Shielding assembly, inverter control module and energy storage device

Abstract

The application relates to the technical field of energy storage, and specifically discloses a shielding assembly, an inverter control module and an energy storage device. The shielding assembly is applied to the inverter control module, and the inverter control module comprises a circuit board. The shielding assembly comprises a bearing plate, a rectifying shell and a shielding cover with an opening. The rectifying shell is installed on the bearing plate, and the rectifying shell and the bearing plate jointly form an assembly space. The assembly space is configured to install the circuit board. In the assembly space, the rectifying shell is configured to form a heat dissipation channel in the top space of the circuit board. The shielding cover is arranged on the rectifying shell and fixedly connected with the rectifying shell, and the edge of the shielding cover at the opening is connected to the outer contour edge of the bearing plate. The shielding assembly can not only electromagnetically shield the power devices in the circuit board through the shielding cover, but also support the circuit board through the bearing plate and dissipate heat of the power devices in the circuit board through the heat dissipation channel constructed in the top space of the circuit board.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a shielding component, an inverter control module, and an energy storage device. Background Technology

[0002] Energy storage devices are used to store energy and release it when needed. Some energy storage devices include inverter control modules to achieve integrated charging and inverter operation. Existing shielding is usually a metal shell built around the inverter control module; however, the metal shell only has a shielding function and its overall function is relatively simple. Utility Model Content

[0003] In view of this, this application provides a shielding component, an inverter control module, and an energy storage device, which can improve the functional versatility of the shielding cover.

[0004] One embodiment of this application provides a shielding assembly. The shielding assembly is applied to an inverter control module, which includes a circuit board. The shielding assembly includes a carrier plate, a rectifier housing, and a shielding cover with an opening. The carrier plate is constructed as a sheet metal part. The rectifier housing is mounted on the carrier plate, and the rectifier housing and the carrier plate together form an assembly space. The assembly space is configured for mounting the circuit board. Within the assembly space, the rectifier housing is configured to create a heat dissipation channel in the top space of the circuit board. The shielding cover is disposed on the rectifier housing and fixedly connected to the rectifier housing, with the edge of the shielding cover at the opening connecting to the outer contour edge of the carrier plate.

[0005] The aforementioned shielding assembly not only provides electromagnetic shielding for the power devices on the circuit board through the shielding cover, but also supports the circuit board through the carrier plate and dissipates heat from the power devices through the heat dissipation channels constructed in the top space of the circuit board. Furthermore, the shielding cover, rectifier shell, and carrier plate in this application collectively constitute a cage-like structure (i.e., forming a cage-like shielding assembly), which possesses superior structural strength. When the inverter control module experiences a collision or impact, the cage-like shielding assembly can effectively withstand external forces, protecting the circuit board inside the cage-like shielding assembly and improving the stability and vibration resistance of the circuit board installation.

[0006] In some embodiments of this application, the shielding assembly further includes a support post, one end of which is mounted on the rectifier housing, and the other end of which is configured to pass through the circuit board and be fixedly connected to the carrier plate. When both ends of the support post are connected to the rectifier housing and the carrier plate respectively, the support post is configured to hold the circuit board.

[0007] The support column not only supports the rectifier shell and reduces the risk of deformation caused by external forces, but also applies pressure to the circuit board when the rectifier shell and the carrier plate are connected, so as to pre-tighten the circuit board, which helps to improve the stability of the circuit board fixation and the vibration resistance.

[0008] In some embodiments of this application, the rectifier housing is provided with a fixing member along the penetration direction of the support column. The fixing member is configured to simultaneously fix the power device in the circuit board when the support column is fixedly connected to the carrier plate.

[0009] On the one hand, since the fasteners and support columns are aligned in the same direction, the fasteners can simultaneously secure the power devices on the circuit board when the support columns are fixedly connected to the carrier plate, eliminating the need for complex installation steps and improving the assembly efficiency of the shielding components and the circuit board. On the other hand, the fasteners enable dual fixation of the circuit board (specifically, fixation between the circuit board and the carrier plate, and fixation between the power devices on the circuit board and the rectifier housing), which strengthens the locking of the shielding components to the circuit board, further improves the stability of the circuit board installation, and reduces the risk of the circuit board falling off due to vibration or impact.

[0010] In some embodiments of this application, the shielding cover has a first snap-fit ​​portion at the edge of the opening, and the outer contour edge of the carrier plate has a second snap-fit ​​portion. The second snap-fit ​​portion is configured to engage with the first snap-fit ​​portion when the shielding cover is placed over the rectifier shell.

[0011] By setting the first and second snap-fit ​​parts, the shielding cover can be double-fixed (specifically, the shielding cover is fixedly connected to the housing and snap-fitted to the carrier plate), which helps to better reduce the risk of the shielding cover falling off due to external forces, thereby improving the stability of the shielding cover installation and ensuring that the shielding assembly always stably shields the electromagnetic fields generated by the power devices in the circuit board.

[0012] In some embodiments of this application, the rectifier housing is provided with an assembly portion configured for mounting an external cooling fan. The rectifier housing also has a through hole communicating with a heat dissipation channel, the through hole being configured to be opposite to the cooling fan, so that external air can enter the heat dissipation channel along the through hole or flow out of the heat dissipation channel under the action of the cooling fan.

[0013] By pre-setting mounting parts and through holes on the rectifier housing, production and installation personnel do not need complicated drilling and cutting operations. They can simply lock the cooling fan directly onto the rectifier housing, which reduces the installation difficulty of the cooling fan and improves assembly efficiency. When the cooling fan is working, external air can enter or exit the heat dissipation channel along the through holes under the action of the cooling fan, thereby realizing air circulation within the heat dissipation channel and improving the heat dissipation effect of the shielding components on the circuit board.

[0014] In some embodiments of this application, the shielding assembly further includes a liner, which is installed in the assembly space and abuts against the rectifier housing, and the liner and the rectifier housing together form a heat dissipation channel.

[0015] By setting up a liner and using the liner and the rectifier shell to form a heat dissipation channel together, the overall weight of the rectifier shell can be reduced. For example, the rectifier shell can be made of a material with high structural strength and not easily deformed (which is heavier), while the liner can be made of a lightweight material, which is beneficial to the lightweight design of energy storage equipment.

[0016] In some embodiments of this application, the rectifier housing has a guide ramp in the heat dissipation channel, and the guide ramp is configured to gradually approach the circuit board along the flow direction of the external air.

[0017] By setting the guide ramp, firstly, the flow rate of external air can be slowed down, reducing the risk of external air loss caused by airflow separation and vortex formation at the corner of the heat dissipation channel. Secondly, it can accurately guide external air to the power devices on the circuit board, which is conducive to improving the heat dissipation effect of the shielding components.

[0018] In some embodiments of this application, the rectifier housing is further provided with multiple diverter plates in the heat dissipation channel. The multiple diverter plates are spaced apart on the guide slope, and a diversion channel is formed between two adjacent diverter plates. The diversion channel is configured to guide external air to different positions on the circuit board.

[0019] By setting up the diverter, the entire airflow can be divided into multiple smaller airflows, which then flow along the corresponding diverter channels to different locations on the circuit board. This achieves heat dissipation for power devices at different locations on the circuit board, reduces the risk of localized overheating (specifically, some power devices have high heat output while others have low heat output), and helps to improve the heat dissipation effect of the shielding components.

[0020] One embodiment of this application provides an inverter control module. The inverter control module includes a circuit board and a shielding assembly as described in any of the above embodiments, with the circuit board mounted within an assembly space in the shielding assembly.

[0021] The aforementioned inverter control module employs the shielding assembly described above. This shielding assembly not only provides electromagnetic shielding for the power devices on the circuit board through its shielding cover, but also supports the circuit board through a carrier plate and dissipates heat from the power devices via heat dissipation channels constructed in the top space of the circuit board. Furthermore, the shielding cover, rectifier shell, and carrier plate together form a cage-like structure (i.e., a cage-like shielding assembly), possessing superior structural strength. When the inverter control module experiences a collision or impact, the cage-like shielding assembly effectively withstands external forces, protecting the circuit board inside, improving the stability of the circuit board installation and its vibration resistance, thereby enhancing the stability of the inverter control module.

[0022] One embodiment of this application provides an energy storage device. The energy storage device includes a housing, a battery pack, and the aforementioned inverter control module. Both the battery pack and the inverter control module are installed inside the housing, and the battery pack is connected to the inverter control module.

[0023] The aforementioned inverter equipment employs the aforementioned inverter control module. The shielding component in the inverter control module not only provides electromagnetic shielding for the power devices on the circuit board through the shielding cover, but also supports the circuit board through the carrier plate and dissipates heat from the power devices through heat dissipation channels constructed in the top space of the circuit board. Furthermore, the shielding cover, rectifier shell, and carrier plate together form a cage-like structure (i.e., a cage-like shielding component), possessing superior structural strength. When the inverter control module experiences a collision or impact, the cage-like shielding component effectively withstands external forces, protecting the circuit board inside, improving the stability of the circuit board installation and its vibration resistance, thereby enhancing the stability of the inverter equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0025] Figure 1 A schematic diagram of the structure of an energy storage device is provided for one embodiment of this application;

[0026] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the energy storage device shown in the figure;

[0027] Figure 3 for Figure 2 A schematic diagram of the inverter control module in the energy storage device shown in the figure;

[0028] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the inverter control module;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure after the middle load-bearing plate and the shielding cover are assembled;

[0030] Figure 6 for Figure 3 A schematic diagram of the structure of the inverter control module after being cut along section line III-III;

[0031] Figure 7 for Figure 3 Enlarged view of a portion of point A in the middle;

[0032] Figure 8 for Figure 4A schematic diagram of the structure of the intermediate rectifier shell.

[0033] Explanation of key component symbols:

[0034] 100. Energy storage device; 200. Cooling fan; 10. Housing; 20. Battery pack; 30. Inverter control module; 31. Circuit board; 32. Shielding assembly; 311. Power device; 321. Support plate; 322. Rectifier housing; 323. Assembly space; 324. Heat dissipation channel; 325. Shielding cover; 326. Support column; 327. Liner; 3211. Second snap-fit ​​part; 3221. Fixing component; 3222. Assembly part; 3223. Through hole; 3224. Guide slope; 3225. Diverter plate; 3226. Diverter channel; 3251. First snap-fit ​​part. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0037] Energy storage devices are used to store energy and release it when needed. Some energy storage devices include inverter control modules to achieve integrated charging and inverter operation. Existing shielding is usually a metal shell built around the inverter control module; however, the metal shell only has a shielding function and its overall function is relatively simple.

[0038] One embodiment of this application provides a shielding assembly. The shielding assembly is applied to an inverter control module, which includes a circuit board. The shielding assembly includes a carrier plate, a rectifier housing, and a shielding cover with an opening. The carrier plate is constructed as a sheet metal part. The rectifier housing is mounted on the carrier plate, and the rectifier housing and the carrier plate together form an assembly space. The assembly space is configured for mounting the circuit board. Within the assembly space, the rectifier housing is configured to create a heat dissipation channel in the top space of the circuit board. The shielding cover is disposed on the rectifier housing and fixedly connected to the rectifier housing, with the edge of the shielding cover at the opening connecting to the outer contour edge of the carrier plate.

[0039] The aforementioned shielding assembly not only provides electromagnetic shielding for the power devices on the circuit board through the shielding cover, but also supports the circuit board through the carrier plate and dissipates heat from the power devices through the heat dissipation channels constructed in the top space of the circuit board. Furthermore, the shielding cover, rectifier shell, and carrier plate in this application collectively constitute a cage-like structure (i.e., forming a cage-like shielding assembly), which possesses superior structural strength. When the inverter control module experiences a collision or impact, the cage-like shielding assembly can effectively withstand external forces, protecting the circuit board inside the cage-like shielding assembly and improving the stability and vibration resistance of the circuit board installation.

[0040] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Please refer to the following: Figure 1 and Figure 2 One embodiment of this application provides an energy storage device 100. The energy storage device has the functions of storing and discharging electricity for use as backup power for homes, production facilities, outdoor work, and outdoor recreation. In some embodiments, the energy storage device 100 includes a housing 10 and a battery pack 20, wherein the battery pack 20 may be installed inside the housing 10, and the battery pack 20 is used to store and supply electricity to the energy storage device 100.

[0042] In some embodiments, the energy storage device 100 further includes a power conversion module (not shown), which is electrically connected to the battery pack 20. The power conversion module is used to control the AC / DC conversion of the output current of the battery pack 20. The energy storage device 100 equipped with the power conversion module can be a small portable power supply, a residential energy storage power supply, an industrial or commercial energy storage power supply, or a containerized energy storage power supply, etc.

[0043] In some embodiments, the power conversion module may be omitted. An energy storage device 100 without a power conversion module can be used independently. An energy storage device 100 without a power conversion module typically only outputs DC power. When used independently, an energy storage device 100 without a power conversion module can be used in conjunction with an energy storage device 100 with a power conversion module as a power system providing additional battery capacity.

[0044] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the energy storage device 100 further includes an inverter control module 30, which is installed inside the housing 10 and electrically connected to the battery pack 20. The battery pack 20 can also be used as a standalone device to output DC power, or it can be stacked together with the inverter control module 30.

[0045] In some embodiments, the inverter control module 30 includes a circuit board 31 and a shielding assembly 32. The circuit board 31 is mounted inside the shielding assembly 32 and connected to the battery pack 20. The circuit board 31 is used to control the charging and discharging of the battery pack 20, and the shielding assembly 32 is configured to shield the electromagnetic fields of the power devices 311 in the circuit board 31.

[0046] Please refer to the following: Figures 3 to 5 In some embodiments, the shielding assembly 32 includes a carrier plate 321, a rectifier housing 322, and a shielding cover 325 having an opening (not shown). The carrier plate 321 is mounted on the housing 10 and is constructed as a sheet metal part.

[0047] For example, the support plate 321 is a steel plate with a thickness of 0.5 mm. The support plate 321 is welded to the inner wall of the outer casing 10. By adopting a welding installation method, the connection strength is high.

[0048] In other embodiments, the support plate 321 may also be a sheet metal part made of other metal materials such as aluminum or stainless steel. The support plate 321 may also be installed by other methods such as threaded connection or bonding. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0049] In some embodiments, the rectifier housing 322 is mounted on the support plate 321, and the rectifier housing 322 and the support plate 321 together form an assembly space 323. The circuit board 31 is mounted on the support plate 321 and located within the assembly space 323. The support plate 321 can support the circuit board 31.

[0050] It is worth noting that the circuit board 31 may be entirely located within the assembly space 323 or partially located within the assembly space 323. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0051] Please see Figure 5 In some embodiments, within the assembly space 323, the rectifier housing 322 constructs a heat dissipation channel 324 in the top space of the circuit board 31. It is worth noting that the aforementioned top space specifically refers to the space on the side of the circuit board 31 facing away from the support plate 321.

[0052] When the power device 311 in the circuit board 31 generates heat due to prolonged operation, the air in the heat dissipation channel 324 can absorb the heat from the power device 311, thereby reducing its temperature. The heat dissipation channel 324 effectively dissipates heat from the power device 311 in the circuit board 31, ensuring its stable operation.

[0053] Please continue to refer to the following: Figures 3 to 5In some embodiments, the shield 325 is disposed over the rectifier shell 322 and fixedly connected to the rectifier shell 322. The edge of the shield 325 at the opening is connected to the outer contour edge of the support plate 321 so that the shield 325, the rectifier shell 322 and the support plate 321 can form a cage-like structure.

[0054] The shielding cover 325 provides electromagnetic shielding for the power devices 311 in the circuit board 31. Furthermore, the shielding cover 325, the rectifier shell 322, and the support plate 321 together form a cage-like structure (i.e., a cage-like shielding assembly 32), which has superior structural strength.

[0055] When the inverter control module 30 is involved in a collision or impact, the cage shielding assembly 32 can effectively resist the external force to protect the circuit board 31 inside the cage shielding assembly 32, thereby improving the stability and vibration resistance of the circuit board 31 during installation.

[0056] The shielding component 32 provided in this application can not only provide electromagnetic shielding for the power devices 311 in the circuit board 31 through the shielding cover 325, but also support the circuit board 31 through the carrier plate 321 and dissipate heat for the power devices 311 in the circuit board 31 through the heat dissipation channel 324 constructed in the top space of the circuit board 31.

[0057] In short, the shielding component 32 of this application can realize multiple functions such as electromagnetic shielding, support and heat dissipation, thereby improving the functional diversity of the shielding component 32.

[0058] Please see Figure 5 In some embodiments, the shielding assembly 32 further includes a support post 326, one end of which is mounted on the rectifier housing 322, and the other end of which passes through the circuit board 31 and is fixedly connected to the carrier plate 321. When both ends of the support post 326 are connected to the rectifier housing 322 and the carrier plate 321 respectively, the support post 326 is configured to hold the circuit board 31.

[0059] The support column 326 not only supports the rectifier shell 322 and reduces the risk of deformation of the rectifier shell 322 due to external forces, but also applies pressure to the circuit board 31 when the rectifier shell 322 and the bearing plate 321 are connected, so as to pre-tighten the circuit board 31, which helps to improve the stability of the circuit board 31 and its vibration resistance.

[0060] In some embodiments, the rectifier housing 322 is provided with a fixing member 3221 along the through direction of the support column 326. The fixing member 3221 is configured to simultaneously fix the power device 311 in the circuit board 31 when the support column 326 is fixedly connected to the carrier plate 321.

[0061] On the one hand, since the fastener 3221 and the support column 326 are arranged in the same direction, when the support column 326 is fixedly connected to the bearing plate 321, the fastener 3221 can be simultaneously fixedly connected to the power device 311 in the circuit board 31 without complicated installation steps, which is conducive to improving the assembly efficiency of the shielding component 32 and the circuit board 31.

[0062] On the other hand, the setting of the fastener 3221 can achieve dual fixation of the circuit board 31 (specifically, the fixation between the circuit board 31 and the carrier plate 321, and the fixation between the power device 311 in the circuit board 31 and the rectifier shell 322), which is conducive to strengthening the locking of the shielding component 32 to the circuit board 31, improving the stability of the circuit board 31 installation, and reducing the risk of the circuit board 31 falling off due to vibration or impact.

[0063] Please refer to the following: Figure 5 and Figure 7 In some embodiments, the shielding cover 325 has a first snap-fit ​​portion 3251 at the edge of the opening, and the outer contour edge of the support plate 321 has a second snap-fit ​​portion 3211. When the shielding cover 325 is placed over the rectifier shell 322, the second snap-fit ​​portion 3211 engages with the first snap-fit ​​portion 3251.

[0064] By setting the first snap-fit ​​part 3251 and the second snap-fit ​​part 3211, the shielding cover 325 can be double-fixed (specifically, the shielding cover 325 is fixedly connected to the housing and snap-fitted to the carrier plate 321). This helps to better reduce the risk of the shielding cover 325 falling off due to external force, thereby improving the stability of the installation of the shielding cover 325 and ensuring that the shielding assembly 32 always stably shields the electromagnetic field generated by the power device 311 in the circuit board 31.

[0065] In other embodiments, other connection methods such as magnetic attraction and adhesion may be used. This application does not limit the methods, and those skilled in the art can choose according to the actual situation.

[0066] Please refer to the following: Figure 3 , Figure 6 and Figure 8 In some embodiments, the rectifier housing 322 is provided with an assembly portion 3222, which is configured for mounting an external cooling fan 200. The rectifier housing 322 also has a through hole 3223 communicating with the heat dissipation channel 324. The through hole 3223 is configured to be opposite to the cooling fan 200 so that external air can enter the heat dissipation channel 324 along the through hole 3223 or flow out of the heat dissipation channel 324 under the action of the cooling fan 200.

[0067] By pre-setting the assembly part 3222 and the through hole 3223 on the rectifier housing 322, production and installation personnel do not need complicated drilling, cutting and other operations. They can simply lock the cooling fan 200 directly onto the rectifier housing 322, which helps to reduce the installation difficulty of the cooling fan 200 and improve assembly efficiency.

[0068] Understandably, when the cooling fan 200 is working, the cold air from outside can enter the heat dissipation channel 324 through the through hole 3223 under the action of the cooling fan 200. The warmer air in the heat dissipation channel 324 will flow out of the heat dissipation channel 324 through the through hole 3223 under the action of the cooling fan 200, so as to realize the air circulation in the heat dissipation channel 324.

[0069] This can improve the heat dissipation effect of the shielding component 32 on the circuit board 31 and extend the service life of the circuit board 31.

[0070] Please refer to the following: Figure 3 and Figure 5 In some embodiments, the shielding assembly 32 further includes a liner 327, which is installed in the assembly space 323 and abuts against the rectifier housing 322. The liner 327 and the rectifier housing 322 together form a heat dissipation channel 324.

[0071] By using the liner 327 and the rectifier housing 322 to form a heat dissipation channel 324, the overall weight of the rectifier housing 322 can be reduced, which is beneficial for the lightweight design of the energy storage device 100. For example, the rectifier housing 322 can be made of a material with high structural strength and resistance to deformation (which results in greater weight), while the liner 327 can be made of a lightweight material.

[0072] Please refer to the following: Figure 6 and Figure 8 In some embodiments, the rectifier housing 322 has a guide ramp 3224 in the heat dissipation channel 324, and the guide ramp 3224 is configured to gradually approach the circuit board 31 along the flow direction of the external air.

[0073] By setting the guide ramp 3224, firstly, the flow rate of external air can be slowed down, reducing the risk of external air loss caused by airflow separation and vortex formation at the corner of the heat dissipation channel 324; secondly, external air can be accurately guided to the power device 311 of the circuit board 31, which is conducive to better heat dissipation of the shielding component 32.

[0074] In some embodiments, within the heat dissipation channel 324, the rectifier housing 322 is further provided with a plurality of diverter plates 3225, the plurality of diverter plates 3225 being spaced apart on the guide slope 3224, and a diverter channel 3226 being formed between two adjacent diverter plates 3225, the diverter channel 3226 being configured to guide external air to different positions on the circuit board 31.

[0075] By setting the diverter plate 3225, the entire airflow can be divided into multiple smaller airflows, which flow along the corresponding diverter channels 3226 to different positions on the circuit board 31. This achieves heat dissipation for the power devices 311 at different positions on the circuit board 31, reduces the risk of local overheating on the circuit board 31 (specifically, some power devices 311 have high heat and some power devices 311 have low heat), and helps to better improve the heat dissipation effect of the shielding component 32.

[0076] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A shielding component applied to an inverter control module, the inverter control module comprising a circuit board, characterized in that, The shielding component includes: The load-bearing plate is constructed as a sheet metal component; A rectifier housing is mounted on the support plate, and the rectifier housing and the support plate together form an assembly space, which is configured to accommodate the circuit board. Within the assembly space, the rectifier housing is configured to create a heat dissipation channel in the top space of the circuit board. A shield with an opening is provided on the rectifier shell and fixedly connected to the rectifier shell, wherein the edge of the shield at the opening is connected to the outer contour edge of the support plate.

2. The shielding assembly according to claim 1, characterized in that, The shielding assembly further includes a support column, one end of which is mounted on the rectifier housing, and the other end of which is configured to pass through the circuit board and be fixedly connected to the carrier plate. When both ends of the support column are connected to the rectifier housing and the carrier plate respectively, the support column is configured to press the circuit board.

3. The shielding assembly according to claim 2, characterized in that, The rectifier housing is provided with a fixing member along the through direction of the support column. The fixing member is configured to simultaneously fix the power device in the circuit board when the support column is fixedly connected to the bearing plate.

4. The shielding assembly according to any one of claims 1 to 3, characterized in that, The shielding cover has a first snap-fit ​​portion at the edge of the opening, and the outer contour edge of the bearing plate has a second snap-fit ​​portion. The second snap-fit ​​portion is configured to engage with the first snap-fit ​​portion when the shielding cover is placed over the rectifier shell.

5. The shielding assembly according to any one of claims 1 to 3, characterized in that, The rectifier housing is provided with an assembly section, which is configured to accommodate an external cooling fan. The rectifier housing also has a through hole that communicates with the heat dissipation channel. The through hole is configured to be opposite to the cooling fan so that external air can enter the heat dissipation channel along the through hole or flow out of the heat dissipation channel under the action of the cooling fan.

6. The shielding assembly according to claim 5, characterized in that, The shielding assembly also includes a liner, which is installed in the assembly space and abuts against the rectifier housing. The liner and the rectifier housing together form the heat dissipation channel.

7. The shielding assembly according to claim 5, characterized in that, The rectifier housing has a guide ramp inside the heat dissipation channel, and the guide ramp is configured to gradually approach the circuit board along the flow direction of the external air.

8. The shielding assembly according to claim 7, characterized in that, Within the heat dissipation channel, the rectifier housing is further provided with multiple flow dividers. The multiple flow dividers are spaced apart on the guide slope, and a flow divider channel is formed between two adjacent flow dividers. The flow divider channel is configured to guide the external air to different positions on the circuit board.

9. An inverter control module, characterized in that, It includes a circuit board and a shielding assembly as described in any one of claims 1 to 8, wherein the circuit board is mounted within the assembly space of the shielding assembly.

10. An energy storage device, characterized in that, The energy storage device includes a housing, a battery pack, and an inverter control module as described in claim 9, wherein the battery pack and the inverter control module are both installed inside the housing, and the battery pack is connected to the inverter control module.

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