CN212750576U

CN212750576U - Power electronic inductance structure

Info

Publication number: CN212750576U
Application number: CN202021615583.6U
Authority: CN
Inventors: 柴清武; 杨锡旺; 付瑜
Original assignee: Jiangsu Soarwhale Green Technology Co ltd; Changzhou Soarwhale Electronic Technology Co ltd
Current assignee: Changzhou Shiwei Electronics Co ltd; Jiangsu Youjia Shentian New Energy Technology Co., Ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-03-19
Anticipated expiration: 2030-08-05

Abstract

The utility model discloses a power electronic inductance structure, which comprises a framework, two winding coils and a magnetic core, wherein the framework is provided with two winding posts and a middle magnetic core cavity arranged between the two winding posts; the winding coils are wound on the corresponding winding posts; the magnetic core comprises two winding magnetic cores extending into the winding post and a middle magnetic core extending into the middle magnetic core cavity. The novel development platform is simple in structure and flexible to use, so that the development period is effectively shortened, and the design cost is reduced.

Description

Power electronic inductance structure

Technical Field

The utility model relates to a power electronic inductance structure.

Background

At present, in the fields of new energy automobiles, rail transit, industrial control and the like, such as vehicle-mounted charger, direct current exchanger, motor controller, two-in-one system integration, three-in-one system integration and the like, along with the continuous increase of power, the requirement on magnetic core components (mainly inductors and transformers) is higher and higher, and the problem that how to meet the design requirement of realizing high voltage and large current is solved, and meanwhile, the magnetic element with small size and stable size is ensured, so that the problem that the magnetic element needs to be solved in circuit design is solved.

The existing power electronic product inductors are wound by adopting film-covered wires, parts such as winding shafts, supports, conducting shafts and the like need to be developed, the assembling process is complex, the size stability is poor, the size is increased, the weight is increased, the process is complex, and the cost is high for meeting the requirements of customers for different batches of products.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect, provide a power electronic inductance structure, its simple structure uses in a flexible way to effectively shortened development cycle, reduced design cost.

In order to solve the technical problem, the technical scheme of the utility model is that: a power electronic inductor structure comprising:

the magnetic core comprises a framework, a magnetic core body and a magnetic core body, wherein the framework is provided with two winding posts and a middle magnetic core cavity arranged between the two winding posts;

the two winding coils are wound on the corresponding winding posts;

and the magnetic core comprises two winding magnetic cores extending into the winding posts and a middle magnetic core extending into the middle magnetic core cavity.

Further, the magnetic core comprises two sub-magnetic cores;

the sub magnetic cores comprise side magnetic bodies positioned on the framework, and sub-middle magnetic cores and two sub-winding magnetic cores which are arranged on the side magnetic bodies; wherein the content of the first and second substances,

the two sub-magnetic cores are suitable for being inserted into the framework from opposite directions, so that the two opposite sub-winding magnetic cores extend into the corresponding winding posts and then are in butt joint to form a winding magnetic core, and the two opposite middle magnetic cores extend into the corresponding middle magnetic core cavities and then are in butt joint to form a middle magnetic core.

Furthermore, a positioning mechanism for positioning the corresponding side magnet is arranged on the framework.

Further, the positioning mechanism includes:

a locating block matching and adapted to abut against a corresponding sidewall profile of the side magnet.

Further, the side wall profile of the side magnet comprises four faces, the number of the positioning blocks is three, and the three positioning blocks respectively abut against any three of the four faces.

Further, the skeleton comprises two sub-skeletons spliced together.

Further, in order to facilitate connection of the winding coil with an external circuit, a connection terminal is connected to the winding coil.

After the technical scheme is adopted, the utility model discloses following beneficial effect has:

1. small volume, stable size and high size precision.

The utility model discloses a winding coil adopts the coiling mould to carry out the coiling, compares in traditional coil production mode, and the size is more stable, and coiling copper line sectional area be square, can select according to concrete application demand, and the coiling is small, and electric current overload capacity is strong, is particularly useful for the new energy automobile that the power requirement is high, fields such as track traffic.

2. The structure is simple, the assembly process is simple, and DOE verification of research and development engineers is facilitated.

All parts are produced by adopting a die, and the symmetrical design is adopted, so that only a simple test tool is needed, no extra professional tool is needed, the testing tool is particularly suitable for the initial stage of product research and development, research and development engineers adjust the air gap according to actual requirements of requirements to carry out DOE verification, and the development period of new products is shortened.

3. The design has good compatibility and flexible application.

3.1 only need reserve the paster nut in PCB assigned position, the cooperation binding post can conveniently realize circuit connection, is particularly useful for the product development initial stage, and the frequent condition that needs frequently change PCB is optimized in the circuit debugging, practices thrift the magnetic element cost.

3.2 according to actual demand, can change binding post for customization copper bar or membrane envelope curve, adopt ultrasonic welding technology with it and winding coil welding, satisfy the connection demand of different circuit topologies of different products.

Drawings

Fig. 1 is a perspective view of a power electronic inductor structure according to the present invention;

fig. 2 is an assembly exploded view of the power electronic inductor structure of the present invention;

fig. 3 is a perspective view of the sub-frame of the present invention;

fig. 4 is a perspective view of the sub-magnetic core of the present invention.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1 to 4, a power electronic inductor structure includes:

the magnetic core comprises a framework, wherein two winding posts 22 and a middle magnetic core cavity 23 arranged between the two winding posts 22 are arranged on the framework;

two winding coils 3, wherein the winding coils 3 are wound on the corresponding winding posts 22;

magnetic cores comprising two winding cores extending into the winding leg 22 and a middle core extending into the middle core cavity 23.

Specifically, in the present embodiment, the magnetic core includes two sub-magnetic cores 1;

the sub-magnetic core 1 comprises a side magnetic body 11 positioned on the framework, and a sub-middle magnetic core 12 and two sub-winding magnetic cores 13 which are arranged on the side magnetic body 11; wherein the content of the first and second substances,

the two sub-magnetic cores 1 are suitable for being inserted into the framework from opposite directions, so that the two opposite sub-winding magnetic cores 13 extend into the corresponding winding posts and then are in butt joint to form a winding magnetic core, and the two opposite middle magnetic cores 12 extend into the corresponding middle magnetic core cavities and then are in butt joint to form a middle magnetic core.

In the embodiment, the sub-magnetic core 1 can be produced by adopting a cavity pressing die, and has the advantages of mature production process, suitability for mass production, high production efficiency and low cost; in addition, the winding coil 3 is a winding part, adopts a winding die, is convenient for mass production, and has the advantages of high production efficiency, stable size, high yield, low cost and the like; moreover, the skeleton is the injection molding, adopts injection mold production, has that production technology is ripe, is fit for mass production, and production efficiency is high, and the precision is high, and is with low costs, the subsequent processing of being convenient for advantage such as.

Specifically, as shown in fig. 2, the frame is provided with a positioning mechanism for positioning the corresponding side magnet 11.

The specific structure of the positioning mechanism can be as follows:

a positioning block 21 matching and adapted to abut against a corresponding side wall profile of said side magnet 11.

Specifically, the side wall profile of the side magnet 11 includes four faces, wherein two sets of opposite faces are provided, one set of opposite faces is a straight face, the other opposite face is an arc-shaped face, three positioning blocks 21 are provided, and three positioning blocks 21 respectively abut against any three of the four faces; two positioning blocks 21 are correspondingly arranged on the two arc surfaces, and one positioning block 21 is correspondingly arranged on one flat surface, so that the purpose of positioning the side magnet 11 is achieved.

The skeleton comprises two sub-skeletons 2 spliced together.

Specifically, as shown in fig. 1, a connection terminal 4 is connected to the winding coil 3.

In this embodiment, the connecting terminal 4 is welded to the winding coil 3, the two side sub-frames 2 are inserted, the same action is repeated to complete the assembly of the winding coil module on the other side, the middle column of the sub-magnetic core 1 is coated with the fixing glue, the winding coil module is loaded, the sub-magnetic core 1 on the other side is loaded, and the assembly of the inductance assembly is completed.

In the practical application process, adjusting an air gap according to the practical circuit topology requirement to carry out DOE verification; the development period is shortened, and meanwhile, the novel power electronic inductor shown in figure 1 is simple in structure and flexible to use, so that the development period is effectively shortened, and the design cost is reduced.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. A power electronic inductor structure, comprising:

the magnetic core comprises a framework, wherein two winding posts (22) and a middle magnetic core cavity (23) arranged between the two winding posts (22) are arranged on the framework;

the two winding coils (3), the winding coils (3) are wound on the corresponding winding posts (22);

and the magnetic cores comprise two winding magnetic cores extending into the winding post (22) and a middle magnetic core extending into the middle magnetic core cavity (23).

2. A power electronic inductance structure according to claim 1,

the magnetic core comprises two sub magnetic cores (1);

the sub-magnetic core (1) comprises a side magnetic body (11) positioned on the framework, a sub-middle magnetic core (12) arranged on the side magnetic body (11) and two sub-winding magnetic cores (13); wherein the content of the first and second substances,

the two sub-magnetic cores (1) are suitable for being inserted into the framework from opposite directions, so that the two opposite sub-winding magnetic cores (13) extend into the corresponding winding posts and then are in butt joint to form a winding magnetic core, and the two opposite middle magnetic cores (12) extend into the corresponding middle magnetic core cavities and then are in butt joint to form a middle magnetic core.

3. A power electronic inductance structure according to claim 2,

and the framework is provided with a positioning mechanism for positioning the corresponding side magnet (11).

4. A power electronic inductance structure according to claim 3,

the positioning mechanism includes:

a positioning block (21) matching and adapted to abut against a corresponding side wall profile of the side magnet (11).

5. A power electronic inductance structure according to claim 4,

the side wall profile of the side magnet (11) comprises four faces, the number of the positioning blocks (21) is three, and the three positioning blocks (21) respectively abut against any three of the four faces.

6. A power electronic inductance structure according to claim 1,

the framework comprises two sub-frameworks (2) spliced together.

7. A power electronic inductance structure according to claim 1,

and the winding coil (3) is connected with a wiring terminal (4).