Rectifying device

Abstract

The utility model discloses a rectification device, and relates to the field of microelectronic devices. The rectification device is characterized by comprising a plastic package shell, two input terminals, two output terminals, four rectification chips, two rectification chip connecting sheets, a protection chip and a protection chip connecting sheet, wherein the two input terminals, the two output terminals, the four rectification chips, the two rectification chip connecting sheets, the protection chip and the protection chip connecting sheets are arranged in the plastic package shell; the output terminal is provided with two rectification chips. The rectification chip connecting sheet is respectively connected with the input terminal and the two rectification chips, and the two rectification chips are respectively located on the two output terminals; the protection chip is arranged on one rectification chip connecting piece, and the protection chip connecting piece is respectively connected with the protection chip and the other rectification chip connecting piece. According to the utility model, the protection chip is arranged between the two input terminals to resist the impact of large current and large voltage, so that the self-protection of the rectification device is realized, and the service life is prolonged; and the structure is simple, the heat dissipation performance is good, and mounting production is convenient.

Description

Technical Field

[0001] The utility model relates to a microelectronic device, and more specifically, to a rectifier device. Background Art

[0002] A rectifier is an electronic device that converts alternating current into direct current.

[0003] The existing Chinese patent with authorization announcement number CN105185757B discloses a heat sink structure surface mount rectifier bridge device, which includes four diode chips, a first metal substrate, a second metal substrate, a negative metal strip and an E-shaped metal substrate; the first and second metal substrates serve as AC input terminals, the bent portion of the negative metal strip serves as a DC negative terminal, and the E-shaped metal substrate serves as a DC positive terminal.

[0004] However, the device in the above patent still has the following problems: the occasional large current and high voltage at the AC input end may cause impact on the components in the circuit and damage the entire rectifier bridge device. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a rectifier device, which has a protection chip between two input terminals to resist the impact of large current and high voltage, thereby achieving self-protection of the rectifier device and extending its service life; and it has a simple structure, good heat dissipation, and is convenient for mounting and production.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rectifier device comprises a plastic-encapsulated shell, and two input terminals, two output terminals, four rectifier chips, two rectifier chip connecting pieces, a protection chip and a protection chip connecting piece arranged in the plastic-encapsulated shell; two rectifier chips are arranged on the output terminals; the rectifier chip connecting pieces are respectively connected to the input terminals and the two rectifier chips, and the two rectifier chips are respectively arranged on the two output terminals;

[0008] The protection chip is arranged on a rectifier chip connecting piece, and the protection chip connecting piece is respectively connected to the protection chip and another rectifier chip connecting piece.

[0009] Furthermore, the two input terminals are respectively a first input terminal and a second input terminal, the two rectifier chip connecting pieces are respectively a first rectifier chip connecting piece and a second rectifier chip connecting piece, the first rectifier chip connecting piece is connected to the first input terminal, and the second rectifier chip connecting piece is connected to the second input terminal;

[0010] The protection chip is arranged on the second rectifier chip connecting piece, and the protection chip connecting piece is respectively connected to the protection chip and the first rectifier chip connecting piece;

[0011] The protection chip is located above the second input terminal, and the length of the second input terminal is greater than that of the first input terminal.

[0012] Furthermore, the first rectifier chip connecting piece and the second rectifier chip connecting piece are both L-shaped.

[0013] Furthermore, the two output terminals are respectively a first output terminal and a second output terminal, and the four rectifier chips are respectively a first rectifier chip, a second rectifier chip, a third rectifier chip and a fourth rectifier chip; the first output terminal is respectively provided with a first rectifier chip and a second rectifier chip, and the second output terminal is respectively provided with a third rectifier chip and a fourth rectifier chip;

[0014] The first rectifier chip connecting piece is connected to the first rectifier chip and the third rectifier chip respectively, and the second rectifier chip connecting piece is connected to the second rectifier chip and the fourth rectifier chip respectively.

[0015] Furthermore, a first conductive sheet is arranged between the first rectifier chip and the first output terminal, a second conductive sheet is arranged between the second rectifier chip and the first output terminal, a third conductive sheet is arranged between the third rectifier chip and the first rectifier chip connecting sheet, and a fourth conductive sheet is arranged between the fourth rectifier chip and the second rectifier chip connecting sheet.

[0016] Furthermore, a bending portion is formed on each of the first rectifier chip connecting piece, the second rectifier chip connecting piece and the protection chip connecting piece.

[0017] Furthermore, the bottom wall of the input terminal is provided with an input extension piece, and the bottom wall of the output terminal is provided with an output extension piece; the bottom walls of the input extension piece and the output extension piece protrude or are flush with the bottom wall of the plastic package shell, serving as an electrical connection area of ​​the rectifier device.

[0018] Furthermore, one end of the input extension piece protrudes from the input terminal, and the width of the input extension piece is smaller than the width of the input terminal; both ends of the output extension piece protrude from the output terminals respectively, and the width of the output extension piece is smaller than the width of the output terminal.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. The two input terminals are used as AC input terminals, and the two output terminals are used as DC output terminals. A protection chip is set between the two input terminals to resist the impact of large current and high voltage, realize self-protection of the rectifier device, and thus extend the service life;

[0021] 2. The second input terminal is used to carry the protection chip. Setting the second input terminal to be longer is conducive to arranging the protection chip and improving the stability of the conductive connection and structure;

[0022] 3. Simplify the layout structure, facilitate mounting, and optimize the size of the rectifier device;

[0023] 4. The bottom walls of the input extension piece and the output extension piece protrude or are flush with the bottom wall of the plastic package shell, serving as the electrical connection area of ​​the rectifier device; this can eliminate the pin structure, facilitate connection, and improve the heat dissipation effect of the rectifier device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the rectifier device in the embodiment is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure of the rectifier device in the embodiment is shown in FIG. Figure 2 ;

[0026] Figure 3 The structure of the rectifier device in the embodiment is shown in FIG. Figure 3 .

[0027] In the figure: 1. first output terminal; 11. first output extension sheet; 2. second output terminal; 21. second output extension sheet; 3. first input terminal; 31. first input extension sheet; 4. second input terminal; 41. second input extension sheet; 51. first rectifier chip; 52. second rectifier chip; 53. third rectifier chip; 54. fourth rectifier chip; 55. first conductive sheet; 56. second conductive sheet; 57. third conductive sheet; 58. fourth conductive sheet; 6. first rectifier chip connecting sheet; 7. second rectifier chip connecting sheet; 8. protection chip; 9. protection chip connecting sheet. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention. Example

[0030] A rectifying device, referring to Figures 1 to 3It includes a plastic-encapsulated shell and two input terminals, two output terminals, four rectifier chips, two rectifier chip connecting pieces, a protection chip 8 and a protection chip connecting piece 9 arranged in the plastic-encapsulated shell; two rectifier chips are arranged on the output terminal; the rectifier chip connecting piece is respectively connected to the input terminal and the two rectifier chips, and the two rectifier chips are respectively located on the two output terminals; the protection chip 8 is arranged on one of the rectifier chip connecting pieces, and the protection chip connecting piece 9 is respectively connected to the protection chip 8 and the other rectifier chip connecting piece; in this embodiment, the two input terminals serve as AC input terminals, and the two output terminals serve as DC output terminals. A protection chip is arranged between the two input terminals, which can resist the impact of large current and large voltage, realize self-protection of the rectifier device, and thus extend the service life.

[0031] Reference Figures 1 to 3 Specifically, the two input terminals are respectively the first input terminal 3 and the second input terminal 4, and the two rectifier chip connecting pieces are respectively the first rectifier chip connecting piece 6 and the second rectifier chip connecting piece 7; the first rectifier chip connecting piece 6 is connected to the first input terminal 3, and the second rectifier chip connecting piece 7 is connected to the second input terminal 4; the protection chip 8 is arranged on the second rectifier chip connecting piece 7, and the protection chip connecting piece 9 is respectively connected to the protection chip 8 and the first rectifier chip connecting piece 6; preferably, in this embodiment, the protection chip 8 is located above the second input terminal 4, and the length of the second input terminal 4 is greater than the length of the first input terminal 3; the second input terminal 4 is used to carry the protection chip 8, and setting the second input terminal 4 to be longer is conducive to arranging the protection chip 8 and improving the conductive connection and the stability of the structure; specifically, in this embodiment, the first rectifier chip connecting piece 6 and the second rectifier chip connecting piece 7 are both L-shaped, so as to facilitate matching the first input terminal and the second input terminal; specifically, the side wall of the first rectifier chip connecting piece 6 is provided with a clearance notch, so as to be L-shaped; the side wall of the second rectifier chip connecting piece 7 is provided with a connection extension portion, so as to be L-shaped.

[0032] Reference Figures 1 to 3 Specifically, the two output terminals are respectively a first output terminal 1 and a second output terminal 2, and the four rectifier chips are respectively a first rectifier chip 51, a second rectifier chip 52, a third rectifier chip 53 and a fourth rectifier chip 54; the first output terminal 1 is respectively provided with a first rectifier chip 51 and a second rectifier chip 52, and the second output terminal 2 is respectively provided with a third rectifier chip 53 and a fourth rectifier chip 54; the first rectifier chip connecting piece 6 is respectively connected to the first rectifier chip 51 and the third rectifier chip 53, and the second rectifier chip connecting piece 7 is respectively connected to the second rectifier chip 52 and the fourth rectifier chip 54.

[0033] Reference Figures 1 to 3Specifically, a first conductive sheet 55 is arranged between the first rectifier chip 51 and the first output terminal 1, a second conductive sheet 56 is arranged between the second rectifier chip 52 and the first output terminal 1, a third conductive sheet 57 is arranged between the third rectifier chip 53 and the first rectifier chip connecting sheet 6, and a fourth conductive sheet 58 is arranged between the fourth rectifier chip 54 and the second rectifier chip connecting sheet 7; the use of conductive sheets to connect the rectifier chips can simplify the production process of the output terminals and the rectifier chip connecting sheets, and facilitate mounting; specifically, the first rectifier chip connecting sheet 6, the second rectifier chip connecting sheet 7 and the protection chip connecting sheet 9 are respectively formed with bending portions, so that different connection heights can be matched, which is convenient for mounting.

[0034] Reference Figures 1 to 3 In this embodiment, the first output terminal 1, the second output terminal 2 and the first input terminal 3 are arranged in parallel and spaced apart, the first output terminal 1, the second output terminal 2 and the second input terminal 4 are arranged in parallel and spaced apart, the first rectifier chip connecting piece 6 is arranged vertically to the output terminal, and the second rectifier chip connecting piece 7 is arranged vertically to the output terminal, which can simplify the arrangement structure, facilitate mounting, and optimize the size of the rectifier device.

[0035] Reference Figures 1 to 3 Specifically, the bottom wall of the first input terminal 3 is provided with a first input extension piece 31, the bottom wall of the second input terminal 4 is provided with a second input extension piece 41, the bottom wall of the first output terminal 1 is provided with a first output extension piece 11, and the bottom wall of the second output terminal 2 is provided with a second output extension piece 21; in this embodiment, the bottom walls of the input extension piece and the output extension piece protrude or are flush with the bottom wall of the plastic package shell, serving as the electrical connection area of ​​the rectifier device; that is, the bottom walls of the input extension piece and the output extension piece are exposed to the plastic package shell; in this way, the pin structure can be omitted, the connection is convenient, and the heat dissipation effect of the rectifier device can be improved.

[0036] Reference Figures 1 to 3 Preferably, one end of the first input extension piece 31 protrudes from the first input terminal 3, and the width of the first input extension piece 31 is smaller than the width of the first input terminal 3; one end of the second input extension piece 41 protrudes from the second input terminal 4, and the width of the second input extension piece 41 is smaller than the width of the second input terminal 4; both ends of the first output extension piece 11 protrude from the first output terminal 1 respectively, and the width of the first output extension piece 11 is smaller than the width of the first output terminal 1; both ends of the second output extension piece 21 protrude from the second output terminal 2 respectively, and the width of the second output extension piece 21 is smaller than the width of the second output terminal 2; the extension piece adopts a smaller width, which can facilitate the conductive connection of the rectifier device on the one hand, and improve the structural strength and stability after plastic packaging on the other hand; the protruding ends of the extension piece are convenient for mass production.

Claims

1. A rectifier device, characterized in that: The invention comprises a plastic-encapsulated shell and two input terminals, two output terminals, four rectifier chips, two rectifier chip connecting pieces, a protection chip and a protection chip connecting piece arranged in the plastic-encapsulated shell; two rectifier chips are arranged on the output terminals; the rectifier chip connecting pieces are respectively connected to the input terminals and the two rectifier chips, and the two rectifier chips are respectively arranged on the two output terminals; The protection chip is arranged on a rectifier chip connecting piece, and the protection chip connecting piece is respectively connected to the protection chip and another rectifier chip connecting piece.

2. The rectifier device according to claim 1, characterized in that: The two input terminals are respectively a first input terminal and a second input terminal, and the two rectifier chip connecting pieces are respectively a first rectifier chip connecting piece and a second rectifier chip connecting piece, wherein the first rectifier chip connecting piece is connected to the first input terminal, and the second rectifier chip connecting piece is connected to the second input terminal; The protection chip is arranged on the second rectifier chip connecting piece, and the protection chip connecting piece is respectively connected to the protection chip and the first rectifier chip connecting piece; The protection chip is located above the second input terminal, and the length of the second input terminal is greater than that of the first input terminal.

3. The rectifier device according to claim 2, characterized in that: The first rectifier chip connecting piece and the second rectifier chip connecting piece are both L-shaped.

4. The rectifier device according to claim 2, characterized in that: The two output terminals are respectively a first output terminal and a second output terminal, and the four rectifier chips are respectively a first rectifier chip, a second rectifier chip, a third rectifier chip and a fourth rectifier chip; the first output terminal is respectively provided with a first rectifier chip and a second rectifier chip, and the second output terminal is respectively provided with a third rectifier chip and a fourth rectifier chip; The first rectifier chip connecting piece is connected to the first rectifier chip and the third rectifier chip respectively, and the second rectifier chip connecting piece is connected to the second rectifier chip and the fourth rectifier chip respectively.

5. The rectifier device according to claim 4, characterized in that: A first conductive sheet is arranged between the first rectifier chip and the first output terminal, a second conductive sheet is arranged between the second rectifier chip and the first output terminal, a third conductive sheet is arranged between the third rectifier chip and the first rectifier chip connecting sheet, and a fourth conductive sheet is arranged between the fourth rectifier chip and the second rectifier chip connecting sheet.

6. The rectifier device according to claim 2, characterized in that: The first rectifier chip connecting piece, the second rectifier chip connecting piece and the protection chip connecting piece are respectively formed with a bending portion.

7. The rectifier device according to claim 1, characterized in that: The bottom wall of the input terminal is provided with an input extension piece, and the bottom wall of the output terminal is provided with an output extension piece; the bottom walls of the input extension piece and the output extension piece protrude or are flush with the bottom wall of the plastic package shell, serving as the electrical connection area of ​​the rectifier device.

8. The rectifier device according to claim 7, characterized in that: One end of the input extension piece protrudes from the input terminal, and the width of the input extension piece is smaller than the width of the input terminal; both ends of the output extension piece protrude from the output terminals respectively, and the width of the output extension piece is smaller than the width of the output terminal.

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