Power module, electrical cabinet and electrical equipment

Abstract

The utility model relates to the technical field of heat dissipation, and provides a power module, an electrical cabinet and electrical equipment, and the power module comprises a housing, a first heating device and a second heating device. The shell is provided with a cavity, and the cavity comprises a first area and a second area; the first heating device is located in the first area; the second heating device is located in the second area, and the heating value of the first heating device is higher than that of the second heating device. According to the embodiment of the invention, the electrical cabinet has good heat dissipation capability, and thus the service life of the electrical cabinet can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat dissipation, in particular to a power module, an electrical cabinet and an electrical equipment. BACKGROUND

[0002] The electrical equipment is a cabinet used to protect the normal work of the electrical cabinet. The electrical equipment is widely used in chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, transportation industry and the like.

[0003] The power density of the electrical cabinet is high, which leads to serious heat generation. Therefore, the electrical cabinet needs to be well cooled. In the related technology, the electrical equipment includes a cabinet body, an electrical cabinet and a heat exchanger. The heat exchanger is generally installed on the outer side wall of the cabinet body. The heat exchanger is provided with an air inlet and an air outlet which are communicated with the inner cavity of the cabinet body, so as to realize the heat dissipation of the electrical cabinet.

[0004] However, the heat dissipation capacity of the above heat dissipation mode is low, which easily affects the service life of the electrical cabinet. CONTENT OF THE INVENTION

[0005] The present application provides a power module, an electrical cabinet and an electrical equipment, which can have good heat dissipation capacity and thus can ensure the service life of the electrical cabinet.

[0006] The first aspect of the present application provides a power module, comprising: a shell; the shell is provided with a cavity, and the cavity comprises a first region and a second region;

[0007] a first heat generating device; the first heat generating device is located in the first region;

[0008] a second heat generating device; the second heat generating device is located in the second region, and the heat generation of the first heat generating device is higher than that of the second heat generating device.

[0009] The power module provided by the embodiment of the present application is designed by partitioning the cavity in the interior of the shell. Specifically, the interior of the shell is provided with a first region and a second region. The first heat generating device is located in the first region, and the second heat generating device is located in the second region. The heat generation of the first heat generating device is higher than that of the second heat generating device. In actual application, the interior of the shell is designed by partitioning according to the power consumption and temperature demand of the electrical components. Different heat dissipation schemes are provided according to the heat dissipation demand of different regions. In this way, the power module can have good heat dissipation capacity, and thus the service life of the electrical cabinet can be ensured.

[0010] In a possible implementation manner, the power module further comprises: a liquid cooling assembly, which is located in the cavity and is used for cooling the first heat generating device;

[0011] An air cooling assembly is located in the cavity and dissipates heat of at least the second heat generating device, and the air cooling assembly is connected with the liquid cooling assembly.

[0012] The liquid cooling assembly of the first region is connected with the air cooling assembly of the second region, since the first heat generating device generates more heat than the second heat generating device, the inside of the shell is air-cooled, the heat exchange source of the air cooling assembly is derived from the liquid cooling assembly, and the liquid cooling assembly takes away the heat in the inside of the shell through the air cooling assembly, so that the power module has better heat dissipation capacity,

[0013] In a possible implementation, the first region at least includes a first-level region and a second-level region.

[0014] The first heat generating device includes a first-level heat generating device and a second-level heat generating device; the first-level heat generating device is located in the first-level region, and the second-level heat generating device is located in the second-level region.

[0015] The liquid cooling assembly includes a first liquid cooling plate and a second liquid cooling plate; the first liquid cooling plate is located in the first-level region and is used for dissipating heat of the first-level heat generating device; and the second liquid cooling plate is located in the second-level region and is used for dissipating heat of the second-level heat generating device.

[0016] The first liquid cooling plate is in communication with the second liquid cooling plate.

[0017] In a possible implementation, the first-level heat generating device generates more heat than the second-level heat generating device.

[0018] The shell is provided with a water inlet and a water outlet, a liquid inlet of the first liquid cooling plate is in communication with the water inlet, a liquid outlet of the first liquid cooling plate is in communication with a liquid inlet of the second liquid cooling plate, and a liquid outlet of the second liquid cooling plate is in communication with the water outlet.

[0019] In a possible implementation, the shell has a cold air duct and a hot air duct, the air cooling assembly is in communication with the cold air duct and the hot air duct, and the air cooling assembly, the cold air duct and the hot air duct form an internal circulation air duct for air circulation.

[0020] The first-level heat generating device is located in the cold air duct, and the second-level heat generating device and the second heat generating device are located in the hot air duct.

[0021] In a possible implementation, the air cooling assembly includes a fan and a heat sink.

[0022] The fan, the cold air duct and the hot air duct form an internal circulation air duct for air circulation.

[0023] The heat dissipation fin is connected with the liquid cooling assembly.

[0024] In a possible implementation, the air duct partition plate divides the inside of the shell into a cold air duct and a hot air duct, and the hot air duct is located below the cold air duct.

[0025] In a possible implementation, the air fan is located below the air duct partition plate and connected with the air duct partition plate.

[0026] In a possible implementation, the air duct flow guide plate is located on a side of the first region away from the second region, and is used to guide the air in the hot air duct to the cold air duct.

[0027] In a possible implementation, the first-level heat generating device is any one or more of an insulated gate bipolar transistor, a busbar, and a capacitor; or,

[0028] The second-level heat generating device is any one or more of a filter inductor and a power inductor; or,

[0029] The second heat generating device is any one or more of a fuse, a contactor, an aluminum shell resistor, a magnetic ring, a load switch, and an air fan.

[0030] A second aspect of the present application provides an electrical cabinet, comprising: a cabinet body, the cabinet body comprising an air conditioning cabin and an electrical cabin; the air conditioning cabin is used for heat dissipation for the electrical cabin;

[0031] The electrical cabin is provided with the power module.

[0032] The power module is provided in the electrical cabinet, the power module is provided with a first region and a second region in the inside of the shell, the liquid cooling assembly of the first region is connected with the air cooling assembly of the second region, because the heat generation of the first heat generating device is higher than that of the second heat generating device, the inside of the shell is air-cooled and heat-exchanged, the heat-exchange cold source of the air cooling assembly is derived from the liquid cooling assembly, the liquid cooling assembly takes away the heat in the inside of the shell through the air cooling assembly, so that the power module has good heat dissipation capacity, and the service life of the electrical cabinet is ensured.

[0033] In a possible implementation, the electrical cabin is provided with a plurality of power modules.

[0034] The cabinet body is provided with an inlet and an outlet, the inlet is connected with the water inlet of each power module in communication, and the outlet is connected with the water outlet of each power module in communication, so that the plurality of power modules are connected in parallel.

[0035] In a possible implementation, the bottom wall of the air conditioning cabin on the side facing the electrical cabin is inclined.

[0036] In a possible implementation, a drain hole is formed in the side wall of the air conditioning cabin on the side facing the electrical cabin.

[0037] In a possible implementation, the electrical cabin further comprises an electrical control module, a circulating heat exchange module, and a bus output module.

[0038] The circulating heat exchange module is configured to dissipate heat of the electrical control module and the bus output module.

[0039] In a possible implementation, the electrical cabin further comprises a cabinet body and a cabinet door rotatably connected to the cabinet body.

[0040] The power module and the bus output module are located in the cabinet body, and the circulating heat exchange module and the electrical control module are located in the cabinet door.

[0041] In a possible implementation, the bus output module is located at the bottom of the cabinet body.

[0042] In a possible implementation, the protection level of the air conditioning cabin is lower than that of the electrical cabin.

[0043] The third aspect of the present application provides an electrical device, comprising a frame and the electrical cabinet according to any one of the above-mentioned aspects, wherein the electrical cabinet is located in the frame.

[0044] The electrical cabinet provided in the electrical device can improve the use performance of the electrical device.

[0045] In a possible implementation, the electrical device further comprises a battery cabinet, wherein the battery cabinet is located in the frame, and the battery cabinet is configured to supply power to the electrical cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description can also be obtained by those skilled in the art without creative labor.

[0047] Figure 1 An overall structure schematic diagram of the power module provided by the embodiments of the present application;

[0048] Figure 2 Another overall structure schematic diagram of the power module provided by the embodiments of the present application;

[0049] Figure 3 Another overall structure schematic diagram of the power module provided by the embodiment of the present application;

[0050] Figure 4 Another overall structure schematic diagram of the power module provided by the embodiment of the present application;

[0051] Figure 5 A split structure schematic diagram of the power module provided by the embodiment of the present application;

[0052] Figure 6 Another split structure schematic diagram of the power module provided by the embodiment of the present application;

[0053] Figure 7 A structure schematic diagram of the liquid cooling assembly and the air cooling assembly in the power module provided by the embodiment of the present application;

[0054] Figure 8 Another structure schematic diagram of the liquid cooling assembly and the air cooling assembly in the power module provided by the embodiment of the present application;

[0055] Figure 9 Another structure schematic diagram of the liquid cooling assembly and the air cooling assembly in the power module provided by the embodiment of the present application;

[0056] Figure 10 A side view sectional view of the circulating air duct in the power module provided by the embodiment of the present application;

[0057] Figure 11 Another split structure schematic diagram of the power module provided by the embodiment of the present application;

[0058] Figure 12 A structure schematic diagram of the air duct partition in the power module provided by the embodiment of the present application;

[0059] Figure 13 Another structure schematic diagram of the air duct partition in the power module provided by the embodiment of the present application;

[0060] Figure 14 An overall structure schematic diagram of the electrical cabinet provided by the embodiment of the present application;

[0061] Figure 15 Another overall structure schematic diagram of the electrical cabinet provided by the embodiment of the present application;

[0062] Figure 16 Another overall structure schematic diagram of the electrical cabinet provided by the embodiment of the present application;

[0063] Figure 17 A structure schematic diagram of the cabinet door of the electrical cabinet provided by the embodiment of the present application in an open state;

[0064] Figure 18 A side view of an electrical cabinet according to an embodiment of the present application;

[0065] Figure 19 Another side view of an electrical cabinet according to an embodiment of the present application;

[0066] Figure 20 A side view of an electrical compartment in an electrical cabinet according to an embodiment of the present application;

[0067] Figure 21 A structural view of a power module in an electrical cabinet according to an embodiment of the present application in an extracted state;

[0068] Figure 22 Another structural view of a power module in an electrical cabinet according to an embodiment of the present application in an extracted state;

[0069] Figure 23 Still another side view of an electrical cabinet according to an embodiment of the present application;

[0070] Figure 24 A structural view of a bus output module in an electrical cabinet according to an embodiment of the present application;

[0071] Figure 25 A structural view of an electrical device according to an embodiment of the present application.

[0072] Reference signs:

[0073] 100 - power module; 110 - housing; 111 - cable interface;

[0074] 112 - water pipe interface; 120 - first level area; 121 - first liquid cooling plate;

[0075] 122 - first level heat generating device; 130 - second level area; 131 - second liquid cooling plate;

[0076] 132 - second level heat generating device; 140 - second area; 142 - second heat generating device;

[0077] 1421 - aluminum shell resistor; 150 - air duct partition; 151 - cold air duct;

[0078] 152 - hot air duct; 153 - horizontal air duct partition; 154 - vertical air duct partition;

[0079] 160 - air cooling assembly; 161 - heat sink; 162 - fan;

[0080] 170 - air duct guide plate; 200 - electrical cabinet; 210 - air conditioning compartment;

[0081] 211 - bottom wall; 212 - side wall; 2121 - drainage hole;

[0082] 220 - electrical cabinet; 2201 - cabinet body; 2202 - cabinet door;

[0083] 221 - electrical control module; 2211 - strong current area; 2212 - weak current area;

[0084] 222 - circulating heat exchange module; 223 - converging output module; 300 - electrical equipment;

[0085] 310 - frame; 320 - battery cabinet. DETAILED DESCRIPTION

[0086] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0087] The power density of the electrical cabinet is high, which leads to serious heat generation, and the electrical cabinet often needs to be cooled well. In the related art, the electrical equipment comprises a cabinet body, an electrical cabinet and a heat exchanger, the heat exchanger is generally installed on the outer side wall of the cabinet body, and the heat exchanger is provided with an air inlet and an air outlet communicating with the inner cavity of the cabinet body, so as to realize the cooling of the electrical cabinet.

[0088] However, the cooling capacity of the above cooling mode is low, which easily affects the service life of the electrical cabinet.

[0089] To solve the above problems, the embodiments of the application provide a new power module, electrical cabinet and electrical equipment. The power module comprises a shell, a first heat generating device and a second heat generating device. The shell is provided with a cavity, and the cavity comprises a first area and a second area. The first heat generating device is located in the first area, and the second heat generating device is located in the second area. The heat generation of the first heat generating device is higher than that of the second heat generating device. The embodiments of the application can have good cooling capacity, thereby ensuring the service life of the electrical cabinet.

[0090] The power module, electrical cabinet and electrical equipment provided by the embodiments of the application will be described in detail below in conjunction with the drawings.

[0091] Figure 1 A schematic diagram of the overall structure of the power module provided by the embodiments of the application. Figure 2Another overall structure schematic diagram of the power module provided in the embodiment of the present application. Figure 3 Another overall structure schematic diagram of the power module provided in the embodiment of the present application. Figure 4 Another overall structure schematic diagram of the power module provided in the embodiment of the present application. Figure 5 A split structure schematic diagram of the power module provided in the embodiment of the present application. Figure 6 Another split structure schematic diagram of the power module provided in the embodiment of the present application.

[0092] Referring to Figures 1 to 4 As shown in the figure, the embodiment of the present application provides a power module 100, which can include a shell 110, and a cavity is arranged inside the shell 110. Referring to Figure 5 As shown in the figure, the cavity of the power module 100 can include a first region (i.e. a first-stage region 120 and a second-stage region 130 in Figure 5 ) and a second region 140.

[0093] The power module 100 can further include first heat generating devices (i.e. a first-stage heat generating device 122 and a second-stage heat generating device 132 in Figure 5 ) and a second heat generating device 142, as shown in Figure 5 and Figure 6 The first heat generating device is located in the first region, and the second heat generating device 142 is located in the second region 140, wherein the heat generation of the first heat generating device is higher than that of the second heat generating device 142.

[0094] By partitioning the cavity inside the shell, specifically, the first region and the second region are arranged inside the shell, the first heat generating device is located in the first region, and the second heat generating device is located in the second region, wherein the heat generation of the first heat generating device is higher than that of the second heat generating device. In actual application, the internal layout of the shell is partitioned and designed according to the power consumption and temperature demand of electrical components, and different heat dissipation schemes are provided according to the heat dissipation demand of different regions, which can ensure that the power module has good heat dissipation capacity, thereby ensuring the service life of the electrical cabinet.

[0095] In the embodiment of the present application, the power module 100 can further include a liquid cooling assembly (i.e. a first liquid cooling plate 121 and a second liquid cooling plate 131 in Figure 5 ) and an air cooling assembly 160, the liquid cooling assembly is located in the cavity and used for heat dissipation of the first heat generating device, and the air cooling assembly 160 is located in the cavity and used for heat dissipation of at least the second heat generating device 142.

[0096] In the embodiment of the present application, referring to Figures 7 to 9As shown, the air cooling assembly 160 can be connected with the liquid cooling assembly. The liquid cooling assembly can for example include a liquid cooling plate, and the air cooling assembly 160 can for example include at least a heat sink.

[0097] In this way, the liquid cooling assembly of the first region is connected with the air cooling assembly 160 of the second region 140, and since the first heat generating device has a higher heat generation amount than the second heat generating device 142, the interior of the shell 110 is air-cooled, and the heat exchange cold source of the air cooling assembly 160 is derived from the liquid cooling assembly, which can take away the heat in the interior of the shell 110 through the air cooling assembly 160, thereby ensuring that the power module 100 has better heat dissipation capability.

[0098] In one possible implementation, the air cooling assembly 160 and the liquid cooling assembly can be connected through pressure welding. In this way, the liquid cooling assembly can better achieve heat dissipation through the air cooling assembly 160, and it is also convenient to achieve higher space utilization.

[0099] The interior of the shell 110 adopts a high-sealing form, and the heat of the internal air cooling heat dissipation cannot be directly discharged to the outside of the shell 110. By adding the internal air cooling assembly 160, the air cooling assembly 160 is combined below the liquid cooling assembly, specifically, the air cooling assembly 160 is crimped below the liquid cooling assembly, and the cooling liquid of the liquid cooling assembly can release cold to the air cooling assembly 160 to absorb the ambient heat (mainly from the heat of the second region 140) in the shell 110. In this way, for the entire power module 100, the first stage region 120 and the second stage region 130 adopt liquid cooling, and the heat of the second region 140 is taken away by the air cooling assembly 160 crimped on the liquid cooling assembly, so as to achieve temperature balance of the entire cavity.

[0100] Alternatively, in other implementations, the air cooling assembly 160 can be separated from the liquid cooling assembly, which can be a simple air cooler, and the water inlet pipe and the water outlet pipe are connected separately, and then the ambient temperature is cooled.

[0101] In the embodiment of the present application, the shell 110 adopts a high-sealing structure, and the shell 110 can adopt an IP66+ protection level. The air cooling heat dissipation in the interior of the shell 110 does not adopt an outdoor heat exchange form, but completely adopts a sealed shell 110 for air cooling heat exchange.

[0102] As shown in Figure 1 and Figure 2 The shell 110 can also be provided with a cable interface 111 and a water pipe interface 112, and the cable interface 111 and the water pipe interface 112 can be integrated on the front side of the shell 110, which is convenient for manual operation.

[0103] In the embodiment of the present application, as shown in Figure 5 and Figure 6As shown, the first region may include at least a first-level region 120 and a second-level region 130. The first heating device may include a first-level heating device 122 and a second-level heating device 132. The first-level heating device 122 is located in the first-level region 120, and the second-level heating device 132 is located in the second-level region 130.

[0104] The liquid cooling assembly may include a first liquid cooling plate 121 and a second liquid cooling plate 131. The first liquid cooling plate 121 is located in the first-stage region 120 and is used to dissipate heat from the first-stage heat-generating device 122. The second liquid cooling plate 131 is located in the second-stage region 130 and is used to dissipate heat from the second-stage heat-generating device 132. Moreover, the first liquid cooling plate 121 and the second liquid cooling plate 131 are connected. The first-stage region 120 and the second-stage region 130 use liquid cooling for heat dissipation. Since the first liquid cooling plate 121 and the second liquid cooling plate 131 are connected, a gradual heat dissipation effect can be achieved by using a series water circuit.

[0105] In this embodiment, the housing 110 is provided with an inlet and an outlet. Specifically, in this embodiment, taking the example that the heat output of the first-stage heating element 122 is higher than that of the second-stage heating element 132, the liquid inlet of the first liquid cooling plate 121 is connected to the water inlet, the liquid outlet of the first liquid cooling plate 121 is connected to the liquid inlet of the second liquid cooling plate 131, and the liquid outlet of the second liquid cooling plate 131 is connected to the water outlet. In this way, the first-stage heating element 122 has a higher temperature requirement. The water inlet of the housing 110 is directly connected to the first liquid cooling plate 121 below the first-stage heating element 122 as the main liquid cooling. The coolant that has undergone one heat exchange from the first liquid cooling plate 121 re-enters the second liquid cooling plate 131 below the second-stage heating element 132 as the secondary liquid cooling. The coolant that exchanges heat from the second liquid cooling plate 131 is at a higher temperature and is directly connected to the outside of the housing 110.

[0106] by Figure 5 and Figure 6 Taking the power module 100 shown as an example, in this embodiment of the application, the interior of the housing 110 of the power module 100 is divided into regions according to the heat generation of different heat-generating devices. Specifically, it is divided into a first-level region 120, a second-level region 130, and a second-level region 140 according to the heat generation, with the heat generation decreasing step by step. Different heat dissipation schemes are selected for different regions. The first-level region 120 adopts main liquid cooling, the second-level region 130 adopts secondary liquid cooling, and the second-level region 140 adopts auxiliary air cooling.

[0107] Of course, in the embodiments of this application, the number of the first region and the number of the second region 140 can be one, two, three, four or more. The embodiments of this application do not limit this, nor are they limited to the above examples.

[0108] It can be understood that in some other embodiments, the housing 110 of the power module 100 is internally arranged in a zoned manner, and the internal layout can be zoned according to the power consumption and temperature requirements of electrical components. Specifically, when the order is arranged according to the heat dissipation requirement, the positions of the zones can be adjusted in the actual process, and the connection forms of the pipes of the liquid cooling assembly can be changed. At present, the connection form is a series connection form. The series connection order can also be adjusted, or the connection form can be changed into a parallel connection form to achieve the same heat exchange effect. The embodiments of the present application do not limit this, as long as a good heat exchange effect can be achieved.

[0109] The first-level heat generating device 122 can be an insulated gate bipolar transistor, a busbar, and a capacitor, etc. The second-level heat generating device 132 can be a filter inductor and a power inductor, etc. The second heat generating device 142 can be a fuse, a contactor, an aluminum shell resistor, a magnetic ring, a load switch, and a fan, etc.

[0110] The insulated gate bipolar transistor as a core device has high temperature requirements, and the inductor generates a large amount of heat. These two parts are separately zoned, and liquid cooling is used for heat dissipation to meet the device usage requirements. The remaining devices with relatively small heat generation are separately zoned for internal circulation air cooling heat dissipation. Specifically, the first-level heat generating device 122 is located in the first-level zone 120, the second-level heat generating device 132 is located in the second-level zone 130, and the remaining devices with relatively small heat generation (i.e., the second heat generating device 142) are located in the second zone 140. These three zones are arranged in the housing 110 according to the heat dissipation power consumption and requirements.

[0111] The first-level zone 120 and the second-level zone 130 use liquid cooling for heat dissipation, and the internal part uses a series waterway. The insulated gate bipolar transistor has high temperature requirements. The water inlet pipe of the housing 110 is directly connected to the first liquid cooling plate 121 below the first-level zone 120 as the main liquid cooling. The cooling liquid that comes out of the first-level zone 120 after the first heat exchange enters the second liquid cooling plate 131 below the second-level zone 130 again as the secondary liquid cooling. The cooling liquid that comes out of the second-level zone 130 after the heat exchange has a high temperature and is directly connected out of the housing 110.

[0112] As shown in FIG. 1, Figure 10 As shown in FIG. 1, the housing 110 can have a cold air duct 151 and a hot air duct 152 in the embodiments of the present application. The air cooling assembly is in communication with the cold air duct 151 and the hot air duct 152, and the air cooling assembly, the cold air duct 151, and the hot air duct 152 form an internal circulation air duct for air circulation.

[0113] In a possible implementation, the first-level heat generating device 122 can be located in the cold air duct 151, and the second-level heat generating device 132 and the second heat generating device 142 can be located in the hot air duct 152. In this way, the first-level heat generating device 122 has high heat dissipation requirement and is located in the cold air duct 151. The second-level heat generating device 132 and the second heat generating device 142 have relatively low heat dissipation requirement and are located in the hot air duct 152. The three are located in the inner circulation air duct that can supply air circulation, and better circulation heat dissipation effect can be achieved.

[0114] In the embodiment of the present application, the air cooling assembly can include the fan 162 and the heat sink 161, wherein the fan 162, the cold air duct 151 and the hot air duct 152 form the inner circulation air duct that can supply air circulation, and the heat sink 161 is connected with the liquid cooling assembly. In this way, better circulation heat dissipation effect can be achieved.

[0115] Specifically, in some embodiments, the fan 162 can be located in the hot air duct 152, and the fan 162 is used to supply air for the second heat generating device 142.

[0116] In the embodiment of the present application, the power module 100 can further include the air duct partition plate 150, which can play a role in isolating the air duct. As shown in Figure 10 The air duct partition plate 150 divides the inside of the shell 110 into the cold air duct 151 and the hot air duct 152, and the hot air duct 152 is located below the cold air duct 151.

[0117] In a possible implementation, as shown in Figure 10 The fan 162 can be located below the air duct partition plate 150 and connected with the air duct partition plate 150. In this way, the fan 162 supplies air downward, and the air supply effect is better.

[0118] The first-level heat generating device 122 is located in the cold air duct 151, and the second-level heat generating device 132 and the second heat generating device 142 are located in the hot air duct 152. That is to say, for the auxiliary air cooling area, the embodiment of the present application separately designs the circulation air duct to isolate the cold air and the hot air, and better heat dissipation requirement can be achieved.

[0119] Specifically, continuing to refer to Figure 10 The air duct partition plate 150 can include the horizontal air duct partition plate 153 and the vertical air duct partition plate 154. The cold air duct 151 (air after passing through the air cooling assembly 160) can be above the horizontal air duct partition plate 153, and the hot air duct 152 (air after being heated after passing through the second area 140) can be below the horizontal air duct partition plate 153, in other words, the cold air duct is the area after passing through the air cooling assembly 160, and the hot air duct is the area without passing through the air cooling assembly 160.

[0120] As Figure 11 and Figure 12 shown in the embodiments of the present application, the power module 100 can further include a wind channel flow guide plate 170, which can play a role of flow guide. Specifically, the wind channel flow guide plate 170 is located on the side of the first area away from the second area 140, and is used to guide the wind of the hot air channel 152 to the cold air channel 151.

[0121] The circulating air channel is arranged in two layers in space, the fan 162 is arranged below the horizontal air channel partition plate 153, and the air is blown downward in a downward air supply form, directly blowing air to the second area 140, and then passing through the wind channel flow guide plate 170 to guide the air warmed after passing through the second area 140 to the position of the air cooling assembly 160 for heat exchange, and the air cooled by the air cooling assembly 160 is again returned to the fan 162 from above the air channel, so as to complete a cycle of the air path.

[0122] In addition, in some other embodiments, part of the second heat generating device 142 can be placed in the cold air channel 151 to further compress the space volume and improve the space utilization rate under the condition of meeting heat dissipation. Figure 12 and Figure 13 For example, the aluminum shell resistor 1421 is placed in the cold air channel 151. Of course, in some other embodiments, other second heat generating devices 142 except the aluminum shell resistor 1421 can be placed in the cold air channel 151, and the embodiments of the present application are not limited thereto.

[0123] It can be understood that the first area 120 contains a capacitor, and the heat generation of the capacitor is also large. The cold air from the air cooling assembly 160 can pass through the rear wind channel flow guide plate 170, and the air flow is guided to the capacitor position (see Figure 12 ), and then continues to circulate and dissipate heat.

[0124] In the embodiments of the present application, for heat dissipation of the second area 140, the air cooling and circulation heat dissipation form in the shell 110 is adopted, the circulating air channel is arranged in the shell 110 to physically separate the cold air and the hot air, prevent the cold and hot air flow from short-circuiting in the shell 110, and cannot fully circulate in the whole machine shell 110, and at the same time can improve the heat exchange temperature difference of the cold and hot air paths, and then improve the overall heat exchange efficiency.

[0125] In the embodiment of the present application, the shell 110 adopts a high sealing structure, and the inside of the shell 110 is cooled by both liquid cooling and air cooling. Generally, in the outer circulation air cooling power module 100, when the cooling liquid is chilled water, the air humidity is high, and there is a serious condensation problem. The solution in the related art is to paste thermal insulation cotton. However, the embodiment of the present application adopts a high sealing structure and an internal circulation air cooling design, which can ensure that the air humidity inside the shell 110 is dry, so that the shell 110 will not produce condensation.

[0126] In the embodiment of the present application, all devices are placed in the shell 110 in a region, and the limited space is fully utilized. The fan 162 is arranged horizontally in the air, and the remaining space volume above the second heat generating device 142 is utilized. In addition, in combination with the entire system, after all the devices in the region are installed, the remaining position is used to arrange the air cooling circulation air duct, so that the overall heat generation is controlled. At the same time, part of the second heat generating device 142 is also placed in the cold air duct 151, further compressing the space of the second region 140. In this way, under the same power condition, the power module 100 occupies a very small arrangement volume, the space utilization rate is the highest, that is, the power density is the best.

[0127] It can be understood that the embodiment of the present application adopts a liquid cooling heat exchange combined with air cooling auxiliary heat exchange mode, cooperates with a high sealing cavity, so that it can provide the maximum conversion power in a limited space, and control the heat generation of each part of the heat generating device in the optimal temperature range, to meet the long-term stable size operation of the power module.

[0128] As shown in Figures 14 to 16 , the embodiment of the present application also provides an electrical cabinet 200, which can at least include a cabinet body, the cabinet body can include an air conditioning cabin 210 and an electrical cabin 220, wherein the air conditioning cabin 210 is used for heat dissipation for the electrical cabin 220, and the electrical cabin 220 is provided with the power module 100.

[0129] The power module 100 has high heat dissipation capacity, which can effectively reduce the heat in the electrical cabin 220, thereby helping to improve the service life of the electrical cabinet 200.

[0130] It can be understood that, as shown in Figure 16 and Figure 17 , according to the heat dissipation needs of the electrical cabinet 200, the electrical cabinet 200 is divided into two cabins, an upper cabin and a lower cabin, wherein the upper cabin is the air conditioning cabin 210, and the lower cabin is the electrical cabin 220, and the power module 100 is located in the electrical cabin 220.

[0131] Due to different use environments of the internal devices of the electrical cabinet 200, the protection levels of the two cabins are different. Generally, the internal devices of the air conditioner cabin 210 only have air conditioners, and the air conditioners themselves have an IP55 protection level, so the protection level of the air conditioner cabin 210 is low in design. The electrical cabin 220 is generally provided with electrical devices, and therefore the protection level of the electrical cabin 220 reaches IP66 in design, and the protection level is high.

[0132] In the embodiment of the present application, as shown in Figure 18 The bottom wall 211 of the air conditioner cabin 210 on the side facing the electrical cabin 220 can be inclined.

[0133] In a possible implementation, the inclination angle of the bottom wall 211 of the air conditioner cabin 210 on the side facing the electrical cabin 220 can be 1°-5°. Exemplarily, the inclination angle of the bottom wall 211 of the air conditioner cabin 210 on the side facing the electrical cabin 220 can be 1°, 1.6°, 2°, 3°, 4°, 5°, etc., and the present application is not limited thereto and is not limited to the above examples.

[0134] It should be noted that the values and value ranges involved in the present application are approximate values, and there can be a certain range of errors due to the manufacturing process, which can be considered negligible by those skilled in the art.

[0135] In addition, in the embodiment of the present application, as shown in Figure 19 The side wall 212 on the side of the air conditioner cabin 210 facing the electrical cabin 220 can also be provided with a drain hole 2121. The side wall 212 on the side of the air conditioner cabin 210 facing the electrical cabin 220 is provided with a drain hole 2121, so that the bottom surface of the air conditioner cabin 210 will not have accumulated water, thereby reducing the risk of failure of the air conditioner cabin 210.

[0136] In the embodiment of the present application, the air conditioner can be placed on the guide rail, and then pushed into the air conditioner cabin 210. The guide rail has a stop block on the left and right sides, and a latch at the end, which can ensure that the air conditioner is installed in place, and then the air conditioner fixing member is installed to complete the installation of the air conditioner.

[0137] In addition, in a possible implementation, openings can be provided at the top of the air conditioner and the top of the air conditioner cabin 210, so that the water pump and expansion tank in the air conditioner can be maintained from the top.

[0138] In the embodiment of the present application, the electrical cabin 220 can further include an electrical control module 221, a circulating heat exchange module 222, and a bus output module 223, wherein the circulating heat exchange module 222 is configured to dissipate heat for the electrical control module 221 and the bus output module 223.

[0139] In the embodiment of the present application, the electrical cabin 220 can further include a cabinet body 2201 and a cabinet door 2202, the cabinet door 2202 is rotatably connected to the cabinet body 2201, the power module 100 and the bus output module 223 are located in the cabinet body 2201, and the circulating heat exchange module 222 and the electrical control module 221 are located in the cabinet door 2202. By adopting the door-hanging design for the electrical control module 221, it is convenient to maintain and replace the devices and burn the software.

[0140] Referring to Figure 20 In the embodiment of the present application, the electrical control module 221 is divided into a strong current area 2211 and a weak current area 2212 according to the size of the voltage, and the strong current area 2211 and the weak current area 2212 are separately wired, which can effectively reduce the interference.

[0141] The electrical control module 221 is provided with strong current devices, which can include a switching power supply, a micro-break switch, a direct current lightning protector, a relay, and the like, and the main functions include power supply for air conditioners, cooling panels, power modules, communication boards, and control boards, and protection of safe and stable operation of the circuit. The weak current devices can include communication boards, control boards, switches, and network port lightning protectors, and the main function is to realize the transmission of control signals. The above devices are simple in installation mode and can be directly maintained and replaced on the cabinet door 2202.

[0142] In the embodiment of the present application, the power module 100 located in the cabinet body 2201 adopts a drawer type design (see Figure 21 As shown), which is easy to install.

[0143] In some embodiments, a plurality of power modules 100 can be provided in the electrical cabin 220, the cabinet body has an inlet and an outlet, the inlet is in communication with the water inlets of each power module 100, and the outlet is in communication with the water outlets of each power module 100, so as to parallelly connect the plurality of power modules 100.

[0144] It can be understood that the liquid cooling heat dissipation in the power module 100 is achieved by adopting a parallel waterway (see Figure 23 As shown), the cooling liquid flows out from the top air conditioner and flows to each power module 100, which can ensure that the temperature conditions of the power modules 100 are similar, and the maintenance of a single power module 100 will not affect the normal work of other modules.

[0145] In the embodiment of the present application, the number of power modules 100 in the electrical cabin 220 can be one or more. For example,Figure 22 and Figure 23 In the electrical compartment 220, five power modules 100 are installed inside the cabinet 2201, employing a pull-out structure. Each power module 100 has guide blocks on both sides for easy insertion while ensuring minimal deviation in the relative position of the two sides. Each power module 100 also has limit stops on both sides; when a power module 100 hits a stop, it indicates that the module is properly installed. Additionally, screw holes are provided between the stops and the power modules 100 to secure them to the stops. All these operations can be performed from the front of the cabinet 2201; that is, opening the cabinet door 2202 allows for easy insertion and removal of the power modules 100 from the front, facilitating installation and maintenance.

[0146] A surface cooler is installed within the circulating heat exchange area. The surface cooler can be mounted on cabinet door 2202 and primarily dissipates heat from the components of electrical control module 221 and the copper busbars and fuses of busbar output module 223. Circulating heat exchange module 222 does not have an air duct. Since the heat generation of electrical control module 221 and busbar output module 223 differs significantly, the placement of the surface cooler directs the main airflow from the surface cooler towards the copper busbars and fuses of busbar output module 223, while a small portion of the airflow diffuses into or directly converges with the electrical control module 221, thus meeting the heat dissipation requirements. Furthermore, since the power module 100 uses liquid cooling, the internal circulation heat exchange module 222 effectively avoids condensation. Therefore, circulating heat exchange module 222 needs to dissipate heat from electrical control module 221 and busbar output module 223, using internal circulation air cooling. Based on the heat dissipation requirements, auxiliary air ducts are not required.

[0147] In one possible implementation, when the busbar output module 223 is located inside the cabinet 2201, the busbar output module 223 can be arranged at the bottom of the cabinet 2201, that is, the busbar output module 223 is located below the power module 100. The busbar output module 223 can be installed and maintained from the front by opening the cabinet door 2202. This facilitates the connection of busbar cables and the wiring of customer cables, while also meeting the heat dissipation requirements.

[0148] The bus output module 223 mainly includes a busbar, a heat sink, and a fuse, which integrate the entire bus output module 223 into a single unit (see [link]). Figure 24 As shown in the diagram, during installation, the entire module simply needs to be placed inside the cabinet. Furthermore, when the fuse requires maintenance, the entire module does not need to be removed; the module also has a pull-out structure. After removing the relevant fasteners, only the sheet metal part housing the fuse needs to be pulled out. The busbar is fixed to the sheet metal bracket by insulators and epoxy resin plates, meeting electrical clearance and creepage distance requirements.

[0149] In addition, in view of safety, transparent plates can be used to protect the front of the copper bus bar and the customer cable connection position, so that in normal cases, after the door is opened, the staff cannot directly touch the DC high-voltage cable and the copper bus bar, and the safety of the staff can be ensured.

[0150] It should be noted that in the embodiments of the present application, the electrical cabinet 200 can be used as a separate device or integrated into other devices, and the embodiments of the present application are not limited to the above examples.

[0151] The embodiments of the present application also provide an electrical device, such as Figure 25 As shown in the figure, the electrical device 300 can include a frame 310 and the above-mentioned electrical cabinet 200, and the electrical cabinet 200 is located inside the frame 310.

[0152] At this time, the form of the air conditioning cabin 210 in the electrical cabinet 200, the air inlet and outlet position of the air conditioning cabin 210, and the installation position of the air conditioning cabin 210 can be changed according to actual needs to achieve higher space utilization.

[0153] In the embodiments of the present application, the electrical device 300 can also include a battery cabinet 320, and the battery cabinet 320 is located inside the frame 310, and the battery cabinet 320 is used to supply power to the electrical cabinet 200.

[0154] In addition, it should be noted that when the electrical cabinet 200 is applied to the electrical device 300 as shown in the figure, only the front door and the top opening are needed to adapt to the application, and in some other application scenarios, the front and rear doors can also be changed, and the arrangement can be adjusted to make it easier to install and maintain. Figure 25

[0155] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0156] ​In the description of the present application, it should be understood that the terms "may include" and "has" and any variations thereof used herein are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units need not be limited to those clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0157] Unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or can be integrated, can be directly connected, or indirectly connected through an intermediate medium, can be connected inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0158] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power module (100), characterized in that, At least including: The housing (110) is provided with a cavity, the cavity including a first region and a second region (140); A first heating element is located in the first region; The second heating element (142) is located in the second region (140), and the heat output of the first heating element is higher than that of the second heating element (142).

2. The power module (100) according to claim 1, characterized in that, Also includes: A liquid cooling assembly, located within the cavity and used to dissipate heat from the first heat-generating device; And an air-cooling assembly (160) located in the cavity and at least dissipating heat from the second heat-generating device (142), and the air-cooling assembly (160) being connected to the liquid-cooling assembly.

3. The power module (100) according to claim 2, characterized in that, The first region includes at least: a first-level region (120) and a second-level region (130); The first heating device includes a first-stage heating device (122) and a second-stage heating device (132); the first-stage heating device (122) is located in the first-stage region (120), and the second-stage heating device (132) is located in the second-stage region (130); The liquid cooling assembly includes a first liquid cooling plate (121) and a second liquid cooling plate (131); the first liquid cooling plate (121) is located in the first-stage region (120) and is used to dissipate heat from the first-stage heat-generating device (122); the second liquid cooling plate (131) is located in the second-stage region (130) and is used to dissipate heat from the second-stage heat-generating device (132); The first liquid cooling plate (121) is connected to the second liquid cooling plate (131).

4. The power module (100) according to claim 3, characterized in that, The heat generated by the first-stage heating element (122) is higher than that generated by the second-stage heating element (132); The housing (110) is provided with a water inlet and a water outlet. The liquid inlet of the first liquid cooling plate (121) is connected to the water inlet. The liquid outlet of the first liquid cooling plate (121) is connected to the liquid inlet of the second liquid cooling plate (131). The liquid outlet of the second liquid cooling plate (131) is connected to the water outlet.

5. The power module (100) according to claim 3, characterized in that, The housing (110) has a cold air duct (151) and a hot air duct (152) inside. The air-cooling components (160) are all connected to the cold air duct (151) and the hot air duct (152), and the air-cooling components (160), the cold air duct (151) and the hot air duct (152) form an internal circulation duct that allows airflow to circulate. The first-stage heating element is located in the cold air duct (151), and the second-stage heating element (132) and the second heating element are located in the hot air duct (152).

6. The power module (100) according to claim 5, characterized in that, The air-cooled assembly (160) includes a fan (162) and a heat sink (161); The fan (162), the cold air duct (151), and the hot air duct (152) form an internal circulation duct that allows airflow to circulate. The heat sink (161) is connected to the liquid cooling assembly.

7. The power module (100) according to claim 6, characterized in that, Also includes: Air duct partition (150); the air duct partition (150) divides the interior of the housing (110) into a cold air duct (151) and a hot air duct (152), and the hot air duct (152) is located below the cold air duct (151).

8. The power module (100) according to claim 7, characterized in that, The fan (162) is located below the duct partition (150) and is connected to the duct partition (150).

9. The power module (100) according to claim 7, characterized in that, Also includes: Air duct guide plate (170); the air duct guide plate (170) is located on the side of the first region away from the second region, and the air duct guide plate (170) is used to guide the air from the hot air duct (152) to the cold air duct (151).

10. The power module (100) according to any one of claims 3-9, characterized in that, The first-stage heating device (122) is any one or more of an insulated-gate bipolar transistor, a busbar, and a capacitor; or, The second-stage heating device (132) is any one or more of a filter inductor and a power inductor; or, The second heating device (142) is any one or more of the following: fuse, contactor, aluminum-cased resistor, magnetic ring, load switch and fan (162).

11. An electrical cabinet (200), characterized in that, include: The cabinet includes an air conditioning compartment (210) and an electrical compartment (220); the air conditioning compartment (210) is used to dissipate heat from the electrical compartment (220); The electrical compartment (220) is equipped with a power module (100) as described in any one of claims 1-10.

12. The electrical cabinet (200) according to claim 11, characterized in that, The electrical compartment (220) is equipped with multiple power modules (100); The cabinet has an inlet and an outlet. The inlet is connected to the water inlet of each power module (100), and the outlet is connected to the water outlet of each power module (100), so that multiple power modules (100) are connected in parallel.

13. The electrical cabinet (200) according to claim 11, characterized in that, The bottom wall of the air conditioning compartment (210) facing the electrical compartment (220) is inclined.

14. The electrical cabinet (200) according to claim 13, characterized in that, The air conditioning compartment (210) has a drainage hole (2121) on the side wall facing the electrical compartment (220).

15. The electrical cabinet (200) according to claim 11, characterized in that, The electrical compartment (220) also includes: an electrical control module (221), a circulating heat exchange module (222), and a bus output module (223); The circulating heat exchange module (222) is used to dissipate heat from the electrical control module (221) and the bus output module (223).

16. The electrical cabinet (200) according to claim 15, characterized in that, The electrical compartment (220) also includes: a cabinet (2201) and a cabinet door (2202) rotatably connected to the cabinet (2201); The power module (100) and the bus output module (223) are located inside the cabinet (2201), and the circulating heat exchange module and the electrical control module are located inside the cabinet door (2202).

17. The electrical cabinet (200) according to claim 16, characterized in that, The bus output module (223) is located at the bottom of the cabinet (2201).

18. The electrical cabinet (200) according to any one of claims 11-17, characterized in that, The protection level of the air conditioning compartment (210) is lower than that of the electrical compartment (220).

19. An electrical device (300), characterized in that, include: The frame (310) and the electrical cabinet (200) as described in any one of claims 11-18; the electrical cabinet (200) is located inside the frame (310).

20. The electrical equipment (300) according to claim 19, characterized in that, It also includes: a battery cabinet (320); the battery cabinet (320) is located inside the frame (310), and the battery cabinet (320) is used to supply power to the electrical cabinet (200).

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