CN216450835U

CN216450835U - Terminal connection structure

Info

Publication number: CN216450835U
Application number: CN202123018749.3U
Authority: CN
Inventors: 王咏; 闫鹏修; 朱贤龙; 周晓阳; 刘军
Original assignee: Guangdong Core Juneng Semiconductor Co ltd
Current assignee: Guangdong Core Juneng Semiconductor Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-06
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to a terminal connecting structure, which comprises an insulating part, a first terminal and a second terminal, wherein a communicating hole is formed in the insulating part; the first terminal is arranged on one side surface of the insulating piece, a first connecting hole is formed in the first terminal, and the first connecting hole is communicated with the communicating hole; the second terminal is arranged on the other side face, back to the first terminal, of the insulating piece, a second connecting hole is formed in the second terminal, the second connecting hole can be communicated with the first connecting hole through the communicating hole, and the first terminal and the second terminal are both used for connecting a busbar. The first terminal and the second terminal are respectively arranged on the two opposite side faces of the insulating piece, the first terminal and the second terminal are completely overlapped, the overlapping area between the first terminal and the second terminal is increased, and meanwhile, the stray inductance between the first terminal and the second terminal can be guaranteed to be reduced by the insulating piece between the first terminal and the second terminal.

Description

Terminal connection structure

Technical Field

The present invention relates to the field of electronic components, and more particularly, to a terminal connection structure.

Background

When the power module is normally used, the on-off speed of the device is very high. In the turn-off process, the on-state current of the switching device is rapidly reduced, and a larger current change rate is generated; meanwhile, because a conductive path in an IGBT (insulated gate bipolar transistor) module has stray inductance, the voltage spike is generated under the combined action of the stray inductance and the current change rate, the switching loss of a device is increased, the switching speed is influenced, and even the breakdown phenomenon of the device due to overhigh voltage can be caused, so that the whole circuit structure has certain potential safety hazards.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a terminal connection structure having higher safety performance in view of the above problems.

A terminal connecting structure comprises an insulating part, a first terminal and a second terminal, wherein a communication hole is formed in the insulating part; the first terminal is arranged on one side surface of the insulating piece, a first connecting hole is formed in the first terminal, and the first connecting hole is communicated with the communicating hole; the second terminal sets up the insulating part dorsad on the another side of first terminal, the second connecting hole has been seted up on the second terminal, the second connecting hole can pass through the intercommunicating pore with first connecting hole is linked together, first terminal with the second terminal all is used for connecting female arranging.

In one embodiment, the communication hole has a diameter smaller than that of the first connection hole.

In one embodiment, the diameter of the communication hole is smaller than the diameter of the second connection hole.

In one embodiment, the insulating member includes a first insulating portion and a second insulating portion, one side of the first insulating portion is connected to one side of the second insulating portion, the first insulating portion and the second insulating portion are disposed at a non-straight angle or a non-zero angle, a side surface of the first terminal abuts against a side surface of the first insulating portion and the second insulating portion, and a side surface of the second terminal abuts against a side surface of the first insulating portion and the second insulating portion facing away from the first terminal.

In one embodiment, the first insulating portion and the second insulating portion are connected in an "L" shape.

In one embodiment, an area of a side surface of the insulating member contacting the first terminal is larger than an area of a side surface of the insulating member contacting the first terminal.

In one embodiment, an area of a side surface of the insulating member contacting the second terminal is larger than an area of a side surface of the insulating member contacting the second terminal.

In one embodiment, a length of the first insulating portion in the longitudinal direction is greater than lengths of the first terminal and the second terminal in the longitudinal direction.

In one embodiment, a length of the first insulating portion in the lateral direction is greater than lengths of the first terminal and the second terminal in the lateral direction.

In one embodiment, the length of the second insulating portion in the lateral direction is greater than the lengths of the first terminal and the second terminal in the lateral direction.

In one embodiment, a side surface of the insulating member is a buffer surface, the buffer surface is provided with a buffer slot, and the buffer surface can intersect with a plane where the first terminal abuts against the side surface of the insulating member and can intersect with a plane where the second terminal abuts against the side surface of the insulating member.

In one embodiment, one side surface of the first insulating portion is the buffer surface, and the buffer surface is provided with a buffer groove.

In one embodiment, one side surface of the first insulating portion is the buffering surface, the insulating member further includes at least two extending portions, at least two extending portions are disposed on the buffering surface, two adjacent extending portions are disposed at intervals, and an interval between two adjacent extending portions is a buffering groove.

In one embodiment, the terminal connection structure further includes a connector, the connector can be sequentially inserted into the first connection hole, the communication hole, and the second connection hole, and the connector is used for connecting the busbar.

In one embodiment, the connector is a bolt; the length of the bolt is greater than or equal to the sum of the hole depths of the first connecting hole, the communicating hole and the second connecting hole.

According to the terminal connection structure, the first terminal and the second terminal are respectively arranged on the two opposite side faces of the insulating piece, the first terminal and the second terminal are completely overlapped, the lamination area between the first terminal and the second terminal is increased, and meanwhile, the stray inductance between the first terminal and the second terminal can be guaranteed to be reduced due to the fact that the insulating piece is arranged between the first terminal and the second terminal. And first connecting hole and second connecting hole are linked together through the intercommunicating pore, are convenient for be connected terminal connection structure with outside female arranging, guarantee terminal connection structure's practicality and convenience.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a terminal connection structure in an embodiment;

fig. 2 is a front view of the terminal connection structure in the embodiment of fig. 1;

fig. 3 is a side view of the terminal connection structure in the embodiment of fig. 1;

fig. 4 is a schematic structural diagram of a terminal connection structure in an embodiment;

fig. 5 is a schematic structural view of a terminal connection structure in another embodiment.

The elements in the figure are labeled as follows:

10. a terminal connection structure; 100. an insulating member; 110. a communicating hole; 120. a first insulating portion; 121. a buffer tank; 122. an extension portion; 130. a second insulating section; 200. a first terminal; 210. a first connection hole; 300. a second terminal.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 and 2, a terminal connection structure 10 in one embodiment includes an insulating member 100, a first terminal 200, and a second terminal 300. The insulating member 100 has a communication hole 110 formed therein. The first terminal 200 is disposed on one side of the insulating member 100, and the first terminal 200 has a first connecting hole 210. The first connection hole 210 communicates with the communication hole 110. The second terminal 300 is disposed on the other side of the insulating member 100 facing away from the first terminal 200, and a second connection hole is opened in the second terminal 300. The second connection hole can communicate with the first connection hole 210 through the communication hole 110. The first terminal 200 and the second terminal 300 are used to connect a bus bar.

The first terminal 200 and the second terminal 300 are respectively arranged on two opposite sides of the insulating member 100, the first terminal 200 and the second terminal 300 are completely overlapped, the lamination area between the first terminal 200 and the second terminal 300 is increased, and meanwhile, the stray inductance between the first terminal 200 and the second terminal 300 can be reduced by the insulating member 100 between the first terminal 200 and the second terminal 300. And first connecting hole 210 and second connecting hole are linked together through intercommunicating pore 110, are convenient for be connected terminal connection structure 10 with the female arranging of outside, guarantee terminal connection structure 10's practicality and convenience.

The insulating member 100 includes, but is not limited to, a plastic member, and may also be a plate made of other insulating materials. As long as the insulating member 100 can achieve insulation, the creepage distance between the first terminal 200 and the second terminal 300 may be increased.

As shown in fig. 1, the number of the first connection holes 210 is two in the present embodiment. The number of the second connection holes is identical to the number of the first connection holes 210. The number of the communication holes 110 is identical to the number of the first connection holes 210. The two first connection holes 210 are spaced apart. The first connection hole 210 can be modified according to actual requirements. The number of the communication holes 110 and the number of the second connection holes are changed corresponding to the number of the first connection holes 210.

In one embodiment, the diameter of the communication hole 110 is smaller than the diameter of the first connection hole 210. In one embodiment, the diameter of the communication hole 110 is smaller than that of the second connection hole. The diameter of the communication hole 110 is smaller than the first connection hole 210 and the second connection hole so that the first connection hole 210 and the second connection hole cannot directly communicate, and the inner wall of the first connection hole 210 and the inner wall of the second connection hole do not have continuity, and a creepage distance between the first terminal 200 and the second terminal 300 can be increased. The stability and safety of the terminal connection structure 10 are ensured.

Referring to fig. 2 and 3, in one embodiment, the insulating member 100 includes a first insulating portion 120 and a second insulating portion 130. One side of the first insulating portion 120 is connected to one side of the second insulating portion 130, and the first insulating portion 120 and the second insulating portion 130 are disposed at a non-straight angle or a non-zero angle. One side surface of the first terminal 200 abuts against one side surfaces of the first insulating portion 120 and the second insulating portion 130. One side surface of the second terminal 300 abuts against one side surface of the first insulating portion 120 and the second insulating portion 130 facing away from the first terminal 200. Specifically, the first insulating portion 120 and the second insulating portion 130 are connected in an "L" shape. The connection shape of the first insulating portion 120 and the second insulating portion 130 can be adjusted according to actual needs, including but not limited to "L" type connection, and "J" type connection.

Referring to fig. 1 to 3, in one embodiment, the area of the side of the insulating member 100 contacting the first terminal 200 is larger than the area of the side of the insulating member 100 contacting the first terminal 200. In one embodiment, the area of the side of the insulating member 100 contacting the second terminal 300 is greater than the area of the side of the second terminal 300 contacting the insulating member 100. The insulating member 100 has a side surface area larger than that of the first terminal 200 and that of the second terminal 300, and can secure a creepage distance between the first terminal 200 and the second terminal 300. The stability and safety of the terminal connection structure 10 are ensured.

Specifically, as shown in fig. 2 and 3, the length of the first insulating portion 120 in the longitudinal direction B is greater than the lengths of the first and

second terminals

200 and 300 in the longitudinal direction B. The length of the first insulating portion 120 in the lateral direction a is greater than the lengths of the first and

second terminals

200 and 300 in the lateral direction a. Meanwhile, the length of the second insulating part 130 in the lateral direction a is greater than the lengths of the first and

second terminals

200 and 300 in the lateral direction a. The edges of the first insulating portion 120 and the second insulating portion 130 are made larger than the edges of the first terminal 200 and the second terminal 300, and a creepage distance between the first terminal 200 and the second terminal 300 is ensured. The stability and safety of the terminal connection structure 10 are ensured.

Referring to fig. 4 and 5, in one embodiment, a side of the insulator 100 is a buffer surface. The buffer surface is provided with a buffer groove 121. The buffer surface can intersect with a plane where a side of the first terminal 200 abuts against the insulator 100, and can intersect with a plane where a side of the second terminal 300 abuts against the insulator 100. The buffer groove 121 is formed on one side surface of the insulating member 100, so that the creepage distance between the first terminal 200 and the second terminal 300 can be further increased. The insulating performance of the insulating member 100 is ensured.

In one embodiment, as shown in fig. 5, one side surface of the first insulating portion 120 is a buffer surface, and the buffer surface is provided with a buffer slot 121. In another embodiment, as shown in fig. 4, a side of the first insulating portion 120 is a buffer surface. The insulator 100 also includes an extension 122. The number of the extending portions 122 is at least two, at least two extending portions 122 are arranged on the buffering surface, two adjacent extending portions 122 are arranged at intervals, and the interval between two adjacent extending portions 122 is the buffering groove 121. The buffer groove 121 may be formed by inwardly slotting the buffer surface, or by outwardly arranging the extending portions 122, and the buffer groove 121 is formed by the interval between the extending portions 122. As long as the creepage distance between the first terminal 200 and the second terminal 300 can be extended.

In one embodiment, the terminal connection structure 10 further includes a connection member. The connection member can be sequentially inserted through the first connection hole 210, the communication hole 110, and the second connection hole. The connecting piece is used for connecting the busbar. In particular, the connecting piece is a bolt. The length of the bolt is greater than or equal to the sum of the hole depths of the first connection hole 210, the communication hole 110, and the second connection hole. The connector also has insulating properties. The terminal connection structure 10 is ensured to be stably connected to the busbar.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may directly conflict with the first and second features, or the first and second features may indirectly conflict with each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A terminal connection structure, characterized by comprising:

the insulating part is provided with a communication hole;

the first terminal is arranged on one side face of the insulating piece, a first connecting hole is formed in the first terminal, and the first connecting hole is communicated with the communicating hole; and

the second terminal, the second terminal sets up the insulating part dorsad on the another side of first terminal, the second connecting hole has been seted up on the second terminal, the second connecting hole can pass through the intercommunicating pore with first connecting hole is linked together, first terminal with the second terminal all is used for connecting female arranging.

2. The terminal connecting structure according to claim 1, wherein a diameter of the communication hole is smaller than a diameter of the first connection hole; and/or

The diameter of the communication hole is smaller than that of the second connection hole.

3. The terminal connection structure according to claim 1, wherein the insulating member includes a first insulating portion and a second insulating portion, one side of the first insulating portion and one side of the second insulating portion are connected, the first insulating portion and the second insulating portion are disposed at a non-flat angle or a non-zero angle, one side surface of the first terminal abuts against one side surface of the first insulating portion and one side surface of the second insulating portion, and one side surface of the second terminal abuts against one side surface of the first insulating portion and the second insulating portion facing away from the first terminal.

4. The terminal connection structure according to claim 3, wherein the first insulating portion and the second insulating portion are connected in an "L" shape.

5. The terminal connecting structure according to claim 3, wherein an area of a side surface of the insulating member contacting the first terminal is larger than an area of a side surface of the first terminal contacting the insulating member; and/or

The area of the side surface of the insulating member in contact with the second terminal is larger than the area of the side surface of the insulating member in contact with the second terminal.

6. The terminal-connecting structure according to claim 5, wherein a length of the first insulating portion in a longitudinal direction is larger than lengths of the first terminal and the second terminal in the longitudinal direction; and/or

A length of the first insulating portion in the lateral direction is larger than lengths of the first terminal and the second terminal in the lateral direction; and/or

The length of the second insulating portion in the lateral direction is larger than the lengths of the first terminal and the second terminal in the lateral direction.

7. A terminal connecting structure according to claim 3, wherein a side surface of the insulating member is a buffer surface, the buffer surface is provided with a buffer groove, and the buffer surface can intersect with a plane where the first terminal abuts against the side surface of the insulating member and can intersect with a plane where the second terminal abuts against the side surface of the insulating member.

8. The terminal connecting structure according to claim 7, wherein one side surface of the first insulating portion is the buffer surface, and the buffer surface is provided with a buffer groove; or

One side on the first insulating part is the buffering face, the insulating part still includes the extension, the quantity of extension is at least two, at least two the extension all sets up on the buffering face, adjacent two the extension interval sets up, adjacent two interval between the extension is the dashpot.

9. A terminal connection structure according to any one of claims 1 to 8, further comprising a connecting member capable of being inserted through the first connection hole, the communication hole, and the second connection hole in this order, the connecting member being used to connect the busbar.

10. The terminal connecting structure according to claim 9, wherein the connecting member is a bolt; the length of the bolt is greater than or equal to the sum of the hole depths of the first connecting hole, the communicating hole and the second connecting hole.