CN218939653U - Heat abstractor, power module and vehicle - Google Patents
Heat abstractor, power module and vehicle Download PDFInfo
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- CN218939653U CN218939653U CN202223162758.4U CN202223162758U CN218939653U CN 218939653 U CN218939653 U CN 218939653U CN 202223162758 U CN202223162758 U CN 202223162758U CN 218939653 U CN218939653 U CN 218939653U
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Abstract
The utility model discloses a heat dissipation device, a power module and a vehicle. The heat dissipating device comprises a shell and heat dissipating pin ribs, wherein a cooling flow passage suitable for circulating cooling medium is formed in the shell; the heat dissipation needle rib is arranged on the shell and protrudes towards the cooling flow channel, and the cross section of the heat dissipation needle rib is polygonal. According to the heat dissipating device, the cooling flow channel is defined by the shell and used for circulating cooling medium, the heat dissipating pin rib with the polygonal cross section is arranged and used for increasing the heat exchanging area of the heat dissipating device and the cooling medium, and meanwhile, the disturbance of the cooling medium is enhanced, so that the heat convection between the cooling medium and the heat dissipating pin rib is realized, the heat dissipating effect of the heat dissipating device is improved, and the reliability of the power module is further improved.
Description
Technical Field
The present utility model relates to the field of vehicles, and in particular, to a heat dissipating device, a power module, and a vehicle.
Background
The IGBT module is a power module with reduced saturation voltage and small driving power, and plays an important role in the new energy field, but because of the characteristics of high integration level and high power density, the internal chip temperature is higher, if the heat dissipation performance is poor, the reliability of the power module will be reduced, even the failure of the power module will be caused, and great loss is caused to the electrical equipment. At present, a direct cooling technology is generally adopted in a module heat dissipation and cooling method, namely, a diffusion plate and a heat dissipation needle rib of the module are integrally formed, and a cooling medium is used for realizing heat dissipation of the power module through a runner provided with the heat dissipation needle rib, so that the heat dissipation effect of the module is directly affected by the structure of the heat dissipation needle rib, and in the related technology, the cross section structure of the heat dissipation needle rib is circular, and the heat dissipation effect is general.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to propose a heat dissipating device for a power module and a vehicle. According to the heat dissipating device, the cooling flow channel is defined by the shell and used for circulating cooling medium, the heat dissipating pin rib with the polygonal cross section is arranged and used for increasing the heat exchanging area of the heat dissipating device and the cooling medium, and meanwhile, the disturbance of the cooling medium is enhanced, so that the heat convection of the cooling medium and the heat dissipating pin rib is realized, the heat dissipating effect of the heat dissipating device is improved, and the reliability of the power module is further improved.
The utility model also provides a power module comprising the cooling device.
The utility model further provides a vehicle comprising the power module.
The heat dissipating device comprises a shell and heat dissipating pin ribs, wherein a cooling flow passage suitable for circulating cooling medium is formed in the shell; the heat dissipation needle rib is arranged on the shell and protrudes towards the cooling flow channel, and the cross section of the heat dissipation needle rib is polygonal.
According to one embodiment of the utility model, a heat dissipation device for a power module is provided with a shell and a heat dissipation pin rib, a cooling flow passage is formed on the shell and used for circulating a cooling medium, and meanwhile, the shell can protect and fix the whole device; the heat dissipation needle rib is arranged on the shell and protrudes towards the cooling flow channel, the cross section of the heat dissipation needle rib is polygonal, the heat exchange area of the cooling medium and the heat dissipation device is increased, the cooling medium contacts with the heat dissipation needle rib and exchanges heat with the heat dissipation needle rib when flowing through the cooling flow channel, the cooling of the power module is realized, the heat dissipation effect of the heat dissipation device is improved, the power module is prevented from being invalid due to overhigh temperature, the reliability of the power module is improved, and the safety of a vehicle is further improved.
According to an embodiment of the present utility model, the heat dissipation pin ribs are configured in plural and spaced apart in the extending direction of the cooling flow passage.
According to an embodiment of the present utility model, the heat radiation pin ribs are configured in a plurality of rows in the extending direction of the cooling flow passage and a plurality of columns arranged at intervals in the width direction of the cooling flow passage, and among the adjacent two rows of the heat radiation pin ribs, the heat radiation pin rib on the upstream side is located between the adjacent two heat radiation pin ribs on the downstream side.
According to one embodiment of the present utility model, the side length of the heat dissipation pin rib is a, the distance between the centers of two adjacent rows of heat dissipation pin ribs is b, and the following conditions are satisfied: a/b is more than or equal to 0.83 and less than or equal to 0.85.
According to one embodiment of the utility model, a satisfies: a is more than or equal to 1.5mm and less than or equal to 1.8mm.
According to one embodiment of the present utility model, the distance between the centers of two adjacent columns of the heat dissipation pin ribs is c and satisfies: c is greater than or equal to b.
According to one embodiment of the utility model, c satisfies: c/b is less than or equal to 1.73 and less than or equal to 1.74.
According to one embodiment of the utility model, the cross section of the heat dissipation pin rib is in a regular quadrangle, and a connecting line between two side edges which are spaced from each other in the heat dissipation pin rib is parallel to the extending direction of the cooling flow channel.
The power module according to the present utility model is briefly described as follows.
The power module according to the present utility model is provided with the heat dissipating device in the above-described embodiment, and since the power module according to the present utility model is provided with the heat dissipating device in the above-described embodiment, a large amount of heat generated when the power module is operated will increase the temperature of the power module. At this time, the cooling medium in the heat dissipating device flows through the cooling flow channel to generate convection heat with the heat dissipating pin ribs with the quadrangular cross section, and the heat dissipating pin ribs with the polygonal cross section quicken the flow velocity of the cooling medium in the cooling flow channel, strengthen the disturbance of the cooling medium, strengthen the intensity of the convection heat exchange between the cooling medium and the heat dissipating pin ribs, improve the heat dissipating effect of the heat dissipating device and improve the reliability of the power module.
The vehicle according to the present utility model is briefly described below.
The vehicle according to the present utility model is provided with the power module of the above embodiment, and since the vehicle according to the present utility model is provided with the power module of the above embodiment, a large amount of heat is generated by the power module and the temperature of the power module rises during the running of the vehicle. At this time, the cooling medium in the heat dissipating device flows through the cooling flow channel to generate convection heat with the heat dissipating pin ribs with the quadrangular cross section, and the heat dissipating pin ribs with the polygonal cross section quicken the flow velocity of the cooling medium in the cooling flow channel, strengthen the disturbance of the cooling medium, strengthen the intensity of the convection heat exchange between the cooling medium and the heat dissipating pin ribs, improve the heat dissipating effect of the heat dissipating device, improve the reliability of the power module and further improve the safety of the vehicle.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a top view of an embodiment according to the present utility model.
Reference numerals:
a heat dissipating device 1;
a housing 11;
and heat dissipation pin ribs 12.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
The IGBT module is a power module with reduced saturation voltage and small driving power, and plays an important role in the new energy field, but because of the characteristics of high integration level and high power density, the internal chip temperature is higher, if the heat dissipation performance is poor, the reliability of the power module will be reduced, even the failure of the power module will be caused, and great loss is caused to the electrical equipment. At present, a direct cooling technology is generally adopted in a module heat dissipation and cooling method, namely, a diffusion plate of the module and a heat dissipation needle rib 12 are integrally formed, and a cooling medium is used for realizing heat dissipation of a power module through a flow channel provided with the heat dissipation needle rib 12, so that the heat dissipation effect of the module is directly affected by the structure of the heat dissipation needle rib 12, and in the related technology, the cross section structure of the heat dissipation needle rib 12 is circular, and the heat dissipation effect is general.
A heat sink 1 for a power module according to an embodiment of the present utility model is described below with reference to fig. 1.
The heat dissipating device 1 for a power module according to the present utility model includes a housing 11 and heat dissipating pin ribs 12, the housing 11 having a cooling flow passage formed therein adapted to circulate a cooling medium; the heat radiation pin rib 12 is provided on the housing 11 and protrudes inward toward the cooling flow passage, and the cross section of the heat radiation pin rib 12 is configured in a polygonal shape.
According to one embodiment of the present utility model, the heat dissipating device 1 for a power module is provided with a housing 11 and heat dissipating pin ribs 12, a cooling flow passage is formed on the housing 11 for circulating a cooling medium, and at the same time, the housing 11 can protect and fix the whole device; the heat dissipation needle rib 12 is arranged on the shell 11 and protrudes towards the inside of the cooling flow channel, the cross section of the heat dissipation needle rib 12 is polygonal, the heat exchange area of the cooling medium and the heat dissipation device 1 is increased, the cooling medium contacts with the heat dissipation needle rib 12 and exchanges heat with the heat dissipation needle rib 12 when flowing through the cooling flow channel, the cooling of the power module is realized, the heat dissipation effect of the heat dissipation device 1 is improved, the power module is prevented from being invalid due to overhigh temperature, the reliability of the power module is improved, and the safety of a vehicle is further improved.
According to one embodiment of the present utility model, the heat dissipation pin ribs 12 are configured in plural and spaced apart in the extending direction of the cooling flow passage. Specifically, the heat dissipation pin ribs 12 are configured in a plurality, and the plurality of heat dissipation pin ribs 12 are arranged on the cooling flow channel at intervals, and gaps are reserved among the heat dissipation pin ribs 12 so as to facilitate the cooling medium to flow through, so that the cooling medium contacts with the plurality of heat dissipation pin ribs 12 and exchanges heat, the heat exchange area of the cooling medium and the pin ribs is increased by the plurality of heat exchange pin ribs, and the heat dissipation of the heat dissipation device 1 is improved.
According to one embodiment of the present utility model, the heat radiation pin ribs 12 are configured in a plurality of rows in the direction in which the cooling flow passage extends and a plurality of columns arranged at intervals in the cooling flow passage width direction, and among the adjacent two rows of heat radiation pin ribs 12, the upstream heat radiation pin rib 12 is located between the downstream adjacent two heat radiation pin ribs 12. Specifically, in a certain manner, in some examples, the plurality of heat dissipation pin ribs 12 are arranged on the cooling flow channel in a certain manner, in the two adjacent rows/columns of heat dissipation pin ribs 12, any one pin rib in one row/column of heat dissipation pin ribs 12 is arranged between any two adjacent pin ribs in the other row/column of heat dissipation pin ribs 12, when the cooling medium flows through the cooling flow channel, the cooling medium can have the same contact area with each heat dissipation pin rib 12, and the arrangement manner of the plurality of rows of heat dissipation pin ribs 12 can play a certain flow blocking effect on the cooling medium, so that the contact time of the cooling medium and the heat dissipation pin ribs 12 is increased, the heat exchange effect of the cooling medium and the heat dissipation pin ribs 12 is improved, the heat dissipation performance of the heat dissipation device 1 is improved, and the reliability of the power module is further improved.
According to one embodiment of the present utility model, the side length of the heat dissipation pin ribs 12 is a, the distance between the centers of two adjacent rows of heat dissipation pin ribs 12 is b, and 0.83 < a/b < 0.85 is satisfied. Specifically, the heat dissipation pin rib 12 is disposed within the above range, and compared with the cylindrical structure of the heat dissipation pin rib 12, the present embodiment can improve the heat dissipation effect of the heat dissipation pin rib 12, and at the same time, the cooling medium can have sufficient space in the cooling flow channel to contact with the heat dissipation pin rib 12 for heat exchange, so that the heat dissipation of the heat dissipation device 1 is improved.
According to one embodiment of the utility model, a satisfies 1.5 mm.ltoreq.a.ltoreq.1.8 mm. Specifically, the heat dissipation pin rib 12 is disposed within the above range, and compared with the pin rib having a cylindrical structure, the present embodiment can improve the heat dissipation effect of the heat dissipation pin rib 12, and at the same time, the contact area between the cooling medium and the heat dissipation pin rib 12 is increased when the cooling medium cools the flow passage, so that the heat dissipation effect of the heat dissipation device 1 is improved.
According to one embodiment of the utility model, the distance between the centers of two adjacent rows of heat dissipation pin ribs 12 is c and c is equal to or greater than b. Specifically, the heat dissipation pin rib 12 is disposed within the above range, and compared with the pin rib having a cylindrical structure, the present embodiment can improve the heat dissipation effect of the heat dissipation pin rib 12, and at the same time, the cooling medium can have sufficient space in the cooling flow channel to contact with the heat dissipation pin rib 12 for heat exchange, so that the heat dissipation performance of the heat dissipation device 1 is improved.
According to one embodiment of the utility model, c satisfies 1.73.ltoreq.c/b.ltoreq.1.74. The heat dissipation pin rib 12 is arranged in the above range, and compared with the cylindrical structure of the heat dissipation pin rib 12, the heat dissipation effect of the heat dissipation pin rib 12 can be improved, meanwhile, the cooling medium can have sufficient space in the cooling flow channel to be in contact with the heat dissipation pin rib 12 for heat exchange, so that the heat dissipation performance of the heat dissipation device 1 is improved, and the heat dissipation effect of the power module is improved.
According to one embodiment of the present utility model, the cross section of the heat dissipation pin rib 12 is configured as a regular quadrangle, and the connection line between two side edges spaced apart from each other in the heat dissipation pin rib 12 is parallel to the extending direction of the cooling flow channel. Specifically, the cross section of the heat dissipation pin rib 12 is configured as a regular quadrangle, a connecting line between two side edges spaced from each other in the heat dissipation pin rib 12 is parallel to the extending direction of the cooling flow channel, that is, one diagonal line of the regular quadrangle is parallel to the extending direction of the cooling flow channel, when the cooling medium flows through the cooling flow channel, the cooling medium can fully contact with each side surface of the heat dissipation pin rib 12, so that the heat exchange area of the heat dissipation pin rib 12 is increased, and the heat dissipation performance of the heat dissipation device 1 is improved.
The power module according to the present utility model is briefly described as follows.
The power module according to the present utility model is provided with the heat dissipating device 1 of the above-described embodiment, and since the power module according to the present utility model is provided with the heat dissipating device 1 of the above-described embodiment, a large amount of heat generated when the power module operates will increase the temperature of the power module. At this time, the cooling medium in the heat dissipating device 1 flows through the cooling flow channel to generate convection heat with the heat dissipating pin ribs 12 with the quadrangular cross section, and the heat dissipating pin ribs 12 with the polygonal cross section quicken the flow velocity of the cooling medium in the cooling flow channel, strengthen the disturbance of the cooling medium, strengthen the degree of convection heat exchange between the cooling medium and the heat dissipating pin ribs 12, improve the heat dissipating effect of the heat dissipating device 1 and improve the reliability of the power module.
The vehicle according to the present utility model is briefly described below.
The vehicle according to the present utility model is provided with the power module of the above embodiment, and since the vehicle according to the present utility model is provided with the power module of the above embodiment, a large amount of heat is generated by the power module and the temperature of the power module rises during the running of the vehicle. At this time, the cooling medium in the heat dissipating device 1 flows through the cooling flow channel to generate convection heat with the heat dissipating pin ribs 12 with the quadrangular cross section, and the heat dissipating pin ribs 12 with the polygonal cross section quicken the flow velocity of the cooling medium in the cooling flow channel, strengthen the disturbance of the cooling medium, strengthen the intensity of the convection heat exchange between the cooling medium and the heat dissipating pin ribs 12, improve the heat dissipating effect of the heat dissipating device 1, improve the reliability of the power module, and further improve the safety of the vehicle.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.
In the description of the present utility model, "plurality" means two or more.
In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
5. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A heat sink for a power module, comprising:
a housing in which a cooling flow passage adapted to circulate a cooling medium is formed;
the cooling pin ribs are arranged on the shell and protrude towards the cooling flow channel, and the cross section of each cooling pin rib is polygonal.
2. The heat dissipating device for a power module according to claim 1, wherein the heat dissipating pin ribs are configured in plural and spaced apart in an extending direction of the cooling flow passage.
3. The heat dissipating device for a power module according to claim 2, wherein the heat dissipating pin ribs are configured in a plurality of rows in the direction in which the cooling flow passage extends and a plurality of columns arranged at intervals in the width direction of the cooling flow passage, and the heat dissipating pin rib of an adjacent two rows is located between the adjacent two heat dissipating pin ribs of an upstream row.
4. A heat dissipating device for a power module according to claim 3, wherein the heat dissipating pin ribs have a side length of a, and the distance between centers of two adjacent rows of the heat dissipating pin ribs is b and satisfies: a/b is more than or equal to 0.83 and less than or equal to 0.85.
5. The heat sink for a power module of claim 4, wherein a satisfies: a is more than or equal to 1.5mm and less than or equal to 1.8mm.
6. The heat dissipating device for a power module of claim 4 wherein the distance between centers of two adjacent columns of said heat dissipating pin ribs is c and satisfies: c is greater than or equal to b.
7. The heat sink for a power module of claim 6, wherein c satisfies: c/b is less than or equal to 1.73 and less than or equal to 1.74.
8. The heat dissipating device of any one of claims 1 to 7, wherein the cross section of the heat dissipating pin rib is configured as a regular quadrangle, and a line connecting two spaced side edges of the heat dissipating pin rib is parallel to the extending direction of the cooling flow passage.
9. A power module comprising a heat sink according to any one of claims 1-8.
10. A vehicle comprising the power module of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223162758.4U CN218939653U (en) | 2022-11-25 | 2022-11-25 | Heat abstractor, power module and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223162758.4U CN218939653U (en) | 2022-11-25 | 2022-11-25 | Heat abstractor, power module and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218939653U true CN218939653U (en) | 2023-04-28 |
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ID=86087733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223162758.4U Active CN218939653U (en) | 2022-11-25 | 2022-11-25 | Heat abstractor, power module and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218939653U (en) |
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2022
- 2022-11-25 CN CN202223162758.4U patent/CN218939653U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 588 Shuguang Road, Longxing Town, Yubei District, Chongqing, 401135 Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |