CN217428571U - Radiator and power module - Google Patents
Radiator and power module Download PDFInfo
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- CN217428571U CN217428571U CN202220798978.7U CN202220798978U CN217428571U CN 217428571 U CN217428571 U CN 217428571U CN 202220798978 U CN202220798978 U CN 202220798978U CN 217428571 U CN217428571 U CN 217428571U
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Abstract
The utility model discloses a radiator and power module, wherein, the radiator includes base plate, phase change medium and first fin, the base plate is inside to be formed with the flow chamber, the flow chamber is including evaporation chamber and the condensation chamber that is linked together, the piece that generates heat is located the outside of base plate and with the position that the evaporation chamber corresponds; the phase change medium is arranged in the flowing cavity and is used for taking away the heat released by the heating element; the first radiating fin is arranged on the outer side of the substrate and at a position corresponding to the condensation cavity, and is used for taking away heat in the condensation cavity. The technical proposal of the utility model improves the heat radiation performance of the radiator by adopting the mode of opening the flowing cavity inside the base plate and arranging the first radiating fin outside the base plate; the utility model discloses a radiator has that heat dispersion is strong, small and low-cost advantage.
Description
Technical Field
The utility model relates to an electrical equipment technical field, in particular to radiator and power module.
Background
At present, a photovoltaic inverter mostly adopts a shovel tooth radiator for heat dissipation. Most power devices in photovoltaic inversion adopt IGBT energy modules, however, IGBTs have the heat release characteristics of large heat productivity, concentrated heat generation and large heat flow density, and an existing common shovel tooth radiator is difficult to take away heat through a heat dissipation air duct formed by shovel tooth sheets, and can only improve the heat dissipation efficiency through improving the structural characteristics of the air duct or selecting a fan with large air volume and large air pressure, however, under some working conditions with large heat flow density, even if the air volume is increased or the air duct is improved, the heat dissipation efficiency is not good for. The phase change heat radiator is a good choice, but the traditional scheme is that a condenser is required to be externally hung on an evaporation cold plate to condense a phase change medium, so that the phase change heat radiator is large in size and high in manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a radiator that the cost of manufacture is low and the radiating efficiency is high.
In order to achieve the above object, the utility model provides a heat radiator, include:
the heat-generating device comprises a substrate, a heat-generating component and a heat-conducting component, wherein a flowing cavity is formed in the substrate and comprises an evaporation cavity and a condensation cavity which are communicated with each other, and the heat-generating component is arranged on the outer side of the substrate and corresponds to the evaporation cavity;
the phase change medium is arranged in the flowing cavity and used for taking away the heat released by the heating element;
the first radiating fin is arranged on the outer side of the substrate and at a position corresponding to the condensation cavity and used for taking away heat in the condensation cavity.
In one embodiment, the inner wall of the condensation chamber is provided with a plurality of second cooling fins, and the plurality of second cooling fins divide the condensation chamber into a plurality of flow channels.
In one embodiment, the first heat sink has a cavity therein, and the cavity is communicated with the evaporation cavity.
In an embodiment, a third heat sink is disposed at a position corresponding to the evaporation cavity on one side of the substrate, so as to take away heat in the evaporation cavity.
In one embodiment, the number of the first radiating fins is multiple, and the multiple first radiating fins are arranged in parallel at equal intervals;
and/or the number of the third radiating fins is multiple, and the third radiating fins are arranged in parallel at equal intervals.
In one embodiment, when the phase-change medium is located in the evaporation cavity, the liquid level height of the phase-change medium is not lower than the position height of the heat generating piece relative to the position of the condensation cavity.
In one embodiment, the evaporation cavity is provided with a capillary structure, and the capillary structure is used for sucking the liquid level of the phase-change medium to a height not lower than the position of the heat generating piece.
In an embodiment, the first heat sink is a toothed structure, and the first heat sink and the substrate are integrally formed.
In an embodiment, the first heat sink is a blown sheet structure, and the first heat sink is connected to the substrate by welding.
The utility model also provides a power module, including above-mentioned radiator.
The utility model discloses technical scheme has flowing chamber and is in through adopting to open in the base plate inside the base plate outside sets up the mode of first fin and has improved the heat dispersion of radiator. Firstly, the utility model discloses a radiator is through set up the flow chamber in the base plate and introduce the phase change medium, the phase change medium flows in the flow chamber, tentatively will generate heat the heat of a release by the evaporation chamber is taken into the condensation chamber, then further will through first fin the heat in the condensation chamber is taken away, in the condensation chamber return after the phase change medium condensation continue to with in the evaporation chamber heat in the evaporation chamber is taken away, thereby the realization will the heat of a release that generates heat is continuously discharged, in order to improve the work efficiency and the job stabilization nature of a generate heat. The utility model discloses a radiator has that heat dispersion is strong, small and low-cost advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heat sink according to an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of another embodiment of the heat sink of the present invention;
FIG. 4 is a schematic structural diagram of a heat sink according to another embodiment of the present invention;
FIG. 5 is a sectional view taken along line B-B of FIG. 4;
fig. 6 is a cross-sectional view taken along line C-C of fig. 4.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name(s) | |
| 100 | |
10 | The |
|
| 11 | |
30 | |
|
| 50 | |
51 | |
|
| 511 | |
513 | |
|
| 70 | |
| Flow passage | |
| 80 | |
90 | Heating element |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "a and/or B" as an example, including either the a aspect, or the B aspect, or both the a and B aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a radiator 100.
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, the heat sink 100 includes a substrate 50, a phase change medium 80, and first heat dissipation fins 10, a flow cavity 51 is formed inside the substrate 50, the flow cavity 51 includes an evaporation cavity 511 and a condensation cavity 513 that are communicated with each other, and the heat generating element 90 is disposed outside the substrate 50 and at a position corresponding to the evaporation cavity 511; the phase-change medium 80 is arranged in the flow cavity 51 and used for carrying away heat released by the heat generating member 90; the first heat sink 10 is disposed outside the substrate 50 and at a position corresponding to the condensation chamber 513, so as to take away heat in the condensation chamber 513.
More specifically, the substrate 50 is rectangular, the substrate 50 is vertically disposed, the flow chamber 51 extends upward from the lower end inside the substrate 50 to the upper end of the substrate 50, the evaporation chamber 511 is located below the condensation chamber 513, the first heat sink 10 is disposed at the rear side of the substrate 50 and perpendicular to the substrate 50, the first heat sink 10 is a rectangular sheet structure, a mounting position is disposed at the front side of the substrate 50 and corresponding to the evaporation chamber 511, and the heat generating member 90 is mounted at the mounting position. When the heating element 90 is not in operation, the phase-change medium 80 is in a liquid state, and the phase-change medium 80 is entirely located in the evaporation cavity 511; when the heat generating member 90 works, the heat generating member 90 transfers heat to the liquid phase change medium 80 in the evaporation chamber 511 through the substrate 50, the liquid phase change medium 80 absorbs the heat emitted by the heat generating member 90 and then becomes steam, the phase change medium 80 which becomes steam rises and enters the condensation chamber 513, because the temperature of the substrate 50 corresponding to the condensation chamber 513 is lower, and the first heat sink 10 absorbs and dissipates the heat in the condensation chamber 513 to the air outside the substrate 50 through the heat conduction effect, the phase change medium 80 in the condensation chamber 513 is condensed into liquid and falls into the evaporation chamber 511 under the gravity effect, the heat absorption and dissipation processes are cyclically generated, and the heat released by the heat generating member 90 is continuously dissipated.
The utility model discloses technical scheme has flowing chamber 51 and is in through adopting to open in base plate 50 the base plate 50 outside sets up the mode of first fin 10 and has improved the heat dispersion of radiator 100. Firstly, the utility model discloses a radiator 100 is through set up flow chamber 51 and introduce phase change medium 80 in base plate 50, phase change medium 80 flows in flow chamber 51, tentatively will the heat that generates heat 90 release is taken in by evaporation chamber 511 condensation chamber 513, then further with through first fin 10 the heat in condensation chamber 513 is taken away, in condensation chamber 513 return after the phase change medium 80 condenses return in the evaporation chamber 511 continue to take away the heat in the evaporation chamber 511 to the realization with the heat that generates heat 90 release is continuously discharged away, with the work efficiency and the job stabilization nature of the piece 90 that generate heat that improves. The utility model discloses a radiator 100 has the advantage that heat dispersion is strong, small and low-cost.
Referring to fig. 6, on the basis of the above embodiment, in another embodiment, a plurality of second cooling fins 70 are disposed on an inner wall of the condensation chamber 513, and the plurality of second cooling fins 70 divide the condensation chamber 513 into a plurality of flow channels 70 a. The second heat dissipation fins 70 may be fins, or the second heat dissipation fins 70 are formed by protruding bumps formed on the wall of the condensation chamber 513, and the inside of the condensation chamber 513 is divided into labyrinth-shaped flow channels 70a, so that the contact area between the phase change medium 80 and the condensation chamber 513 is increased, and the heat exchange efficiency between the substrate 50 and the phase change medium 80 is further improved. Similarly, the inner wall of the evaporation cavity 511 may also be provided with a plurality of second heat dissipation fins 70, so as to divide the evaporation cavity 511 into a plurality of labyrinth flow channels 70a, thereby increasing the heat exchange efficiency between the inner wall of the evaporation cavity 511 and the phase change medium 80, so that the substrate 50 can dissipate more heat released by the heat generating component 90 in the evaporation cavity 511.
Further, a third heat sink 30 is disposed at a position corresponding to the evaporation cavity 511 on one side of the substrate 50, the third heat sink 30 is perpendicular to the substrate 50 and has a rectangular sheet structure, and the third heat sink 30 is used for reducing the temperature in the evaporation cavity 511. Referring to fig. 4 and 5, in an embodiment, the third heat sink 30 is integrally formed with the first heat sink 10, and the third heat sink 30 is formed by extending the first heat sink 10 downward along a vertical direction. When the heating element 90 works, the third heat sink 30 takes away part of the heat in the evaporation cavity 511, the phase change medium 80 is evaporated by the residual heat in the evaporation cavity 511, and the phase change medium 80 can be rapidly condensed into a liquid state after entering the condensation cavity 513, and then enters the evaporation cavity 511 to continuously take away the heat in the evaporation cavity 511. The arrangement of the third heat dissipation fins 30 increases the heat dissipation rate of the heat sink 100, and the heat dissipation efficiency of the heat sink 100 is further improved.
Referring to fig. 3, further, a cavity 11 is formed inside the first heat sink 10, and the cavity 11 is communicated with the condensation chamber 513. The arrangement of the cavity 11 increases the contact area between the phase change medium 80 and the first heat sink 10, thereby improving the heat exchange efficiency between the phase change medium 80 and the first heat sink 10. Similarly, the third heat dissipation fin 30 is also provided with a cavity 11 therein to increase the heat conduction area of the third heat dissipation fin 30, thereby improving the heat dissipation efficiency of the heat sink 100.
It is understood that the number of the first heat dissipation fins 10 is plural, a plurality of the first heat dissipation fins 10 are arranged in parallel at equal intervals, the first heat dissipation fins 10 extend in a vertical direction, or the first heat dissipation fins 10 extend in a horizontal direction; when the first heat sink 10 extends in the vertical direction, the first heat sink 10 extends from the outer side of the substrate 50 corresponding to the top of the condensation chamber 513 to the outer side of the substrate 50 corresponding to the bottom of the condensation chamber 513; when the first heat sink 10 extends along the horizontal direction, the first heat sink 10 extends horizontally from the outer side of the substrate 50 corresponding to the left chamber wall of the condensation chamber 513 to the right side to the outer side of the substrate 50 corresponding to the right chamber wall of the condensation chamber 513; the above arrangement, on the one hand, makes the manufacturing process simple, and on the other hand, can increase the heat exchange area between the first heat sink 10 and the condensation chamber 513 as much as possible in the limited space outside the base plate 50. Similarly, the number of the third heat dissipation fins 30 is plural, the plural third heat dissipation fins 30 are arranged in parallel at equal intervals, and the third heat dissipation fins 30 extend in the vertical direction, or the third heat dissipation fins 30 extend in the horizontal direction.
In order to timely carry away the heat in the evaporation chamber 511 by the phase change medium 80, the liquid level of the phase change medium 80 is not lower than the position of the heat generating member 90 relative to the position of the condensation chamber 513. If the liquid level height of the phase change medium 80 is not lower than the position of the heating member 90, when the heating member 90 works, at least part of heat emitted by the heating member 90 directly enters the condensation chamber 513, so that the temperature in the condensation chamber 513 is increased, the phase change medium 80 cannot be discharged in time after entering the condensation chamber 513, the phase change medium 80 cannot be condensed, the phase change medium 80 in the condensation chamber 513 cannot enter the evaporation chamber 511 in time to continue to take away the heat in the evaporation chamber 511, and the heat released by the heating member 90 cannot be discharged in time, so that the working efficiency of the heating member 90 can be influenced.
In order to make the liquid level of the phase change medium 80 not lower than the position height of the heat generating member 90, the evaporation cavity 511 may be directly and completely filled with the phase change medium 80, or the phase change medium 80 partially fills the evaporation cavity 511, and a capillary structure is disposed in the evaporation cavity 511, and the capillary structure sucks a part of the liquid level height of the phase change medium 80 to a position height not lower than the position height of the heat generating member 90. The specific form of the capillary structure may be any one of the prior art, and is not limited herein, without departing from the inventive concept of the present application.
The structure of the first fin 10 has a variety of configurations. In one embodiment, the first heat sink 10 has a toothed structure, and the first heat sink 10 is integrally formed with the substrate 50; the first heat sink 10 is integrally formed with the substrate 50, which has the following advantages; the heat dissipation structure has the advantages of one-step forming, no need of splicing and processing, no risk of loosening and falling, maintenance of 100% of heat conductivity of the section, and realization of ultra-thin heat dissipation fins, ultra-small spacing and ultra-high multiple. In another embodiment, the first heat sink 10 is a blown sheet structure, and the first heat sink 10 and the substrate 50 are connected by welding. The blowing plate structure has the advantages of high heat conduction speed, high heat dissipation efficiency, high reliability, high cost performance, suitability for various narrow spaces and the like; the blow-up plate is lighter in weight, and can reduce the total weight of the radiator 100 to a considerable extent while greatly improving the heat dissipation effect.
The utility model discloses still provide a power module, this power module includes radiator 100, and above-mentioned embodiment is referred to this radiator 100's concrete structure, because this radiator 100 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A heat sink for dissipating heat from a heat generating member, comprising:
the heat-generating device comprises a substrate, a heat-generating component and a heat-generating component, wherein a flowing cavity is formed inside the substrate and comprises an evaporation cavity and a condensation cavity which are communicated with each other, and the heat-generating component is arranged on the outer side of the substrate and corresponds to the evaporation cavity;
the phase change medium is arranged in the flowing cavity and used for taking away the heat released by the heating element;
the first radiating fin is arranged on the outer side of the substrate and at a position corresponding to the condensation cavity and used for taking away heat in the condensation cavity.
2. The heat sink of claim 1, wherein the inner wall of the condensation chamber is provided with a plurality of second fins dividing the condensation chamber into a plurality of flow channels.
3. The heat sink of claim 2, wherein the first fin has a cavity therein, the cavity communicating with the evaporation chamber.
4. The heat sink of claim 1, wherein a third heat sink is disposed on a side of the substrate corresponding to the evaporation chamber for removing heat from the evaporation chamber.
5. The heat sink as claimed in claim 4, wherein the number of the first heat dissipating fins is plural, and the plural first heat dissipating fins are arranged in parallel at equal intervals;
and/or the third radiating fins are multiple in number and are arranged in parallel at equal intervals.
6. The heat sink of claim 1, wherein when the phase change medium is located in the evaporation chamber, a liquid level of the phase change medium is not lower than a position of the heat generating member with respect to a position of the condensation chamber.
7. The heat sink according to claim 6, wherein the evaporation chamber is provided with a capillary structure for drawing the liquid level of the phase-change medium to a height not lower than the position of the heat generating member.
8. The heat sink as claimed in any one of claims 1 to 7, wherein the first heat sink is a fin structure, and the first heat sink is integrally formed with the base plate.
9. The heat sink as claimed in any one of claims 1 to 7, wherein the first heat sink is of a blown sheet structure, and the first heat sink is connected to the base plate by welding.
10. A power module comprising a heat sink according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220798978.7U CN217428571U (en) | 2022-04-07 | 2022-04-07 | Radiator and power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220798978.7U CN217428571U (en) | 2022-04-07 | 2022-04-07 | Radiator and power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217428571U true CN217428571U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220798978.7U Active CN217428571U (en) | 2022-04-07 | 2022-04-07 | Radiator and power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217428571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115866972A (en) * | 2022-11-28 | 2023-03-28 | 深圳市英维克科技股份有限公司 | Radiating element and thermosiphon radiator |
-
2022
- 2022-04-07 CN CN202220798978.7U patent/CN217428571U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115866972A (en) * | 2022-11-28 | 2023-03-28 | 深圳市英维克科技股份有限公司 | Radiating element and thermosiphon radiator |
| WO2024113682A1 (en) * | 2022-11-28 | 2024-06-06 | 深圳市英维克科技股份有限公司 | Heat dissipation element and thermosiphon radiator |
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