CN210247384U

CN210247384U - Water cooling plate for laser high-frequency power switch

Info

Publication number: CN210247384U
Application number: CN201921228121.6U
Authority: CN
Inventors: Biao Peng; 彭彪; Changzhou Ni; 倪昌舟; Lei Zi; 訾磊; Nan Chen; 陈楠; Yang Wang; 王洋; Yanbin Du; 杜彦斌
Original assignee: Shanghai Haoli Mechanical And Electrical Technology Co ltd
Current assignee: Millimeter Electromechanical (Suzhou) Co.,Ltd.
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-03
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a be used for laser high frequency power switch water-cooling board mainly relates to water-cooling board technical field. Including base plate, apron, a plurality of fin, the back of base plate is equipped with the runner, the one end at the top of base plate is equipped with the water supply connector with the runner intercommunication, and the other end is equipped with the water connectors with the runner intercommunication, the fin is installed in the runner, the apron is located the bottom of base plate and vacuum welding is on the base plate. The beneficial effects of the utility model reside in that: the water-cooling heat dissipation device has the advantages that the water-cooling heat dissipation is adopted, the welding layer can be prevented from being penetrated by the power module mounting screw hole, the form of the flow channel can be guaranteed, the heat can be effectively dissipated, and the sealing performance of the flow channel and the welding strength of the cover plate are guaranteed.

Description

Water cooling plate for laser high-frequency power switch

Technical Field

The utility model relates to a water-cooling board technical field specifically is a be used for laser high frequency power switch water-cooling board.

Background

Modern power electronic technology is the basis of the development of switching power supply technology, and with the continuous emergence of novel power electronic devices and circuit topologies suitable for higher switching frequencies, the modern power supply technology will be rapidly developed under the promotion of actual needs. Under the traditional application technology, the performance of the switching power supply is influenced due to the limitation of the performance of the power device, most of loss of the switching power supply is converted into heat, the heat dissipation effect of the power supply is closely related to the structural design of the power supply, if the structural design of the power supply is improper, the heat generated by the switching device cannot be timely removed, the failure rate of the switching device is greatly increased along with the rise of the temperature, and the switching device is burnt due to overhigh temperature in serious conditions, so that the service life and the reliability of the power supply are directly influenced. Therefore, as the switching power supply is continuously developed towards high power, high frequency and high power density, the heat dissipation of the power supply begins to tend to water cooling, and the traditional air cooling cannot meet the requirement. The conventional water cooling plate is mostly composed of a base plate and a cover plate, a groove is arranged on the front surface of the base plate and serves as a flow channel, the cover plate covers the front surface of the base plate and is welded on the base plate in a vacuum mode, wherein vacuum brazing is a common welding mode, and because a plurality of power module installation screw holes are arranged on the front surface (the cover plate) of the base plate serving as a high-frequency power switch, the screw holes inevitably penetrate through a welding layer between the base plate and the cover plate, so that certain influence is caused on the sealing performance of the flow channel and the welding strength of the cover plate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that exists among the prior art, provide one kind and arrange the apron in the base plate back be used for laser high frequency power switch water-cooling board, it adopts the water-cooling heat dissipation, can avoid power module installation screw to punch the welded layer, can guarantee the form of runner again, can effectively dispel the heat, guarantees the closure of runner and the welding strength of apron.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

the utility model provides a be used for laser high frequency power switch water-cooling board, includes base plate, apron, a plurality of fin, the back of base plate is equipped with the runner, the one end at the top of base plate is equipped with the water supply connector with the runner intercommunication, and the other end is equipped with the water outlet connector with the runner intercommunication, the fin is installed in the runner, the apron is located the bottom of base plate and vacuum welding is on the base plate.

An aluminum block is arranged between the fin and the cover plate.

The thickness of the aluminum block is different.

The aluminium pig passes through the locating pin and installs in the runner, the depth direction of following the runner on the inner wall of runner is equipped with the first installation position that suits with the locating pin, be equipped with the second installation position that suits with the locating pin along the thickness direction of aluminium pig on the lateral wall of aluminium pig, the cross section of first installation position, second installation position is the semicircular hole.

And a positioning plate matched with the fins is arranged in the flow channel.

The runner includes the runner unit that a plurality of communicates in proper order, the middle part of runner unit is equipped with the carrier block along the width direction of base plate, the both sides of carrier block upper and runner unit all are equipped with power module installation screw.

Contrast prior art, the beneficial effects of the utility model reside in that:

the utility model discloses set up the runner at the back of base plate, the lap welding forms the runner that is used for the coolant liquid to flow between base plate and apron, and power module installation screw is seted up from the front of base plate, does not have power module installation screw on the apron, can avoid power module installation screw to punch the welding layer between base plate and the apron, can effectively dispel the heat, guarantees the closure of runner and the welding strength of apron.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the internal structure of the substrate;

FIG. 6 is a bottom view of the base plate;

fig. 7 is a schematic structural view of an aluminum block.

The reference numbers in the drawings: 1. a substrate; 2. a cover plate; 3. a fin; 4. a flow channel; 41. a flow passage unit; 42. a bearing block; 43. the power module is provided with a screw hole; 5. a water inlet joint; 6. a water outlet joint; 7. an aluminum block; 8. positioning pins; 9. a first mounting location; 10. a second mounting location; 11. positioning a plate;

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

A be used for laser high frequency power switch water-cooling board, including base plate 1, apron 2, a plurality of fin 3, the quantity of fin 3 is set for as required, the back of base plate 1 is equipped with runner 4, the one end at base plate 1's top is equipped with the water supply connector 5 with 4 intercommunications of runner, and the other end is equipped with the water connectors 6 with 4 intercommunications of runner, fin 3 is installed in runner 4, apron 2 is located base plate 1's bottom and vacuum welding on base plate 1. The utility model discloses set up runner 4 at the back of base plate 1, adopt water-cooling heat dissipation, the coolant liquid flows in runner 4, fin 3 can increase area of contact, improve the radiating effect, 2 welding of apron are at base plate 1's back, form runner 4 that is used for the coolant liquid to flow between base plate 1 and apron 2, power module installation screw 43 is seted up from base plate 1's front, there is not power module installation screw 43 on apron 2, can avoid power module installation screw 43 to punch the welding layer between base plate 1 and the apron 2, can effectively dispel the heat, guarantee the closure of runner and the welding strength of apron.

In order to prevent the fins from shaking, an aluminum block 7 is arranged between the fins 3 and the cover plate 2, and the aluminum block 7 compresses the fins 3 to prevent the fins 3 from shaking.

The thickness of the aluminum block 7 is different from one another in order to enhance the effect of vacuum brazing.

In order to facilitate the installation of the aluminum block, the aluminum block 7 is installed in the flow channel 4 through the positioning pin 8, a first installation position 9 matched with the positioning pin 8 is arranged on the inner wall of the flow channel 4 along the depth direction of the flow channel 4, a second installation position 10 matched with the positioning pin 8 is arranged on the side wall of the aluminum block 7 along the thickness direction of the aluminum block 7, the cross sections of the first installation position 9 and the second installation position 10 are semi-circular holes, the first installation position 9 and the second installation position 10 form a complete installation hole matched with the positioning pin 8, after the aluminum block 7 is covered on the fin 3, the position of the aluminum block 7 is adjusted, so that the first installation position 9 and the second installation position 10 form a complete installation hole, and after the positioning pin 8 is inserted into the installation hole, the aluminum block 7 can be prevented from moving along the flow channel 4.

In order to facilitate installation of the fins, the flow channel 4 is provided with positioning plates 11 corresponding to the fins 3, each fin 3 corresponds to two positioning plates 11, and the two positioning plates 11 are respectively positioned at two ends of each fin 3 to limit the fins 3 between the two positioning plates 11.

In order to improve the life of base plate, runner 4 includes the runner unit 41 that a plurality of communicates in proper order, runner unit 41's middle part is equipped with carrier block 42 along base plate 1's width direction, carrier block 42 is last, runner unit 41's both sides all are equipped with power module installation screw 43, and carrier block 42 adopts the integral type structure with base plate 1, and power module installation screw 43 is located the position that is thicker on base plate 1 for there is not power module installation screw 43 in coolant liquid runner 4, can improve the life of base plate.

Example (b): a be used for laser high frequency power switch water-cooling board, including base plate 1, apron 2, six fins 3, fin 3 can adopt stamping forming's fin in advance. Runner 4 is processed through CNC processing mode in the back of base plate 1, the one end at the top of base plate 1 is equipped with the water supply connector 5 with runner 4 intercommunication, and the other end is equipped with the water outlet connector 6 with runner 4 intercommunication, runner 4 includes three runner unit 41 that communicates in proper order, when processing runner 4 through CNC processing mode runner 41 a carrier block 42 along base plate 1's width direction is reserved at runner unit 41's middle part, power module installation screw 43 has all been seted up to carrier block 42 upper and runner unit 41's both sides, and power module installation screw 43 is located the position that is thicker on base plate 1 for there is not power module installation screw 43 in the runner 4 of coolant liquid runner, can improve the life of base plate. The fin 3 is arranged in the flow channel 4, the fins 3 are arranged on two sides of each bearing block 42, the positioning plates 11 matched with the fins 3 are arranged in the flow channel 4, an integrated structure can be adopted between the positioning plates 11 and the base plate 1, each fin 3 corresponds to two positioning plates 11, the two positioning plates 11 are respectively positioned at two ends of each fin 3, and the fins 3 are limited between the two positioning plates 11. Be equipped with aluminium pig 7 between fin 3 and the apron 2, aluminium pig 7 compresses tightly fin 3 can prevent that fin 3 from rocking. Further, the aluminum block 7 has a different thickness from one another in order to enhance the effect of vacuum brazing. The aluminum block 7 is installed in the flow channel 4 through the positioning pin 8, a first installation position 9 matched with the positioning pin 8 is arranged on the inner wall of the flow channel 4 in the depth direction of the flow channel 4, a second installation position 10 matched with the positioning pin 8 is arranged on the side wall of the aluminum block 7 in the thickness direction of the aluminum block 7, the cross sections of the first installation position 9 and the second installation position 10 are semicircular holes, the first installation position 9 and the second installation position 10 form a complete installation hole matched with the positioning pin 8, the aluminum block 7 is covered on the fin 3, the position of the aluminum block 7 is adjusted, the first installation position 9 and the second installation position 10 form a complete installation hole, the positioning pin 8 is inserted into the installation hole, the aluminum block 7 can be prevented from moving along the flow channel 4, and installation is convenient and rapid. The cover plate 2 is positioned at the bottom of the base plate 1 and is welded on the base plate 1 in a vacuum welding mode, after the fins 3 and the aluminum blocks 7 are installed in place, the bottom of the base plate 1 is covered with a brazing filler metal plate, then the cover plate 2 is covered on the brazing filler metal plate, the cover plate 2 is fixed on the base plate 1 in a vacuum brazing welding mode, the utility model is provided with a flow passage 4 on the back of the base plate 1, water cooling is adopted, cooling liquid flows in the flow passage 4, the fins 3 can increase the contact area and improve the heat dissipation effect, the cover plate 2 is welded on the back of the base plate 1, a flow passage 4 for flowing a cooling liquid is formed between the base plate 1 and the cover plate 2, a power module mounting screw hole 43 is opened from the front surface of the base plate 1, the cover plate 2 is not provided with the power module mounting screw hole 43, so that the power module mounting screw hole 43 can be prevented from penetrating through a welding layer between the base plate 1 and the cover plate 2, heat can be effectively dissipated, and the sealing property of a flow channel and the welding strength of the cover plate are ensured.

Claims

1. The utility model provides a be used for laser high frequency power switch water-cooling board, includes base plate (1), apron (2), a plurality of fin (3), characterized by: the back of base plate (1) is equipped with runner (4), the one end at the top of base plate (1) is equipped with water supply connector (5) with runner (4) intercommunication, and the other end is equipped with water outlet connector (6) with runner (4) intercommunication, fin (3) are installed in runner (4), apron (2) are located the bottom of base plate (1) and vacuum welding is on base plate (1).

2. The water cooling plate for the laser high-frequency power switch as claimed in claim 1, wherein: an aluminum block (7) is arranged between the fin (3) and the cover plate (2).

3. A water-cooling plate for a laser high-frequency power switch according to claim 2, wherein: the thickness of the aluminum block (7) is different.

4. A water-cooling plate for a laser high-frequency power switch according to claim 2, wherein: the aluminum block (7) is installed in the flow channel (4) through the positioning pin (8), a first installation position (9) matched with the positioning pin (8) is arranged on the inner wall of the flow channel (4) along the depth direction of the flow channel (4), a second installation position (10) matched with the positioning pin (8) is arranged on the side wall of the aluminum block (7) along the thickness direction of the aluminum block (7), and the cross sections of the first installation position (9) and the second installation position (10) are semicircular holes.

5. The water cooling plate for the laser high-frequency power switch as claimed in claim 1, wherein: and a positioning plate (11) which is adaptive to the fins (3) is arranged in the flow channel (4).

6. The water cooling plate for the laser high-frequency power switch as claimed in claim 1, wherein: the runner (4) comprises a plurality of runner units (41) which are sequentially communicated, a bearing block (42) is arranged in the middle of each runner unit (41) along the width direction of the substrate (1), and power module mounting screw holes (43) are formed in the two sides of each bearing block (42) and each runner unit (41).