WO2023044924A1 - Method and apparatus for determining geometric structure of radiator fin, and storage medium - Google Patents

Abstract

Disclosed in embodiments of the present invention are a method and apparatus for determining the geometric structure of a radiator fin, and a storage medium. The method comprises: determining the cross section of a fin; determining a guide curve equation suitable for guiding fluid flow, the guide curve equation comprising a first adjustable coefficient; and sweeping the cross section along a guide curve adjusted according to the first adjustable coefficient and determined according to the guide curve equation, so as to determine the geometric structure of the fin. According to the embodiments of the present invention, a design space is expanded, and computing resources are saved. In the embodiments of the present invention, the manufacturing process is also considered, and the manufacturability of design is improved.

Description

Method, device and storage medium for determining geometric structure of radiator fins technical field

The invention relates to the technical field of radiators, in particular to a method, a device and a storage medium for determining the geometric structure of radiator fins.

Background technique

Finned radiator is a heat exchange device widely used in gas and liquid heat exchangers. According to the structure of fins (pin), fin radiators can include finned fins, serial fins, soldered fins, rolled fins, and so on.

In the traditional radiator fin design process, only the cross-sectional dimension parameters of the fin can be optimized. Fig. 1 is a schematic diagram of determining the geometric structure of radiator fins in the prior art. In FIG. 1 , a trapezoidal cross-section 10 is swept along parallel lines 11 to obtain parallel plate fins 12 . However, usually only a small number of parameters such as the top width, bottom width and height of the trapezoidal cross-section 10 can be optimally adjusted. Due to the limited objects that can be optimized, this design method is difficult to meet the heat dissipation requirements.

Contents of the invention

Embodiments of the present invention provide a method, device, and computer-readable storage medium for determining the geometric structure of radiator fins.

A method of determining the geometry of a heat sink fin comprising:

Determine the cross-section of the fin;

determining a guidance curve equation adapted to direct fluid flow, wherein the guidance curve equation includes a first adjustable coefficient;

The cross-section is swept along a guide curve determined by the guide curve equation adjusted according to the first adjustable coefficient to determine the geometry of the fin.

Accordingly, the guiding curve sweep cross-section determined using the guiding curve equation including the first adjustable coefficient, wherein the guiding curve equation is adjustable, thereby increasing the design space and optimization opportunities, while not requiring a large amount of computing resources.

In one embodiment, the determining the cross-section of the fin includes: determining a cross-section equation including a second adjustable coefficient; the method also includes:

Performing heat dissipation simulation on the geometric structure of the fins;

When the performance index of the heat dissipation simulation does not meet the predetermined target, the first adjustable coefficient and/or the second adjustable coefficient is adjusted.

It can be seen that the cross-sectional equation includes a second adjustable coefficient, and various cooling requirements can be met by adjusting the first adjustable coefficient and/or the second adjustable coefficient.

In one embodiment, the determining the cross-section of the fin includes: determining the cross-section of the fin in an explicit manner; the method further includes:

Performing heat dissipation simulation on the geometric structure of the fins;

When the performance index of the heat dissipation simulation does not meet the predetermined target, the first adjustable coefficient is adjusted.

Therefore, various expected performances can be achieved by adjusting the first adjustable coefficient.

In one embodiment, also include:

When the performance index of the heat dissipation simulation meets the predetermined target, a design template is stored in a design template library, wherein the cross-section equation and the guide curve equation are associated and stored in the design template.

It can be seen that the cross-section equation and the guide curve equation can be associated and saved in the design template, which is convenient for subsequent and quick use.

In one embodiment, also include:

Determining the included angle between the geometric structure of the fin and the heat dissipation space;

The geometry of the fins is arranged on the base based on the included angle to form a fin unit.

Therefore, a basic fin unit is realized, which is convenient for combined use.

In one embodiment, also include:

A plurality of said fin units are connectedly combined along respective guide curves to form a fin assembly, wherein said fin assembly has a unified heat dissipation effect independent of the variable air inlet direction.

It can be seen that the combination mode optimization strategy is introduced to ensure that the airflow in all directions has a uniform heat dissipation effect.

In one embodiment, also include:

A lattice structure is filled between adjacent fins having the geometry.

Therefore, by filling the lattice structure, the heat dissipation performance can be further enhanced to achieve the target flow rate and lower pressure drop.

In one embodiment, also include:

When the fin assembly does not comply with predetermined casting rules or additive manufacturing rules, sending a prompt message;

In response to the prompt information, adjust the first adjustable coefficient or the second adjustable coefficient.

It can be seen that the manufacturability of the heat sink is improved by further combining the manufacturing-related specific design rules.

An apparatus for determining the geometry of a heat sink fin, comprising:

a first determination module, configured to determine the cross-section of the fin;

A second determination module, configured to determine a guide curve equation adapted to guide fluid flow, wherein the guide curve equation includes a first adjustable coefficient;

A third determining module, configured to sweep the cross-section along the guide curve adjusted according to the first adjustable coefficient and determined by the guide curve equation, so as to determine the geometric structure of the fin.

Therefore, the swept cross-section of the guide curve is determined using the guide curve equation including the first adjustable coefficient, wherein the guide curve equation is adjustable, thereby increasing the design space and optimization opportunities, while not requiring a large amount of computing resources.

In one embodiment, the first determining module is configured to determine a cross-sectional equation including a second adjustable coefficient; the device also includes:

The adjustment module is used to perform heat dissipation simulation on the geometric structure of the fin; when the performance index of the heat dissipation simulation does not meet the predetermined target, adjust the first adjustable coefficient and/or the second adjustable coefficient.

It can be seen that the cross-sectional equation includes a second adjustable coefficient, and various cooling requirements can be met by adjusting the first adjustable coefficient and/or the second adjustable coefficient.

In one embodiment, the first determination module explicitly determines the cross-section of the fin; the device also includes:

The adjustment module is used to perform heat dissipation simulation on the geometric structure of the fin; when the performance index of the heat dissipation simulation does not meet the predetermined target, adjust the first adjustable coefficient.

Therefore, various expected performances can be achieved by adjusting the first adjustable coefficient.

In one embodiment, the adjustment module is further configured to save the design template in the design template library when the performance index of the heat dissipation simulation meets the predetermined target, wherein the design template is associated with saving the cross section equation and the guide curve equation.

It can be seen that the cross-section equation and the guide curve equation can be associated and saved in the design template, which is convenient for subsequent and quick use.

In one embodiment, the third determining module is further configured to determine an included angle between the geometric structure of the fin and the heat dissipation space; and arrange the geometric structure of the fin on the base based on the included angle, to form the fin unit.

Therefore, a basic fin unit is realized, which is convenient for combined use.

In one embodiment, also include:

The combination module is used for combining the plurality of fin units into a fin assembly along their respective guiding curves, wherein the fin assembly has a unified heat dissipation effect independent of the variable air inlet direction.

It can be seen that the combination mode optimization strategy is introduced to ensure that the airflow in all directions has a uniform heat dissipation effect.

In one embodiment,

The third determining module is further configured to fill a lattice structure between adjacent fins having the geometric structure.

Therefore, by filling the lattice structure, the heat dissipation performance can be further enhanced to achieve the target flow rate and lower pressure drop.

In one embodiment, the adjustment module is further configured to issue a prompt message when the fin assembly does not comply with predetermined casting rules or additive manufacturing rules; in response to the prompt message, adjust the first possible adjustment coefficient or the second adjustable coefficient.

It can be seen that the manufacturability of the heat sink is improved by further combining the manufacturing-related specific design rules.

An electronic device including a processor and memory;

An application program that can be executed by the processor is stored in the memory, and is used to make the processor execute the method for determining the geometric structure of the radiator fin as described in any one of the above items.

A computer-readable storage medium, in which computer-readable instructions are stored, and the computer-readable instructions are used to execute the method for determining the geometric structure of a radiator fin as described in any one of the above.

Description of drawings

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those of ordinary skill in the art will be more aware of the above-mentioned and other features and advantages of the present invention. In the accompanying drawings:

Fig. 1 is a schematic diagram of determining the geometric structure of radiator fins in the prior art.

FIG. 2 is a flowchart of a method for determining the geometry of a heat sink fin according to an embodiment of the present invention.

3 is a first schematic diagram of determining the geometry of a heat sink fin according to an embodiment of the present invention.

FIG. 4 is a second schematic diagram of determining the geometry of a heat sink fin according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a pattern of a combined fin unit according to an embodiment of the present invention.

6 is a schematic diagram of a filled lattice structure according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of adjusting the geometric structure of a heat sink according to manufacturing rules according to an embodiment of the present invention.

Fig. 8 is a schematic flow chart of designing a heat sink according to an embodiment of the present invention.

Fig. 9 is a structural diagram of a distributed inverter including power modules.

Fig. 10 is a schematic structural diagram of a device for determining the geometric structure of radiator fins according to an embodiment of the present invention.

FIG. 11 is a block diagram of an apparatus for determining a heat sink fin geometry with a processor-memory architecture according to an embodiment of the present invention.

Wherein, the reference signs are as follows:

label	meaning
10	cross section
11	parallel lines
12	Parallel fin
100	Method for Determining the Geometry of Radiator Fins
101～103	step
20	trapezoidal cross section
twenty one	guide curve
twenty two	Fin geometry
twenty three	cooling space
twenty four	Oriented fin structure
25	base
26	Fin unit
27	Rounded Fin Elements
30	Trigonometry-Based Cross Sections
31	guide curve
32	Fin geometry
33	cooling space
34	Oriented fin structure
35	base
36	Fin unit
51	fins
52a, 52b...52e		lattice structure
55	TPMS unit cell

56	TPMS bracket
70	sharp corner
71	fillet
72	uneven wall thickness
73	uniform wall thickness
74	Undrafted
75	draft
80	sharp corner
81	fillet
82	member
83	member
84	Lumen
85	Lumen
90	design constraints
90a	Heat sink design goals
90b	Heat sink design space
90c	Constraints for Heat Sink Design
90d	Manufacturing Process Constraints
91	Radiator Model Generation Module
92	design template
92a		cross section
92b		guide curve
92c	Fin Angle and Fillet Treatment
93	Lattice structure processing

94	component integration
95a		performance analysis
95b	Manufacturing Rule Verification
96	Design parameter update
97	Convergence Verification
98	Export Heat Sink Design Results
87	motor
88	power module
89	control module
600	Device for determining the geometry of radiator fins
601	first determination module
602	The second determination module
603	The third determination module
604	Adjustment module
605	Combination module
700	Electronic equipment
701	processor
702	memory

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

For the sake of brevity and intuition in description, the solution of the present invention is described below by describing several representative implementation manners. Numerous details in the embodiments are only used to help the understanding of the solutions of the present invention. But obviously, the technical solution of the present invention may not be limited to these details when implemented. In order to avoid unnecessarily obscuring the solution of the present invention, some embodiments are not described in detail, but only a framework is given. Hereinafter, "including" means "including but not limited to", and "according to..." means "at least according to, but not limited to only based on...". Due to the language habits of Chinese, when the quantity of a component is not specifically indicated below, it means that the component can be one or more, or can be understood as at least one.

FIG. 2 is a flowchart of a method for determining the geometry of a heat sink fin according to an embodiment of the present invention.

As shown in Figure 2, the method 100 includes:

Step 201: Determine the cross section of the fin.

Here, the fin cross-section can be determined explicitly or implicitly. For example, in explicit mode, the cross-sectional profile of the fins can be shown based on user triggers. In implicit mode, the equation of the cross section is provided based on user input or selection, etc.

Step 202: Determine a guide curve equation adapted to guide fluid flow, wherein the guide curve equation includes a first adjustable coefficient.

Wherein, the guide curve equation may be provided based on user input or selection. The guide curve equation can be implemented in various functional forms, for example as a trigonometric function equation or an indicator function equation.

Step 203: Sweeping (sweeping) the cross-section along the guide curve determined according to the guide curve equation adjusted according to the first adjustable coefficient to determine the geometric structure of the fin.

Here, the cross-section is swept along a guide curve determined by the guide curve equation, resulting in the geometry of the fin.

It can be seen that the swept cross-section of the guide curve determined by the guide curve equation including the first adjustable coefficient, wherein the guide curve equation is adjustable, thereby increasing the design space and optimization opportunities, while not requiring a large amount of computing resources.

In one embodiment, determining the cross-section of the fin in step 101 includes: determining a cross-section equation that includes a second adjustable coefficient; the method 100 also includes: performing heat dissipation simulation on the geometric structure of the fin; when the performance of the heat dissipation simulation When the index does not meet the predetermined target, adjust the first adjustable coefficient and/or the second adjustable coefficient. It can be seen that the cross-sectional equation includes a second adjustable coefficient, and various heat dissipation requirements can be met by adjusting the first adjustable coefficient and/or the second adjustable coefficient.

Preferably, at least one of the following is included: the cross-sectional equation is a trapezoidal equation, and the guide curve equation is an exponential function equation; the cross-sectional equation and the guide curve equation are respective trigonometric function equations; the cross-sectional equation is a trapezoidal equation, and the guide curve equation for trigonometric equations, and so on.

The above exemplarily describes typical examples of the cross-section equation and the guide curve equation, and those skilled in the art can appreciate that this description is only exemplary and is not intended to limit the protection scope of the embodiments of the present invention.

In one embodiment, determining the cross-section of the fin in step 101 includes: determining the cross-section of the fin in an explicit manner; the method 100 also includes: performing heat dissipation simulation on the geometric structure of the fin; when the performance index of the heat dissipation simulation When the predetermined target is not met, adjust the first adjustable coefficient. Various expected performances can be achieved by adjusting the first adjustable coefficient. Preferably, the cross-section determined in an explicit manner also includes adjustable parameters (such as the top width of the trapezoid; the bottom width; height, etc.). By providing adjustable parameters, the design space can be further increased to facilitate the design of fins that meet the predetermined goals. In addition, the intuition can be improved by explicitly determining the cross-section of the fins.

In one embodiment, the method further includes: when the performance index of the heat dissipation simulation meets the predetermined target, saving the design template in the design template library, wherein the cross-section equation and the guiding curve equation are associated and saved in the design template. It can be seen that the cross-section equation and the guide curve equation can be associated and saved in the design template, which is convenient for subsequent and quick use. The adjusted first adjustable coefficient and the second adjustable coefficient can be further reserved in the design template, so as to facilitate quick use by subsequent users. Optionally, the explicit cross-section and guide curve equation (including the first adjustable coefficient) can be saved in association in the design template, and the adjustable parameters of the cross-section and the constraints of the adjustable parameters can be saved in the design template to control the generation of Model geometry and dimensions. Post-processing parameters such as fin angle and fillet processing can also be saved in the design template, which is convenient for subsequent users to use quickly.

In one embodiment, the method further includes: determining an included angle between the geometric structure of the fin and the heat dissipation space; and arranging the geometric structure of the fin on the base based on the included angle to form a fin unit. Therefore, a basic fin unit is realized, which is convenient to use in combination. The method 100 further includes: connecting a plurality of fin units along respective guide curves into a fin assembly, wherein the fin assembly has a unified heat dissipation effect independent of the variable air inlet direction. It can be seen that the combination mode optimization strategy is introduced to ensure that the airflow in all directions has a uniform heat dissipation effect.

In one embodiment, further comprising: filling the lattice structure between the adjacent fins having the geometric structure. Therefore, by filling the lattice structure, the heat dissipation performance can be further enhanced to achieve the target flow rate and lower pressure drop.

In one embodiment, the method further includes: when the fin assembly does not comply with predetermined casting rules or additive manufacturing rules, sending a prompt message; in response to the prompt message, adjusting the first adjustable coefficient or the second adjustable coefficient. It can be seen that the manufacturability of the heat sink is improved by further combining the manufacturing-related specific design rules.

Here, the geometry of the fins is generated based on a design template that integrates mathematical equations, parameters, and constraints to control the geometry and dimensions of the resulting model. Different fin configurations can be generated using template options with different geometric features and parameters.

3 is a first schematic diagram of determining the geometry of a heat sink fin according to an embodiment of the present invention.

Get associated design templates that hold explicit cross-section and guide curve equations from the Design Template Library. In this design template, the guide curve 21 is implemented as an exponential function

The guide curve 21 may be generated as a contour with a function of discrete level values. The density or spacing between each guide curve 21 is controlled by the discrete level value set when generating the contour map, for example

where z _i =a ₁ , a ₂ , . . . , a _n . The explicit cross-section is implemented as a trapezoidal cross-section 20 which can be shown directly. The guide curve 21 sweeps the trapezoidal cross-section 20 , generating the geometry 22 of the fin. The width of the trapezoidal cross-section 21 gradually decreases from the top to the bottom adjacent to the substrate. The planar arrangement of the fins is determined by the contour of the guide curve 21 . The trapezoidal cross-section 21 has a trapezoidal shape determined by three adjustable parameters including: top width; bottom width; height. The adjustable coefficients of the guide curve 21 include m1, m2 and m3. By adjusting the adjustable coefficient of the guide curve 21 and/or the adjustable parameter of the trapezoidal cross-section 21, the geometry 22 of the fin can be adjusted.

In order to evaluate the heat dissipation performance of the radiator model based on each geometric structure 22, a thermal fluid simulation framework with appropriate working and boundary conditions can be established, and key performance indicators such as temperature distribution, uniformity, and efficiency can be achieved through simulation. Based on the simulation results, the adjustable coefficients and/or adjustable parameters are finally determined, so as to determine the final geometric structure of the fins. The determined fin geometry 22 is then oriented at an appropriate angle relative to the heat dissipation space 23 of the heat sink, intersecting the heat dissipation space 23 to form the oriented fin structure 24. The oriented fin structure 24 is combined with a base 25 or other assembly fixture into a fin unit 26 . Considering the straight line feature of the trapezoidal cross-section 21 , rounding is then performed on the fin unit 26 to obtain a rounded fin unit 27 . Rounding of appropriate radii eliminates sharp corners and edges to improve manufacturability.

FIG. 4 is a second schematic diagram of determining the geometry of a heat sink fin according to an embodiment of the present invention.

Get a design template with associated saved cross-section equations and guide curve equations from the design template library. In this design template: the cross section equation is implemented as a trigonometric based function y(x)=b ₁ arctan(b ₂ sin(b ₃ x+b ₄ )+b ₅ )+b ₆ ; where b ₁ , b ₂ , b ₃ , b ₄ , b ₅ and b ₆ are all adjustable coefficients. The guide curve 31 is embodied as a sinusoid, for example y(x)=c ₁ sin(c ₂ x+c ₃ ). Among them, c ₁ , c ₂ and c ₃ are all adjustable coefficients.

The guide curve 31 sweeps the cross section 30 defined by the cross section equation to generate the geometry 32 of the fin. The planar arrangement of the fins is determined by the contour of the guide curve 31 . The cross section 30 is shaped by b ₁ , b ₂ , b ₃ , b ₄ , b ₅ and b ₆ and the guide curve 31 is shaped by c ₁ , c ₂ and c ₃ . The fin geometry 32 can be adjusted by adjusting the adjustable coefficients b ₁ , b ₂ , b ₃ , b ₄ , b ₅ , and b ₆ , and/or by adjusting the adjustable coefficients c ₁ , c _{2 ,} and c ₃ .

In order to evaluate the heat dissipation performance of the radiator model based on each geometric structure 32, a thermal fluid simulation framework with appropriate working and boundary conditions can be established, and key performance indicators such as temperature distribution, uniformity, and efficiency can be achieved through simulation. Each adjustable coefficient is finally determined based on the simulation results, so as to determine the final geometric structure of the fin. The determined fin geometry 32 is then oriented at an appropriate angle relative to the heat dissipation space 33 of the heat sink, intersected with the heat dissipation space 33 to form, and combined with a base 35 or other assembly fixture into a fin unit 36 .

Considering the equivalence of heat dissipation effects when products are installed in different directions or positions, the above geometric structures can be used as units distributed in various patterns to accommodate airflow from different directions. Fig. 5 is a schematic diagram of a pattern of a combined fin unit according to an embodiment of the present invention. Figure 5 is shown for example purposes only, and the specific optimization mode settings depend on the integrated optimization calculations and the shape/size constraints of the heat sink plate.

Applicants have also discovered that lattice structures are ideal for heat transfer applications due to their high surface area and light weight. The additive manufacturing process allows the lattice structure to be integrated into the corrugated fin heat sink design to further enhance thermal performance and achieve targeted flow rates and lower pressure drop.

6 is a schematic diagram of a filled lattice structure according to an embodiment of the present invention. Figure 6 shows a side view of a heat sink containing fins 51 and the spaces between adjacent fins being filled by a lattice structure with a user-defined configuration. For example, the lattice structures 52a, 52b...52e are respectively filled into the spaces between adjacent cooling fins. Figure 6 also shows a typical TPMS unit cell 55 and TPMS support 56 defined by a parametric function that can be integrated into a heat sink design. The parameters of the TPMS equation control the density, porosity, gradient transition, and characteristic size of the lattice structure. The TPMS unit cell 55 is also self-supporting, which ensures the manufacturability of additive manufacturing. Both the heat sink structure of the above-mentioned lattice structure and the irregular heat sink structure generated by topology optimization are suitable for generation by additive manufacturing.

In addition to meeting other design criteria such as volume and weight, this can be combined with the pre-definition of manufacturing process-specific design rules to ensure the manufacturability of the resulting heat sink design. Design rules imposed by a particular manufacturing process are incorporated in two ways. For explicit parameter-dependent properties, design rules are imposed as constraints on the parameters. For geometrical features implicitly controlled by the underlying function and parameter definition model, these geometrical features are evaluated during the design rule checking step by geometric analysis of the resulting model.

FIG. 7 is a schematic diagram of adjusting the geometric structure of a heat sink according to manufacturing rules according to an embodiment of the present invention.

For die casting processes: Design rules include avoiding sharp corners/edges by adding rounded features with proper radii, maintaining uniform wall thickness at minimum and maximum, and incorporating drafts with proper direction and angle. As shown in the upper row of sub-figures of FIG. 7 , the sharp corner 70 does not comply with the design rules of the die-casting process, but after being adjusted to the rounded corner 71 , it complies with the design rules of the die-casting process. The uneven wall thickness 72 does not comply with the design rules of the die-casting process, and after being adjusted to the uniform wall thickness 73, it complies with the design rules of the die-casting process. The undrafted mold 74 does not comply with the design rules of the die-casting process, and after being adjusted to the drafted mold 75, it conforms to the design rules of the die-casting process.

For Additive Manufacturing: Design rules include avoiding sharp corners/edges by adding fillet features, avoiding thin features with minimum component size constraints, avoiding small internal cavities with minimum cavity size constraints, etc. As shown in the lower row of sub-figures of FIG. 7 , the sharp corner 80 does not comply with the design rules for additive manufacturing, but after being adjusted to a rounded corner 81 , it complies with the design rules for additive manufacturing. Component 82 does not meet the minimum component size and does not comply with the design rules for additive manufacturing. After being adjusted to component 83, it meets the minimum component size and complies with the design rules for additive manufacturing. The inner cavity 84 does not meet the minimum inner cavity size and does not meet the design rules for additive manufacturing. After being adjusted to the inner cavity 85, it meets the minimum inner cavity size and meets the design rules for additive manufacturing.

Fig. 8 is a schematic flow chart of designing a heat sink according to an embodiment of the present invention.

In FIG. 8, design constraints 90 are first determined. Design constraints 90 include: heat sink design goals 90a, heat sink design spaces 90b, heat sink design constraints 90c, and manufacturing process constraints 90d. The design constraints 90 are provided to a heat sink model generation module 91 . The radiator model generation module 91 contains the selected design template 92 . Design template 92 includes cross section 92a, guide curve 92b, and fin angle and fillet 92c. The radiator model generation module 91 also includes lattice structure processing 93 for filling the lattice structure and component integration 94 for forming the final radiator model.

Next, a performance analysis 95a and a manufacturing rule check 95b are performed on the heat sink model. In the performance analysis 95a, heat dissipation simulation is performed on the radiator model; when the performance index of the heat dissipation simulation does not meet the predetermined target, the performance index is met by reselecting the design template 92 or adjusting the curves, parameters or coefficients in the design template 92. Target. In the manufacturing rule verification 95b, fine-tune the components that do not meet the manufacturing rules, or reselect the design template 92 or adjust the curves, parameters or coefficients in the design template 92, so that the radiator model as a whole conforms to the manufacturing rules. Next, execute design parameter update 97 to update the underlying design parameters of the heat sink model, and execute output 98 of heat sink design results after convergence verification 97 is achieved.

The heat sink based on the embodiments of the present invention can be applied to various scenarios, such as the heat dissipation scenario of a distributed inverter. Distributed inverters usually adopt a modular design, including control modules and power modules, which can be integrated with the motor system. The power module supplies the motor with power within its performance range. As the market demands higher power and more compact size products, thermal management of power modules, i.e. dissipating the heat generated during operation to avoid undesired temperature rise, has become a key factor for product performance and market competitiveness. Due to the variety of application scenarios of distributed inverters, it is also important to ensure effective heat dissipation when installed in different directions or locations. Moreover, the heat sink radiator proposed in the embodiment of the present invention can be applied to the structure generation method of low-cost large-scale manufacturing (such as casting), and can also be applied to small-batch high-value-added high-performance products based on additive manufacturing. Main way heat sink heatsink.

Fig. 9 is a structural diagram of a distributed inverter including power modules. In FIG. 9 , the distributed inverter includes a power module 88 and a control module 89 , wherein the distributed inverter is integrated with the motor 87 . The heat sink of the embodiment of the present invention can be used to perform heat dissipation for the power module 88 .

FIG. 10 is a structural diagram of an apparatus for determining a geometric structure of a radiator fin according to an embodiment of the present invention.

As shown in Figure 10, the device 600 includes:

A first determining module 601, configured to determine the cross section of the fin;

The second determination module 602 is configured to determine a guide curve equation adapted to guide fluid flow, wherein the guide curve equation includes a first adjustable coefficient;

The third determination module 603 is configured to sweep the cross-section along the guide curve adjusted according to the first adjustable coefficient and determined by the guide curve equation, so as to determine the geometric structure of the fin.

In one embodiment, the first determination module 601 is used to determine the cross-section equation that includes the second adjustable coefficient; the device 600 also includes: an adjustment module 604, used to perform heat dissipation simulation on the geometric structure of the fin; When the simulated performance index does not meet the predetermined target, adjust the first adjustable coefficient and/or the second adjustable coefficient.

In one embodiment, the first determination module 601 determines the cross-section of the fin in an explicit manner; the device 600 also includes: an adjustment module 604, which is used to perform heat dissipation simulation on the geometric structure of the fin; when the performance of the heat dissipation simulation When the index does not meet the predetermined target, the first adjustable coefficient is adjusted.

In one embodiment, the adjustment module 604 is further configured to save the design template in the design template library when the performance index of the heat dissipation simulation meets the predetermined target, wherein the cross-section equation and the guide curve equation are associated and saved in the design template.

In one embodiment, the third determining module 603 is further configured to determine the angle between the geometric structure of the fin and the heat dissipation space; and arrange the geometric structure of the fin on the base based on the angle to form a fin unit.

In one embodiment, a combination module 605 is also included, which is used to connect multiple fin units into a fin assembly along their respective guiding curves, wherein the fin assembly has uniform heat dissipation independent of the variable air inlet direction Effect.

In one embodiment, the third determination module 603 is also used to fill the lattice structure between adjacent fins with geometric structures.

In one embodiment, the adjustment module 604 is also used to issue a prompt message when the fin assembly does not comply with predetermined casting rules or additive manufacturing rules; in response to the prompt message, adjust the first adjustable coefficient or the second adjustable coefficient.

Embodiments of the present invention also propose an apparatus for determining a geometric structure of a radiator fin with a processor-memory architecture. 11 is a block diagram of an electronic device with a processor-memory architecture adapted to determine a heat sink fin geometry in accordance with an embodiment of the present invention.

As shown in FIG. 11, the electronic device 700 includes a processor 701, a memory 702, and a computer program stored on the memory 702 and operable on the processor 701. When the computer program is executed by the processor 701, any one of the above-mentioned definite heat dissipation is realized. The geometry of the device fins.

Wherein, the memory 702 can be specifically implemented as various storage media such as electrically erasable programmable read-only memory (EEPROM), flash memory (Flash memory), and programmable program read-only memory (PROM). The processor 701 may be implemented to include one or more central processing units or one or more field programmable gate arrays, wherein the field programmable gate arrays integrate one or more central processing unit cores. Specifically, the central processing unit or central processing unit core may be implemented as a CPU or MCU or DSP, and so on.

It should be noted that not all steps and modules in the above-mentioned processes and structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as required. The division of each module is only to facilitate the description of the functional division adopted. In actual implementation, one module can be divided into multiple modules, and the functions of multiple modules can also be realized by the same module. These modules can be located in the same device. , or on a different device.

The hardware modules in the various embodiments may be implemented mechanically or electronically. For example, a hardware module may include specially designed permanent circuits or logic devices (such as special-purpose processors, such as FPGAs or ASICs) to perform specific operations. Hardware modules may also include programmable logic devices or circuits (eg, including general-purpose processors or other programmable processors) temporarily configured by software to perform particular operations. As for implementing the hardware module in a mechanical way, using a dedicated permanent circuit, or using a temporarily configured circuit (such as configured by software) to realize the hardware module, it can be decided according to cost and time considerations.

The above descriptions are only preferred implementation modes of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (18)

1. A method (100) of determining the geometry of a heat sink fin, comprising:

   determining the cross section of the fin (101);

   determining a guide curve equation adapted to guide fluid flow, wherein the guide curve equation includes a first adjustable coefficient (102);

   Sweeping said cross-section along a guide curve determined by said guide curve equation adjusted according to said first adjustable coefficient to determine said fin geometry (103).
2. The method (100) according to claim 1, characterized in that,

   The determining the cross-section (101) of the fin includes: determining a cross-section equation including a second adjustable coefficient; the method (100) also includes:

   Performing heat dissipation simulation on the geometric structure of the fins;

   When the performance index of the heat dissipation simulation does not meet the predetermined target, the first adjustable coefficient and/or the second adjustable coefficient is adjusted.
3. The method (100) according to claim 1, characterized in that,

   The determining the cross-section of the fin (101) includes: determining the cross-section of the fin in an explicit manner; the method (100) also includes:

   Performing heat dissipation simulation on the geometric structure of the fins;

   When the performance index of the heat dissipation simulation does not meet the predetermined target, the first adjustable coefficient is adjusted.
4. The method (100) according to claim 2, further comprising:

   When the performance index of the heat dissipation simulation meets the predetermined target, a design template is stored in a design template library, wherein the cross-section equation and the guide curve equation are associated and stored in the design template.
5. The method (100) according to claim 1, further comprising:

   Determining the included angle between the geometric structure of the fin and the heat dissipation space;

   The geometry of the fins is arranged on the base based on the included angle to form a fin unit.
6. The method (100) according to claim 5, further comprising:

   A plurality of the fin units are combined in a continuous manner along respective guide curves to form a fin assembly, wherein the fin assembly has a unified heat dissipation effect independent of the variable air inlet direction.
7. The method (100) according to claim 1, further comprising:

   A lattice structure is filled between adjacent fins having the geometry.
8. The method (100) according to claim 2, further comprising:

   When the fin assembly does not comply with predetermined casting rules or additive manufacturing rules, sending a prompt message;

   In response to the prompt information, adjust the first adjustable coefficient or the second adjustable coefficient.
9. A device (600) for determining the geometry of radiator fins, characterized in that it comprises:

   A first determination module (601), configured to determine the cross section of the fin;

   A second determination module (602), configured to determine a guide curve equation adapted to guide fluid flow, wherein the guide curve equation includes a first adjustable coefficient;

   A third determining module (603), configured to sweep the cross-section along the guide curve adjusted according to the first adjustable coefficient and determined by the guide curve equation, so as to determine the geometric structure of the fin.
10. The device (600) according to claim 9, characterized in that,

    The first determination module (601) is used to determine the cross-section equation comprising the second adjustable coefficient; the device (600) also includes:

    An adjustment module (604), configured to perform heat dissipation simulation on the geometric structure of the fins; when the performance index of the heat dissipation simulation does not meet the predetermined target, adjust the first adjustable coefficient and/or the second adjustable coefficient .
11. The device (600) according to claim 9, characterized in that,

    The first determination module (601) determines the cross-section of the fin in an explicit manner; the device (600) also includes:

    An adjustment module (604), configured to perform heat dissipation simulation on the geometric structure of the fin; when the performance index of the heat dissipation simulation does not meet a predetermined target, adjust the first adjustable coefficient.
12. The device (600) according to claim 10, characterized in that,

    The adjustment module (604) is further configured to save the design template in the design template library when the performance index of the heat dissipation simulation meets the predetermined target, wherein the design template stores the cross-section equation and the Describe the guide curve equation.
13. The device (600) according to claim 9, characterized in that,

    The third determination module (603) is further configured to determine the angle between the geometric structure of the fin and the heat dissipation space; arrange the geometric structure of the fin on the base based on the angle to form a fin slice unit.
14. The device (600) according to claim 13, further comprising:

    A combination module (605), configured to connect multiple fin units along their respective guiding curves into a fin assembly, wherein the fin assembly has a uniform heat dissipation effect independent of variable air intake directions.
15. The device (600) according to claim 9, characterized in that,

    The third determining module (603) is further configured to fill a lattice structure between adjacent fins having the geometric structure.
16. The device (600) according to claim 10, characterized in that,

    The adjustment module (604) is further configured to send a prompt message when the fin assembly does not comply with predetermined casting rules or additive manufacturing rules; in response to the prompt message, adjust the first adjustable coefficient or The second adjustable coefficient.
17. An electronic device (700), characterized by comprising a processor (701) and a memory (702);

    An application program executable by the processor (701) is stored in the memory (702), which is used to make the processor (701) perform the determination of the heat sink according to any one of claims 1 to 8. Fin geometry method (100).
18. A computer-readable storage medium, characterized in that computer-readable instructions are stored therein, and the computer-readable instructions are used to perform the method of determining the geometric structure of the radiator fin according to any one of claims 1 to 8 method(100).

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