Power conversion device

Abstract

The utility model provides a power conversion device. The power conversion equipment comprises a box body and a power assembly. The box body comprises a shell and a cover plate, in the first direction, the cover plate is installed on one side of the shell, and an accommodating cavity is defined by the cover plate and the shell. The power assembly is accommodated in the accommodating cavity. The power assembly comprises a circuit board and a power module, in the first direction, the power module is installed on one side of the circuit board and faces the shell, and the power module makes contact with the shell. Wherein one side of the shell is provided with a groove, the groove extends along a first direction and is provided with a first opening, the first opening of the groove is opposite to the power module in the first direction, and the groove is internally provided with a plurality of first bulges which are arranged at intervals. According to the power conversion equipment provided by the invention, on the basis of ensuring the heat dissipation efficiency of the power module, the space utilization rate of the box body is greatly improved, the size of the power conversion equipment in the first direction is reduced, and the miniaturization design of the power conversion equipment is facilitated.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a power conversion device. Background Art

[0002] In existing power conversion devices, the power module is housed in a housing, with a heat sink stacked outside the housing. Heat generated by the power module during operation is transferred to the outside through the heat sink. However, because both the heat sink and the housing require space, existing power conversion devices are bulky and difficult to miniaturize. Utility Model Content

[0003] The present application provides a power conversion device, which aims to solve the problem that the power conversion device is large in size and not convenient for miniaturization design.

[0004] In a first aspect, an embodiment of the present application provides a power conversion device. The power conversion device includes a housing and a power component. The housing includes a shell and a cover. In a first direction, the cover is mounted on one side of the shell and encloses the shell to form a receiving cavity. The power component is received in the receiving cavity. The power component includes a circuit board and a power module. In the first direction, the power module is mounted on one side of the circuit board and faces the shell, and the power module is in contact with the shell. A groove is provided on one side of the shell, and the groove extends along the first direction and has a first opening. In the first direction, the first opening of the groove faces away from the power module. A plurality of first protrusions are provided in the groove, and the plurality of first protrusions are arranged at intervals.

[0005] In the power conversion device provided in the embodiments of the present application, heat generated by the power module during operation is transferred to the exterior of the housing via the housing and the multiple first protrusions, thereby achieving rapid heat dissipation of the power module. The design of the multiple first protrusions is conducive to increasing the heat dissipation area through which heat generated by the power module during operation is transferred to the exterior of the housing via the housing, thereby increasing the efficiency of heat transfer from the power module during operation via the housing to the exterior of the housing, and thereby improving the heat dissipation efficiency of the power module.

[0006] Compared with existing power conversion equipment, the power conversion equipment provided by the present application, since multiple first protrusions are accommodated in the groove, greatly improves the space utilization of the box while ensuring the heat dissipation efficiency of the power module, which is beneficial to reducing the size of the power conversion equipment in the first direction and is beneficial to the miniaturized design of the power conversion equipment.

[0007] In a possible implementation manner, a projection of the power module in the first direction overlaps with projections of the plurality of first protrusions in the first direction.

[0008] The design in which the projection of the power module in the first direction overlaps with the projections of the multiple first protrusions in the first direction is conducive to shortening the heat dissipation path between the power module and the first protrusions, and is conducive to improving the efficiency of transferring the heat generated by the power module during operation from the multiple first protrusions to the outside of the box, which is conducive to improving the heat dissipation efficiency of the power module.

[0009] In a possible implementation, the groove extends along the second direction and has a second opening, the plurality of first protrusions are exposed to the outside of the box from the first opening and the second opening, and the second direction is perpendicular to the first direction.

[0010] The groove extends along the first direction and has a first opening, and the groove extends along the second direction and has a second opening. This design ensures that the multiple first protrusions can be exposed to the outside of the box from the first opening and the second opening, which is beneficial to increasing the contact area between the first protrusions and the environment outside the box, and is beneficial to improving the efficiency of transferring the heat generated by the power module during operation to the outside of the box through the multiple first protrusions, which is beneficial to improving the heat dissipation efficiency of the power module.

[0011] In one possible embodiment, the shell includes a main shell and a connecting shell. In the second direction, the connecting shell is arranged on one side of the main shell. In the first direction, the cover plate is installed on one side of the main shell and the connecting shell. The cover plate, the connecting shell and the main shell are combined to form a receiving cavity. The power module is in contact with the main shell, and the groove is arranged on the main shell. The connecting shell is provided with a matching through hole, which passes through the connecting shell along the second direction and is connected to the second opening.

[0012] The design of the through hole and the second opening can avoid the connecting shell covering the second opening of the groove, ensuring that the heat generated by the power module during operation can be transferred from the second opening to the outside of the box through the multiple first protrusions, which is beneficial to improving the efficiency of transferring the heat generated by the power module during operation to the outside of the box through the multiple first protrusions, and is beneficial to improving the heat dissipation efficiency of the power module.

[0013] In one possible embodiment, the main shell includes a first part, a second part, a third part and a fourth part. In the first direction, the second part is arranged opposite to the first part. In the third direction, the second part is located on one side of the first part, and the third part is arranged between the first part and the second part. In the third direction, the fourth part is arranged on one side of the first part and faces away from the third part. The second part and the fourth part are both mounted on the cover plate. In the first direction, the power module is fixedly stacked on one side of the first part and faces away from the second part. The first part and the third part are combined to form a groove. In the first direction, multiple first protrusions are arranged on one side of the first part and face away from the power module. The third direction is arranged perpendicular to the second direction and the first direction.

[0014] Heat generated by the power module during operation is transferred to the exterior of the housing via the first portion of the main housing and the plurality of first protrusions. The design of the power module being fixedly stacked with the first portion of the main housing increases the contact area between the power module and the first portion, improves the efficiency of heat generated by the power module during operation being transferred to the plurality of first protrusions via the first portion, and improves the efficiency of heat dissipation from the power module via the plurality of first protrusions.

[0015] In one possible embodiment, a receiving groove is provided on one side of the connecting shell, the receiving groove extends along the second direction and has an opening, and in the second direction, the opening of the receiving groove faces the main shell, and the power conversion device includes a connecting part, which is received in the receiving groove, and the connecting part is fixedly stacked with the main shell.

[0016] The design of the connector helps to improve the connection strength between the connecting housing and the main housing, and helps to improve the structural stability of the housing. It also has a simple structure, is easy to design, and helps to reduce processing costs. The design of the connector being accommodated in the receiving groove helps to improve the space utilization of the connecting housing, avoids the connector occupying additional space in the second direction, helps to reduce the size of the housing in the second direction, and promotes the miniaturization design of the housing and the miniaturization design of the power conversion device.

[0017] In one possible embodiment, the main shell is provided with a mounting hole, the mounting hole extends along the second direction, the connecting shell is provided with a connecting hole, the connecting hole passes through the connecting shell along the second direction, the connecting hole is connected to the mounting hole, and the power conversion device includes a fastener, which is installed in the mounting hole and the connecting hole.

[0018] Since the fasteners are installed in the mounting holes and the connecting holes, the connecting shell is fixedly connected to the main shell, the structure is simple and stable, and the design is convenient, which is conducive to reducing processing costs.

[0019] In one possible embodiment, the connecting shell is provided with a hanging groove, which is located on one side of the matching through hole in the third direction, extends along the third direction and has an opening, and in the third direction, the opening of the hanging groove faces the matching through hole.

[0020] The connecting housing can be mounted on an external component via the mounting slot, thereby enabling the housing to be mounted on an external component, and the power conversion device to be mounted on an external component via the mounting slot, thus meeting the mounting requirements of the power conversion device. The mounting slot provided in the connecting housing eliminates the need for additional mounting components, simplifies the structure, reduces the structural complexity of the power conversion device, and reduces the processing cost of the power conversion device.

[0021] In a possible embodiment, the connection shell is provided with an operation hole, which passes through the connection shell along the second direction. The operation hole and the matching through hole are spaced apart. The projection of the operation hole in the second direction is spaced apart from the projection of the receiving cavity in the second direction.

[0022] The connection housing can be grasped through the operation hole, thereby facilitating grasping the power conversion device and transporting the power conversion device. The design of the operation hole facilitates transporting the power conversion device, and the structure is simple and stable, easy to design, and helps reduce processing costs.

[0023] In one possible embodiment, the power conversion device includes an air guide cover, which is arranged on one side of the multiple first protrusions and faces away from the shell in a first direction. The air guide cover covers the first opening of the groove. The air guide cover is provided with an air inlet hole, which extends along the first direction and is connected to the first opening. The multiple first protrusions are exposed to the outside of the air guide cover from the second opening of the groove.

[0024] The air inlet is connected to the first opening, and the multiple first protrusions are exposed to the outside of the air guide cover through the second opening of the groove. This design ensures that heat dissipation air can flow from the outside of the air guide cover through the air inlet to the multiple first protrusions, and then out of the air guide cover through the second opening, thereby dissipating heat from the multiple first protrusions and, in turn, the power module. The design of the air guide cover can guide the heat dissipation air, which is beneficial for improving the heat dissipation efficiency of the multiple first protrusions and the power module.

[0025] In one possible embodiment, the power component includes an inductor. In a first direction, the inductor is installed on one side of the circuit board and faces the housing. In a third direction, the inductor is located on one side of the groove and is spaced apart from the groove. The projection of the inductor in the third direction overlaps with the projection of the groove in the third direction, and the third direction is arranged perpendicular to the first direction.

[0026] The design of the projection of the inductor in the third direction overlapping with the projection of the groove in the third direction is conducive to reducing the size of the box in the first direction, improving the space utilization of the box, facilitating the miniaturization design of the box, facilitating the miniaturization design of the power conversion equipment, and improving the power density of the power conversion equipment.

[0027] In one possible embodiment, a plurality of second protrusions are provided on one side of the shell, and the plurality of second protrusions are arranged at intervals. In the first direction, the plurality of second protrusions face away from the inductor, and the projection of the inductor in the first direction overlaps with the projection of the plurality of second protrusions in the first direction.

[0028] The heat generated by the inductor during operation can be transferred to the exterior of the housing through the housing and the multiple second protrusions, thereby dissipating heat from the inductor. The multiple second protrusions increase the heat dissipation area through which the heat generated by the inductor during operation is transferred to the exterior of the housing through the housing, thereby increasing the efficiency of heat transfer from the inductor to the exterior of the housing through the housing, and thereby improving the efficiency of heat dissipation from the inductor. The overlapping projection of the inductor in the first direction and the projection of the multiple second protrusions in the first direction shorten the heat dissipation path between the inductor and the second protrusions, thereby increasing the efficiency of heat transfer from the multiple second protrusions to the exterior of the housing, and thereby improving the efficiency of heat dissipation from the inductor.

[0029] In one possible embodiment, the power component includes an auxiliary module. In a first direction, the auxiliary module is installed on one side of the circuit board and faces the shell. In a third direction, the auxiliary module is located on one side of the inductor and faces away from the groove. The projection of the auxiliary module in the third direction overlaps with the projection of the groove in the third direction.

[0030] The design of the projection of the auxiliary module in the third direction and the overlapping projection of the groove in the third direction is conducive to reducing the size of the box in the first direction, improving the space utilization of the box, facilitating the miniaturization design of the box, facilitating the miniaturization design of the power conversion equipment, and improving the power density of the power conversion equipment.

[0031] In a possible implementation, a partition is provided on one side of the housing. In a first direction, the partition faces the cover plate. In a third direction, the partition is located between the auxiliary module and the inductor.

[0032] The design of the separator acts as a heat shield, preventing a large amount of heat generated by the inductor during operation from being transferred to the auxiliary module, which is beneficial to reducing the thermal crosstalk between the inductor and the auxiliary module, and preventing a large amount of heat generated by the auxiliary module during operation from being transferred to the inductor, which is beneficial to reducing the thermal crosstalk between the auxiliary module and the inductor, and is beneficial to improving the performance of the inductor and the auxiliary module.

[0033] In one possible embodiment, a plurality of third protrusions are provided on one side of the shell, and the plurality of third protrusions are arranged at intervals. In the first direction, the plurality of third protrusions face away from the auxiliary module, and the projection of the auxiliary module in the first direction overlaps with the projection of the plurality of third protrusions in the first direction.

[0034] The heat generated by the auxiliary module during operation can be transferred to the outside of the case through the shell and the multiple third protrusions, thereby achieving heat dissipation of the auxiliary module. The design of the multiple third protrusions is conducive to increasing the heat dissipation area of ​​the heat generated by the auxiliary module during operation and transferred to the outside of the case through the shell, which is conducive to improving the efficiency of transferring the heat generated by the auxiliary module during operation and transferred to the outside of the case through the shell, and is conducive to improving the heat dissipation efficiency of the auxiliary module. The design of the auxiliary module's projection in the first direction overlapping with the projection of the multiple third protrusions in the first direction is conducive to shortening the heat dissipation path between the auxiliary module and the third protrusions, which is conducive to improving the efficiency of transferring the heat generated by the auxiliary module during operation from the multiple third protrusions to the outside of the case, and is conducive to improving the heat dissipation efficiency of the auxiliary module.

[0035] In one possible embodiment, the power component includes a capacitor. In a first direction, the capacitor is installed on one side of the circuit board and faces the shell. In a third direction, the capacitor is located on one side of the groove and is spaced apart from the groove. The projection of the capacitor in the third direction overlaps with the projection of the groove in the third direction, and the third direction is arranged perpendicular to the first direction.

[0036] The design of the projection of the capacitor in the third direction overlapping with the projection of the groove in the third direction is conducive to reducing the size of the box in the first direction, improving the space utilization of the box, facilitating the miniaturization design of the box, facilitating the miniaturization design of the power conversion equipment, and improving the power density of the power conversion equipment.

[0037] In one possible embodiment, a plurality of fourth protrusions are provided on one side of the shell, and the plurality of fourth protrusions are arranged at intervals. In the first direction, the plurality of fourth protrusions face back to the capacitor, and the projection of the capacitor in the first direction overlaps with the projection of the plurality of fourth protrusions in the first direction.

[0038] The heat generated by the capacitor during operation can be transferred to the outside of the case through the housing and the multiple fourth protrusions, thereby achieving heat dissipation of the capacitor. The design of the multiple fourth protrusions is conducive to increasing the heat dissipation area of ​​the heat generated by the capacitor during operation and transferred to the outside of the case through the housing, and is conducive to improving the efficiency of heat transfer from the capacitor during operation to the outside of the case through the housing, and is conducive to improving the heat dissipation efficiency of the capacitor. The design of the projection of the capacitor in the first direction overlapping with the projection of the multiple fourth protrusions in the first direction is conducive to shortening the heat dissipation path between the capacitor and the fourth protrusions, and is conducive to improving the efficiency of heat generated by the capacitor during operation and transferred from the multiple fourth protrusions to the outside of the case, and is conducive to improving the heat dissipation efficiency of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0040] Figure 1 This is a structural block diagram of a power conversion system provided by an embodiment of the present application in conjunction with a photovoltaic module and a power grid;

[0041] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the power conversion system shown;

[0042] Figure 3 yes Figure 2 The three-dimensional structure decomposition diagram of the power conversion system shown;

[0043] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure of a power conversion device of the power conversion system shown;

[0044] Figure 5 yes Figure 4 The schematic structural diagram of the power conversion device shown is cut along line AA;

[0045] Figure 6 yes Figure 4 The three-dimensional exploded schematic diagram of the power conversion device shown;

[0046] Figure 7 yes Figure 4 The exploded perspective view of the box body of the power conversion device shown in FIG.

[0047] Figure 8 yes Figure 7 The three-dimensional structure of the box shown is exploded from another angle;

[0048] Figure 9 yes Figure 8 The exploded perspective view of the housing of the box shown in FIG.

[0049] Figure 10 yes Figure 9 The three-dimensional structure of the shell shown in another angle is exploded;

[0050] Figure 11 yes Figure 4 The power conversion device shown (mounting parts and heat dissipation components omitted) is a schematic diagram of a three-dimensional structure exploded from another angle;

[0051] Figure 12 yes Figure 4 A schematic diagram of the three-dimensional structure of the heat dissipation assembly of the power conversion device (fixing parts omitted) at another angle;

[0052] Figure 13 yes Figure 12 The schematic diagram of the exploded three-dimensional structure of the heat dissipation component shown;

[0053] Figure 14 yes Figure 4 The power conversion device shown is a schematic structural diagram of another embodiment cut along AA. DETAILED DESCRIPTION

[0054] Embodiments of the present application provide a power conversion device. The power conversion device is used in a power conversion system. A power conversion system is a system for converting direct current (DC) to alternating current (AC) or vice versa. The power conversion device provided herein improves space utilization within a housing and facilitates miniaturization of the power conversion device.

[0055] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0056] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , Figure 1 This is a structural block diagram of a power conversion system 1000 provided in an embodiment of the present application in cooperation with a photovoltaic module 2000 and a power grid 3000. Figure 2 yes Figure 1 The three-dimensional structural diagram of the power conversion system 1000 is shown.

[0057] Figure 3 yes Figure 2 The schematic diagram of the three-dimensional structure explosion of the power conversion system 1000 is shown. Figure 4 yes Figure 3 The schematic diagram of the three-dimensional structure of the power conversion device 200 of the power conversion system 1000 is shown. Figure 5 yes Figure 4 The structure diagram of the power conversion device 200 shown is cut along line AA. Figure 6 yes Figure 4 The schematic diagram of the three-dimensional structure explosion of the power conversion device 200 is shown.

[0058] like Figure 1As shown, power conversion system 1000 is illustratively used to convert the direct current (DC) power output by photovoltaic module 2000 into alternating current (AC) power and supply it to power grid 3000. Power conversion system 1000 includes a carrier 100 and a power conversion device 200. Power conversion device 200 is mounted on carrier 100. Power conversion device 200 is used to convert the DC power output by photovoltaic module 2000 into alternating current (AC) power and supply it to power grid 3000. In some embodiments, power conversion device 200 is a photovoltaic inverter. In other embodiments, power conversion device 200 can also be used to convert the DC power output by photovoltaic module 2000 into AC power and supply it to a load device. The load device can include, but is not limited to, an electronic device that uses AC power, such as a motor, fan, or air conditioner. Power conversion device 200 can also be used to convert DC power output by a battery into AC power to supply the motor. Power conversion device 200 can also be a rectifier, transformer, converter, or other inverter, or other electronic device used for power conversion.

[0059] like Figure 2 and Figure 3 As shown, in some embodiments, the carrier 100 includes a carrier body 101, a fitting 102 and a reinforcement 103. In the X-axis direction, the fitting 102 is arranged on one side of the carrier body 101. Specifically, the fitting 102 is fixedly stacked on one side of the carrier body 101. Exemplarily, the number of fittings 102 is 2. In some other embodiments, the number of fittings 102 may also be 1, 3 or more. In the Y-axis direction, the two fittings 102 are oppositely and spaced apart. The reinforcement 103 is arranged between the two fittings 102. Specifically, the reinforcement 103 is fixedly stacked between the two fittings 102. The design of the reinforcement 103 is conducive to increasing the strength of the fitting 102 and improving the structural stability of the carrier 100. Among them, the fitting 102 is provided with a fitting groove 1021. The fitting groove 1021 passes through the fitting 102 along the Z-axis direction. The matching groove 1021 extends along the X-axis direction and has an opening. The opening of the matching groove 1021 faces the supporting body 101 .

[0060] For the sake of convenience of description, this application defines three mutually perpendicular directions as a first direction (i.e., the X-axis direction in the figure), a second direction (i.e., the Y-axis direction in the figure), and a third direction (i.e., the Z-axis direction in the figure). The second direction is set perpendicular to the first direction, and the third direction is set perpendicular to the first direction and the second direction.

[0061] In some embodiments, in the X-axis direction, the power conversion device 200 is located on one side of the mating member 102 and faces away from the carrier body 101. The power conversion device 200 is mounted on the mating member 102. Specifically, the power conversion device 200 is partially inserted into the mating groove 1021 of the mating member 102, and the power conversion device 200 abuts the mating member 102.

[0062] like Figure 4 、 Figure 5 and Figure 6 As shown, in some embodiments, a power conversion device 200 includes a housing 10, a power assembly 20, and a heat sink assembly 30. The power assembly 20 is housed in the housing 10. The heat sink assembly 30 is mounted on the exterior of the housing 10. The heat sink assembly 30 is used to dissipate heat from the power assembly 20. The power assembly 20 includes a circuit board 21, a power module 22, an inductor 23, an auxiliary module 24, and a capacitor 25. The power module 22, the inductor 23, the auxiliary module 24, and the capacitor 25 are all mounted on the circuit board 21. For example, there are multiple inductors 23, and specifically, there are two inductors 23. The two inductors 23 are a first inductor 23a and a second inductor 23b. In other words, the inductors 23 include a first inductor 23a and a second inductor 23b. In other embodiments, there may be multiple first inductors 23a and multiple second inductors 23b, and the total number of inductors 23 may be three, four, or more. The first inductor 23a or the second inductor 23b may also be omitted, that is, the number of the inductor 23 may also be 1. The auxiliary module 24 includes an input module 241 , an output module 242 and a functional module 243 , all of which are mounted on the circuit board 21 .

[0063] like Figure 1 、 Figure 2 and Figure 3 As shown, the housing 10 is mounted on the mating member 102. Specifically, the housing 10 is partially inserted into the mating groove 1021 of the mating member 102, and the housing 10 and the mating member 102 are in contact. The DC power output by the photovoltaic module 2000 is transmitted through the input module 241 and the circuit board 21 to the first inductor 23a. The first inductor 23a is used to boost the DC power output by the photovoltaic module 2000. The DC power boosted by the first inductor 23a is transmitted to the power module 22 via the circuit board 21. The power module 22 is used to convert the DC power into AC power. The AC power output by the power module 22 is transmitted to the second inductor 23b via the circuit board 21. The second inductor 23b is used to filter the AC power output by the power module 22. The AC power processed by the second inductor 23b is transmitted from the output module 242 via the circuit board 21 to the power grid 3000 to supply the power grid 3000. The functional module 243 can be used to supply energy to the power conversion device 200 , that is, the functional module 243 is an auxiliary source. In some other embodiments, the functional module 243 can also be used to sample and monitor the direct current received by the power module 22 .

[0064] Among them, the power module 22 converts direct current into alternating current by continuously opening and closing, thereby realizing the power conversion function. The capacitor 25 is used to buffer the power module 22 to ensure that the power module 22 can convert direct current into alternating current. Specifically, when the power module 22 is closed, the direct current after the boosting process by the first inductor 23a can not only be transmitted to the power module 22 via the circuit board 21, but also be transmitted to the capacitor 25 via the circuit board 21 to charge the capacitor 25. When the power module 22 is opened, the capacitor 25 discharges to serve the power module 22 function, thereby ensuring that the power module 22 can always operate stably during the process of converting direct current into alternating current, and the power module 22 can stably convert direct current into alternating current to realize the power conversion function.

[0065] See also Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , and combined with Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , Figure 7 yes Figure 4 The schematic diagram of the exploded three-dimensional structure of the housing 10 of the power conversion device 200 is shown. Figure 8 yes Figure 7 The box body 10 is shown as a schematic exploded perspective view of the three-dimensional structure at another angle. Figure 9 yes Figure 8 The schematic diagram of the exploded three-dimensional structure of the shell 11 of the box body 10 is shown. Figure 10 yes Figure 9 The shown schematic diagram is a three-dimensional exploded view of the housing 11 at another angle.

[0066] like Figure 5 、 Figure 7 and Figure 8 As shown, for example, the box 10 is a rectangular box. In this embodiment, the thickness direction of the box 10 is the X-axis direction (i.e., the first direction), the length direction of the box 10 is the Y-axis direction (i.e., the second direction), and the width direction of the box 10 is the Z-axis direction (i.e., the third direction). In other embodiments, the length direction of the box 10 may also be the Z-axis direction, and the length direction of the box 10 may also be the Y-axis direction. The box 10 may also be a circular box, a triangular box, or other special-shaped box.

[0067] In some embodiments, the housing 10 includes a housing 11, a cover 12, and a mounting member 13. In the X-axis direction, the cover 12 is mounted to one side of the housing 11 via the mounting member 13. The cover 12 and the housing 11 together form a receiving cavity 14. In other words, in the X-axis direction (i.e., the first direction), the cover 12 is mounted to one side of the housing 11 and together with the housing 11 form the receiving cavity 14.

[0068] like Figure 8 、 Figure 9 and Figure 10 As shown, the housing 11 includes a main housing 15, a connecting housing 16 and fasteners 17. In other words, the power conversion device 200 (such as Figure 5 As shown in the figure, the main shell 15 includes a main shell 15, a connecting shell 16 and a fastener 17. In the Y-axis direction, the connecting shell 16 is mounted on one side of the main shell 15 by the fastener 17. That is to say, in the Y-axis direction (i.e., the second direction), the connecting shell 16 is arranged on one side of the main shell 15. Exemplarily, the number of connecting shells 16 is multiple, and specifically, the number of connecting shells 16 is 2. The two connecting shells 16 are respectively a first connecting shell 16a and a second connecting shell 16b. In other words, the connecting shell 16 includes a first connecting shell 16a and a second connecting shell 16b. In the Y-axis direction, the first connecting shell 16a and the second connecting shell 16b are arranged on both sides of the main shell 15. The number of first connecting shells 16a and / or the number of second connecting shells 16b may also be multiple. Multiple first connecting shells 16a are fixedly connected in sequence along the Z-axis direction, and multiple second connecting shells 16b are fixedly connected in sequence along the Z-axis direction. The number of connecting shells 16 may also be 3, 4 or more.

[0069] Exemplarily, there are multiple fasteners 17. Specifically, there are 14 fasteners 17. The 14 fasteners 17 are divided into 7 first fasteners 17a and 7 second fasteners 17b. In other words, the fasteners 17 include first fasteners 17a and second fasteners 17b. In the Y-axis direction, the first connecting shell 16a is arranged on one side of the main shell 15 through the 7 first fasteners 17a, and the second connecting shell 16b is arranged on the other side of the main shell 15 through the 7 second fasteners 17b. In other embodiments, the number of first fasteners 17a may be 1, 2, or more, and the number of second fasteners 17b may be 1, 2, or more, that is, the number of fasteners 17 may be 2, 3, or more.

[0070] In other embodiments, the first connecting shell 16a may be part of the main shell 15. That is, the first connecting shell 16a may be omitted, and the connecting shell 16 may only include the second connecting shell 16b. The number of connecting shells 16 may also be one. The number of fasteners 17 may also be one. In other embodiments, the main shell 15 and the connecting shell 16 are integrally formed, and the fasteners 17 may also be omitted. This helps improve the structural stability of the housing 11 and the box body 10.

[0071] In some embodiments, the main shell 15 includes a first portion 151, a second portion 152, a third portion 153, and a fourth portion 154. In the X-axis direction (i.e., the first direction), the second portion 152 is arranged opposite to the first portion 151, and the second portion 152 is spaced apart from the first portion 151. In the Z-axis direction (i.e., the third direction), the second portion 152 is located on one side of the first portion 151, and the second portion 152 is spaced apart from the first portion 151. The third portion 153 is arranged between the first portion 151 and the second portion 152. Specifically, the third portion 153 is connected between the first portion 151 and the second portion 152. In the Z-axis direction (i.e., the third direction), the fourth portion 154 is arranged on one side of the first portion 151 and faces away from the third portion 153. Specifically, the fourth portion 154 is fixedly connected to one side of the first portion 151 and faces away from the third portion 153.

[0072] One surface of the first portion 151 in the Y-axis direction, one surface of the second portion 152 in the Y-axis direction, one surface of the third portion 153 in the Y-axis direction, and one surface of the fourth portion 154 in the Y-axis direction are flush and form a first surface 15a. Another surface of the first portion 151 in the Y-axis direction, another surface of the second portion 152 in the Y-axis direction, another surface of the third portion 153 in the Y-axis direction, and another surface of the fourth portion 154 in the Y-axis direction are flush and form a second surface 15b. In other words, the main housing 15 includes a first surface 15a and a second surface 15b, with the first surface 15a and the second surface 15b facing each other in the Y-axis direction.

[0073] In some embodiments, the first portion 151 includes a first section 1511 and a second section 1512. The first section 1511 extends along the Z-axis. The second section 1512 is fixedly connected to one side of the first section 1511 in the X-axis. The end of the second section 1512 is fixedly connected to the end of the first section 1511. The second section 1512 extends along the X-axis.

[0074] The second portion 152 includes a fourth section 1521, a fifth section 1522, a sixth section 1523, and a seventh section 1524. The fourth section 1521 extends along the Z-axis. In the X-axis, the fourth section 1521 is located on one side of the first section 1511 and faces the second section 1512. The fourth section 1521 is opposite and spaced apart from the first section 1511. In the Z-axis, the fourth section 1521 is located on one side of the first section 1511 and faces away from the second section 1512. The fourth section 1521 is spaced apart from the first section 1511. The fifth section 1522 extends along the X-axis. In the X-axis, the fifth section 1522 is fixedly connected to one side of the fourth section 1521 and faces away from the first section 1511. In the Z-axis, the fifth section 1522 is located on one side of the fourth section 1521 and faces away from the first section 1511.

[0075] The sixth section 1523 extends along the Z-axis. In the X-axis, the sixth section 1523 is fixedly connected to one side of the fifth section 1522 and faces away from the fourth section 1521. In the Z-axis, the sixth section 1523 is located on one side of the fifth section 1522 and faces away from the fourth section 1521. The seventh section 1524 extends along the X-axis. In the X-axis, the seventh section 1524 is fixedly connected to one side of the sixth section 1523 and faces toward the fourth section 1521. In the Z-axis, the seventh section 1524 is located on one side of the sixth section 1523 and faces away from the fifth section 1522. A partition 155 is provided on one side of the fourth section 1521. In the X-axis, the partition 155 faces the first section 1511. In other words, the partition 155 is provided on one side of the second section 152, on one side of the main housing 15, and on one side of the housing 11. In the X-axis, the partition 155 faces the first section 151. The partition 155 extends along the X-axis direction.

[0076] The third portion 153 is fixedly connected between the first section 1511 of the first portion 151 and the fourth section 1521 of the second portion 152. The third portion 153 includes an eighth section 1531 and a ninth section 1532. The eighth section 1531 extends along the Z-axis. In the Z-axis, the eighth section 1531 is fixedly connected to one side of the first section 1511 and faces away from the second section 1512. The ninth section 1532 extends along the X-axis. In the X-axis, the ninth section 1532 is fixedly connected between the eighth section 1531 and the fourth section 1521. In the Z-axis, the ninth section 1532 is located on one side of the partition 155 and faces the first section 1511. The ninth section 1532 is spaced apart from the partition 155.

[0077] It can be understood that the first section 1511, the second section 1512, the eighth section 1531 and the ninth section 1532 together form the groove 156, and the first part 151 and the third part 153 together form the groove 156. That is, a groove 156 is provided on one side of the main shell 15, and a groove 156 is provided on one side of the shell 11. The groove 156 extends along the X-axis direction (i.e., the first direction) and has a first opening 1561. The groove 156 extends along the Y-axis direction and has a second opening 1562. Exemplarily, the number of the second openings 1562 is 2. In some other embodiments, the number of the second openings 1562 may also be 1. In the Z-axis direction, the partition 155 is located on one side of the groove 156 and is spaced apart from the groove 156. The projection of the partition 155 in the Z-axis direction overlaps with the projection of the groove 156 in the Z-axis direction.

[0078] The eighth section 1531, the ninth section 1532, the fourth section 1521, and the partition 155 together form a first mounting groove 156a. In other words, a first mounting groove 156a is provided on one side of the housing 11. In the Z-axis direction, the first mounting groove 156a is located on one side of the groove 156 and is spaced apart from the groove 156. The projection of the first mounting groove 156a in the Z-axis direction overlaps with the projection of the groove 156 in the Z-axis direction. The first mounting groove 156a extends along the X-axis direction and has an opening. The first mounting groove 156a extends along the Y-axis direction and has two openings. The orientation of the opening of the first mounting groove 156a in the X-axis direction is opposite to the orientation of the first opening 1561 of the groove 156. In the X-axis direction, the first mounting groove 156a and the groove 156 are disposed opposite each other.

[0079] The partition 155, the fourth section 1521, the fifth section 1522, the sixth section 1523, and the seventh section 1524 together form a second mounting groove 156b. In other words, a second mounting groove 156b is provided on one side of the housing 11. In the Z-axis direction, the second mounting groove 156b is located to one side of the first mounting groove 156a and faces away from the groove 156. The second mounting groove 156b is spaced apart from the first mounting groove 156a. The Z-axis projection of the second mounting groove 156b overlaps with the Z-axis projection of the first mounting groove 156a and the Z-axis projection of the groove 156. The second mounting groove 156b extends along the X-axis and has an opening. The second mounting groove 156b also extends along the Y-axis and has two openings. The X-axis opening of the second mounting groove 156b faces in the opposite direction from the first opening 1561 of the groove 156. In the X-axis direction, the second mounting groove 156b faces away from the groove 156.

[0080] In the Z-axis direction, the fourth portion 154 is fixedly connected to one side of the second section 1512 and faces away from the first section 1511. The fourth portion 154 includes a tenth section 1541 and an eleventh section 1542. The tenth section 1541 extends along the Z-axis direction. In the X-axis direction, the tenth section 1541 is located on one side of the second section 1512 and faces away from the first section 1511. In the Z-axis direction, the tenth section 1541 is fixedly connected to one side of the second section 1512 and faces away from the first section 1511. The eleventh section 1542 extends along the X-axis direction. In the X-axis direction, the eleventh section 1542 is located on one side of the tenth section 1541 and faces toward the first section 1511. In the Z-axis direction, the eleventh section 1542 is fixedly connected to one side of the tenth section 1541 and faces away from the second section 1512.

[0081] It can be understood that the second section 1512, the tenth section 1541, and the eleventh section 1542 together form a third mounting groove 156c. In other words, a third mounting groove 156c is provided on one side of the housing 11. In the Z-axis direction, the third mounting groove 156c is located on one side of the groove 156 and faces away from the first mounting groove 156a. The third mounting groove 156c is spaced apart from the groove 156. The projection of the third mounting groove 156c in the Z-axis direction overlaps with the projection of the groove 156 in the Z-axis direction. The third mounting groove 156c extends along the X-axis direction and has an opening. The third mounting groove 156c also extends along the Y-axis direction and has two openings. The orientation of the opening of the third mounting groove 156c in the X-axis direction is opposite to the orientation of the first opening 1561 of the groove 156. In the X-axis direction, the third mounting groove 156c is disposed opposite the groove 156.

[0082] In some embodiments, multiple first protrusions 157 are provided on one side of the main shell 15. In other words, multiple first protrusions 157 are provided on one side of the main shell 15, and multiple first protrusions 157 are provided on one side of the housing 11. Specifically, multiple first protrusions 157 are provided on one side of the first section 1511. The multiple first protrusions 157 are fixedly stacked with the first section 1511, and the multiple first protrusions 157 are fixedly stacked with the groove wall of the groove 156. In the X-axis direction, the multiple first protrusions 157 face the fourth section 1521, and the multiple first protrusions 157 face the second portion 152. In other words, the multiple first protrusions 157 are provided in the groove 156. In the X-axis direction, the multiple first protrusions 157 face the first opening 1561. The multiple first protrusions 157 are spaced apart. Specifically, in the Z-axis direction, the multiple first protrusions 157 are spaced apart. Each first protrusion 157 extends along the X-axis direction. In some other embodiments, the plurality of first protrusions 157 may also be disposed on one side of the second segment 1512 and facing the ninth segment 1532 , or the plurality of first protrusions 157 may also be disposed on one side of the ninth segment 1532 and facing the second segment 1512 .

[0083] In some embodiments, a plurality of second protrusions 157a are provided on one side of the main shell 15. In other words, a plurality of second protrusions 157a are provided on one side of the main shell 15, and a plurality of second protrusions 157a are provided on one side of the housing 11. Specifically, a plurality of second protrusions 157a are provided on one side of the fourth section 1521. The plurality of second protrusions 157a are fixedly stacked with the fourth section 1521, and the plurality of second protrusions 157a are fixedly stacked with the housing 11. In the X-axis direction, the plurality of second protrusions 157a face away from the first mounting groove 156a. The projections of the plurality of second protrusions 157a in the X-axis direction overlap with the projections of the first mounting groove 156a in the X-axis direction. The plurality of second protrusions 157a are spaced apart. Specifically, in the Z-axis direction, the plurality of second protrusions 157a are spaced apart. Each second protrusion 157a extends along the X-axis direction. In the Z-axis direction, the plurality of second protrusions 157 a are located on one side of the plurality of first protrusions 157 and are spaced apart from the plurality of first protrusions 157 .

[0084] In some embodiments, a plurality of third protrusions 157b are provided on one side of the main shell 15. In other words, a plurality of third protrusions 157b are provided on one side of the main shell 15, and a plurality of third protrusions 157b are provided on one side of the housing 11. Specifically, a plurality of third protrusions 157b are provided on one side of the fourth section 1521. The plurality of third protrusions 157b are fixedly stacked with the fourth section 1521, and the plurality of third protrusions 157b are fixedly stacked with the housing 11. In the X-axis direction, the plurality of third protrusions 157b face away from the second mounting groove 156b. The projections of the plurality of third protrusions 157b in the X-axis direction overlap with the projections of the second mounting groove 156b in the X-axis direction. The plurality of third protrusions 157b are spaced apart. Specifically, in the Z-axis direction, the plurality of third protrusions 157b are spaced apart. Each third protrusion 157b extends along the X-axis direction. In the Z-axis direction, the plurality of third protrusions 157b are located on one side of the plurality of second protrusions 157a and face away from the plurality of first protrusions 157, and are spaced apart from the plurality of second protrusions 157a.

[0085] In some embodiments, a plurality of fourth protrusions 157c are provided on one side of the main shell 15. In other words, a plurality of fourth protrusions 157c are provided on one side of the main shell 15, and a plurality of fourth protrusions 157c are provided on one side of the housing 11. Specifically, a plurality of fourth protrusions 157c are provided on one side of the tenth section 1541. The plurality of fourth protrusions 157c are fixedly stacked with the tenth section 1541, and the plurality of fourth protrusions 157c are fixedly stacked with the housing 11. In the X-axis direction, the plurality of fourth protrusions 157c face away from the third mounting groove 156c. The projections of the plurality of fourth protrusions 157c in the X-axis direction overlap with the projections of the third mounting groove 156c in the X-axis direction. The plurality of fourth protrusions 157c are spaced apart. Specifically, in the Z-axis direction, the plurality of fourth protrusions 157c are spaced apart. Each fourth protrusion 157c extends along the X-axis direction. In the Z-axis direction, the plurality of fourth protrusions 157 c are located on one side of the plurality of first protrusions 157 and face away from the plurality of second protrusions 157 a , and are spaced apart from the plurality of first protrusions 157 .

[0086] In some embodiments, the second portion 152 is provided with a first fixing portion 1525. Specifically, the first fixing portion 1525 is provided on one side of the seventh segment 1524, with the first fixing portion 1525 facing away from the groove 156 in the Z-axis direction. The first fixing portion 1525 is provided with a first fixing hole 1526. The first fixing hole 1526 extends through the first fixing portion 1525 along the X-axis direction. Exemplarily, there are multiple first fixing holes 1526, and specifically, there are four first fixing holes 1526. In other embodiments, the number of first fixing holes 1526 may be one, two, or more. The multiple first fixing holes 1526 are spaced apart along the Y-axis direction.

[0087] In some embodiments, the fourth portion 154 is provided with a second fixing portion 1543. Specifically, the second fixing portion 1543 is provided on one side of the eleventh section 1542, with the second fixing portion 1543 facing away from the groove 156 in the Z-axis direction. The second fixing portion 1543 is provided with a second fixing hole 1544. The second fixing hole 1544 extends through the second fixing portion 1543 along the X-axis direction. Exemplarily, there are multiple second fixing holes 1544, and specifically, there are four. In other embodiments, the number of second fixing holes 1544 may be one, two, or more. The multiple second fixing holes 1544 are spaced apart along the Y-axis direction.

[0088] In some embodiments, the main housing 15 is provided with mounting holes 158. The mounting holes 158 extend along the Y-axis (i.e., the second direction). Exemplarily, the number of mounting holes 158 is 14. In other embodiments, the number of mounting holes 158 may be 2, 3, or more. The 14 mounting holes 158 are defined as 2 first mounting holes 158a, 2 second mounting holes 158b, 2 third mounting holes 158c, 2 fourth mounting holes 158d, 2 fifth mounting holes 158e, 2 sixth mounting holes 158f, and 2 seventh mounting holes 158g.

[0089] Two first mounting holes 158a are provided in the eleventh section 1542, one extending from the first surface 15a along the Y-axis, and the other extending from the second surface 15b along the Y-axis. Two second mounting holes 158b are provided in the tenth section 1541, one extending from the first surface 15a along the Y-axis, and the other extending from the second surface 15b along the Y-axis. Two third mounting holes 158c are provided in the first section 1511, one extending from the first surface 15a along the Y-axis, and the other extending from the second surface 15b along the Y-axis.

[0090] Two fourth mounting holes 158d are provided in the fourth section 1521. One fourth mounting hole 158d extends from the first surface 15a along the Y-axis, and the other fourth mounting hole 158d extends from the second surface 15b along the Y-axis. Two fifth mounting holes 158e are provided in the fourth section 1521. In the Z-axis direction, the fifth mounting holes 158e are located to one side of the fourth mounting hole 158d and face away from the groove 156. One fifth mounting hole 158e extends from the first surface 15a along the Y-axis, and the other fifth mounting hole 158e extends from the second surface 15b along the Y-axis.

[0091] Two sixth mounting holes 158f are provided in the sixth section 1523. One sixth mounting hole 158f extends from the first surface 15a along the Y-axis, and the other sixth mounting hole 158f extends from the second surface 15b along the Y-axis. Two seventh mounting holes 158g are provided in the seventh section 1524. One seventh mounting hole 158g extends from the first surface 15a along the Y-axis, and the other seventh mounting hole 158g extends from the second surface 15b along the Y-axis.

[0092] In some embodiments, a first mounting portion 159 is provided on one side of the main housing 15. In the X-axis direction, the first mounting portion 159 faces away from the groove 156. The first mounting portion 159 extends along the X-axis. For example, there are multiple first mounting portions 159, and more specifically, there are seven first mounting portions 159. Six first mounting portions 159 are received in the second mounting groove 156b, and another first mounting portion 159 is received in the third mounting groove 156c. In other embodiments, the number of first mounting portions 159 may be one, two, or more.

[0093] In some embodiments, the first connecting shell 16a is disposed on one side of the first surface 15a of the main shell 15, facing away from the second surface 15b, via seven first fasteners 17a. The first connecting shell 16a (i.e., the connecting shell 16) includes a mating surface 160, which faces the main shell 15. The mating surface 160 is disposed in an overlapping manner with the first surface 15a of the main shell 15.

[0094] In some embodiments, the first connecting shell 16a includes a first connecting portion 161, a second connecting portion 162, a third connecting portion 163, and a fourth connecting portion 164. In the X-axis direction, the second connecting portion 162 is disposed on one side of the first connecting portion 161, the third connecting portion 163 is disposed on one side of the second connecting portion 162 and faces away from the first connecting portion 161, and the fourth connecting portion 164 is disposed on one side of the first connecting portion 161 and faces the second connecting portion 162. In the Z-axis direction, the fourth connecting portion 164 is located on one side of the second connecting portion 162 and is spaced apart from the second connecting portion 162. The mating surface 160 includes a surface of the first connecting portion 161 facing the main shell 15, a surface of the second connecting portion 162 facing the main shell 15, a surface of the third connecting portion 163 facing the main shell 15, and a surface of the fourth connecting portion 164 facing the main shell 15.

[0095] The first connecting portion 161, the second connecting portion 162, and the fourth connecting portion 164 together form a mating through-hole 165. In other words, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a mating through-hole 165, which extends through the first connecting shell 16a (i.e., the connecting shell 16) along the Y-axis direction (i.e., the second direction). The projection of the mating through-hole 165 along the Y-axis overlaps with the projection of the groove 156 along the Y-axis direction, and the mating through-hole 165 is connected to the second opening 1562 of the groove 156. The plurality of first protrusions 157 are exposed to the exterior of the first connecting shell 16a (i.e., the connecting shell 16) through the second opening 1562 and the mating through-hole 165. It can be understood that the plurality of first protrusions 157 are exposed to the exterior of the housing 10 through the first opening 1561 and the second opening 1562.

[0096] The first connecting portion 161 and the third connecting portion 163 together form a mounting slot 165a. In other words, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a mounting slot 165a. In the Z-axis direction, the mounting slot 165a is located on one side of the mating through-hole 165 and faces away from the fourth connecting portion 164. The mounting slot 165a extends along the Z-axis (i.e., the third direction) and has an opening. In the Z-axis direction (i.e., the third direction), the opening of the mounting slot 165a faces the mating through-hole 165.

[0097] In some embodiments, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a connecting hole 166. The connecting hole 166 passes through the first connecting shell 16a (i.e., the connecting shell 16) along the Y-axis direction (i.e., the second direction). The projection of the connecting hole 166 in the Y-axis direction overlaps with the projection of the mounting hole 158 in the Y-axis direction, and the connecting hole 166 is connected to the mounting hole 158. The first fastener 17a (i.e., the fastener 17) is installed in the connecting hole 166 and the mounting hole 158. Specifically, the first fastener 17a (i.e., the fastener 17) passes through the connecting hole 166 and is threadedly connected to the mounting hole 158. Since the first fastener 17a (i.e., the fastener 17) is installed in the mounting hole 158 and the connecting hole 166, the first connecting shell 16a (i.e., the connecting shell 16) is fixedly connected to the main shell 15, and the structure is simple and stable, which is convenient for design and helps to reduce processing costs.

[0098] In an exemplary embodiment, the number of connection holes 166 is seven, namely, a first connection hole 166a, a second connection hole 166b, a third connection hole 166c, a fourth connection hole 166d, a fifth connection hole 166e, a sixth connection hole 166f, and a seventh connection hole 166g. The first connection hole 166a is connected to the first mounting hole 158a. The second connection hole 166b is connected to the second mounting hole 158b. The third connection hole 166c is connected to the third mounting hole 158c. The fourth connection hole 166d is connected to the fourth mounting hole 158d. The fifth connection hole 166e is connected to the fifth mounting hole 158e. The sixth connection hole 166f is connected to the sixth mounting hole 158f. The seventh connection hole 166g is connected to the seventh mounting hole 158g. In other embodiments, the number of connection holes 166 may be one, two, or more.

[0099] Among the seven first fasteners 17a, one first fastener 17a is installed in the first connecting hole 166a and the first mounting hole 158a, one first fastener 17a is installed in the second connecting hole 166b and the second mounting hole 158b, one first fastener 17a is installed in the third connecting hole 166c and the third mounting hole 158c, one first fastener 17a is installed in the fourth connecting hole 166d and the fourth mounting hole 158d, one first fastener 17a is installed in the fifth connecting hole 166e and the fifth mounting hole 158e, one first fastener 17a is installed in the sixth connecting hole 166f and the sixth mounting hole 158f, and one first fastener 17a is installed in the seventh connecting hole 166g and the seventh mounting hole 158g.

[0100] In some embodiments, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a through-hole 167. The through-hole 167 extends through the first connecting shell 16a (i.e., the connecting shell 16) along the Y-axis. Exemplarily, there are two through-holes 167, namely a first through-hole 167a and a second through-hole 167b. In the Z-axis, the first through-hole 167a and the second through-hole 167b are located on opposite sides of the mating through-hole 165 and are spaced apart from the mating through-hole 165. In other embodiments, the number of through-holes 167 may be one, three, or more.

[0101] In some embodiments, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a first through hole 168. The first through hole 168 extends through the first connecting shell 16a (i.e., the connecting shell 16) along the Y-axis. In the Z-axis, the first through hole 168 is located to one side of the mating through hole 165 and is spaced apart from the mating through hole 165. The projection of the first through hole 168 in the Y-axis overlaps with the projection of the plurality of fourth protrusions 157c in the Y-axis.

[0102] The first connecting shell 16a (i.e., connecting shell 16) is provided with a second through-hole 168a. Second through-hole 168a extends through the first connecting shell 16a (i.e., connecting shell 16) along the Y-axis. In the Z-axis, second through-hole 168a is located to one side of the mating through-hole 165 and faces away from the first through-hole 168. Second through-hole 168a is spaced apart from mating through-hole 165. The projection of second through-hole 168a in the Y-axis overlaps with the projections of the plurality of second protrusions 157a and the projections of the plurality of third protrusions 157b in the Y-axis.

[0103] The first connecting shell 16a (i.e., connecting shell 16) is provided with a third through-hole 168b. This third through-hole 168b extends through the first connecting shell 16a (i.e., connecting shell 16) along the Y-axis. In the Z-axis, the third through-hole 168b is located to one side of the second through-hole 168a and faces away from the mating through-hole 165. The third through-hole 168b is spaced apart from the second through-hole 168a. The projection of the third through-hole 168b in the Y-axis overlaps with the projections of the plurality of third protrusions 157b in the Y-axis.

[0104] The first connecting shell 16a (i.e., connecting shell 16) is provided with an operating hole 168c. Operating hole 168c extends through the first connecting shell 16a (i.e., connecting shell 16) along the Y-axis (i.e., the second direction). In the Z-axis direction, operating hole 168c is located to one side of the third through hole 168b and faces away from the mating through hole 165. Operating hole 168c is spaced apart from the third through hole 168b. Operating hole 168c is spaced apart from the mating through hole 165. The projection of operating hole 168c in the Y-axis direction overlaps with the projection of the plurality of third protrusions 157b in the Y-axis direction.

[0105] The first connecting housing 16a (i.e., the connecting housing 16) can be grasped through the operation hole 168c, thereby facilitating the grasping of the power conversion device 200 and allowing for easy transport of the power conversion device 200. The design of the operation hole 168c facilitates transport of the power conversion device 200 and has a simple and stable structure, which facilitates design and helps reduce manufacturing costs.

[0106] In some embodiments, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a receiving groove 169. Specifically, the mating surface 160 is provided with a receiving groove 169. That is to say, one side of the first connecting shell 16a (i.e., the connecting shell 16) is provided with a receiving groove 169, and the receiving groove 169 extends along the Y-axis direction (i.e., the second direction) and has an opening. In the Y-axis direction (i.e., the second direction), the opening of the receiving groove 169 faces the main shell 15. The projection of the receiving groove 169 in the Y-axis direction overlaps with the projection of the main shell 15 in the Y-axis direction. The receiving groove 169 is used to accommodate the connector 18. In other words, the power conversion device 200 (such as Figure 5 The main housing 15 is shown in FIG. 1 , and includes a connector 18. The connector 18 is received in the receiving groove 169. The connector 18 is fixedly stacked with the main housing 15. For example, the connector 18 is made of materials including but not limited to adhesive or solder.

[0107] The design of the connector 18 is conducive to improving the connection strength between the first connecting shell 16a (i.e., the connecting shell 16) and the main shell 15, and is conducive to improving the structural stability of the shell 11. In addition, the structure is simple, easy to design, and conducive to reducing processing costs. The design of the connector 18 being accommodated in the receiving groove 169 is conducive to improving the space utilization of the first connecting shell 16a (i.e., the connecting shell 16), avoiding the connector 18 from occupying additional space in the Y-axis direction (i.e., the second direction), and is conducive to reducing the size of the shell 11 in the Y-axis direction (i.e., the second direction), which is conducive to the miniaturization design of the shell 11 and is conducive to the power conversion device 200 (such as Figure 5 (shown) miniaturized design.

[0108] like Figure 9 As shown, in some embodiments, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a third fixing hole 169a. Specifically, the third fixing hole 169a is provided on one side of the first portion 151. The third fixing hole 169a extends through the first connecting portion 161 along the X-axis. In the Y-axis, the third fixing hole 169a faces away from the main shell 15. Exemplarily, there are two third fixing holes 169a. The two third fixing holes 169a are arranged along the Z-axis. In other embodiments, the number of third fixing holes 169a may be one, three, or more.

[0109] In some embodiments, the first connecting shell 16a (i.e., the connecting shell 16) is provided with a second mounting portion 169b. Specifically, the second mounting portion 169b is provided on one side of the first connecting portion 161. In the Y-axis direction, the second mounting portion 169b faces the main shell 15. Exemplarily, there are three second mounting portions 169b. The three second mounting portions 169b are spaced apart along the Z-axis. In other embodiments, the number of second mounting portions 169b may be one, two, or more.

[0110] like Figure 8 、 Figure 9 and Figure 10 As shown, in some embodiments, the second connecting shell 16b is arranged on one side of the second surface 15b of the main shell 15 and faces away from the first surface 15a through 7 second fasteners 17b. The second connecting shell 16b (i.e., the connecting shell 16) includes a mating surface 160, and the mating surface 160 faces the main shell 15. The mating surface 160 is fixedly stacked with the main shell 15. For details, please refer to the relevant description of the first connecting shell 16a, which will not be repeated here. Among them, the first connecting shell 16a and the second connecting shell 16b close the two openings of the first mounting groove 156a in the Y-axis direction. The first connecting shell 16a and the second connecting shell 16b close the two openings of the second mounting groove 156b in the Y-axis direction. The first connecting shell 16a and the second connecting shell 16b close the two openings of the third mounting groove 156c in the Y-axis direction.

[0111] like Figure 2 、 Figure 3 and Figure 4 As shown, the third connection portion 163 of the first connection shell 16a is inserted into the mating groove 1021 of one mating member 102, abutting the mating member 102, and the wall of the mounting groove 165a of the first connection shell 16a abuts the mating member 102. The third connection portion 163 of the second connection shell 16b is inserted into the mating groove 1021 of another mating member 102, abutting the mating member 102, and the wall of the mounting groove 165a of the second connection shell 16b abuts the mating member 102. Thus, the main shell 15 is mounted on the mating member 102, the housing 10 is mounted on the mating member 102, the power conversion device 200 is mounted on the mating member 102, and the power conversion device 200 is mounted on the carrier 100. It can be understood that the connecting shell 16 can be mounted on an external component (e.g., the carrier 100) through the mounting slot 165a, so that the housing 10 can be mounted on an external component (e.g., the carrier 100) through the mounting slot 165a, and the power conversion device 200 can be mounted on an external component (e.g., the carrier 100) through the mounting slot 165a, thereby meeting the mounting requirements of the power conversion device 200. The design of providing the mounting slot 165a on the connecting shell 16 avoids the need to provide additional mounting parts, which is conducive to simplifying the structure, reducing the structural complexity of the power conversion device 200, and reducing the processing cost of the power conversion device 200.

[0112] like Figure 5 、 Figure 7 and Figure 8 As shown, in some embodiments, in the X-axis direction, the cover plate 12 is mounted to a side of the housing 11 via the mounting member 13. Specifically, in the X-axis direction, the cover plate 12 is mounted to a side of the housing 11, facing away from the groove 156. In the X-axis direction (i.e., the first direction), the cover plate 12 is mounted to a side of the main housing 15 and the connecting housing 16 (including the first connecting housing 16a and the second connecting housing 16b), facing away from the groove 156. The cover plate 12 is mounted to a side of the second portion 152, the fourth portion 154, the first connecting housing 16a, and the second connecting housing 16b, facing away from the groove 156. In other words, the second portion 152 and the fourth portion 154 are both mounted to the cover plate 12. The cover plate 12 is spaced apart from the first section 1511, and the cover plate 12 is spaced apart from the first section 151. The partition 155 is disposed on a side of the fourth section 1521 and faces the cover plate 12. The partition 155 is disposed on a side of the housing 11 and faces the cover plate 12. That is, a partition 155 is provided on one side of the housing 11 , and in the X-axis direction (ie, the first direction), the partition 155 faces the cover 12 .

[0113] The cover plate 12 covers the opening of the first mounting groove 156a in the X-axis direction, the opening of the second mounting groove 156b in the X-axis direction, and the opening of the third mounting groove 156c in the X-axis direction. The cover plate 12, the main shell 15, and the connecting shell 16 (including the first connecting shell 16a and the second connecting shell 16b) together form a receiving chamber 14. The cover plate 12 and the shell 11 together form a receiving chamber 14. Among them, the first mounting portion 159 of the main shell 15 is received in the receiving chamber 14. The second mounting portion 169b of the first connecting shell 16a is received in the receiving chamber 14. The second mounting portion 169b of the second connecting shell 16b is received in the receiving chamber 14. It can be understood that the projection of the operating hole 168c of the connecting shell 16 in the Y-axis direction (i.e., the second direction) and the projection of the receiving chamber 14 in the Y-axis direction (i.e., the second direction) are spaced apart.

[0114] In some embodiments, the cover plate 12 includes a first mounting surface 121, a second mounting surface 122, a third mounting surface 123, and a fourth mounting surface 124. In the Z-axis direction, the second mounting surface 122 is opposite and spaced from the first mounting surface 121, and the third mounting surface 123 and the fourth mounting surface 124 are located between the first mounting surface 121 and the second mounting surface 122. In the Y-axis direction, the third mounting surface 123 and the fourth mounting surface 124 are opposite and spaced from each other. In the X-axis direction, the first mounting surface 121 faces the second fixing portion 1543 and is stacked with the second fixing portion 1543. In the X-axis direction, the second mounting surface 122 faces the first fixing portion 1525 and is stacked with the first fixing portion 1525. In the X-axis direction, the third mounting surface 123 faces the first connecting portion 161 of the first connecting shell 16a and is stacked with the first connecting portion 161. In the X-axis direction, the fourth mounting surface 124 faces the first connecting portion 161 of the second connecting shell 16 b and is stacked with the first connecting portion 161 .

[0115] The cover plate 12 is provided with a first connection through-hole 125 extending from the first mounting surface 121 along the X-axis. Exemplarily, there are multiple first connection through-holes 125, and more specifically, four. In other embodiments, the number of first connection through-holes 125 may be one, two, or more. The multiple first connection through-holes 125 are spaced apart along the Y-axis. The multiple first connection through-holes 125 are connected to the multiple second fixing holes 1544 in a one-to-one correspondence.

[0116] The cover plate 12 is provided with a second connection through-hole 126 extending from the second mounting surface 122 along the X-axis. Exemplarily, there are multiple second connection through-holes 126, and more specifically, four. In other embodiments, the number of second connection through-holes 126 may be one, two, or more. The multiple second connection through-holes 126 are spaced apart along the Y-axis. The multiple second connection through-holes 126 are connected to the multiple first fixing holes 1526 in a one-to-one correspondence.

[0117] The cover plate 12 is provided with a third connection through-hole 127 extending from the third mounting surface 123 along the X-axis. Exemplarily, there are multiple third connection through-holes 127, and more specifically, two. In other embodiments, the number of third connection through-holes 127 may be one, three, or more. The multiple third connection through-holes 127 are spaced apart along the Z-axis. The multiple third connection through-holes 127 correspond one-to-one with the multiple third fixing holes 169a of the first connection shell 16a.

[0118] The cover plate 12 is provided with a fourth connecting through-hole 128, which extends from the fourth mounting surface 124 along the X-axis. Exemplarily, there are multiple fourth connecting through-holes 128, and more specifically, there are two. In other embodiments, the number of fourth connecting through-holes 128 may be one, three, or more. The multiple fourth connecting through-holes 128 are spaced apart along the Z-axis. The multiple fourth connecting through-holes 128 are in one-to-one communication with the multiple third fixing holes 169a of the second connecting shell 16b.

[0119] In an exemplary embodiment, the number of mounting members 13 is 12. These 12 mounting members 13 are divided into four first mounting members 13a, four second mounting members 13b, two third mounting members 13c, and two fourth mounting members 13d. The four first mounting members 13a are correspondingly installed in the four first connection holes 125 and the four second fixing holes 1544. The four second mounting members 13b are correspondingly installed in the four second connection holes 126 and the four first fixing holes 1526. The two third mounting members 13c are correspondingly installed in the two third connection holes 127 and the two third fixing holes 169a of the first connection shell 16a. The two fourth mounting members 13d are correspondingly installed in the two fourth connection holes 128 and the two third fixing holes 169a of the second connection shell 16b. In other embodiments, the number of mounting members 13 may be one, two, or more. Thus, the cover plate 12 is mounted on one side of the second portion 152, the fourth portion 154, the first connecting shell 16a and the second connecting shell 16b through the mounting member 13 and faces away from the groove 156. The structure is simple and stable, easy to design, and helps reduce processing costs.

[0120] In some embodiments, the cover plate 12 is provided with a mating through-hole 129 that extends through the cover plate 12 along the X-axis. The mating through-hole 129 is spaced apart from the first connection through-hole 125, the second connection through-hole 126, the third connection through-hole 127, and the fourth connection through-hole 128. Through the mating through-hole 129, the housing 10 can be mounted on an external component, thereby facilitating installation of the power conversion device 200.

[0121] See also Figure 11 , and combined with Figure 3 、 Figure 5 and Figure 6 , Figure 11 yes Figure 4 The power conversion device 200 (with the mounting member 13 and the heat dissipation assembly 30 omitted) is shown as a schematic exploded perspective view of the three-dimensional structure at another angle.

[0122] like Figure 5 、 Figure 6 and Figure 11As shown, in some embodiments, the power assembly 20 is housed in the housing cavity 14. Specifically, the circuit board 21 is housed in the housing cavity 14. Through methods including but not limited to screws or gluing, in the X-axis direction, the circuit board 21 is mounted on one side of the first mounting portion 159, facing away from the groove 156. The circuit board 21 is mounted on one side of the second mounting portion 169b of the first connecting shell 16a, facing away from the groove 156. The circuit board 21 is mounted on one side of the second mounting portion 169b of the second connecting shell 16b, facing away from the groove 156. The circuit board 21 is located between the first section 1511 of the main shell 15 and the cover 12, and is spaced apart from the first section 1511 and the cover 12. The circuit board 21 is located between the first portion 151 and the cover 12, and between the housing 11 and the cover 12.

[0123] In some embodiments, in the X-axis direction (i.e., the first direction), the power module 22 is mounted on one side of the circuit board 21 and faces the first section 1511. The power module 22 is mounted on one side of the circuit board 21 and faces the housing 11. The power module 22 is fixedly stacked with the first section 1511, the power module 22 is fixedly stacked with the first portion 151, the power module 22 is fixedly stacked with the main housing 15, the power module 22 is in contact with the main housing 15, and the power module 22 is in contact with the housing 11. The power module 22 is accommodated in the accommodating cavity 14.

[0124] It can be understood that in the X-axis direction (i.e., the first direction), the power module 22 is fixedly stacked on one side of the first portion 151 and faces away from the second portion 152. In the X-axis direction (i.e., the first direction), the first opening 1561 of the groove 156 faces away from the power module 22. In the X-axis direction (i.e., the first direction), the multiple first protrusions 157 are fixedly stacked on one side of the first section 1511 and face away from the power module 22. The multiple first protrusions 157 are arranged on one side of the first portion 151 and face away from the power module 22. In other words, the groove 156 is provided with multiple first protrusions 157, and the multiple first protrusions 157 are spaced apart. The projections of the multiple first protrusions 157 in the X-axis direction overlap with the projections of the power module 22 in the X-axis direction. In other words, the projections of the power module 22 in the X-axis direction (i.e., the first direction) overlap with the projections of the multiple first protrusions 157 in the X-axis direction (i.e., the first direction).

[0125] In the power conversion device 200 provided in the embodiment of the present application, the heat generated by the power module 22 during operation is transferred to the exterior of the housing 10 via the first section 1511 (i.e., the housing 11) and the plurality of first protrusions 157, thereby achieving rapid heat dissipation of the power module 22. The design of the plurality of first protrusions 157 facilitates increasing the heat dissipation area of ​​the heat generated by the power module 22 during operation and transferred to the exterior of the housing 10 via the first section 1511 (i.e., the housing 11), thereby improving the efficiency of heat transfer from the power module 22 during operation to the exterior of the housing 10 via the first section 1511 (i.e., the housing 11), and thereby improving the heat dissipation efficiency of the power module 22.

[0126] Compared with the existing power conversion device 200, the power conversion device 200 provided in the present application, since multiple first protrusions 157 are accommodated in the groove 156, greatly improves the space utilization of the box 10 on the basis of ensuring the heat dissipation efficiency of the power module 22, is beneficial to reducing the size of the power conversion device 200 in the X-axis direction (i.e., the first direction), and is beneficial to the miniaturized design of the power conversion device 200.

[0127] The design in which the projection of the power module 22 in the X-axis direction (i.e., the first direction) overlaps with the projection of the multiple first protrusions 157 in the X-axis direction (i.e., the first direction) is conducive to shortening the heat dissipation path between the power module 22 and the first protrusions 157, and is conducive to improving the efficiency of transferring the heat generated by the power module 22 during operation from the multiple first protrusions 157 to the outside of the box 10, and is conducive to improving the heat dissipation efficiency of the power module 22.

[0128] The groove 156 extends along the X-axis direction (i.e., the first direction) and has a first opening 1561, and the groove 156 extends along the Y-axis direction (i.e., the second direction) and has a second opening 1562. This design ensures that the multiple first protrusions 157 can be exposed to the outside of the box body 10 from the first opening 1561 and the second opening 1562, which is beneficial to increasing the contact area between the first protrusions 157 and the environment outside the box body 10, and is beneficial to improving the efficiency of transferring the heat generated by the power module 22 during operation to the outside of the box body 10 through the multiple first protrusions 157, which is beneficial to improving the heat dissipation efficiency of the power module 22.

[0129] like Figure 4 and Figure 5 As shown, the design of the matching through hole 165 and the second opening 1562 of the connecting shell 16 (including the first connecting shell 16a and the second connecting shell 16b) can prevent the connecting shell 16 from covering the second opening 1562 of the groove 156, thereby ensuring that the heat generated by the power module 22 during operation can be transferred from the second opening 1562 to the outside of the box body 10 through the multiple first protrusions 157, which is beneficial to improving the efficiency of transferring the heat generated by the power module 22 during operation to the outside of the box body 10 through the multiple first protrusions 157, and is beneficial to improving the heat dissipation efficiency of the power module 22.

[0130] It can be understood that the heat generated by the power module 22 during operation is transferred to the outside of the housing 10 via the first section 1511 (i.e., the first portion 151) of the main housing 15 and the plurality of first protrusions 157. The design of the power module 22 being fixedly stacked with the first section 1511 (i.e., the first portion 151) of the main housing 15 is advantageous in increasing the contact area between the power module 22 and the first section 1511 (i.e., the first portion 151), and is advantageous in improving the efficiency of heat generated by the power module 22 during operation being transferred to the plurality of first protrusions 157 via the first section 1511 (i.e., the first portion 151), and is advantageous in improving the efficiency of heat generated by the power module 22 during operation being transferred to the outside of the housing 10 via the plurality of first protrusions 157, thereby improving the heat dissipation efficiency of the power module 22.

[0131] like Figure 5 、 Figure 6 and Figure 11 As shown, in some embodiments, in the X-axis direction, the first inductor 23a is mounted on one side of the circuit board 21 and faces the fourth segment 1521, and the first inductor 23a is spaced apart from the fourth segment 1521. In other words, in the X-axis direction, the first inductor 23a is mounted on one side of the circuit board 21 and faces the housing 11, and the first inductor 23a is spaced apart from the housing 11. In other embodiments, the first inductor 23a may also contact the fourth segment 1521, or the first inductor 23a may also contact the housing 11.

[0132] In the Z-axis direction, the first inductor 23a is located on one side of the power module 22 and spaced apart from the power module 22. In the Z-axis direction, the first inductor 23a is located between the third portion 153 and the partition 155, and spaced apart from both the third portion 153 and the partition 155. The first inductor 23a is received in the first mounting groove 156a and is housed in the receiving cavity 14. In the Z-axis direction, the first inductor 23a is located on one side of the groove 156 and faces away from the third mounting groove 156c. The first inductor 23a is spaced apart from the groove 156. The projection of the first inductor 23a in the Z-axis direction overlaps with the projection of the groove 156 in the Z-axis direction. Furthermore, the projection of the first inductor 23a in the X-axis direction overlaps with the projection of the multiple second protrusions 157a in the X-axis direction. It can be understood that in the X-axis direction, the multiple second protrusions 157a are located on one side of the housing 11 and face away from the first inductor 23a. That is, a plurality of second protrusions 157 a are provided on one side of the housing 11 , and in the X-axis direction, the plurality of second protrusions 157 a face away from the first inductor 23 a .

[0133] In some embodiments, in the X-axis direction, the second inductor 23b is mounted on one side of the circuit board 21 and faces the fourth segment 1521, with the second inductor 23b spaced apart from the fourth segment 1521. In other words, in the X-axis direction, the second inductor 23b is mounted on one side of the circuit board 21 and faces the housing 11, with the second inductor 23b spaced apart from the housing 11. In other embodiments, the second inductor 23b may also contact the fourth segment 1521, or the second inductor 23b may also contact the housing 11.

[0134] In the Z-axis direction, the second inductor 23b is located on one side of the power module 22 and spaced apart from the power module 22. In the Y-axis direction, the second inductor 23b is located on one side of the first inductor 23a and spaced apart from the first inductor 23a. In the Z-axis direction, the second inductor 23b is located between the third portion 153 and the partition 155 and spaced apart from the third portion 153 and the partition 155. The second inductor 23b is received in the first mounting groove 156a and is received in the receiving cavity 14. In the Z-axis direction, the second inductor 23b is located on one side of the groove 156 and faces away from the third mounting groove 156c. The second inductor 23b is spaced apart from the groove 156. The projection of the second inductor 23b in the Z-axis direction overlaps with the projection of the groove 156 in the Z-axis direction. The projection of the second inductor 23b in the X-axis direction overlaps with the projection of the plurality of second protrusions 157a in the X-axis direction. It can be understood that in the X-axis direction, the multiple second protrusions 157a are arranged on one side of the housing 11 and face away from the second inductor 23b. That is, the multiple second protrusions 157a are arranged on one side of the housing 11 and face away from the second inductor 23b in the X-axis direction.

[0135] It can be understood that in the X-axis direction (i.e., the first direction), the inductor 23 is mounted on one side of the circuit board 21 and faces the housing 11. In the Z-axis direction (i.e., the third direction), the inductor 23 is located on one side of the groove 156 and is spaced apart from the groove 156. The projection of the inductor 23 in the Z-axis direction (i.e., the third direction) overlaps with the projection of the groove 156 in the Z-axis direction (i.e., the third direction). The design in which the projection of the inductor 23 in the Z-axis direction (i.e., the third direction) overlaps with the projection of the groove 156 in the Z-axis direction (i.e., the third direction) is conducive to reducing the size of the housing 10 in the X-axis direction (i.e., the first direction), improving the space utilization of the housing 10, facilitating the miniaturization design of the housing 10, facilitating the miniaturization design of the power conversion device 200, and improving the power density of the power conversion device 200.

[0136] A plurality of second protrusions 157a are provided on one side of the housing 11. In the X-axis direction (i.e., the first direction), the plurality of second protrusions 157a face away from the inductor 23. The projection of the inductor 23 in the X-axis direction (i.e., the first direction) overlaps with the projection of the plurality of second protrusions 157a in the X-axis direction (i.e., the first direction). Heat generated by the inductor 23 during operation can be transferred to the exterior of the housing 10 via the housing 11 and the plurality of second protrusions 157a, thereby dissipating heat from the inductor 23. The design of the plurality of second protrusions 157a helps increase the heat dissipation area of ​​the heat generated by the inductor 23 during operation and transferred to the exterior of the housing 10 via the housing 11. This helps increase the efficiency of heat transfer from the inductor 23 during operation and improves the efficiency of heat dissipation from the inductor 23.

[0137] The design in which the projection of the inductor 23 in the X-axis direction (i.e., the first direction) overlaps with the projection of the multiple second protrusions 157a in the X-axis direction (i.e., the first direction) is conducive to shortening the heat dissipation path between the inductor 23 and the second protrusions 157a, and is conducive to improving the efficiency of transferring heat generated by the inductor 23 during operation from the multiple second protrusions 157a to the outside of the box 10, which is conducive to improving the heat dissipation efficiency of the inductor 23.

[0138] like Figure 4 and Figure 5 As shown, the design in which the projection of the second through hole 168a of the connecting shell 16 (including the first connecting shell 16a and the second connecting shell 16b) in the Y-axis direction overlaps with the projection of the second protrusion 157a in the Y-axis direction can prevent the connecting shell 16 from covering the second protrusion 157a, ensuring that the heat generated by the inductor 23 (including the first inductor 23a and the second inductor 23b) during operation can be transferred from the second through hole 168a to the outside of the case 10 through the multiple second protrusions 157a. This is beneficial to improving the efficiency of transferring the heat generated by the inductor 23 during operation to the outside of the case 10 through the multiple second protrusions 157a, and is beneficial to improving the heat dissipation efficiency of the inductor 23.

[0139] like Figure 5 、 Figure 6 and Figure 11 As shown, in some embodiments, in the X-axis direction, the input module 241, output module 242, and functional module 243 are all mounted on one side of the circuit board 21 and face the fourth section 1521, and the input module 241, output module 242, and functional module 243 are all spaced apart from the fourth section 1521. In other words, in the X-axis direction, the auxiliary module 24 is mounted on one side of the circuit board 21 and faces the housing 11, and the auxiliary module 24 is spaced apart from the housing 11. In other embodiments, the input module 241, output module 242, and functional module 243 may also contact the fourth section 1521, and the auxiliary module 24 may also contact the housing 11.

[0140] In the Z-axis direction, the input module 241, output module 242, and functional module 243 are all located on one side of the power module 22 and facing away from the inductor 23. The input module 241, output module 242, and functional module 243 are all spaced apart from the power module 22. In other words, in the Z-axis direction, the auxiliary module 24 is located on one side of the power module 22 and facing away from the inductor 23. The auxiliary module 24 is spaced apart from the power module 22. In the Y-axis direction, the input module 241, functional module 243, and output module 242 are spaced apart from each other.

[0141] In the Z-axis direction, the input module 241, output module 242, and functional module 243 are located on one side of the partition 155 and facing away from the inductor 23. The input module 241, output module 242, and functional module 243 are all spaced apart from the partition 155. In other words, in the Z-axis direction, the auxiliary module 24 is located on one side of the partition 155 and facing away from the inductor 23. The auxiliary module 24 is spaced apart from the partition 155. In other words, the partition 155 is located between the auxiliary module 24 and the inductor 23. The design of the partition 155 acts as a thermal shield, preventing the transfer of significant heat generated by the inductor 23 during operation to the auxiliary module 24. This helps reduce thermal crosstalk from the inductor 23 to the auxiliary module 24, thereby improving the performance of both the inductor 23 and the auxiliary module 24.

[0142] It can be understood that the auxiliary module 24 is accommodated in the second mounting groove 156b, and the auxiliary module 24 is accommodated in the accommodating cavity 14. In the Z-axis direction (i.e., the third direction), the auxiliary module 24 is located on one side of the inductor 23 and faces away from the groove 156, and the auxiliary module 24 is spaced apart from the inductor 23. The projection of the auxiliary module 24 in the Z-axis direction (i.e., the third direction) overlaps with the projection of the groove 156 in the Z-axis direction (i.e., the third direction). The design in which the projection of the auxiliary module 24 in the Z-axis direction (i.e., the third direction) overlaps with the projection of the groove 156 in the Z-axis direction (i.e., the third direction) is conducive to reducing the size of the box 10 in the X-axis direction (i.e., the first direction), is conducive to improving the space utilization of the box 10, is conducive to the miniaturized design of the box 10, is conducive to the miniaturized design of the power conversion device 200, and is conducive to improving the power density of the power conversion device 200.

[0143] The projection of the auxiliary module 24 in the X-axis direction (i.e., the first direction) overlaps with the projection of the plurality of third protrusions 157b in the X-axis direction (i.e., the first direction). It can be understood that, in the X-axis direction, the plurality of third protrusions 157b are disposed on one side of the housing 11 and face away from the auxiliary module 24. That is, the plurality of third protrusions 157b are disposed on one side of the housing 11, and in the X-axis direction (i.e., the first direction), the plurality of third protrusions 157b face away from the auxiliary module 24.

[0144] The heat generated by the auxiliary module 24 during operation can be transferred to the outside of the housing 10 through the housing 11 and the multiple third protrusions 157b, thereby dissipating heat from the auxiliary module 24. The design of the multiple third protrusions 157b helps increase the heat dissipation area through which the heat generated by the auxiliary module 24 during operation is transferred to the outside of the housing 10 through the housing 11, thereby improving the efficiency of heat transfer from the auxiliary module 24 during operation through the housing 11 to the outside of the housing 10, and thus improving the heat dissipation efficiency of the auxiliary module 24.

[0145] The design in which the projection of the auxiliary module 24 in the X-axis direction (i.e., the first direction) overlaps with the projection of multiple third protrusions 157b in the X-axis direction (i.e., the first direction) is conducive to shortening the heat dissipation path between the auxiliary module 24 and the third protrusions 157b, and is conducive to improving the efficiency of transferring the heat generated by the auxiliary module 24 during operation from the multiple third protrusions 157b to the outside of the box 10, and is conducive to improving the heat dissipation efficiency of the auxiliary module 24.

[0146] like Figure 4 and Figure 5 As shown, the projection of the third through hole 168b of the connecting shell 16 (including the first connecting shell 16a and the second connecting shell 16b) in the Y-axis direction and the projection of the third protrusion 157b in the Y-axis direction are designed to overlap, which can avoid the connecting shell 16 covering the third protrusion 157b, and ensure that the heat generated by the auxiliary module 24 (including the input module 241, the output module 242 and the functional module 243) during operation can be transferred from the third through hole 168b to the outside of the box body 10 through multiple third protrusions 157b, which is beneficial to improving the efficiency of transferring the heat generated by the auxiliary module 24 during operation to the outside of the box body 10 through multiple third protrusions 157b, and is beneficial to improving the heat dissipation efficiency of the auxiliary module 24.

[0147] The design of the projection of the operating hole 168c of the connecting shell 16 (including the first connecting shell 16a and the second connecting shell 16b) in the Y-axis direction overlapping with the projection of the third protrusion 157b in the Y-axis direction can avoid the connecting shell 16 covering the third protrusion 157b, and ensure that the heat generated by the auxiliary module 24 (including the input module 241, the output module 242 and the functional module 243) during operation can be transferred from the operating hole 168c to the outside of the box body 10 through multiple third protrusions 157b, which is beneficial to improving the efficiency of transferring the heat generated by the auxiliary module 24 during operation to the outside of the box body 10 through multiple third protrusions 157b, and is beneficial to improving the heat dissipation efficiency of the auxiliary module 24.

[0148] like Figure 5 、 Figure 6 and Figure 11As shown, in some embodiments, in the X-axis direction, capacitor 25 is mounted on one side of circuit board 21 and faces the tenth segment 1541, with capacitor 25 spaced apart from the tenth segment 1541. In other words, in the X-axis direction, capacitor 25 is mounted on one side of circuit board 21 and faces the housing 11, with capacitor 25 spaced apart from the housing 11. In other embodiments, capacitor 25 may also contact the tenth segment 1541, or may also contact the housing 11.

[0149] In the Z-axis direction, capacitor 25 is located on one side of power module 22 and faces away from inductor 23. Capacitor 25 is spaced apart from power module 22. Capacitor 25 is located between second section 1512 and eleventh section 1542 and spaced apart from second section 1512 and eleventh section 1542. Capacitor 25 is housed in third mounting groove 156c, and capacitor 25 is housed in housing cavity 14. In the Z-axis direction, capacitor 25 is located on one side of groove 156 and faces away from inductor 23. Capacitor 25 is spaced apart from groove 156. That is, in the Z-axis direction (i.e., the third direction), capacitor 25 is located on one side of groove 156 and spaced apart from groove 156. The projection of capacitor 25 in the Z-axis direction (i.e., the third direction) overlaps with the projection of groove 156 in the Z-axis direction (i.e., the third direction).

[0150] The design in which the projection of the capacitor 25 in the Z-axis direction (i.e., the third direction) overlaps with the projection of the groove 156 in the Z-axis direction (i.e., the third direction) is beneficial to reducing the size of the box 10 in the X-axis direction (i.e., the first direction), improving the space utilization of the box 10, and facilitating the miniaturization design of the box 10, as well as the miniaturization design of the power conversion device 200, and improving the power density of the power conversion device 200.

[0151] The projection of the capacitor 25 in the X-axis direction (i.e., the first direction) overlaps with the projection of the plurality of fourth protrusions 157c in the X-axis direction (i.e., the first direction). It is understood that, in the X-axis direction, the plurality of fourth protrusions 157c are disposed on one side of the housing 11 and face away from the capacitor 25. That is, the plurality of fourth protrusions 157c are disposed on one side of the housing 11, and in the X-axis direction (i.e., the first direction), the plurality of fourth protrusions 157c face away from the capacitor 25. Heat generated by the capacitor 25 during operation can be transferred to the exterior of the housing 10 via the housing 11 and the plurality of fourth protrusions 157c, thereby dissipating heat from the capacitor 25. The design of the plurality of fourth protrusions 157c is beneficial for increasing the heat dissipation area of ​​the heat generated by the capacitor 25 during operation that is transferred to the exterior of the housing 10 via the housing 11, thereby increasing the efficiency of the heat generated by the capacitor 25 during operation that is transferred to the exterior of the housing 10 via the housing 11, and thereby improving the heat dissipation efficiency of the capacitor 25.

[0152] The design in which the projection of the capacitor 25 in the X-axis direction (i.e., the first direction) overlaps with the projection of the multiple fourth protrusions 157c in the X-axis direction (i.e., the first direction) is conducive to shortening the heat dissipation path between the capacitor 25 and the fourth protrusions 157c, and is conducive to improving the efficiency of transferring the heat generated by the capacitor 25 during operation from the multiple fourth protrusions 157c to the outside of the box 10, which is conducive to improving the heat dissipation efficiency of the capacitor 25.

[0153] like Figure 4 and Figure 5 As shown, the projection of the first through hole 168 of the connecting shell 16 (including the first connecting shell 16a and the second connecting shell 16b) in the Y-axis direction overlaps with the projection of the fourth protrusion 157c in the Y-axis direction. This can prevent the connecting shell 16 from covering the fourth protrusion 157c, thereby ensuring that the heat generated by the capacitor 25 during operation can be transferred from the first through hole 168 to the outside of the box body 10 through the multiple fourth protrusions 157c, which is beneficial to improving the efficiency of transferring the heat generated by the capacitor 25 during operation to the outside of the box body 10 through the multiple fourth protrusions 157c, and is beneficial to improving the heat dissipation efficiency of the capacitor 25.

[0154] It can be understood that the circuit board 21, the power module 22, the inductor 23, the auxiliary module 24 and the capacitor 25 are all accommodated in the accommodating cavity 14. The shape of the accommodating cavity 14 matches the circuit board 21, the power module 22, the inductor 23, the auxiliary module 24 and the capacitor 25. Among them, the depth dimension of the accommodating cavity 14 at the capacitor 25 (i.e., the dimension in the first direction), the depth dimension of the accommodating cavity 14 at the inductor 23, and the depth dimension of the accommodating cavity 14 at the auxiliary module 24 are all greater than the depth dimension of the accommodating cavity 14 at the power module 22. This is conducive to improving the space utilization of the accommodating cavity 14, improving the space utilization of the box 10, facilitating the miniaturization design of the box 10, facilitating the miniaturization design of the power conversion device 200, and improving the power density of the power conversion device 200.

[0155] See also Figure 12 and Figure 13 , and combined with Figure 4 、 Figure 5 and Figure 6 , Figure 12 yes Figure 4 The schematic diagram of the three-dimensional structure of the heat dissipation assembly 30 (with the fixing member 32 omitted) of the power conversion device 200 is shown at another angle. Figure 13 yes Figure 12 The schematic diagram of the exploded three-dimensional structure of the heat dissipation assembly 30 is shown.

[0156] like Figure 4 、 Figure 5 and Figure 12As shown, in some embodiments, in the X-axis direction, the heat dissipation assembly 30 is arranged on one side of the multiple first protrusions 157 and faces away from the housing 11. The heat dissipation assembly 30 includes an air scoop 31, a fixing member 32, and a fan 33. Exemplarily, the number of fixing members 32 is four. The four fixing members 32 are divided into two first fixing members 32a and two second fixing members 32b. In other embodiments, the number of fixing members 32 may also be one, two, or more. In the X-axis direction, the air scoop 31 is arranged on one side of the multiple first protrusions 157 and faces away from the housing 11 through two first fixing members 32a and two second fixing members 32b. That is, in the X-axis direction (i.e., the first direction), the air scoop 31 is arranged on one side of the multiple first protrusions 157 and faces away from the housing 11, and the air scoop 31 covers the first opening 1561 of the groove 156. The air scoop 31 covers the groove 156. The fan 33 is mounted on one side of the air guide cover 31 and faces the plurality of first protrusions 157 .

[0157] like Figure 12 and Figure 13 As shown, in some embodiments, the air guide cover 31 includes a first matching portion 311, a second matching portion 312 and a third matching portion 313. In the X-axis direction, the second matching portion 312 is arranged on one side of the first matching portion 311, and the second matching portion 312 is fixedly stacked on one side of the first matching portion 311. Exemplarily, the number of the second matching portions 312 is 2. In the Y-axis direction, the two second matching portions 312 are arranged opposite to each other and spaced apart. In the Z-axis direction, the third matching portion 313 is arranged on one side of the first matching portion 311, and the third matching portion 313 is fixedly stacked on one side of the first matching portion 311. And in the Z-axis direction, the third matching portion 313 is arranged on one side of the two second matching portions 312, and the third matching portion 313 is fixedly stacked on one side of the two second matching portions 312.

[0158] like Figure 4 、 Figure 5 and Figure 6 As shown, in the X-axis direction, the first mating portion 311 is located on one side of the multiple first protrusions 157 and faces away from the main housing 15. The first mating portion 311 is located on one side of the multiple first protrusions 157 and faces away from the housing 11. The first mating portion 311 is spaced apart from the multiple first protrusions 157. The projection of the first mating portion 311 in the X-axis direction covers the projection of the groove 156 in the X-axis direction. The projection of the first mating portion 311 in the X-axis direction covers the projection of the first opening 1561 of the groove 156 in the X-axis direction. In the X-axis direction, the first mating portion 311 covers the first opening 1561 of the groove 156, and the first mating portion 311 covers the groove 156. The projection of the first mating portion 311 in the X-axis direction covers the projection of the multiple first protrusions in the X-axis direction.

[0159] In the X-axis direction, the first mating portion 311 is located on one side of the plurality of second protrusions 157a and faces away from the main housing 15. The first mating portion 311 is located on one side of the plurality of second protrusions 157a and faces away from the housing 11. The first mating portion 311 is spaced apart from the plurality of second protrusions 157a. The projection of the first mating portion 311 in the X-axis direction covers the projection of the plurality of second protrusions 157a in the X-axis direction.

[0160] In the X-axis direction, the second mating portion 312 faces the main housing 15 and the second mating portion 312 faces the housing 11. In the Y-axis direction, the two second mating portions 312 are located between the first connecting housing 16a and the second connecting housing 16b, with one second mating portion 312 stacked with the first connecting housing 16a and the other second mating portion 312 stacked with the second connecting housing 16b. The projection of the second mating portion 312 in the Y-axis direction overlaps with the projection of the second opening 1562 of the groove 156 in the Y-axis direction. The projection of the second mating portion 312 in the Y-axis direction overlaps with the projection of the mating through-hole 165 of the connecting housing 16 in the Y-axis direction. Furthermore, the projection of the second mating portion 312 in the Y-axis direction is spaced apart from the projections of the multiple first protrusions 157 in the Y-axis direction. It can be understood that the multiple first protrusions 157 are exposed to the outside of the air scoop 31 from the second opening 1562 of the groove 156 and the mating through-hole 165 of the connecting housing 16. That is, the plurality of first protrusions 157 are exposed to the outside of the air guide cover 31 from the second opening 1562 of the groove 156 .

[0161] The projection of the second mating portion 312 in the Y-axis direction is spaced apart from the projections of the plurality of second protrusions 157a in the Y-axis direction. The plurality of second protrusions 157a are exposed outside the air scoop 31. In the Z-axis direction, the third mating portion 313 is located to one side of the plurality of fourth protrusions 157c and faces the groove 156. The third mating portion 313 is spaced apart from the plurality of fourth protrusions 157c.

[0162] like Figure 4 、 Figure 6 and Figure 12 As shown, in some embodiments, the second mating portion 312 is provided with a fixing hole 3121. That is, the air scoop 31 is provided with a fixing hole 3121. The fixing hole 3121 extends through the second mating portion 312 along the Y-axis. For example, there are multiple fixing holes 3121, and specifically, there are two fixing holes 3121. In other embodiments, the number of fixing holes 3121 may be one, three, or more. The multiple fixing holes 3121 are spaced apart along the Z-axis.

[0163] The two fixing holes 3121 of one second mating portion 312 are connected to the first through-hole 167a and the second through-hole 167b of the first connecting shell 16a, respectively. One first fixing member 32a is inserted into one fixing hole 3121 of the second mating portion 312 and the first through-hole 167a of the first connecting shell 16a, while another first fixing member 32a is inserted into the other fixing hole 3121 of the second mating portion 312 and the second through-hole 167b of the first connecting shell 16a.

[0164] The two fixing holes 3121 of the second mating portion 312 are connected to the first through-hole 167a and the second through-hole 167b of the second connecting shell 16b, respectively. A second fixing member 32b is inserted into one fixing hole 3121 of the second mating portion 312 and the first through-hole 167a of the second connecting shell 16b. Another second fixing member 32b is inserted into the other fixing hole 3121 of the second mating portion 312 and the second through-hole 167b of the second connecting shell 16b. Thus, the air scoop 31 is installed between the first connecting shell 16a and the second connecting shell 16b. The air scoop 31 is positioned on one side of the plurality of first protrusions 157 and faces away from the housing 11. This simple and stable structure facilitates design and helps reduce manufacturing costs.

[0165] like Figure 4 、 Figure 5 and Figure 13 As shown, in some embodiments, the first matching portion 311 is provided with an air inlet hole 3111. That is, the air guide cover 31 is provided with an air inlet hole 3111, and the air inlet hole 3111 passes through the first matching portion 311 along the X-axis direction. The air inlet hole 3111 passes through the air guide cover 31 along the X-axis direction. The air inlet hole 3111 is connected to the first opening 1561 of the groove 156, and the air inlet hole 3111 is connected to the groove 156. In other words, the air inlet hole 3111 extends along the X-axis direction (i.e., the first direction) and is connected to the first opening 1561. Exemplarily, the number of air inlet holes 3111 is multiple, and specifically, the number of air inlet holes 3111 is 2. In other embodiments, the number of air inlet holes 3111 may also be 1, 3, or more. The multiple air inlet holes 3111 are arranged at intervals along the Y-axis direction.

[0166] In some embodiments, the first mating portion 311 is provided with an air guide portion 3112. The air guide portion 3112 is disposed on one side of the first mating portion 311 and faces the plurality of first protrusions 157. Specifically, the air guide portion 3112 is fixedly stacked on one side of the first mating portion 311 and faces the plurality of first protrusions 157. That is, the air guide portion 3112 is provided on one side of the air guide cover 31, and in the X-axis direction, the air guide portion 3112 faces the plurality of first protrusions 157. The air guide portion 3112 is spaced apart from the plurality of first protrusions 157. Exemplarily, the number of air guide portions 3112 is two. In the Y-axis direction, the two air guide portions 3112 are disposed on opposite sides of the plurality of air inlet holes 3111 and spaced apart from the plurality of air inlet holes 3111. In other embodiments, the number of air guide portions 3112 may also be one, three, or more.

[0167] In some embodiments, the fan 33 is disposed on one side of the first mating portion 311 and faces the multiple first protrusions 157. Specifically, the fan 33 is fixedly stacked on one side of the first mating portion 311 and faces the multiple first protrusions 157. The fan 33 is spaced apart from the multiple first protrusions 157. In the Y-axis direction, the fan 33 is located between the two air guides 3112 and spaced apart from the two air guides 3112. For example, the number of fans 33 is 2. In the Y-axis direction, the two fans 33 are spaced apart. The projections of the two fans 33 in the X-axis direction correspond one to one and overlap with the projections of the two air inlet holes 3111 in the X-axis direction. In some other embodiments, the number of fans 33 is also 1, 3, or more.

[0168] The fan 33 is used to generate heat dissipation air. The heat dissipation air flows from the outside of the air guide 31 through the air inlet holes 3111 to the multiple first protrusions 157. The heat dissipation air then flows out of the air guide 31 through the multiple first protrusions 157, the second opening 1562 of the groove 156, and the mating through-holes 165 of the connecting shell 16. The air inlet holes 3111 are connected to the first opening 1561, and the multiple first protrusions 157 are exposed to the outside of the air guide 31 through the second opening 1562 of the groove 156. This ensures that the heat dissipation air can flow from the outside of the air guide 31 through the air inlet holes 3111 to the multiple first protrusions 157, and then out of the air guide 31 through the second opening 1562, thereby dissipating heat from the multiple first protrusions 157 and, in turn, dissipating heat from the power module 22. Furthermore, the heat dissipation air can flow out of the air guide 31 along the Z-axis through the multiple first protrusions 157 and the multiple second protrusions 157a. The heat dissipation of the plurality of first protrusions 157 and the plurality of second protrusions 157 a is achieved through the heat dissipation air, thereby achieving rapid heat dissipation of the power module 22 and the inductor 23 .

[0169] The design of the air guide 31 can guide the cooling air, which is beneficial for improving the heat dissipation efficiency of the multiple first protrusions 157 and the multiple second protrusions 157a, and is beneficial for improving the heat dissipation efficiency of the power module 22 and the inductor 23. The design of the air guide portion 3112 can guide the cooling air generated by the fan 33, ensuring that the cooling air is stably blown toward the multiple first protrusions 157, which is beneficial for improving the heat dissipation efficiency of the multiple first protrusions 157 and is beneficial for improving the heat dissipation efficiency of the power module 22.

[0170] See also Figure 14 , and combined with Figure 5 , Figure 14 yes Figure 4 The power conversion device 200 shown is a schematic structural diagram of another embodiment cut along AA.

[0171] In some other embodiments, in the X-axis direction, the capacitor 25 is mounted on one side of the circuit board 21 and faces the fourth section 1521. The capacitor 25 is mounted on one side of the circuit board 21 and faces the second portion 152. The capacitor 25 is located between the circuit board 21 and the fourth section 1521. The capacitor 25 is spaced apart from the fourth section 1521, and the capacitor 25 is spaced apart from the second portion 152. In the Z-axis direction, the capacitor 25 is located on one side of the auxiliary module 24 and faces away from the partition 155. The capacitor 25 is located on one side of the auxiliary module 24 and faces away from the inductor 23. The capacitor 25 is spaced apart from the auxiliary module 24. The capacitor 25 is accommodated in the second mounting groove 156b.

[0172] Thus, in the Z-axis direction, capacitor 25 is also located on one side of groove 156 and spaced apart from groove 156. The projection of capacitor 25 in the Z-axis direction overlaps with the projection of groove 156 in the Z-axis direction, which is also beneficial for reducing the size of housing 10 in the X-axis direction (i.e., the first direction), improving the space utilization of housing 10, facilitating the miniaturization design of housing 10, facilitating the miniaturization design of power conversion device 200, and improving the power density of power conversion device 200. The heat generated by capacitor 25 during operation is transferred to the outside of housing 10 via fourth section 1521 (i.e., housing 11) and multiple third protrusions 157b. The multiple third protrusions 157b achieve rapid heat dissipation of capacitor 25.

[0173] Please refer again Figure 4 、 Figure 5 and Figure 14The embodiment of the present application provides a power conversion device 200, which includes a housing 10 and a power assembly 20. The housing 10 includes a shell 11 and a cover 12. In the X-axis direction (i.e., the first direction), the cover 12 is mounted on one side of the shell 11 and encloses the shell 11 to form a receiving cavity 14. The power assembly 20 is received in the receiving cavity 14. The power assembly 20 includes a circuit board 21 and a power module 22. In the X-axis direction (i.e., the first direction), the power module 22 is mounted on one side of the circuit board 21 and faces the shell 11, and the power module 22 contacts the shell 11. A groove 156 is provided on one side of the shell 11. The groove 156 extends along the X-axis direction (i.e., the first direction) and has a first opening 1561. In the X-axis direction (i.e., the first direction), the first opening 1561 of the groove 156 faces away from the power module 22. A plurality of first protrusions 157 are provided in the groove 156, and the plurality of first protrusions 157 are arranged at intervals.

[0174] In the power conversion device 200 provided in the embodiment of the present application, the heat generated by the power module 22 during operation is transferred to the exterior of the housing 10 via the housing 11 and the plurality of first protrusions 157, thereby achieving rapid heat dissipation of the power module 22. The design of the plurality of first protrusions 157 facilitates increasing the heat dissipation area through which the heat generated by the power module 22 during operation is transferred to the exterior of the housing 10 via the housing 11, thereby improving the efficiency of heat transfer from the power module 22 during operation via the housing 11 to the exterior of the housing 10, and thereby improving the heat dissipation efficiency of the power module 22.

[0175] Compared with the existing power conversion device 200, the power conversion device 200 provided in the present application, since multiple first protrusions 157 are accommodated in the groove 156, greatly improves the space utilization of the box 10 on the basis of ensuring the heat dissipation efficiency of the power module 22, is beneficial to reducing the size of the power conversion device 200 in the X-axis direction (i.e., the first direction), and is beneficial to the miniaturized design of the power conversion device 200.

Claims

1. A power conversion device, characterized in that: The power conversion device comprises: A box body, the box body comprising a shell and a cover plate, wherein in a first direction, the cover plate is mounted on one side of the shell and encloses the shell to form a receiving cavity; and A power component, the power component is received in the receiving cavity, the power component comprises a circuit board and a power module, in the first direction, the power module is mounted on one side of the circuit board and faces the housing, and the power module is in contact with the housing; A groove is provided on one side of the shell, the groove extends along the first direction and has a first opening, in the first direction, the first opening of the groove faces away from the power module, and a plurality of first protrusions are provided in the groove, and the plurality of first protrusions are arranged at intervals.

2. The power conversion device according to claim 1, characterized in that: A projection of the power module in the first direction overlaps with projections of the first protrusions in the first direction.

3. The power conversion device according to claim 1, characterized in that: The groove extends along a second direction and has a second opening. A plurality of the first protrusions are exposed to the outside of the box body from the first opening and the second opening. The second direction is perpendicular to the first direction.

4. The power conversion device according to claim 3, characterized in that: The housing comprises a main housing and a connecting housing, wherein the connecting housing is disposed on one side of the main housing in the second direction, and the cover plate is disposed on one side of the main housing and the connecting housing in the first direction, the cover plate, the connecting housing and the main housing are surrounded to form the receiving cavity, the power module is in contact with the main housing, and the groove is disposed on the main housing; The connection shell is provided with a matching through hole, the matching through hole penetrates the connection shell along the second direction, and the matching through hole is communicated with the second opening.

5. The power conversion device according to claim 4, characterized in that: The main shell includes a first portion, a second portion, a third portion and a fourth portion. In the first direction, the second portion is arranged opposite to the first portion. In the third direction, the second portion is located at one side of the first portion. The third portion is arranged between the first portion and the second portion. In the third direction, the fourth portion is arranged at one side of the first portion and faces away from the third portion. The second part and the fourth part are both mounted on the cover plate. In the first direction, the power module is fixedly stacked on one side of the first part and faces away from the second part. The first part and the third part together form the groove. In the first direction, a plurality of the first protrusions are arranged on one side of the first part and face away from the power module. The third direction is arranged perpendicular to the second direction and the first direction.

6. The power conversion device according to claim 4, characterized in that: A receiving groove is provided on one side of the connecting shell, and the receiving groove extends along the second direction and has an opening. In the second direction, the opening of the receiving groove faces the main shell. The power conversion device includes a connecting member, and the connecting member is received in the receiving groove. The connecting member is fixedly stacked with the main shell.

7. The power conversion device according to claim 4, characterized in that: The main shell is provided with a mounting hole, which extends along the second direction. The connecting shell is provided with a connecting hole, which penetrates the connecting shell along the second direction. The connecting hole is connected to the mounting hole. The power conversion device includes a fastener, which is installed in the mounting hole and the connecting hole.

8. The power conversion device according to claim 4, characterized in that: The connecting shell is provided with a hanging groove, and in the third direction, the hanging groove is located on one side of the matching through hole, the hanging groove extends along the third direction and has an opening, and in the third direction, the opening of the hanging groove faces the matching through hole, and the third direction is arranged perpendicular to the second direction and the first direction.

9. The power conversion device according to claim 4, characterized in that: The connection shell is provided with an operation hole, the operation hole penetrates the connection shell along the second direction, the operation hole and the matching through hole are arranged at intervals, and the projection of the operation hole in the second direction is arranged at intervals from the projection of the receiving cavity in the second direction.

10. The power conversion device according to claim 3, characterized in that: The power conversion device includes an air guide cover, which is arranged on one side of the multiple first protrusions and faces away from the shell in the first direction, and covers the first opening of the groove. The air guide cover is provided with an air inlet hole, which extends along the first direction and is connected to the first opening. The multiple first protrusions are exposed to the outside of the air guide cover from the second opening of the groove.

11. The power conversion device according to claim 1, characterized in that: The power component includes an inductor. In the first direction, the inductor is installed on one side of the circuit board and faces the shell. In the third direction, the inductor is located on one side of the groove and is spaced apart from the groove. The projection of the inductor in the third direction overlaps with the projection of the groove in the third direction. The third direction is perpendicular to the first direction.

12. The power conversion device according to claim 11, characterized in that: A plurality of second protrusions are provided on one side of the shell, and the plurality of second protrusions are arranged at intervals. In the first direction, the plurality of second protrusions face away from the inductor, and the projection of the inductor in the first direction overlaps with the projection of the plurality of second protrusions in the first direction.

13. The power conversion device according to claim 11, characterized in that: The power component includes an auxiliary module. In the first direction, the auxiliary module is installed on one side of the circuit board and faces the shell. In the third direction, the auxiliary module is located on one side of the inductor and faces away from the groove. The projection of the auxiliary module in the third direction overlaps with the projection of the groove in the third direction.

14. The power conversion device according to claim 13, characterized in that: A partition is provided on one side of the housing. In the first direction, the partition faces the cover plate. In the third direction, the partition is located between the auxiliary module and the inductor.

15. The power conversion device according to claim 13, characterized in that: A plurality of third protrusions are provided on one side of the shell, and the plurality of third protrusions are arranged at intervals. In the first direction, the plurality of third protrusions face away from the auxiliary module, and a projection of the auxiliary module in the first direction overlaps with a projection of the plurality of third protrusions in the first direction.

16. The power conversion device according to claim 1, characterized in that: The power component includes a capacitor. In the first direction, the capacitor is installed on one side of the circuit board and faces the shell. In the third direction, the capacitor is located on one side of the groove and is spaced apart from the groove. The projection of the capacitor in the third direction overlaps with the projection of the groove in the third direction. The third direction is perpendicular to the first direction.

17. The power conversion device according to claim 16, characterized in that: A plurality of fourth protrusions are provided on one side of the shell, and the plurality of fourth protrusions are arranged at intervals. In the first direction, the plurality of fourth protrusions face away from the capacitor, and a projection of the capacitor in the first direction overlaps with a projection of the plurality of fourth protrusions in the first direction.

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