CN212648232U

CN212648232U - Terminal and module

Info

Publication number: CN212648232U
Application number: CN202021295359.3U
Authority: CN
Inventors: 王咏; 崔晓
Original assignee: Guangdong Core Juneng Semiconductor Co ltd
Current assignee: Guangdong Core Juneng Semiconductor Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-02
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a terminal and module, include: a main body portion; the top part extends from the main body part and is used for being connected with the first plate body; the welding part, certainly the main part extends, the welding part is used for with the welding of second plate body, the welding part is towards keeping away from the second plate body direction is concave to be equipped with the welding groove. The utility model discloses a set up the top and be used for being connected and fixed with first plate body, through keeping away from the concave welding groove of establishing of second plate body direction at the weld part court, can make at weld part welded in-process, get rid of the bubble in order to prevent that the phenomenon of skew from appearing in the terminal in welding process, guarantee the welding effect, welding process's uniformity and stability have been strengthened, the intensity and the reliability of terminal with second plate body welded have been strengthened, terminal through this scheme can realize stable being connected with first plate body and second plate body, but wide application in electricity connection technical field.

Description

Terminal and module

Technical Field

The utility model belongs to the technical field of the electric connection technique and specifically relates to a terminal and module.

Background

An IGBT module is generally provided in an existing inverter product, and is a modular semiconductor product formed by bridging and packaging an IGBT (insulated gate bipolar transistor chip) and an FWD (freewheeling diode chip) through a specific circuit; the packaged IGBT module is directly applied to equipment such as a frequency converter, a UPS (uninterrupted power supply) and the like. The current IGBT module need set up PIN needle and ceramic copper-clad plate (DBC) and weld, however current PIN needle, the welding part area is little and for smooth planar structure, when PIN needle and ceramic copper-clad plate weld, produces the bubble easily and leads to PIN needle skew, influences welding effect and welded stability.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a: a terminal and a module ensuring a soldering effect are provided.

The utility model adopts the technical proposal that:

a terminal, comprising:

a main body portion;

the top part extends from the main body part and is used for being connected with the first plate body;

the welding part, certainly the main part extends, the welding part is used for with the welding of second plate body, the welding part is towards keeping away from the second plate body direction is concave to be equipped with the welding groove.

Further, the top portion and the welding portion extend from different sides of the main body portion, respectively.

Further, the top portion includes two first side surfaces for mating with the first plate body.

Further, the length of the first side surface is greater than or equal to the thickness of the first plate body.

Further, the top portion comprises a plurality of second side surfaces, the second side surfaces are far away from the main body portion relative to the first side surfaces, and the second side surfaces are obliquely arranged.

Further, the top portion includes a first groove located between the two first side surfaces.

Further, the top portion further comprises a second groove, the second groove is located between the two first side faces, the second groove is sunken towards the first groove, and the first groove is sunken towards the second groove.

Further, the welding part comprises a bottom surface, the welding groove is concavely arranged from the bottom surface, and the area of the bottom surface is larger than that of the cross section of the main body part and/or the top part.

Further, the welding groove is a straight groove and/or a trapezoidal groove.

The utility model also provides a module, include the terminal first plate body with the second plate body.

The utility model has the advantages that: be used for being connected and fixed with first plate body through setting up the top, through establishing the welding groove towards keeping away from the second plate body direction at the weld part concavely, can make at weld part welded in-process, get rid of the bubble in order to prevent that the phenomenon of skew from appearing in the terminal in welding process, guarantee the welding effect, strengthened welding process's uniformity and stability, strengthened terminal and second plate body welded intensity and reliability, can realize stable being connected with first plate body and second plate body through the terminal of this scheme.

Drawings

Fig. 1 is a perspective view of the terminal of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a schematic diagram of the terminal of the embodiment being mated with a first board and a second board;

fig. 4 is a schematic diagram of the prior art terminal and the first board.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," and the like in the description and claims of this application and in the drawings are used solely to distinguish one from another and are not used to describe a particular sequence. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The invention will be further explained and explained with reference to the drawings and the embodiments in the following description.

Referring to fig. 1 and 2, an embodiment of the present invention provides a terminal including a main body portion 1, a top portion 2, and a welding portion 3.

Referring to fig. 1 and 2, in the present embodiment, the top portion 2 is connected to the main body portion 1 and extends from the upper side of the main body portion 1, and the top portion 2 includes two first side surfaces 21, several (including but not limited to two) second side surfaces 22, a first groove 23 and a second groove 24.

Referring to fig. 1, 2 and 3, in the present embodiment, the top portion 2 is adapted to be connected to the first plate body 100, optionally inserted into a through hole of the first plate body 100. The first side surface 21 protrudes in the left-right direction with respect to the main body 1, and is used for interference fit with the first plate 100; alternatively, the length of the first side surface 21 is set to be greater than the thickness of the first board body 100, thereby ensuring a stable fit between the terminal and the first board body 100.

In the present embodiment, the second side 22 is disposed above the first side 21, optionally in an inclined manner, and plays a role of guiding, thereby ensuring that the top 2 can be inserted smoothly when inserted into the first board 100.

Referring to fig. 1, 2 and 3, in the present embodiment, the first groove 23 and the second groove 24 are disposed between the two first side surfaces 21, the second groove 24 is recessed toward the first groove 23, the first groove 23 is recessed toward the second groove 24, and by providing the first groove 23 or the second groove 24, the rigidity of the top portion 2 can be reduced, so that an interference fit with the first plate body 100 is easily formed. And set up first recess 23 and second recess 24, be different from the single logical groove that directly link up the perforation, can improve the rigidity of first side 21, strengthen from this and first plate body 100 interference fit's joint strength, reduce the condition of the rigidity of top 2 to a certain extent promptly, can guarantee again that rigidity can not excessively reduce to really guarantee the stable cooperation of top 2 and first plate body 100.

Referring to fig. 4, the position where the conventional terminal is matched with the first board 100 is an oval structure, the length of the oval structure matched with the first board 100 is limited, and meanwhile, due to the limitation of the process, when a plurality of terminals are required to be matched with the first board 100, the heights of the terminals are different, so that the matched position of the terminal with the first board 100 is difficult to determine, and generally not on the same plane, and finally, the difficulty of the crimping process of the terminal and the first board 100 is increased, or even the reliable connection with the first board 100 cannot be satisfied. By the structure of the top 2 of the present embodiment, the first side surface 21 is disposed, so as to reduce the process requirement, and the area of the first side surface 21 can be increased to ensure the reliable matching between the terminal and the first board 100.

Referring to fig. 1, 2 and 3, in the present embodiment, the welding portion 3 is connected to the main body portion 1 and extends from the lower side of the main body portion 1. The welded portion 3 gradually increases in the extending direction, and the welded portion 3 has a bottom surface 31, and the bottom surface 31 is used for welding with the second plate body 200. In the present embodiment, the area of the bottom surface 31 is larger than the area of the cross section of the main body portion 1 and/or the top portion 2, alternatively, the area of the cross section of the main body portion 1 may be the largest cross section area available at a certain position of the main body portion 1, and the area of the cross section of the top portion 2 may be the largest cross section area available at a certain position of the top portion 2. The bottom surface 31 is provided with a soldering groove 32 recessed in a direction away from the second plate 200, i.e., in a direction toward the main body 1.

In the present embodiment, the welding grooves 32 are arranged in a cross shape, and other embodiments may be arranged in other forms; the weld groove 32 may be a straight groove or a trapezoidal groove, or a combination of both straight and trapezoidal grooves. Alternatively, the straight groove and the trapezoidal groove are recessed from the welding groove 32, and the straight groove includes, but is not limited to, the inner surface surrounding the welding groove 32 is at a right angle.

The bottom surface 31 with the increased area is arranged by the scheme, so that the welding strength and reliability of the terminal and the second plate body 200 are enhanced; the welding groove 32 is concavely arranged on the bottom surface 31, so that air bubbles can be removed in the welding process of the welding part 3 to prevent the terminal from deviating in the welding process, the consistency and stability of the welding process are further enhanced, and the welding strength and reliability of the terminal and the second plate body 200 are enhanced.

Referring to fig. 3, the present solution further provides a module, optionally an insulated gate bipolar transistor module (IGBT module), including the terminal, the first board 100, and the second board 200.

Optionally, the first board body 100 is a control board, and the second board body 200 is a ceramic copper clad laminate (DBC).

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. A terminal, comprising:

a main body portion;

2. A terminal according to claim 1, wherein: the top portion and the welding portion respectively extend from different sides of the main body portion.

3. A terminal according to claim 1, wherein: the top portion includes two first side surfaces for mating with the first plate body.

4. A terminal according to claim 3, wherein: the length of the first side surface is greater than or equal to the thickness of the first plate body.

5. A terminal according to claim 3, wherein: the top comprises a plurality of second side surfaces, the second side surfaces are far away from the main body part relative to the first side surfaces, and the second side surfaces are obliquely arranged.

6. A terminal according to claim 3, wherein: the top portion includes a first groove located between the two first side surfaces.

7. The terminal of claim 6, wherein: the top further comprises a second groove, the second groove is located between the two first side faces, the second groove is sunken towards the first groove, and the first groove is sunken towards the second groove.

8. A terminal according to claim 1, wherein: the welding part comprises a bottom surface, the welding groove is concavely arranged from the bottom surface, and the area of the bottom surface is larger than that of the cross section of the main body part and/or the top part.

9. A terminal according to claim 1, wherein: the welding groove is a straight groove and/or a trapezoidal groove.

10. A module comprising the terminal of any one of claims 1-9, the first board body, and the second board body.