Power conversion module and power conversion device

Abstract

The utility model provides a power conversion module and power conversion equipment, and the power conversion module comprises a housing which is provided with an accommodation cavity; at least one electric device is arranged in the accommodating cavity; the radiator is arranged on the shell and located on the outer side of the containing cavity, the radiator makes contact with at least one electric device located in the containing cavity, the radiator is provided with an air channel, and the air channel is communicated with the outside; the heat dissipation piece is arranged in the containing cavity and connected with the shell, the heat dissipation piece is provided with a heat dissipation flow channel, the first end of the heat dissipation flow channel is communicated with the air channel, the second end of the heat dissipation flow channel is communicated with the outside, in the process that cold air flows through the heat dissipation flow channel, heat in the containing cavity can be taken away, and rapid heat dissipation of at least one electric device in the containing cavity is achieved; the heat dissipation efficiency is improved, the overall environment temperature of the containing cavity is reduced, the problem that at least one electric device in the containing cavity breaks down due to too high temperature rise is avoided, the volume power density of a product is effectively improved, and the service life of the power conversion module is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power conversion module technology, and more specifically, to a power conversion module and a power conversion device. Background Technology

[0002] Currently, power conversion devices in related technologies typically use a turbulence fan within a sealed cavity to dissipate heat from the electronic components inside. Specifically, the heat from the electronic components is first transferred to the air within the cavity, then to the walls of the sealed cavity, and finally, the outer walls of the sealed cavity transfer the heat to the external environment through natural convection and thermal radiation. However, this heat dissipation method has low efficiency, and if multiple overheated electronic components need cooling, the internal turbulence fan struggles to accommodate the heat dissipation of multiple components, resulting in cooling difficulties. Utility Model Content

[0003] The embodiments of this utility model are intended to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, a first aspect of the embodiments of this utility model provides a power conversion module.

[0005] A second aspect of the embodiments of this utility model provides a power conversion device.

[0006] In view of the above, according to a first aspect of the present invention, a power conversion module is provided, the power conversion module comprising: a housing having a receiving cavity; a plurality of electrical components, at least one of which is disposed within the receiving cavity; a heat sink disposed in the housing and located outside the receiving cavity, the heat sink being in contact with at least one electrical component located within the receiving cavity, the heat sink having an air duct communicating with the outside; and a heat dissipation component disposed within the receiving cavity and connected to the housing, the heat dissipation component having a heat dissipation channel, a first end of the heat dissipation channel communicating with the air duct, and a second end of the heat dissipation channel communicating with the outside.

[0007] The power conversion module provided in this embodiment includes a housing, multiple electrical components, a heat sink, and a heat dissipation element. Specifically, at least one of the multiple electrical components is disposed within a receiving cavity. Optionally, the multiple electrical components include a power device, a capacitor, a magnetic device, and an inductor, wherein the power device, capacitor, and magnetic device are disposed within the receiving cavity, and the inductor is disposed outside the receiving cavity. Optionally, all the power device, capacitor, magnetic device, and inductor are disposed within the receiving cavity. The specific arrangement can be determined according to actual needs.

[0008] The heat sink is disposed on the housing and is located outside the receiving cavity and in contact with at least one electrical device located in the receiving cavity. Optionally, the heat sink is in contact with a power device to dissipate heat from the power device.

[0009] The heat sink includes an air duct that connects to the outside. The heat sink component is housed within a cavity, with one end of the heat dissipation channel connected to the air duct and the other end connected to the outside. This means that cool air within the air duct can flow to the outside via the heat dissipation channel, essentially borrowing cool air from the external heat sink's air duct. Because the heat sink component is located within the cavity, the cool air flowing through the heat dissipation channel carries away heat from the high-temperature air within the cavity, enabling rapid heat dissipation for at least one electrical component. This improves heat dissipation efficiency, reduces the overall ambient temperature of the cavity, and prevents at least one electrical component from malfunctioning due to excessive temperature rise. Ultimately, this increases the product's volumetric power density and extends the lifespan of the power conversion module.

[0010] Moreover, a turbulence fan (first airflow generator) is generally installed in the air duct of the heat sink to improve the heat dissipation effect on the power devices. Therefore, when the turbulence fan is started, the airflow in the air duct enters the heat dissipation channel from the first end of the heat dissipation channel and flows out to the outside of the housing through the second end of the heat dissipation channel, thereby enabling rapid heat dissipation of the electrical devices in the housing cavity while ensuring high protection of the housing cavity.

[0011] Moreover, since the cool air in the heat dissipation channel is borrowed from the cool air in the external heat sink air duct, there is no need to install a separate turbulence component to guide the air in the heat dissipation channel, which improves heat dissipation efficiency and reduces the cost of the power conversion module.

[0012] Optionally, the power conversion module also includes a circuit board disposed within the receiving cavity, and at least one electrical component located within the receiving cavity is disposed on the circuit board.

[0013] Optionally, the power conversion module includes an energy storage DC-DC module (boost module).

[0014] In addition, the power conversion module provided by the above-mentioned technical solution of this utility model also has the following additional technical features:

[0015] In some technical solutions, the radiator may optionally include a first airflow generator disposed within the air duct; wherein the first airflow generator includes an air outlet connected to the air duct, and the first end of the heat dissipation air duct is configured to be close to the air outlet.

[0016] In this technical solution, the radiator is further defined as including a first airflow generator. Specifically, the first airflow generator is disposed in the air duct, and the airflow generated when the first airflow generator is working flows out from the air outlet.

[0017] The first end of the heat dissipation channel is close to the air outlet. In other words, the inlet of the heat dissipation channel is located downstream of the air outlet of the first airflow generator. This allows the airflow generated by the first airflow generator to quickly enter the heat dissipation channel and carry away the heat from the high-temperature air in the cavity during the airflow process. This enables rapid heat dissipation of at least one electrical component in the cavity, improves heat dissipation efficiency, and reduces the overall ambient temperature of the cavity.

[0018] Moreover, since the cool air in the heat dissipation channel is borrowed from the cool air in the external heat sink air duct, there is no need to install a separate turbulence component to guide the air in the heat dissipation channel, which improves heat dissipation efficiency and reduces the cost of the power conversion module.

[0019] Optionally, the first airflow generating element includes a fan or blower.

[0020] In some technical solutions, the power conversion module may optionally include a flow guide, which is disposed in the housing and located in the air duct. The flow guide and the outer wall of the housing enclose a flow channel, one end of the flow channel is connected to the first end of the heat dissipation channel, and the other end of the flow channel is connected to the air outlet.

[0021] In this technical solution, the power conversion module is further defined as including a flow guide. Specifically, the flow guide is disposed on the housing and located inside the air duct. The flow guide and the outer wall of the housing enclose a flow channel, and one end of the flow channel is connected to the first end of the heat dissipation channel, and the other end is connected to the air outlet. That is to say, when the first airflow generator is working, under the action of the flow channel, the airflow flowing out of the air outlet can flow as far as possible to the first end of the heat dissipation channel, that is, the airflow flowing out of the air outlet is forcibly introduced into the heat dissipation channel, thereby quickly removing the heat from the high-temperature air in the cavity, realizing the cooling of the cavity, improving the heat dissipation efficiency, and even if there are multiple electrical components in the cavity, the heat dissipation requirements can be met.

[0022] In some technical solutions, the flow guide may optionally include a first flow guide plate and a second flow guide plate, wherein the first flow guide plate is connected to the outer wall of the housing and is at least partially opposite to the air outlet, one end of the second flow guide plate is connected to the end of the first flow guide plate away from the housing, the other end of the second flow guide plate extends toward the side where the air outlet is located, at least a portion of the second flow guide plate is opposite to the first end of the heat dissipation channel, and the second flow guide plate, the first flow guide plate and the outer wall of the housing enclose and form a flow guide channel.

[0023] In this technical solution, the airflow guide includes a first airflow guide plate and a second airflow guide plate. Specifically, one end of the first airflow guide plate is connected to the outer wall of the housing, the other end of the first airflow guide plate is connected to one end of the second airflow guide plate, and the other end of the second airflow guide plate extends towards the side where the air outlet is located. It can be understood that the airflow guide has an L-shaped structure.

[0024] At least a portion of the first guide plate is opposite to the air outlet, and at least a portion of the second guide plate is opposite to the first end of the heat dissipation channel. In other words, the guide plate can block the airflow from the air outlet, so that the airflow from the air outlet can flow as far as possible to the first end of the heat dissipation channel under the action of the guide plate. That is, the airflow from the air outlet is forcibly introduced into the heat dissipation channel, which increases the airflow velocity in the heat dissipation channel and thus quickly removes the heat from the high-temperature air in the cavity, achieving cooling in the cavity and improving heat dissipation efficiency. Even if there are multiple electrical components in the cavity, the heat dissipation requirements can be met.

[0025] Optionally, the first guide vane and the second guide vane are an integral structure.

[0026] In some technical solutions, optionally, the first guide plate is higher than the first end of the heat dissipation channel along the height direction of the housing.

[0027] In this technical solution, the first guide plate is positioned higher than the first end of the heat dissipation channel, so that the airflow from the exhaust section can flow as far as possible to the first end of the heat dissipation channel under the action of the guide, thereby quickly carrying away the heat from the high-temperature air in the cavity and improving the heat dissipation effect.

[0028] In some technical solutions, the heat sink is optionally configured to be close to at least one electrical device located within the receiving cavity.

[0029] In this technical solution, the heat sink is positioned close to at least one electrical component within the receiving cavity. Optionally, the multiple electrical components include a first component, which generates more heat than the other components, i.e., the first component is the main heat-generating component. In other words, the heat sink can be flexibly arranged within the receiving cavity to be close to the main heat-generating component, thereby effectively reducing the thermal resistance of the path when the heat generated by the main heat-generating component is transferred to the outside, thus effectively reducing the temperature of the heat-generating component, achieving targeted heat dissipation, preventing the heat-generating component from malfunctioning due to excessive temperature rise, and helping to extend the service life of the power conversion module and improve the reliability of the power conversion module.

[0030] In some technical solutions, the heat sink may optionally be in contact with at least one electrical component located within the housing cavity.

[0031] In this technical solution, the heat sink is designed to contact at least one electrical component within the cavity. Optionally, the multiple electrical components include a first component, which generates more heat than the other components, i.e., the first component is the primary heat-generating component. In other words, the heat sink can be flexibly arranged within the cavity to contact the primary heat-generating component, thereby effectively improving the efficiency of heat transfer from the primary heat-generating component to the heat sink. As a result, the cool air flowing through the heat dissipation channel quickly carries away the heat transferred to the heat sink, improving the heat dissipation effect of at least one electrical component and meeting the heat dissipation requirements.

[0032] In some technical solutions, optionally, multiple electrical components include a first component located within a receiving cavity, and the power conversion module further includes a heat-conducting component disposed between the heat sink and the first component, and in contact with the heat sink and the first component respectively.

[0033] In this technical solution, multiple electrical components are defined, including a first component. Specifically, the first component is located within a receiving cavity, and a heat-conducting component is located between the heat sink and the first component. The two sides of the heat-conducting component are in contact with the heat sink and the first component, respectively. In other words, the first component contacts the heat sink through the heat-conducting component, thereby effectively improving the efficiency of heat transfer from the first component to the heat sink. As a result, the heat transferred to the heat sink is quickly carried away by the cold air flowing in the heat dissipation channel, improving the heat dissipation effect of the first component and meeting the heat dissipation requirements.

[0034] Optionally, the power of the first device is higher than that of the other electrical devices in the cavity, that is, the first device is the main heat-generating device.

[0035] In some technical solutions, the power conversion module may optionally include a plurality of first heat sinks, which are spaced apart on the heat sink.

[0036] In this technical solution, the power conversion module is further defined as including multiple first heat sinks. Specifically, the multiple first heat sinks are spaced apart on the heat sink, thereby significantly increasing the heat dissipation area, improving the heat dissipation capacity of the heat sink, and improving the heat dissipation effect of the power conversion module.

[0037] In some technical solutions, the housing may optionally include a housing body and a cover, wherein the heat sink is disposed on the housing body, the cover is connected to the housing body and surrounds the housing body to form a receiving cavity; the first end of the heat dissipation channel is disposed on the housing body, and the second end of the heat dissipation channel is disposed on at least one of the cover and the housing body.

[0038] In this technical solution, the housing is defined as including a housing body and a cover. Specifically, the radiator is disposed on the housing body, the cover is connected to the housing body, and the cover and the housing body enclose a receiving cavity. The first end of the heat dissipation channel is disposed on the housing body so as to introduce airflow from the radiator's air duct into the heat dissipation channel.

[0039] The second end of the heat dissipation channel is located on the cover. Alternatively, the second end of the heat dissipation channel is located on the housing body. Alternatively, the heat sink includes at least two heat dissipation channels, with the second end of at least one channel located on the cover and the second ends of the remaining channels located on the housing body. The specific configuration can be determined according to actual needs. It is understood that, compared to placing the second end of the heat dissipation channel on the cover, placing it on the housing body can improve the rapid dissipation of high-temperature air within the housing cavity while also enhancing the aesthetics of the power conversion module.

[0040] In some technical solutions, optionally, the second end of the heat dissipation channel is located on the shell body, the shell body is provided with a first mounting port and a second mounting port, the first end of the heat dissipation channel is located at the first mounting port and is sealed to the inner wall of the first mounting port, and the second end of the heat dissipation channel is located at the second mounting port and is sealed to the inner wall of the second mounting port.

[0041] In this technical solution, when the second end of the heat dissipation channel is located in the shell body, the shell body is provided with a first mounting port and a second mounting port. The first end of the heat dissipation channel is located at the first mounting port and is sealed to the inner wall of the first mounting port. Optionally, the first end of the heat dissipation channel is sealed to the inner wall of the first mounting port by a flange sealing ring, or the first end of the heat dissipation channel is bonded to the inner wall of the first mounting port, or the first end of the heat dissipation channel is welded to the inner wall of the first mounting port. The specific configuration can be determined according to actual needs.

[0042] The second end of the heat dissipation channel is located at the second mounting port and is sealed to the inner wall of the second mounting port. Optionally, the second end of the heat dissipation channel is sealed to the inner wall of the second mounting port by a flange sealing ring, or the second end of the heat dissipation channel is bonded to the inner wall of the second mounting port, or the second end of the heat dissipation channel is welded to the inner wall of the second mounting port. The specific configuration can be determined according to actual needs.

[0043] In other words, the connection between the heat sink and the housing body is sealed, thereby ensuring high protection of the housing cavity while enabling rapid heat dissipation of the electrical components inside the housing cavity, improving heat dissipation efficiency, reducing the overall ambient temperature of the housing cavity, and preventing at least one electrical component inside the housing cavity from malfunctioning due to excessive temperature rise. This effectively improves the volumetric power density of the product and extends the service life of the power conversion module.

[0044] In some technical solutions, the shell body may optionally include a bottom plate and multiple side plates, wherein the heat sink is disposed on the bottom plate, the first end of the heat dissipation channel is disposed on the bottom plate, the multiple side plates are connected end to end in sequence, one end of each side plate is connected to the bottom plate, and the other end of each side plate is connected to the cover, the multiple side plates, the bottom plate and the cover form a receiving cavity, and the second end of the heat dissipation channel is disposed on at least one side plate.

[0045] In this technical solution, the shell body is defined to include a bottom plate and multiple side plates. Specifically, the radiator is set on the bottom plate, and the first end of the heat dissipation channel is set on the bottom plate so as to introduce airflow from the radiator's air duct into the heat dissipation channel.

[0046] Multiple side plates are connected end to end in sequence, with one end of each side plate connected to the bottom plate and the other end of each side plate connected to the cover. The multiple side plates, the bottom plate, and the cover form a receiving cavity. The second end of the heat dissipation channel is located on at least one side plate. Compared to setting the second end of the heat dissipation channel on the cover, setting the second end of the heat dissipation channel on the shell body can improve the rapid heat dissipation of the high-temperature air in the receiving cavity while improving the aesthetics of the power conversion module.

[0047] In addition, since the first end of the heat dissipation channel is set on the bottom plate and the second end of the heat dissipation channel is set on at least one side plate, that is, the two ends of the heat dissipation channel are located on both sides of the shell, which helps to extend the length of the heat dissipation component in the cavity, remove more heat from the high-temperature air in the cavity, and improve the heat dissipation effect.

[0048] Optionally, the base plate and multiple side plates are an integral structure.

[0049] In some technical solutions, optionally, there are multiple heat sinks, which are arranged at intervals within the receiving cavity; and / or the heat sinks include aluminum-based composites; and / or the cross-sectional shape of the heat sinks is quadrilateral or circular.

[0050] In this technical solution, the number of heat dissipation components is limited to multiple. Specifically, multiple heat dissipation components are arranged at intervals in the cavity. It can be understood that each heat dissipation component includes at least one heat dissipation channel. During the process of cold air flowing through multiple heat dissipation channels, it can quickly remove the heat from the high-temperature air in the cavity, realize the rapid heat dissipation of at least one electrical component in the cavity, further improve the heat dissipation efficiency, and reduce the overall ambient temperature of the cavity.

[0051] The heat sink includes aluminum-based composite components, meaning the heat sink is made of aluminum alloy. It can be understood that aluminum-based materials have good thermal conductivity, which allows the cool air to flow through the heat sink and quickly remove the heat from the high-temperature air inside the cavity, thus meeting the heat dissipation needs of multiple electrical components.

[0052] The heat sink has a quadrilateral cross-sectional shape. Alternatively, it can have a square or rectangular cross-sectional shape. Or, it can have a circular cross-sectional shape. The specific shape can be determined based on actual needs.

[0053] In some technical solutions, the power conversion module may optionally include a second airflow generator, which is disposed within the receiving cavity.

[0054] In this technical solution, the power conversion module is further defined as including a second airflow generator. Specifically, the second airflow generator is disposed within the housing cavity. Optionally, the second airflow generator is disposed on the circuit board. That is, by disposing of the second airflow generator within the housing cavity, when the second airflow generator generates airflow, the heat generated by at least one electrical component is rapidly transferred to the air within the housing cavity. Since the heat sink is disposed within the housing cavity, the heat in the high-temperature air within the housing cavity can be carried away as the cold air flows through the heat dissipation channel, thereby achieving rapid heat dissipation of at least one electrical component within the housing cavity, improving heat dissipation efficiency, reducing the overall ambient temperature of the housing cavity, and preventing the failure of at least one electrical component within the housing cavity due to excessive temperature rise. This effectively improves the volumetric power density of the product and extends the service life of the power conversion module.

[0055] Optionally, the second airflow generator is configured to be close to at least one electrical device.

[0056] Optionally, the multiple electrical components also include a second component and a third component, where the power of the second component is greater than that of the third component, and the second airflow generator is configured to be close to the second component. That is, by placing the second airflow generator close to the second component, which generates more heat, the airflow generated by the second airflow generator can quickly carry away the heat generated by the second component into the air of the housing cavity, thereby improving the heat dissipation effect of the power conversion module.

[0057] Optionally, the second airflow generator includes a fan or blower.

[0058] In some technical solutions, optionally, the multiple electrical components also include a power device, which is disposed within the housing cavity. The heat sink also includes a housing, a heat dissipation substrate, and multiple second heat sinks. The housing is provided with an air inlet, an air outlet, and an air duct. Either the air inlet or the air outlet is connected to the air duct. The heat dissipation substrate is disposed on the housing and in contact with the power device. The multiple second heat sinks are spaced apart on the side of the heat dissipation substrate away from the power device and are located within the air duct. The first airflow generator also includes an air inlet, which is connected to the air inlet.

[0059] In this technical solution, the heat sink further includes a housing, a heat dissipation substrate, and multiple second heat sinks. Specifically, the housing is provided with an air inlet, an air outlet, and an air duct, with the air duct communicating with the air inlet and the air outlet, respectively. Power devices are disposed within the housing cavity; optionally, the power devices include transistors. The first airflow generator also includes an air inlet section, which communicates with the air inlet. Specifically, when the first airflow generator operates, airflow enters from the air inlet, flows through the air inlet and air outlet sections to the air duct, carrying away the heat transferred from the power devices to the multiple second heat sinks, achieving air-cooled heat dissipation of the power devices and meeting heat dissipation requirements.

[0060] Since the heat sink is located inside the cavity and the first end of the heat dissipation channel is close to the air outlet, that is, the inlet of the heat dissipation channel is located downstream of the air outlet of the first airflow generator, the airflow generated by the first airflow generator can quickly enter the heat dissipation channel and carry away the heat in the high-temperature air inside the cavity during the airflow process, thereby achieving rapid heat dissipation of at least one electrical component inside the cavity, improving heat dissipation efficiency, and reducing the overall ambient temperature of the cavity.

[0061] Moreover, since the cool air in the heat dissipation channel is borrowed from the cool air in the external heat sink air duct, there is no need to install a separate turbulence component to guide the air in the heat dissipation channel, which improves heat dissipation efficiency and reduces the cost of the power conversion module.

[0062] The heat sink also includes a heat dissipation substrate and multiple second heat sinks. Specifically, the heat dissipation substrate is in contact with the power device, and the multiple second heat sinks are disposed on the side of the heat dissipation substrate away from the power device, and are located within an airflow channel. In detail, the heat generated by the power device during operation is transferred to the multiple second heat sinks via the heat dissipation substrate to increase the heat dissipation area. Simultaneously, because a first airflow generator is disposed within the airflow channel, the airflow generated by the first airflow generator carries away the heat transferred to the multiple second heat sinks during its flow within the airflow channel, achieving air cooling of the power device, improving heat dissipation efficiency, and thus contributing to improved reliability of the power conversion module.

[0063] It is understood that the contact between the heat dissipation substrate and the power device can be direct or indirect.

[0064] Optionally, the power device includes a power semiconductor device.

[0065] In some technical solutions, the multiple electrical components may optionally include an inductor, which is disposed in the housing and located outside the receiving cavity.

[0066] In this technical solution, multiple electrical components are included, including inductors. Specifically, the inductors are mounted on the housing and located outside the housing cavity for self-cooling or air-cooling heat dissipation. This improves the heat dissipation effect of the inductors, reduces the probability of inductor failure, and enhances the reliability of the power conversion module.

[0067] Optionally, the inductor includes a power inductor.

[0068] According to a second aspect of this utility model, a power conversion device is provided, including a power conversion module as provided by any of the above technical solutions, and thus possesses all the beneficial technical effects of the power conversion module, which will not be repeated here.

[0069] In addition, the power conversion device provided by the above-described technical solution of this utility model also has the following additional technical features:

[0070] In some technical solutions, the power conversion equipment may optionally include an energy storage converter or a photovoltaic inverter.

[0071] In this technical solution, the power conversion device includes an energy storage converter, or the power conversion device includes a photovoltaic inverter.

[0072] Additional aspects and advantages of the present invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0073] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0074] Figure 1 One of the structural schematic diagrams of a power conversion module according to an embodiment of the present invention is shown;

[0075] Figure 2 A second schematic diagram of the structure of a power conversion module according to an embodiment of the present invention is shown;

[0076] Figure 3 A third schematic diagram of the structure of a power conversion module according to an embodiment of the present invention is shown;

[0077] Figure 4 The fourth schematic diagram shows the structure of a power conversion module according to an embodiment of the present invention;

[0078] Figure 5 Fifth schematic diagram of the structure of a power conversion module according to an embodiment of the present invention is shown;

[0079] Figure 6 A sixth schematic diagram of the structure of a power conversion module according to an embodiment of the present invention is shown;

[0080] Figure 7 A schematic diagram of the structure of a power conversion module according to another embodiment of the present invention is shown;

[0081] Figure 8 One of the structural schematic diagrams of a power conversion module according to another embodiment of the present invention is shown;

[0082] Figure 9 A second schematic diagram of the structure of a power conversion module according to another embodiment of the present invention is shown;

[0083] Figure 10 One of the structural schematic diagrams of a power conversion module according to yet another embodiment of the present invention is shown;

[0084] Figure 11 A second schematic diagram of the structure of a power conversion module according to yet another embodiment of the present invention is shown;

[0085] Figure 12 The third schematic diagram shows the structure of a power conversion module according to yet another embodiment of the present invention.

[0086] in, Figures 1 to 12 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0087] 100 Power conversion module, 110 Housing, 111 Receiving cavity, 112 Housing body, 113 Cover, 114 First mounting port, 115 Second mounting port, 116 Base plate, 117 Side plate, 120 Electrical components, 121 First component, 122 Power device, 123 Inductor, 130 Heat sink, 131 Air duct, 132 First airflow generator, 133 Air outlet, 134 Housing, 135 Air inlet, 136 Air outlet, 137 Air inlet, 138 Heat dissipation base plate, 139 Second heat sink, 140 Heat sink component, 141 Heat dissipation channel, 142 First end, 143 Second end, 150 Air guide component, 151 First air guide plate, 152 Second air guide plate, 160 Air guide channel, 170 Heat conduction component, 180 First heat sink, 210 Second airflow generator. Detailed Implementation

[0088] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0089] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0090] The following reference Figures 1 to 12 This invention describes a power conversion module 100 and a power conversion device provided according to some embodiments of the present invention.

[0091] In one embodiment according to this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, a power conversion module 100 is proposed. The power conversion module 100 includes: a housing 110, which has a receiving cavity 111; a plurality of electrical components 120, at least one of which is disposed in the receiving cavity 111; a heat sink 130, which is disposed in the housing 110 and located outside the receiving cavity 111, and the heat sink 130 is in contact with at least one electrical component 120 located in the receiving cavity 111, and the heat sink 130 has an air duct 131 that communicates with the outside; and a heat sink 140, which is disposed in the receiving cavity 111 and connected to the housing 110, and the heat sink 140 has a heat dissipation channel 141, the first end 142 of which communicates with the air duct 131, and the second end 143 of which communicates with the outside.

[0092] The power conversion module 100 provided in this embodiment of the utility model includes a housing 110, multiple electrical components 120, a heat sink 130, and a heat dissipation element 140. Specifically, at least one of the multiple electrical components 120 is disposed within a receiving cavity 111. Optionally, the multiple electrical components 120 include a power device 122, a capacitor, a magnetic device, and an inductor 123, wherein the power device 122, the capacitor, and the magnetic device are disposed within the receiving cavity 111, and the inductor 123 is disposed outside the receiving cavity 111. Optionally, the power device 122, the capacitor, the magnetic device, and the inductor 123 are all disposed within the receiving cavity 111. The specific arrangement can be determined according to actual needs.

[0093] Heat sink 130 is disposed on housing 110 and is located outside receiving cavity 111 and in contact with at least one electrical device 120 located in receiving cavity 111. Optionally, heat sink 130 is in contact with power device 122 to dissipate heat from power device 122.

[0094] The heat sink 130 includes an air duct 131 that connects to the outside. A heat sink 140 is disposed within the receiving cavity 111. The first end 142 of the heat sink 141 connects to the air duct 131, and the second end 143 connects to the outside. This means that cold air within the air duct 131 can flow to the outside via the heat sink 141, essentially borrowing the cold air from the external heat sink 130's air duct 131. Since the heat sink 140 is disposed within the receiving cavity 111, the cold air flowing through the heat sink 141 can carry away heat from the high-temperature air within the receiving cavity 111, achieving rapid heat dissipation for at least one electrical component 120 within the receiving cavity 111. This improves heat dissipation efficiency, reduces the overall ambient temperature of the receiving cavity 111, and prevents at least one electrical component 120 from malfunctioning due to excessive temperature rise. This effectively increases the product's volumetric power density and extends the service life of the power conversion module 100.

[0095] Furthermore, a turbulence fan (first airflow generator 132) is generally installed in the air duct 131 of the heat sink 130 to improve the heat dissipation effect on the power device 122. Therefore, when the turbulence fan is activated, the airflow in the air duct 131 enters the heat dissipation channel 141 from the first end 142 and flows out to the outside of the housing 110 through the second end 143 of the heat dissipation channel 141. This enables rapid heat dissipation of the electrical device 120 in the housing 111 while ensuring high protection of the housing 111.

[0096] Furthermore, since the cool air in the heat dissipation channel 141 is borrowed from the cool air in the air duct 131 of the external heat sink 130, there is no need to install a separate turbulence component for the heat dissipation channel 141, which improves heat dissipation efficiency and reduces the cost of the power conversion module 100.

[0097] Optionally, the power conversion module 100 also includes a circuit board disposed within the receiving cavity 111, and at least one electrical component 120 located within the receiving cavity 111 is disposed on the circuit board.

[0098] Optionally, the power conversion module 100 includes an energy storage DC-DC module (boost module).

[0099] like Figure 1 , Figure 9 , Figure 11 and Figure 12As shown, in some embodiments, optionally, the radiator 130 further includes a first airflow generator 132, which is disposed in the air duct 131; wherein, the first airflow generator 132 includes an air outlet 133, which is connected to the air duct 131, and the first end 142 of the heat dissipation channel 141 is configured to be close to the air outlet 133.

[0100] In this embodiment, the radiator 130 is further defined as including a first airflow generator 132. Specifically, the first airflow generator 132 is disposed in the air duct 131, and the airflow generated when the first airflow generator 132 is working flows out from the air outlet 133.

[0101] The first end 142 of the heat dissipation channel 141 is close to the air outlet 133. That is, the inlet of the heat dissipation channel 141 is located downstream of the air outlet of the first airflow generator 132, so that the airflow generated by the first airflow generator 132 can quickly enter the heat dissipation channel 141 and carry away the heat in the high temperature air in the receiving cavity 111 during the airflow process, thereby realizing the rapid heat dissipation of at least one electrical device 120 in the receiving cavity 111, improving the heat dissipation efficiency, and reducing the overall ambient temperature of the receiving cavity 111.

[0102] Furthermore, since the cold air in the heat dissipation channel 141 is borrowed from the cold air in the air duct 131 of the external heat sink 130, there is no need to install a separate turbulence component for the heat dissipation channel 141, which improves heat dissipation efficiency and reduces the cost of the power conversion module 100.

[0103] Optionally, the first airflow generator 132 includes a fan or blower.

[0104] like Figure 12 As shown, in some embodiments, optionally, the power conversion module 100 further includes a flow guide 150, which is disposed in the housing 110 and located in the air duct 131. The flow guide 150 and the outer wall of the housing 110 enclose a flow guide channel 160. One end of the flow guide channel 160 is connected to the first end 142 of the heat dissipation channel 141, and the other end of the flow guide channel 160 is connected to the air outlet 133.

[0105] In this embodiment, the power conversion module 100 is further defined as including a flow guide 150. Specifically, the flow guide 150 is disposed on the housing 110 and located inside the air duct 131. The flow guide 150 and the outer wall of the housing 110 enclose a flow guide channel 160. One end of the flow guide channel 160 is connected to the first end 142 of the heat dissipation channel 141, and the other end is connected to the air outlet 133. That is, when the first airflow generator 132 is working, under the action of the flow guide channel 160, the airflow flowing out of the air outlet 133 can flow as far as possible to the first end 142 of the heat dissipation channel 141. In other words, the airflow flowing out of the air outlet 133 is forcibly introduced into the heat dissipation channel 141, thereby quickly removing the heat from the high-temperature air in the housing 111, achieving cooling in the housing 111, and improving heat dissipation efficiency. Even if the housing 111 contains multiple electrical components 120, it can still meet the heat dissipation requirements.

[0106] like Figure 12 As shown, in some embodiments, optionally, the airflow guide 150 includes a first airflow guide plate 151 and a second airflow guide plate 152, wherein the first airflow guide plate 151 is connected to the outer wall of the housing 110 and is at least partially opposite to the air outlet 133, one end of the second airflow guide plate 152 is connected to the end of the first airflow guide plate 151 away from the housing 110, the other end of the second airflow guide plate 152 extends toward the side where the air outlet 133 is located, and at least a portion of the second airflow guide plate 152 is opposite to the first end 142 of the heat dissipation channel 141, and the second airflow guide plate 152, the first airflow guide plate 151 and the outer wall of the housing 110 enclose to form an airflow guide channel 160.

[0107] In this embodiment, the airflow guide 150 is defined as including a first airflow guide plate 151 and a second airflow guide plate 152. Specifically, one end of the first airflow guide plate 151 is connected to the outer wall of the housing 110, and the other end of the first airflow guide plate 151 is connected to one end of the second airflow guide plate 152. The other end of the second airflow guide plate 152 extends toward the side where the air outlet 133 is located. It can be understood that the airflow guide 150 has an L-shaped structure.

[0108] At least a portion of the first guide plate 151 is opposite to the air outlet 133, and at least a portion of the second guide plate 152 is opposite to the first end 142 of the heat dissipation channel 141. That is, the guide member 150 can block the airflow from the air outlet 133, so that the airflow from the air outlet 133 can flow as far as possible to the first end 142 of the heat dissipation channel 141 under the action of the guide member 150. In other words, the airflow from the air outlet 133 is forcibly introduced into the heat dissipation channel 141, increasing the airflow velocity in the heat dissipation channel 141, thereby quickly removing the heat from the high-temperature air in the receiving cavity 111, achieving cooling in the receiving cavity 111, and improving heat dissipation efficiency. Even if the receiving cavity 111 contains multiple electrical components 120, it can still meet the heat dissipation requirements.

[0109] Optionally, the first guide vane 151 and the second guide vane 152 are an integral structure.

[0110] like Figure 12 As shown, in some embodiments, optionally, along the height direction of the housing 110, the first guide plate 151 is higher than the first end 142 of the heat dissipation channel 141.

[0111] In this embodiment, the first guide plate 151 is positioned higher than the first end 142 of the heat dissipation channel 141, so that the airflow from the exhaust section 133 can flow as far as possible to the first end 142 of the heat dissipation channel 141 under the action of the guide member 150, thereby quickly removing the heat from the high-temperature air in the accommodating cavity 111 and improving the heat dissipation effect.

[0112] like Figure 7 and Figure 8 As shown, in some embodiments, the heat sink 140 is optionally configured to be close to at least one electrical device 120 located within the receiving cavity 111.

[0113] In this embodiment, the heat sink 140 is positioned close to at least one electrical device 120 within the receiving cavity 111. Optionally, the plurality of electrical devices 120 includes a first device 121, which generates more heat than the other electrical devices 120. That is, the first device 121 is the main heat-generating device. In other words, the heat sink 140 can be flexibly arranged within the receiving cavity 111 to be close to the main heat-generating device. This can effectively reduce the thermal resistance of the path when the heat generated by the main heat-generating device is transferred to the outside, thereby effectively reducing the temperature of the heat-generating device, achieving targeted heat dissipation, and preventing the heat-generating device from malfunctioning due to excessive temperature rise. This is beneficial for extending the service life of the power conversion module 100 and improving the reliability of the power conversion module 100.

[0114] like Figure 8 and Figure 9 As shown, in some embodiments, optionally, the heat sink 140 is in contact with at least one electrical device 120 located within the receiving cavity 111.

[0115] In this embodiment, the heat sink 140 is positioned to contact at least one electrical device 120 within the receiving cavity 111. Optionally, the plurality of electrical devices 120 includes a first device 121, which generates more heat than the other electrical devices 120, i.e., the first device 121 is the main heat-generating device. In other words, the heat sink 140 can be flexibly arranged within the receiving cavity 111 to contact the main heat-generating device, thereby effectively improving the efficiency of heat transfer from the main heat-generating device to the heat sink 140. As a result, the heat transferred to the heat sink 140 is quickly carried away by the cold air flowing through the heat dissipation channel 141, improving the heat dissipation effect of at least one electrical device 120 and meeting the heat dissipation requirements.

[0116] like Figure 8 and Figure 9 As shown, in some embodiments, optionally, the plurality of electrical devices 120 include a first device 121 located in the receiving cavity 111. The power conversion module 100 also includes a heat-conducting element 170 disposed between the heat sink 140 and the first device 121, and in contact with the heat sink 140 and the first device 121 respectively.

[0117] In this embodiment, a plurality of electrical devices 120 are defined, including a first device 121. Specifically, the first device 121 is located within the receiving cavity 111, and the heat-conducting element 170 is located between the heat sink 140 and the first device 121. The two sides of the heat-conducting element 170 are in contact with the heat sink 140 and the first device 121, respectively. That is, the first device 121 contacts the heat sink 140 through the heat-conducting element 170, thereby effectively improving the efficiency of heat transfer from the first device 121 to the heat sink 140. As a result, the heat transferred to the heat sink 140 is quickly carried away by the cold air flowing in the heat dissipation channel 141, thereby improving the heat dissipation effect of the first device 121 and meeting the heat dissipation requirements.

[0118] Optionally, the power of the first device 121 is higher than that of the other electrical devices 120 in the receiving cavity 111, that is, the first device 121 is the main heat-generating device.

[0119] like Figure 10 , Figure 11 and Figure 12 As shown, in some embodiments, the power conversion module 100 may optionally include a plurality of first heat sinks 180, which are spaced apart on the heat sink 140.

[0120] In this embodiment, the power conversion module 100 is further defined as including a plurality of first heat sinks 180. Specifically, the plurality of first heat sinks 180 are spaced apart on the heat sink 140, thereby significantly increasing the heat dissipation area, improving the heat dissipation capacity of the heat sink 140, and improving the heat dissipation effect of the power conversion module 100.

[0121] like Figure 1 , Figure 2 , Figure 10 and Figure 11 As shown, in some embodiments, optionally, the housing 110 includes a housing body 112 and a cover 113, wherein the heat sink 130 is disposed on the housing body 112, the cover 113 is connected to the housing body 112 and surrounds the housing body 112 to form a receiving cavity 111; the first end 142 of the heat dissipation channel 141 is disposed on the housing body 112, and the second end 143 of the heat dissipation channel 141 is disposed on at least one of the cover 113 and the housing body 112.

[0122] In this embodiment, the housing 110 is defined as including a housing body 112 and a cover 113. Specifically, the heat sink 130 is disposed on the housing body 112, the cover 113 is connected to the housing body 112, and the cover 113 and the housing body 112 enclose a receiving cavity 111. The first end 142 of the heat dissipation channel 141 is disposed on the housing body 112 so as to introduce airflow from the air duct 131 of the heat sink 130 into the heat dissipation channel 141.

[0123] The second end 143 of the heat dissipation channel 141 is disposed on the cover 113. Alternatively, the second end 143 of the heat dissipation channel 141 is disposed on the housing body 112. Alternatively, the heat sink 140 includes at least two heat dissipation channels 141, wherein the second end 143 of at least one heat dissipation channel 141 is disposed on the cover 113, and the second ends 143 of the remaining heat dissipation channels 141 are disposed on the housing body 112. The specific configuration can be adjusted according to actual needs. It is understood that, compared to disposing the second end 143 of the heat dissipation channel 141 on the cover 113, disposing the second end 143 of the heat dissipation channel 141 on the housing body 112 can improve the rapid heat dissipation of the high-temperature air within the receiving cavity 111 while also enhancing the aesthetics of the power conversion module 100.

[0124] like Figure 1 As shown, in some embodiments, optionally, the second end 143 of the heat dissipation channel 141 is disposed on the shell body 112, the shell body 112 is provided with a first mounting port 114 and a second mounting port 115, the first end 142 of the heat dissipation channel 141 is disposed at the first mounting port 114 and is sealed to the inner wall of the first mounting port 114, and the second end 143 of the heat dissipation channel 141 is disposed at the second mounting port 115 and is sealed to the inner wall of the second mounting port 115.

[0125] In this embodiment, when the second end 143 of the heat dissipation channel 141 is located on the shell body 112, the shell body 112 is provided with a first mounting port 114 and a second mounting port 115. The first end 142 of the heat dissipation channel 141 is located at the first mounting port 114 and is sealed to the inner wall of the first mounting port 114. Optionally, the first end 142 of the heat dissipation channel 141 is sealed to the inner wall of the first mounting port 114 by a flange sealing ring, or the first end 142 of the heat dissipation channel 141 is bonded to the inner wall of the first mounting port 114, or the first end 142 of the heat dissipation channel 141 is welded to the inner wall of the first mounting port 114. The specific configuration can be adjusted according to actual needs.

[0126] The second end 143 of the heat dissipation channel 141 is located at the second mounting port 115 and is sealed to the inner wall of the second mounting port 115. Optionally, the second end 143 of the heat dissipation channel 141 is sealed to the inner wall of the second mounting port 115 by a flange sealing ring, or the second end 143 of the heat dissipation channel 141 is bonded to the inner wall of the second mounting port 115, or the second end 143 of the heat dissipation channel 141 is welded to the inner wall of the second mounting port 115. The specific configuration can be determined according to actual needs.

[0127] In other words, the connection between the heat sink 140 and the housing body 112 is sealed, thereby ensuring high protection of the housing cavity 111 while achieving rapid heat dissipation of the electrical components 120 inside the housing cavity 111, improving heat dissipation efficiency, reducing the overall ambient temperature of the housing cavity 111, and preventing at least one electrical component 120 inside the housing cavity 111 from malfunctioning due to excessive temperature rise. This effectively improves the volumetric power density of the product and extends the service life of the power conversion module 100.

[0128] like Figure 4 As shown, in some embodiments, optionally, the shell body 112 includes a bottom plate 116 and a plurality of side plates 117, wherein the heat sink 130 is disposed on the bottom plate 116, the first end 142 of the heat dissipation channel 141 is disposed on the bottom plate 116, the plurality of side plates 117 are connected end to end in sequence, one end of each side plate 117 is connected to the bottom plate 116, and the other end of each side plate 117 is connected to the cover 113, the plurality of side plates 117, the bottom plate 116 and the cover 113 enclose to form a receiving cavity 111, and the second end 143 of the heat dissipation channel 141 is disposed on at least one side plate 117.

[0129] In this embodiment, the shell body 112 is defined to include a bottom plate 116 and a plurality of side plates 117. Specifically, the radiator 130 is disposed on the bottom plate 116, and the first end 142 of the heat dissipation channel 141 is disposed on the bottom plate 116 so as to introduce airflow from the air duct 131 of the radiator 130 into the heat dissipation channel 141.

[0130] Multiple side plates 117 are connected end to end in sequence, with one end of each side plate 117 connected to the bottom plate 116 and the other end of each side plate 117 connected to the cover 113. The multiple side plates 117, the bottom plate 116 and the cover 113 enclose and form a receiving cavity 111. The second end 143 of the heat dissipation channel 141 is provided on at least one side plate 117. Compared with providing the second end 143 of the heat dissipation channel 141 on the cover 113, providing the second end 143 of the heat dissipation channel 141 on the shell body 112 can improve the rapid heat dissipation of the high temperature air in the receiving cavity 111 while improving the aesthetics of the power conversion module 100.

[0131] Furthermore, since the first end 142 of the heat dissipation channel 141 is located on the base plate 116 and the second end 143 of the heat dissipation channel 141 is located on at least one side plate 117, that is, the two ends of the heat dissipation channel 141 are located on both sides of the housing 110, which is beneficial to extend the length of the heat dissipation component 140 in the receiving cavity 111, remove more heat from the high-temperature air in the receiving cavity 111, and improve the heat dissipation effect.

[0132] Optionally, the base plate 116 and the multiple side plates 117 are an integral structure.

[0133] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in some embodiments, optionally, there are multiple heat sinks 140, which are spaced apart within the receiving cavity 111; and / or the heat sinks 140 include aluminum-based composites; and / or the cross-sectional shape of the heat sinks 140 is quadrilateral or circular.

[0134] In this embodiment, the number of heat sinks 140 is limited to a plurality. Specifically, the plurality of heat sinks 140 are arranged at intervals in the receiving cavity 111. It is understood that each heat sink 140 includes at least one heat dissipation channel 141. During the flow of cold air through the plurality of heat dissipation channels 141, the heat in the high-temperature air in the receiving cavity 111 can be quickly removed, thereby achieving rapid heat dissipation of at least one electrical device 120 in the receiving cavity 111, further improving heat dissipation efficiency and reducing the overall ambient temperature of the receiving cavity 111.

[0135] The heat sink 140 includes an aluminum-based composite component, that is, the heat sink 140 is an aluminum alloy component. It can be understood that the aluminum-based material has good thermal conductivity, so that when the cold air flows in the heat dissipation channel 141, it can quickly remove the heat from the high-temperature air in the receiving cavity 111 through the heat sink 140, thereby meeting the heat dissipation needs of multiple electrical components 120.

[0136] The heat sink 140 has a quadrilateral cross-sectional shape. Optionally, the heat sink 140 may have a square or rectangular cross-sectional shape. Alternatively, the heat sink 140 may have a circular cross-sectional shape. The specific shape can be determined according to actual needs.

[0137] like Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, in some embodiments, the power conversion module 100 may optionally include a second airflow generator 210, which is disposed within the receiving cavity 111.

[0138] In this embodiment, the power conversion module 100 further includes a second airflow generator 210. Specifically, the second airflow generator 210 is disposed within the receiving cavity 111. Optionally, the second airflow generator 210 is disposed on a circuit board. That is, the second airflow generator 210 is disposed within the receiving cavity 111 so that when the second airflow generator 210 generates airflow, the heat generated by at least one electrical component 120 is quickly transferred to the air in the receiving cavity 111. Since the heat sink 140 is disposed within the receiving cavity 111, the heat in the high-temperature air within the receiving cavity 111 can be carried away during the flow of cold air through the heat dissipation channel 141, thereby achieving rapid heat dissipation of at least one electrical component 120 within the receiving cavity 111, improving heat dissipation efficiency, reducing the overall ambient temperature of the receiving cavity 111, and preventing the failure of at least one electrical component 120 within the receiving cavity 111 due to excessive temperature rise. This effectively improves the volumetric power density of the product and extends the service life of the power conversion module 100.

[0139] Optionally, the second airflow generator 210 is configured to be close to at least one electrical device 120.

[0140] Optionally, the plurality of electrical devices 120 also includes a second device and a third device, wherein the power of the second device is greater than that of the third device, and the second airflow generator 210 is configured to be close to the second device. That is, by placing the second airflow generator 210 close to the second device that generates more heat, the airflow generated by the second airflow generator 210 can quickly carry away the heat generated by the second device into the air of the receiving cavity 111, thereby improving the heat dissipation effect of the power conversion module 100.

[0141] Optionally, the second airflow generator 210 includes a fan or blower.

[0142] like Figure 1 , Figure 4 , Figure 9 , Figure 11 and Figure 12 As shown, in some embodiments, optionally, the plurality of electrical devices 120 further include a power device 122, which is disposed within the receiving cavity 111. The heat sink 130 further includes a housing 134, a heat dissipation substrate 138, and a plurality of second heat sinks 139. The housing 134 is provided with an air inlet 135, an air outlet 136, and an air duct 131. Either the air inlet 135 or the air outlet 136 is connected to the air duct 131. The heat dissipation substrate 138 is disposed on the housing 134 and is in contact with the power device 122. The plurality of second heat sinks 139 are spaced apart on the side of the heat dissipation substrate 138 away from the power device 122 and are located within the air duct 131. The first airflow generator 132 further includes an air inlet 137, which is connected to the air inlet 135.

[0143] In this embodiment, the heat sink 130 further includes a housing 134, a heat dissipation substrate 138, and a plurality of second heat sinks 139. Specifically, the housing 134 is provided with an air inlet 135, an air outlet 136, and an air duct 131, which communicates with the air inlet 135 and the air outlet 136, respectively. The power device 122 is disposed within the receiving cavity 111. Optionally, the power device 122 includes a transistor. The first airflow generator 132 further includes an air inlet 137, which communicates with the air inlet 135. Specifically, when the first airflow generator 132 is working, airflow can enter from the air inlet 135, flow through the air inlet 137 and the air outlet 133 to the air duct 131, and carry away the heat transferred from the power device 122 to the plurality of second heat sinks 139, thereby achieving air cooling of the power device 122 and meeting the heat dissipation requirements.

[0144] Since the heat sink 140 is located inside the receiving cavity 111 and the first end 142 of the heat dissipation channel 141 is close to the air outlet 133, that is, the inlet of the heat dissipation channel 141 is located downstream of the air outlet of the first airflow generator 132, the airflow generated by the first airflow generator 132 can quickly enter the heat dissipation channel 141 and carry away the heat in the high-temperature air inside the receiving cavity 111 during the airflow process, thereby achieving rapid heat dissipation of at least one electrical component 120 inside the receiving cavity 111, improving heat dissipation efficiency, and reducing the overall ambient temperature of the receiving cavity 111.

[0145] Furthermore, since the cold air in the heat dissipation channel 141 is borrowed from the cold air in the air duct 131 of the external heat sink 130, there is no need to install a separate turbulence component for the heat dissipation channel 141, which improves heat dissipation efficiency and reduces the cost of the power conversion module 100.

[0146] The heat sink 130 also includes a heat sink substrate 138 and a plurality of second heat sinks 139. Specifically, the heat sink substrate 138 is in contact with the power device 122, and the plurality of second heat sinks 139 are disposed on the side of the heat sink substrate 138 away from the power device 122, and the plurality of second heat sinks 139 are located within the air duct 131. In detail, the heat generated by the power device 122 during operation is transferred to the plurality of second heat sinks 139 via the heat sink substrate 138 to increase the heat dissipation area. At the same time, since a first airflow generator 132 is provided in the air duct 131, the airflow generated by the first airflow generator 132 can carry away the heat transferred to the plurality of second heat sinks 139 during the flow of the air duct 131, thereby realizing the air cooling of the power device 122, improving the heat dissipation efficiency, and thus helping to improve the reliability of the power conversion module 100.

[0147] It is understood that the contact between the heat dissipation substrate 138 and the power device 122 can be direct or indirect.

[0148] Optionally, the power device 122 includes a power semiconductor device.

[0149] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, the plurality of electrical devices 120 further include an inductor 123, which is disposed in the housing 110 and located outside the receiving cavity 111.

[0150] In this embodiment, the multiple electrical components 120 include an inductor 123. Specifically, the inductor 123 is disposed on the housing 110 and located outside the receiving cavity 111. It is self-cooled or air-cooled for heat dissipation, which helps to improve the heat dissipation effect of the inductor 123, reduce the probability of failure of the inductor 123, and improve the reliability of the power conversion module 100.

[0151] Optionally, the inductor 123 includes a power inductor.

[0152] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, the housing (shell body 112) and the cover (cover body 113) together form a sealed cavity (accommodation cavity 111). A heat sink 130 and / or an external fan (first airflow generator 132) and an external air duct (air duct 131) are usually provided outside the sealed cavity (accommodation cavity 111) to perform self-cooling or air-cooling heat dissipation on the power semiconductor device (power device 122).

[0153] The power inductor (inductor device 123) can be placed outside the sealed cavity (accommodation cavity 111) for self-cooling or air-cooling, or it can be placed inside the sealed cavity (accommodation cavity 111), without restriction.

[0154] The sealed cavity (accommodation cavity 111) typically contains multiple heat-generating devices (electrical devices 120) such as electronic components, capacitors, and magnetic components. An internal fan (second airflow generator 210) rapidly diffuses the heat from each heat-generating device (electrical device 120) into the air within the sealed cavity (accommodation cavity 111) through internal turbulence. The heat is then transferred to the casing (shell body 112) and the cover (cover body 113). The casing (shell body 112) and the cover (cover body 113) transfer the heat to the external environment through thermal convection and thermal radiation, thereby achieving cooling of the heat-generating devices (electrical devices 120) inside the sealed cavity (accommodation cavity 111).

[0155] A rapid heat dissipation component (heat dissipation element 140) is provided inside the sealed cavity (accommodation cavity 111). The rapid heat dissipation component (heat dissipation element 140) includes at least one heat dissipation pipe (heat dissipation channel 141), which can be various cross-sectional shapes such as square, rectangular, and circular.

[0156] The heat dissipation duct (heat dissipation channel 141) has at least one air inlet (first end 142) and at least one air outlet (second end 143). The air inlet (first end 142) is located downstream of the exhaust of the external fan (first airflow generator 132), and the air outlet (second end 143) can be located at any position on the casing (casing body 112) or the cover (cover 113). The air inlet (first end 142) and the air outlet (second end 143) can be fixed by means of flange sealing ring sealing, adhesive sealing, welding sealing, etc., without limitation.

[0157] The cool air generated by the external fan (first airflow generator 132) can be forced through the air inlet (first end 142) into the heat dissipation pipe (heat dissipation channel 141) by utilizing natural pressure difference or by setting up an air duct (air guide 150), and then flow out through the air outlet (second end 143). When the cool air flows through the heat dissipation pipe (heat dissipation channel 141), it can quickly remove the heat from the high-temperature air in the sealed cavity (accommodation cavity 111), thereby achieving cooling of the sealed cavity (accommodation cavity 111).

[0158] like Figure 8 and Figure 9 As shown, the heat-generating device (first device 121) can be directly close to the fast heat dissipation component (heat sink 140) or be attached to the fast heat dissipation component (heat sink 140) through an interface material (thermal conductive component 170), thereby achieving rapid cooling of the heat-generating device (first device 121).

[0159] like Figure 7 As shown, the heat dissipation pipes (heat dissipation channels 141) in the rapid heat dissipation component (heat dissipation component 140) can be flexibly bent according to the internal component layout, so as to get close to the key heat dissipation components and perform targeted heat dissipation.

[0160] like Figure 10 , Figure 11 and Figure 12 As shown, fins (first heat sink 180) can also be provided on the heat dissipation pipe (heat dissipation flow channel 141) in the rapid heat dissipation component (heat sink 140) to increase the heat dissipation area and improve the heat dissipation capacity.

[0161] like Figure 12 As shown, in the external air duct (air duct 131), a local air duct (guide 150) (or baffle) can be set at the air inlet (first end 142) of the heat dissipation pipe (heat dissipation flow channel 141) to force the cold air generated by the external fan (first airflow generator 132) to flow into the heat dissipation pipe (heat dissipation flow channel 141), thereby increasing the airflow speed in the heat dissipation pipe (heat dissipation flow channel 141) and improving the heat dissipation effect.

[0162] According to a second aspect of the present invention, a power conversion device is provided, including a power conversion module 100 as provided in any of the above technical solutions, and thus possesses all the beneficial technical effects of the power conversion module 100, which will not be repeated here.

[0163] Specifically, the power conversion module 100 includes a housing 110, multiple electrical components 120, a heat sink 130, and a heat dissipation element 140. More specifically, at least one of the multiple electrical components 120 is disposed within the receiving cavity 111. Optionally, the multiple electrical components 120 include a power device 122, a capacitor, a magnetic device, and an inductor 123, wherein the power device 122, capacitor, and magnetic device are disposed within the receiving cavity 111, and the inductor 123 is disposed outside the receiving cavity 111. Optionally, the power device 122, capacitor, magnetic device, and inductor 123 are all disposed within the receiving cavity 111. The specific configuration can be adjusted according to actual needs.

[0164] Heat sink 130 is disposed on housing 110 and is located outside receiving cavity 111 and in contact with at least one electrical device 120 located in receiving cavity 111. Optionally, heat sink 130 is in contact with power device 122 to dissipate heat from power device 122.

[0165] The heat sink 130 includes an air duct 131 that connects to the outside. A heat sink 140 is disposed within the receiving cavity 111. The first end 142 of the heat sink 141 connects to the air duct 131, and the second end 143 connects to the outside. This means that cold air within the air duct 131 can flow to the outside via the heat sink 141, essentially borrowing the cold air from the external heat sink 130's air duct 131. Since the heat sink 140 is disposed within the receiving cavity 111, the cold air flowing through the heat sink 141 can carry away heat from the high-temperature air within the receiving cavity 111, achieving rapid heat dissipation for at least one electrical component 120 within the receiving cavity 111. This improves heat dissipation efficiency, reduces the overall ambient temperature of the receiving cavity 111, and prevents at least one electrical component 120 from malfunctioning due to excessive temperature rise. This effectively increases the product's volumetric power density and extends the service life of the power conversion module 100.

[0166] Furthermore, a baffle fan (first airflow generator 132) is generally installed in the air duct 131 of the heat sink 130 to improve the heat dissipation effect on the power device 122. Therefore, when the baffle fan is activated, the airflow in the air duct 131 enters the heat dissipation channel 141 from the first end 142 and flows out to the outside of the housing 110 through the second end 143 of the heat dissipation channel 141. This allows for rapid heat dissipation of the electrical device 120 inside the housing 111 while ensuring high protection of the housing 111. In addition, since the cold air in the heat dissipation channel 141 is borrowed from the cold air in the air duct 131 of the external heat sink 130, there is no need to install a separate baffle component for the airflow in the heat dissipation channel 141. This improves the heat dissipation efficiency and reduces the cost of the power conversion module 100.

[0167] In some embodiments, the power conversion device may optionally include an energy storage converter or a photovoltaic inverter.

[0168] In this embodiment, the power conversion device includes an energy storage converter, or the power conversion device includes a photovoltaic inverter.

[0169] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0170] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0171] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A power conversion module, characterized in that, include: The housing has a receiving cavity; Multiple electrical components, at least one of the electrical components being disposed within the receiving cavity; A heat sink is disposed on the housing and located outside the receiving cavity. The heat sink is in contact with at least one of the electrical components located in the receiving cavity. The heat sink is provided with an air duct that communicates with the outside. A heat sink is disposed within the receiving cavity and connected to the housing. The heat sink is provided with a heat dissipation channel. The first end of the heat dissipation channel is connected to the air duct, and the second end of the heat dissipation channel is connected to the outside.

2. The power conversion module according to claim 1, characterized in that, The radiator further includes a first airflow generator, which is disposed within the air duct; The first airflow generator includes an air outlet, which is connected to the air duct, and the first end of the heat dissipation duct is configured to be close to the air outlet.

3. The power conversion module according to claim 2, characterized in that, Also includes: A flow guide is disposed in the housing and located within the air duct. The flow guide and the outer wall of the housing enclose a flow guide channel. One end of the flow guide channel is connected to the first end of the heat dissipation channel, and the other end of the flow guide channel is connected to the air outlet.

4. The power conversion module according to claim 3, characterized in that, The flow guide includes: The first guide vane is connected to the outer wall of the housing and is at least partially opposite to the air outlet. The second guide plate has one end connected to the end of the first guide plate away from the housing, and the other end of the second guide plate extends toward the side where the air outlet is located. At least part of the second guide plate is opposite to the first end of the heat dissipation channel. The second guide plate, the first guide plate and the outer wall of the housing enclose the guide channel.

5. The power conversion module according to claim 4, characterized in that, Along the height direction of the housing, the first guide plate is higher than the first end of the heat dissipation channel.

6. The power conversion module according to any one of claims 1 to 5, characterized in that, The heat sink is configured to be located close to at least one of the electrical devices located within the receiving cavity.

7. The power conversion module according to any one of claims 1 to 5, characterized in that, The heat sink is in contact with at least one of the electrical components located within the receiving cavity.

8. The power conversion module according to any one of claims 1 to 5, characterized in that, The plurality of electrical devices include a first device located within the receiving cavity, and the power conversion module further includes: A heat-conducting component is disposed between the heat sink and the first device, and is in contact with both the heat sink and the first device.

9. The power conversion module according to any one of claims 1 to 5, characterized in that, Also includes: Multiple first heat sinks are spaced apart on the heat sink.

10. The power conversion module according to any one of claims 1 to 5, characterized in that, The housing includes: The shell body, wherein the heat sink is disposed on the shell body; The cover is connected to the shell body and encloses the shell body to form the receiving cavity; The first end of the heat dissipation channel is located on the shell body, and the second end of the heat dissipation channel is located on at least one of the cover and the shell body.

11. The power conversion module according to claim 10, characterized in that, The second end of the heat dissipation channel is located on the shell body, which has a first mounting port and a second mounting port. The first end of the heat dissipation channel is located at the first mounting port and is sealed to the inner wall of the first mounting port. The second end of the heat dissipation channel is located at the second mounting port and is sealed to the inner wall of the second mounting port.

12. The power conversion module according to claim 10, characterized in that, The shell body includes: The base plate, the heat sink is disposed on the base plate, and the first end of the heat dissipation channel is disposed on the base plate; Multiple side plates are connected end to end in sequence. One end of each side plate is connected to the bottom plate, and the other end of each side plate is connected to the cover. The multiple side plates, the bottom plate, and the cover form the receiving cavity. The second end of the heat dissipation channel is located on at least one of the side plates.

13. The power conversion module according to any one of claims 1 to 5, characterized in that, The number of heat sinks is multiple, and the multiple heat sinks are arranged at intervals within the receiving cavity; and / or The heat sink includes an aluminum-based composite component; and / or The heat sink has a quadrilateral or circular cross-sectional shape.

14. The power conversion module according to any one of claims 1 to 5, characterized in that, Also includes: The second airflow generator is disposed within the receiving cavity.

15. The power conversion module according to any one of claims 2 to 5, characterized in that, The plurality of electrical devices further include a power device disposed within the receiving cavity, and the heat sink further includes: The outer casing has an air inlet, an air outlet, and an air duct, wherein either the air inlet or the air outlet is connected to the air duct. A heat dissipation substrate is disposed on the housing and in contact with the power device; Multiple second heat sinks are spaced apart on the side of the heat sink substrate away from the power device and located within the air duct; The first airflow generator further includes an air inlet, which is connected to the air inlet.

16. The power conversion module according to any one of claims 1 to 5, characterized in that, The plurality of electrical components also include an inductor, which is disposed in the housing and located outside the receiving cavity.

17. A power conversion device, characterized in that, Includes the power conversion module as described in any one of claims 1 to 16.

18. The power conversion device according to claim 17, characterized in that, The power conversion equipment includes an energy storage converter or a photovoltaic inverter.

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