further comprising a resonant inductance module (7), the resonant inductance module (7) being mounted to the base (6), and the resonant inductance module (7) being disposed opposite the transformer core (1).

8. The magnetic element structure according to claim 7, wherein the resonant inductor module (7) includes an inductor core (71), an inductor winding (72), and an insulating sheet (73), the inductor core (71) is mounted to the base (6), the inductor winding (72) is wound around the inductor core (71), and the insulating sheet (73) is disposed between the inductor winding (72) and the inductor core (71).

9. The magnetic element structure of claim 8, wherein the inductor core (71) comprises two E-shaped cores (711), one of the E-shaped cores (711) being mounted to the base (6), and the open ends of the two E-shaped cores (711) being connected to each other in correspondence and forming a central post (712), the inductor winding (72) being wound around the central post (712).

10. The magnetic element structure according to claim 8, characterized in that the inductor core (71) is made of the same material as the transformer core (1).