CN216253685U - Inverter module - Google Patents

Abstract

The utility model discloses an inverter module, which comprises a heating element and a radiator for radiating the heating element, wherein the radiator comprises a first heat exchanger and a second heat exchanger, an inner cavity of the first heat exchanger and an inner cavity of the second heat exchanger are communicated with each other to form a through cavity, the second heat exchanger is integrated on the upper part of the first heat exchanger, a cooling medium is loaded in the through cavity, the heating element is arranged by being attached to the outer wall of the first heat exchanger, the first heat exchanger absorbs heat to enable the cooling medium in the first heat exchanger to absorb heat and vaporize and enter the second heat exchanger, and the second heat exchanger dissipates heat to enable the cooling medium in the second heat exchanger to dissipate heat, condense and liquefy and flow back to the first heat exchanger. Because first heat exchanger and second heat exchanger are integrated to be arranged, the inner chamber of the two link up each other, have saved the arrangement of middle circulation pipeline, have reduced the occupation space of radiator greatly to the overall dimension of dc-to-ac converter module has effectively been reduced.

Description

Inverter module

Technical Field

The utility model relates to the technical field of inverters, in particular to an inverter module.

Background

At present, the heat dissipation mode of a high-power inverter is mainly forced air cooling and liquid cooling. The method has relatively poor heat dissipation capability, is easily influenced by the ambient temperature, is difficult to meet the requirement of a radiator of an inverter with high power level and high heat flux density, and cannot meet the application requirements of scenes such as high humidity, high salt fog and the like; the liquid cooling technology is to conduct heat to the heat exchanger and then adopt air cooling to intensively dissipate heat through circulation of liquid media, and the liquid cooling technology has strong heat dissipation capability, but the liquid cooling technology has high cost and poor relative reliability, and has generally leakage risk, thus causing very high maintenance cost in the whole life cycle.

The thermosiphon phase-change heat exchange technology provides a good choice, and because the thermosiphon phase-change heat exchange technology is involved, the heat dissipation efficiency of the thermosiphon phase-change heat exchange technology is higher than that of a forced air cooling radiator technology; the circulating power of the internal refrigerant medium of the thermosiphon phase-change heat exchange is the action of thermosiphon and gravity, so that a series of external driving is not needed, and the cost is lower than that of liquid cooling.

However, the first heat exchanger and the second heat exchanger of the existing thermosiphon phase-change heat exchanger mostly adopt a split type arrangement structure, and are connected through a circulating pipeline in the middle, and the overall size of the inverter module is large due to the arrangement mode.

In summary, how to solve the problem of the large overall size of the inverter module has become an urgent problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an inverter module to solve the problem of large overall size of the inverter module.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an inverter module, includes heating element and is used for right heating element carries out radiating radiator, the radiator includes first heat exchanger and second heat exchanger, the inner chamber of first heat exchanger with the inner chamber of second heat exchanger link up each other and form the link up cavity, just the second heat exchanger integration in the upper portion of first heat exchanger, load into in the link up cavity and load cooling medium, heating element laminating in the outer wall of first heat exchanger arranges, first heat exchanger heat absorption can make and be located cooling medium heat absorption vaporization in the first heat exchanger gets into the second heat exchanger, the heat dissipation of second heat exchanger can make cooling medium heat dissipation condensation liquefaction in the second heat exchanger flow back to first heat exchanger.

Preferably, at least one of the two cavity wall surfaces of the first heat exchanger and the second heat exchanger is provided with a fin or a capillary structure.

Preferably, the first heat exchanger is an evaporation cold plate arranged horizontally, the second heat exchanger is integrated on the top surface of the evaporation cold plate, and the heating element is attached to the bottom surface of the evaporation cold plate and/or attached to the top surface of the evaporation cold plate except for the second heat exchanger.

Preferably, the second heat exchanger comprises at least one condenser, and the heat dissipation channel formed outside the condenser is horizontally arranged.

Preferably, when the second heat exchanger comprises a plurality of condensers, the inner cavities of any two adjacent condensers are communicated through a balance pipe.

Preferably, the first heat exchanger is an evaporation cold plate which is vertically arranged, the second heat exchanger is arranged on the side portion of the evaporation cold plate and close to the top end of the evaporation cold plate, and the heating element is attached to the side face of the evaporation cold plate and close to the lower portion of the evaporation cold plate.

Preferably, the second heat exchanger comprises at least one condenser, and a heat dissipation channel formed outside the condenser is vertically arranged; when the condenser is a plurality of, the condenser arranges in turn from top to bottom.

Preferably, the first heat exchanger comprises a vertical part and a horizontal part, the horizontal part is connected with the top of the vertical part, the second heat exchanger is integrated on the top surface of the horizontal part, and the heating element is attached to the side surface of the vertical part.

Preferably, the second heat exchanger comprises at least one condenser, and the heat dissipation channel formed outside the condenser is horizontally arranged.

Preferably, the first heat exchanger comprises a plurality of vertically arranged evaporation cold plates which are sequentially arranged from top to bottom, the evaporation cold plates are not communicated with each other, second heat exchangers are integrated at positions of the evaporation cold plates close to the upper portions of the evaporation cold plates, and the second heat exchangers are mutually independent.

Compared with the introduction content of the background art, the inverter module comprises a heating element and a radiator used for radiating the heating element, wherein the radiator comprises a first heat exchanger and a second heat exchanger, an inner cavity of the first heat exchanger and an inner cavity of the second heat exchanger are communicated with each other to form a through cavity, the second heat exchanger is integrated on the upper portion of the first heat exchanger, a cooling medium is loaded in the through cavity, the heating element is attached to the outer wall of the first heat exchanger and arranged, the first heat exchanger absorbs heat to enable the cooling medium in the first heat exchanger to absorb heat and vaporize to enter the second heat exchanger, and the second heat exchanger dissipates heat to condense and liquefy the cooling medium in the second heat exchanger and enables the cooling medium to flow back to the first heat exchanger. Above-mentioned inverter module constitutes the structure of hydrocone type phase change heat exchanger through first heat exchanger and second heat exchanger to first heat exchanger and second heat exchanger are integrated to be arranged, and the inner chamber of the two link up each other, have saved the arrangement of middle circulation pipeline, have reduced the occupation space of radiator greatly, thereby have effectively reduced inverter module's overall size.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram illustrating an internal phase change principle of a heat sink according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a forced air cooling structure disposed on an outer side of a heat sink according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a first arrangement angle structure of a top-surface integrated second heat exchanger of a horizontally arranged evaporative cooling plate according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a second arrangement angle structure of a top-surface integrated second heat exchanger of a horizontally arranged evaporative cooling plate according to an embodiment of the present invention;

FIG. 5 is a schematic view of a third arrangement angle structure of the top-surface integrated second heat exchanger of the horizontally arranged evaporative cooling plate according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a configuration of an evaporative cold plate with multiple condensers integrated on the top surface thereof according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a top integrated multiple condenser with balanced tube communication for an evaporative cold plate arranged horizontally according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a top-surface integrated second heat exchanger of a vertically arranged evaporative cooling plate provided in an embodiment of the present invention;

fig. 9 is a schematic perspective view of a first heat exchanger according to an embodiment of the present invention, in which a vertical portion and a horizontal portion are adopted, and a second heat exchanger is integrated with the horizontal portion;

fig. 10 is a schematic structural diagram of a side view in which a first heat exchanger is provided with a vertical portion and a horizontal portion, and a second heat exchanger is integrated with the horizontal portion according to an embodiment of the present invention;

fig. 11 is a schematic top view of a first heat exchanger according to an embodiment of the present invention, in which a vertical portion and a horizontal portion are adopted, and a second heat exchanger is integrated with the horizontal portion;

FIG. 12 is a schematic side view of a second heat exchanger integrated on the side of a vertically arranged evaporative cooling plate according to an embodiment of the present invention;

fig. 13 is a perspective view schematically illustrating a second heat exchanger integrated with a side of a vertically arranged evaporative cooling plate according to an embodiment of the present invention;

FIG. 14 is a schematic side view of a plurality of condensers integrated in sequence from top to bottom on the side of the vertically arranged evaporative cooling plates according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of each condenser separately communicating with a separate first heat exchanger according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of the first heat exchanger in communication with each condenser according to the embodiment of the present invention.

Wherein, in fig. 1-16:

the heat exchanger comprises a first heat exchanger 1, a vertical part 11, a horizontal part 12, a second heat exchanger 2, a condenser 21, a balance pipe 22, a heating element 3, a forced air cooling cavity 4 and a fan 5.

Detailed Description

The core of the utility model is to provide an inverter module to solve the problem of large overall size of the inverter module.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 16, an embodiment of the present invention provides an inverter module, including a heating element 3 and a heat sink for dissipating heat from the heating element 3, where the heat sink includes a first heat exchanger 1 and a second heat exchanger 2, an inner cavity of the first heat exchanger 1 and an inner cavity of the second heat exchanger 2 are mutually communicated to form a through cavity, the second heat exchanger 2 is integrated on an upper portion of the first heat exchanger 1, a cooling medium is loaded in the through cavity, the heating element 3 is arranged in close contact with an outer wall of the first heat exchanger 1, the first heat exchanger 1 absorbs heat to enable the cooling medium in the first heat exchanger 1 to absorb heat to be vaporized and enter the second heat exchanger 2, and the second heat exchanger 2 dissipates heat to enable the cooling medium in the second heat exchanger 2 to dissipate heat, condense, and liquefy, and flow back to the first heat exchanger 1.

Above-mentioned inverter module constitutes the structure of hydrocone type phase change heat exchanger through first heat exchanger and second heat exchanger to first heat exchanger and second heat exchanger are integrated to be arranged, and the inner chamber of the two link up each other, have saved the arrangement of middle circulation pipeline, have reduced the occupation space of radiator greatly, thereby have effectively reduced inverter module's overall size.

It should be noted that, the integration manner between the first heat exchanger and the second heat exchanger may be a bolt fastening connection, or other manners commonly used by those skilled in the art to integrate, for example, a welding connection manner, and the like, which is not limited herein in more detail.

It should be further noted that the first heat exchanger and the second heat exchanger constitute the basic operating principle of the siphon phase-change heat exchanger, as will be understood by those skilled in the art: the heating element (such as power module IGBT) is installed on first heat exchanger (for example evaporation cold plate), when the heating element heat production, the evaporation cold plate is heated, the liquid refrigerant of its inside cavity is heated and forms the higher vapour state refrigerant of temperature, because vapour state refrigerant density is less, can rise to the cavity of second heat exchanger (generally for the condenser) along the cavity of evaporation cold plate, and the condenser outside is equipped with forced air cooling wind channel, in order to dispel the heat for the condenser, lead to the higher vapour state refrigerant of condenser intracavity temperature to receive the cold, liquefy into liquid refrigerant droplet, this liquid refrigerant can flow back to evaporation cavity inside along the wall of condenser inner chamber, thereby satisfy the heat transfer circulation of this heat exchanger inner chamber refrigerant, wherein, first heat exchanger and second heat exchanger have certain difference in height, the second heat exchanger is on, be convenient for the gravity of refrigerant to converge.

In addition, generally, in order to improve the heat dissipation efficiency of the second heat exchanger, the second heat exchanger may be further provided with a forced air cooling mechanism, and specifically, the second heat exchanger may be provided with a forced air cooling cavity 4 and a fan 5 installed at a vent of the forced air cooling cavity 4, so that the heat dissipation efficiency of the second heat exchanger can be enhanced.

In a further embodiment, at least one of the two inner cavity wall surfaces of the inner cavity wall surface of the first heat exchanger 1 and the inner cavity wall surface of the second heat exchanger 2 is provided with a fin or a capillary structure, and the fin or the capillary structure is arranged on the inner cavity wall surface, so that the heat exchange efficiency of the heat exchange medium in the inner cavity of the first heat exchanger 1 and the inner cavity of the second heat exchanger is higher, the evaporation and the liquefaction condensation of the refrigerant in the cavity are more convenient, and the evaporation, the backflow and the like of the refrigerant are more convenient.

In some specific embodiments, the first heat exchanger 1 is an evaporation cold plate arranged horizontally, the second heat exchanger 2 is integrated on the top surface of the evaporation cold plate, and the heating element 3 is attached to the bottom surface of the evaporation cold plate and/or attached to the top surface of the evaporation cold plate except the integrated second heat exchanger 2. Through designing the first heat exchanger into the evaporation cold drawing of horizontal arrangement, because the top surface space of evaporation cold drawing is more sufficient for second heat exchanger 2 has the bigger space of arranging, makes things convenient for second heat exchanger 2 to integrate in the top surface of evaporation cold drawing more.

In a further embodiment, when the first heat exchanger 1 is designed as a horizontally arranged evaporative cold plate, the second heat exchanger 2 comprises at least one condenser 21, and the heat dissipation channels formed on the outside of the condenser 21 are horizontally arranged. One or more condensers can be arranged above the horizontally arranged evaporation cold plate, and the position and the shape of the condenser are not limited. It should be noted that, the heat dissipation channels referred to herein are arranged horizontally, as shown in fig. 3 to 5, and may be in any direction in the horizontal plane, for example, the combination of the first heat dissipation channel and the second heat dissipation channel may be determined according to the specific installation environment of the phase change heat exchanger, and is not limited herein in more detail.

In a further embodiment, when the first heat exchanger 1 is designed as a horizontally arranged evaporation cold plate and the second heat exchanger 2 comprises a plurality of condensers 21, the inner cavities of any two adjacent condensers 21 can be communicated through the balance pipe 22. Through the design of the balance pipe, the pressure of the inner cavity of each condenser is equal, so that the temperature of the refrigerant in each condenser is equal, and the overheating of the next-stage condenser can be avoided.

In some specific embodiments, the first heat exchanger 1 is an evaporation cold plate vertically arranged, the second heat exchanger 2 is disposed at a side portion of the evaporation cold plate and is close to a top end of the evaporation cold plate, the heating element 3 is attached to a side surface of the evaporation cold plate and is close to a lower portion of the evaporation cold plate, and specifically the heating element may be disposed at two sides or a single side of the evaporation cold plate. The second heat exchanger is arranged on the upper part of the evaporative cooling plate, and the connection mode of the second heat exchanger and the evaporative cooling plate is not limited, as shown in fig. 8. Through designing first heat exchanger into the evaporation cold plate structure of vertical arrangement for heating element's arrangement space is bigger, does benefit to the large tracts of land more and arranges heating element.

It should be noted that, as shown in fig. 12-16, when the first heat exchanger 1 adopts the vertically arranged evaporative cooling plates, the second heat exchanger 2 may specifically include at least one condenser 21, and the heat dissipation channel formed outside the condenser 21 is vertically arranged; when the condenser 21 is plural, the condensers 21 are arranged in this order from top to bottom. Through designing the second heat exchanger in the lateral part of the evaporation cold plate of vertical arrangement for the condenser can be done thickly, and inlay on the evaporation cold plate, make its condensation wind channel be vertical direction, its structural configuration is "7" font. Thus, the size of the whole phase change heat exchanger in the height direction is smaller, and the direction of the condensation air channel can be made to be vertical.

In some specific embodiments, the first heat exchanger 1 may further include a vertical portion 11 and a horizontal portion 12, the horizontal portion 12 is connected to a top portion of the vertical portion 11, the second heat exchanger 2 is integrated on a top surface of the horizontal portion 12, and the heat generating element 3 is attached to a side surface of the vertical portion, and may be a single side or a double side. Through designing first heat exchanger 1 into vertical portion and horizontal part two parts, and the second heat exchanger is integrated in the horizontal part for under the prerequisite of guaranteeing that first heat exchanger is vertical to be arranged, the space of arranging of second heat exchanger is bigger, is favorable to arranging the second heat exchanger into arbitrary required angle on the horizontal part, as shown in fig. 9-11, condenser and evaporation cold drawing are equipped with certain angle on vertical plane visual angle, the design of condensation wind channel of being convenient for like this, the condensation wind channel direction does not restrict with perpendicular evaporation cold drawing direction promptly, for example the mode of first heat dissipation channel and the combination of second heat dissipation channel.

It should be noted that, when the first heat exchanger 1 includes the vertical portion 11 and the horizontal portion 12, and the second heat exchanger 2 is integrated with the horizontal portion 12, the second heat exchanger 2 includes at least one condenser 21, and the heat dissipation channel formed outside the condenser 21 is arranged horizontally, specifically, as shown in fig. 11, the heat dissipation channel includes a first heat dissipation channel and a second heat dissipation channel, and in an actual application process, the heat dissipation channel may be arranged at any angle in a horizontal plane according to an actual arrangement requirement, which is not limited in more detail herein.

Due to the difference of the heat productivity of the heating devices on the evaporation cold plate and the size limitation of the evaporation cold plate, the path from the refrigerant in the evaporation cold plate cavity to the condenser is possibly longer, and the heat radiation performance of the refrigerant is limited. Therefore, in some more specific embodiments, as shown in fig. 15, the first heat exchanger 1 may specifically include a plurality of vertically arranged evaporation cold plates arranged sequentially from top to bottom, each evaporation cold plate is not communicated with another evaporation cold plate, the second heat exchanger 2 is integrated at a position of each evaporation cold plate near the upper portion of the evaporation cold plate, and each second heat exchanger 2 is independent of each other. Through designing into a plurality of vertical arrangement's first heat exchanger top-down with the phase change heat exchanger and arrange in proper order and mutually independent structural style, the mode of each second heat exchanger is connected respectively to each first heat exchanger moreover for each second heat exchanger does not receive the restriction of route overlength, and higher heat exchange efficiency can all be guaranteed.

It is understood that, in practical application, when the path from the condenser to the cold plate of the evaporator has little influence on the heat exchange efficiency, the condenser may also be designed as shown in fig. 16, and a plurality of condensers are all designed on the side of the same evaporation cold plate.

The inverter module provided by the utility model is described in detail above. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should be understood that "system", "apparatus", "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

If used in this application, the flowcharts are intended to illustrate operations performed by the system according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.

It is also noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. An inverter module includes a heating element (3) and a heat sink for dissipating heat from the heating element (3), characterized in that the radiator comprises a first heat exchanger (1) and a second heat exchanger (2), the inner cavity of the first heat exchanger (1) and the inner cavity of the second heat exchanger (2) are communicated with each other to form a through cavity, and the second heat exchanger (2) is integrated on the upper part of the first heat exchanger (1), a cooling medium is loaded in the through cavity, the heating element (3) is attached to the outer wall of the first heat exchanger (1), the first heat exchanger (1) absorbs heat and can promote cooling medium in the first heat exchanger (1) to absorb heat and vaporize into the second heat exchanger (2), the heat dissipation of the second heat exchanger (2) can cause the cooling medium in the second heat exchanger (2) to dissipate heat, condense and liquefy and flow back to the first heat exchanger (1).

2. Inverter module according to claim 1, characterized in that at least one of the two cavity walls of the first heat exchanger (1) and the second heat exchanger (2) is provided with fins or capillary structures.

3. The inverter module according to claim 1, characterized in that the first heat exchanger (1) is an evaporation cold plate arranged horizontally, the second heat exchanger (2) is integrated in the top surface of the evaporation cold plate, and the heating element (3) is attached to the bottom surface of the evaporation cold plate and/or attached to the top surface of the evaporation cold plate except for the integration of the second heat exchanger (2).

4. An inverter module according to claim 3, wherein the second heat exchanger (2) comprises at least one condenser (21), and the heat dissipation channel formed outside the condenser (21) is arranged horizontally.

5. The inverter module according to claim 4, wherein when the second heat exchanger (2) includes a plurality of condensers (21), the inner chambers of any adjacent two of the condensers (21) communicate with each other through a balance pipe (22).

6. The inverter module according to claim 1, wherein the first heat exchanger (1) is an evaporation cold plate arranged vertically, the second heat exchanger (2) is disposed at a side of the evaporation cold plate and near a top end of the evaporation cold plate, and the heat generating element (3) is attached to a side of the evaporation cold plate and near a lower portion of the evaporation cold plate.

7. The inverter module according to claim 6, wherein the second heat exchanger (2) comprises at least one condenser (21), and the heat dissipation channel formed outside the condenser (21) is arranged vertically; when the number of the condensers (21) is plural, the condensers (21) are sequentially arranged from top to bottom.

8. The inverter module according to claim 1, wherein the first heat exchanger (1) comprises a vertical part (11) and a horizontal part (12), the horizontal part (12) is connected to the top of the vertical part (11), the second heat exchanger (2) is integrated on the top surface of the horizontal part (12), and the heating element (3) is attached to the side surface of the vertical part.

9. The inverter module according to claim 8, wherein the second heat exchanger (2) comprises at least one condenser (21), and the heat dissipation channel formed outside the condenser (21) is horizontally arranged.

10. The inverter module according to claim 1, wherein the first heat exchanger (1) comprises a plurality of vertically arranged evaporation cold plates arranged from top to bottom in sequence, the evaporation cold plates are not communicated with each other, a second heat exchanger (2) is integrated at a position of each evaporation cold plate close to the upper part of the evaporation cold plate, and the second heat exchangers (2) are independent from each other.

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