Rotary switch and power conversion device

Abstract

The invention provides a rotary switch and a power conversion device, and relates to the technical field of photovoltaic power generation. The device comprises a machine shell, a photovoltaic connector fixed on the side wall of the machine shell, a rotary switch, a power conversion circuit located in the machine shell and a wiring board. One end of the photovoltaic connector is electrically connected with the wiring board, and the other end is connected with the photovoltaic assembly. The rotary switch comprises a handle, an operating mechanism and a plurality of switch bodies, wherein the operating mechanism and the switch bodies are respectively fixed on the wiring board. The operating mechanism is detachably connected with the switch body closest to the operating mechanism. Each switch body comprises a shell, a moving contact, a first static contact and a second static contact, the moving contact, the first static contact and the second static contact are arranged in the shell, the moving contact rotates relative to the shell, and the first static contact and the second static contact are both fixed relative to the shell; each first static contact is electrically connected with the photovoltaic connector through the wiring board, and the second static contact is electrically connected with the power conversion circuit. According to the device, modular installation of the rotary switch can be realized, and assembly of the rotary switch and the wiring board in a height-limited scene is facilitated.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation technology, and in particular to a rotary switch and power conversion device. Background Technology

[0002] As the core power conversion device in a solar power generation system, the photovoltaic inverter plays a crucial role in converting the direct current (DC) generated by photovoltaic modules into alternating current (AC) for grid connection. Within the internal topology of the photovoltaic inverter, the rotary switch serves as the core actuator for circuit on / off control and operating mode switching, directly impacting system operational safety and maintenance efficiency.

[0003] Rotary switches typically consist of a handle, an operating mechanism, and a switch body. The handle is driven by the operating mechanism, which in turn is driven by the switch body. The handle drives the switch body via the operating mechanism to open or close the rotary switch. However, the operating mechanism of existing rotary switches is generally taller than the switch body and exceeds the allowable passage range of wave soldering furnaces, preventing the rotary switch from being automatically soldered along with the terminal block. This structural limitation necessitates the use of alternative soldering methods or modifications to wave soldering equipment, increasing the complexity and production cost of assembling the rotary switch and terminal block in height-restricted environments. Summary of the Invention

[0004] This application provides a rotary switch and a power conversion device. The rotary switch and the power conversion device including the rotary switch enable modular installation of the rotary switch, facilitating the assembly of the rotary switch and the terminal block in height-restricted environments.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] On one hand, this application provides a power conversion device, which includes a housing, a photovoltaic connector, a rotary switch, and a power conversion circuit and a terminal block located within the housing. The housing includes a side wall, the photovoltaic connector is fixed to the side wall, one end of the photovoltaic connector penetrates the side wall and extends into the housing to be electrically connected to the terminal block, and the other end of the photovoltaic connector is used to connect to a photovoltaic module. The rotary switch includes a handle, an operating mechanism, and multiple stacked switch bodies. The multiple stacked switch bodies are located on one side of the operating mechanism, and the multiple stacked switch bodies and the operating mechanism are respectively fixed to the terminal block. The operating mechanism is detachably connected to the switch body closest to the operating mechanism among the multiple stacked switch bodies.

[0007] Each of the multiple stacked switch bodies includes a housing and a moving contact, a first stationary contact, and a second stationary contact housed within the housing. The moving contact rotates relative to the housing, while the first and second stationary contacts are fixed relative to the housing. The first stationary contact of each switch body is connected to a terminal block and electrically connected to a photovoltaic connector via the terminal block. The second stationary contact of each switch body is electrically connected to a power conversion circuit. A handle is used to control the operating mechanism to rotate the moving contact of the switch body, causing the moving contact to separate from or make contact with the first and second stationary contacts.

[0008] The power conversion device provided in this application allows for a detachable connection between the operating mechanism and the switch body closest to the operating mechanism among multiple stacked switch bodies. When the operating mechanism is connected to this switch body, it can drive the moving contacts in the multiple switch bodies to rotate, thereby opening or closing the rotary switch. When the operating mechanism is separated from the switch body closest to the operating mechanism, the operating mechanism and the switch body will be separate modules. Thus, when the rotary switch of this application needs to be fixed to the terminal block, if the height of the rotary switch's operating mechanism exceeds the height limit of the space used for assembling the terminal block and the rotary switch, this application modularizes the operating mechanism and switch body (i.e., the operating mechanism and switch body can be separated into two independent modules). This allows multiple switch bodies to be fixed to the terminal block in space-constrained scenarios, and then the operating mechanism can be installed on one side of the switch body after leaving the space-constrained scenario, connecting the operating mechanism to the switch body closest to the operating mechanism among the multiple stacked switch bodies. The configuration method of this application can realize the assembly of rotary switches in highly restricted scenarios, reduce process complexity and production costs, and will not affect the normal opening and closing of the rotary switch (after the operating mechanism and the switch body closest to the operating mechanism among multiple stacked switch bodies are connected together, the handle drives the operating mechanism to move, and the operating mechanism can drive the moving contact of the switch body to rotate to realize opening and closing).

[0009] In some embodiments, the first stationary contact of each switch body is soldered to a terminal block.

[0010] This application improves assembly efficiency by welding the first stationary contact to the terminal block. During the assembly of the rotary switch and terminal block, the first stationary contact can be welded to the terminal block using wave soldering in a wave soldering oven. After leaving the oven, the operating mechanism is then installed on one side of the switch body. Since the operating mechanism is detachably connected to the switch body closest to it among multiple stacked switch bodies, this assembly method can achieve normal assembly even if the height of the operating mechanism exceeds the height limit of the wave soldering oven, without requiring other welding methods or modifications to the wave soldering equipment. This reduces process complexity and production costs. Furthermore, welding the first stationary contact to the terminal block reduces cable usage, improving the connection efficiency, reliability, and aesthetics of the rotary switch and terminal block.

[0011] In some embodiments, the operating mechanism includes an input shaft and an output shaft. The handle is fixedly connected to the input shaft, and the input shaft is drivenly connected to the output shaft. The input shaft can drive the output shaft to rotate. The output shaft is detachably connected to the moving contact of the switch body closest to the operating mechanism among a plurality of stacked switch bodies, and the rotation of the output shaft can drive the moving contact to rotate.

[0012] This application enables the output shaft of the operating mechanism to be detachably connected to the moving contact of the switch body. After the output shaft and the moving contact are connected and fixed together, the moving contact can be rotated by the output shaft to realize the opening or closing of the rotary switch. After the output shaft and the moving contact are separated, the operating mechanism including the output shaft and the switch body including the moving contact will be separated as two independent modules, which can facilitate the assembly of the rotary switch and the terminal block in scenarios with limited height space.

[0013] In some embodiments, the rotary switch further includes a connector located between the switch body and the operating mechanism, which are among a plurality of stacked switch bodies closest to the operating mechanism. One end of the connector is fixedly connected to a moving contact, and the other end of the connector has a first connecting portion. The end of the output shaft facing the switch body has a second connecting portion. One of the first connecting portion and the second connecting portion is a first groove, and the other is a first protrusion. The first groove is used for plugging and unplugging connection with the first protrusion in a direction perpendicular to the arrangement of the operating mechanism and the switch body. When the output shaft drives the second connecting portion to rotate, the second connecting portion can drive the first connecting portion to rotate, so that the first connecting portion drives the moving contact to rotate.

[0014] With the above-described configuration, when the first connecting part and the second connecting part are separated, the output shaft is disconnected from the moving contact, and the operating mechanism and the switch body are separated as independent modules. When the first connecting part and the second connecting part are inserted together, the output shaft and the moving contact are relatively fixed together by the connecting parts, and the rotation of the output shaft can drive the moving contact to rotate. The implementation provided by this application has a simple structure, facilitates the assembly of different modules of the rotary switch, and is also easy to manufacture.

[0015] In some embodiments, the cross-section of the first groove along the arrangement direction perpendicular to the operating mechanism and the switch body is a U-shaped groove; or, the cross-section of the first groove along the arrangement direction perpendicular to the operating mechanism and the switch body is a trapezoidal groove, and the radial dimension of the trapezoidal groove gradually decreases along the direction perpendicular to the terminal block.

[0016] The U-shaped groove and trapezoidal groove provided in this application are two possible structural forms of the first groove. The structures of the U-shaped groove and the trapezoidal groove are relatively simple and easier to manufacture. Using this structure to achieve plug-in connection with the first protrusion has high advantages in terms of processing difficulty and production cost.

[0017] In some embodiments, the operating mechanism has a first housing, with a portion of the input shaft and the output shaft rotatably connected within the first housing and a portion extending outside the first housing. The side of the first housing facing the switch body has a second protrusion. The rotary switch also includes a second housing, which is fixedly connected to the side of the switch body closest to the operating mechanism among a plurality of stacked switch bodies. The side of the second housing facing the operating mechanism has a second groove, which, along the insertion direction from the second connecting portion to the first connecting portion, is used for plugging and unplugging with the second protrusion. One end of the connector opposite to the moving contact passes through the second housing and extends into the second groove; the portion of the connector extending into the second groove has at least a first connecting portion.

[0018] This application provides a first housing with a second protrusion on it, and a second housing with a second groove on it. The second protrusion can be inserted into the second groove along the insertion direction from the second connecting part to the first connecting part. In this way, the cooperation between the second protrusion and the second groove, combined with the cooperation between the first connecting part and the second connecting part, can improve the reliability of the connection between the operating mechanism and the switch body.

[0019] In some embodiments, one of the side of the second housing facing the first housing and the side of the first housing facing the second housing has a guide member and the other has a guide groove; along the insertion direction from the second connection portion to the first connection portion, the guide groove is used for plugging and unplugging connection with the guide member.

[0020] By providing guide members and guide grooves, this application enables the guide members and guide grooves to play a guiding role when the first connecting part and the second connecting part are inserted and removed, as well as when the second protrusion and the second groove are inserted and removed, thus facilitating rapid insertion and removal.

[0021] In some embodiments, a portion of the first stationary contact is fixed inside the housing and another portion extends outside the housing. A third protrusion is fixedly connected to the outer wall of the second housing, the portion of the first stationary contact extending outside the housing and the third protrusion are located on the same side of the housing, and the third protrusion is used for fixed connection with the terminal block.

[0022] When this application includes a second housing, a third protrusion is also provided on the second housing. The third protrusion enables the second housing and the terminal block to form a stable anchor, thereby increasing the effective support area of ​​the rotary switch. When the rotary switch and the terminal block are assembled, if screws are required to fix the operating mechanism and the terminal block, the third protrusion, in conjunction with the terminal block, can resist the torque generated when tightening the screws. When the rotary switch is subjected to external vibration or impact, the third protrusion, in conjunction with the terminal block, can improve the rotary switch's anti-overturning ability and suppress displacement caused by torque. In other words, adding a third protrusion to the second housing can improve the mechanical stability of the rotary switch by increasing the constraint point, distributing the load, and expanding the support surface. This allows the power conversion device to resist the operating stress during the assembly process of the rotary switch and the terminal block (such as the torque generated when tightening the screws when the operating mechanism and the terminal block are required to be fixed with screws), and also suppress deformation caused by external dynamic environments (such as vibration or impact), ensuring the long-term reliability of the electrical connection between the terminal block and the rotary switch.

[0023] In some embodiments, the first housing has a through hole, the axis of which is parallel to the insertion direction from the second connector to the first connector. The power conversion device further includes a screw, the head of which contacts the first housing, and the shank of which passes through the through hole and is fixed to the terminal block.

[0024] This application provides a through hole in the first housing, through which screws can be inserted. In this way, the first housing and the terminal block can be fixed together by the cooperation of screws and nuts.

[0025] In some embodiments, the operating mechanism has a first housing, with a portion of the input shaft and the output shaft rotatably connected inside the first housing and the other portion extending outside the first housing. The first housing and the handle are located on opposite sides of the terminal block, and the portion of the input shaft extending outside the first housing passes through the terminal block and is fixedly connected to the handle.

[0026] With the above-described configuration, the first housing and the handle are distributed on opposite sides of the terminal block along the thickness direction, and the first housing and the switch body are distributed on the same side of the terminal block along the thickness direction perpendicular to the terminal block. This layout can reduce the size of the rotary switch along the thickness direction perpendicular to the terminal block, and facilitate the application of the rotary switch in scenarios where space is limited in the thickness direction perpendicular to the terminal block.

[0027] In some embodiments, the axial direction of the input shaft is perpendicular to the axial direction of the output shaft.

[0028] With the above configuration, the input shaft and output shaft are driven at 90°, which enables the rotary switch to be used in application scenarios where the size is limited along the arrangement direction of the operating mechanism and the switch body, thus meeting the application requirements of some special scenarios.

[0029] In some embodiments, along the arrangement direction of the operating mechanism and the switch body, partial switch bodies are provided on both opposite sides of the operating mechanism. The output shaft includes two sub-shafts, which are distributed on both radial sides of the input shaft. The switch body located on one side of the operating mechanism is driven to the input shaft through one of the sub-shafts, and the switch body located on the other side of the operating mechanism is driven to the input shaft through the other sub-shaft.

[0030] This application provides a portion of the switch body on both opposite sides of the operating mechanism and sets two sub-shafts. The two sub-shafts can drive the switch bodies on both sides of the operating mechanism to open or close the circuit, and the control of two sets of switch bodies can be achieved through one operating mechanism.

[0031] In some embodiments, a portion of the first stationary contact is fixed inside the housing and another portion extends outside the housing. At least two of the multiple switch bodies have a first connecting post on the outer wall of the housing. All the first connecting posts and the portions of the first stationary contact extending outside the housing are located on the same side of the housing. The first connecting posts are used to be inserted into the terminal block, and the portions of the first stationary contact extending outside the housing are used to be electrically connected to the terminal block.

[0032] This application provides first connecting posts on at least two housings and inserts the first connecting posts into the terminal block. In this way, before the first stationary contact is fixed to the terminal block to achieve electrical connection, at least two first connecting posts can cooperate with each other to pre-position the housing on the terminal block, which facilitates the subsequent fixing of the terminal block and the first stationary contact.

[0033] In some embodiments, a portion of the first stationary contact is fixed inside the housing and another portion extends outside the housing. The operating mechanism has a first housing, and at least two second connecting posts are provided on the outer wall surface of the first housing. The second connecting posts and the portion of the first stationary contact extending outside the housing are located on the same side of the first housing. The second connecting posts are used to be inserted into the terminal block, and the portion of the first stationary contact extending outside the housing is electrically connected to the terminal block.

[0034] This application provides at least two second connecting posts on the first housing and inserts the second connecting posts into the terminal block. In this way, when the first housing and the terminal block are fixedly connected by screws, the at least two second connecting posts can cooperate with each other to pre-position the first housing on the terminal block. This can prevent the first housing from shifting when the screws are tightened later, and facilitates the insertion and fixing of the screws.

[0035] On the other hand, this application provides a rotary switch, which includes a handle, an operating mechanism, and a plurality of stacked switch bodies. The stacked switch bodies are located on one side of the operating mechanism, and the operating mechanism is detachably connected to the switch body closest to the operating mechanism among the stacked switch bodies. Each of the stacked switch bodies includes a housing and a moving contact, a first stationary contact, and a second stationary contact housed within the housing. The moving contact rotates relative to the housing, while the first and second stationary contacts are fixed relative to the housing. The handle is used to control the operating mechanism to rotate the moving contact of the switch body, so that the moving contact separates from or contacts the first and second stationary contacts.

[0036] This application detachably connects the operating mechanism to the switch body closest to the operating mechanism among multiple stacked switch bodies. When connected, the operating mechanism drives the moving contacts in multiple switch bodies to rotate, thus opening or closing the rotary switch. When separated, the operating mechanism and switch body function as two independent modules. When the rotary switch needs to be fixed to the terminal block of a power conversion device, if the height of the operating mechanism exceeds the height limit of the space for assembling the terminal block and rotary switch, this application, due to the modular design of the operating mechanism and switch body, allows multiple switch bodies to be fixed to the terminal block in space-constrained environments. The operating mechanism can then be installed on one side of the switch body after leaving the space-constrained environment. This configuration enables the assembly of the rotary switch in height-constrained environments, reducing process complexity and production costs.

[0037] In some embodiments, the first stationary contact of each switch body is soldered to the terminal block of the power conversion device.

[0038] This application improves assembly efficiency by welding the first stationary contact to the terminal block of the power conversion device. During assembly, the first stationary contact can be welded to the terminal block using wave soldering in a wave soldering oven. After leaving the oven, the operating mechanism is installed on one side of the switch body. Since the operating mechanism is detachably connected to the switch body closest to it among multiple stacked switch bodies, this assembly method allows for normal assembly even if the height of the operating mechanism exceeds the height limit of the wave soldering oven, without requiring other welding methods or modifications to the wave soldering equipment. This reduces process complexity and production costs. Furthermore, welding the first stationary contact to the terminal block reduces cable usage, improving the connection efficiency, reliability, and aesthetics of the rotary switch and terminal block.

[0039] In some embodiments, the operating mechanism includes an input shaft and an output shaft. The handle is fixedly connected to the input shaft, and the input shaft is drivenly connected to the output shaft. The input shaft can drive the output shaft to rotate. The output shaft is detachably connected to the moving contact, and the rotation of the output shaft can drive the moving contact to rotate.

[0040] This application enables the output shaft of the operating mechanism to be detachably connected to the moving contact of the switch body. After the output shaft and the moving contact are connected and fixed together, the moving contact can be rotated by the output shaft to realize the opening or closing of the rotary switch. After the output shaft and the moving contact are separated, the operating mechanism including the output shaft and the switch body including the moving contact will be separated as two independent modules, which can facilitate the assembly of the rotary switch and the terminal block of the power conversion device in scenarios with limited height space.

[0041] In some embodiments, the rotary switch further includes a connector located between the switch body and the operating mechanism, which are among a plurality of stacked switch bodies closest to the operating mechanism. One end of the connector is fixedly connected to a moving contact, and the other end of the connector has a first connecting portion. The end of the output shaft facing the switch body has a second connecting portion. One of the first connecting portion and the second connecting portion is a first groove, and the other is a first protrusion. The first groove is used for plugging and unplugging connection with the first protrusion in a direction perpendicular to the arrangement of the operating mechanism and the switch body. When the output shaft drives the second connecting portion to rotate, the second connecting portion can drive the first connecting portion to rotate, so that the first connecting portion drives the moving contact to rotate.

[0042] The rotary switch of this application, through the above-described configuration, allows the output shaft to disconnect from the moving contact when the first connecting part and the second connecting part are separated, thus separating the operating mechanism and the switch body as independent modules. When the first connecting part and the second connecting part are inserted together, the output shaft and the moving contact are relatively fixed by the connecting parts, and the rotation of the output shaft can drive the moving contact to rotate. The implementation provided by this application has a simple structure, facilitates the assembly of different modules of the rotary switch, and is also easy to manufacture.

[0043] In some embodiments, the cross-section of the first groove along the arrangement direction perpendicular to the operating mechanism and the switch body is a U-shaped groove; or, the cross-section of the first groove along the arrangement direction perpendicular to the operating mechanism and the switch body is a trapezoidal groove, and the radial dimension of the trapezoidal groove gradually decreases along the direction perpendicular to the terminal block.

[0044] The U-shaped groove and trapezoidal groove of this application are two possible structural forms of the first groove. The structures of the U-shaped groove and the trapezoidal groove are relatively simple and easier to manufacture. Using this structure to achieve plug-in connection with the first protrusion has high advantages in terms of processing difficulty and production cost.

[0045] In some embodiments, the operating mechanism has a first housing, with a portion of the input shaft and the output shaft rotatably connected within the first housing and a portion extending outside the first housing. The side of the first housing facing the switch body has a second protrusion. The rotary switch also includes a second housing, which is fixedly connected to the side of the switch body closest to the operating mechanism among a plurality of stacked switch bodies. The side of the second housing facing the operating mechanism has a second groove, which, along the insertion direction from the second connecting portion to the first connecting portion, is used for plugging and unplugging with the second protrusion. One end of the connector opposite to the moving contact passes through the second housing and extends into the second groove; the portion of the connector extending into the second groove has at least a first connecting portion.

[0046] This application provides a first housing with a second protrusion on it, and a second housing with a second groove on it. The second protrusion can be inserted into the second groove along the insertion direction from the second connecting part to the first connecting part. In this way, the cooperation between the second protrusion and the second groove, combined with the cooperation between the first connecting part and the second connecting part, can improve the reliability of the connection between the operating mechanism and the switch body.

[0047] In some embodiments, one of the side of the second housing facing the first housing and the side of the first housing facing the second housing has a guide member and the other has a guide groove; along the insertion direction from the second connection portion to the first connection portion, the guide groove is used for plugging and unplugging connection with the guide member.

[0048] By providing guide members and guide grooves, this application enables the guide members and guide grooves to play a guiding role when the first connecting part and the second connecting part are inserted and removed, as well as when the second protrusion and the second groove are inserted and removed, thus facilitating rapid insertion and removal.

[0049] In some embodiments, a portion of the first stationary contact is fixed inside the housing and another portion extends outside the housing. A third protrusion is fixedly connected to the outer wall of the second housing. The portion of the first stationary contact extending outside the housing and the third protrusion are located on the same side of the housing. The third protrusion is used for fixed connection with the terminal block of the power conversion device.

[0050] Through the aforementioned configuration, the second housing can achieve a stable anchoring with the terminal block via the third protrusion, increasing the effective support area of ​​the rotary switch when it is fixed to the terminal block. When the rotary switch is assembled with the terminal block, if screws are required to fix the operating mechanism to the terminal block, the third protrusion, in conjunction with the terminal block, can resist the torque generated when tightening the screws. When the rotary switch is subjected to external vibration or impact, the third protrusion, in conjunction with the terminal block, can enhance the rotary switch's anti-overturning capability and suppress displacement caused by torque. In other words, adding a third protrusion to the second housing can improve the mechanical stability of the rotary switch by increasing constraint points, distributing loads, and expanding the support surface. This allows the rotary switch to withstand the operational stress during assembly with the terminal block (such as the torque generated when tightening screws to fix the operating mechanism to the terminal block) and suppress deformation caused by external dynamic environments (such as vibration or impact), ensuring the long-term reliability of the electrical connection between the terminal block and the rotary switch.

[0051] In some embodiments, the first housing has a through hole, the axis of which is parallel to the insertion direction from the second connection portion to the first connection portion. By providing a through hole in the first housing, a screw can be inserted through this hole. Thus, when the rotary switch needs to be assembled onto the terminal block, the first housing can be fixed to the terminal block of the power conversion device using the cooperation of screws and nuts.

[0052] In some embodiments, the axial direction of the input shaft is perpendicular to the axial direction of the output shaft.

[0053] With the above configuration, the input shaft and output shaft are driven at 90°, which enables the rotary switch to be used in application scenarios where the size is limited along the arrangement direction of the operating mechanism and the switch body, and can meet the application requirements of rotary switches in some special scenarios.

[0054] In some embodiments, along the arrangement direction of the operating mechanism and the switch body, partial switch bodies are provided on both opposite sides of the operating mechanism. The output shaft includes two sub-shafts, which are distributed on both radial sides of the input shaft. The switch body located on one side of the operating mechanism is driven to the input shaft through one of the sub-shafts, and the switch body located on the other side of the operating mechanism is driven to the input shaft through the other sub-shaft.

[0055] This application provides a portion of the switch body on both opposite sides of the operating mechanism and sets two sub-shafts. The two sub-shafts can drive the switch bodies on both sides of the operating mechanism to open or close the circuit, and the opening and closing control of two sets of switch bodies can be realized through one operating mechanism.

[0056] In some embodiments, a portion of the first stationary contact is fixed inside the housing and another portion extends outside the housing. At least two of the multiple switch bodies have a first connecting post on the outer wall of the housing. All the first connecting posts and the portions of the first stationary contact extending outside the housing are located on the same side of the housing. The first connecting posts are used to be inserted into the terminal block, and the portions of the first stationary contact extending outside the housing are used to be electrically connected to the terminal block.

[0057] This application provides first connecting posts on at least two housings, which are used to insert into a terminal block. In this way, before the first stationary contact is used to fix it to the terminal block to achieve electrical connection, at least two first connecting posts can cooperate with each other to pre-position the housing on the terminal block, which facilitates the fixing of the first stationary contact to the terminal block.

[0058] In some embodiments, a portion of the first stationary contact is fixed inside the housing and another portion extends outside the housing. The operating mechanism has a first housing, and at least two second connecting posts are provided on the outer wall of the first housing. The second connecting posts and the portion of the first stationary contact extending outside the housing are located on the same side of the first housing. The second connecting posts are used to be inserted into the terminal block, and the portion of the first stationary contact extending outside the housing is used to be electrically connected to the terminal block.

[0059] This application provides at least two second connecting posts on the first housing, which are used to insert into the terminal block. In this way, when the first housing is fixedly connected to the terminal block by screws, the at least two second connecting posts can cooperate with each other to pre-position the first housing on the terminal block. This prevents the first housing from shifting when the screws are tightened later, and facilitates the insertion and fixing of the screws. Attached Figure Description

[0060] Figure 1 This is a network diagram of a photovoltaic power supply system provided in an embodiment of this application;

[0061] Figure 2This is one of the structural schematic diagrams of the power conversion device provided in the embodiments of this application;

[0062] Figure 3 This is a second schematic diagram of the power conversion device provided in the embodiments of this application;

[0063] Figure 4 One of the schematic diagrams of the rotary switch provided in this application embodiment after removing the handle and operating mechanism;

[0064] Figure 5 This is one of the structural schematic diagrams of the operating mechanism provided in the embodiments of this application;

[0065] Figure 6 A second schematic diagram of the rotary switch provided in this application embodiment after removing the handle and operating mechanism;

[0066] Figure 7 This is the second schematic diagram of the structure of the operating mechanism provided in the embodiments of this application;

[0067] Figure 8 This is one of the structural schematic diagrams of the rotary switch provided in the embodiments of this application;

[0068] Figure 9 A schematic diagram of the rotary switch provided in this application, after the handle is removed and mounted on a terminal block;

[0069] Figure 10 This is one of the schematic diagrams illustrating the installation process of the rotary switch and terminal block provided in the embodiments of this application;

[0070] Figure 11 This is the second schematic diagram of the installation process of the rotary switch and terminal block provided in the embodiments of this application;

[0071] Figure 12 This is the third schematic diagram of the installation process of the rotary switch and terminal block provided in the embodiments of this application;

[0072] Figure 13 This is the fourth schematic diagram illustrating the installation process of the rotary switch and terminal block provided in the embodiments of this application.

[0073] Figure 14 This is a second schematic diagram of the rotary switch provided in an embodiment of this application.

[0074] Figure label:

[0075] 01-Photovoltaic power supply system; 1000-Power conversion device; 2000-Photovoltaic module;

[0076] 100-Rotary switch;

[0077] 10-Handle;

[0078] 20-Operating mechanism; 21-Input shaft; 22-Output shaft; 221-Second connecting part; 23-First housing; 231-Second protrusion; 232-Guide; 233-Through hole; 234-Second connecting post;

[0079] 30 - Switch body; 311 - First stationary contact; 312 - Second stationary contact; 32 - Housing; 321 - First connecting post; 33 - First switch body;

[0080] 40 - Trip unit;

[0081] 50 - Connector; 51 - First connecting part;

[0082] 61 - First groove; 62 - First protrusion;

[0083] 70 - Second housing; 71 - Second groove; 72 - Guide groove; 73 - Third protrusion;

[0084] 80-screw;

[0085] a-First direction;

[0086] 200 - Photovoltaic connector; 300 - Controller; 400 - Terminal block; 500 - Housing. Detailed Implementation

[0087] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0088] The terms "first," "second," and similar terms used in this article do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "one" or similar terms do not indicate a quantity limitation, but rather indicate the existence of at least one.

[0089] In the embodiments of this application, the terms "example" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "example" or "for example" is intended to present the relevant concepts in a specific manner. In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0090] Figure 1 For a network diagram of the photovoltaic power supply system 01 provided in the embodiments of this application, please refer to... Figure 1 The photovoltaic power supply system 01 includes a power conversion device 1000 and photovoltaic modules 2000. The power conversion device 1000 converts direct current (DC) from the photovoltaic modules 2000 into alternating current (AC) and transmits the AC to the grid. For example, the power conversion device 1000 includes multiple photovoltaic connectors 200, a DC switch, a power conversion circuit, DC buses BUS+ and BUS-, a grid-connected switch, and a controller 300. The power conversion circuit includes a DC / DC circuit and a DC / AC circuit. In some applications, the photovoltaic modules 2000 are connected to the photovoltaic connectors 200 to transmit DC to the DC / DC circuit via the DC switch. The DC / DC circuit then transforms the DC to AC and transmits it to the grid or load via the DC bus.

[0091] For example, the DC switch and the grid-connected switch can each be a rotary switch, or the DC switch can be a rotary switch and the grid-connected switch can be a relay. Figure 2 This is one of the structural schematic diagrams of the power conversion device 1000 provided in the embodiments of this application. Figure 2 The DC switch of the medium power converter 1000 is a rotary switch 100. Please refer to the reference. Figure 1 and Figure 2 As shown, the rotary switch 100 includes a handle 10, an operating mechanism 20, multiple stacked switch bodies 30, and a trip unit 40. The multiple stacked switch bodies 30 are located on one side of the operating mechanism 20. Each switch body 30 includes a housing 32 and a moving contact (not shown), a first stationary contact 311, and a second stationary contact 312 housed within the housing 32. The moving contact rotates relative to the housing 32, while the first stationary contact 311 and the second stationary contact 312 are respectively fixed relative to the housing 32. The first stationary contact 311 of each switch body 30 is used to connect one or more parallel photovoltaic strings, where each photovoltaic string includes multiple photovoltaic modules 2000 connected in series. The second stationary contact 312 of each switch body 30 is used to connect a power conversion circuit.

[0092] The handle 10 drives the operating mechanism 20, which in turn drives the moving contact of the switch body 30. When the moving contact contacts the first stationary contact 311 and the second stationary contact 312 respectively, the rotary switch 100 closes. When the moving contact disengages from the first stationary contact 311 and the second stationary contact 312 respectively, the rotary switch 100 opens. The trip unit 40 receives the trip signal from the controller 300. When an abnormality occurs in the current flowing through the switch body 30, the trip unit 40 receives the trip signal from the controller 300 and causes the switch body 30 of the rotary switch 100 to open. For example, when the current flowing through at least one switch body 30 of the rotary switch 100 exceeds a set threshold, or when the current flowing through at least one switch body 30 of the rotary switch 100 is a reverse current, the controller 300 sends a trip signal to the trip unit 40, thereby causing the trip unit 40 to release the corresponding linkage structure in a timely manner. The linkage structure is used to drive the transmission structure inside the operating mechanism 20 to move. The transmission structure can drive the moving contact of the switch body 30 to move, so that the switch body 30 is disconnected.

[0093] In some applications, multiple switch bodies 30 are linked together so that they can close or open simultaneously. That is, the operating mechanism 20 can simultaneously drive the moving contacts of all switch bodies 30 to rotate, so that the multiple switch bodies 30 open or close synchronously.

[0094] Furthermore, the power conversion device 1000 in this application can be either a photovoltaic inverter or a power conversion system (PCS). Unlike a photovoltaic inverter, the photovoltaic connector 200 of the power conversion system can be connected not only to the photovoltaic module 2000 but also to the energy storage battery. Therefore, the power conversion system can not only convert DC power from the photovoltaic module 2000 or the energy storage battery into AC power, but also rectify AC power from the grid into DC power to charge the energy storage, thereby improving the energy utilization efficiency of the power supply system. The following explanation uses a photovoltaic inverter as an example of the power conversion device 1000.

[0095] For example, the power conversion device 1000 also includes a terminal block 400, to which the rotary switch 100 is fixed and electrically connected. One end of the photovoltaic connector 200 is electrically connected to the terminal block 400, and the other end is used to connect to the photovoltaic module 2000. A plurality of stacked switch bodies 30 and operating mechanisms 20 in the rotary switch 100 are respectively fixed to the terminal block 400. At least a portion of the operating mechanism 20 of the rotary switch 100 and the switch body 30 are located on the same side of the terminal block 400. A first stationary contact 311 of each switch body 30 is connected to the terminal block 400 and electrically connected to the photovoltaic connector 200 via the terminal block 400. A second stationary contact 312 of each switch body 30 is electrically connected to the power conversion circuit. For example, the first stationary contact 311 of the switch body 30 is soldered to the terminal block 400.

[0096] In some embodiments, the terminal block 400 is provided with conductive through holes, and the first stationary contact 311 of the switch body 30 is inserted into the corresponding conductive through hole. Then, the first stationary contact 311 is welded to the terminal block 400 by wave soldering. After the first stationary contact 311 and the terminal block 400 are welded, the first stationary contact 311 can be electrically connected to the internal wiring of the terminal block 400 through the conductive through hole. In this way, the electrical signal flowing through the rotary switch 100 can be interconnected with the electrical signal flowing through the terminal block 400.

[0097] This application arranges at least a portion of the operating mechanism 20 and the switch body 30 on the same side of the terminal block 400. When installing the rotary switch 100 onto the terminal block 400, the operating mechanism 20 and the switch body 30 can be installed on the same side of the terminal block 400, which facilitates the assembly of the rotary switch 100 and the terminal block 400. By fixing the first stationary contact 311 of the switch body 30 to the terminal block 400, the use of cables can be reduced, thereby improving the connection efficiency, connection reliability, and aesthetic appearance of the rotary switch 100 and the terminal block 400 to a certain extent.

[0098] For example, Figure 5 This is one of the structural schematic diagrams of the operating mechanism 20 provided in the embodiments of this application, in conjunction with reference to... Figure 2 and Figure 5 As shown, the operating mechanism 20 includes a first housing 23, an input shaft 21, and an output shaft 22. Both the input shaft 21 and the output shaft 22 are partially rotatably connected inside the first housing 23 and partially extend outside the first housing 23. One end of the input shaft 21 is fixedly connected to the handle 10, and the other end of the input shaft 21 is used to drive the output shaft 22 to rotate. The output shaft 22 is used to drive the moving contact to rotate. That is, when the user drives the handle 10 to rotate, the handle 10 can drive the input shaft 21 to rotate, the input shaft 21 can drive the output shaft 22 to rotate, and the output shaft 22 can drive the moving contact to rotate, thereby causing the moving contact to open or close with the stationary contact 31.

[0099] In addition to the first housing 23, input shaft 21, and output shaft 22, the operating mechanism 20 may also include a transmission structure, which is connected between the output shaft 22 and the input shaft 21. When the user drives the handle 10 to rotate, the handle 10 drives the input shaft 21 to rotate, which in turn drives the transmission structure to rotate, causing the transmission structure to rotate the output shaft 22. The output shaft 22 then drives the moving contact to rotate, causing the moving contact to open or close the circuit with the stationary contact 31. The specific structure of the transmission structure is not limited in this application; it can consist of multiple connecting rods or a combination of connecting rods and gears.

[0100] In some embodiments, such as Figure 2 As shown, the first housing 23 and the handle 10 are located on opposite sides of the terminal block 400. The portion of the input shaft 21 extending beyond the first housing 23 passes through the terminal block 400 and is fixedly connected to the handle 10. With this arrangement, the first housing 23 and the handle 10 are distributed on opposite sides of the terminal block 400 along the thickness direction of the terminal block 400, and the first housing 23 and multiple switch bodies 30 are distributed on the same side of the terminal block 400 along the direction perpendicular to the thickness direction of the terminal block 400. This layout can reduce the size of the rotary switch 100 along the direction perpendicular to the thickness direction of the terminal block 400, and facilitate the application of the rotary switch 100 in scenarios where space is limited in the direction perpendicular to the thickness direction of the terminal block 400.

[0101] In addition, the power conversion device 1000 of this application also includes a housing 500, with a portion of the rotary switch 100 and a terminal block 400 disposed within the housing 500. For example, the switch body 30 and operating mechanism 20 of the rotary switch 100 are disposed within the housing 500, while the handle 10 of the rotary switch 100 is located outside the housing 500. By placing the handle 10 outside the housing 500, it is easier for the user to operate the rotary switch 100, and the housing 500 does not need to be opened when the rotary switch 100 needs to be operated, which helps improve the sealing performance of the power conversion device 1000.

[0102] Please continue to refer to Figure 2For example, the housing 500 includes a sidewall to which the photovoltaic connector 200 of the power conversion device 1000 is fixed. One end of the photovoltaic connector 200 passes through the sidewall and extends into the housing 500, where it is electrically connected to the terminal block 400. The other end of the photovoltaic connector 200 is connected to the photovoltaic module 2000. The photovoltaic connector 200 is electrically connected to the first stationary contact 311 via the wiring of the terminal block 400. That is, both the photovoltaic connector 200 and the first stationary contact 311 are electrically connected to the wiring of the terminal block 400. This allows for an electrical connection between the photovoltaic connector 200 and the first stationary contact 311 via the wiring of the terminal block 400, reducing the use of cables, simplifying the connection between the photovoltaic connector 200 and the first stationary contact 311, and making the wiring of the power conversion device 1000 neater.

[0103] To facilitate electrical connection between the photovoltaic connector 200 and the photovoltaic module 2000 located outside the housing 500, the photovoltaic connector 200 and the switch body 30 are distributed on opposite sides of the terminal block 400, with a portion of the photovoltaic connector 200 located outside the housing 500 and another portion located inside the housing 500. For example, the photovoltaic connector 200 is soldered to the side of the terminal block 400 opposite to the switch body 30.

[0104] Figure 3 This is a second schematic diagram of the power conversion device 1000 provided in the embodiments of this application, in conjunction with reference to... Figure 2 and Figure 3 As shown, for example, when the switch body 30 of the power conversion device 1000 and the photovoltaic connector 200 are located on different sides of the terminal block 400, the rotary switch 100 and the photovoltaic connector 200 can also be misaligned. That is, the projections of the rotary switch 100 and the photovoltaic connector 200 on the terminal block 400 are completely or partially misaligned. For example, the projection of the mounting area of ​​the photovoltaic connector 200 on the terminal block 400 is... Figure 3 The dashed area in the text.

[0105] In some embodiments, the height of the operating mechanism 20 of the rotary switch 100 exceeds the allowable passage range of the wave soldering furnace, preventing the rotary switch 100 from entering the furnace with the terminal block 400 for automated welding. This necessitates the use of other welding methods or modifications to the wave soldering equipment during production, increasing process complexity and production costs. To address this issue, this application proposes a rotary switch 100 that can solve the problem. This rotary switch 100 allows for modular installation, facilitating welding between the rotary switch 100 and the terminal block 400. Furthermore, this rotary switch 100 can be applied to the power conversion device 1000 mentioned earlier; for example, both the DC switch and the grid-connected switch mentioned earlier can utilize the rotary switch 100 proposed in this application.

[0106] The specific structure of the rotary switch 100 will be described and explained below. It should be understood that the rotary switch 100 provided in this application can be applied not only to the power conversion device 1000 mentioned above, but also to other scenarios, such as whole-house intelligent systems. This application does not limit the application scenarios of the rotary switch 100.

[0107] Please refer to the reference. Figure 2 and Figure 5 The rotary switch 100 includes a handle 10, an operating mechanism 20, and multiple stacked switch bodies 30, which are located on one side of the operating mechanism 20. Each of the stacked switch bodies 30 includes a housing 32 and a moving contact, a first stationary contact 311, and a second stationary contact 312 housed within the housing 32. The moving contact rotates relative to the housing 32, while the first stationary contact 311 and the second stationary contact 312 are fixed relative to the housing 32. The handle 10 controls the operation of the operating mechanism 20, which rotates the moving contact of the switch body 30 to separate or contact the moving contact with the first stationary contact 311 and the second stationary contact 312.

[0108] To avoid repetition, the same parts of the handle 10, operating mechanism 20 and multiple switch bodies 30 as those described above in the power conversion device 1000 will not be repeated below. Please refer to the previous description for relevant features.

[0109] For example, the operating mechanism 20 is detachably connected to the switch body 30 closest to the operating mechanism 20 among the multiple stacked switch bodies 30; that is, the operating mechanism 20 is detachably connected to one of the switch bodies 30 adjacent to it. For instance, the moving contact of the switch body 30 adjacent to the operating mechanism 20 is detachably connected to the output shaft 22 of the operating mechanism 20. For ease of description and understanding, the switch body 30 closest to the operating mechanism 20 among the multiple stacked switch bodies 30 will be referred to as the first switch body 33 below.

[0110] For example, the aforementioned detachable connection includes snap-fit ​​connection, plug-in connection with groove and protrusion, or connection by screw, etc. As long as the operating mechanism is connected to the first switch body 33, the rotation of the operating mechanism 20 can drive the moving contact of the switch body 30 to rotate; after the operating mechanism 20 and the switch body 30 are separated, the operating mechanism 20 and the switch body 30 can be separated as two independent modules.

[0111] This application enables the operating mechanism 20 to be detachably connected to the first switch body 33. After the operating mechanism 20 and the first switch body 33 are fixed together, the operating mechanism 20 can drive the moving contact of the switch body 30 to rotate, thereby realizing the opening or closing of the rotary switch 100. After the operating mechanism 20 is separated from the moving contact of the first switch body 33, the operating mechanism 20 and the switch body 30 will be separated as two independent modules. Thus, when it is necessary to fix the rotary switch 100 of this application together with the terminal block 400 of the power conversion device 1000, if the height of the operating mechanism 20 of the rotary switch 100 is higher than the height limit of the space for assembling the terminal block 400 and the rotary switch 100, this application can modularize the operating mechanism 20 and the switch body 30 (i.e., the operating mechanism 20 and the switch body 30 can be separated to form two independent modules). In scenarios where the assembly space is limited, multiple switch bodies 30 can be fixed to the terminal block 400 first, and then after leaving the scenario where the assembly space is limited, the operating mechanism 20 can be installed on the side of the outermost switch body 30 among the multiple switch bodies 30, so that the operating mechanism 20 and the first switch body 33 are connected together. The configuration of this application can enable the rotary switch 100 to be assembled in highly restricted environments, reducing process complexity and production costs, without affecting the normal opening and closing of the rotary switch 100 (after the operating mechanism 20 and the first switch body 33 are connected together, the handle 10 drives the operating mechanism 20 to move, and the operating mechanism 20 can drive the moving contact of the switch body 30 to rotate to achieve opening and closing).

[0112] The detachable connection between the operating mechanism 20 and the first switch body 33 can be achieved by directly detaching the operating mechanism 20 and the first switch body 33, or by detachably connecting the operating mechanism 20 to other components, thereby achieving a detachable connection with the first switch body 33.

[0113] In some embodiments, the first stationary contact 311 of each switch body 30 is soldered to the terminal block 400.

[0114] This application improves the assembly efficiency of the rotary switch 100 and the terminal block 400 by welding the first stationary contact 311 to the terminal block 400 during the assembly of the rotary switch 100 and the terminal block 400. The first stationary contact 311 can be welded to the terminal block 400 using a wave soldering process in the soldering oven of a wave soldering machine. After leaving the soldering oven, the operating mechanism 20 is installed on one side of the outermost switch body 30. Since the operating mechanism 20 is detachably connected to the first switch body 33, this assembly method can achieve normal assembly even if the height of the operating mechanism exceeds the height limit of the soldering oven, without requiring other welding methods or modifications to the wave soldering equipment, thus reducing process complexity and production costs. Furthermore, welding the first stationary contact 311 to the terminal block 400 reduces the use of cables, thereby improving the connection efficiency, reliability, and aesthetics of the rotary switch 100 and the terminal block 400.

[0115] Of course, the welding of the first stationary contact 311 of each switch body 30 to the terminal block 400 is merely an example and should not be considered a limitation of this application. For example, in some embodiments, the first stationary contact 311 of each switch body 30 is fixed to the terminal block 400 via a saddle terminal.

[0116] In some embodiments, the operating mechanism 20 includes an input shaft 21 and an output shaft 22. The handle 10 is fixedly connected to the input shaft 21, and the input shaft 21 is driveably connected to the output shaft 22. The input shaft 21 can drive the output shaft 22 to rotate. The output shaft 22 is detachably connected to the moving contact of the first switch body 33, and the rotation of the output shaft 22 can drive the moving contact to rotate.

[0117] Similar to the rotary switch 100 in the power conversion device 1000 described above, the operating mechanism 20 of the rotary switch 100 of this application, in addition to including an input shaft 21 and an output shaft 22, also includes a transmission structure. The transmission structure is located between the output shaft 22 and the input shaft 21. The handle 10 drives the input shaft 21 to rotate, and the input shaft 21 drives the transmission structure to move, thereby causing the transmission structure to drive the output shaft 22 to rotate.

[0118] This application enables the output shaft 22 of the operating mechanism 20 to be detachably connected to the moving contact of the first switch body 33. After the output shaft and the moving contact of the first switch body 33 are connected together, the output shaft can drive the moving contact of the first switch body 33 to rotate, thereby realizing the opening or closing of the rotary switch. After the output shaft is separated from the moving contact of the first switch body 33, the operating mechanism and the first switch body 33 will be separated as two independent modules, which can facilitate the assembly of the rotary switch and the terminal block in scenarios where height space is limited.

[0119] The detachable connection between the output shaft 22 and the moving contact of the first switch body 33 can be achieved by the output shaft 22 being directly detachably connected to the moving contact of the first switch body 33, or by the output shaft 22 being detachably connected to other components to achieve the detachable connection with the moving contact of the first switch body 33.

[0120] Figure 4 This is one of the structural diagrams of the rotary switch 100 provided in this application embodiment after removing the handle 10 and the operating mechanism 20. Please refer to the attached diagram. Figure 4 and Figure 5 As shown, in some embodiments, the rotary switch 100 further includes a connector 50 located between the first switch body 33 and the operating mechanism 20. One end of the connector 50 is fixedly connected to the moving contact, the other end of the connector 50 has a first connecting portion 51, and the end of the output shaft 22 facing the switch body 30 has a second connecting portion 221.

[0121] One of the first connecting part 51 and the second connecting part 221 is a first groove 61 and the other is a first protrusion 62. The first groove 61 is used to plug and unplug into the first protrusion 62 in a direction perpendicular to the arrangement of the operating mechanism 20 and the switch body 30. When the output shaft 22 drives the second connecting part 221 to rotate, the second connecting part 221 can drive the first connecting part 51 to rotate, so that the first connecting part 51 drives the moving contact to rotate.

[0122] That is, in this embodiment, the output shaft 22 is detachably connected to the connector 50, and the connector 50 is fixed to the moving contact, thereby achieving an indirect detachable connection between the output shaft 22 and the moving contact. When the output shaft 22 and the connector 50 are separated, the output shaft 22 is simultaneously disconnected from the moving contact, and the output shaft 22 is also separated from the moving contact.

[0123] The detachable connection between the connector 50 and the output shaft 22 is achieved by providing a first connecting portion 51 at one end of the connector 50 and a second connecting portion 221 at one end of the output shaft 22. The first connecting portion 51 can be a groove feature on the connector 50 (i.e., such as...). Figure 4 As shown, a first groove 61 is provided on the connector 50 (the first groove 61 serves as the first connecting portion 51 of the connector 50), or it can be a protrusion feature on the connector 50. Similarly, the second connecting portion 221 can be a groove feature on the output shaft 22, or it can be a protrusion feature on the connector 50 (i.e., as shown). Figure 5 As shown, a first protrusion 62 is provided on the output shaft 22, and the first protrusion 62 serves as the second connecting part 221 of the output shaft 22. Figure 4 and Figure 5The example given is that the connector 50 has a first groove 61 and the output shaft 22 has a first protrusion 62. It should be understood that the first groove 61 and the first protrusion 62 are interchangeable (i.e., the output shaft 22 has a first groove 61 and the connector 50 has a first protrusion 62).

[0124] The first groove 61 can be obtained by cutting a groove in the output shaft 22 or the connector 50, and the first protrusion 62 can be a part of the output shaft 22 or the connector 50 (that is, a part of the output shaft 22 or the connector 50 is used as the first protrusion 62).

[0125] The first groove 61 can be plugged and unplugged into the first protrusion 62 in a direction perpendicular to the arrangement of the operating mechanism 20 and the switch body 30. When the first groove 61 and the first protrusion 62 are plugged together, the output shaft 22 drives the second connecting part 221 to rotate, and the second connecting part 221 can drive the first connecting part 51 to rotate, so that the first connecting part 51 drives the moving contact to rotate, thereby realizing the opening or closing of the circuit breaker.

[0126] This application provides a connector 50 with a first connecting portion 51 and a second connecting portion 221 on the output shaft 22. One of the first connecting portion 51 and the second connecting portion 221 is a first groove 61, and the other is a first protrusion 62. The first groove 61 and the first protrusion 62 can be plugged and unplugged in a direction perpendicular to the arrangement of the operating mechanism 20 and the switch body 30. Thus, when the first connecting portion 51 and the second connecting portion 221 are separated, the moving contact of the output shaft 22 is disconnected from the moving contact of the first switch body 33, and the operating mechanism 20 and the first switch body 33 are separated as independent modules. When the first connecting portion 51 and the second connecting portion 221 are plugged together, the moving contact of the output shaft 22 and the first switch body 33 is relatively fixed together by the connector 50, and rotation of the output shaft 22 can drive the moving contact to rotate. This implementation provided by this application has a simple structure, facilitates the assembly of different modules of the rotary switch 100, and is also convenient for manufacturing.

[0127] When one of the first connecting part 51 and the second connecting part 221 is a first groove 61 and the other is a first protrusion 62, the first groove 61 can take any of the following forms, and correspondingly, the first protrusion 62 is adapted to the structural form of the first groove 61.

[0128] (1) The first structural form of the first groove 61: such as Figure 4 As shown, where, Figure 5 The output shaft 22 of the operating mechanism 20 and Figure 4 The connector 50 is shape-fitted; please refer to the reference. Figure 4 and Figure 5The first groove 61 has a U-shaped cross-section along the arrangement direction perpendicular to the operating mechanism 20 and the switch body 30.

[0129] The U-shaped groove can be a standard U-shaped groove (i.e., the inner wall of the U-shaped groove includes two opposing planes and an arc surface connecting the two planes) or an approximate U-shaped groove (e.g., the inner wall of the U-shaped groove includes two opposing planes and a connecting surface that is planar and connects the two planes).

[0130] Regardless of whether a standard U-shaped groove or an approximate U-shaped groove is used in this application, since the inner wall surface of the U-shaped groove includes at least two opposing planes, the U-shaped groove (or the first protrusion 62) can be driven to rotate synchronously through these two planes when the first protrusion 62 rotates (or when the U-shaped groove rotates).

[0131] Since the second connecting part 221 can rotate when the output shaft 22 drives the second connecting part 221 to rotate, and the second connecting part 221 can drive the first connecting part 51 to rotate, the radial cross-section of the first protrusion 62 is non-circular. For example, the shape of the first protrusion 62 can be perfectly matched with the inner wall shape of the first groove 61, such as... Figure 5 As shown; the shape of the first protrusion 62 may not be completely adapted to the inner wall shape of the first groove 61, as long as the rotation of one of the first protrusion 62 and the first groove 61 can drive the other to rotate synchronously.

[0132] (2) The second structural form of the first groove 61: Figure 6 This is a second schematic diagram of the rotary switch 100 provided in this embodiment of the application, after removing the handle 10 and the operating mechanism 20. Figure 7 This is a second schematic diagram of the structure of the operating mechanism 20 provided in the embodiments of this application, wherein, Figure 7 The output shaft 22 of the operating mechanism 20 and Figure 6 The connector 50 is shape-fitted; please refer to the reference. Figure 6 and Figure 7 The first groove 61 has a trapezoidal groove in cross-section along the direction perpendicular to the arrangement of the operating mechanism 20 and the switch body 30. Figure 2 In the direction of the terminal block 400, the radial dimension of the trapezoidal groove gradually decreases.

[0133] That is, the first groove 61 can be a trapezoidal groove in addition to a U-shaped groove. When the first groove 61 is a trapezoidal groove, in order to facilitate the insertion and removal of the first groove 61 and the first protrusion 62, the radial dimension of the trapezoidal groove gradually decreases along the insertion direction (i.e., the first direction a) from the second connecting part 221 to the first connecting part 51. In this way, the opening size of the trapezoidal groove is larger, which is beneficial to the insertion of the first protrusion 62.

[0134] The U-shaped groove and trapezoidal groove provided in this application are two possible structural forms of the first groove 61. The U-shaped groove and trapezoidal groove have simple structures and are easier to manufacture. Using this structure to achieve plug-in connection with the first protrusion 62 has high advantages in terms of processing difficulty and production cost.

[0135] In some embodiments, the operating mechanism 20 has a first housing 23, with the input shaft 21 and the output shaft 22 partially rotatably connected inside the first housing 23 and partially extending outside the first housing 23. The side of the first housing 23 facing the switch body 30 has a second protrusion 231.

[0136] The rotary switch 100 also includes a second housing 70, which is fixedly connected to the side of the first switch body 33 facing the operating mechanism 20. The side of the second housing 70 facing the operating mechanism 20 has a second groove 71. Along the insertion direction from the second connecting portion 221 to the first connecting portion 51, the second groove 71 is used for plugging and unplugging connection with the second protrusion 231. One end of the connector 50 away from the moving contact passes through the second housing 70 and extends into the second groove 71; the portion of the connector 50 extending into the second groove 71 has at least the first connecting portion 51.

[0137] The operating mechanism 20 can accommodate at least a portion of the input shaft 21 and the output shaft 22, as well as other parts of the operating mechanism 20 (such as the transmission structure), by providing the first housing 23, thereby protecting the transmission components in the operating mechanism 20.

[0138] The second housing 70 has a second groove 71 on the side facing the operating mechanism 20, and the first housing 23 has a second protrusion 231 on the side facing the switch body 30. Thus, along the insertion direction from the second connecting portion 221 to the first connecting portion 51, the second groove 71 can be plugged into and unplugged with the second protrusion 231, thereby achieving a detachable connection between the second housing 70 and the first housing 23. That is, when the first connecting portion 51 and the second connecting portion 221 are plugged into and unplugged, the second groove 71 and the second protrusion 231 are also plugged into and unplugged. This application, by combining the cooperation of the second groove 71 and the second protrusion 231 with the cooperation of the first connecting portion 51 and the second connecting portion 221, can improve the reliability of the connection between the operating mechanism 20 and the first switch body 33.

[0139] For example, the direction of the second protrusion 231 on the first housing 23 toward the second connecting portion 221 is the same as the insertion direction from the second connecting portion 221 to the first connecting portion 51, corresponding to... Figure 4 and Figure 5 In the orientation shown, the insertion direction from the second connecting part 221 to the first connecting part 51 is from top to bottom. Correspondingly, the direction of the second protrusion 231 toward the second connecting part 221 is also from top to bottom. Figure 4and Figure 5 In the orientation shown, the second protrusion 231 is located above the second connecting portion 221. In this way, the insertion and removal of the second protrusion 231 and the second groove 71 will not affect the insertion and removal of the first connecting portion 51 and the second connecting portion 221.

[0140] The second protrusion 231 and the second groove 71 can also be interchanged, that is, the second protrusion 231 is disposed on the second housing 70, and the second groove 71 is disposed on the first housing 23. When the second protrusion 231 is disposed on the second housing 70 and the second groove 71 is disposed on the first housing 23, in order to avoid the second protrusion 231 and the second groove 71 affecting the insertion and removal of the first connecting part 51 and the second connecting part 221 when they are inserted and removed, in some embodiments, the direction of the first connecting part 51 toward the second protrusion 231 is the same as the insertion direction of the second connecting part 221 to the first connecting part 51.

[0141] Furthermore, in some embodiments, one of the side of the second housing 70 facing the first housing 23 and the side of the first housing 23 facing the second housing 70 has a guide member 232 and the other has a guide groove 72; along the insertion direction from the second connecting portion 221 to the first connecting portion 51, the guide groove 72 is used for plugging and unplugging connection with the guide member 232.

[0142] By providing guide member 232 and guide groove 72, this application enables guide member 232 and guide groove 72 to play a guiding role when the first connecting part 51 and the second connecting part 221 are inserted and removed, as well as when the second protrusion 231 and the second groove 71 are inserted and removed, so as to facilitate quick insertion and removal.

[0143] Among them, combined Figure 4 and Figure 5 As shown or in combination Figure 6 and Figure 7 As shown, the opening of the guide groove 72 facing the guide member 232 gradually converges along the direction of the switch body 30 toward the operating mechanism 20. That is, along the direction of the switch body 30 toward the operating mechanism 20, the opening of the guide groove 72 facing the guide member 232 gradually becomes smaller. In this way, when the guide member 232 is inserted into the guide groove 72 along the insertion direction from the second connecting part 221 to the first connecting part 51, the above arrangement can prevent the guide member 232 from coming out of the guide groove 72 along the direction of the switch body 30 toward the operating mechanism 20, thereby improving the connection reliability of the first housing 23 and the second housing 70.

[0144] Figure 8 This is one of the structural schematic diagrams of the rotary switch 100 provided in the embodiments of this application. In some embodiments, please refer to the following: Figure 6 and Figure 8As shown, a portion of the first stationary contact 311 is fixed inside the housing 32, while another portion extends outside the housing 32. By providing the housing 32, this application can accommodate the moving contact and a portion of the first stationary contact 311, thereby protecting the transmission components in the switch body 30.

[0145] Figure 9 This is a schematic diagram of the rotary switch 100 provided in this application embodiment after removing the handle 10 and mounting it on the terminal block 400. Please refer to the following: Figure 8 and Figure 9 As shown, a third protrusion 73 is fixedly connected to the outer wall of the second housing 70. The portion of the first stationary contact 311 extending outside the housing 32 and the third protrusion 73 are located on the same side of the housing 32. The third protrusion 73 is used to fixally connect to the terminal block 400.

[0146] That is, when the second housing 70 is provided in this application, a third protrusion 73 is also provided on the second housing 70. The third protrusion 73 enables the second housing 70 to form a stable anchor with the terminal block 400, which can increase the effective support area of ​​the rotary switch 100. When the rotary switch 100 is assembled with the terminal block 400, if screws 80 are used to fix the operating mechanism 20 and the terminal block 400, the cooperation between the third protrusion 73 and the first stationary contact 311 can resist the torque generated when the screws 80 are turned. When the rotary switch 100 is subjected to external vibration or impact, the cooperation between the third protrusion 73 and the first stationary contact 311 can improve the anti-overturning ability of the rotary switch 100 and suppress the displacement caused by torque. That is, the addition of the third protrusion 73 to the second housing 70 can improve the mechanical stability of the rotary switch 100 by increasing the constraint point, distributing the load, and expanding the support surface. It can withstand the operational stress during the assembly process (such as the torque generated when screwing screw 80 is used to fix the operating mechanism 20 and the terminal block 400), and suppress the deformation caused by external dynamic environment (such as vibration or impact), ultimately ensuring the long-term reliability of the electrical connection between the terminal block 400 and the rotary switch 100.

[0147] Since no moving or stationary contact is provided inside the second housing 70, the third protrusion 73 on the second housing 70 does not need to be electrically connected to the terminal block 400; it only needs to be fixed to the terminal block 400. For example, both the third protrusion 73 and the first stationary contact 311 are soldered to the terminal block 400. The first stationary contact 311 is electrically connected to the wiring within the terminal block 400, while the third protrusion 73 has no electrical connection to the wiring within the terminal block 400.

[0148] In some embodiments, the first housing 23 has a through hole 233, the axial direction of which is parallel to the insertion direction of the second connecting portion 221 to the first connecting portion 51; the power conversion device 1000 further includes a screw 80, the head of which contacts the first housing 23, and the shank of which passes through the through hole 233 and is fixed to the terminal block 400. By providing a through hole 233 in the first housing 23, this application allows the screw 80 to pass through the through hole 233, thus enabling the first housing 23 to be fixed to the terminal block 400 using the cooperation of the screw 80 and a nut.

[0149] The through hole 233 can be either a smooth hole or a threaded hole. When the through hole 233 is a smooth hole, the head of the screw 80 abuts against the side of the first housing 23 away from the terminal plate 400, and the shank of the screw 80 passes through the terminal plate 400 and extends out from the side of the terminal plate 400 away from the first housing 23. The part of the screw 80 extending outside the terminal plate 400 cooperates with the nut to fix the first housing 23 and the terminal plate 400. When the through hole 233 is a threaded hole, the shank of the screw 80 not only passes through the threaded hole but is also threadedly connected to the threaded hole.

[0150] Figure 10 This is one of the schematic diagrams illustrating the installation process of the rotary switch 100 and the terminal block 400 provided in the embodiments of this application. Figure 11 This is the second schematic diagram illustrating the installation process of the rotary switch 100 and the terminal block 400 provided in the embodiments of this application. Figure 12 This is the third schematic diagram illustrating the installation process of the rotary switch 100 and the terminal block 400 provided in the embodiments of this application. Figure 13 This is the fourth schematic diagram illustrating the installation process of the rotary switch 100 and the terminal block 400 provided in the embodiments of this application. By way of example, referencing... Figures 10 to 13 As shown, when the rotary switch 100 needs to be fixed to the terminal block 400, the switch body 30 and the second housing 70 can be first welded to the terminal block 400 by wave soldering (specifically, the first stationary contact 311 of the switch body 30 and the third protrusion 73 of the second housing 70 are welded to the terminal block 400), as... Figure 10 As shown; then as Figure 11 and Figure 12 As shown, the operating mechanism 20 is installed on one side of the second housing 70 along the first direction a (specifically, the guide 232 is inserted into the guide groove 72, and the second protrusion 231 is inserted into the second recess 71; when the guide 232 is inserted into the guide groove 72, the second protrusion 231, and the second recess 71 are inserted together, the second connecting part 221 of the output shaft 22 and the first connecting part 51 of the connector 50 are also inserted together simultaneously); then the first housing 23 of the operating mechanism 20 is fixed to the terminal block 400 by screws 80, as shown. Figure 13As shown; finally, the handle 10 is installed on the side of the terminal block 400 away from the first housing 23, and the handle 10 is fixed together with the input shaft 21.

[0151] To facilitate the fixing of the rotary switch 100 to the terminal block 400, for example, this application provides a connecting post on the side of the rotary switch 100 facing the terminal block 400. The connecting post, as a positioning structure, can be inserted into the terminal block 400 to pre-position it. When the stationary contact 31 and the terminal block 400 are welded together using wave soldering after the connecting post is inserted into the terminal block 400, or when the operating mechanism 20 and the terminal block 400 are fixed using screws 80, the connecting post can, to a certain extent, prevent displacement of the rotary switch 100 relative to the terminal block 400, thereby improving the reliability of the rotary switch 100 and the terminal block 400 during assembly.

[0152] Among them, such as Figure 8 As shown, when the connecting post is mounted on the outer casing 32, it is referred to as the first connecting post 321, and when the connecting post is mounted on the first casing 23, it is referred to as the second connecting post 234. The rotary switch 100 of this application may have only the first connecting post 321, only the second connecting post 234, or both. The first connecting post 321 and the second connecting post 234 are illustrated below.

[0153] (1) Regarding the first connecting post 321: as follows Figure 8 As shown, at least two of the multiple switch bodies 30 have a first connecting post 321 on the outer wall of the housing 32. The portions of the first connecting post 321 and the first stationary contact 311 extending out of the housing 32 are located on the same side of the housing 32. The first connecting post 321 is used to be inserted into the terminal block 400, and the portion of the first stationary contact 311 extending out of the housing 32 is used to be electrically connected to the terminal block 400.

[0154] That is, the first connecting post 321 is fixed to the outer wall of the housing 32. The portions of the first connecting post 321 and the first stationary contact 311 extending outside the housing 32 are located on the same side of the housing 32. In this way, when the rotary switch 100 is fixed to the terminal block 400, it is convenient for the portions of the first connecting post 321 and the first stationary contact 311 extending outside the housing 32 to be welded to the terminal block 400.

[0155] For example, the different first connecting posts 321 are spaced apart, so that the force is more evenly distributed when the rotary switch 100 is fixed to the terminal block 400.

[0156] This application provides at least two first connecting posts 321 on the housing 32 and inserts the first connecting posts 321 into the terminal block 400. In this way, before the first stationary contact 311 and the terminal block 400 are welded and fixed, at least two first connecting posts 321 can cooperate with each other to pre-position the housing 32 on the terminal block 400, which facilitates the subsequent welding of the terminal block 400 and the first stationary contact 311.

[0157] (2) Regarding the second connecting post 234: continue to refer to Figure 8 As shown, the outer wall of the first housing 23 is provided with at least two second connecting posts 234. The portions of the second connecting posts 234 and the first stationary contact 311 extending outside the housing 32 are located on the same side of the first housing 23. The second connecting posts 234 are used to be inserted into the terminal block 400, and the portions of the first stationary contact 311 extending outside the housing 32 are used to be electrically connected to the terminal block 400.

[0158] That is, unlike the first connecting post 321, the second connecting post 234 is fixed to the outer wall of the first housing 23. The portions of the second connecting post 234 and the first stationary contact 311 extending beyond the outer casing 32 are located on the same side of the first housing 23. Thus, when the rotary switch 100 is fixed to the terminal block 400, the second connecting post 234 is located on the side of the first housing 23 facing the terminal block 400, and the portion of the first stationary contact 311 extending beyond the outer casing 32 is located on the side of the outer casing 32 facing the terminal block 400.

[0159] This application provides at least two second connecting posts 234 on the first housing 23 and inserts the second connecting posts 234 into the terminal block 400. In this way, when the first housing 23 and the terminal block 400 are threadedly connected by screws 80, the at least two second connecting posts 234 can cooperate with each other to pre-position the first housing 23 on the terminal block 400. This can prevent the first housing 23 from shifting when the screws 80 are tightened later, and facilitates the insertion and fixing of the screws 80.

[0160] The specific structure of the first connecting post 321 and the second connecting post 234 is not limited in this application, as long as they can be inserted into the terminal block 400. Accordingly, in order to facilitate the insertion of the corresponding connecting posts, the terminal block 400 may be provided with plug holes adapted to the corresponding connecting posts.

[0161] In some embodiments, the axial direction of the input shaft 21 is perpendicular to the axial direction of the output shaft 22. This allows the input shaft 21 and output shaft 22 to operate at a 90° angle, enabling the rotary switch 100 to be used in applications where dimensions are limited along the arrangement direction of the operating mechanism 20 and the switch body 30, thus meeting the application requirements of some special scenarios.

[0162] Of course, the fact that the axis of the input shaft 21 is perpendicular to the axis of the output shaft 22 is just an example. In other embodiments, the axis of the input shaft 21 and the axis of the output shaft 22 can also be collinear or parallel. In this case, the rotary switch 100 can be applied in application scenarios where the size is limited along the arrangement direction perpendicular to the operating mechanism 20 and the switch body 30.

[0163] In some embodiments, such as Figure 8 As shown, the moving contacts of multiple switch bodies 30 are linked together, that is, the rotation of one moving contact can drive the other moving contacts to rotate synchronously, thereby realizing the synchronous opening or closing of multiple switch bodies 30.

[0164] In some embodiments, in addition to all being located on the same side of the operating mechanism 20, multiple switch bodies 30 are also... Figure 14 This is a second schematic diagram of the structure of the rotary switch 100 provided in the embodiments of this application, as shown below. Figure 14 As shown, along the arrangement direction of the operating mechanism 20 and the switch body 30, a portion of the switch body 30 is provided on both opposite sides of the operating mechanism 20. That is, a portion of the multiple switch bodies 30 is located on one side of the operating mechanism 20, and another portion of the multiple switch bodies 30 is located on the other side of the operating mechanism 20.

[0165] When the operating mechanism 20 and the switch body 30 are arranged along the direction of their arrangement, and the operating mechanism 20 is provided on both opposite sides of the switch body 30, the output shaft 22 includes two sub-shafts. The two sub-shafts are distributed on both radial sides of the input shaft 21. The switch body 30 located on one side of the operating mechanism 20 is connected to the input shaft 21 through one of the sub-shafts, and the switch body 30 located on the other side of the operating mechanism 20 is connected to the input shaft 21 through the other sub-shaft.

[0166] The two sub-shafts are arranged parallel to the radial direction of the input shaft 21, and the two sub-shafts are located on opposite sides of the input shaft 21. This application provides at least a portion of the switch body 30 on both opposite sides of the operating mechanism 20, and provides two sub-shafts. The two sub-shafts can respectively drive the switch bodies 30 on both sides of the operating mechanism 20 to open or close the circuit. Two sets of switch bodies 30 can be controlled by one operating mechanism 20.

[0167] Among them, the two sub-shafts can be two parts of the output shaft 22, that is, the two sub-shafts belong to an integral structure; or, the two sub-shafts can be separate independent components, and the two sub-shafts are driven synchronously by the input shaft 21 to realize the synchronous opening or closing of the switch body 30 on different sides of the operating mechanism 20.

[0168] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power conversion device, characterized in that, Includes a housing, a photovoltaic connector, a rotary switch, and a power conversion circuit and terminal block located within the housing, wherein: The housing includes a side wall, the photovoltaic connector is fixed to the side wall, one end of the photovoltaic connector passes through the side wall and extends into the housing to be electrically connected to the terminal block, and the other end of the photovoltaic connector is used to connect to the photovoltaic module; The rotary switch includes a handle, an operating mechanism, and multiple stacked switch bodies. The multiple stacked switch bodies are located on one side of the operating mechanism. The multiple stacked switch bodies and the operating mechanism are respectively fixed to the terminal block, and the operating mechanism and the switch body closest to the operating mechanism among the multiple stacked switch bodies are detachably connected. Each of the multiple stacked switch bodies includes a housing and a moving contact, a first stationary contact, and a second stationary contact housed within the housing. The moving contact rotates relative to the housing, while the first and second stationary contacts are fixed relative to the housing. The first stationary contact of each switch body is connected to the terminal block and electrically connected to the photovoltaic connector via the terminal block. The second stationary contact of each switch body is electrically connected to the power conversion circuit. The handle is used to control the operating mechanism to drive the moving contact of the switch body to rotate, so that the moving contact is separated from or in contact with the first stationary contact and the second stationary contact.

2. The power conversion device according to claim 1, characterized in that, The first stationary contact of each of the switch bodies is welded to the terminal block.

3. The power conversion device according to claim 1 or 2, characterized in that, The operating mechanism includes an input shaft and an output shaft. The handle is fixedly connected to the input shaft, and the input shaft is drivenly connected to the output shaft. The input shaft can drive the output shaft to rotate. The output shaft is detachably connected to the moving contact of the switch body closest to the operating mechanism among the multiple stacked switch bodies, and the rotation of the output shaft can drive the moving contact to rotate.

4. The power conversion device according to claim 3, characterized in that, The rotary switch further includes a connector located between the switch body and the operating mechanism, which are the most closely spaced switch bodies in the plurality of stacked switch bodies; one end of the connector is fixedly connected to the moving contact, the other end of the connector has a first connecting portion, and the end of the output shaft facing the switch body has a second connecting portion; One of the first connecting portion and the second connecting portion is a first groove and the other is a first protrusion. The first groove is used to plug and unplug into the first protrusion in a direction perpendicular to the arrangement of the operating mechanism and the switch body. When the output shaft drives the second connecting portion to rotate, the second connecting portion can drive the first connecting portion to rotate, so that the first connecting portion drives the moving contact to rotate.

5. The power conversion device according to claim 4, characterized in that, The first groove has a U-shaped cross-section along the arrangement direction perpendicular to the operating mechanism and the switch body; Alternatively, the first groove may have a trapezoidal groove in cross-section along the direction perpendicular to the arrangement of the operating mechanism and the switch body, and the radial dimension of the trapezoidal groove may gradually decrease along the direction perpendicular to the terminal block.

6. The power conversion device according to claim 4 or 5, characterized in that, The operating mechanism has a first housing, and both the input shaft and the output shaft are partially rotatably connected inside the first housing and partially extend outside the first housing. The side of the first housing facing the switch body has a second protrusion. The rotary switch further includes a second housing, which is fixedly connected to the side of the switch body closest to the operating mechanism among the plurality of stacked switch bodies, facing the operating mechanism; the side of the second housing facing the operating mechanism is provided with a second groove, which is used for plugging and unplugging with the second protrusion along the insertion direction from the second connecting part to the first connecting part; The end of the connector opposite to the moving contact passes through the second housing and extends into the second groove; the portion of the connector extending into the second groove has at least the first connecting portion.

7. The power conversion device according to claim 6, characterized in that, The second housing has a guide member on one side facing the first housing and the first housing has a guide groove on the other side; the guide groove is used for plugging and unplugging connection with the guide member along the insertion direction from the second connection portion to the first connection portion.

8. The power conversion device according to claim 6 or 7, characterized in that, A portion of the first stationary contact is fixed inside the housing, while another portion extends outside the housing. A third protrusion is fixedly connected to the outer wall of the second housing. The portion of the first stationary contact extending outside the housing and the third protrusion are located on the same side of the housing. The third protrusion is used to fixally connect to the terminal block.

9. The power conversion device according to any one of claims 6-8, characterized in that, The first housing has a through hole, the axis of which is parallel to the insertion direction from the second connection to the first connection; the power conversion device further includes a screw, the head of which contacts the first housing, and the shank of which passes through the through hole and is fixed to the terminal block.

10. The power conversion device according to any one of claims 3-9, characterized in that, The operating mechanism has a first housing, and both the input shaft and the output shaft are partially rotatably connected inside the first housing and partially extend outside the first housing. The first housing and the handle are located on opposite sides of the terminal block. The portion of the input shaft extending outside the first housing passes through the terminal block and is fixedly connected to the handle.

11. The power conversion device according to any one of claims 3-10, characterized in that, The axis of the input shaft is perpendicular to the axis of the output shaft.

12. The power conversion device according to any one of claims 3-10, characterized in that, Along the arrangement direction of the operating mechanism and the switch body, a portion of the switch body is provided on both opposite sides of the operating mechanism; The output shaft includes two sub-shafts, which are distributed on both radial sides of the input shaft. The switch body located on one side of the operating mechanism is connected to the input shaft via one of the sub-shafts, and the switch body located on the other side of the operating mechanism is connected to the input shaft via the other sub-shaft.

13. The power conversion device according to any one of claims 1-12, characterized in that, A portion of the first stationary contact is fixed inside the housing, while another portion extends outside the housing. At least two of the multiple switch bodies have a first connecting post on the outer wall of the housing. All the first connecting posts and the portions of the first stationary contact extending outside the housing are located on the same side of the housing. The first connecting post is used to be inserted into the terminal block, and the portion of the first stationary contact extending outside the housing is used to be electrically connected to the terminal block.

14. The power conversion device according to any one of claims 1-13, characterized in that, A portion of the first stationary contact is fixed inside the housing, while another portion extends outside the housing. The operating mechanism has a first housing, and the outer wall of the first housing is provided with at least two second connecting posts. The portions of the second connecting posts and the first stationary contact extending outside the housing are located on the same side of the first housing. The second connecting posts are used to be inserted into the terminal block, and the portion of the first stationary contact extending outside the housing is electrically connected to the terminal block.

15. A rotary switch, characterized in that, The device includes a handle, an operating mechanism, and multiple stacked switch bodies. The stacked switch bodies are located on one side of the operating mechanism, and the operating mechanism is detachably connected to the switch body closest to the operating mechanism among the stacked switch bodies. Each of the stacked switch bodies includes a housing and a moving contact, a first stationary contact, and a second stationary contact housed within the housing. The moving contact rotates relative to the housing, and the first stationary contact and the second stationary contact are respectively fixed relative to the housing. The handle is used to control the operating mechanism to drive the moving contact of the switch body to rotate, so that the moving contact is separated from or in contact with the first stationary contact and the second stationary contact.

Images