Inverter and connection terminal

Abstract

The invention provides an inverter and a connecting terminal, the inverter comprises a shell, a circuit board and the connecting terminal, the shell is provided with a first through hole, the circuit board is provided with a second through hole, the second through hole and the first through hole are oppositely arranged, the connecting terminal comprises a first main body, a second main body and a connecting piece, the first main body comprises a shell, a limiting part and a conductive core, the shell penetrates through the first through hole and comprises a peripheral side face and a first end face which are connected, the first end face is provided with a first opening, the limiting part is arranged on the peripheral side face in a protruding mode, the conductive core is exposed out of the first opening, and the conductive core makes contact with the circuit board; the end, away from the clamping part, of the mounting part penetrates through the second through hole and the first opening to be connected with the conductive core, the circuit board is located between the clamping part and the conductive core, the connecting piece is connected to the peripheral side face, and the side plate is located between the connecting piece and the limiting part. According to the technical scheme, the assembling process of electric connection between the connecting terminal and the circuit board can be simplified, and the assembling efficiency of the inverter is improved.

Description

Technical Field

[0001] The present application relates to the field of terminal structures, and in particular to an inverter and a connecting terminal. Background Art

[0002] The inverter is a conversion device that can convert DC voltage into AC power at the mains frequency. The input terminals or output terminals of the current inverter are generally electrically connected to the circuit board inside the inverter through cables. Since the number of cables generally needs to match the number of terminals, when the number of terminals is large, the number of cables will also be large, resulting in a long assembly time for achieving electrical connection between the terminals and the circuit board, and a more complicated assembly process. Summary of the invention

[0003] The embodiments of the present application provide an inverter and a connecting terminal, which can simplify the assembly process of realizing the electrical connection between the connecting terminal and the circuit board and improve the assembly efficiency of the inverter.

[0004] In a first aspect, the present application provides an inverter, comprising:

[0005] A housing, the housing comprising a side plate, the side plate being provided with a first through hole;

[0006] A circuit board, the circuit board is located inside the housing and arranged opposite to the side plate, the circuit board is provided with a second through hole, and the second through hole is arranged opposite to the first through hole; and

[0007] A connecting terminal, the axial direction of which is perpendicular to the side plate and the circuit board, and the connecting terminal comprises:

[0008] A first body, the first body comprising a shell, a limiting portion and a conductive core, one end of the shell being located outside the shell, the shell passing through the first through hole, the other end of the shell being located inside the shell, the shell comprising a peripheral side surface and a first end surface connected to each other, the first end surface being provided with a first opening, the limiting portion being located outside the shell and protruding from the peripheral side surface, at least part of the conductive core being located inside the shell, the first opening exposing the conductive core, and the conductive core being in contact with the circuit board;

[0009] a second body located inside the housing, the second body comprising a mounting portion and a clamping portion, the clamping portion being disposed at one end of the mounting portion, an end of the mounting portion away from the clamping portion passing through the second through hole and the first opening to connect with the conductive core, a first clamping space being formed between the clamping portion and the conductive core, and the circuit board being located in the first clamping space; and

[0010] A connecting piece is located inside the shell, the connecting piece is connected to the peripheral side surface, a second clamping space is formed between the connecting piece and the limiting portion, and the side plate is located in the second clamping space.

[0011] It is understandable that by designing the structure of the connecting terminal, the connecting terminal has a first clamping space that can fix the circuit board, so that the conductive core of the connecting terminal can be directly electrically connected to the circuit board. And the connecting terminal has a second clamping space that can fix the housing of the inverter, so that the connecting terminal can be fixed to the housing. Since the connecting terminal can directly realize the electrical connection with the circuit board, the cables connecting the terminal and the circuit board in the prior art can be reduced, thereby reducing the manufacturing time of the inverter, simplifying the assembly process of realizing the electrical connection between the connecting terminal and the circuit board, and improving the assembly efficiency of the inverter. In addition, the connecting terminal is easy to disassemble and assemble, which is convenient for maintenance.

[0012] In addition, since the connection terminal of the present application can reduce the number of cables, when the connection terminal is used in the inverter, the installation space originally used to install the cables in the inverter can be used to install other electronic devices, functional modules, and structural parts of the inverter. Therefore, without increasing the volume of the inverter, the arrangement density of the internal components of the inverter can be increased, thereby improving the performance of the inverter.

[0013] In a possible implementation manner, the housing has a cavity, and the cavity is communicated with the first opening;

[0014] The conductive core comprises a fixed portion and a first connecting portion connected to each other, and the fixed portion and at least a portion of the first connecting portion are located in the cavity;

[0015] The first connection portion is connected to the mounting portion, and a surface of the first connection portion facing the clamping portion is flush with the first end surface, or the first connection portion protrudes relative to the first end surface.

[0016] It can be understood that, since the end face of the first connection portion facing the clamping portion is flush with the first end face or protrudes relative to the first end face, when the circuit board is connected between the first end face and the clamping portion, the end face of the first connection portion facing the clamping portion can directly abut the circuit board, so that the conductive core can be directly connected to the circuit board. At present, the conductive core and the circuit board generally need to be connected through a wire, but the wire will produce loss during the transmission process and affect the transmission quality of the electrical signal. Therefore, the present application directly connects the conductive core to the circuit board to reduce the transmission loss of the electrical signal, thereby improving the transmission quality of the electrical signal.

[0017] In a possible implementation manner, the clamping portion is capable of rotating around a center line of the mounting portion, and moving relative to the first connecting portion along an axial direction of the connecting terminal to approach or move away from the first connecting portion.

[0018] It can be understood that by rotating the second body, the rotational movement of the second body can be converted into axial movement of the second body to adjust the distance between the clamping part and the first connecting part, thereby adjusting the width of the first clamping space, so that the width of the first clamping space can be adjusted to adapt to the thickness of the circuit board, with strong flexibility.

[0019] In a possible implementation manner, the connecting member can rotate around a center line of the connecting member and move relative to the limiting portion along an axial direction of the connecting terminal to approach or move away from the limiting portion.

[0020] It can be understood that the width of the second clamping space is the distance between the connector and the limiting portion. By rotating the connector, the rotational motion of the connector can be converted into the axial movement of the connector to adjust the distance between the connector and the limiting portion, thereby adjusting the width of the second clamping space, so that the width of the second clamping space can be adjusted to adapt to the thickness of the inverter housing, and has strong flexibility.

[0021] In a possible implementation manner, the connecting piece is threadedly connected to the housing.

[0022] Thus, the connection reliability between the connecting member and the housing can be improved, and the connecting member can be easily removed from the housing. When the connecting member rotates relative to the housing, it can be close to the limiting portion or away from the limiting portion.

[0023] In a possible implementation manner, the first connecting portion includes an abutting section, a first bending section, a second bending section and a locking body;

[0024] The abutting section can abut against the circuit board;

[0025] One end of the first bending section is bent and connected to one end of the abutting section, and the other end of the first bending section is connected to the fixing portion;

[0026] One end of the second bending section is bent and connected to the other end of the abutting section, and the other end of the second bending section is connected to the fixing portion;

[0027] The abutting section, the first bending section and the second bending section cooperate to form an accommodating space;

[0028] The locking body is connected to the abutting section, the locking body is located in the abutting section and the accommodating space, and the mounting portion passes through the locking body.

[0029] It is understandable that the first bending section and the second bending section can support the abutting section, thereby preventing the abutting section from shaking after being connected to the circuit board, and preventing the connection between the connecting terminal and the circuit board from being unstable, which may cause circuit disconnection during operation of the inverter.

[0030] In a possible implementation manner, the abutting section is provided with a receiving hole, and the receiving hole penetrates the abutting section along the thickness direction of the abutting section;

[0031] The locking body comprises a first sub-portion and a second sub-portion connected to each other, the outer diameter of the first sub-portion is larger than the outer diameter of the second sub-portion, the first sub-portion is located in the accommodation space and in contact with the abutment section, and the second sub-portion is located in the accommodation hole;

[0032] The locking body has a connecting hole, and the connecting hole penetrates the first sub-portion and the second sub-portion along the thickness direction of the locking body, and at least a part of the mounting portion is located in the connecting hole.

[0033] It is understandable that since the structure of the abutting section is relatively thin and the structural strength is relatively weak, after the locking body is connected to the abutting section, the structural strength of the abutting section can be strengthened, and the overall structural strength of the first connecting part can be increased. The second body and the conductive core are fixedly connected by connecting the conductive core to the locking body, which is conducive to increasing the connection stability between the second body and the conductive core.

[0034] The second sub-section of the locking body is arranged in the accommodating hole, so that the accommodating hole can limit the second sub-section, so that the locking body and the abutting section have good connection performance. In addition, because the outer diameter of the first sub-section is larger than the outer diameter of the second sub-section, and the outer diameter of the second sub-section is compatible with the hole diameter of the accommodating hole, the first sub-section can only be located outside the abutting section and abut against the abutting section, so the first sub-section can provide support for the abutting section to prevent the structure of the abutting section from being deformed.

[0035] In a possible implementation manner, the locking body and the abutting section are an integrated structure, or the locking body and the abutting section are a separate structure.

[0036] It is understandable that when the locking body and the abutting section are an integrated structure, the overall structural strength of the locking body and the abutting section is relatively high, and the locking body and the abutting section as a whole are not easily deformed during the connection and installation of the second body. When the locking body and the abutting section are a separate structure, the respective structures of the locking body and the abutting section are relatively simple, the processing of the locking body and the abutting section is relatively easy, and the production yield of the locking body and the abutting section is relatively high.

[0037] In a possible implementation manner, the mounting portion is threadedly connected to a hole wall of the connecting hole.

[0038] It is understandable that, since the mounting portion needs to pass through the circuit board and connect with the abutment section, when the circuit board needs to be removed, the second body needs to be separated from the first body, thereby opening the first clamping space. In the present application, the mounting portion is connected to the first connecting portion by a thread, so that the second body can be easily and conveniently removed from the first body, thereby installing or removing the circuit board, simplifying the disassembly process of the second body and the first body.

[0039] In a possible implementation manner, a first groove is formed on the inner wall of the cavity, a first protrusion is formed on the outer surface of the fixing portion, and at least a portion of the first protrusion is located in the first groove.

[0040] It can be understood that the first protrusion is engaged with the first slot, and the first protrusion of the conductive core and the first slot of the shell are mutually limited, so that the conductive core is stably installed in the shell to prevent the conductive core from shaking in the cavity of the shell.

[0041] In a possible implementation manner, a first slot is recessed on the inner wall of the cavity;

[0042] The conductive core further comprises a fixing piece, which is detachably connected to the fixing portion, and part of the fixing piece is located in the first slot.

[0043] It is understandable that, since the structure of the fixing piece is relatively complex, providing the fixing piece as a separate component and preparing it separately can simplify the preparation process of the conductive core, improve the yield rate of the conductive core, and also facilitate the maintenance of the fixing piece.

[0044] In a possible embodiment, the fixing member includes a main body and a clamping body, the main body is clamped to the periphery of the fixing portion along the circumferential direction of the fixing portion, the clamping body includes a first end and a second end, the first end is connected to the main body, there is a gap between the second end and the main body, the second end is close to the first connecting portion relative to the first end, and the second end is abutted against the groove wall of the first clamping groove.

[0045] In a possible implementation manner, a receiving groove is concavely formed on an outer surface of the fixing portion, and at least a portion of the body is located in the receiving groove.

[0046] In a possible implementation manner, a second protrusion is provided on an inner wall of the cavity, and the second protrusion abuts against an end of the fixing portion away from the first connecting portion.

[0047] In a second aspect, the present application provides a connecting terminal, including:

[0048] A first body, the first body comprising a shell, a limiting portion and a conductive core, the shell comprising a peripheral side surface and a first end surface connected to each other, the first end surface being provided with a first opening, the limiting portion being convexly provided on the peripheral side surface, at least part of the conductive core being located inside the shell, and the first opening exposing the conductive core;

[0049] a second body, the second body comprising a mounting portion and a clamping portion, the clamping portion being provided at one end of the mounting portion, an end of the mounting portion away from the clamping portion passing through the first opening and connected to the conductive core, a first clamping space being formed between the clamping portion and the conductive core, the first clamping space being used to fix a circuit board of an inverter; and

[0050] A connecting piece is connected to the peripheral side surface, and a second clamping space is formed between the connecting piece and the limiting portion, and the second clamping space is used to fix the housing of the inverter.

[0051] In a possible implementation manner, the housing has a cavity, and the cavity is communicated with the first opening;

[0052] The conductive core comprises a fixed portion and a first connecting portion connected to each other, and the fixed portion and at least a portion of the first connecting portion are located in the cavity;

[0053] The first connection portion is connected to the mounting portion, and a surface of the first connection portion facing the clamping portion is flush with the first end surface, or the first connection portion protrudes relative to the first end surface.

[0054] It can be understood that, since the end face of the first connection portion facing the clamping portion is flush with the first end face or protrudes relative to the first end face, when the circuit board is connected between the first end face and the clamping portion, the end face of the first connection portion facing the clamping portion can directly abut the circuit board, so that the conductive core can be directly connected to the circuit board. At present, the conductive core and the circuit board generally need to be connected through a wire, but the wire will produce loss during the transmission process and affect the transmission quality of the electrical signal. Therefore, the present application directly connects the conductive core to the circuit board to reduce the transmission loss of the electrical signal, thereby improving the transmission quality of the electrical signal.

[0055] In a possible implementation manner, the clamping portion is capable of rotating around a center line of the mounting portion, and moving relative to the first connecting portion along an axial direction of the connecting terminal to approach or move away from the first connecting portion.

[0056] It can be understood that by rotating the second body, the rotational movement of the second body can be converted into axial movement of the second body to adjust the distance between the clamping part and the first connecting part, thereby adjusting the width of the first clamping space, so that the width of the first clamping space can be adjusted to adapt to the thickness of the circuit board, with strong flexibility.

[0057] In a possible implementation manner, the connecting member can rotate around a center line of the connecting member and move relative to the limiting portion along an axial direction of the connecting terminal to approach or move away from the limiting portion.

[0058] It can be understood that the width of the second clamping space is the distance between the connector and the limiting portion. By rotating the connector, the rotational motion of the connector can be converted into the axial movement of the connector to adjust the distance between the connector and the limiting portion, thereby adjusting the width of the second clamping space, so that the width of the second clamping space can be adjusted to adapt to the thickness of the inverter housing, and has strong flexibility.

[0059] In a possible implementation manner, the first connecting portion includes an abutting section, a first bending section, a second bending section and a locking body;

[0060] The abutting section can abut against the circuit board;

[0061] One end of the first bending section is bent and connected to one end of the abutting section, and the other end of the first bending section is connected to the fixing portion;

[0062] One end of the second bending section is bent and connected to the other end of the abutting section, and the other end of the second bending section is connected to the fixing portion;

[0063] The abutting section, the first bending section and the second bending section cooperate to form an accommodating space;

[0064] The locking body is connected to the abutting section, the locking body is located in the abutting section and the accommodating space, and the mounting portion passes through the locking body.

[0065] It is understandable that the first bending section and the second bending section can support the abutting section, thereby preventing the abutting section from shaking after being connected to the circuit board, and preventing the connection between the connecting terminal and the circuit board from being unstable, which may cause circuit disconnection during operation of the inverter.

[0066] In a possible implementation manner, the locking body and the abutting section are an integrated structure, or the locking body and the abutting section are a separate structure.

[0067] It is understandable that when the locking body and the abutting section are an integrated structure, the overall structural strength of the locking body and the abutting section is relatively high, and the locking body and the abutting section as a whole are not easily deformed during the connection and installation of the second body. When the locking body and the abutting section are a separate structure, the respective structures of the locking body and the abutting section are relatively simple, the processing of the locking body and the abutting section is relatively easy, and the production yield of the locking body and the abutting section is relatively high.

[0068] In a possible implementation manner, the connecting piece is threadedly connected to the housing.

[0069] It is understandable that, since the mounting portion needs to pass through the circuit board and connect with the abutment section, when the circuit board needs to be removed, the second body needs to be separated from the first body, thereby opening the first clamping space. In the present application, the mounting portion is connected to the first connecting portion by a thread, so that the second body can be easily and conveniently removed from the first body, thereby installing or removing the circuit board, simplifying the disassembly process of the second body and the first body.

[0070] In a possible implementation manner, the abutting section is provided with a receiving hole, and the receiving hole penetrates the abutting section along the thickness direction of the abutting section;

[0071] The locking body comprises a first sub-portion and a second sub-portion connected to each other, the outer diameter of the first sub-portion is larger than the outer diameter of the second sub-portion, the first sub-portion is located in the accommodation space and in contact with the abutment section, and the second sub-portion is located in the accommodation hole;

[0072] The locking body has a connecting hole, and the connecting hole penetrates the first sub-portion and the second sub-portion along the thickness direction of the locking body, and at least a part of the mounting portion is located in the connecting hole.

[0073] It is understandable that since the structure of the abutting section is relatively thin and the structural strength is relatively weak, after the locking body is connected to the abutting section, the structural strength of the abutting section can be strengthened, and the overall structural strength of the first connecting part can be increased. The second body and the conductive core are fixedly connected by connecting the conductive core to the locking body, which is conducive to increasing the connection stability between the second body and the conductive core.

[0074] The second sub-section of the locking body is arranged in the accommodating hole, so that the accommodating hole can limit the second sub-section, so that the locking body and the abutting section have good connection performance. In addition, because the outer diameter of the first sub-section is larger than the outer diameter of the second sub-section, and the outer diameter of the second sub-section is compatible with the hole diameter of the accommodating hole, the first sub-section can only be located outside the abutting section and abut against the abutting section, so the first sub-section can provide support for the abutting section to prevent the structure of the abutting section from being deformed.

[0075] In a possible implementation manner, the mounting portion is threadedly connected to a hole wall of the connecting hole.

[0076] It is understandable that, since the mounting portion needs to pass through the circuit board and connect with the abutment section, when the circuit board needs to be removed, the second body needs to be separated from the first body, thereby opening the first clamping space. In the present application, the mounting portion is connected to the first connecting portion by a thread, so that the second body can be easily and conveniently removed from the first body, thereby installing or removing the circuit board, simplifying the disassembly process of the second body and the first body.

[0077] In a possible implementation manner, a first groove is formed on the inner wall of the cavity, a first protrusion is formed on the outer surface of the fixing portion, and at least a portion of the first protrusion is located in the first groove.

[0078] It can be understood that the first protrusion is engaged with the first slot, and the first protrusion of the conductive core and the first slot of the shell are mutually limited, so that the conductive core is stably installed in the shell to prevent the conductive core from shaking in the cavity of the shell.

[0079] In a possible implementation manner, a first slot is recessed on the inner wall of the cavity;

[0080] The conductive core further comprises a fixing piece, which is detachably connected to the fixing portion, and part of the fixing piece is located in the first slot.

[0081] It is understandable that, since the structure of the fixing piece is relatively complex, providing the fixing piece as a separate component and preparing it separately can simplify the preparation process of the conductive core, improve the yield rate of the conductive core, and also facilitate the maintenance of the fixing piece.

[0082] In a possible embodiment, the fixing member includes a main body and a clamping body, the main body is clamped to the periphery of the fixing portion along the circumferential direction of the fixing portion, the clamping body includes a first end and a second end, the first end is connected to the main body, there is a gap between the second end and the main body, the second end is close to the first connecting portion relative to the first end, and the second end is abutted against the groove wall of the first clamping groove.

[0083] In a possible implementation manner, a receiving groove is concavely formed on an outer surface of the fixing portion, and at least a portion of the body is located in the receiving groove.

[0084] In a possible implementation manner, a second protrusion is provided on an inner wall of the cavity, and the second protrusion abuts against an end of the fixing portion away from the first connecting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0086] Figure 1 It is a structural schematic diagram of the inverter provided by the present application;

[0087] Figure 2 yes Figure 1 A partial structural schematic diagram of the inverter shown;

[0088] Figure 3 yes Figure 1 A schematic diagram of the structure of the housing shown;

[0089] Figure 4 yes Figure 2 A schematic diagram of the structure of the circuit board shown;

[0090] Figure 5 yes Figure 2 The structural schematic diagram of the connecting terminal shown;

[0091] Figure 6 yes Figure 5 The exploded structural diagram of the connecting terminal shown;

[0092] Figure 7 yes Figure 6 A schematic structural diagram of the housing shown;

[0093] Figure 8 yes Figure 7 A schematic cross-sectional view of the AA surface of the shell shown;

[0094] Fig. 9 yes Figure 6 A schematic diagram of a structure of a conductive core shown;

[0095] Fig.10 yes Fig. 9 An exploded schematic diagram of the first connecting portion shown;

[0096] Fig.11 yes Fig. 9 A schematic structural diagram of the first connecting portion and the second main body shown;

[0097] Fig.12 yes Figure 6 Another structural schematic diagram of the conductive core shown;

[0098] Fig.13 yes Fig.12 An exploded schematic diagram of the conductive core shown;

[0099] Fig.14 yes Figure 2 A schematic cross-sectional view of the inverter taken along the BB plane is shown. DETAILED DESCRIPTION

[0100] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0101] And / or: It is just a way to describe the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0102] Multiple: refers to two or more than two.

[0103] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either direct or indirect through an intermediary.

[0104] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.

[0105] The present application provides a power conversion device, such as an inverter, a rectifier, etc. The inverter is taken as an example below. Among them, the inverter can be a photovoltaic inverter, which can convert direct current voltage into alternating current. Photovoltaic inverters can be used in photovoltaic power generation systems (photovoltaic generation system), which refers to power generation systems that use the photovoltaic effect of photovoltaic cells to directly convert solar radiation energy into electrical energy. Since the energy of the photovoltaic power generation system comes from solar energy, which is a clean, safe and renewable energy source, the power generation process of the photovoltaic power generation system does not pollute the environment or damage the ecology, and has a wide range of applications.

[0106] Exemplarily, a photovoltaic power generation system may include a solar cell array, an inverter, an energy storage device, a load, and the like. Among them, the solar cell array is a solar cell assembly that is connected in series and in parallel and mounted on a bracket. The solar cell array can output hundreds of watts, several kilowatts, or even more power, and is the power generator of the photovoltaic power generation system. The energy storage device can store the electric energy generated by the solar cell array, and the load is the user terminal of the photovoltaic power generation system. The solar cell array, the inverter, the energy storage device, and the load can be electrically connected in sequence. The solar cell array can output current using solar energy. The inverter can convert the current into alternating current. The energy storage device can store the electric energy generated by the solar cell array. The load can use alternating current to work.

[0107] Of course, the inverter provided in the embodiment of the present application is not limited to photovoltaic power generation systems, and can also be applied to fields such as electrochemical energy storage, telecommunication equipment or server power supply, electric vehicles, etc. The inverter provided in the present application is adapted to different application scenarios. For example, an application scenario of controlling a conversion circuit in a light power supply environment, an application scenario of controlling a conversion circuit in a wind power supply environment, an application scenario of controlling a conversion circuit in a pure energy storage power supply environment, or other application scenarios.

[0108] Please refer to Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of the inverter 1000 provided in this application. Figure 2 yes Figure 1 A partial structural schematic diagram of an inverter 1000 is shown.

[0109] The inverter 1000 may include a housing 100, a circuit board 200 and a connection terminal 300. The housing 100 is used to accommodate and protect some functional components of the inverter 1000. The circuit board 200 is located inside the housing 100, and the circuit board 200 can realize signal transmission and processing, thereby realizing communication between the inverters 1000. For example, the signal line on the circuit board 200 can transmit data signals, audio signals, video signals, etc. The connection terminal 300 is partially located inside the housing 100 and partially located outside the housing 100. The connection terminal 300 can provide an interface for an external device, thereby connecting the external device and the circuit board 200. Exemplarily, the connection terminal 300 is a PV (Photovoltaic) terminal. In the use scenario of the photovoltaic power generation system, the external device can be a solar cell array, and the connection terminal 300 can be electrically connected to the electrodes of the solar cell array, so that the circuit board 200 is connected to the solar cell array, so that the direct current generated by the solar cell array can be input into the inverter 1000, and the direct current is converted into alternating current in the inverter 1000 and supplied to the load for use.

[0110] In the embodiment of the present application, for the convenience of illustration, the width direction of the inverter 1000 is the X direction, the length direction of the inverter 1000 is the Y direction, the height direction of the inverter 1000 is the Z direction, and the X direction, Y direction and Z direction are perpendicular to each other.

[0111] It should be noted that Figure 2 The purpose of the present invention is only to schematically describe the connection relationship between the housing 100, the circuit board 200 and the connection terminal 300, and it does not specifically limit the connection position, specific structure and quantity of each device. The structure shown in the embodiment of the present application does not constitute a specific limitation on the inverter 1000. In other embodiments of the present application, the inverter 1000 includes Figure 2More or fewer components may be shown, or some components may be combined or separated, or the components may be arranged differently. Figure 2 The components shown may be implemented in hardware, software or a combination of software and hardware.

[0112] See also Figure 3 , Figure 3 yes Figure 1 The schematic diagram of the structure of the housing 100 shown in FIG. The shape of the housing 100 may be a rectangle. The housing 100 may include a plurality of side panels, which are sequentially connected and surrounded to form the housing 100. For example, the plurality of side panels may be a first panel 110, a second panel 120, a third panel 130, a fourth panel 140, a fifth panel 150, and a sixth panel 160. The second panel 120 and the first panel 110 are arranged relative to each other along the Z direction, and the third panel 130, the fourth panel 140, the fifth panel 150, and the sixth panel 160 are all connected between the first panel 110 and the second panel 120. The third panel 130 and the fourth panel 140 are arranged relative to each other along the Y direction, and the fifth panel 150 and the sixth panel 160 are arranged relative to each other along the X direction. The first plate 110, the second plate 120, the third plate 130, the fourth plate 140, the fifth plate 150 and the sixth plate 160 together enclose a receiving space of the inverter 1000, and the receiving space can be used to receive the circuit board 200, some connecting terminals 300 and other electronic devices, functional modules, structural parts, etc. of the inverter 1000.

[0113] Exemplarily, one or more of the six plates of the housing 100 may be an integrated plate structure, or a plate structure formed by stacking and / or splicing a plurality of plates. The outer surface of the housing 100 is the surface of the six plates facing the external environment of the housing 100, that is, the appearance surface of the inverter 1000. The outer surface of the housing 100 may be a plane, or may be provided with a protrusion structure and / or a groove structure, but is generally in a plane shape.

[0114] In an embodiment of the present application, the housing 100 may be provided with a first through hole 131, the first through hole 131 penetrates the housing 100 along the Y direction, and the first through hole 131 is connected to the receiving space of the inverter 1000. The first through hole 131 is used to install the connection terminal 300. Exemplarily, the number of the first through holes 131 may be the same as the number of the connection terminals 300, the number of the first through holes 131 may be multiple, and each of the multiple first through holes 131 is used to install a connection terminal 300. Exemplarily, the first through hole 131 may be provided on the third plate 130. The number of the first through holes 131 may be sixteen. The sixteen first through holes 131 are arranged in a matrix of two rows and eight columns.

[0115] See also Figure 4 , Figure 4 yes Figure 2Schematic diagram of the structure of the circuit board 200 shown. The circuit board 200 is provided with a second through hole 210. The number of the second through holes 210 can be the same as the number of the first through holes 131, and each second through hole 210 is used to communicate with a connecting terminal 300. Exemplarily, the second through hole 210 can be a conductive through hole. The conductive through hole passes through the circuit board 200 along the thickness direction of the circuit board 200 (i.e., the Y direction). The circuit board 200 is located inside the housing 100. The circuit board 200 can be arranged opposite to any side plate of the housing 100, for example, the circuit board 200 can be arranged opposite to the third plate 130 in the Y direction. The board structure of the circuit board 200 can be roughly parallel to the third plate 130. The position of the second through hole 210 can be arranged opposite to the position of the first through hole 131 of the third plate 130.

[0116] Please refer to Figure 5 and Figure 6 , Figure 5 yes Figure 2 The structural diagram of the connecting terminal 300 is shown in FIG. Figure 6 yes Figure 5 FIG. 1 is a schematic diagram of an exploded structure of a connecting terminal 300 shown in FIG.

[0117] The connecting terminal 300 has a central axis L5. The connecting terminal 300 may include a first body 350, a connecting member 330 and a second body 340. The second body 340 is connected to the first body 350, and the second body 340 can cooperate with the first body 350 to form a first clamping space 302, and the first clamping space 302 is used to accommodate a portion of the circuit board 200 to achieve physical and electrical connection between the connecting terminal 300 and the circuit board 200. The connecting member 330 is connected to the first body 350, and the connecting member 330 can cooperate with the first body 350 to form a second clamping space 301, and the second clamping space 301 is used to accommodate a portion of the housing 100 to achieve fixation between the connecting terminal 300 and the housing 100. The details will be described in detail below.

[0118] It is understandable that, at present, the connection terminal is generally installed on the side plate of the inverter housing. The circuit board is generally connected to the bottom plate of the housing and arranged parallel to the bottom plate. Since the side plate where the connection terminal is located is at an angle to the circuit board, and the connection terminal is far away from the circuit board, the connection terminal is generally connected to the bottom plate through a cable.

[0119] The present application can reduce the distance between the circuit board 200 and the side plate of the housing 100 by setting the position of the circuit board 200 relative to the side plate of the housing 100 (that is, the third plate 130). And by designing the structure of the connecting terminal 300, the connecting terminal 300 has a first clamping space 302 that can fix the circuit board 200, so that the connecting terminal 300 can be directly electrically connected to the circuit board 200. And the connecting terminal 300 has a second clamping space 301 that can fix the housing 100 of the inverter 1000, so that the connecting terminal 300 can be fixed to the housing 100. Since the connecting terminal 300 can directly realize the electrical connection with the circuit board 200, the cables connected between the terminal and the circuit board in the prior art can be reduced, thereby reducing the manufacturing man-hours of the inverter 1000, simplifying the assembly process of realizing the electrical connection between the connecting terminal 300 and the circuit board 200, and improving the assembly efficiency of the inverter 1000. And the connecting terminal 300 is easy to disassemble and assemble, and is convenient for maintenance.

[0120] The structural details of the connection terminal 300 are described in detail below. It should be noted that the connection terminal 300 of the present application is not limited to the above-mentioned power conversion module, but can also be applied to other electrical equipment that needs to be connected through a wiring terminal.

[0121] Please refer to Figure 6 The first body 350 may include a housing 310, a conductive core 320 and a stopper 380. The housing 310 is used to provide a connection position for the conductive core 320 and the stopper 380. At least part of the conductive core 320 is located inside the housing 310, and the conductive core 320 is a conductor material. The conductive core 320 is used to communicate with the circuit board 200. The stopper 380 is convexly arranged on the peripheral side of the housing 310, and the stopper 380 can be used to limit the housing 100 of the inverter 1000. Exemplarily, the conductive core 320 can be made of copper.

[0122] Please refer to Figure 7 and Figure 8 , Figure 7 yes Figure 6 The structural schematic diagram of the housing 310 is shown in FIG. Figure 8 yes Figure 7 The schematic cross-sectional view of the AA plane of the housing 310 is shown.

[0123] The housing 310 has a central axis L1, and the central axis L1 of the housing 310 may coincide with the central axis L5 of the connection terminal 300. The housing 310 may include a first end face 311, a second end face 312, and a peripheral side face 313. The first end face 311 is an end face of the housing 310 facing the inside of the inverter 1000, and the second end face 312 is an end face of the housing 310 facing the outside of the inverter 1000. The first end face 311 and the second end face 312 are arranged opposite to each other. The first end face 311 is connected to one side of the peripheral side face 313, and the second end face 312 is connected to the other side opposite to the peripheral side face 313. The peripheral side face 313 is an outer surface of the housing 310 that surrounds the central axis L1 of the housing 310. The peripheral side surface 313 includes a first peripheral surface 3131 and a second peripheral surface 3132. The first peripheral surface 3131 is a portion of the outer surface of the shell 310 that surrounds the central axis L1 of the shell 310, and the second peripheral surface 3132 is a portion of the outer surface of the shell 310 that surrounds the central axis L1 of the shell 310. Along the direction from the first end surface 311 to the second end surface 312 (that is, the Y direction), the first peripheral surface 3131 and the second peripheral surface 3132 are arranged in sequence.

[0124] The shell 310 is made of insulating material. The insulating shell 310 can surround the conductive core 320 inside, thereby protecting the conductive core 320, preventing the conductive core 320 from colliding with other components, and preventing the electrical performance and structural stability of the conductive core 320 from being affected. Exemplarily, the shell 310 can be made of plastic.

[0125] In a possible implementation, Figure 7 As shown, the first circumferential surface 3131 includes a first surface 3134 and a second surface 3135 arranged opposite to each other along the X direction, and a third surface 3136 and a fourth surface 3137 arranged opposite to each other along the Z direction. The third surface 3136 and the fourth surface 3137 are connected between the first surface 3134 and the second surface 3135. Among them, the first surface 3134 and the second surface 3135 can be convex arc surfaces, and the third surface 3136 and the fourth surface 3137 can be planes. The first surface 3134 and the second surface 3135 are provided with a first external thread 3146. Exemplarily, the first external thread 3146 can be a trapezoidal thread.

[0126] It should be noted that the first peripheral surface 3131 may not be limited to Figure 7 As shown in the shape, the first circumferential surface 3131 may also be a cylindrical surface, a quasi-cylindrical surface or other shapes, and the first external thread 3146 may not be intermittently arranged on the first circumferential surface 3131, but may be arranged in a whole circle around the first circumferential surface 3131. The embodiments of the present application do not impose strict restrictions on the shape of the first circumferential surface 3131, the shape and setting position of the first external thread 3146, etc.

[0127] In a possible implementation, Figure 7 As shown, the housing 310 is further provided with an air hole 3148. The air hole 3148 penetrates the first peripheral surface 3131 along the thickness direction (i.e., the X direction) of the housing 310. The opening of the air hole 3148 can be located at the groove of the first external thread 3146. The groove of the first external thread 3146 is also the groove between two adjacent teeth (protrusions) of the first external thread 3146.

[0128] It can be understood that the air holes 3148 can serve as heat dissipation channels for the conductive core 320 , and the heat generated by the conductive core 320 during the process of conducting current can be transferred to the external environment through the air holes 3148 .

[0129] The limiting portion 380 is connected to the peripheral side surface 313 of the shell 310. Exemplarily, the limiting portion 380 can be located at the junction of the first peripheral surface 3131 and the second peripheral surface 3132. The limiting portion 380 is located on the side of the first external thread 3146 away from the first end surface 311. The limiting portion 380 is protruded relative to the first surface 3134, the second surface 3135, the third surface 3136 and the fourth surface 3137. The limiting portion 380 can be annular and sleeved on the peripheral side surface 313 of the shell 310. The limiting portion 380 can also be integrally formed with the shell 310. The air vent 3148 is located on the side of the limiting portion 380 facing the first end surface 311.

[0130] Please refer to Figure 8 The housing 310 has a cavity 360 inside, and the cavity 360 passes through the first end surface 311 and the second end surface 312. The opening of the cavity 360 at the first end surface 311 is the first opening 3601, and the opening of the cavity 360 at the second end surface 312 is the second opening 3602. That is, the first opening 3601 and the second opening 3602 are both connected to the cavity 360.

[0131] The cavity 360 may include a first sub-cavity 361, a second sub-cavity 362, and a third sub-cavity 363. In the direction from the first end face 311 to the second end face 312 (i.e., the Y direction), the first sub-cavity 361, the second sub-cavity 362, and the third sub-cavity 363 are arranged in sequence. In some possible embodiments, in the direction from the first end face 311 to the second end face 312, the inner diameter of the first sub-cavity 361 is greater than the inner diameters of the second sub-cavity 362 and the third sub-cavity 363. The inner diameter of the second sub-cavity 362 is greater than the inner diameter of the third sub-cavity 363. The first sub-cavity 361, the second sub-cavity 362, and the third sub-cavity 363 can cooperate to accommodate the conductive core 320. The second sub-cavity 362 is used to be fixedly connected to the conductive core 320.

[0132] It is understandable that during the installation process, the conductive core 320 can be inserted into the cavity 360 from one side of the first sub-cavity 361 of the cavity 360. When the inner diameter of the first sub-cavity 361 is large, the alignment process of the conductive core 320 inserted into the first sub-cavity 361 is relatively easy, which simplifies the assembly process of the conductive core 320. Because the inner diameter of the second sub-cavity 362 is larger than the third sub-cavity 363, after the conductive core 320 is inserted into the second sub-cavity 362, the conductive core 320 can slide into the third sub-cavity 363 along the inner wall of the second sub-cavity 362, and the conductive core 320 can be installed inside the shell 310 under the guidance of the cavity wall of the cavity 360, which reduces the precise alignment process of the conductive core 320 and the shell 310 during the assembly process. Because the cavity wall of the second sub-cavity 362 and the cavity wall of the third sub-cavity 363 can directly contact the conductive core 320. Therefore, the cavity wall of the second sub-cavity 362 and the cavity wall of the third sub-cavity 363 can limit the conductive core 320. Setting the inner diameter of the second sub-cavity 362 and the third sub-cavity 363 smaller is conducive to increasing the connection strength between the conductive core 320 and the housing 310, and preventing the conductive core 320 from falling off from the housing 310.

[0133] It should be noted that the position of the first subcavity 361 inside the housing 310 can be set corresponding to the first peripheral surface 3131 of the peripheral side surface 313 of the housing 310. The position of the second subcavity 362 and the position of the third subcavity 363 inside the housing 310 can be set corresponding to the second peripheral surface 3132.

[0134] The inner wall of the second sub-cavity 362 is provided with a first slot 3622 and a second protrusion 3621. The first slot 3622 is recessed by the inner wall of the second sub-cavity 362. The second protrusion 3621 is located between the first slot 3622 and the second end surface 312. The second protrusion 3621 is protruded from the inside of the second sub-cavity 362. The second protrusion 3621 is located on the side of the first slot 3622 facing the third sub-cavity 363. The second protrusion 3621 and the first slot 3622 are used to limit the conductive core 320.

[0135] See also Fig. 9 , Fig. 9 yes Figure 6A structural schematic diagram of the conductive core 320 shown. The conductive core 320 can conduct the circuit board 200 with the external device. The conductive core 320 has a central axis L2, and the central axis L2 of the conductive core 320 can coincide with the central axis L5 of the connecting terminal 300. The conductive core 320 may include a first connecting portion 321, a second connecting portion 322 and a fixing portion 323. The first connecting portion 321 and the second connecting portion 322 are respectively connected to opposite sides of the fixing portion 323, and the fixing portion 323, at least part of the first connecting portion 321, and at least part of the second connecting portion 322 are located in the cavity 360 of the housing 310. Among them, the first connecting portion 321 is used to connect with the circuit board 200, so as to realize the electrical connection between the conductive core 320 and the circuit board 200. The second connecting portion 322 is used to connect with the external device, so as to realize the electrical connection between the conductive core 320 and the external device. The fixing portion 323 is used to connect with the inner wall of the housing 310, so as to realize the fixed connection between the conductive core 320 and the housing 310.

[0136] The first connection portion 321 is used to connect with the second body 340, so that a first clamping space 302 can be formed between the first connection portion 321 and the second body 340. The circuit board 200 can be fixed in the first clamping space 302 and contact and conduct with the first connection portion 321. Exemplarily, the cross-sectional shape of the first connection portion 321 can be similar to a triangle.

[0137] Please refer to Fig.10 and Fig.11 , Fig.10 yes Fig. 9 An exploded schematic diagram of the first connecting portion 321 is shown. Fig.11 yes Fig. 9 The first connecting portion 321 shown is a schematic diagram of the structure of the cooperation with the second main body 340. The first connecting portion 321 may include an abutting section 3211, a first bending section 3212, a second bending section 3213 and a locking body 3215.

[0138] The abutting section 3211 defines a receiving hole 3216 , and the receiving hole 3216 penetrates the abutting section 3211 along the thickness direction (ie, the Y direction) of the abutting section 3211 .

[0139] The first bending section 3212 and the second bending section 3213 are respectively connected to opposite sides of the abutting section 3211. One end of the first bending section 3212 is bent and connected to the abutting section 3211, and the other end of the first bending section 3212 is connected to an end of the fixing portion away from the second connecting portion 322. One end of the second bending section 3213 is bent and connected to the abutting section 3211, and the other end of the second bending section 3213 is connected to an end of the fixing portion away from the second connecting portion 322. The abutting section 3211, the first bending section 3212, and the second bending section 3213 cooperate to form a receiving space 3220.

[0140] It is understandable that the abutting section 3211, the first bending section 3212, and the second bending section 3213 can form a similar triangular structure. Therefore, the overall structure of the abutting section 3211, the first bending section 3212, and the second bending section 3213 is relatively stable and not easily deformed. The first bending section 3212 and the second bending section 3213 can support the abutting section 3211, thereby preventing the abutting section 3211 from shaking after being connected to the circuit board 200, and preventing the connection between the connecting terminal 300 and the circuit board 200 from being unstable, which may cause the inverter 1000 to be disconnected during operation.

[0141] The locking body 3215 has a central axis L3, and the central axis L3 of the locking body 3215 can coincide with the central axis L2 of the conductive core 320. The locking body 3215 includes a first sub-section 3217 and a second sub-section 3218. The first sub-section 3217 and the second sub-section 3218 are both cylindrical. And the outer diameter of the first sub-section 3217 is greater than the outer diameter of the second sub-section 3218. The first sub-section 3217 and the second sub-section 3218 can be coaxially arranged. The locking body 3215 is provided with a connecting hole 3214. The connecting hole 3214 penetrates the first sub-section 3217 and the second sub-section 3218 along the axial direction of the locking body 3215, wherein the axial direction of the locking body 3215 can be the direction where the central axis L3 of the locking body 3215 is located. The hole wall of the connecting hole 3214 can be provided with a second internal thread 3219.

[0142] The second sub-portion 3218 of the locking body 3215 is located in the receiving hole 3216, and the second sub-portion 3218 of the locking body 3215 can be connected to the hole wall of the receiving hole 3216. The first sub-portion 3217 of the locking body 3215 is located outside the receiving hole 3216, and the first sub-portion 3217 is located in the receiving space 3220. The first sub-portion 3217 contacts the surface of the side of the abutting section 3211 facing the fixing portion 323. The first sub-portion 3217 of the locking body 3215 can abut against the surface of the abutting section 3211.

[0143] It is understandable that since the structure of the abutting section 3211 is relatively thin and the structural strength is relatively weak, after the locking body 3215 is connected to the abutting section 3211, the structural strength of the abutting section 3211 can be strengthened, and the overall structural strength of the first connecting portion 321 can be increased. The second body 340 and the conductive core 320 are fixedly connected by connecting the conductive core 320 and the locking body 3215, which is conducive to increasing the connection stability between the second body 340 and the conductive core 320.

[0144] The second sub-portion 3218 of the locking body 3215 is arranged in the accommodating hole 3216, so that the accommodating hole 3216 can limit the second sub-portion 3218, so that the locking body 3215 and the abutting section 3211 have good connection performance. In addition, because the outer diameter of the first sub-portion 3217 is larger than the outer diameter of the second sub-portion 3218, and the outer diameter of the second sub-portion 3218 is matched with the hole diameter of the accommodating hole 3216, the first sub-portion 3217 can only be located outside the abutting section 3211 and abut against the abutting section 3211, so the first sub-portion 3217 can provide support for the abutting section 3211 to prevent the structure of the abutting section 3211 from being deformed.

[0145] In the embodiments of the present application, Fig.10 As shown, the locking body 3215 and the first connecting portion 321 can be a split structure. In other words, the locking body 3215 and the abutting section 3211, the first bending section 3212, and the second bending section 3213 are split structures. Exemplarily, the locking body 3215 and the abutting section 3211 can be fixed by a detachable connection method such as welding, clamping, and screwing. Alternatively, the locking body 3215 and the first connecting portion 321 can be an integral structure. In other words, the locking body 3215 can also be an integral structure with the abutting section 3211, the first bending section 3212, and the second bending section 3213. Exemplarily, the locking body 3215 and the abutting section 3211 can be an integral structure achieved by an integral molding method. It is understandable that when the locking body 3215 and the abutting section 3211 are an integrated structure, the overall structural strength of the locking body 3215 and the abutting section 3211 is relatively high, and the locking body 3215 and the abutting section 3211 are not easily deformed during the connection and installation of the second body 340 and the conductive core 320. When the locking body 3215 and the abutting section 3211 are a split structure, the respective structures of the locking body 3215 and the abutting section 3211 are relatively simple, the processing of the locking body 3215 and the abutting section 3211 is relatively easy, and the production yield of the locking body 3215 and the abutting section 3211 is relatively high.

[0146] In a possible implementation, Fig. 9 As shown, the outer surface of the fixing portion 323 may be provided with a first protrusion 3230. Specifically, the first protrusion 3230 is provided on the peripheral side of the fixing portion 323. At least part of the first protrusion 3230 is located in the first clamping groove 3622 of the cavity 360, and the first protrusion 3230 is clamped with the first clamping groove 3622 of the cavity 360, so that the conductive core 320 is fixedly connected to the housing 310, and the first protrusion 3230 and the first clamping groove 3622 are mutually limited.

[0147] It is understandable that the first protrusion 3230 of the conductive core 320 and the first slot 3622 of the shell are mutually limited, so that the conductive core 320 is stably installed in the shell 310 to prevent the conductive core 320 from shaking in the cavity of the shell 310.

[0148] The circumferential dimension of the second connection portion 322 may be smaller than the circumferential dimension of the fixing portion 323. The central axis of the second connection portion 322 may coincide with the central axis of the fixing portion 323. The central axis of the second connection portion 322 may coincide with the central axis L2 of the conductive core 320, and the central axis of the fixing portion 323 may coincide with the central axis L2 of the conductive core 320.

[0149] It is understandable that when the conductive core 320 is assembled with the housing 310, the second connection portion 322 of the conductive core 320 can be first inserted from the first sub-cavity 361, and finally the second connection portion 322 reaches the third sub-cavity 363. When the circumferential dimension of the second connection portion 322 is smaller than the circumferential dimension of the fixing portion 323, the second connection portion 322 is not easy to interfere with the cavity walls of the first sub-cavity 361 and the second sub-cavity 362 during the insertion process, thereby ensuring that the conductive core 320 can be smoothly inserted into the housing 310.

[0150] For another possible implementation, see Fig.12 and Fig.13 , Fig.12 yes Figure 6 Another structural schematic diagram of the conductive core 320 is shown. Fig.13 yes Fig.12 Schematic diagram of the explosion of the conductive core shown. Different from the above possible embodiments, the fixing portion 323 may include a first portion 3231, a second portion 3232, a third portion 3233 and a fixing member 3234. Along the length direction of the conductive core (i.e., the Y direction), the third portion 3233, the first portion 3231 and the second portion 3232 are arranged in sequence. The fixing member 3234 is connected to the outer surface of the first portion 3231. The fixing member 3234 is detachably connected to the fixing portion 323.

[0151] The central axis of the first part 3231, the central axis of the second part 3232 and the central axis of the third part 3233 are arranged to overlap. Among them, the central axis of the first part 3231, the central axis of the second part 3232 and the central axis of the third part 3233 can overlap with the central axis L2 of the conductive core 320. The circumferential size of the second part 3232 and the circumferential size of the third part 3233 are greater than the circumferential size of the first part 3231, so that the outer peripheral surface of the first part 3231 is recessed relative to the outer peripheral surface of the second part 3232 and the third part 3233. The first part 3231, the second part 3232 and the third part 3233 can cooperate to form a receiving groove 325, and the circumferential side surface of the first part 3231 and the end surface of the second part 3232 and the end surface of the third part 3233 can jointly form the groove wall of the receiving groove 325.

[0152] The first portion 3231 is provided with a connecting through hole 3235, and the connecting through hole 3235 passes through the peripheral side surface 313 of the first portion 3231. That is, the connecting through hole 3235 passes through the bottom wall of the accommodating groove 325. Exemplarily, the number of the connecting through holes 3235 can be two, and the two connecting through holes 3235 are arranged at intervals, and the two connecting through holes 3235 are arranged in sequence along the length direction of the conductive core 320.

[0153] See also Fig.12 and Fig.13 The fixing member 3234 may include a main body 3236 , a first buckle 3237 , a second buckle 3238 and a holding body 3239 .

[0154] The body 3236 includes a first end 3240, a second end 3241, and a surrounding portion 3242. The first end 3240 and the second end 3241 are arranged opposite to each other and spaced apart. The surrounding portion 3242 is connected between the first end 3240 and the second end 3241. The first buckle 3237 is connected to the first end 3240, and the first buckle 3237 is located on the inner surface of the first end 3240. The second buckle 3238 is connected to the second end 3241, and the second buckle 3238 is located on the inner surface of the second end 3241.

[0155] The clamping body 3239 is connected to the surrounding portion 3242, and the clamping body 3239 protrudes relative to the outer periphery of the surrounding portion 3242. The clamping body 3239 includes a first end 3243 and a second end 3244. The second end 3244 is closer to the first connecting portion 321 relative to the first end 3243. The first end 3243 is connected to the surrounding portion 3242 of the body 3236, and there is a gap between the second end 3244 and the surrounding portion 3242 of the body 3236. Exemplarily, the number of the clamping bodies 3239 can be one or more. When the number of the clamping bodies 3239 is multiple, the multiple clamping bodies 3239 are arranged at intervals. For example, the number of the clamping bodies 3239 can be four.

[0156] When the fixing member 3234 is connected to the fixing portion 323, the body 3236 of the fixing member 3234 is clamped to the periphery of the fixing portion 323 along the circumferential direction of the fixing portion 323, the clamping body 3239 can be protruded relative to the fixing portion 323, and the first buckle 3237 and the second buckle 3238 are both connected to the connecting through hole 3235 of the fixing portion 323, wherein the circumferential direction of the fixing portion 323 is the circumferential direction surrounding the central axis of the fixing portion 323, that is, the circumferential direction surrounding the central axis L2 of the conductive core 320. Specifically, at least part of the body 3236 of the fixing member 3234 is located in the receiving groove 325 of the fixing portion 323. The body 3236 of the fixing member 3234 surrounds the outer periphery of the first part 3231 of the fixing portion 323. The body 3236 of the fixing member 3234 can be abutted against an end surface of the second part 3232 of the fixing portion 323 facing the first part 3231 of the fixing portion 323. The body 3236 of the fixing member 3234 may also abut against an end of the third portion 3233 of the fixing portion 323 that faces the first portion 3231 of the fixing portion 323 .

[0157] Exemplarily, the number of the first buckles 3237 is two, and the two first buckles 3237 are respectively connected to one side wall surface of the two connecting through holes 3235. The number of the second buckles 3238 is two, and the two second buckles 3238 are respectively connected to the other side wall surface of the two connecting through holes 3235. At least part of the first buckle 3237 and at least part of the second buckle 3238 are located in the connecting through hole 3235 and are arranged opposite to each other.

[0158] When the conductive core 320 is connected to the inside of the housing 310, at least a portion of the holding body 3239 of the fixing member 3234 is located in the first slot 3622 of the housing 310, and the holding body 3239 of the fixing member 3234 is engaged with the first slot 3622 of the housing 310, thereby fixing the conductive core 320 to the housing 310. Specifically, the second end 3244 of the holding body 3239 abuts against the slot wall of the first slot 3622.

[0159] It is understandable that, due to the complex structure of the fixing member 3234, Fig.12 and Fig.13 The structural design can set the fixing member 3234 as a separate component and prepare it separately, which can simplify the preparation process of the conductive core 320, improve the yield rate of the conductive core 320, and also facilitate the maintenance of the fixing member 3234.

[0160] In addition, the second part 3232 and the third part 3233 of the fixing portion 323 can limit the fixing member 3234. In the axial direction of the conductive core 320, the second part 3232 and the third part 3233 respectively apply a holding force to the fixing member 3234 from both sides of the fixing member 3234, so that the fixing member 3234 can be stably sleeved on the outer periphery of the first part 3231, so that the fixing member 3234 is not easy to shake relative to the first part 3231, wherein the axial direction of the conductive core 320 can be the direction where the central axis L2 of the conductive core 320 is located. That is, the groove wall of the accommodating groove 325 can limit the fixing member 3234. The fixing member 3234 and the conductive core 320 can be fixedly connected, so that after the fixing member 3234 and the shell 310 are abutted and fixed, the conductive core 320 can be fixed relative to the shell 310.

[0161] Furthermore, since the second end 3244 of the holding body 3239 abuts against the groove wall of the first groove 3622, the groove wall of the first groove 3622 can provide a supporting force for the second end 3244, and the supporting force can be transmitted from the second end 3244 to the first end 3243. Thus, the fixing portion 323 of the conductive core 320 is stably installed in the second sub-cavity 362 of the housing 310. Therefore, when the conductive core 320 is subjected to a force from the fixing portion 323 toward the first connecting portion 321, it will not fall out of the first opening 3601. For example, when the connecting terminal 300 is plugged into an external device, the plug interface of the external device will apply a force from the fixing portion 323 toward the first connecting portion 321 to the conductive core 320, and the abutment between the second end 3244 and the groove wall of the first groove 3622 can prevent the conductive core 320 from falling out of the housing 310.

[0162] When the conductive core 320 is installed in the housing 310, at least part of the conductive core 320 is located inside the housing 310. The first opening 3601 exposes the conductive core 320. Specifically, the first connecting portion 321 of the conductive core 320 can be located in the first sub-cavity 361 of the housing 310, and the first connecting portion 321 of the conductive core 320 is located on the side of the fixing portion 323 of the conductive core 320 facing the first end surface 311. The abutting section 3211 of the first connecting portion 321 can be flush with the first end surface 311 of the housing 310, or the first connecting portion 321 protrudes relative to the first end surface 311 of the housing 310.

[0163] It is understandable that since the abutment section 3211 of the conductive core 320 can be flush or protruding relative to the first end surface 311 of the shell 310, the abutment section 3211 of the conductive core 320 can directly contact the circuit board 200, thereby directly electrically connecting the conductive core 320 to the circuit board 200.

[0164] The fixing portion 323 of the conductive core 320 may be located in the second sub-cavity 362 of the housing 310. One end of the fixing portion 323 of the conductive core 320 away from the abutting section 3211 of the conductive core 320 abuts against the second protrusion 3621 of the housing 310. That is, one end of the second portion 3232 of the fixing portion 323 away from the first portion 3231 may abut against the second protrusion 3621 of the housing 310.

[0165] The second connection portion 322 of the conductive core 320 may be located in the third subcavity 363 of the housing 310 .

[0166] It can be understood that the second protrusion 3621 of the housing 310 can abut against the fixing portion 323 of the conductive core 320, thereby limiting the movement of the fixing portion 323 along the axial direction of the conductive core 320, so that the housing 310 can limit the conductive core 320. In addition, the conductive core 320 can be fixedly installed inside the housing 310, increasing the stability of the connection between the conductive core 320 and the housing 310.

[0167] Please refer to Figure 5 and Figure 6 , the connector 330 is connected to the peripheral side surface 313 of the housing 310. The connector 330 is used to connect to the housing 310. In the direction from the first end surface 311 to the second end surface 312, the connector 330 and the limiting portion 380 of the housing 310 are arranged opposite to each other, so that a second clamping space 301 is formed between the connector 330 and the limiting portion 380 of the housing 310. The second clamping space 301 is used to fix the housing 100 of the inverter 1000. Exemplarily, the connector 330 can be a nut. The inner wall of the connector 330 can be provided with a first internal thread 331.

[0168] It can be understood that, since the first internal thread 331 of the connector 330 is connected to the first external thread 3146 of the housing 310, the connector 330 is threadedly connected to the housing 310, so the connector 330 can rotate around the center line L4 of the connector 330, and move relative to the limit portion 380 of the housing 310 along the axial direction of the connecting terminal 300 to approach or move away from the limit portion 380, thereby adjusting the spacing between the limit portion 380 and the connector 330, that is, adjusting the width of the second clamping space 301, wherein the axial direction of the connecting terminal 300 can be the direction of the central axis L5 of the connecting terminal 300. The axial direction of the connecting terminal 300 is perpendicular to the side plate (such as the third plate 130) and the circuit board 200.

[0169] It can be understood that the width of the second clamping space 301 is the distance between the connecting member 330 and the limiting portion 380. By rotating the connecting member 330, the rotational movement of the connecting member 330 can be converted into the axial movement of the connecting member 330 to adjust the distance between the connecting member 330 and the limiting portion 380, thereby adjusting the width of the second clamping space 301, so that the width of the second clamping space 301 can be adjusted to adapt to the thickness of the housing 100 of the inverter 1000, and has strong flexibility.

[0170] The second body 340 has a central axis L6, and the central axis L6 of the second body 340 can coincide with the central axis L5 of the connecting terminal 300. The second body 340 may include a mounting portion 341 and a clamping portion 342. The clamping portion 342 is provided at one end of the mounting portion 341. Exemplarily, the second body 340 may be a screw. The mounting portion 341 may be a rod portion of a screw. The clamping portion 342 may be the head of the screw. The circumferential surface of the mounting portion 341 may be provided with a second external thread 3411, and the second external thread 3411 of the mounting portion 341 is connected to the second internal thread 3219 of the connecting hole 3214.

[0171] When the second body 340 is connected to the first body 350, the mounting portion 341 of the second body 340 is connected to the first connection portion 321 of the conductive core 320. A first clamping space 302 is formed between the clamping portion 342 of the second body 340 and the first connection portion 321 of the conductive core 320. The width of the first clamping space 302 is the distance between the clamping portion 342 and the first connection portion 321. The first clamping space 302 is used to fix the circuit board 200 of the inverter 1000.

[0172] It can be understood that, since the second external thread 3411 of the mounting portion 341 of the second body 340 is threadedly connected with the second internal thread 3219 of the first connection portion 321 of the conductive core 320, and since the mounting portion 341 of the second body 340 is also fixedly connected with the clamping portion 342 of the second body 340, the connector 330 as a whole can be threadedly connected with the housing 310. Therefore, the clamping portion 342 of the second body 340 can rotate around the center line of the mounting portion 341, and move relative to the first connection portion 321 of the conductive core 320 along the axial direction of the connecting terminal 300 to approach or move away from the first connection portion 321 of the conductive core 320, thereby adjusting the width of the first clamping space 302, wherein the axial direction of the connecting terminal 300 can be the direction of the central axis L5 of the connecting terminal 300, and the center line of the mounting portion 341 can coincide with the central axis L6 of the second body 340.

[0173] It can be understood that by rotating the second body 340, the rotational movement of the second body 340 can be converted into the axial movement of the second body 340 to adjust the distance between the clamping portion 342 of the second body 340 and the first connecting portion 321 of the conductive core 320, thereby adjusting the width of the first clamping space 302, so that the width of the first clamping space 302 can be adjusted to adapt to the thickness of the circuit board 200, with strong flexibility.

[0174] In a possible implementation, the connection terminal 300 may further include a gasket 370, and the gasket 370 may be sleeved on the peripheral side surface 313 of the housing 310. Specifically, the gasket 370 may be sleeved on the first peripheral surface 3131 of the housing 310. The gasket 370 is located on the side of the limiting portion 380 facing the first end surface 311. The gasket 370 is located in the second clamping space 301. The space between the gasket 370 and the connector 330 may be used to clamp the housing 100. It is understandable that by adding the gasket 370 and changing the thickness of the gasket 370, the size of the space between the gasket 370 and the connector 330 may be adjusted, so that the width of the space between the gasket 370 and the connector 330 is adapted to the thickness of the third plate 130.

[0175] See also Fig.14 , Fig.14 yes Figure 2 BB surface cross-sectional schematic diagram of the inverter 1000 shown. When the connection terminal 300 is connected to the housing 100 and the circuit board 200, the connection terminal 300 can be inserted into the first through hole 131 of the housing 100. The first circumferential surface 3131 of the first body 350 can be located inside the housing 100, and the first circumferential surface 3131 of the first body 350 can be located on the side of the third plate 130 of the housing 100 facing the circuit board 200. The limiting portion 380 of the first body 350 can be located on the side of the third plate 130 of the housing 100 away from the circuit board 200, that is, the first circumferential surface 3131 of the first body 350 can be located inside the housing 100. The second circumferential surface 3132 and the third circumferential surface 3133 of the first body 350 can be located outside the housing 100 for external device plugging.

[0176] The connecting member 330 is connected to the position of the first external thread 3146 of the first circumferential surface 3131 of the first body 350. The connecting member 330 can abut against the surface of the third plate 130 of the housing 100 facing the circuit board 200. That is, the connecting member 330 can be located inside the housing 100. The second clamping space 301 between the connecting member 330 and the limiting portion 380 of the first body 350 can fix the third plate 130 of the housing 310.

[0177] At least part of the conductive core 320 is located inside the housing 310 of the first body 350, and the first end surface 311 of the housing 310 faces the circuit board 200. When the first connection portion 321 of the conductive core 320 is flush with the first end surface 311 of the housing 310 through the first opening 3601. The first end surface 311 of the housing 310 and the first connection portion 321 of the conductive core 320 can both abut against the surface of the circuit board 200 facing the housing 310. Thus, the conductive core 320 can be electrically connected to the circuit board 200, and the electrical conduction between the connecting terminal 300 and the circuit board 200 is achieved. When the first connection portion 321 of the conductive core 320 protrudes relative to the first end surface 311 of the housing 310 through the first opening 3601, the first connection portion 321 of the conductive core 320 can abut against the surface of the circuit board 200 facing the housing 310. The connection hole 3214 of the conductive core 320 is correspondingly arranged and conductive with the second through hole 210 of the circuit board 200.

[0178] One end of the mounting portion 341 of the second body 340 away from the clamping portion 342 of the second body 340 passes through the first opening 3601 of the housing 310 and is connected to the conductive core 320. At least part of the mounting portion 341 of the second body 340 is located in the second through hole 210 of the circuit board 200 and the connecting hole 3214 of the conductive core 320. The clamping portion 342 of the second body 340 is located on the side of the circuit board 200 away from the housing 310. The clamping portion 342 of the second body 340 can move relative to the first connecting portion 321 of the conductive core 320 along the axial direction of the connecting terminal 300 to approach or move away from the abutting section 3211 of the first connecting portion 321, wherein the axial direction of the connecting terminal 300 can be the direction where the central axis L5 of the connecting terminal 300 is located. So that the distance between the clamping portion 342 of the second body 340 and the abutting section 3211 of the first connecting portion 321 can be adjusted. Thus, the width of the first clamping space 302 is adjusted. The first clamping space 302 between the clamping portion 342 of the second body 340 and the abutting section 3211 of the first connecting portion 321 can fix the circuit board 200 .

[0179] It is understandable that when the first body 350 passes through the housing 100 of the inverter 1000, part of the first body 350 is located inside the housing 100 of the inverter 1000, and part of the first body 350 is located outside the housing 100 of the inverter 1000. Since the connector 330 is located inside the housing 100 of the inverter 1000 and connected to the outer periphery of the shell 310 of the first body 350, the connector 330 is also arranged opposite to the stopper 380 of the first body 350, so that the housing 100 of the inverter 1000 can be clamped by the connector 330 and the stopper 380, so that the connection terminal 300 can be fixedly connected to the housing 100 of the inverter 1000.

[0180] The circuit board 200 of the inverter 1000 may contact the conductive core 320 of the first body 350. The mounting portion 341 of the second body 340 may pass through the circuit board 200 to fix the circuit board 200 and the first connection portion 321 of the conductive core 320, thereby increasing the mounting stability of the circuit board 200 and the first connection portion 321 of the conductive core 320. The clamping portion 342 of the second body 340 and the first connection portion 321 of the conductive core 320 may be located at opposite sides of the circuit board 200, respectively, thereby clamping the circuit board 200.

[0181] The connection terminal 300 of the present application can be directly electrically connected to the circuit board 200, thereby avoiding the use of cables to connect the connection terminal 300 and the circuit board 200. Therefore, the inverter 1000 also reduces the preparation cost of the cables and the time cost of assembling the cables during the preparation process. The inverter 1000 provided in the present application simplifies the assembly process of the connection terminal 300 and the circuit board 200 by changing the connection method between the connection terminal 300 and the circuit board 200 inside the inverter 1000, thereby improving the assembly efficiency of the connection terminal 300 and the circuit board 200.

[0182] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An inverter, characterized in that: include: A housing, the housing comprising a side plate, the side plate being provided with a first through hole; A circuit board, the circuit board is located inside the housing and arranged opposite to the side plate, the circuit board is provided with a second through hole, and the second through hole is arranged opposite to the first through hole; and A connecting terminal, the axial direction of which is perpendicular to the side plate and the circuit board, and the connecting terminal comprises: A first body, the first body comprising a shell, a limiting portion and a conductive core, one end of the shell being located outside the shell, the shell passing through the first through hole, the other end of the shell being located inside the shell, the shell comprising a peripheral side surface and a first end surface connected to each other, the first end surface being provided with a first opening, the limiting portion being located outside the shell and protruding from the peripheral side surface, at least part of the conductive core being located inside the shell, the first opening exposing the conductive core, and the conductive core being in contact with the circuit board; a second body located inside the housing, the second body comprising a mounting portion and a clamping portion, the clamping portion being disposed at one end of the mounting portion, an end of the mounting portion away from the clamping portion passing through the second through hole and the first opening to be connected to the conductive core, a first clamping space being formed between the clamping portion and the conductive core, and the circuit board being located in the first clamping space; and A connecting piece is located inside the shell, the connecting piece is connected to the peripheral side surface, a second clamping space is formed between the connecting piece and the limiting portion, and the side plate is located in the second clamping space.

2. The inverter according to claim 1, characterized in that: The housing has a cavity, and the cavity is communicated with the first opening; The conductive core comprises a fixed portion and a first connecting portion connected to each other, and the fixed portion and at least a portion of the first connecting portion are located in the cavity; The first connection portion is connected to the mounting portion, and a surface of the first connection portion facing the clamping portion is flush with the first end surface, or the first connection portion protrudes relative to the first end surface.

3. The inverter according to claim 2, characterized in that: The clamping portion can rotate around the center line of the mounting portion and move relative to the first connecting portion along the axial direction of the connecting terminal to approach or move away from the first connecting portion.

4. The inverter according to claim 2 or 3, characterized in that: The connecting member can rotate around the center line of the connecting member and move relative to the limiting portion along the axial direction of the connecting terminal to approach or move away from the limiting portion.

5. The inverter according to any one of claims 2 to 4, characterized in that: A first groove is formed on the inner wall of the cavity, and a first protrusion is formed on the outer surface of the fixing portion. At least a portion of the first protrusion is located in the first groove.

6. The inverter according to any one of claims 2 to 4, characterized in that: The inner wall of the cavity is concavely provided with a first clamping groove; The conductive core further comprises a fixing piece, which is detachably connected to the fixing portion, and part of the fixing piece is located in the first slot.

7. The inverter according to any one of claims 1 to 6, characterized in that: The connecting piece is threadedly connected to the housing.

8. The inverter according to any one of claims 2 to 7, characterized in that: The first connecting portion includes an abutting section, a first bending section, a second bending section and a locking body; The abutting section can abut against the circuit board; One end of the first bending section is bent and connected to one end of the abutting section, and the other end of the first bending section is connected to the fixing portion; One end of the second bending section is bent and connected to the other end of the abutting section, and the other end of the second bending section is connected to the fixing portion; The abutting section, the first bending section and the second bending section cooperate to form an accommodating space; The locking body is connected to the abutting section, the locking body is located in the abutting section and the accommodating space, and the mounting portion passes through the locking body.

9. The inverter according to claim 8, characterized in that: The abutting section is provided with a receiving hole, and the receiving hole penetrates the abutting section along the thickness direction of the abutting section; The locking body comprises a first sub-portion and a second sub-portion connected to each other, the outer diameter of the first sub-portion is larger than the outer diameter of the second sub-portion, the first sub-portion is located in the accommodation space and in contact with the abutment section, and the second sub-portion is located in the accommodation hole; The locking body has a connecting hole, and the connecting hole penetrates the first sub-portion and the second sub-portion along the thickness direction of the locking body, and at least a part of the mounting portion is located in the connecting hole.

10. The inverter according to claim 8, characterized in that: The locking body and the abutting section are an integrated structure, or the locking body and the abutting section are a split structure.

11. The inverter according to claim 9 or 10, characterized in that: The mounting portion is threadedly connected to the hole wall of the connecting hole.

12. A connecting terminal, characterized in that: include: A first body, the first body comprising a shell, a limiting portion and a conductive core, the shell comprising a peripheral side surface and a first end surface connected to each other, the first end surface being provided with a first opening, the limiting portion being convexly provided on the peripheral side surface, at least part of the conductive core being located inside the shell, and the first opening exposing the conductive core; a second body, the second body comprising a mounting portion and a clamping portion, the clamping portion being arranged at one end of the mounting portion, an end of the mounting portion away from the clamping portion passing through the first opening and connected to the conductive core, a first clamping space being formed between the clamping portion and the conductive core, the first clamping space being used to fix a circuit board of the inverter; and A connecting piece is connected to the peripheral side surface, and a second clamping space is formed between the connecting piece and the limiting portion, and the second clamping space is used to fix the housing of the inverter.

13. The connecting terminal according to claim 12, characterized in that: The housing has a cavity, and the cavity is communicated with the first opening; The conductive core comprises a fixed portion and a first connecting portion connected to each other, and the fixed portion and at least a portion of the first connecting portion are located in the cavity; The first connection portion is connected to the mounting portion, and a surface of the first connection portion facing the clamping portion is flush with the first end surface, or the first connection portion protrudes relative to the first end surface.

14. The connecting terminal according to claim 13, characterized in that: The clamping portion can rotate around the center line of the mounting portion and move relative to the first connecting portion along the axial direction of the connecting terminal to approach or move away from the first connecting portion.

15. The connecting terminal according to claim 12 or 13, characterized in that: The connecting member can rotate around the center line of the connecting member and move relative to the limiting portion along the axial direction of the connecting terminal to approach or move away from the limiting portion.

16. The connecting terminal according to claim 12 or 13, characterized in that: The first connecting portion includes an abutting section, a first bending section, a second bending section and a locking body; The abutting section can abut against the circuit board; One end of the first bending section is bent and connected to one end of the abutting section, and the other end of the first bending section is connected to the fixing portion; One end of the second bending section is bent and connected to the other end of the abutting section, and the other end of the second bending section is connected to the fixing portion; The abutting section, the first bending section and the second bending section cooperate to form an accommodating space; The locking body is connected to the abutting section, the locking body is located in the abutting section and the accommodating space, and the mounting portion passes through the locking body.

17. The connecting terminal according to claim 16, characterized in that: The locking body and the abutting section are an integrated structure, or the locking body and the abutting section are a split structure.

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