CN214378422U

CN214378422U - Two-piece type high-power copper bar rectifier bridge frame and packaging structure thereof

Info

Publication number: CN214378422U
Application number: CN202120626216.4U
Authority: CN
Inventors: 杨生
Original assignee: Yangzhou Junpin Electronic Technology Co ltd
Current assignee: Yangzhou Junpin Electronic Technology Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-10-08
Anticipated expiration: 2031-03-26

Abstract

The scheme relates to a two-piece type high-power copper bar rectifier bridge frame and a packaging structure thereof, and the two-piece type high-power copper bar rectifier bridge frame comprises an upper frame and a lower frame, wherein the upper frame and the lower frame respectively comprise two parallel frames, a plurality of frame supporting rods fixedly connected between the frames, and a plurality of patches distributed on one side of the frame supporting rods; the upper frame and the lower frame are combined to form a rectangular wide frame with an upper layer and a lower layer, and the upper frame patch and the lower frame patch are buckled to form a rectifier bridge structural unit. The two-piece copper bar frame provided by the utility model can load large-size semiconductor chips, and meet the requirement of high power; the rectifier bridge structure unit with the chip soldered is coated in the packaging body, and the four pins extend out of the packaging body and are bent to form patches parallel to the bottom surface of the packaging body, so that subsequent installation is facilitated. The utility model provides a rectifier bridge constitutional unit can bear more high-power, also can satisfy the development trend requirement of relevant product ultra-thin, super miniaturization simultaneously, further lowers the mounting height of product.

Description

Two-piece type high-power copper bar rectifier bridge frame and packaging structure thereof

Technical Field

The utility model relates to a rectifier bridge circuit board processing technology field specifically is a high-power copper bar rectifier bridge frame of two formula and packaging structure thereof.

Background

The diode is one of the most commonly used electronic components, and the rectifier bridge is an integrated circuit formed by four diodes enclosed in a casing, and is widely used as a power component in various power supply devices. But since the rectifier bridge is a small scale integrated circuit, typically small in size, the corresponding power is small. And an ultra-thin rectifier bridge is often needed for a novel ultra-thin mobile phone charger and the like.

Disclosure of Invention

To the weak point among the prior art, the utility model provides a two formula high-power copper bar rectifier bridge frames can load 70-88 mil's jumbo size chip crystalline grain, satisfies high-power electronic component's demand, and rectifier bridge volume is little simultaneously, and it is ultra-thin that its packaging structure can accomplish, and the range of application is wider.

In order to realize the technical scheme, the utility model provides a following technical scheme:

a two-piece type high-power copper bar rectifier bridge frame comprises

The upper frame comprises two parallel upper frames, a plurality of upper frame supporting rods fixedly connected between the upper frames and a plurality of upper patches distributed on one sides of the upper frame supporting rods;

the lower frame comprises two parallel lower frames, a plurality of lower frame supporting rods fixedly connected between the lower frames and a plurality of lower patches distributed on one side of the lower frame supporting rods;

the upper frame and the lower frame are combined to form a rectangular wide frame with an upper layer and a lower layer, wherein the upper patch and the lower patch are buckled to form a rectifier bridge structural unit.

In the above scheme, preferably, the surfaces of the upper frame and the lower frame are respectively provided with a plurality of corresponding upper positioning holes and lower positioning holes.

In the above scheme, preferably, a square buckle for preventing dislocation is further arranged on one side surface of the lower frame, and a square clamping groove corresponding to the buckle is arranged on the upper frame.

In the above scheme, it is preferable that the upper patch is composed of a copper sheet a, a copper sheet B, a copper sheet C and a copper sheet D; the lower patch consists of a copper sheet A ', a copper sheet B', a copper sheet C 'and a copper sheet D'; the copper sheet A and the copper sheet C are connected with the upper frame supporting rod through an upper frame pin; the copper sheet A 'and the copper sheet B' are connected with the lower frame supporting rod through lower frame pins.

In the above scheme, preferably, the copper sheets B and a copper sheet a, and the copper sheets C and a copper sheet D are vertically connected in pairs, and the copper sheets B and a copper sheet a are located at the outer sides of the copper sheets C and D with the upper frame support rod as a center line; the copper sheets D 'and A', and the copper sheets C 'and B' are connected in pairs and transversely, the lower frame supporting rod is taken as a center line, and the copper sheets D 'and A' are positioned on the opposite upper sides of the copper sheets C 'and B'.

In the above scheme, it is preferable that the centers of the copper sheets a, B, C 'and D' are all protruded upwards to form welding spots; and the surfaces of the copper sheet A ', the copper sheet B', the copper sheet C and the copper sheet D are respectively provided with press marks corresponding to the welding spots.

Preferably, the indentations are in the form of a grid network.

The packaging structure for loading the rectifier bridge structural unit formed by the two-piece type high-power copper bar rectifier bridge frame is characterized in that the packaging structure is a cuboid, the thickness of the packaging structure is 1.45-1.55mm, and the side length of the packaging structure is 8.05-8.15 mm.

Furthermore, the upper frame pin and the lower frame pin extend out of two sides of the package structure, the upper frame pin and the lower frame pin exposed out of the package structure are provided with a bending portion, and the bottom surface of the bending portion is parallel to the bottom surface of the package structure.

The utility model has the advantages that: the two-piece copper bar frame provided by the utility model can load 70-88mil large-size semiconductor chips, and meets the requirement of high power; the rectifier bridge structure unit with the chip soldered is coated in the packaging body, and the four pins extend out of the packaging body and are bent to form patches parallel to the bottom surface of the packaging body, so that subsequent installation is facilitated. In the packaging structure of the same size, the utility model provides a rectifier bridge constitutional unit can bear more high-power, also can satisfy the development trend requirement that relevant product is ultra-thin, super-miniaturized simultaneously, and thickness can be followed conventional size 2.5mm and reduced to 1.45-1.55mm, further lowers the mounting height of product.

Drawings

Fig. 1 is a schematic diagram of an upper piece of a two-piece high-power copper bar rectifier bridge frame in the scheme.

Fig. 2 is a schematic view of a lower piece of a two-piece high-power copper bar rectifier bridge frame in the scheme.

Fig. 3 is a schematic diagram of a rectifier bridge structural unit formed by combining an upper plate and a lower plate of a two-plate high-power copper bar rectifier bridge frame in the scheme.

Fig. 4 is an enlarged schematic view of an upper patch in the frame of the rectifier bridge of the present disclosure.

Fig. 5 is an enlarged schematic view of a lower patch in the rectifier bridge frame of the present disclosure.

Fig. 6 is a left side view of a package structure for the rectifier bridge structural unit of the present case.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a more detailed description of the present invention, which will enable those skilled in the art to make and use the present invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The utility model provides a two-piece type high-power copper bar rectifier bridge frame as shown in figures 1-4, which comprises

The upper frame 1 comprises two parallel upper frames 10, a plurality of upper frame supporting rods 20 fixedly connected between the upper frames 10, and a plurality of upper patches 30 distributed on one sides of the upper frame supporting rods 20;

the lower frame 1 'comprises two parallel lower frames 10', a plurality of lower frame struts 20 'fixedly connected between the lower frames 10', and a plurality of lower patches 30 'distributed on one side of the lower frame struts 20'.

In the above embodiment, the surfaces of the upper frame 10 and the lower frame 10 'are respectively provided with a plurality of corresponding upper positioning holes 11 and lower positioning holes 11'; the surface of one side of the lower frame 10' is also provided with a square buckle 12' for preventing dislocation, and the upper frame 10 is provided with a square clamping groove 12 corresponding to the buckle 12 '.

During assembly, the front surface of the upper frame 1 is downwards turned over on the front surface of the lower frame 1 'through the upper positioning hole 11 and the lower positioning hole 11', the upper and lower layers of rectangular wide frames are combined to form a double-layer rectangular wide frame, and the positions of the upper frame 1 and the lower frame 1 'are kept stable by the aid of the buckles 12' and the square clamping grooves 12, so that the whole frame is not prone to shifting during welding, and welding reject ratio is reduced. The upper patch 30 and the lower patch 30' are fastened together to form a rectifier bridge structural unit as shown in fig. 2. Arrange rationally between the rectifier bridge constitutional unit, make full use of space for can punching press more rectifier bridge constitutional units in the unit area, set up the pin in muscle position department, be favorable to the machine cutting, reduce the material loss, improve the material rate of utilization.

In the above embodiment, the upper patch 30 is composed of a copper sheet a31, a copper sheet B32, a copper sheet C33, and a copper sheet D34; the lower patch 30' is composed of a copper sheet A '31', a copper sheet B '32', a copper sheet C '33' and a copper sheet D '34 '; the copper sheet A31 and the copper sheet C33 are connected with the upper frame support rod 20 through an upper frame pin 40; the copper sheets A '31' and B '32' are connected with the lower frame support rod 20 'through lower frame pins 40'. The pin pitch of the upper frame pins 40 is 5.08mm as the pin pitch of the lower frame pins 40', and the thickness of the pins can be smaller in packaging structure to package the rectifier bridge structure unit.

The copper sheets B32 and A31, C33 and D34 are vertically connected in pairs, the upper frame support rod 20 is taken as a center line, and the B32 and A31 are positioned on the outer sides of the C33 and D34; the copper sheets D '34' and A '31', C '33' and B '32' are transversely connected in pairs, the lower frame supporting rod 20' is taken as a center line, and the copper sheets D '34' and A '31' are positioned on the opposite upper sides of the copper sheets C '33' and B '32 '.

The centers of the copper sheet A31, the copper sheet B32, the copper sheet C '33' and the copper sheet D '34' are all upwards protruded to form welding spots; and the surfaces of the copper sheet A '31', the copper sheet B '32', the copper sheet C33 and the copper sheet D34 are respectively provided with indentations corresponding to the welding spots.

In the production process, the four chips are respectively soldered on the indentations of the copper sheets A '31', the copper sheets B '32', the copper sheets C33 and the copper sheets D34, then the front surface of the upper frame 1 is turned downwards to be covered on the front surface of the lower frame 1', and the welding spots of the copper sheets A31, the copper sheets B32, the copper sheets C '33' and the copper sheets D '34' are bonded with the indentations, so that a rectifier bridge structural unit is formed. The position of indentation and contact is arranged rationally in the present case, effectively guarantees the stability behind the soldering tin.

As shown in fig. 6, the package structure for loading the rectifier bridge structural unit is a rectangular parallelepiped, and has a thickness of 1.45-1.55mm and a side length of 8.05-8.15 mm. Under the condition of the same side length, the thickness of the packaging structure can be reduced by 45%, and the application range is wider. The structure can package the die to 88mil, which is suitable for higher power source, and the maximum package die of the prior art material with the same package type is 70 mil.

Further, the upper frame pins 40 and the lower frame pins 40 'extend out from two sides of the package structure, and the upper frame pins 40 and the lower frame pins 40' exposed out of the package structure have a bending portion, and a bottom surface of the bending portion is parallel to a bottom surface of the package structure. The bent pin is used as a patch to facilitate subsequent installation work.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims

1. A two-piece type high-power copper bar rectifier bridge frame is characterized by comprising

The upper frame (1) comprises two parallel upper frames (10), a plurality of upper frame supporting rods (20) fixedly connected between the upper frames (10), and a plurality of upper patches (30) distributed on one side of the upper frame supporting rods (20);

the lower frame (1') comprises two lower frames (10') which are parallel, a plurality of lower frame supporting rods (20') which are fixedly connected between the lower frames (10'), and a plurality of lower patches (30') which are distributed on one side of each lower frame supporting rod (20');

the upper frame (1) and the lower frame (1') are combined to form a rectangular wide frame with an upper layer and a lower layer, wherein the upper patch (30) and the lower patch (30') are buckled to form a rectifier bridge structural unit.

2. The two-piece high-power copper bar rectifier bridge frame according to claim 1, wherein the upper frame (10) and the lower frame (10') are respectively provided with a plurality of corresponding upper positioning holes (11) and lower positioning holes (11').

3. The two-piece high-power copper bar rectifier bridge framework according to claim 1, wherein a square buckle (12') for preventing dislocation is further arranged on one side surface of the lower frame (10'), and a square clamping groove (12) corresponding to the buckle (12') is arranged on the upper frame (10).

4. The two-piece high-power copper bar rectifier bridge frame according to claim 1, wherein the upper patch (30) is composed of a copper sheet A (31), a copper sheet B (32), a copper sheet C (33) and a copper sheet D (34); the lower patch (30') is composed of a copper sheet A ' (31'), a copper sheet B ' (32'), a copper sheet C ' (33') and a copper sheet D ' (34 '); the copper sheets A (31) and C (33) are connected with the upper frame support rod (20) through upper frame pins (40); the copper sheets A '(31') and B '(32') are connected with the lower frame support rod (20') through lower frame pins (40').

5. The two-piece high-power copper bar rectifier bridge frame according to claim 4, wherein the copper sheets B (32) and A (31) and the copper sheets C (33) and D (34) are vertically connected in pairs, and the upper frame support rod (20) is taken as a central line, and the copper sheets B (32) and A (31) are positioned at the outer sides of the copper sheets C (33) and D (34); the copper sheets D ' (34') and A ' (31'), and the copper sheets C ' (33') and B ' (32') are transversely connected in pairs, the lower frame support rod (20') is taken as a center line, and the copper sheets D ' (34') and A ' (31') are positioned on the opposite upper sides of the copper sheets C ' (33') and B ' (32 ').

6. The two-piece high-power copper bar rectifier bridge frame according to claim 4, wherein the centers of the copper piece A (31), the copper piece B (32), the copper piece C '(33') and the copper piece D '(34') are all protruded upwards to form a welding point; and the surfaces of the copper sheet A '(31'), the copper sheet B '(32'), the copper sheet C (33) and the copper sheet D (34) are respectively provided with indentations corresponding to the welding spots.

7. The two-piece high-power copper bar rectifier bridge frame according to claim 6, wherein the indentations are in a grid mesh shape.

8. A packaging structure for loading a rectifier bridge structural unit formed by the two-piece type high-power copper bar rectifier bridge framework as claimed in any one of claims 1 to 7, wherein the packaging structure is a cuboid, the thickness of the packaging structure is 1.45-1.55mm, and the side length of the packaging structure is 8.05-8.15 mm.

9. The package structure according to claim 8, wherein the upper frame leads (40) and the lower frame leads (40') extend from two sides of the package structure, and each of the upper frame leads (40) and the lower frame leads (40') exposed out of the package structure has a bending portion, and a bottom surface of the bending portion is parallel to a bottom surface of the package structure.