CN110809384A

CN110809384A - Heat dissipation device and power equipment applying same

Info

Publication number: CN110809384A
Application number: CN201910947793.0A
Authority: CN
Inventors: 王叙夫; 雷仕建; 刘福红
Original assignee: Shenzhen Bronze Technologies Ltd
Current assignee: Shenzhen Bronze Technologies Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-02-18

Abstract

The invention discloses a heat dissipation device and power equipment applying the same, and discloses power equipment. The heat dissipation device comprises a first circulation port, a second circulation port and a heat dissipation passage. The heat dissipation passage comprises a first fluid channel and at least one second fluid channel, and the first fluid channel is communicated between the first circulation port and the second circulation port and used for dissipating heat of the first heat generation unit. One end of the second fluid channel is communicated with the first fluid channel, the other end of the second fluid channel is communicated with the first circulation port or the second circulation port, the plane of the second fluid channel is perpendicular to the plane of the first fluid channel, and the second fluid channel is used for dissipating heat of the second heating unit. Thus, the heat dissipation effect can be improved.

Description

Heat dissipation device and power equipment applying same

Technical Field

The invention relates to a heat dissipation device and electric equipment applying the same.

Background

With the high integration of electronic devices and the continuous improvement of processing and manufacturing technological means, the power density of equipment such as power electronic power converters and the like is higher and higher, and the requirement on liquid cooling type heat dissipation is higher and higher. The devices with large power consumption in the power electronic converter generally comprise an MOS (metal oxide semiconductor) tube, a rectifier diode, an IGBT (insulated gate bipolar transistor) module, a rectifier bridge module, a filter inductor, a transformer and the like.

However, when the power consumption device is small in size, it may be arranged on a heat dissipation plate with a flow passage to dissipate heat. However, when the power consumption device is large in size (such as a transformer), if the design of the power consumption device and the small-size power consumption device are used together for heat dissipation through the liquid cooling plate, the space of equipment is wasted, and the heat dissipation effect is not good.

Disclosure of Invention

In view of the above, it is desirable to provide a heat dissipation device and an electric power apparatus using the same, which can save the space of the apparatus and improve the heat dissipation effect.

The technical scheme provided by the invention for achieving the purpose is as follows:

a heat dissipation device for dissipating heat from a heat generating module provided with a first heat generating unit and a second heat generating unit having a volume larger than that of the first heat generating unit, the heat dissipation device including a first circulation port, a second circulation port, and a heat dissipation passage, wherein a coolant flows into the heat dissipation passage through the first circulation port and flows out through the second circulation port to dissipate heat from the heat generating module provided on the heat dissipation passage, the heat dissipation passage including:

the first fluid channel is communicated between the first circulation port and the second circulation port and used for dissipating heat of the first heat generation unit;

and one end of the second fluid channel is communicated with the first fluid channel, the other end of the second fluid channel is communicated with the first flow port or the second flow port, the plane of the second fluid channel is vertical to the plane of the first fluid channel, and the second fluid channel is used for dissipating heat of the second heating unit.

Furthermore, the second fluid channel is rectangular, the second fluid channel includes a top portion and a bottom portion opposite to each other, the second fluid channel is disposed on one side of the first fluid channel, and a through groove is formed in a direction opposite to the first fluid channel, the through groove is located between the top portion and the bottom portion and used for placing the second heat generating unit, and the second heat generating unit is in contact with the top portion and the bottom portion.

Further, a first branch is formed inside the top, a second branch is formed inside the bottom, one end of each of the first branch and the second branch is communicated with the first circulation port or the second circulation port, and the other end of each of the first branch and the second branch is communicated with the first fluid channel.

Furthermore, the number of the second fluid channels is two, and the two second fluid channels are respectively arranged on two sides of the first fluid channel and are communicated with the first circulation ports and the second circulation ports in a one-to-one correspondence manner.

Further, the first fluid channel is plate-shaped, the first fluid channel comprises two opposite mounting plates, two opposite side plates and two opposite support plates, the mounting plates, the side plates and the support plates are perpendicular to each other, the two mounting plates, the two side plates and the two support plates jointly enclose an accommodating cavity, the accommodating cavity is communicated with the first circulation port and the second circulation port, and one side, far away from the accommodating cavity, of the two mounting plates is used for mounting the first heat generating unit.

Furthermore, the first fluid channel further comprises a plurality of baffle pieces which are distributed on the mounting plate at intervals in the accommodating cavity, one end of each baffle piece is abutted against one side plate, openings are formed between the other end of each baffle piece and the other side plate at intervals, and the openings are alternately formed on two sides of the accommodating cavity so as to divide the accommodating cavity into the snake-shaped channels.

Further, the first fluid channel further comprises a plurality of flow distribution plates, and the flow distribution plates are arranged between every two adjacent baffle pieces at intervals.

Further, the first fluid channel and the second fluid channel are made of aluminum.

The utility model provides an electrical equipment, includes the module that generates heat and as above heat abstractor, the module that generates heat includes first heat generation unit and volume is greater than the second heat generation unit of first heat generation unit.

The heat dissipation device and the power equipment applying the heat dissipation device are used for dissipating heat of the first heat generation unit by arranging the first fluid channel in the heat dissipation passage. And a second fluid channel is arranged in the heat dissipation passage, one end of the second fluid channel is communicated with the first fluid channel, the other end of the second fluid channel is communicated with the first flow port or the second flow port, the plane of the second fluid channel is vertical to the plane of the first fluid channel, and the second fluid channel is used for dissipating heat of a second heating unit which is larger than the first heating unit in volume. Therefore, the equipment space is saved, and the heat dissipation effect is improved.

Drawings

Fig. 1 is a schematic diagram of a preferred embodiment of an electrical apparatus employing a heat dissipation device according to the present invention.

Fig. 2 is a schematic view of a preferred embodiment of the heat dissipation device in fig. 1.

Fig. 3 is a cross-sectional view of a preferred embodiment of the power device with a heat dissipation device of the present invention.

Fig. 4 is a perspective view of a preferred embodiment of the heat sink of fig. 1.

Fig. 5 is another cross-sectional view of a preferred embodiment of the power device with a heat dissipation device of the present invention.

Description of the main elements

Heat sink 100

Flow openings

10, 20

Heat dissipation path 30

Fluid passages 32, 34

Mounting plate 321

Side plate 322

Supporting plate 323

Receiving cavity 324

Baffle 325

Opening 326

Diverter plate 327

Top 341

Bottom 342

Through groove 343

Branches

344, 345

Heating module 200

Heating units

210, 220

Power equipment 300

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the present invention provides a power device 300. The power equipment 300 includes a heat dissipation device 100 and a heat generating module 200. The heat dissipation device 100 is used for dissipating heat of the heat generating module 200. The heating module 200 includes a heating unit 210 and a heating unit 220, the heating unit 210 is electrically connected to the heating unit 220, and the volume of the heating unit 220 is greater than that of the heating unit 210.

In this embodiment, the power equipment 300 is a vehicle-mounted fuel cell power converter, the heat generating unit 210 is a PCB provided with power devices such as MOS transistors, and the heat generating unit 220 is a transformer.

Referring to fig. 2, the heat dissipation device 100 includes a circulation port 10, a circulation port 20 and a heat dissipation passage 30, and two ends of the heat dissipation passage 30 are respectively communicated with the circulation port 10 and the circulation port 20. The heat dissipation path 30 is in contact with the heat generating module 200. In this way, the cooling liquid may flow into the heat dissipation passage 30 through the circulation port 10 to dissipate heat of the heat generating module 200, and be discharged through the circulation port 20. In this embodiment, the coolant may be water.

The heat dissipation channel 30 includes a fluid channel 32 and at least one fluid channel 34. The fluid channel 32 is connected between the circulation port 10 and the circulation port 20, and is used for dissipating heat from the heat generating unit 210. One end of the fluid channel 34 is communicated with the fluid channel 32, the other end of the fluid channel 34 is communicated with the circulation port 10 or the circulation port 20, and the plane of the fluid channel 34 is different from the plane of the fluid channel 32. In this embodiment, the plane of the fluid channel 34 is perpendicular to the plane of the fluid channel 32. The fluid channel 34 is used for dissipating heat of the heat generating unit 220. Thus, the first fluid channel 32 and the second fluid channel 34 are respectively arranged to perform liquid cooling heat dissipation on the heating unit 210 and the heating unit 220, so that the equipment space is saved, and the heat dissipation effect is improved.

The fluid channel 32 and the fluid channel 34 are both thermally conductive materials, and in this embodiment, the fluid channel 32 and the fluid channel 34 are both made of aluminum.

Referring to fig. 3 to 4, in the present embodiment, the fluid channel 32 is substantially plate-shaped, and the fluid channel 32 includes two opposite mounting plates 321, two opposite side plates 322, and two opposite support plates 323. The mounting plate 321, the side plate 322, and the support plate 323 are perpendicular to each other. The two mounting plates 321, the two side plates 322 and the two support plates 323 together define a receiving cavity 324, and the receiving cavity 324 is communicated with the communication port 10 and the communication port 20. The two mounting plates 321 are used for mounting the heat generating unit 210 at a side away from the receiving cavity 324.

The fluid passage 32 also includes a plurality of baffles 325. The length of each barrier 325 is less than the width of the receiving cavity 324. The blocking members 325 are spaced apart from the mounting plate 321 within the receiving cavity 324. One end of each baffle 325 is abutted against one of the side plates 322, and an opening 326 is formed between the other end of each baffle 325 and the other side plate 322. The openings 326 are alternately formed at both sides of the receiving cavity 324 to divide the receiving cavity 324 into a serpentine passage. In this way, the cooling liquid will flow along the serpentine channel in the receiving cavity 324, thereby increasing the heat dissipation effect of the fluid channel 32.

Further, the fluid channel 32 further includes a plurality of dividing plates 327, and the dividing plates 327 are spaced between each two adjacent baffle members 325 for guiding the cooling liquid to flow in the fluid channel 32, so as to further improve the heat dissipation effect of the fluid channel 32.

Referring also to fig. 5, the fluid channel 34 is substantially rectangular, and the fluid channel 34 includes a top portion 341 and a bottom portion 342 opposite to each other. The fluid channel 34 is disposed at one side of the fluid channel 32, and a through groove 343 is formed opposite to the fluid channel 32, the through groove 343 is located between the top 341 and the bottom 342 for placing the heat generating unit 220, and the heat generating unit 220 is in contact with the top 341 and the bottom 342.

Further, the top portion 341 is formed with a branch 344 on the inside thereof, and the bottom portion 342 is formed with a branch 345 on the inside thereof. One ends of the

branches

344 and 345 communicate with the flow port 10 or the flow port 20, and the other ends of the

branches

344 and 345 communicate with the fluid channel 32. Thus, the top 341 and the bottom 342 can transfer heat dissipated by the heat-generating unit 220 during operation to the branch 344 and the branch 345, respectively, and the cooling fluid flows through the branch 344 and the branch 345 to carry away the heat, thereby dissipating the heat of the heat-generating unit 220.

In the present embodiment, the number of the fluid passages 34 is two, and the two fluid passages 34 are respectively disposed on both sides of the fluid passage 32 and are in one-to-one correspondence with the

circulation ports

10 and 20. In this way, the cooling fluid can enter the fluid channel 32 directly through the flow port 10 or enter the fluid channel 32 after flowing into the corresponding fluid channel 34, and exit the flow port 20 directly after passing through the fluid channel 32 or exit the flow port 20 after entering another fluid channel 34.

The heat sink 100 is configured to dissipate heat of the heat generating unit 210 by providing the fluid channel 32 in the heat dissipating passage 30. By providing the fluid channel 34 in the heat dissipation passage 30, one end of the fluid channel 34 communicates with the fluid channel 32, the other end of the fluid channel 34 communicates with the circulation port 10 or the circulation port 20, the plane of the fluid channel 34 is perpendicular to the plane of the fluid channel 32, and the fluid channel 34 is used for dissipating heat of the heat generating unit 220 having a larger volume than the heat generating unit 210. Therefore, the equipment space is saved, and the heat dissipation effect is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a heat abstractor for the module that generates heat that is equipped with first heating unit and volume is greater than the second heating unit of first heating unit dispels the heat, heat abstractor includes first circulation mouth, second circulation mouth and heat dissipation route, and the coolant liquid passes through first circulation mouth flows in heat dissipation route, and pass through second circulation mouth flows out, in order to set up in heat dissipation route last module that generates heat dispels the heat, its characterized in that, heat dissipation route includes:

2. The heat dissipating device as claimed in claim 1, wherein the second fluid channel is rectangular and comprises a top and a bottom opposite to each other, the second fluid channel is disposed on one side of the first fluid channel, and a through groove is formed in a direction opposite to the first fluid channel, the through groove is located between the top and the bottom for placing the second heat generating unit, and the second heat generating unit is in contact with the top and the bottom.

3. The heat dissipating device of claim 2, wherein a first branch is formed inside the top portion, a second branch is formed inside the bottom portion, one end of the first branch and one end of the second branch are connected to the first flow port or the second flow port, and the other end of the first branch and the other end of the second branch are connected to the first fluid passage.

4. The heat dissipation device of claim 3, wherein the number of the second fluid channels is two, and the two second fluid channels are respectively disposed at two sides of the first fluid channel and are in one-to-one communication with the first circulation port and the second circulation port.

5. The heat dissipating device as claimed in claim 1, wherein the first fluid channel is plate-shaped, and the first fluid channel includes two opposite mounting plates, two opposite side plates, and two opposite support plates, the mounting plates, the side plates, and the support plates are perpendicular to each other, the two mounting plates, the two side plates, and the two support plates together define a receiving cavity, the receiving cavity is communicated with the first through-flow opening and the second through-flow opening, and a side of the two mounting plates away from the receiving cavity is used for mounting the first heat generating unit.

6. The heat dissipating device of claim 5, wherein the first fluid passage further comprises a plurality of blocking members spaced apart from each other in the receiving cavity and distributed on the mounting plate, one end of each blocking member abuts against one of the side plates, and openings are formed between the other end of each blocking member and the other side plate, and the openings are alternately formed on both sides of the receiving cavity to divide the receiving cavity into a serpentine passage.

7. The heat dissipating device of claim 6, wherein said first fluid passageway further comprises a plurality of flow distribution plates spaced between each adjacent two of said baffles.

8. The heat dissipating device of claim 1, wherein the first fluid channel and the second fluid channel are both aluminum.

9. An electrical apparatus comprising a heat generating module and the heat dissipating device of any one of claims 1 to 8, wherein the heat generating module comprises a first heat generating unit and a second heat generating unit having a larger volume than the first heat generating unit.