CN221080000U - Heat radiation structure for three-phase full-bridge power module - Google Patents
Heat radiation structure for three-phase full-bridge power module Download PDFInfo
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- CN221080000U CN221080000U CN202322591008.7U CN202322591008U CN221080000U CN 221080000 U CN221080000 U CN 221080000U CN 202322591008 U CN202322591008 U CN 202322591008U CN 221080000 U CN221080000 U CN 221080000U
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- heat dissipation
- fins
- sealing ring
- base plate
- shell
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- 230000005855 radiation Effects 0.000 title description 5
- 230000017525 heat dissipation Effects 0.000 claims abstract description 56
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 12
- 238000005242 forging Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model relates to the technical field of heat exchangers, in particular to a heat dissipation structure for a three-phase full-bridge power module, which comprises a shell, fins, a sealing ring and a substrate, wherein the fins are arranged on the shell; the middle part of the shell is provided with a heat dissipation groove for placing fins; the outer ring of the shell, which is positioned in the heat dissipation groove, is provided with a sealing ring groove; the sealing ring is placed in the sealing ring groove; the front surfaces of the fins are provided with a plurality of first wavy heat dissipation channels at intervals; a plurality of second wavy heat dissipation channels are arranged on the back surface of the fin at intervals; the fins are fixed at the bottom of the base plate; the base plate covers the shell and the fins are placed in the heat dissipation grooves, so that the sealing ring is sealed between the base plate and the shell. The utility model has the advantages that the substrate and the fins are respectively produced, the structural strength is ensured, the original heat exchange core pin-fin structure is changed into the wavy-fin structure of the wavy fin, the structural density is lower, the pressure drop of the system is smaller, and the heat exchange efficiency is higher.
Description
Technical Field
The utility model relates to the technical field of heat exchangers, in particular to a heat dissipation structure for a three-phase full-bridge power module.
Background
In the existing three-phase full-bridge power module heat exchanger (shown in fig. 5), three half-bridge power modules are fixed above a heat exchanger substrate, and the components of the heat exchanger comprise a shell 1, a sealing ring 3 and a substrate 4, wherein the substrate 4 is formed by adopting a forging process, and a heat exchange core pin-fin and the substrate 4 are integrally formed. The heat exchanger of this construction has the disadvantages: 1) The base plate 4 is formed by adopting a forging process, the flatness and the roughness are poor, the sealing area of the base plate 4 and the sealing ring 3 and the connecting surface of the base plate 4 and the half-bridge power module are required to be machined independently, and the flatness and the roughness required by sealing and sintering are ensured; 2) The heat exchange core pin-fin and the base plate 4 are integrally formed, so that the heat exchange core pin-fin and the base plate 4 are required to be made of the same material (copper), and the structural strength is poor; 3) The pin-fin structure has low heat exchange efficiency, and the pin-fin structure has higher density and higher system pressure drop under the condition of ensuring the same heat exchange quantity.
Disclosure of utility model
The utility model aims to solve the technical problems that the existing heat-dissipating structure substrate and the pin-fin structure are integrally formed, the structural strength is poor, and the heat exchange efficiency of the pin-fin structure is low.
The utility model aims at realizing the following technical scheme:
A heat radiation structure for a three-phase full-bridge power module comprises a shell, fins, a sealing ring and a base plate; a heat dissipation groove for placing fins is formed in the middle of the shell; the outer ring of the shell, which is positioned in the heat dissipation groove, is provided with a sealing ring groove; the sealing ring is placed in the sealing ring groove; the front surfaces of the fins are provided with a plurality of first wavy heat dissipation channels with upward openings at intervals; the back surfaces of the fins are provided with a plurality of second wavy heat dissipation channels with downward openings at intervals; the second wavy heat dissipation channels are positioned between two adjacent first wavy heat dissipation channels, and the fins are fixed at the bottom of the substrate; the base plate is fixedly covered on the shell, the fins are placed in the radiating grooves, and the sealing ring is sealed between the base plate and the shell. This heat radiation structure is through producing base plate and fin respectively, ensures structural strength, will originally heat exchange core pin-fin structure turn into wavy-fin's wave fin of structure simultaneously, is convenient for better dispel the heat through first wave heat dissipation channel and second wave heat dissipation channel, and under the prerequisite of guaranteeing the same heat exchange volume, structural density is lower for pin-fin structure, therefore the system pressure drop is less to heat exchange efficiency is higher than pin-fin structure.
Preferably, the fin has a wavy shape in the longitudinal direction and a wavy shape in the width direction. The heat exchange efficiency is further improved through the wavy fin structure.
Preferably, the fins are fixed at the bottom of the base plate by brazing. The fins and the base plate are respectively processed and molded, so that the base plate and the fins can be made of different materials on the premise of ensuring the heat exchange requirement, and the structural strength is further ensured.
Preferably, first arc convex blocks are arranged at intervals in the circumferential direction of the inner ring of the sealing ring, and the outer wall of each first arc convex block abuts against the inner wall of the sealing ring groove; the outer ring of the sealing ring is circumferentially provided with second arc convex blocks in a spaced arrangement, and the outer wall of the second arc convex blocks is propped against the outer side wall of the sealing ring groove. The first arc convex block and the second arc convex block on the sealing ring can be fully contacted with the sealing ring groove, so that the sealing effect is further improved.
Preferably, the first arc-shaped bump and the second arc-shaped bump are horizontally aligned, and the first arc-shaped bump and the second arc-shaped bump are combined to form a circle. The sealing ring is further convenient to prop against the sealing ring groove through the circular structure, so that the sealing effect is further improved.
Preferably, the base plate is fixed to the housing by a plurality of bolts, and the plurality of bolts are arranged at intervals in the circumferential direction on the outer periphery of the base plate. Make things convenient for dismouting between base plate and the casing through the bolt, further promote the connection fastness simultaneously.
Preferably, the fin and the base plate are respectively formed by a stamping process. Compared with a forging process, the stamping process does not need the process steps of melting, pouring and the like, the manufacturing process is simpler, the cost is lower, the flatness and the roughness are better, and the requirements of sealing and sintering can be met without additional machining.
Preferably, the fins are made of stainless steel materials; the substrate is made of copper. Through the structural combination, the structural strength is better.
Preferably, two sides of the heat dissipation groove are respectively provided with an air inlet channel and an air outlet channel; an air inlet pipe communicated with the air inlet channel is arranged at the air inlet end of the shell; the air outlet end of the shell is provided with an air outlet pipe communicated with the air outlet channel.
In summary, the heat dissipation structure has the advantages that the original heat exchange core pin-fin structure is changed into the wavy fins of the wavy-fin structure, better heat dissipation is facilitated through the first wavy heat dissipation channel and the second wavy heat dissipation channel, and on the premise of guaranteeing the same heat exchange quantity, the structure density is lower than that of the pin-fin structure, so that the system pressure drop is smaller, and the heat exchange efficiency is higher than that of the pin-fin structure; and the fins and the base plate are respectively processed and formed by adopting a stamping process, so that the flatness and the roughness are good, the requirements of sealing and sintering can be met without additional machining, meanwhile, the fins and the base plate can be made of different materials, for example, the base plate is made of copper, the fins are made of stainless steel, and the combined structure is better in strength.
Drawings
Fig. 1 is a schematic structural diagram of a heat dissipation structure for a three-phase full-bridge power module according to the present utility model.
Fig. 2 is an exploded schematic view of the heat dissipating structure for a three-phase full bridge power module of the present utility model.
Fig. 3 is a schematic view of the structure of the fin according to the present utility model.
Fig. 4 is a schematic structural view of a seal ring in the present utility model.
Fig. 5 is a schematic structural diagram of a conventional heat dissipation structure.
Wherein: 1. a housing; 11. a heat sink; 12. a seal ring groove; 13. an air intake passage; 14. an air outlet channel; 2. a fin; 21. a first wavy heat dissipation channel; 22. a second wavy heat dissipation channel; 3. A seal ring; 31. a first arc bump; 32. a second arc bump; 4. a substrate; 5. a bolt; 6. an air inlet pipe; 7. and an air outlet pipe.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
As shown in fig. 1 to 4, a heat dissipation structure for a three-phase full-bridge power module includes a housing 1, fins 2, a seal ring 3, and a base plate 4; the middle part of the shell 1 is provided with a heat dissipation groove 11 for placing the fins 2; the outer ring of the shell 1, which is positioned in the heat dissipation groove 11, is provided with a sealing ring groove 12; the sealing ring 3 is placed in the sealing ring groove 12; the fin 2 adopts wavy-fin structure, and the front surface of the fin 2 is provided with a plurality of first wavy heat dissipation channels 21 with upward openings at intervals; the back surfaces of the fins 2 are provided with a plurality of second wavy heat dissipation channels 22 with downward openings at intervals; and the second wavy heat dissipation channels 22 are positioned between two adjacent first wavy heat dissipation channels 21, the length direction of the fins 2 is wavy, and the width direction of the fins 2 is wavy. The heat exchange efficiency is further improved through the wavy fin 2 structure. The fins 2 are fixed at the bottom of the base plate 4; the base plate 4 is fixedly covered on the housing 1, and the fins 2 are placed in the heat dissipation grooves 11, and the sealing ring 3 is sealed between the base plate 4 and the housing 1. This heat radiation structure is through producing base plate 4 and fin 2 respectively, replaces original integrated into one piece, ensures structural strength, changes the wave fin 2 of wavy-fin structure into original heat exchange core pin-fin structure simultaneously, is convenient for better dispel the heat through first wave heat dissipation channel 21 and second wave heat dissipation channel 22, and under the prerequisite of guaranteeing the same heat exchange volume, structural density is lower for pin-fin structure, therefore the system pressure drop is less to heat exchange efficiency is higher than pin-fin structure.
As shown in fig. 1 to 4, the fin 2 and the base plate 4 are respectively formed by a stamping process. Compared with a forging process, the stamping process does not need the process steps of melting, pouring and the like, the manufacturing process is simpler, the cost is lower, the flatness and the roughness are better, and the requirements of sealing and sintering can be met without additional machining. The fins 2 are made of stainless steel materials; the substrate 4 is made of copper. Through the structural combination, the structural strength is better. The fins 2 are fixed to the bottom of the base plate 4 by brazing. By respectively processing and forming the fins 2 and the base plate 4, the base plate 4 and the fins 2 can be made of different materials on the premise of ensuring the heat exchange requirement, and the structural strength is further ensured.
As shown in fig. 4, first arc protrusions 31 are circumferentially arranged at intervals on the inner ring of the sealing ring 3, and the outer wall of each first arc protrusion 31 abuts against the inner wall of the sealing ring groove 12; the outer ring of the sealing ring 3 is circumferentially provided with second arc-shaped protruding blocks 32 in a spaced arrangement, and the outer wall of the second arc-shaped protruding blocks 32 is propped against the outer side wall of the sealing ring groove 12. The first arc convex block 31 and the second arc convex block 32 on the sealing ring 3 can be fully contacted with the sealing ring groove 12, so that the sealing effect is further improved. The first arc-shaped protruding block 31 and the second arc-shaped protruding block 32 are horizontally aligned, and the first arc-shaped protruding block 31 and the second arc-shaped protruding block 32 are combined to form a circle. The sealing ring 3 is further convenient to prop against the sealing ring groove 12 through the circular structure, so that the sealing effect is further improved.
As shown in fig. 1 and 2, the base plate 4 is fixed to the housing 1 by a plurality of bolts 5, and the plurality of bolts 5 are arranged at intervals in the circumferential direction on the outer periphery of the base plate 4. Make things convenient for dismouting between base plate 4 and the casing 1 through bolt 5, further promote the connection fastness simultaneously. The two sides of the heat dissipation groove 11 are respectively provided with an air inlet channel 13 and an air outlet channel 14; the air inlet end of the shell 1 is provided with an air inlet pipe 6 communicated with an air inlet channel 13; the air outlet end of the shell 1 is provided with an air outlet pipe 7 communicated with an air outlet channel 14.
In summary, the heat dissipation structure has the advantages that the substrate 4 and the fins 2 are respectively processed and formed by adopting the stamping process, and compared with the forging process adopted in the existing production process, the stamping process does not need the process steps of melting, pouring and the like, the manufacturing process is simpler, the cost is lower, the flatness and the roughness are better, and the requirements of sealing and sintering can be met without additional machining; meanwhile, on the premise of guaranteeing heat exchange requirements, different materials can be adopted for the base plate 4 and the fins 2, the materials are more flexible and changeable in selection, for example, copper is adopted for the base plate 4, stainless steel is adopted for the fins 2, the structural strength is better, most importantly, the original heat exchange core pin-fin structure is changed into the wavy fins 2 of wavy-fin structure, better heat dissipation is facilitated through the first wavy heat dissipation channel 21 and the second wavy heat dissipation channel 22, and on the premise of guaranteeing the same heat exchange quantity, the structural density is lower relative to the pin-fin structure, so that the system pressure drop is smaller, and the heat exchange efficiency is higher than that of the pin-fin structure.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.
Claims (9)
1. The heat dissipation structure for the three-phase full-bridge power module is characterized by comprising a shell (1), fins (2), a sealing ring (3) and a base plate (4); a heat dissipation groove (11) for placing the fins (2) is formed in the middle of the shell (1); the outer ring of the shell (1) positioned on the heat dissipation groove (11) is provided with a sealing ring groove (12); the sealing ring (3) is placed in the sealing ring groove (12); the front surfaces of the fins (2) are provided with a plurality of first wavy heat dissipation channels (21) with upward openings at intervals; the back surfaces of the fins (2) are provided with a plurality of second wavy heat dissipation channels (22) with downward openings at intervals; the second wavy heat dissipation channels (22) are positioned between two adjacent first wavy heat dissipation channels (21), and the fins (2) are fixed at the bottom of the base plate (4); the base plate (4) is fixedly covered on the shell (1), the fins (2) are placed in the heat dissipation grooves (11), and meanwhile the sealing ring (3) is sealed between the base plate (4) and the shell (1).
2. The heat dissipation structure for a three-phase full-bridge power module according to claim 1, wherein the fin (2) has a wavy shape in a length direction and the fin (2) has a wavy shape in a width direction.
3. The heat dissipation structure for a three-phase full-bridge power module according to claim 1, wherein the fins (2) are fixed to the bottom of the base plate (4) by means of soldering.
4. The heat dissipation structure for the three-phase full-bridge power module according to claim 1, wherein first arc protrusions (31) are circumferentially arranged at intervals on the inner ring of the sealing ring (3), and the outer wall of the first arc protrusions (31) abuts against the inner wall of the sealing ring groove (12); the outer ring of the sealing ring (3) is circumferentially provided with second arc convex blocks (32) at intervals, and the outer wall of each second arc convex block (32) is propped against the outer side wall of the sealing ring groove (12).
5. The heat dissipation structure for a three-phase full-bridge power module according to claim 4, wherein the first arc protrusion (31) and the second arc protrusion (32) are disposed in horizontal alignment, and the first arc protrusion (31) and the second arc protrusion (32) are combined to form a circle.
6. The heat dissipation structure for a three-phase full-bridge power module according to claim 1, wherein the base plate (4) is fixed to the housing (1) by a plurality of bolts (5), and the plurality of bolts (5) are arranged on the outer periphery of the base plate (4) at circumferential intervals.
7. The heat dissipation structure for a three-phase full-bridge power module according to claim 1, wherein the fins (2) and the base plate (4) are respectively formed by a stamping process.
8. The heat dissipation structure for a three-phase full-bridge power module according to claim 1 or 7, characterized in that the fins (2) are made of stainless steel material; the base plate (4) is made of copper material.
9. The heat dissipation structure for a three-phase full-bridge power module according to claim 1, wherein both sides of the heat dissipation groove (11) are respectively provided with an air inlet channel (13) and an air outlet channel (14); an air inlet pipe (6) communicated with an air inlet channel (13) is arranged at the air inlet end of the shell (1); the air outlet end of the shell (1) is provided with an air outlet pipe (7) communicated with the air outlet channel (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322591008.7U CN221080000U (en) | 2023-09-22 | 2023-09-22 | Heat radiation structure for three-phase full-bridge power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322591008.7U CN221080000U (en) | 2023-09-22 | 2023-09-22 | Heat radiation structure for three-phase full-bridge power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221080000U true CN221080000U (en) | 2024-06-04 |
Family
ID=91253161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322591008.7U Active CN221080000U (en) | 2023-09-22 | 2023-09-22 | Heat radiation structure for three-phase full-bridge power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221080000U (en) |
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2023
- 2023-09-22 CN CN202322591008.7U patent/CN221080000U/en active Active
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