KR100992953B1 - Fabricating method of connection pin block for intelligent power module - Google Patents

Fabricating method of connection pin block for intelligent power module Download PDF

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Publication number
KR100992953B1
KR100992953B1 KR20030055970A KR20030055970A KR100992953B1 KR 100992953 B1 KR100992953 B1 KR 100992953B1 KR 20030055970 A KR20030055970 A KR 20030055970A KR 20030055970 A KR20030055970 A KR 20030055970A KR 100992953 B1 KR100992953 B1 KR 100992953B1
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KR
South Korea
Prior art keywords
connection pin
connecting pin
assembly
frame
connection
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Application number
KR20030055970A
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Korean (ko)
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KR20050017340A (en
Inventor
김형택
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엘지이노텍 주식회사
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Priority to KR20030055970A priority Critical patent/KR100992953B1/en
Publication of KR20050017340A publication Critical patent/KR20050017340A/en
Application granted granted Critical
Publication of KR100992953B1 publication Critical patent/KR100992953B1/en

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Abstract

Disclosed is a method of manufacturing a connection pin block for an intelligent power module, which is an assembly of a connection pin and a connection pin in which a signal is input and output. The manufacturing method comprises the steps of manufacturing a connecting pin assembly of the reel-shaped brass pin assembly, forming a notch in a predetermined portion of the connecting pin assembly of the connecting pin assembly, plating the connecting pin assembly, the connecting pin assembly Bending a connecting pin of the connecting pin assembly to arrange the mold in the mold, thereby forming a part of the connecting pin formed by injection molding the connecting pin assembly and the frame integrally with the outside of the frame; Cutting the notch portion of the connection pin of the connection pin assembly integrally formed in the frame so that the plating portion is present at one end of the frame to form a connection pin block in which the connection pin and the frame are integrated. In the method of manufacturing the intelligent power module connecting pin block, the plating part is formed at the end of the connecting pin to which the terminal is soldered, so that the connecting pin and the terminal are easily and firmly soldered together.

Description

Manufacturing method of connecting pin block for intelligent power module {FABRICATING METHOD OF CONNECTION PIN BLOCK FOR INTELLIGENT POWER MODULE}

1 is a view showing a manufacturing method of a connection pin block for a conventional intelligent power module.

2 is a perspective view of an intelligent power module according to an embodiment of the present invention.

Figure 3 shows a method of manufacturing a connection pin block for an intelligent power module according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: circuit board 120: heat sink

130: connecting pin block 131: frame

135: connecting pin

The present invention relates to a method of manufacturing a connection pin block for an intelligent power module, which is an assembly of a connection pin and a connection pin in which a signal is input and output.

Intelligent Power Module (hereinafter referred to as "IPM") refers to components including power switching elements such as power transistors and power FETs, protection circuits and driving circuits that protect and drive the switching elements in one package. Say. These intelligent power modules play a key role in power supply and are used in motors, PDPs, and computers.

The IPM has a heat sink, a circuit board in contact with one surface of the heat sink, and a connecting pin block integrally coupled to the circuit board and the heat sink while surrounding the circuit board. The connection pin block has a connection pin for inputting and outputting a signal and a frame into which the connection pin is press-fitted. A manufacturing method of the conventional connection pin block will be described with reference to FIG. 1.

1 is a view showing a manufacturing method of a connection pin block for a conventional intelligent power module.

As shown in step S11, the connecting pin 21 made of brass is made of a connecting pin assembly 20 having a reel shape, and in step S13, the connecting pin assembly 20 is plated. In step S15, only the connecting pin 21 of the connecting pin assembly 20 is bent, and in step S17, the connecting pin assembly 20 is appropriately arranged and placed in a mold and injection molded. Then, the connecting pin assembly 20 and the frame 23 are integrally formed. In operation S19, when a predetermined portion of the connection pin 21 of the connection pin assembly 20 integrally formed in the frame 23 is cut, the connection pin block 30 is manufactured. Thereafter, the connecting pin block 30 is integrally coupled to the circuit board and the heat sink, and the connecting pin 21 and the circuit board are connected by soldering the cut surface of the connecting pin 21 and the terminals of the circuit board.

However, since the connecting pin of the conventional intelligent power module connecting pin block is made of brass, it is difficult to solder with the terminals of the circuit board. As a result, the connecting pin 21 is plated. However, since the plated connecting pin 21 is cut and the surface of the cut connection pin 21 is soldered with the terminal of the circuit board, the surface of the connecting pin 21 soldered with the terminal of the circuit board is plated. Is the face of brass. As a result, a smooth solder fillet is not formed between the surface of the cutting connection pin 21 and the terminal of the circuit board, thereby reducing the reliability of soldering.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to form a plated portion on the surface of the connection pin of brass to be soldered to solder the terminal of the circuit board to the connection pin firmly. The present invention provides a method of manufacturing a connection pin block for an intelligent power module.

Method of manufacturing a connection pin block for an intelligent power module according to the present invention for achieving the above object, the step of manufacturing a connection pin assembly of the reel type brass connecting pin; Forming a notch at a predetermined portion of the connection pin of the connection pin assembly; Plating the connection pin assembly; Bending the connection pins of the connection pin assembly; Arranging the connection pin assembly in a mold and integrally injection molding the connection pin assembly and the frame such that a portion of the connection pin where the notch is formed is positioned outside the frame; Cutting the notch portion of the connection pin of the connection pin assembly integrally formed in the frame such that a plating part is present at one end of the connection pin to form a connection pin block in which the connection pin and the frame are integrated. .

Hereinafter, a method of manufacturing a connection pin block for an intelligent power module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of an intelligent power module according to an embodiment of the present invention.

As shown, the intelligent power module (hereinafter referred to as "IPM") 100 is a circuit in which an electric element 111 and a terminal 113, such as a power switching element, a protection circuit and a driving circuit, are provided on an upper surface thereof. The printed circuit board 110, the heat sink 120 in contact with the other surface of the circuit board 110 to release heat generated in the circuit board 110, the circuit board 110 and the heat sink 120 integrally It has a connection pin block 130 coupled.

The connection pin block 130 has a rectangular frame 131 that surrounds and supports the edge of the circuit board 110 and a connection pin 135 made of brass integrally pressed into the frame 131. One end side of the connecting pin 135 protrudes into the frame 131 to be connected to the terminal 113, and the other end side protrudes to the upper side of the frame 131 to be connected to an external device.

In order to firmly solder the connection pin 135 to the terminal 113, a plating portion 135a is formed at one end of the connection pin 135 according to the present embodiment.

2 and 3 will be described a method of manufacturing a connection pin block for an intelligent power module according to an embodiment of the present invention. 3 is a view showing a method of manufacturing a connection pin block for an intelligent power module according to an embodiment of the present invention.

As shown in step S110, the connecting pin 135 made of brass is made of a connecting pin assembly 150 in the form of a reel, and in step S120, the notch is formed at a predetermined portion of the connecting pin 135. Notch) 136 is formed. A predetermined portion of the connection pin 135 is cut, and the notch 136 is formed at the portion where the connection pin 135 is cut. This will be described later.

In step S130, the connection pin assembly 150 is plated, and in step S140, only the connection pin 135 of the connection pin assembly 150 is bent. In step S150, the connecting pin assembly 150 is appropriately arranged in the mold and injection molded integrally with the frame 131. At this time, the notch 136 portion of the connection pin 135 of the connection pin assembly 150 is exposed to the outside of the frame 131. Then, the connecting pin assembly 150 and the frame 131 are integrally formed. In operation S160, the notch 136 portion of the connection pin 135 of the connection pin assembly 150 formed integrally with the frame 131 is cut to manufacture the connection pin block 130. At this time, the notch 136 of the connection pin 135 is cut so that the plating part 135a is present at one end of the connection pin 135.

Thereafter, the soldering surface side of the connecting pin 135 of the connecting pin block 130 and the terminal 113 are soldered, because the notch 136 is formed on the connecting pin 135 of the connecting pin assembly 150, A portion of the cutting surface of the connecting pin 135 of the block 130 is formed of a plating portion 135a. As a result, a smooth solder fillet is formed between the plated portion 135a of the connection pin 135 and the terminal 113, so that the connection pin 135 and the terminal 113 are easily and firmly soldered.

As described in detail above, in the method for manufacturing the intelligent power module connecting pin block according to the present invention, since the plated portion is formed at the end of the connecting pin to which the terminal is soldered, the connecting pin and the terminal are easily and firmly soldered to each other.                     

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Of course.

Claims (1)

Manufacturing a connecting pin made of brass into a connecting pin assembly having a reel shape; Forming a notch at a predetermined portion of the connection pin of the connection pin assembly; Plating the connection pin assembly; Bending the connection pins of the connection pin assembly; Arranging the connection pin assembly in a mold and integrally injection molding the connection pin assembly and the frame such that a portion of the connection pin where the notch is formed is positioned outside the frame; Cutting the notch portion of the connection pin of the connection pin assembly integrally formed in the frame such that a plating part is present at one end of the connection pin to form a connection pin block in which the connection pin and the frame are integrated. Method of manufacturing a connection pin block of the intelligent power module, characterized in that.
KR20030055970A 2003-08-13 2003-08-13 Fabricating method of connection pin block for intelligent power module KR100992953B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20030055970A KR100992953B1 (en) 2003-08-13 2003-08-13 Fabricating method of connection pin block for intelligent power module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20030055970A KR100992953B1 (en) 2003-08-13 2003-08-13 Fabricating method of connection pin block for intelligent power module

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KR20050017340A KR20050017340A (en) 2005-02-22
KR100992953B1 true KR100992953B1 (en) 2010-11-09

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102514340B1 (en) * 2015-02-16 2023-03-27 주식회사 솔루엠 Housing for power module package and a method thereof
KR102185064B1 (en) * 2015-06-17 2020-12-01 삼성전기주식회사 Power module and manufacturing method thereof
CN113458280B (en) * 2021-06-17 2022-08-23 江苏大学 Device is surely rolled over to axial components and parts pin in batches based on vision

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1116937A (en) 1997-06-24 1999-01-22 Hitachi Ltd Terminal structure of power semiconductor module
JP2005123328A (en) 2003-10-15 2005-05-12 Denso Corp Semiconductor device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1116937A (en) 1997-06-24 1999-01-22 Hitachi Ltd Terminal structure of power semiconductor module
JP2005123328A (en) 2003-10-15 2005-05-12 Denso Corp Semiconductor device

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