Power conversion device

Abstract

The utility model discloses a power conversion device, which relates to the technical field of power conversion and comprises a voltage regulating assembly, a first circuit board and an electric connecting piece. The first circuit board and the voltage adjusting assembly are arranged at intervals, the electric connecting piece is provided with a first connecting part and a second connecting part, the first connecting part is connected with the voltage adjusting assembly, and the second connecting part is connected with the first circuit board to support the first circuit board. Wherein the electric connecting piece is a rigid piece, the first connecting part or the second connecting part is integrally formed on the electric connecting piece, or the first connecting part and the second connecting part are integrally formed. According to the power conversion device, the conductive stability between the voltage adjusting assembly and the first circuit board can be improved, and the installation operation of the electric connecting piece is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of power conversion, in particular to a power conversion device. Background Art

[0002] In the prior art, different circuit elements in a power conversion device are arranged in an interlaced manner on a circuit board. As power conversion devices develop towards high power, high power density and large capacity, the layout and conductive structure of different electronic devices in the power conversion device are becoming more and more complex. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a power conversion device, which can improve the conductive stability of the voltage regulating component and the first circuit board and simplify the installation operation of the electrical connector.

[0004] According to an embodiment of the utility model, the power conversion device includes: a voltage regulating component; a first circuit board, the first circuit board is spaced apart from the voltage regulating component; an electrical connector, the electrical connector having a first connecting portion and a second connecting portion, the first connecting portion is connected to the voltage regulating component, and the second connecting portion is connected to the first circuit board to support the first circuit board; wherein the electrical connector is a rigid component, and the first connecting portion and / or the second connecting portion are integrally formed on the electrical connector.

[0005] According to the power conversion device of the embodiment of the utility model, the first circuit board and the voltage regulating assembly are connected at the same time by setting an electrical connector, and the electrical connector is a rigid member. When the first circuit board and the voltage regulating assembly realize current conduction through the electrical connector, the electrical connector can also play the effect of fixing the first circuit board, so as to realize the dual purpose of the electrical connector and improve the stability of the current conduction between the voltage regulating assembly and the first circuit board through the electrical connector. At the same time, the structure of the electrical connector is simple, which can simplify the installation operation of the electrical connector in the power conversion device.

[0006] In some embodiments, the electrical connector includes a main body portion, the main body portion is plate-shaped, and the first connecting portion and the second connecting portion are formed at both ends of the main body portion in a length direction.

[0007] Furthermore, the second connecting part is a first supporting column, and the first supporting column is provided with a connecting thread at an end away from the main body, and the power conversion device also includes a crimping nut assembled at the connecting thread; at least a part of the first supporting column is a conductive part, and the main body and the first circuit board are electrically connected through the conductive part.

[0008] In some embodiments, the power conversion device also includes an insulating member, which is arranged on the surface of the voltage regulating component, and the electrical connector is placed on the insulating member at least at the first connecting portion; the first connecting portion passes through the insulating member and extends into the voltage regulating component, or the output terminal of the voltage regulating component passes through the insulating member and is connected to the first connecting portion.

[0009] Furthermore, the first connection portion is a welding hole, and the output terminal of the voltage regulating component is welded to the welding hole.

[0010] In some embodiments, the insulating member is an insulating cover or an insulating film, the insulating member is arranged between the voltage regulating component and the electrical connector, and the first circuit board is arranged on a side of the electrical connector away from the voltage regulating component; the first circuit board and the electrical connector at least partially overlap in their orthographic projection on the voltage regulating component.

[0011] In some embodiments, the power conversion device further includes a support member, the first circuit board is connected to the voltage regulating assembly via the support member, and the support member is an insulating member.

[0012] In some embodiments, the electrical connection member is a second circuit board or a metal strip.

[0013] In some embodiments, the power conversion device also includes: a heat sink, which is arranged on one side of the voltage regulating component, and the first circuit board is arranged on the same side of the heat sink and the voltage regulating component, and the positive projections of the heat sink and the voltage regulating component on the first circuit board at least partially do not overlap.

[0014] In some embodiments, the first circuit board and the electrical connector are located on a low voltage side of the voltage regulating assembly.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a side view structural schematic diagram of a power conversion device according to an embodiment of the utility model;

[0018] Figure 2 A top view of the power conversion device according to an embodiment of the utility model;

[0019] Figure 3is a top view of an electrical connector according to an embodiment of the utility model;

[0020] Figure 4 for Figure 3 A side view of the electrical connector of the illustrated embodiment.

[0021] Reference numerals:

[0022] Power conversion device 100,

[0023] Voltage regulating component 10, outlet terminal 11,

[0024] The first circuit board 20,

[0025] The electrical connector 30, the first connecting portion 31, the second connecting portion 32, the main body 33,

[0026] The crimping nut 40 , the insulating member 50 , the heat sink 60 , and the housing 70 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The power conversion device 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, the power conversion device 100 according to the embodiment of the utility model includes: a voltage regulating component 10, a first circuit board 20 and an electrical connector 30. The first circuit board 20 is spaced apart from the voltage regulating component 10, and the electrical connector 30 has a first connecting portion 31 and a second connecting portion 32, the first connecting portion 31 is connected to the voltage regulating component 10, and the second connecting portion 32 is connected to the first circuit board 20 to support the first circuit board 20. The electrical connector 30 is a rigid component, and the first connecting portion 31 or the second connecting portion 32 is integrally formed on the electrical connector 30, or the first connecting portion 31 and the second connecting portion 32 are both integrally formed.

[0032] It is understandable that electromagnetic interference is likely to exist near the voltage regulating component 10, and spacing the first circuit board 20 from the voltage regulating component 10 can reduce the interference of the voltage regulating component 10 on the signals of the electronic components on the first circuit board 20. On the basis of spacing the first circuit board 20 from the voltage regulating component 10, due to the limitations of the wiring layout on the first circuit board 20 and the limitations of the structure of the voltage regulating component 10 itself, it is easy to cause the current input end of the first circuit board 20 and the current output end of the voltage regulating component 10 to not be directly opposite or to have a large distance therebetween.

[0033] At this time, it is necessary to set an electrical connector 30 between the first circuit board 20 and the voltage regulating component 10, and the first connecting part 31 corresponds to the current output end of the voltage regulating component 10, and the second connecting part 32 corresponds to the current input end of the first circuit board 20, so that the electrical connector 30 is electrically connected to the first circuit board 20 and the voltage regulating component 10 at the same time, so that the voltage regulating component 10 can achieve current conduction with the first circuit board 20 through the electrical connector 30.

[0034] Therefore, by setting the electrical connector 30 as a rigid member, the shape or structure of the electrical connector 30 itself is not easy to change. When the electrical connector 30 is connected to the first circuit board 20 and the voltage regulating component 10 at the same time, the electrical connector 30 is connected to the voltage regulating component 10 through the first connecting portion 31, so that the position of the electrical connector 30 relative to the voltage regulating component 10 is stable. At the same time, the electrical connector 30 can support the first circuit board 20 through the second connecting portion 32, and provide a function of fixing the first circuit board 20, so that the relative positions of the electrical connector 30, the first circuit board 20 and the voltage regulating component 10 can be kept stable, reducing or avoiding the risk of electrical connection reliability caused by the shaking of the electrical connector 30 relative to the first circuit board 20 or the voltage regulating component 10, and improving the stability of the current conducted between the voltage regulating component 10 and the first circuit board 20 through the electrical connector 30.

[0035] At the same time, the first connection part 31 or the second connection part 32 is integrally formed on the electrical connector 30, or the first connection part 31 and the second connection part 32 are both integrally formed, which can further improve the structural strength of the electrical connector 30 and reduce the number of parts of the electrical connector 30, thereby facilitating the installation of the electrical connector 30 in the power conversion device 100.

[0036] In addition, compared with the use of a flexible conductive harness to connect the first circuit board 20 and the voltage regulating assembly 10, the installation of the rigid electrical connector 30 is less difficult and can improve the installation accuracy, thereby ensuring the reliability of the electrical connection between the electrical connector 30 and the first circuit board 20 and the voltage regulating assembly 10. Moreover, compared with the space required for the bending of the conductive harness, the electrical connector 30 is smaller in size, thereby improving the space utilization rate within the power conversion device 100.

[0037] The power conversion device 100 of the present application is provided with an electrical connector 30 to simultaneously connect the first circuit board 20 and the voltage regulating assembly 10, and the electrical connector 30 is a rigid member. While the first circuit board 20 and the voltage regulating assembly 10 realize current conduction through the electrical connector 30, the electrical connector 30 can also play the role of fixing or supporting the first circuit board 20, thereby realizing the dual purpose of the electrical connector 30 and improving the stability of the current conduction between the voltage regulating assembly 10 and the first circuit board 20 through the electrical connector 30. At the same time, the electrical connector 30 has a simple structure, which can simplify the installation operation of the electrical connector 30 in the power conversion device 100.

[0038] In the present application, the number of the electrical connector 30 is not limited to one. Figure 2 In the example, the power conversion device 100 includes two electrical connectors 30, the first connecting parts 31 of the two electrical connectors 30 are both electrically connected to the voltage regulating component 10, and the second connecting parts 32 of the two electrical connectors 30 can be connected to the same first circuit board 20 or to different first circuit boards 20.

[0039] The present application does not limit the type of the power conversion device 100 , for example, the power conversion device 100 is a photovoltaic inverter or an energy storage converter. Based on different types of power conversion devices 100 , the type or structure of the voltage regulating component 10 is set corresponding to the type of the power conversion device 100 .

[0040] Preferably, the first connection portion 31 and the second connection portion 32 are both integrally formed on the electrical connector 30 . The electrical connector 30 is an integral piece, which can further simplify the installation operation of the electrical connector 30 on the power conversion device 100 .

[0041] In some embodiments, Figure 3 , Figure 4As shown, the electrical connector 30 includes a main body 33 , which is in a plate shape, and a first connecting portion 31 and a second connecting portion 32 are formed at two ends of the main body 33 in a length direction.

[0042] It is understandable that the main body 33 is set in a plate shape, so that the main body 33 is convenient for the surface of the voltage regulating component 10 to be set, so that the electrical connector 30 can get more support, and the structural stability of the electrical connector 30 is improved. The first circuit board 20 is also in a plate shape, and the main body 33 is set in a plate shape, which can also facilitate the main body 33 to be set parallel to the first circuit board 20. By adjusting the setting angle of the main body 33, the first connection part 31 is connected to the voltage regulating component 10, and the second connection part 32 is connected to the first circuit board 20.

[0043] In addition, the main body 33 is configured to be plate-shaped, which can reduce the difficulty of processing the main body 33 and reduce the processing cost of the electrical connector 30 .

[0044] It should be noted that the main body 33 can be set as a flat plate or a curved plate.

[0045] In the present application, the size of the main body 33 is not limited. Since the first connection portion 31 is connected to the current output end of the voltage regulating component 10, and the second connection portion 32 is connected to the current input end of the first circuit board 20, the size of the main body 33 can be set according to the distance between the current input end of the first circuit board 20 and the current output end of the voltage regulating component 10. When the power conversion device 100 includes multiple electrical connectors 30, the sizes of the main bodies 33 of different electrical connectors 30 can be different. Figure 2 In the example, the main bodies 33 of the two electrical connectors 30 are both flat plates, and the two main bodies 33 have different lengths.

[0046] In some specific embodiments, the electrical connector 30 is prefabricated as a plurality of standard parts of different sizes. When installing the electrical connector 30 in the power conversion device 100, the corresponding electrical connector 30 is selected from the standard parts of different sizes for installation, which can improve the versatility of the electrical connector 30 and improve the installation efficiency.

[0047] Furthermore, the second connecting portion 32 is a first support column, and the first support column is provided with a connecting thread at an end away from the main body portion 33. The power conversion device 100 also includes a crimping nut 40 assembled at the connecting thread. At least a portion of the first support column is a conductive portion, and the main body portion 33 and the first circuit board 20 are electrically connected through the conductive portion.

[0048] It can be understood that the first support column acts as a conductive part to electrically connect the main body 33 and the first circuit board 20 at the same time, and while the first support column acts as a conductive part, it can also provide support between the main body 33 and the first circuit board 20. The main body 33 and the first circuit board 20 are located at both ends of the first support column, so that there is a gap between the main body 33 and the first circuit board 20.

[0049] In this way, electrical contact between the main body 33 and the first circuit board 20 can be reduced or avoided, the risk of short circuit between the first circuit board 20 and the main body 33 can be reduced or avoided, and the current stability between the electrical connector 30 and the first circuit board 20 can be maintained.

[0050] At the same time, the crimping nut 40 can be pressed against the first circuit board 20. By cooperating with the connecting thread at the end of the first support column away from the first circuit board 20, the crimping nut 40 can press the first circuit board 20 against the end of the first support column away from the main body 33, thereby achieving the fixation of the first circuit board 20 at the end of the first support column away from the main body 33. The operation difficulty of cooperating with the connecting thread of the crimping nut 40 is relatively low, which can simplify the installation difficulty of connecting the first circuit board 20 with the first support column.

[0051] It should be noted that the present application does not limit whether the first support column is formed on the main body 33 or is an independent component. For example, when the second connecting portion 32 is integrally formed on the electrical connector 30, the first support column is integrally formed on the main body 33. For another example, the first support column is an independent component, and the main body 33 and the first circuit board 20 are respectively connected to the two ends of the first support column.

[0052] Preferably, the second connecting portion 32 includes a plurality of first supporting columns, and the first circuit board 20 is connected to one end of each first supporting column away from the main body portion 33 .

[0053] In some embodiments, Figure 1 , Figure 2 As shown, the power conversion device 100 further includes an insulating member 50, which is disposed on the surface of the voltage regulating assembly 10, and the electrical connector 30 is placed on the insulating member 50 at least at the first connecting portion 31. The first connecting portion 31 passes through the insulating member 50 and extends into the voltage regulating assembly 10, or the outlet terminal 11 of the voltage regulating assembly 10 passes through the insulating member 50 and is connected to the first connecting portion 31.

[0054] It is understandable that, under the influence of the magnetic field within the voltage regulating component 10 , there is a risk of generating induced current on the surface of the voltage regulating component 10 .

[0055] Therefore, the insulating member 50 can play an insulating protection role on the surface of the voltage regulating component 10, thereby preventing the induced current or leakage of the voltage regulating component 10 from being transmitted to the electrical connector 30 and the first circuit board 20, causing signal interference to the electronic components on the first circuit board 20, while avoiding or reducing leakage in the housing 70 of the power conversion device 100.

[0056] When the first connection part 31 passes through the insulating part 50 and extends into the voltage regulating component 10, while ensuring that the electrical connection part 30 is electrically connected to the voltage regulating component 10 through the first connection part 31, the insulating part 50 can provide insulation protection for at least a portion of the first connection part 31, thereby reducing or avoiding contact between the first connection part 31 and other structures in the power conversion device 100, reducing leakage, and ensuring the stability of current conduction through the first connection part 31.

[0057] Correspondingly, when the outlet terminal 11 of the voltage regulating assembly 10 passes through the insulating member 50 and is connected to the first connecting portion 31, as shown in FIG. Figure 1 As shown, while ensuring that the outlet terminal 11 is connected to the first connecting portion 31, the insulating member 50 can provide insulation protection for at least a portion of the outlet terminal 11, thereby reducing or avoiding contact between the outlet terminal 11 and other structures in the power conversion device 100, reducing leakage, and ensuring the stability of current conduction through the outlet terminal 11.

[0058] In addition, the electrical connector 30 rests on the insulating member 50 at least at the first connection portion 31, and the insulating member 50 is supported by the surface of the voltage regulating component 10. The electrical connector 30 can be supported by the insulating member 50 at least at the first connection portion 31, thereby improving the position stability of the electrical connector 30 relative to the voltage regulating component 10. On the basis of the more stable position of the electrical connector 30 itself, the stability of the electrical connector 30 in supporting the first circuit board 20 can be improved.

[0059] Preferably, when the output terminal 11 of the voltage regulating component 10 passes through the insulating part 50 and is connected to the first connecting part 31, the output terminal 11 adopts a metal strip. At this time, the output terminal 11 is a rigid structure, so that the position of the output terminal 11 relative to the first connecting part 31 and the voltage regulating component 10 can remain stable, and the structure of the output terminal 11 itself can also remain stable, reducing or avoiding the risk of electrical connection reliability caused by the shaking of the output terminal 11 relative to the first connecting part 31.

[0060] It should be noted that there is no limitation on the type of the metal strip. For example, the metal strip may be a copper bar.

[0061] In some specific embodiments, Figure 1 , Figure 3As shown, the electrical connector 30 is overlapped on the insulating member 50 at both the first connecting portion 31 and the second connecting portion 32, thereby improving the positional stability of the first connecting portion 31 relative to the voltage regulating component 10, ensuring that the electrical contact between the first connecting portion 31 and the voltage regulating component 10 remains stable, and improving the positional stability of the second connecting portion 32 relative to the first connecting portion 31 and the voltage regulating component 10, thereby improving the supporting stability of the second connecting portion 32 to the first circuit board 20.

[0062] Furthermore, when the electrical connector 30 includes a main body 33 , and the first connection portion 31 and the second connection portion 32 are formed at both ends of the main body 33 in the length direction, the main body 33 fits with the insulating member 50 , which can further improve the stability of the insulating member 50 supporting the electrical connector 30 .

[0063] Further, such as Figure 1 , Figure 3 As shown, the first connection portion 31 is a welding hole, and the outlet terminal 11 of the voltage regulating assembly 10 is welded and connected to the welding hole. Thus, the reliability of the connection between the first connection portion 31 and the outlet terminal 11 can be improved, and the first connection portion 31 is set as a welding hole. By passing the outlet terminal 11 through the welding hole, the connection position of the outlet terminal 11 in the electrical connector 30 can be positioned, thereby ensuring the reliable connection of the outlet terminal 11 in the welding hole.

[0064] In some embodiments, the insulating member 50 is an insulating cover or an insulating film, and the insulating member 50 is disposed between the voltage regulating component 10 and the electrical connector 30. The first circuit board 20 is disposed on the side of the electrical connector 30 away from the voltage regulating component 10, and the orthographic projections of the first circuit board 20 and the electrical connector 30 on the voltage regulating component 10 at least partially overlap.

[0065] It can be understood that the electrical connector 30 and the insulating member 50 are stacked between the first circuit board 20 and the voltage regulating component 10 , which can increase the distance between the voltage regulating component 10 and the first circuit board 20 .

[0066] Thus, the interference of the voltage regulating component 10 on the electronic component signals on the first circuit board 20 can be reduced, and the current stability on the first circuit board 20 can be improved. In addition, the first circuit board 20, the electrical connector 30 and the insulating member 50 are stacked in sequence, and the orthographic projections of the first circuit board 20 and the electrical connector 30 on the voltage regulating component 10 at least partially overlap, which can make full use of the space between the first circuit board 20 and the voltage regulating component 10, improve the space utilization rate in the power conversion device 100, and facilitate the miniaturization of the power conversion device 100.

[0067] Preferably, if Figure 1As shown, the projection of the electrical connector 30 on the voltage regulating component 10 is located within the projection of the first circuit board 20 on the voltage regulating component 10 , which can further improve the utilization rate of the gap space between the first circuit board 20 and the voltage regulating component 10 .

[0068] In some embodiments, the power conversion device 100 further includes: a support member (not shown in the figure), the first circuit board 20 is connected to the voltage regulating component 10 through the support member, and the support member is an insulating member.

[0069] It is understandable that the number of current input terminals on the first circuit board 20 is limited, and their positions are limited by the layout of electronic components on the first circuit board 20, that is, the number of connection positions of the second connection portion 32 on the first circuit board 20 is limited, and the connection positions are limited by the layout of electronic components on the first circuit board 20. When the size of the first circuit board 20 is large, the number of supporting points of the electrical connector 30 on the first circuit board 20 through the second connection portion 32 is limited, resulting in limited overall supporting force on the first circuit board 20, affecting the stability of the circuit board setting position.

[0070] Therefore, the support member can provide support for the first circuit board 20, and since the support member is an insulating member, when the support member is connected between the first circuit board 20 and the voltage regulating component 10, it will not interfere with the current conduction between the voltage regulating component 10 and the first circuit board 20, thereby improving the structural stability of the first circuit board 20 and the stability of the setting position.

[0071] It should be noted that the connection position of the support member relative to the first circuit board 20 is not limited in the present application, and the support member is arranged to avoid the electronic components on the first circuit board 20. For example, the connection position of the support member on the first circuit board 20 can be arranged according to the shape of the first circuit board 20 and the relative position to the electrical connector 30.

[0072] In some embodiments, the electrical connector 30 is a second circuit board or a metal strip, or the electrical connector 30 is composed of the second circuit board and the metal strip. Thus, the second circuit board and the metal strip can both conduct current, and the second circuit board and the metal strip are both rigid structures, which can ensure the stability of the electrical connector 30 itself.

[0073] It is understandable that when the size of the electrical connector 30 is small, the use of the metal strip can improve the current conduction capacity of the electrical connector 30. When the size of the electrical connector 30 is large, the use of the second circuit board can reduce or avoid the risk of leakage in the electrical connector 30.

[0074] exist Figure 3 , Figure 4 In the specific example, the electrical connector 30 is an integral piece, and the electrical connector 30 is a metal strip integrally forming a welding hole and a first supporting column.

[0075] In other specific embodiments, the electrical connector 30 uses a second circuit board, the first connecting portion 31 is a metal strip connected to the second circuit board, one end of the metal strip is connected to the second circuit board, and the other end of the metal strip extends into the voltage regulating assembly 10, and the second connecting portion 32 is a first support column integrally formed on the second circuit board, and the first support column is connected to and supports the first circuit board 20 at the end away from the second circuit board.

[0076] In the present application, the type of the metal strip is not limited. For example, the metal strip may be a copper bar.

[0077] In some specific embodiments, Figure 1 As shown, the power conversion device 100 also includes: a heat sink 60, which is arranged on one side of the voltage regulating component 10, and a first circuit board 20 is arranged on the same side of the heat sink 60 and the voltage regulating component 10, and the positive projections of the heat sink 60 and the voltage regulating component 10 on the first circuit board 20 do not overlap at least partially.

[0078] It is understandable that the voltage regulating component 10, the electrical connector 30 and the first circuit board 20 will generate heat during operation, and the heat sink 60 can dissipate heat for the voltage regulating component 10, the electrical connector 30 and the first circuit board 20. The heat dissipation effect of the heat sink 60 decreases as the distance from the heat sink 60 increases. Arranging the heat sink 60 on one side of the voltage regulating component 10 can ensure the heat dissipation effect of the heat sink 60 on the voltage regulating component 10.

[0079] Therefore, the positive projections of the heat sink 60 and the voltage regulating component 10 on the first circuit board 20 are at least partially non-overlapping, so that the first circuit board 20 can at least partially face the heat sink 60, thereby improving the heat dissipation efficiency of the heat sink 60 to the first circuit board 20.

[0080] It should be noted that the relative positions of the heat sink 60, the first circuit board 20 and the voltage regulating component 10 are not limited in the present application. The relative positions of the heat sink 60, the first circuit board 20 and the voltage regulating component 10 can be set according to the type of the power conversion device 100. For example, when the power conversion device 100 is a photovoltaic inverter, the voltage regulating component 10 of the photovoltaic inverter is relatively large. Figure 1 In the example, the first circuit board 20 is disposed on the same side of the heat sink 60 and the voltage regulating component 10 .

[0081] Preferably, the electronic components on the first circuit board 20 are arranged from large to small according to the heat generation and from small to large according to the distance from the heat sink 60 on the first circuit board 20 .

[0082] Preferably, the first circuit board 20 is made of an aluminum substrate or a ceramic substrate. Therefore, the aluminum substrate and the ceramic substrate have good thermal conductivity, so that the first circuit board 20 can better conduct the heat generated by the electronic components and improve the heat dissipation efficiency of the heat sink 60 to the first circuit board 20.

[0083] In some specific embodiments, the first circuit board 20 and the electrical connector 30 are located on the low voltage side of the voltage regulating assembly 10. It is understood that the voltage regulating assembly 10 has a low voltage side and a high voltage side opposite to each other.

[0084] Therefore, locating the first circuit board 20 and the electrical connector 30 on the low-voltage side of the voltage regulating component 10 can reduce or avoid the risk of high-voltage breakdown on the first circuit board 20 or the electrical connector 30, thereby maintaining the conductive stability of the first circuit board 20 and the electrical connector 30.

[0085] In addition, when the power conversion device 100 also includes a heat sink 60, the heat sink 60 is arranged on the low-voltage side of the voltage regulating component 10, which can reduce or avoid the risk of high-voltage breakdown of the internal circuit structure of the heat sink 60 and maintain the working stability of the heat sink 60.

[0086] In some specific embodiments, Figure 2 As shown, the voltage regulating assembly 10 , the heat sink 60 , the first circuit board 20 , the electrical connector 30 and the insulating member 50 are all disposed in a housing 70 .

[0087] Other structures and operations of the power conversion device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A power conversion device, characterized in that: include: Voltage regulation components; a first circuit board, wherein the first circuit board is spaced apart from the voltage regulating component; an electrical connector, the electrical connector having a first connecting portion and a second connecting portion, the first connecting portion being connected to the voltage regulating assembly, and the second connecting portion being connected to the first circuit board to support the first circuit board; Wherein, the electrical connector is a rigid member, and the first connecting portion and / or the second connecting portion are integrally formed on the electrical connector.

2. The power conversion device according to claim 1, characterized in that: The electrical connector includes a main body portion, the main body portion is in a plate shape, and the first connecting portion and the second connecting portion are formed at two ends of the main body portion in a length direction.

3. The power conversion device according to claim 2, characterized in that: The second connecting portion is a first supporting column, the first supporting column is provided with a connecting thread at one end away from the main body, and the power conversion device further comprises a crimping nut assembled at the connecting thread; At least a portion of the first supporting column is a conductive portion, and the main body and the first circuit board are electrically connected via the conductive portion.

4. The power conversion device according to claim 1, characterized in that: It also includes an insulating member, the insulating member is arranged on the surface of the voltage regulating assembly, and the electrical connector is placed on the insulating member at least at the first connecting portion; The first connection portion passes through the insulating member and extends into the voltage regulating component, or an outlet end of the voltage regulating component passes through the insulating member and is connected to the first connection portion.

5. The power conversion device according to claim 4, characterized in that: The first connection portion is a welding hole, and the output terminal of the voltage regulating component is welded and connected to the welding hole.

6. The power conversion device according to claim 4, characterized in that: The insulating member is an insulating cover or an insulating film, and the insulating member is arranged between the voltage regulating component and the electrical connecting member, and the first circuit board is arranged on a side of the electrical connecting member away from the voltage regulating component; The orthographic projections of the first circuit board and the electrical connector on the voltage regulating component at least partially overlap.

7. The power conversion device according to claim 1, characterized in that: It also includes a support member, the first circuit board is connected to the voltage regulating component through the support member, and the support member is an insulating member.

8. The power conversion device according to claim 1, characterized in that: The electrical connection member is a second circuit board or a metal strip.

9. The power conversion device according to any one of claims 1 to 8, characterized in that: Also includes: A heat sink is arranged on one side of the voltage regulating component, the first circuit board is arranged on the same side of the heat sink and the voltage regulating component, and the orthographic projections of the heat sink and the voltage regulating component on the first circuit board at least partially do not overlap.

10. The power conversion device according to any one of claims 1 to 8, characterized in that: The first circuit board and the electrical connector are located on the low voltage side of the voltage regulating assembly.

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