Power converter structure, installation tool and power converter assembly method

Abstract

The invention relates to the technical field of electronic equipment, and discloses a power converter structure, a mounting tool and a power converter assembly method.The power converter structure comprises a shell which comprises a base, a first shell and a second shell; a circuit board; the power assemblies are arranged on the mounting surface of the second shell, each power assembly comprises a field-effect tube and a diode, each field-effect tube comprises a first single tube and a first pin, each first single tube is connected with the circuit board through the corresponding first pin, each diode comprises a second single tube and a second pin, and each second single tube is connected with the circuit board through the corresponding second pin. As the second shell protruding out of the upper surface is arranged on the base, the distance between the power device single tube and the circuit board can be shortened, and the power device single tube can be conveniently connected with the circuit board through the pins. Therefore, a power device module packaged by a semiconductor manufacturer does not need to be adopted, a plurality of power components are directly used as the power unit to assemble the power converter, and the cost of the power converter is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a power converter structure, an installation tool, and a power converter assembly method. Background Art

[0002] A power converter is an electronic device whose core function is to convert one type of current into another. It has many application scenarios, such as automotive motor controllers, DC / DC converters for fuel cells, and transformers for power system transmission.

[0003] Taking automotive converters as an example, in the prior art, power device modules packaged by semiconductor manufacturers are usually directly used as power units to assemble power converters. However, the cost of power device modules packaged by semiconductor manufacturers is relatively high, resulting in a high cost for the final assembled power converter.

[0004] Therefore, how to reduce the cost of the power converter while ensuring the performance of the power converter has become a technical problem that needs to be solved urgently in this field. Summary of the Invention

[0005] The purpose of the present invention is to at least solve the technical problem of how to reduce the cost of a power converter while ensuring the performance of the power converter. This purpose is achieved through the following technical solutions:

[0006] In the first aspect, the present invention proposes a power converter structure, including: a shell, including a base, the base having an upper surface, the shell also including a first shell and a second shell respectively protruding from the upper surface, the first shell and the second shell are arranged along a first direction; a circuit board, the circuit board and the base are spaced apart along a second direction, the circuit board is fixedly connected to the first shell, and the second direction is perpendicular to the first direction; and a plurality of power components, along the second direction, the side of the second shell facing away from the base is a mounting surface, and a plurality of power components are arranged on the mounting surface; the plurality of power components are spaced apart along a third direction, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the first direction; each power component includes a field effect tube and a diode spaced apart along the third direction, each field effect tube includes a first single tube and a first pin, each first single tube is connected to the circuit board through the first pin, each diode includes a second single tube and a second pin, and each second single tube is connected to the circuit board through the second pin.

[0007] This power converter structure, because a second shell protruding from the upper surface is provided on the base, and along the second direction, the side of the second shell facing away from the base is the mounting surface of the power component, can achieve the goal of reducing the distance between the power device single tube (including the first single tube and the second single tube) and the circuit board in the second direction, thereby facilitating the connection of the power device single tube to the circuit board via the pins (including the first pin and the second pin). Therefore, this power converter structure does not need to use the power device module packaged by the semiconductor manufacturer, and can directly assemble the power converter using multiple power components as power units. While ensuring the performance of the power converter, it also reduces the cost of the power converter.

[0008] In some embodiments of the present invention, along the second direction, there is a first preset interval between the first single tube and the circuit board, and there is a first preset interval between the second single tube and the circuit board.

[0009] In some embodiments of the present invention, a plurality of mounting holes are provided on the circuit board, each first pin is fixedly connected to a mounting hole, and each second pin is fixedly connected to a mounting hole.

[0010] In some embodiments of the present invention, in each field effect transistor: the first pin includes a first horizontal portion, a first bent portion and a first vertical portion, the first horizontal portion extends along the first direction, the first horizontal portion is connected to the first vertical portion through the first bent portion, and the end of the first vertical portion away from the first bent portion is connected to a mounting hole; in each diode: the second pin includes a second horizontal portion, a second bent portion and a second vertical portion, the second horizontal portion extends along the first direction, the second horizontal portion is connected to the second vertical portion through the second bent portion, and the end of the second vertical portion away from the second bent portion is connected to a mounting hole; the angle between the first vertical portion and the first horizontal portion satisfies: α=90°±z; the angle between the second vertical portion and the second horizontal portion satisfies: β=90°±z; in the above two formulas, α is the angle between the first vertical portion and the first horizontal portion, β is the angle between the second vertical portion and the second horizontal portion, and z is a preset angle value, and the value range of z is 3°-6°

[0011] In some embodiments of the present invention, in each field effect tube: the first single tube has a first positioning hole, and along the first direction, the distance between the end of the first vertical portion facing away from the first bent portion and the first positioning hole is a first preset distance; the first bent portion is arc-shaped, and the arc radius of the first bent portion is the first preset radius; in each diode: the second single tube has a second positioning hole, and along the first direction, the distance between the end of the second vertical portion facing away from the second bent portion and the second positioning hole is a second preset distance; the second bent portion is arc-shaped, and the arc radius of the second bent portion is the second preset radius.

[0012] In some embodiments of the present invention, an insulating medium is provided between the power component and the mounting surface along the second direction.

[0013] In the second aspect, the present invention proposes an installation tool for assembling any of the above-mentioned power converter structures, the installation tool comprising: a base having a positioning surface extending along a third direction; a plurality of positioning members, each first single tube is arranged corresponding to a positioning member, and each second single tube is arranged corresponding to a positioning member, the first single tube is configured to be able to be connected to the positioning surface through the positioning member, and the second single tube is configured to be able to be connected to the positioning surface through the positioning member; and spacer studs, arranged on the positioning surface, the spacer studs extend along the second direction, and the spacer studs are used for detachable connection with the circuit board.

[0014] In some embodiments of the present invention, the positioning surface has a plurality of positioning portions arranged along the third direction, each first single tube is correspondingly engaged with a positioning portion, and each second single tube is correspondingly engaged with a positioning portion.

[0015] In a third aspect, the present invention proposes a power converter assembly method, which is applicable to any of the above-mentioned installation tools. The power converter assembly method includes: step S100: installing multiple power components on a positioning surface at intervals along a third direction through multiple positioning members; step S200: connecting the circuit board to the spacing studs, connecting each first single tube to the circuit board through the corresponding first pin, and connecting each second single tube to the circuit board through the corresponding second pin; step S300: releasing the connection between the spacing studs and the circuit board, and releasing the connection between the positioning surface and the multiple power components, and then removing the installation tool; step S400: fixing one end of the circuit board to the first shell, and installing the multiple power components on the mounting surface.

[0016] In some embodiments of the present invention, the positioning surface has multiple positioning portions arranged along a third direction, and step S100 specifically includes: step S101: arranging multiple power components on the positioning surface along the third direction at intervals, and clamping each first single tube with a positioning portion, and clamping each second single tube with a positioning portion; step S102: connecting each first single tube to the positioning surface through a positioning member, and connecting each second single tube to the positioning surface through a positioning member.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0019] Figure 1 A cross-sectional view of a power converter structure provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the arrangement relationship of multiple power components in a power converter structure provided by an embodiment of the present invention;

[0021] Figure 3 A schematic structural diagram of a field effect transistor in a power converter structure provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a diode in a power converter structure provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of a portion of the structure of the installation tool provided by an embodiment of the present invention when installing a power component;

[0024] Figure 6 This is a flow chart of a power converter assembly method provided by an embodiment of the present invention.

[0025] The reference numerals are as follows:

[0026] 1. Power converter structure;

[0027] 10. Housing; 101. Base; 1011. Upper surface; 102. First housing; 103. Second housing; 1031. Upper portion; 10311. Mounting surface; 1032. Lower portion;

[0028] 20. Circuit board;

[0029] 30. Power component; 301. Field-effect transistor; 3011. First single transistor; 30111. First positioning hole; 3012. First pin; 30121. First horizontal portion; 30122. First bent portion; 30123. First vertical portion; 302. Diode; 3021. Second single transistor; 30211. Second positioning hole; 3022. Second pin; 30221. Second horizontal portion; 30222. Second bent portion; 30223. Second vertical portion;

[0030] 2. Install tooling;

[0031] 40. base; 41. positioning surface; 411. positioning portion;

[0032] 50. Positioning parts;

[0033] 60. Spacer studs;

[0034] α, the angle between the first vertical portion and the first horizontal portion; β, the angle between the second vertical portion and the second horizontal portion;

[0035] z, preset angle value;

[0036] C1, first preset interval; C2, second preset interval;

[0037] G1, first preset distance; G2, second preset distance;

[0038] E1, first preset radius; E2, second preset radius;

[0039] X, first spacing; Y, second spacing; a, third spacing; b, fourth spacing. DETAILED DESCRIPTION

[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0042] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0043] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0044] Figure 1 A cross-sectional view of a power converter structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the arrangement relationship of multiple power components in a power converter structure provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a field effect transistor in a power converter structure provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a diode in a power converter structure provided by an embodiment of the present invention; Figures 1 to 4 , an embodiment of the present invention provides a power converter structure 1, comprising:

[0045] The housing 10 includes a base 101 having an upper surface 1011 , and further includes a first shell 102 and a second shell 103 respectively protruding from the upper surface 1011 , wherein the first shell 102 and the second shell 103 are arranged along a first direction;

[0046] The circuit board 20 is spaced apart from the base 101 along the second direction, the circuit board 20 is fixedly connected to the first shell 102, and the second direction is perpendicular to the first direction; and

[0047] Multiple power components 30, along the second direction, a side of the second shell 103 facing away from the base 101 is a mounting surface 10311, and the multiple power components 30 are arranged on the mounting surface 10311; the multiple power components 30 are arranged at intervals along the third direction, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the first direction; each power component 30 includes a field effect transistor 301 and a diode 302 arranged at intervals along the third direction, each field effect transistor 301 includes a first single tube 3011 and a first pin 3012, each first single tube 3011 is connected to the circuit board 20 via the first pin 3012, each diode 302 includes a second single tube 3021 and a second pin 3022, each second single tube 3021 is connected to the circuit board 20 via the second pin 3022.

[0048] In this embodiment, since a second shell 103 protruding from the upper surface 1011 is provided on the base 101, and along the second direction, the side of the second shell 103 facing away from the base 101 is the mounting surface 10311 of the power component 30, it is possible to reduce the distance between the power device single tube (including the first single tube 3011 and the second single tube 3021) and the circuit board 20 in the second direction, thereby facilitating the connection of the power device single tube with the circuit board 20 through the pins (including the first pin 3012 and the second pin 3022).

[0049] Therefore, this power converter structure 1 does not need to use power device modules packaged by semiconductor manufacturers. The power converter structure 1 can be directly assembled using multiple power components 30 as power units. While ensuring the performance of the power converter structure 1, the cost of the power converter structure 1 is also reduced.

[0050] Among them, the field effect transistor 301 is a metal-oxide semiconductor field effect transistor (MOSFET), commonly known as a MOS transistor; the material of the diode 302 can be silicon carbide, that is, the diode 302 is a silicon carbide diode (SiC-DIODE); similarly, the field effect transistor 301 can be a silicon carbide field effect transistor (SiC-MOSFET); it is easy to understand that the materials of the above-mentioned field effect transistor 301 and diode 302 are only examples and are not specifically limited. It is sufficient to reduce the cost as much as possible while being able to achieve the basic functions of the power converter structure 1, and the specific material can be determined according to actual needs.

[0051] It is easy to understand that each power device may be provided with multiple pins.

[0052] In addition, the circuit board 20 can be a printed circuit board (PCB).

[0053] In addition, it is easy to understand that in order to ensure the overall heat dissipation effect of the power converter structure 1, the power component 30 needs to be installed in the cooling area of the shell 10; therefore, the second shell 103 may include an upper part 1031 and a lower part 1032 arranged along the second direction, and the mounting surface 10311 is located on the side of the upper part 1031 away from the lower part 1032, and a water channel can be set in the inner cavity of the lower part 1032 to flow the cooling liquid, thereby facilitating the formation of the cooling area.

[0054] like Figure 1 As shown, according to an optional embodiment of the present invention, along the second direction, there is a first preset interval C1 between the first single tube 3011 and the circuit board 20 , and there is a first preset interval C1 between the second single tube 3021 and the circuit board 20 .

[0055] In this embodiment, in order to ensure that the power component 30 can have good thermal contact with the housing 10, the distance between the first single tube 3011 and the second single tube 3021 relative to the circuit board 20 must have a strict tolerance. The purpose of setting the first preset interval C1 is to prevent the power device single tube (i.e., the first single tube 3011 and the second single tube 3021) from directly contacting the circuit board 20.

[0056] Among them, when the thickness of the first single tube 3011 and the second single tube 3021 (i.e., the size in the second direction) is confirmed, the above-mentioned tolerance can also be controlled by controlling the second preset interval C2 (i.e., the distance between the mounting surface 10311 and the circuit board 20 along the second direction).

[0057] In addition, it is easy to understand that the mounting surface 10311 can be a plane parallel to the first direction. When the thickness of the first single tube 3011 and the second single tube 3021 are the same, the upper surface 1011 of the first single tube 3011 and the upper surface 1011 of the second single tube 3021 can be in the same plane, so as to unify the range of the first preset interval C1.

[0058] According to an optional embodiment of the present invention, the circuit board 20 has a plurality of mounting holes (not shown in the figure), each first pin 3012 is fixedly connected to a mounting hole, and each second pin 3022 is fixedly connected to a mounting hole.

[0059] In this embodiment, both the first pin 3012 and the second pin 3022 can be connected to the mounting hole by welding.

[0060] refer to Figure 3 and Figure 4According to an optional embodiment of the present invention, in each field effect transistor 301: the first pin 3012 includes a first horizontal portion 30121, a first bent portion 30122, and a first vertical portion 30123. The first horizontal portion 30121 extends along a first direction. The first horizontal portion 30121 is connected to the first vertical portion 30123 via the first bent portion 30122. An end of the first vertical portion 30123 facing away from the first bent portion 30122 is connected to a mounting hole.

[0061] In each diode 302 , the second pin 3022 includes a second horizontal portion 30221 , a second bent portion 30222 , and a second vertical portion 30223 . The second horizontal portion 30221 extends along the first direction and is connected to the second vertical portion 30223 via the second bent portion 30222 . An end of the second vertical portion 30223 facing away from the second bent portion 30222 is connected to a mounting hole.

[0062] The angle between the first vertical portion 30123 and the first horizontal portion 30121 satisfies: α = 90° ± z;

[0063] The angle between the second vertical portion 30223 and the second horizontal portion 30221 satisfies: β = 90° ± z;

[0064] Wherein, α is the angle between the first vertical portion 30123 and the first horizontal portion 30121, β is the angle between the second vertical portion 30223 and the second horizontal portion 30221, and z is a preset angle value z, which ranges from 3° to 6°.

[0065] In this embodiment, taking into account factors such as heat dissipation efficiency and quality control of power device transistors, in order to minimize the impact of the pins (i.e., first pin 3012 or second pin 3022) extending from the power device transistors (i.e., first transistor 3011 or second transistor 3021) on the overall performance of the power converter structure 1, it is readily understood that the shape of the pins after extension has certain requirements. Taking the first pin 3012 as an example, it is readily apparent from the relative positions of the power device transistors and the circuit board 20 that a right angle between the first vertical portion 30123 and the first horizontal portion 30121 is most likely to ensure consistency in the pin bending angle and to ensure stability in the connection between the first transistor 3011 and the circuit board 20 via the first pin 3012. This embodiment also takes into account possible angular errors during actual assembly. When the difference between the angle between the first vertical portion 30123 and the first horizontal portion 30121 and the right angle (i.e., 90°) is within the range of a predetermined angle value z, the performance of the power converter structure 1 can be well maintained. The setting principle of the second pin 3022 is the same as that of the first pin 3012 described above, and will not be repeated here.

[0066] Therefore, this configuration of the present embodiment can further ensure the overall performance of the power converter structure 1 while reducing costs.

[0067] like Figures 1 to 4 As shown, according to an optional embodiment of the present invention, in each field effect tube 301: the first single tube 3011 has a first positioning hole 30111, and along the first direction, the distance between the end of the first vertical portion 30123 away from the first bending portion 30122 and the first positioning hole 30111 is a first preset distance G1; the first bending portion 30122 is arc-shaped, and the arc radius of the first bending portion 30122 is a first preset radius E1; in each diode 302: the second single tube 3021 has a second positioning hole 30211, and along the first direction, the distance between the end of the second vertical portion 30223 away from the second bending portion 30222 and the second positioning hole 30211 is a second preset distance G2; the second bending portion 30222 is arc-shaped, and the arc radius of the second bending portion 30222 is a second preset radius E2.

[0068] In this embodiment, first, since the position of each power device tube relative to the housing 10 and the circuit board 20 after assembly is fixed, a first preset distance G1 and a second preset distance G2 are set to ensure assembly efficiency. Combined with the above-mentioned α = 90° ± z and β = 90° ± z scheme, the accuracy of the connection between the pin and the circuit board 20 can be ensured, thereby ensuring the overall performance of the power converter structure 1. It is easy to understand that the first preset distance G1 can be equal to the second preset distance G2 to better ensure the overall consistency of the power converter structure 1.

[0069] Furthermore, similar to the analysis of the pins above, using the first pin 3012 as an example, to ensure the performance of the first single tube 3011, the degree of curvature of the first bent portion 30122 of the first pin 3012 also needs to be considered. Since a portion of the first pin 3012 is still located within the first single tube 3011, it is readily understood that the curvature of the first bent portion 30122 should not be too large to avoid affecting the performance of the first pin 3012. Therefore, this embodiment also controls the first preset radius E1. The specific value below the preset radius should be determined based on actual operating conditions and is not specifically limited. The principle of designing the second bent portion 30222 of the second pin 3022 is similar to the analysis of the first bent portion 30122 of the first pin 3012 above and will not be further elaborated.

[0070] Also, it is easy to understand that since the final pin needs to be connected to the circuit board 20, and the size of the mounting hole on the circuit board 20 is fixed, therefore, taking the cylindrical pin as an example, the diameter of the pin should also be able to adapt to the mounting hole of the circuit board 20.

[0071] Therefore, this embodiment maximizes the overall performance of the power converter structure 1 through multiple considerations and multiple size limitations.

[0072] According to an optional embodiment of the present invention, an insulating medium (not shown in the figure) is provided between the power component 30 and the mounting surface 10311 along the second direction.

[0073] In this embodiment, it is easy to understand that the insulating medium can be selected to have a thin sheet structure so that it can be compressed between the power component 30 and the mounting part; as for the material or type of the insulating medium, there is no specific restriction, as long as it can fully balance the insulation withstand voltage requirements of the power converter structure 1 as a whole and the heat dissipation requirements of the single power device, and the specific requirements can be determined according to actual needs.

[0074] Figure 5 The schematic diagram of the structure of the installation tool provided in the embodiment of the present invention when installing the power component is also provided. Figure 5 An embodiment of the present invention further provides an installation tool 2 for assembling any of the above-mentioned power converter structures 1. The installation tool 2 includes: a base 40 having a positioning surface 41 extending along a third direction; a plurality of positioning members 50, each first single tube 3011 being correspondingly provided with a positioning member 50, and each second single tube 3021 being correspondingly provided with a positioning member 50, the first single tube 3011 being configured to be connected to the positioning surface 41 through the positioning member 50, and the second single tube 3021 being configured to be connected to the positioning surface 41 through the positioning member 50; and a spacer stud 60, which is provided on the positioning surface 41, the spacer stud 60 extending along the second direction, and the spacer stud 60 being used for detachable connection with the circuit board 20.

[0075] From the above analysis of the power converter structure 1, it can be seen that during assembly, there are certain requirements for the arrangement of multiple power components 30 and their positions relative to the housing 10 and the circuit board 20. Therefore, to facilitate assembly, this embodiment provides an installation tool 2.

[0076] In this embodiment, during assembly, the multiple power components 30 can be first fixed to the positioning surface 41 of the base 40 by means of multiple positioning members 50 to ensure that the multiple power components 30 can be arranged at intervals along the third direction, and the spacing studs 60 are connected to the circuit board 20 to control the distance between the circuit board 20 and the power components 30 in the second direction (i.e., to meet the setting of the first preset interval C1). Then, all connections between the multiple power components 30 and the installation tooling 2 are released, and the connection between the circuit board 20 and the spacing studs 60 is released. After removing the installation tooling 2, one end of the circuit board 20 is fixedly connected to the first shell 102, and the multiple power components 30 are assembled to the mounting surface 10311 of the second shell 103, thereby completing the assembly of the power converter structure 1.

[0077] Therefore, this installation tool 2 can facilitate the positioning of multiple power components 30, improve the accuracy of assembly between the power device single tube and the circuit board 20, and thus improve the overall assembly efficiency of the power converter structure 1.

[0078] Among them, the positioning member 50 can be a bolt, the first positioning hole 30111 can be a first threaded hole, and the bolt can pass through the first threaded hole to fix the first single tube 3011 to the positioning surface 41; the fixing method of the second single tube 3021 is the same as that of the first single tube 3011, and will not be repeated.

[0079] In addition, it is easy to understand that the length of the spacing stud 60 in the second direction and the height of the second shell 103 in the second direction can both be determined based on the above-mentioned second preset interval C2, and must meet the following requirements: when the circuit board 20 is connected to the spacing stud 60, the distance between the circuit board 20 and the positioning surface 41 is the second preset interval C2, and when the installation tool 2 is removed and multiple power components 30 are assembled to the mounting surface 10311, it can also be ensured that along the second direction, the distance between the mounting surface 10311 and the circuit board 20 is the second preset interval C2, so as to meet the tolerance requirements, thereby ensuring that the power component 30 can have good thermal contact with the shell 10.

[0080] Then, there can be multiple spacing studs 60 , and one spacing stud 60 can be set between each power component 30 to improve the accuracy and stability of positioning between the circuit board 20 and the installation tool 2 .

[0081] Also, for the specific arrangement of the multiple power components 30, please refer to Figure 1 In a power component, the distance between the first positioning hole 30111 and the nearest spacing stud 60 is the third spacing a, and the distance between the first positioning hole 30111 and the second positioning hole 30211 is the fourth spacing b. Two adjacent power components 30 can also be regarded as a group (for the convenience of description, the two adjacent power components 30 will be referred to as components in the same group below), and each power component 30 is correspondingly provided with a spacing stud 60; in a component in the same group, the distance between two adjacent spacing studs 60 is the first spacing X; in two adjacent components in the same group, the distance between two corresponding different components in the same group and the nearest spacing studs 60 is the second spacing Y. In the actual assembly of multiple power components 30, all the above-mentioned first spacing X sizes can be the same, all the second spacing Y sizes can be the same, all the third spacing a sizes can be the same, and all the fourth spacing b sizes can be the same, so as to further improve the consistency of the overall assembly of the power converter structure 1.

[0082] Continue to refer Figure 5According to an optional embodiment of the present invention, the positioning surface 41 has a plurality of positioning portions 411 arranged along the third direction, each first single tube 3011 is correspondingly engaged with a positioning portion 411, and each second single tube 3021 is correspondingly engaged with a positioning portion 411.

[0083] In this embodiment, it is easy to understand that the positioning portion 411 can be a groove. The groove is simple to set up, easy to snap into, and has a good positioning effect.

[0084] Figure 6 Flowchart of the power converter assembly method provided by the embodiment of the present invention, and reference is made to Figures 1 to 6 The embodiment of the present invention further provides a power converter assembly method, which is applicable to any of the above-mentioned installation tools 2. The power converter assembly method includes:

[0085] Step S100: installing a plurality of power components 30 on the positioning surface 41 along the third direction at intervals using a plurality of positioning members 50;

[0086] Step S200: Connect the circuit board 20 to the spacer studs 60, connect each first single tube 3011 to the circuit board 20 via the corresponding first pin 3012, and connect each second single tube 3021 to the circuit board 20 via the corresponding second pin 3022;

[0087] Step S300: releasing the connection between the spacer studs 60 and the circuit board 20, and releasing the connection between the positioning surface 41 and the plurality of power components 30, and then removing the installation tool 2;

[0088] Step S400 : fixedly connecting one end of the circuit board 20 to the first shell 102 , and installing a plurality of power components 30 on the mounting surface 10311 .

[0089] In this embodiment, the power converter assembly method is described in detail below in combination with all the above solutions.

[0090] Regarding step S100, when the positioning surface 41 has a plurality of positioning portions 411 arranged along the third direction, step S100 specifically includes:

[0091] Step S101: Arrange multiple power components 30 at intervals on the positioning surface 41 along the third direction, and engage each first single tube 3011 with a positioning portion 411, and engage each second single tube 3021 with a positioning portion 411;

[0092] Step S102: Each first single tube 3011 is connected to the positioning surface 41 via a positioning member 50, and each second single tube 3021 is connected to the positioning surface 41 via a positioning member 50. As previously described, the positioning member 50 can be a bolt, the first positioning hole 30111 can be a first threaded hole, and the second positioning hole 30211 can be a second threaded hole. The specific assembly process is not further described here.

[0093] In step S200, taking the assembly of a first single tube 3011 as an example, the end of the first vertical portion 30123 of the first pin 3012, facing away from the first bent portion 30122, can be soldered to a mounting hole on the circuit board 20. Since the cut pins tend to have sharp edges and are difficult to insert into the mounting holes, during assembly, the first vertical portion 30123 should be inserted into the corresponding mounting hole before the first pins 3012 are cut. All first single tubes 3011 are assembled using this method. The assembly method for the second single tube 3021 is similar to that for the first single tube 3011 and will not be repeated here.

[0094] In addition, a mounting shell may be provided to simulate the structure of the first shell 102 during final assembly, and one end of the circuit board 20 may be connected to the mounting shell to improve the stability of the circuit board 20 .

[0095] For step S300, it should be noted that in order to facilitate the release of the connection between the power component 30 and the installation tool 2, the positive projection of the circuit board 20 on the positioning surface 41 along the second direction should not interfere with the first positioning hole 30111 and the second positioning hole 30211, that is, there should be enough space above the positioning surface 41 to facilitate the installation and removal of the positioning part 50 (such as a bolt).

[0096] In addition, it is easy to understand that, under the premise of providing a mounting shell, when releasing the connection between the circuit board 20 and the spacer studs 60 , the connection between the circuit board 20 and the mounting shell also needs to be released.

[0097] For step S400, it is easy to understand that when multiple power components 30 are installed on the mounting surface 10311, the above two formulas must be satisfied, namely α = 90° ± z, and β = 90° ± z; in addition, the first preset radius E1 of the first bending portion 30122, the second preset radius E2 of the second bending portion 30222, the first preset interval C1, the first preset distance G1 and the second preset distance G2 must also be satisfied to ensure the overall performance of the power converter structure 1.

[0098] In addition, when one end of the circuit board 20 needs to be connected to the first shell 102 , the connection between the two can be achieved by screw connection.

[0099] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A power converter structure, characterized in that: include: A housing (10) comprises a base (101), wherein the base (101) has an upper surface (1011), and the housing (10) further comprises a first shell (102) and a second shell (103) respectively protruding from the upper surface (1011), wherein the first shell (102) and the second shell (103) are arranged along a first direction; a circuit board (20), the circuit board (20) and the base (101) are spaced apart along a second direction, the circuit board (20) is fixedly connected to the first shell (102), and the second direction is perpendicular to the first direction; and A plurality of power components (30); along the second direction, a surface of the second shell (103) facing away from the base (101) is a mounting surface (10311); the plurality of power components (30) are arranged at intervals along a third direction, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the first direction; each of the power components (30) comprises a field effect transistor (301) and a diode (302) arranged at intervals along the third direction, each of the field effect transistors (301) comprises a first single transistor (3011) and a first pin (3012), each of the first single transistors (3011) is connected to the circuit board (20) via the first pin (3012), each of the diodes (302) comprises a second single transistor (3021) and a second pin (3022), each of the second single transistors (3021) is connected to the circuit board (20) via the second pin (3022).

2. The power converter structure according to claim 1, characterized in that: Along the second direction, there is a first preset interval (C1) between the first single tube (3011) and the circuit board (20), and there is a first preset interval (C1) between the second single tube (3021) and the circuit board (20).

3. The power converter structure according to claim 1, characterized in that: The circuit board (20) has a plurality of mounting holes, each of the first pins (3012) is fixedly connected to one of the mounting holes, and each of the second pins (3022) is fixedly connected to one of the mounting holes.

4. The power converter structure according to claim 3, characterized in that: In each field effect transistor (301), the first pin (3012) comprises a first horizontal portion (30121), a first bent portion (30122), and a first vertical portion (30123); the first horizontal portion (30121) extends along the first direction; the first horizontal portion (30121) is connected to the first vertical portion (30123) via the first bent portion (30122); and one end of the first vertical portion (30123) facing away from the first bent portion (30122) is connected to one of the mounting holes; In each diode (302), the second pin (3022) comprises a second horizontal portion (30221), a second bent portion (30222), and a second vertical portion (30223); the second horizontal portion (30221) extends along the first direction; the second horizontal portion (30221) is connected to the second vertical portion (30223) via the second bent portion (30222); and one end of the second vertical portion (30223) facing away from the second bent portion (30222) is connected to one of the mounting holes; The angle between the first vertical portion (30123) and the first horizontal portion (30121) satisfies: α＝90°±z； The angle between the second vertical portion (30223) and the second horizontal portion (30221) satisfies: β＝90°±z； Wherein, α is the angle between the first vertical portion (30123) and the first horizontal portion (30121), β is the angle between the second vertical portion (30223) and the second horizontal portion (30221), and z is a preset angle value, and the value range of z is 3°-6°.

5. The power converter structure according to claim 4, characterized in that: In each field effect tube (301), the first single tube (3011) has a first positioning hole (30111); along the first direction, the distance between the end of the first vertical portion (30123) facing away from the first bent portion (30122) and the first positioning hole (30111) is a first preset distance (G1); the first bent portion (30122) is arc-shaped, and the arc radius of the first bent portion (30122) is a first preset radius (E1); In each of the diodes (302), the second single tube (3021) has a second positioning hole (30211); along the first direction, the distance between the end of the second vertical portion (30223) facing away from the second bent portion (30222) and the second positioning hole (30211) is a second preset distance (G2); the second bent portion (30222) is arc-shaped, and the arc radius of the second bent portion (30222) is a second preset radius (E2).

6. The power converter structure according to any one of claims 1 to 5, characterized in that: Along the second direction, an insulating medium is provided between the power component (30) and the mounting surface (10311).

7. An installation tool, characterized in that: For assembling the power converter structure (1) according to any one of claims 1 to 6, the installation tool (2) comprises: A base (40) having a positioning surface (41) extending along the third direction; a plurality of positioning members (50), each of the first single tubes (3011) being provided in correspondence with one of the positioning members (50), each of the second single tubes (3021) being provided in correspondence with one of the positioning members (50), the first single tube (3011) being configured to be connected to the positioning surface (41) via the positioning member (50), and the second single tube (3021) being configured to be connected to the positioning surface (41) via the positioning member (50); and A spacing stud (60) is provided on the positioning surface (41), the spacing stud (60) extends along the second direction, and the spacing stud (60) is used for detachable connection with the circuit board (20).

8. The installation tool according to claim 7, characterized in that: The positioning surface (41) has a plurality of positioning portions (411) arranged along the third direction; each of the first single tubes (3011) is correspondingly engaged with one of the positioning portions (411); and each of the second single tubes (3021) is correspondingly engaged with one of the positioning portions (411).

9. A method for assembling a power converter, characterized in that: The power converter assembly method is applicable to the installation tool (2) according to claim 7 or 8, and the power converter assembly method comprises: Step S100: installing a plurality of the power components (30) on the positioning surface (41) at intervals along the third direction using a plurality of the positioning members (50); Step S200: connecting the circuit board (20) to the spacer studs (60), connecting each of the first single tubes (3011) to the circuit board (20) via the corresponding first pin (3012), and connecting each of the second single tubes (3021) to the circuit board (20) via the corresponding second pin (3022); Step S300: releasing the connection between the spacer stud (60) and the circuit board (20), and releasing the connection between the positioning surface (41) and the plurality of power components (30), and then removing the installation tool (2); Step S400: fixedly connecting one end of the circuit board (20) to the first shell (102), and installing a plurality of the power components (30) on the mounting surface (10311).

10. The power converter assembly method according to claim 9, characterized in that: The positioning surface (41) has a plurality of positioning portions (411) arranged along the third direction, and the step S100 specifically includes: Step S101: arranging a plurality of the power components (30) at intervals on the positioning surface (41) along the third direction, and causing each of the first single tubes (3011) to be clamped with one of the positioning portions (411), and causing each of the second single tubes (3021) to be clamped with one of the positioning portions (411); Step S102: Connect each of the first single tubes (3011) to the positioning surface (41) through one of the positioning members (50), and connect each of the second single tubes (3021) to the positioning surface (41) through one of the positioning members (50).

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