Cooling device and power conversion equipment

Abstract

The utility model discloses a cooling device and power conversion equipment, and belongs to the technical field of battery cooling, the cooling device is used for cooling a heating assembly, the cooling device comprises a shell assembly, the shell assembly comprises a first shell and a second shell, the first shell is provided with a first accommodating cavity used for accommodating the heating assembly, the second shell is connected with the first shell, and the first accommodating cavity is used for accommodating the heating assembly; the second shell is provided with a second accommodating cavity, and an air inlet and an air outlet which are communicated with the second accommodating cavity; the fan assembly sucks air into the second containing cavity through the air inlet and discharges the air through the air outlet. The first shell and the second shell are subjected to air cooling through the fan assembly, cooling liquid can transfer part of heat to the first shell, and the first shell can transfer the heat to the second shell, so that cooling of the first shell and the second shell is equivalent to indirect cooling of the cooling liquid, the cooling speed of the cooling liquid is increased, and the service life of the cooling liquid is prolonged. The cooling liquid can absorb more heat on the heating assembly, and the heating assembly is rapidly cooled.

Description

Technical Field

[0001] The present application belongs to the technical field of battery cooling, and in particular relates to a cooling device and a power conversion device. Background Art

[0002] To cool a heating element, the cooling liquid can be used to completely submerge the element, allowing the flowing coolant to remove heat from the element and then dissipate the heat into the outside air, thereby cooling the element. However, due to the large number of batteries in the element, which generates a lot of heat, this method cannot quickly cool the element. Utility Model Content

[0003] Purpose of this application: An embodiment of this application provides a cooling device, aiming to overcome the technical problem of not being able to quickly cool down the heat-generating components; another purpose of an embodiment of this application is to provide a power conversion device.

[0004] Technical solution: A cooling device according to an embodiment of the present application is used to cool a heat-generating component, and the cooling device includes:

[0005] The housing assembly includes a first housing and a second housing, wherein the first housing has a first accommodating cavity for accommodating the heat-generating component, and the second housing is connected to the first housing, and the second housing has a second accommodating cavity, and an air inlet and an air outlet communicated with the second accommodating cavity;

[0006] The fan assembly draws air into the second accommodating cavity through the air inlet and discharges the air through the air outlet.

[0007] In some embodiments, the second shell includes a plurality of second side panels, which enclose the second accommodating cavity. The first shell is located in the second accommodating cavity and is connected to at least one of the second side panels of the second shell.

[0008] In some embodiments, the first shell includes multiple first side panels, multiple first side panels are connected and enclose the first accommodating cavity, and at least one first side panel is connected to the second shell; or, multiple first side panels and part of the second shell together enclose the first accommodating cavity, and multiple first side panels are connected to the second shell.

[0009] In some embodiments, the cooling device includes at least one heat exchange component, the heat exchange component is located in the second accommodating cavity, and the heat exchange component is connected to the first shell;

[0010] The second shell has a plurality of air inlets, and an air inlet direction X of each air inlet is toward at least one heat exchange component.

[0011] In some embodiments, the heat exchange assembly includes a plurality of fins arranged at intervals, and at least a portion of the fins extends along the air inlet direction X of the air inlet.

[0012] In some embodiments, the heat exchange component has a plurality of heat exchange channels, and both ends of the heat exchange channels are respectively connected to the air inlet and the air outlet.

[0013] In some embodiments, the heat exchange component includes:

[0014] a plurality of heat exchange plates arranged at intervals, one end of each heat exchange plate being arranged toward the air inlet, each heat exchange plate being connected to at least one of the first side plates to form the heat exchange channel;

[0015] A plurality of sealing plates are provided at the air inlet end of the heat exchange assembly, and each sealing plate is connected between two adjacent heat exchange plates to seal the gap between the two adjacent heat exchange plates.

[0016] In some embodiments, the second shell includes a main body portion and a connecting portion extending into the main body portion; the internal space between the main body portion and the connecting portion forms a placement cavity, and the placement cavity accommodates the first shell; the connecting portion has an air duct in communication with the heat exchange channel;

[0017] One of the air inlet and the air outlet is arranged at one end of the air duct on the connecting portion, and the other of the air inlet and the air outlet is arranged on the main body; or, the air inlet and the air outlet are respectively arranged at one end of the air duct on different connecting portions.

[0018] In some embodiments, the fan assembly is provided on at least one of the main body, the inner wall of the air inlet, the inner wall of the air duct, the inner wall of the heat exchange channel, and the inner wall of the air outlet.

[0019] In some embodiments, the cooling device also includes: a liquid cooling component, including a liquid inlet pipe and a liquid outlet pipe connected to the first shell, the liquid inlet pipe and the liquid outlet pipe are connected to the first accommodating chamber, the liquid inlet pipe is used to pass the cooling liquid into the first accommodating chamber, and the liquid outlet pipe is used to discharge the cooling liquid in the first accommodating chamber.

[0020] A power conversion device comprises the cooling device described in any one of the above, wherein the heat generating component comprises one or a combination of a battery, a circuit board, a capacitor, a rectifier module, and an inverter module.

[0021] Beneficial effect: The cooling device of the embodiment of the present application is used to cool the heat-generating component. The cooling device includes: a shell assembly, including a first shell and a second shell, the first shell having a first accommodating cavity for accommodating the heat-generating component, the second shell connected to the first shell, the second shell having a second accommodating cavity, and an air inlet and an air outlet connected to the second accommodating cavity; a fan assembly, which draws air into the second accommodating cavity through the air inlet and discharges it through the air outlet. The first shell and the second shell are cooled by air through the fan assembly. Since the coolant will transfer part of the heat to the first shell, the first shell can transfer the heat to the second shell, so cooling the first shell and the second shell is equivalent to indirectly cooling the coolant, thereby increasing the heat dissipation speed of the coolant, so that the coolant can absorb more heat from the heat-generating component and quickly cool the heat-generating component.

[0022] An embodiment of the present application provides a power conversion device, including the above-mentioned cooling device. The power conversion device has all the technical features and beneficial effects of the above-mentioned cooling device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A three-dimensional diagram of a cooling device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the internal structure of a cooling device provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the structure of a second side plate connected to a first shell provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the structure of the connection between the two second side panels and the first shell provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the structure of the connection between the three second side panels and the first shell provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the structure of a first accommodating cavity formed by a plurality of first side panels and a second shell provided in an embodiment of the present application;

[0030] Figure 7 A left side sectional view of a cooling device provided in an embodiment of the present application;

[0031] Figure 8 A rear cross-sectional view of a cooling device provided in an embodiment of the present application;

[0032] Figure 9 A three-dimensional diagram of the first housing and the liquid cooler provided in an embodiment of the present application;

[0033] Figure 10 Provided in the embodiments of this application Figure 9 A partial enlarged view of area A in the middle;

[0034] Figure 11 A three-dimensional diagram of another type of cooling device provided in an embodiment of the present application;

[0035] Figure 12 A left side view of another type of cooling device provided in an embodiment of the present application;

[0036] Figure 13 Provided in the embodiments of this application Figure 12 A partial enlarged view of area B in the middle;

[0037] Figure 14a A schematic diagram of the structure inside the second shell of another type of cooling device provided in an embodiment of the present application, wherein the airflow in the heat exchange channel flows from bottom to top;

[0038] Figure 14b A schematic diagram of the structure inside the second shell of another type of cooling device provided in an embodiment of the present application, wherein the airflow in the heat exchange channel flows from top to bottom;

[0039] Figure 15 A three-dimensional diagram of the heat exchange assembly and the connection portion provided in an embodiment of the present application;

[0040] Figure 16 Provided in the embodiments of this application Figure 15 A partial enlarged view of the middle C area;

[0041] Figure 17 A front cross-sectional view of another type of cooling device provided in an embodiment of the present application;

[0042] Figure 18 Provided in the embodiments of this application Figure 17 A partial enlarged view of the middle D area;

[0043] Figure markings: 10-shell assembly; 11-first shell; 111-first accommodating chamber; 112-first side plate; 12-second shell; 121-second accommodating chamber; 1211-placement chamber; 1212-air duct; 122-air inlet; 123-air outlet; 124-main body; 125-connecting part; 126-second side plate; 20-fan assembly; 30-liquid cooling assembly; 31-liquid inlet pipe; 32-liquid outlet pipe; 33-liquid cooler; 40-heat exchange assembly; 41-fin; 42-heat exchange channel; 43-air inlet end; 44-air outlet end; 45-heat exchange plate; 46-sealing plate; 47-gap; 50-heating assembly; X-air inlet direction. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0045] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, and at least one means one, two, or more, unless otherwise clearly and specifically defined.

[0046] As an introduction to the implementation of this application, a cooling device is introduced. In an immersion liquid-cooled energy storage system, a flowing coolant is used to completely immerse the heating component directly. The coolant contacts and flows with the surface of the heating component, and takes away the heat from the heating component during the flow. The coolant after absorbing the heat is then cooled by a liquid cooler, ultimately achieving the purpose of cooling the heating component. Currently, there are also designs that use natural cold sources to dissipate heat, that is, the coolant after absorbing heat is circulated to an external radiator for cooling through convection with the air. In this solution, only one of the air-cooled heat dissipation mode and the compression refrigeration heat dissipation mode can be operated, and they cannot be used in parallel to quickly cool the heating component.

[0047] In view of this, an embodiment of the present application provides a cooling device to overcome at least one of the above-mentioned technical problems.

[0048] See also Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 、 Figure 11 、 Figure 14a and Figure 14b In an embodiment of the present application, the cooling device is used to cool the heat-generating component 50 , and the cooling device includes a shell component 10 , a fan component 20 and a liquid cooling component 30 .

[0049] The shell assembly 10 includes a first shell 11 and a second shell 12 that are connected. The internal structures of the first shell 11 on the two forms of cooling devices in the figure are the same. The first shell 11 has a first accommodating cavity 111 for accommodating the heating component 50. One or more heating components 50 can be set in the first accommodating cavity 111 to provide a certain degree of protection for the heating component 50. Then, the heating component 50 is fixedly connected to the inner wall of the first shell 11 through a corresponding fixing structure to ensure the stability of the heating component 50 inside the first accommodating cavity 111. The second shell 12 is connected to the first shell 11, and the second shell 12 has a second accommodating cavity 121, as well as an air inlet 122 and an air outlet 123 connected to the second accommodating cavity 121. The second shell 12 is connected to the first shell 11. The heat on the first shell 11 can be transferred to the second shell 12 through heat transfer, thereby increasing the heat dissipation area of ​​the first shell 11 and improving the cooling efficiency of the heat-generating component 50 inside the first shell 11. The first shell 11 can be located inside the second accommodating cavity 121, and the ends of some of the first side panels 112 in the first shell 11 are connected to the surface of the second side panel 126 facing the first shell 11; or the first side panel 112 is indirectly connected to the second shell 12 through supporting legs. In this case, there is a gap between each first side panel 112 of the first shell 11 and the second side panel 126 facing it. In addition, the first shell 11 can also be located outside the second accommodating cavity 121 and connected to the second shell 12 by wall bonding or sharing a wall. The second shell 12 has an air inlet 122 and an air outlet 123, both of which are connected to the second accommodating cavity 121, so that the outside air can enter the second accommodating cavity 121 through the air inlet 122, and the air inside the second accommodating cavity 121 can be discharged through the air outlet 123. The flow of air can quickly take away the heat on the second shell 12, thereby improving the cooling efficiency of the first shell 11.

[0050] A fan assembly 20 is installed on the cooling device, which is used to draw air into the second accommodating chamber 121 through the air inlet 122 and discharge it through the air outlet 123. It is understandable that the fan assembly 20 can pass through a side wall of the second shell 12. Preferably, since the air outlet 123 is provided on one or more side walls of the second shell 12, the fan assembly 20 can pass through the corresponding air outlet 123 and be fixedly connected to the second shell 12, or the fan assembly 20 can be provided outside the second accommodating chamber 121 and provided corresponding to the air outlet 123. With this arrangement, the fan assembly 20 blows air directly to the outside without being blocked by other structures, and can directly discharge the air inside the second accommodating chamber 121 without weakening the air circulation speed, so that the circulation efficiency of the air inside and outside the second accommodating chamber 121 can be maintained at a high level. If the fan assembly 20 is located in the second accommodating chamber 121, preferably, the fan assembly 20 can be set toward the air outlet 123 and blow air, so that the air inside the second accommodating chamber 121 can be quickly discharged outside the device, and the outside air can also enter the second accommodating chamber 121 more quickly through the air inlet 122, thereby improving the circulation efficiency of the air inside and outside the second accommodating chamber 121.

[0051] The liquid cooling assembly 30 on the cooling device includes an inlet pipe 31 and a liquid outlet pipe 32 connected to the shell assembly 10. The inlet pipe 31 and the liquid outlet pipe 32 are both connected to the first accommodating chamber 111. The inlet pipe 31 can input coolant into the interior of the first accommodating chamber 111, so that the coolant immerses the multiple heating components 50 arranged in the first accommodating chamber 111. At the same time, the coolant in the first accommodating chamber 111 is discharged through the liquid outlet pipe 32, thereby achieving the purpose of making the coolant in the first accommodating chamber 111 flow. During the use of the heating components 50, a large amount of heat is generated. The flowing coolant immerses the heating components 50, and can have sufficient contact area with the heating components 50, so that the two can fully exchange heat. After absorbing the heat from the heating components 50, the temperature of the coolant will increase. The heated coolant can be discharged from the first accommodating chamber 111 through the liquid outlet pipe 32. The heated coolant is cooled by other structures on the liquid cooling assembly 30, and then the cooled coolant is re-introduced into the first accommodating chamber 111 through the inlet pipe 31. Thus, the cooling liquid circulation and cooling process is completed. During this process, the fan assembly 20 also works, so that the air inside and outside the second accommodating chamber 121 circulates. The fan assembly 20 allows the outside air to enter the interior of the second accommodating chamber 121 through the air inlet 122 and flow inside the second accommodating chamber 121. After the coolant in the first accommodating chamber 111 exchanges heat with the heating component 50, it also exchanges heat with the first shell 11, so that the temperature of the first shell 11 increases. At this time, since the heat on the first shell 11 will be transferred to the second shell 12, the air flows inside the second accommodating chamber 121 of the second shell 12, which can take away part of the heat on the first shell 11 and cool the first shell 11. The air with increased temperature can be discharged through the air outlet 123, and the outside air enters the second accommodating chamber 121 through the air inlet 122 again. This process actually indirectly cools the coolant and increases the heat dissipation rate of the coolant. The coolant can be cooled not only through the structure of the liquid cooling component 30 itself, but also through air cooling. Using both methods at the same time can increase the heat dissipation rate of the coolant, so that the coolant can absorb more heat from the heating component 50, quickly cool the heating component 50, and adjust its temperature to keep it within a suitable temperature range.

[0052] See also Figure 2 、 Figure 3 、 Figure 4 and Figure 5In some embodiments, the second shell 12 includes a plurality of second side panels 126, and the plurality of second side panels 126 enclose a second accommodating cavity 121. The first shell 11 is located in the second accommodating cavity 121 and is connected to at least one second side panel 126 of the second shell 12. When the first shell 11 is located inside the second accommodating cavity 121, the first shell 11 can be connected to one second side panel 126 of the second shell 12, or it can be connected to a plurality of second side panels 126 of the second shell 12, which can improve the efficiency of heat transfer between the first shell 11 and the second shell 12. The first shell 11 is located in the second accommodating cavity 121, and the fan assembly 20 makes the air inside the second accommodating cavity 121 have a higher flow rate, which can quickly take away the heat from the first shell 11 and better dissipate heat for the first shell 11. In actual applications, Figure 4 The up, down, left, and right in the figure are described as direction references, and the first shell 11 faces Figure 4 The right side wall on the middle right side can face the second shell 12 Figure 4 The right side wall on the middle right side is a common side wall, and the first shell 11 faces Figure 4 The lower wall of the middle lower side can face the second shell 12 Figure 4 The lower wall of the middle lower side is a common side wall, that is, the first shell 11 has only a left side wall, an upper wall, and front and rear side walls. These four side walls and the second shell 12 enclose the first accommodating cavity 111. Similarly, Figure 5 As shown, the first shell 11 faces Figure 4 The right side wall on the middle right side can face the second shell 12 Figure 4 The right side wall on the middle right side is a common side wall, and the first shell 11 faces Figure 4 The lower wall of the middle lower side can face the second shell 12 Figure 4 The lower wall of the middle lower side is a common side wall, and the first shell 11 faces Figure 4 The upper wall of the middle upper side can face the second shell 12 Figure 4 The upper wall of the middle upper side has a shared side wall. That is, the first housing 11 has only the left side wall, front side wall, and rear side wall. These three side walls, together with the second housing 12, enclose the first accommodating cavity 111. In this case, the vertical height of the first housing 11 is equal to the vertical height of the interior of the second accommodating cavity 121. Similarly, the first housing 11 and the second housing 12 may have other types of shared side walls, and the number of shared side walls can be set as needed.

[0053] At the same time, when the external ambient temperature is low, the cool air can be allowed to enter the interior of the second accommodating chamber 121 only through the fan assembly 20 to cool the first shell 11, thereby cooling the coolant in the first shell 11, without the need to cool the coolant through other structures on the liquid cooling assembly 30, which can reduce the energy consumption of the device and achieve the purpose of energy saving. When the external ambient temperature is high, the coolant can be cooled only through the liquid cooling assembly 30. The temperature of the outside air is higher than the temperature of the air in the second accommodating chamber 121, so there is no need to use the fan assembly 20 to circulate the air inside and outside the second accommodating chamber 121. At the same time, the second shell 12 is made of thermal insulation material and has good thermal insulation effect. It can weaken the heat exchange between the air inside and outside the second accommodating chamber 121 to a certain extent, so that the air temperature in the second accommodating chamber 121 is lower than the outside air temperature. Therefore, there is no need for air circulation. It is only necessary to cool the coolant through the liquid cooling assembly 30, which also reduces energy consumption and achieves the effect of energy saving. The first shell 11 can be a metal structural member with good thermal conductivity; the second shell 12 can be a structure made of thermal insulation materials such as epoxy resin and glass fiber reinforced plastic, which has good thermal insulation effect. At the same time, when the fan assembly 20 is not working, the air is a poor conductor of heat, and the air in the second accommodating cavity 121 can also be used as a thermal insulation layer, avoiding heat loss caused by direct contact between the first shell 11 and the external environment, and reducing thermal shock to the heating component 50 in the first shell 11. In addition, when the heating component 50 is a battery, it can also protect the battery at low temperatures and reduce the damage caused by low temperatures to the battery.

[0054] See also Figure 2 、 Figure 3 、 Figure 4 and Figure 6 In some embodiments, the first shell 11 includes a plurality of first side panels 112, which is a three-dimensional structure formed by splicing a plurality of first side panels 112. The plurality of first side panels 112 are connected and enclose a first accommodating cavity 111, and at least one first side panel 112 is connected to the second shell 12; or, the plurality of first side panels 112 and part of the second shell 12 are jointly enclosed to form the first accommodating cavity 111, and the plurality of first side panels 112 are connected to the second shell 12. When the first shell 11 is arranged inside the second accommodating cavity 121, the first shell 11 can be enclosed by the plurality of first side panels 112 to form the first accommodating cavity 111. The first accommodating cavity 111 can also be formed by the plurality of first side panels 112 and one or more second side panels 126 of the second shell 12. This method can reduce the number of first side panels 112, save the use of materials for the first shell 11, and reduce the production cost of the first shell 11. Figure 6 As shown, the first shell 11 faces Figure 4 The lower wall of the middle lower side can face the second shell 12 Figure 4The lower wall of the middle lower side is a common side wall, that is, the first shell 11 has only a left side wall, a right side wall, an upper wall, a front side wall and a rear side wall. These five side walls and the second shell 12 enclose the first accommodating cavity 111 .

[0055] The cooling device also includes at least one heat exchange assembly 40, which is located in the second accommodating chamber 121 and is connected to at least one first side plate 112. The heat exchange assembly 40 can be fixedly connected to one first side plate 112, or it can be simultaneously connected to multiple first side plates 112. The temperature on the first side plate 112 can be transferred to the heat exchange assembly 40 through heat conduction. By installing the heat exchange assembly 40 in the second accommodating chamber 121, the air flowing in the second accommodating chamber 121 can simultaneously exchange heat with the first housing 11 and the heat exchange assembly 40, thereby improving the efficiency of cooling the first side plate 112 on the first housing 11. Under the combined action of the fan assembly 20, the temperature of the air in the second accommodating chamber 121 increases, while the temperature of the first side plate 112 decreases. This allows the first side plate 112 to cool the coolant in the first accommodating chamber 111, further increasing the cooling rate of the coolant and making the coolant cool the heating component 50 at a faster rate.

[0056] See also Figure 2 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 11 、 Figure 14a 、 Figure 14b and Figure 15 In some embodiments, the cooling device includes at least one heat exchange assembly 40. Multiple heat exchange assemblies 40 can be connected to one first side plate 112, or can be connected to multiple first side plates 112 at the same time. The second shell 12 has multiple air inlets 122. The air inlet direction X of each air inlet 122 is toward at least one heat exchange assembly 40, so that part or all of the air entering the second accommodating cavity 121 through the air inlet 122 can be directly blown onto one or more heat exchange assemblies 40, effectively contacting the heat exchange assemblies 40 without being blocked by other structures. This allows the wind speed acting on the heat exchange assemblies 40 to be higher, which can remove more heat from the heat exchange assemblies 40 and improve the heat dissipation speed of the heat exchange assemblies 40.

[0057] See also Figure 9 and Figure 10In some embodiments, the heat exchange assembly 40 includes a plurality of fins 41 arranged at intervals, each fin 41 being connected to at least one first side plate 112. The fin 41 can be connected to one first side plate 112 or to multiple first side plates 112 at the same time. The shape of the fin 41 can be linear, L-shaped, U-shaped, or square-shaped. By connecting multiple fins 41 to the first side plate 112, the surface area of ​​the first side plate 112 for heat transfer is increased, thereby improving the heat exchange efficiency between the first side plate 112 and the air. At least a portion of each fin 41 extends along the air inlet direction X of the air inlet 122. This arrangement allows the outside air to preferentially contact the extended portion of the fin 41 when entering the second accommodating chamber 121, so that the air and the fin 41 can exchange heat more effectively, thereby improving the efficiency of the entire heat exchange process.

[0058] See also Figure 11 、 Figure 12 、 Figure 13 、 Figure 14a 、 Figure 14b 、 Figure 15 and Figure 16 In some embodiments, the heat exchange component 40 has a plurality of heat exchange channels 42, and the heat exchange channels 42 are respectively connected to the air inlet 122 and the air outlet 123. The heat exchange component 40 is connected to the first shell 11, and the heat on the first shell 11 can be transferred to the heat exchange component 40. The air entering the device through the air inlet 122 will enter the heat exchange channel 42, thereby contacting the structure on the heat exchange component 40 to achieve the purpose of heat exchange. The air after heat exchange is discharged through the air outlet 123. In order to improve the utilization rate of the cooling capacity in the air, the heat exchange channel 42 in the heat exchange component 40 is as follows Figure 15 In the case of the tubular heat exchange channel shown as having both ends open, the openings at both ends of the heat exchange channel 42 are respectively connected to the air inlet 122 and the air outlet 123. Air passing through the air inlet 122 enters the heat exchange channel 42, and the air in the heat exchange channel 42 is discharged through the air outlet 123. To reduce the cost of using the heat exchange assembly 40, when the heat exchange assembly 40 is a fin-type heat exchanger, the gap between two adjacent fins serves as the heat exchange channel 42. In this case, part of the air passing through the air inlet 122 enters the heat exchange channel 42. The other part enters the second accommodating cavity 121, exchanges heat with the fins and the first side plate 112 of the first shell 11, and is then discharged through the air outlet 123.

[0059] See also Figure 12 、 Figure 13 、 Figure 14a 、 Figure 14b 、 Figure 15 and Figure 16The second housing 12 includes a main body 124 and a connecting portion 125 extending into the main body 124. The internal space between the main body 124 and the connecting portion 125 forms a placement cavity 1211, which accommodates the first housing 11. The connecting portion 125 defines an air duct 1212 that communicates with the heat exchange channel 42. One of the air inlet 122 and the air outlet 123 is located at one end of the air duct 1212 on the connecting portion 125, and the other of the air inlet 122 and the air outlet 123 is located on the main body 124. Alternatively, the air inlet 122 and the air outlet 123 may be located at one end of the air duct 1212 on different connecting portions 125. It is understood that the second housing 12 can be composed of two parts: a main body 124 and a connecting portion 125. At least a portion of the connecting portion 125 extends into the interior of the main body 124 (the interior of the main body 124 refers to the space surrounded by the multiple second side panels 126). The connecting portion 125 and the main body 124 together form a placement cavity 1211 for placing the first housing 11. The connecting portion 125 is a hollow structure, and an air duct 1212 can be formed therein (the interior of the connecting portion 125 refers to the internal space formed by the hollow structure). In other words, the second accommodating cavity 121 is divided into the placement cavity 1211 and the air duct 1212.

[0060] In addition, the air inlet 122 can be provided on the main body 124 and communicate with the heat exchange channel 42, and the air outlet 123 can be provided on the connecting portion 125 and communicate with the air duct 1212. Since the heat exchange channel 42 and the air duct 1212 are connected, the air inlet 122, the heat exchange channel 42, the air duct 1212, and the air outlet 123 are connected in sequence. Alternatively, the air outlet 123 can be provided on the main body 124 and communicate with the heat exchange channel 42, and the air inlet 122 can be provided on the connecting portion 125 and communicate with the air duct 1212. In this way, the air inlet 122, the air duct 1212, the heat exchange channel 42, and the air outlet 123 are connected in sequence. Alternatively, a connection portion 125 is provided at the position of the air inlet 122 and the air outlet 123, the air inlet 122 is connected to the air duct 1212 of the corresponding connection portion 125, and the air outlet 123 is connected to the air duct 1212 of another connection portion 125, so that the air inlet 122, the air duct 1212, the heat exchange channel 42, the air duct 1212 and the air outlet 123 are connected in sequence. Figure 14aIf the air inlet 122 is located below the cooling device, the airflow will enter the placement chamber 1211 through the air inlet 122 under the action of the fan assembly 20. If a connection portion 125 is provided at the location of the air inlet 122, the airflow through the air inlet 122 will enter the air duct 1212 corresponding to the connection portion 125, then enter the second accommodating chamber 121 through the air duct 1212, exchange heat with the heat exchange assembly 40 in the second accommodating chamber 121, and then be discharged through the air outlet 123. If a heat exchange channel 42 is provided on the heat exchange assembly 40, the corresponding air duct 1212 is connected to the heat exchange channel 42, and the airflow through the corresponding air duct 1212 will enter the heat exchange channel 42 for heat exchange, and then be discharged from the air outlet 123 through the heat exchange channel 42. If a connection portion 125 is also provided at the location of the air outlet 123, the airflow after heat exchange will enter the air duct 1212 of the corresponding connection portion 125, and then be discharged from the air duct 1212 through the air outlet 123. At this time, the airflow in the heat exchange channel 42 flows from bottom to top. If the positions of the air inlet 122 and the air outlet 123 are swapped, as shown in FIG. Figure 14b As shown, the airflow flows in from the air inlet 122 and flows out from the air outlet 123. The flow direction in the heat exchange channel 42 is from top to bottom. The airflow process is similar to the above.

[0061] At the same time, in order to facilitate the flow of airflow, the fan assembly 20 needs to be installed on the cooling device. Preferably, the fan assembly 20 can be installed on the path where the airflow flows during heat exchange. The fan assembly 20 can be installed on at least one of the main body 124, the inner wall of the air inlet 122, the inner wall of the air duct 1212, the inner wall of the heat exchange channel 42, and the inner wall of the air outlet 123, which is conducive to increasing the flow rate of the airflow as much as possible, reducing the resistance during the flow of the airflow, and improving the heat dissipation effect.

[0062] See also Figure 12 、 Figure 13 、 Figure 14a 、 Figure 14b 、 Figure 15 and Figure 16In combination with the above embodiments, in some embodiments, the heat exchange assembly 40 has an air inlet end 43 and an air outlet end 44. The air inlet end 43 is sealedly connected to the main body 124 so that the heat exchange channel 42 communicates with the air inlet 122. This arrangement ensures that air entering from the air inlet 122 can directly and completely enter the heat exchange channel 42 for heat exchange, and does not enter other spaces within the device through the air inlet 122. The air outlet end 44 is sealedly connected to the connecting portion 125 so that the heat exchange channel 42 communicates with the air outlet 123 through the air duct 1212. This ensures that the air in the heat exchange channel 42 does not enter other spaces within the device and will completely enter the air duct 1212. The air in the air duct 1212 is completely discharged through the air outlet 123. One end of the heat exchange channel 42 communicates with the air duct 1212, and the other end of the heat exchange channel 42 communicates with the air inlet 122 of the second housing 12. During the air flow in the device, the air flows through the air inlet 122, the heat exchange channel 42, the air duct 1212 and the air outlet 123, and will not enter the placement cavity 1211. To a certain extent, most of the first shell 11 is isolated from the external environment, preventing dust, water stains or other foreign matter from entering the placement cavity 1211, thereby protecting the first shell 11 and improving the protection level of the device.

[0063] See also Figure 14a 、 Figure 14b 、 Figure 15 、 Figure 16 、 Figure 17 and Figure 18 In some embodiments, the heat exchange assembly 40 includes a plurality of heat exchange plates 45 and a plurality of sealing plates 46 that are spaced apart.

[0064] The cross-sections of the multiple heat exchange plates 45 are all U-shaped, with one end of the heat exchange plate 45 positioned toward the air inlet 122. The heat exchange plates 45 are connected to at least one first side plate 112 to form a heat exchange channel 42. The enclosed heat exchange channel 42 is a tubular heat exchange channel, allowing heat from the first side plate 112 to be transferred to the heat exchange plates 45. Air passing through the air inlet 122 can directly enter the heat exchange channel 42 within the heat exchange plates 45. Because the heat exchange channel 42 is formed by the first side plate 112 and the heat exchange plates 45, air flowing within the heat exchange channel 42 can simultaneously exchange heat with the heat exchange plates 45 and the first side plate 112. This allows the flowing air to remove heat from the first side plate 112 and the heat exchange plates 45, thereby reducing the temperature of the first housing 11 and achieving the desired cooling effect on the coolant. Multiple sealing plates 46 are provided at the air inlet end 43 of the heat exchange assembly 40. Each sealing plate 46 is connected between two adjacent heat exchange plates 45 to seal the gap 47 between the two adjacent heat exchange plates 45. The sealing plates 46 prevent air or foreign matter from entering the placement cavity 1211 through the gap 47 between the two adjacent heat exchange plates 45 via the air inlet 122. The sealing plates 46 isolate the placement cavity 1211 from the external environment, thereby enhancing the protection of the first housing 11.

[0065] See also Figure 15 、 Figure 16 、 Figure 17 and Figure 18 In some embodiments, each heat exchange channel 42 extends along the air inlet direction X of the air inlet 122. That is, the heat exchange channel 42 is linear and arranged along the air inlet direction X, and the channel's extension direction does not change. When air enters the heat exchange channel 42 through the air inlet 122, its flow direction does not change, and a high wind speed is maintained while flowing through the heat exchange channel 42. This improves the heat exchange efficiency between the air and the first side plate 112 and the heat exchange plate 45, causing the temperature on the first side plate 112 to drop more quickly, thereby more effectively cooling the coolant in the first accommodating chamber 111.

[0066] See also Figure 2 、 Figure 8 、 Figure 9 、 Figure 11 and Figure 12In some embodiments, the liquid cooling assembly 30 further includes a liquid cooler 33. The liquid cooler 33 can be disposed outside or inside the second housing 12 according to the position of the first housing 11 and connected to the liquid inlet pipe 31 and the liquid outlet pipe 32. The liquid inlet pipe 31 and the liquid outlet pipe 32 extend through the first housing 11 to communicate with the first accommodating chamber 111. The liquid cooler 33 can input coolant into the first accommodating chamber 111 through the liquid inlet pipe 31, and can also receive coolant discharged from the first accommodating chamber 111 by the liquid outlet pipe 32. At this time, the coolant increases in temperature after heat exchange with the heating component 50. The liquid cooler 33 can cool the coolant to reduce its temperature again before inputting it into the first accommodating chamber 111. The liquid cooler 33 allows the coolant to be repeatedly cooled, and can continuously cool the heating component 50.

[0067] See also Figure 3 In some embodiments, at least one second side panel 126 has an air inlet 122 or an air outlet 123, and at least one second side panel 126 is connected to a fan assembly 20, which is arranged corresponding to the air inlet 122 or the air outlet 123. The air inlet 122 or the air outlet 123 is arranged on one second side panel 126, or the air inlet 122 or the air outlet 123 is respectively arranged on multiple second side panels 126, and the fan assembly 20 is arranged at the corresponding air inlet 122 or the air outlet 123. The fan assembly 20 draws air into the second accommodating chamber 121 through the air inlet 122, and then discharges the air in the second accommodating chamber 121 through the air outlet 123, so that the air can quickly remove the heat from the second housing 12. When multiple fan assemblies 20 are provided, the air flow rate inside the second accommodating chamber 121 can be increased, thereby improving the heat dissipation efficiency.

[0068] A power conversion device includes any of the above-described cooling devices. This power conversion device possesses all the technical features and benefits of the above-described cooling devices, and will not be further elaborated upon here. The heat generating component 50 in the cooling device includes one or a combination of a battery, a circuit board, a capacitor, a rectifier module, and an inverter module.

[0069] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0070] The cooling device and power conversion equipment provided in the embodiments of the present application are introduced in detail above, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cooling device, characterized in that: Used to cool a heat generating component (50), the cooling device comprises: A housing assembly (10) comprises a first housing (11) and a second housing (12), wherein the first housing (11) has a first accommodating cavity (111) for accommodating the heating component (50), and the second housing (12) is connected to the first housing (11), and the second housing (12) has a second accommodating cavity (121), and an air inlet (122) and an air outlet (123) in communication with the second accommodating cavity (121); The fan assembly (20) draws air into the second accommodating chamber (121) through the air inlet (122) and discharges the air through the air outlet (123).

2. The cooling device according to claim 1, characterized in that The second shell (12) includes a plurality of second side plates (126), and the plurality of second side plates (126) enclose and form the second accommodating cavity (121). The first shell (11) is located in the second accommodating cavity (121) and is connected to at least one of the second side plates (126) of the second shell (12).

3. The cooling device according to claim 2, characterized in that The first shell (11) includes a plurality of first side panels (112), the plurality of first side panels (112) are connected to form the first accommodating cavity (111), and at least one of the first side panels (112) is connected to the second shell (12); or, the plurality of first side panels (112) and part of the second shell (12) are combined to form the first accommodating cavity (111), and the plurality of first side panels (112) are connected to the second shell (12).

4. The cooling device according to claim 1, characterized in that The cooling device comprises at least one heat exchange component (40), the heat exchange component (40) is located in the second accommodating cavity (121), and the heat exchange component (40) is connected to the first shell (11); The second shell (12) has a plurality of air inlets (122), and the air inlet direction (X) of each air inlet (122) is toward at least one heat exchange component (40).

5. The cooling device according to claim 4, characterized in that The heat exchange assembly (40) comprises a plurality of fins (41) arranged at intervals, and at least a portion of the fins (41) is extended along the air intake direction (X) of the air intake port (122).

6. The cooling device according to claim 4, characterized in that The heat exchange component (40) has a plurality of heat exchange channels (42), and two ends of the heat exchange channels (42) are respectively connected to the air inlet (122) and the air outlet (123).

7. The cooling device according to claim 6, characterized in that The heat exchange component (40) comprises: a plurality of heat exchange plates (45) arranged at intervals, one end of each heat exchange plate (45) being arranged toward the air inlet (122), and the heat exchange plates (45) being connected to the first shell (11) and enclosing the heat exchange channel (42); A plurality of sealing plates (46) are provided at the air inlet end (43) of the heat exchange assembly (40), and each sealing plate (46) is connected between two adjacent heat exchange plates (45) to seal the gap (47) between the two adjacent heat exchange plates (45).

8. The cooling device according to claim 6, characterized in that The second shell (12) comprises a main body (124) and at least one connecting portion (125) extending into the main body (124); the internal space between the main body (124) and the connecting portion (125) forms a placement cavity (1211), and the placement cavity (1211) accommodates the first shell (11); the connecting portion (125) has an air duct (1212) in communication with the heat exchange channel (42); One of the air inlet (122) and the air outlet (123) is arranged at one end of the air duct (1212) on the connecting portion (125), and the other of the air inlet (122) and the air outlet (123) is arranged on the main body (124); or, the air inlet (122) and the air outlet (123) are respectively arranged at one end of the air duct (1212) on different connecting portions (125).

9. The cooling device according to claim 8, characterized in that The fan assembly (20) is provided on at least one of the main body (124), the inner wall of the air inlet (122), the inner wall of the air duct (1212), the inner wall of the heat exchange channel (42), and the inner wall of the air outlet (123).

10. The cooling device according to claim 1, characterized in that The cooling device further comprises: a liquid cooling assembly (30), comprising a liquid inlet pipe (31) and a liquid outlet pipe (32) connected to the first shell (11), the liquid inlet pipe (31) and the liquid outlet pipe (32) being in communication with the first accommodating chamber (111), the liquid inlet pipe (31) being used to pass cooling liquid into the first accommodating chamber (111), and the liquid outlet pipe (32) being used to discharge the cooling liquid in the first accommodating chamber (111).

11. A power conversion device, characterized in that: Comprising the cooling device according to any one of claims 1 to 10, the heating component (50) comprises: one or a combination of a battery, a circuit board, a capacitor, a rectifier module, and an inverter module.

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