Low-stress rectifier bridge

Abstract

The utility model relates to the technical field of rectifier bridges, in particular to a low-stress rectifier bridge. According to the technical scheme, the device comprises a shell, a heat dissipation bottom plate is arranged on the inner wall of the rear side of the shell, and a positive plate, a first alternating-current polar plate, a second alternating-current polar plate and a negative plate are arranged on the top face of the heat dissipation bottom plate. By arranging the shell, the heat dissipation bottom plate, the positive plate, the first alternating-current polar plate, the second alternating-current polar plate, the negative plate, the first diode, the second diode, the third diode, the fourth diode, the protective shell and the cooling shell inside can be protected, mechanical stress borne by the internal structure is reduced, and heat dissipation protection can be conveniently carried out on the portion from the positive plate to the cooling shell by arranging the heat dissipation bottom plate; the direct current output pins and the alternating current output pins can be protected from being bent by arranging the output pin sheaths, mechanical stress is reduced, heat dissipation can be facilitated by arranging the heat dissipation holes I, the heat dissipation holes II and the heat dissipation holes III, the working temperature of the rectifier bridge is reduced, and the thermal stress is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifier bridge technical field especially relates to a low stress rectifier bridge. BACKGROUND

[0002] Rectifier bridge is also called bridge rectifier, which is a circuit element for converting alternating current into direct current. It is composed of four diodes or transistors arranged in a bridge structure, which is used to rectify the positive and negative half cycles of the alternating current into a single direction of direct current. During operation, rectifier bridge generates heat, especially in high current and high power applications, diodes will heat up. If the heat cannot be dissipated in time and effectively, the temperature of the diodes of the rectifier bridge will rise, which may cause its performance degradation or even burn out. During production and assembly, the diodes of the rectifier bridge need to be connected to the circuit board through welding. The mechanical stress during welding may affect the packaging of the diodes or the reliability of the circuit board. If the thermal stress and mechanical stress on the rectifier bridge cannot be reduced, it may affect the service life of the rectifier bridge. Therefore, a low stress rectifier bridge is needed. SUMMARY

[0003] The utility model relates to rectifier bridge technical field especially relates to a low stress rectifier bridge.

[0004] The utility model discloses a low stress rectifier bridge, including the casing, the rear side inner wall of casing is provided with the heat dissipation bottom plate, the top surface of heat dissipation bottom plate is provided with the positive plate, alternating current plate no.

[0005] Preferably, the casing includes a frame, and the front and rear sides of the frame are provided with shell plates.

[0006] Preferably, a plurality of heat dissipation holes are formed in the top surface of the frame, and a plurality of through holes are formed in the front side of the shell plates.

[0007] Preferably, a cavity is formed in the interior of the heat dissipation bottom plate, a cooling liquid is arranged in the cavity, and a through hole is formed in the front side of the heat dissipation bottom plate.

[0008] Preferably, the left and right sides of the protective shell are provided with heat dissipation holes two.

[0009] Preferably, the cooling fins are arranged in the interior of the cooling shell and are uniformly distributed, and the interior of the cooling shell is provided with cooling liquid.

[0010] Preferably, the DC output pin comprises two L-shaped welding pins one, and the bottom surface of the two L-shaped welding pins one is provided with a same pin body one.

[0011] Preferably, the AC output pin comprises two L-shaped welding pins two, and the bottom surface of the two L-shaped welding pins two is provided with a same pin body two.

[0012] Preferably, the output pin sheath is wrapped outside the corresponding DC output pin and AC output pin, and the top surface and the bottom surface of the output pin sheath are provided with a plurality of heat dissipation holes three.

[0013] Compared with the prior art, the utility model has the advantages of the following beneficial technical effects:

[0014] The shell can protect the internal heat dissipation bottom plate, the positive plate, the AC plate one, the AC plate two, the negative plate, the diode one, the diode two, the diode three, the diode four, the protective shell and the cooling shell, reduce the mechanical stress of the internal structure, the heat dissipation bottom plate can be used to heat dissipation protection of the positive plate to the cooling shell, reduce the thermal stress, the output pin sheath can protect the DC output pin and the AC output pin from being bent, reduce the mechanical stress, the heat dissipation holes one, the heat dissipation holes two and the heat dissipation holes three can be used to heat dissipation, reduce the working temperature of the rectifier bridge and reduce the thermal stress. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the structure schematic diagram of the shell in the utility model;

[0017] Figure 3 It is the internal structure schematic diagram of the shell in the utility model;

[0018] Figure 4 It is the structure schematic diagram of the heat dissipation bottom plate in the utility model;

[0019] Figure 5 It is the partial structure schematic diagram of the interior of the shell in the utility model;

[0020] Figure 6 It is the partial structure sectional view in the utility model;

[0021] Figure 7 It is the partial structure explosion drawing in the utility model.

[0022] Fig. 1 is a shell; 101 is a frame; 102 is a shell plate; 2 is a heat dissipation bottom plate; 3 is a positive plate; 4 is an alternating plate one; 5 is an alternating plate two; 6 is a negative plate; 7 is a diode one; 8 is a diode two; 9 is a diode three; 10 is a diode four; 11 is a protective shell; 12 is a cooling fin; 13 is a cooling shell; 14 is a direct current output foot; 1401 is an L-shaped welding foot one; 1402 is a foot body one; 15 is an alternating output foot; 1501 is an L-shaped welding foot two; 1502 is a foot body two; 16 is an output foot sheath; 17 is a heat dissipation hole one; 18 is a through hole one; 19 is a through hole two; 20 is a heat dissipation hole two; 21 is a heat dissipation hole three. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model is further explained below in combination with the drawings and specific embodiments. EMBODIMENT

[0024] As Figures 1 to 7 shown, the utility model provides a low stress rectifier bridge, including shell 1, shell 1 includes frame 101, both sides of frame 101 are provided with shell plate 102, frame 101 is connected with shell plate 102 fixedly, the top surface of frame 101 is provided with a plurality of heat dissipation holes one 17, is convenient for heat dissipation, reduces the thermal stress of equipment, the front side of shell plate 102 is provided with through hole one 18, the inner wall of rear side of shell 1 is provided with heat dissipation bottom plate 2, heat dissipation bottom plate 2 is fixedly installed in the inside of shell 1, the inside of heat dissipation bottom plate 2 is provided with cavity, the inside of cavity is provided with cooling liquid, is convenient for the heat dissipation of positive plate 3 to negative plate 6, and the front side of heat dissipation bottom plate 2 is provided with through hole two 19, the top surface of heat dissipation bottom plate 2 is provided with positive plate 3, alternating plate one 4, alternating plate two 5, negative plate 6, the front side of positive plate 3 and alternating plate one 4 is provided with same diode one 7, positive plate 3, alternating plate one 4 and diode one 7 are connected fixedly, the front side of alternating plate one 4 and negative plate 6 is provided with same diode two 8, alternating plate one 4, negative plate 6 and diode two 8 are connected fixedly;

[0025] The front side of the alternating pole plate two 5 and the negative pole plate 6 is provided with the same diode three 9, the alternating pole plate two 5, the negative pole plate 6 and the diode three 9 are fixedly connected, the front side of the positive pole plate 3 and the alternating pole plate two 5 is provided with the same diode four 10, the positive pole plate 3, the alternating pole plate two 5 and the diode four 10 are fixedly connected, the outside of the diode one 7, the diode two 8, the diode three 9 and the diode four 10 is provided with the protective shell 11, the mechanical stress received by the diode one 7 to the diode four 10 can be reduced through the protective shell 11, the left side and the right side of the protective shell 11 are provided with the heat dissipation holes two 20, the internal structure is convenient for heat dissipation, the front side of the protective shell 11 is provided with a plurality of cooling fins 12, the protective shell 11 and the cooling fins 12 are fixedly connected, the front side of the protective shell 11 is provided with the cooling shell 13, the front side of the protective shell 11 and the rear side of the cooling shell 13 are fixedly connected, the cooling fins 12 are located in the inside of the cooling shell 13 and are evenly distributed, the inside of the cooling shell 13 is provided with cooling liquid, the heat generated by the internal structure of the protective shell 11 is convenient for being led out through the cooling fins 12, and the cooling fins 12 are heat dissipated through the cooling liquid in the inside of the cooling shell 13;

[0026] The bottom surface of the positive pole plate 3 and the negative pole plate 6 is provided with the direct current output foot 14, the positive pole plate 3, the negative pole plate 6 and the direct current output foot 14 are fixedly connected, the direct current output foot 14 comprises two L-shaped welding feet one 1401, the bottom surface of the two L-shaped welding feet one 1401 is provided with the same foot body one 1402, the stability of the welding part is convenient for being improved, the bottom surface of the alternating pole plate one 4 and the alternating pole plate two 5 is provided with the alternating current output foot 15, the alternating current output foot 15 comprises two L-shaped welding feet two 1501, the bottom surface of the two L-shaped welding feet two 1501 is provided with the same foot body two 1502, the stability of the welding part is convenient for being improved, the mechanical stress received by the direct current output foot 14 and the alternating current output foot 15 is reduced, the bottom surface of the shell body 1 is provided with a plurality of output foot sheaths 16, the bottom surface of the shell body 1 and the output foot sheaths 16 are fixedly connected, the output foot sheaths 16 are covered outside the corresponding direct current output foot 14 and alternating current output foot 15, the direct current output foot 14 and the alternating current output foot 15 are convenient for being protected and reducing mechanical stress, a plurality of heat dissipation holes three 21 are formed in the top surface and the bottom surface of the output foot sheaths 16, the direct current output foot 14 and the alternating current output foot 15 are convenient for being heat dissipated and reducing thermal stress.

[0027] In the embodiment, when the device is used, the positive plate 3, the alternating plate one 4, the alternating plate two 5 and the negative plate 6 can be cooled by the cooling liquid in the heat dissipation bottom plate 2, the thermal stress generated by work is reduced, the mechanical stress suffered by the positive plate 3 to the cooling shell 13 is protected by the shell 1, the thermal stress generated by the work of the diode one 7 to the diode four 10 is cooled and protected by the protection shell 11 to the cooling shell 13, the thermal dissipation protection is carried out through the heat dissipation hole one 17, the heat dissipation hole two 20 and the heat dissipation hole three 21, the thermal stress is reduced, the stability of the welding position is improved by setting the L-shaped welding leg one 1401 and the L-shaped welding leg two 1501, and the mechanical stress is reduced.

[0028] The above specific embodiments are only preferred embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the above specific embodiments can be made by the person skilled in the art in multiple alternative improvements and combinations.

Claims

1. A low-stress rectifier bridge comprising a housing (1), characterized in that: The rear inner wall of the shell (1) is provided with a heat dissipation bottom plate (2), the top surface of the heat dissipation bottom plate (2) is provided with a positive plate (3), an alternating plate one (4), an alternating plate two (5), and a negative plate (6), the front side of the positive plate (3) and the alternating plate one (4) is provided with a same diode one (7), the front side of the alternating plate one (4) and the negative plate (6) is provided with a same diode two (8), the front side of the alternating plate two (5) and the negative plate (6) is provided with a same diode three (9), the front side of the positive plate (3) and the alternating plate two (5) is provided with a same diode four (10), the outside of the diode one (7), the diode two (8), the diode three (9) and the diode four (10) is provided with a protective shell (11), the front side of the protective shell (11) is provided with a plurality of heat dissipation fins (12), the front side of the protective shell (11) is provided with a cooling shell (13), the bottom surface of the positive plate (3) and the negative plate (6) is provided with a direct current output pin (14), the bottom surface of the alternating plate one (4) and the alternating plate two (5) is provided with an alternating current output pin (15), and the bottom surface of the shell (1) is provided with a plurality of output pin sheaths (16).

2. A low-stress rectifier bridge according to claim 1, characterized in that The shell (1) comprises a frame (101), and the front and rear sides of the frame (101) are provided with shell plates (102).

3. A low-stress rectifier bridge according to claim 2, characterized in that A plurality of heat dissipation holes one (17) are formed in the top surface of the frame (101), and a through hole one (18) is formed in the front side of each shell plate (102).

4. A low-stress rectifier bridge according to claim 1, wherein A cavity is formed in the interior of the heat dissipation bottom plate (2), cooling liquid is arranged in the cavity, and a through hole two (19) is formed in the front side of the heat dissipation bottom plate (2).

5. A low-stress rectifier bridge according to claim 1, wherein Heat dissipation holes two (20) are formed in the left and right sides of the protective shell (11).

6. A low-stress rectifier bridge according to claim 1, wherein, The heat dissipation fins (12) are arranged in the interior of the cooling shell (13) and are uniformly distributed, and cooling liquid is arranged in the interior of the cooling shell (13).

7. A low stress rectifier bridge according to claim 1, wherein, The direct current output pin (14) comprises two L-shaped welding pins one (1401), and the bottom surface of the two L-shaped welding pins one (1401) is provided with a same pin body one (1402).

8. A low-stress rectifier bridge according to claim 1, wherein, The alternating current output pin (15) comprises two L-shaped welding pins two (1501), and the bottom surface of the two L-shaped welding pins two (1501) is provided with a same pin body two (1502).

9. A low-stress rectifier bridge according to claim 1, wherein, The output pin sheath (16) is arranged outside the corresponding direct current output pin (14) and alternating current output pin (15), and a plurality of heat dissipation holes three (21) are formed in the top surface and the bottom surface of the output pin sheath (16).

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