Interlock, rectifier, and combination device

Abstract

The application provides an interlocking device, a rectifier and a combined device. The rectifier has a first switch and a second switch connected to different input sources. The interlocking device comprises a linkage mechanism and an operating member. The linkage mechanism comprises a driving shaft, a driven shaft, a driving gear and a driven gear. The driving gear is coaxially connected to the driving shaft, the driven gear is coaxially connected to the driven shaft, the driving gear is engaged with the driven gear, so that the driven shaft rotates with the driving shaft, the driving shaft controls the on-off of the first switch through rotation, and the driven shaft controls the on-off of the second switch through rotation. The operating member is connected to the driving shaft. The operating member drives the driving shaft to rotate and drives the driven shaft to rotate, so that one of the first switch and the second switch is in a conduction state and the other is in a disconnection state. The first switch and the second switch cannot be simultaneously turned on, which plays a foolproof role, improves the safety of the power supply circuit, and one operation of the user can control the first switch and the second switch at the same time, which improves the operation efficiency.

Description

Technical Field

[0001] This application relates to the field of rectifier technology, specifically to an interlocking device, a rectifier, and a combined device. Background Technology

[0002] Currently, in the charging scenarios of energy storage devices, energy storage devices can be charged by either an AC generator or a photovoltaic power generation device. However, since the power supply parameters of AC generators and photovoltaic power generation devices are different, they cannot be connected to the same port of the energy storage device for charging at the same time. Only one of the AC generator and photovoltaic power generation devices can be selected for power supply.

[0003] In related technologies, separate switches are typically installed in the power supply circuits of the AC generator and the photovoltaic power generation equipment. During operation, one switch needs to be turned on while the other is turned off. However, this method is not only cumbersome to operate but also lacks foolproof protection, easily leading to both switches being turned on simultaneously, which can damage the power supply circuit. Utility Model Content

[0004] In view of this, this application provides an interlocking device, rectifier, and combined equipment that can prevent mistakes and improve operational efficiency.

[0005] One embodiment of this application provides an interlocking device applied to a rectifier. The rectifier is equipped with a first switch and a second switch, which are respectively connected to different input sources and configured to control the on / off state of the connected input sources. The interlocking device includes a linkage mechanism and an operating element. The linkage mechanism includes a drive shaft, a driven shaft, a drive gear, and a driven gear. The drive gear is coaxially connected to the drive shaft, and the drive gear and drive shaft rotate synchronously. The driven gear is coaxially connected to the driven shaft, and the driven gear and driven shaft rotate synchronously. The drive gear meshes with the driven gear, causing the driven shaft to rotate with the drive shaft. The drive shaft is configured to control the on / off state of the first switch by rotation, and the driven shaft is configured to control the on / off state of the second switch by rotation. The operating element is connected to the drive shaft and configured to drive the drive shaft to rotate and cause the driven shaft to rotate, so that when one of the first switch and the second switch is in a conducting state, the other is in a disconnected state.

[0006] The interlocking device provided in this application, when in use, allows the driven shaft to rotate synchronously with the driven shaft through the meshing of the driving gear and the driven gear. The user only needs to operate the operating component to rotate the driving shaft, which will simultaneously rotate the driven shaft. In addition, since one of the first and second switches is in the on state while the other is in the off state, when the driving shaft turns on the first switch, the driven shaft turns off the second switch, or when the driving shaft turns off the first switch, the driven shaft turns on the second switch. This ensures that only one of the first and second switches can be turned on, while the other is turned off, preventing the first and second switches from being turned on simultaneously. This provides a foolproof function, improves the safety of the power supply circuit, and allows the user to control both the first and second switches simultaneously with a single operation, thus improving operational efficiency.

[0007] In some embodiments, the interlocking device further includes a housing, a linkage mechanism disposed inside the housing, an operating element disposed outside the housing, and one end of the drive shaft extending out of the housing to connect to the operating element.

[0008] In some embodiments, the driven shaft has an irregular cross-section, and / or the end face of the driven shaft is marked; the housing is provided with an exposure hole that exposes the end of the driven shaft.

[0009] In some embodiments, the driven shaft has a notch in its cross-section, making the cross-section of the driven shaft irregular in shape, and the bore wall of the driven gear shaft hole has a protrusion that engages with the notch.

[0010] In some embodiments, the housing includes a main housing and a protective cover. The protective cover is detachably disposed on the main housing. The protective cover and the main housing enclose a receiving cavity. A drive gear and a driven gear are disposed in the receiving cavity. One end of the drive shaft and the driven shaft are disposed in the main housing. The other end of the driven shaft is located in the receiving cavity. The other end of the drive shaft extends out of the receiving cavity to connect to an operating member. The operating member is disposed on the protective cover.

[0011] In some embodiments, the interlocking device further includes multiple locking fasteners, the main housing includes multiple support columns that support the protective cover, each support column has a mounting hole at one end near the protective cover, the protective cover has multiple through holes, each through hole is aligned with a mounting hole, and the aligned through holes and mounting holes are configured to install a locking fastener to fix the protective cover and the main housing.

[0012] In some embodiments, the protective cover has a recess at each through-hole, and each recess is configured to receive a locking fastener.

[0013] In one embodiment of this application, a rectifier is also provided, including a first switch, a second switch, a rectifier bridge, an AC input port, a DC input port, an output port, and an interlocking device as described in any of the above embodiments. The AC input port is electrically connected to the rectifier bridge, the rectifier bridge is electrically connected to the first switch, the second switch is electrically connected to the DC input port, and the output port is electrically connected to the first switch and the second switch. The interlocking device is used to selectively turn on the first switch or the second switch.

[0014] In some embodiments, the rectifier further includes a housing, an interlocking device, a first switch, a second switch, and a rectifier bridge housed within the housing, while the operating components, AC input port, DC input port, and output port are exposed outside the housing.

[0015] In one embodiment of this application, a combined device is also provided, including an energy storage device and a rectifier as described in any of the above embodiments. The energy storage device is provided with a DC interface, and the output port of the rectifier is electrically connected to the DC interface.

[0016] The rectifier and combined equipment provided in this application, through the aforementioned interlocking device, also ensure that only one of the first and second switches can be turned on while the other is turned off, preventing the first and second switches from being turned on simultaneously. This serves as a foolproof mechanism, improves the safety of the power supply circuit, and allows the user to control both the first and second switches simultaneously with a single operation, thus improving operational efficiency. Attached Figure Description

[0017] Figure 1 This is a perspective view of the combined device in one embodiment of this application.

[0018] Figure 2 for Figure 1 A 3D diagram of the rectifier in the image.

[0019] Figure 3 for Figure 2 An exploded view of the rectifier in the diagram.

[0020] Figure 4 for Figure 1 A perspective view of the interlocking device, the first switch, and the second switch.

[0021] Figure 5 for Figure 4 Exploded view of the interlocking device in the diagram.

[0022] Figure 6 for Figure 5 Enlarged view of point A in the image.

[0023] Explanation of main component symbols

[0024] Interlock device, 100; Rectifier, 200; First switch, 201; Second switch, 202; Rectifier bridge, 203; AC input port, 204; DC input port, 205; Output port, 206; Port, 207; Housing, 208; Combined equipment, 300; Energy storage equipment, 301; DC interface, 302; AC power generation equipment, 400; DC power generation equipment, 500; Linkage mechanism, 10; Drive shaft, 11; Driven shaft, 12; Notch, 121; Drive gear, 13; Driven gear, 14; Protrusion, 141; Operating component, 20; Housing, 30; Exposed hole, 31; Main housing, 32; Support column, 321; Mounting hole, 322; Protective cover, 33; Through hole, 331; Groove, 332; Receiving cavity, 34; Locking fastener, 40. Detailed Implementation

[0025] The technical solution of this application will now be described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments.

[0026] It should be noted that when an element is considered "connected to" or "located on" another element, it can be directly connected to the other element or may have an intervening element. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] The terms "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary / secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined. The shape descriptions in the embodiments of this application are merely illustrative and should not constitute any absolute limitation on this application.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Where there is no conflict, the various embodiments in this application can be combined with each other.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising,” “having,” and “equipped with,” and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The term “or / and” as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Currently, in the charging scenarios of energy storage devices, energy storage devices can be charged by either an AC generator or a photovoltaic power generation device. However, since the power supply parameters of AC generators and photovoltaic power generation devices are different, they cannot be connected to the same port of the energy storage device for charging at the same time. Only one of the AC generator and photovoltaic power generation devices can be selected for power supply.

[0031] In related technologies, separate switches are typically installed in the power supply circuits of the AC generator and the photovoltaic power generation equipment. During operation, one switch needs to be turned on while the other is turned off. However, this method is not only cumbersome to operate but also lacks foolproof protection, easily leading to both switches being turned on simultaneously, which can damage the power supply circuit.

[0032] In view of this, this application provides an interlocking device, a rectifier, and a combined device that can prevent mistakes and improve operational efficiency. The interlocking device is applied to a rectifier, which is equipped with a first switch and a second switch. The first and second switches are respectively connected to different input sources and configured to control the on / off state of the connected input sources. The interlocking device includes a linkage mechanism and an operating element. The linkage mechanism includes a drive shaft, a driven shaft, a drive gear, and a driven gear. The drive gear is coaxially connected to the drive shaft, and the drive gear and drive shaft rotate synchronously. The driven gear is coaxially connected to the driven shaft, and the driven gear and driven shaft rotate synchronously. The drive gear meshes with the driven gear, causing the driven shaft to rotate with the drive shaft. The drive shaft is configured to control the on / off state of the first switch by rotation, and the driven shaft is configured to control the on / off state of the second switch by rotation. The operating element is connected to the drive shaft and configured to drive the drive shaft to rotate and thus rotate the driven shaft, so that when one of the first and second switches is in a conducting state, the other is in a disconnected state.

[0033] The interlocking device provided in this application, when in use, allows the driven shaft to rotate synchronously with the driven shaft through the meshing of the driving gear and the driven gear. The user only needs to operate the operating component to rotate the driving shaft, which will simultaneously rotate the driven shaft. In addition, since one of the first and second switches is in the on state while the other is in the off state, when the driving shaft turns on the first switch, the driven shaft turns off the second switch, or when the driving shaft turns off the first switch, the driven shaft turns on the second switch. This ensures that only one of the first and second switches can be turned on, while the other is turned off, preventing the first and second switches from being turned on simultaneously. This provides a foolproof function, improves the safety of the power supply circuit, and allows the user to control both the first and second switches simultaneously with a single operation, thus improving operational efficiency.

[0034] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, some embodiments of this application provide an interlocking device 100, a rectifier 200, and a combined device 300. The combined device 300 includes an energy storage device 301 and a rectifier 200, which includes the interlocking device 100. The rectifier 200 is electrically connected to two different power input sources through the interlocking device 100. The interlocking device 100 is used to turn on one of the two input sources and disconnect the other. The rectifier 200 is used to convert the power supplied by the input sources into the required DC power and charge the energy storage device 301.

[0036] Alternatively, the two different input sources can be an AC power generator 400 and a DC power generator 500. The AC power generator 400 supplies AC power to the rectifier 200, which converts the AC power into the required DC power to charge the energy storage device 301. The DC power generator 500 supplies DC power to the rectifier 200, which can then directly charge the energy storage device 301 without requiring DC power conversion.

[0037] For example, the energy storage device 301 may be a portable power source for outdoor use or a home energy storage system for home use; the AC power generation device 400 may be a fuel generator; and the DC power generation device 500 may be a solar panel.

[0038] In some embodiments, such as Figure 1 , Figure 2 and Figure 3As shown, the rectifier 200 also includes a first switch 201, a second switch 202, a rectifier bridge 203, an AC input port 204, a DC input port 205, and an output port 206. The AC input port 204 is used to electrically connect to the AC power generation device 400, the DC input port 205 is used to electrically connect to the DC power generation device 500, and the output port 206 is used to electrically connect to the DC interface 302 of the energy storage device 301.

[0039] Inside the rectifier 200, the AC input port 204 is electrically connected to the rectifier bridge 203, which is in turn electrically connected to the first switch 201. The rectifier bridge 203 converts the AC power from the AC power generation device 400 into DC power. The second switch 202 is electrically connected to the DC input port 205. The output port 206 is electrically connected to both the first switch 201 and the second switch 202. The interlocking device 100 controls the switching on or off of either the first switch 201 or the second switch 202, selectively turning on one while simultaneously turning off the other. This ensures that only one of the AC power generation device 400 or the DC power generation device 500 supplies power to the energy storage device 301, preventing both devices from simultaneously supplying power and thus improving the safety of the power supply circuit.

[0040] In some embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, the interlocking device 100 includes a linkage mechanism 10 and an operating member 20. The linkage mechanism 10 includes a drive shaft 11, a driven shaft 12, a drive gear 13, and a driven gear 14. The drive gear 13 is coaxially connected to the drive shaft 11, and the drive gear 13 and the drive shaft 11 rotate synchronously. The driven gear 14 is coaxially connected to the driven shaft 12, and the driven gear 14 and the driven shaft 12 rotate synchronously. The drive gear 13 meshes with the driven gear 14, causing the driven shaft 12 to rotate synchronously with the drive shaft 11. The drive shaft 11 is connected to a first switch 201, and its rotation controls the on / off state of the first switch 201. The driven shaft 12 is connected to a second switch 202, and its rotation controls the on / off state of the second switch 202. The operating member 20 is connected to the drive shaft 11 and is used to drive the drive shaft 11 to rotate.

[0041] Since the driven shaft 12 will rotate synchronously with the driven shaft 11 when the operating element 20 drives the driving shaft 11 to rotate, as long as the rotation angle of the driving shaft 11 and the driven shaft 12 is configured to correspond to the on and off positions of the first switch 201 and the second switch 202, it can be achieved that when one of the first switch 201 and the second switch 202 is in the on state, the other is exactly in the off state at the same time.

[0042] As can be seen, when the interlock device 100 is in use, the driven gear 13 meshes with the driven gear 14, allowing the driven shaft 12 to rotate synchronously with the driven shaft 11. The user only needs to rotate the driven shaft 11 by operating the operating component 20 to simultaneously rotate the driven shaft 12. In addition, since one of the first switch 201 and the second switch 202 is in the on state while the other is in the off state, when the driven shaft 11 turns on the first switch 201, the driven shaft 12 turns off the second switch 202, or when the driven shaft 11 turns off the first switch 201, the driven shaft 12 turns on the second switch 202. That is, only one of the first switch 201 and the second switch 202 can be turned on, while the other will be turned off. It is impossible for the first switch 201 and the second switch 202 to be turned on at the same time, which plays a foolproof role, improves the safety of the power supply circuit, and allows the user to control the first switch 201 and the second switch 202 simultaneously with one operation, thus improving operating efficiency.

[0043] Optionally, the driving gear 13 and the driven gear 14 have the same radial dimension. The angle between the on and off positions of the first switch 201 and the second switch 202 is 180 degrees. After the operating member 20 drives the driving shaft 11 to rotate 180 degrees, the driven shaft 12 also rotates 180 degrees in the opposite direction, so that one of the first switch 201 and the second switch 202 is on and the other is off.

[0044] Understandably, in other embodiments, the angle between the on and off positions of the first switch 201 and the second switch 202 can also be 90 degrees or other angles, or the radial dimensions of the driving gear 13 and the driven gear 14 can be different. For example, the radial dimension of the driving gear 13 is greater than that of the driven gear 14. After the operating member 20 drives the driving shaft 11 to rotate 90 degrees, the driven shaft 12 rotates 180 degrees in the opposite direction. As long as one of the first switch 201 and the second switch 202 is turned on while the other is turned off, it is acceptable.

[0045] In some embodiments, such as Figure 4 and Figure 5 As shown, the interlocking device 100 also includes a housing 30. The linkage mechanism 10 is located within the housing 30, allowing the housing 30 to protect the drive shaft 11, driven shaft 12, drive gear 13, and driven gear 14. An operating member 20 is located outside the housing 30, allowing the user to rotate it by hand. One end of the drive shaft 11 extends out of the housing 30 to connect to the operating member 20.

[0046] Optionally, the operating element 20 can be a component that is easy for the user to hold, such as a knob, handle, or handwheel.

[0047] In some embodiments, such as Figure 5 and Figure 6As shown, the driven shaft 12 has an irregular cross-section. The housing 30 is provided with an exposure hole 31, which is used to expose the end of the driven shaft 12. This allows the user to observe the irregular cross-section of the driven shaft 12 through the exposure hole 31. When the user rotates the operating component 20, they can observe the driven shaft 12 to determine whether the driven shaft 12 rotates synchronously with the driving shaft 11, and promptly detect whether there is a tooth disengagement phenomenon between the driving gear 13 and the driven gear 14. This avoids the situation where the first switch 201 and the second switch 202 are turned on at the same time, thereby improving the safety of the power supply circuit.

[0048] Optionally, the driven shaft 12 is provided with a mark (not shown) at its end, which is exposed in the exposure hole 31, so that the user can determine whether the driven shaft 12 rotates synchronously with the driving shaft 11 by observing the mark.

[0049] In some embodiments, such as Figure 5 and Figure 6 As shown, the driven shaft 12 has a notch 121 in its cross-section, which makes the cross-section of the driven shaft 12 irregular in shape so as to allow observation of the rotation of the driven shaft 12. The shaft hole of the driven gear 14 has a protrusion 141 on its bore wall, which engages with the notch 121 to ensure synchronous rotation between the driven gear 14 and the driven shaft 12 and reduce the risk of the driven gear 14 spinning idly.

[0050] Optionally, the driven shaft 12 has a regular hexagonal cross-section with a notch 121 on one side, and the driven gear 14 has a regular hexagonal shaft hole with a protrusion 141 on one side. This not only makes it easier to observe the rotation of the driven shaft 12, but also enables the driven gear 14 to stably drive the driven shaft 12 to rotate synchronously, reducing the risk of the driven gear 14 spinning idly and improving the safety of the circuit.

[0051] Optionally, the cross-section of the drive shaft 11 is the same as that of the driven shaft 12, and the shaft hole of the drive gear 13 is the same as that of the driven gear 14, so that the drive shaft 11 can stably drive the drive gear 13 to rotate synchronously, reducing the risk of the drive shaft 11 spinning idly and improving the safety of the circuit.

[0052] In some embodiments, such as Figure 4 and Figure 5As shown, the housing 30 includes a main housing 32 and a protective cover 33. The protective cover 33 is detachably disposed on the main housing 32. The first switch 201 and the second switch 202 are disposed on the main housing 32, and the operating member 20 is disposed on the outside of the protective cover 33. The protective cover 33 and the main housing 32 enclose a receiving cavity 34, in which the driving gear 13 and the driven gear 14 are disposed. One end of the driving shaft 11 and the driven shaft 12 is disposed in the main housing 32 to connect the first switch 201 and the second switch 202. The other end of the driven shaft 12 is located in the receiving cavity 34, and the other end of the driving shaft 11 extends out of the receiving cavity 34 to connect to the operating member 20. The protective cover 33 serves to protect the driving shaft 11, the driven shaft 12, the driving gear 13, and the driven gear 14. When the driving gear 13 and the driven gear 14 need to be repaired, only the protective cover 33 needs to be removed without disassembling the main housing 32, thereby improving the convenience of disassembly and assembly.

[0053] Optionally, the protective cover 33 is provided with an exposure hole 31 at the position corresponding to the driven shaft 12 to expose the end face of the driven shaft 12, so that the user can observe the rotation of the driven shaft 12.

[0054] Optionally, the first switch 201 and the second switch 202 are at least partially exposed on one side of the main housing 32 and are provided with a port 207. The port 207 can be plugged into a cable to electrically connect to the rectifier bridge 203 or the DC input port 205, thereby realizing the electrical connection between the first switch 201 and the rectifier bridge 203, and the electrical connection between the second switch 202 and the DC input port 205.

[0055] In some embodiments, such as Figure 4 and Figure 5 As shown, the interlocking device 100 also includes multiple locking fasteners 40, and the main housing 32 includes multiple support posts 321 that support the protective cover 33. Each support post 321 has a mounting hole 322 near one end of the protective cover 33. The protective cover 33 has multiple through holes 331, each of which is aligned with a mounting hole 322. The aligned through holes 331 and mounting holes 322 are used to install a locking fastener 40 to fix the protective cover 33 to the main housing 32. For example, the locking fastener 40 is a screw, and the mounting hole 322 is a threaded hole to engage the screw.

[0056] In some embodiments, such as Figure 4 and Figure 5 As shown, the protective cover 33 has a groove 332 at each through hole 331. Each groove 332 is used to accommodate a portion of a locking fastener 40 protruding from the protective cover 33, making the outer side of the protective cover 33 flatter, reducing the risk of interference between the operating component 20 and the locking fastener 40, and also reducing the risk of the user being scratched by the locking fastener 40 when operating the operating component 20, thereby improving ease of operation. For example, the locking fastener 40 is a screw, and the groove 332 is used to accommodate the screw head.

[0057] In some embodiments, such as Figures 1 to 3 As shown, the rectifier 200 also includes a housing 208, in which the interlocking device 100, the first switch 201, the second switch 202, and the rectifier bridge 203 are housed. The housing 208 protects the interlocking device 100, the first switch 201, the second switch 202, and the rectifier bridge 203. The operating component 20 is exposed outside the housing 208, allowing the user to operate the operating component 20 without opening the housing 208, thus improving ease of use. The AC input port 204, the DC input port 205, and the output port 206 are all exposed outside the housing 208, allowing the AC input port 204 to be connected to an AC power generation device 400, the DC input port 205 to be connected to a DC power generation device 500, and the output port 206 to be connected to an energy storage device 301.

[0058] Optionally, the operating component 20 is exposed on the front of the enclosure 208, facing the user for easy operation; the AC input port 204, DC input port 205, and output port 206 are all exposed on the bottom of the enclosure 208 to reduce the risk of water ingress and improve safety.

[0059] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. An interlocking device, characterized in that, The interlocking device is applied to a rectifier, which is equipped with a first switch and a second switch. The first switch and the second switch are respectively connected to different input sources and are configured to control the on / off state of the connected input sources. The interlocking device includes: The linkage mechanism includes a drive shaft, a driven shaft, a drive gear, and a driven gear. The drive gear is coaxially connected to the drive shaft, and the drive gear and the drive shaft rotate synchronously. The driven gear is coaxially connected to the driven shaft, and the driven gear and the driven shaft rotate synchronously. The drive gear meshes with the driven gear, causing the driven shaft to rotate with the drive shaft. The drive shaft is configured to control the on / off state of the first switch by rotation, and the driven shaft is configured to control the on / off state of the second switch by rotation. An operating element is connected to the drive shaft and is configured to drive the drive shaft to rotate and cause the driven shaft to rotate, such that when one of the first switch and the second switch is in the on state, the other is in the off state.

2. The interlocking device as described in claim 1, characterized in that: The interlocking device also includes a housing, the linkage mechanism is located inside the housing, the operating element is located outside the housing, and one end of the drive shaft extends out of the housing to connect to the operating element.

3. The interlocking device as described in claim 2, characterized in that: The driven shaft has an irregular cross-section, and / or the end face of the driven shaft is marked; the housing is provided with an exposure hole that exposes the end of the driven shaft.

4. The interlocking device as described in claim 3, characterized in that: The driven shaft has a notch in its cross-section, making the cross-section of the driven shaft irregular in shape. The shaft hole of the driven gear has a protrusion on its wall, which mates with the notch.

5. The interlocking device as described in claim 2, characterized in that: The housing includes a main shell and a protective cover. The protective cover is detachably disposed on the main shell. The protective cover and the main shell enclose a storage cavity. The driving gear and the driven gear are disposed in the storage cavity. One end of the driving shaft and the driven shaft are disposed in the main shell. The other end of the driven shaft is located in the storage cavity. The other end of the driving shaft extends out of the storage cavity to connect to the operating member. The operating member is disposed on the protective cover.

6. The interlocking device as described in claim 5, characterized in that: The interlocking device is further provided with multiple locking fasteners. The main housing is provided with multiple support columns, which support the protective cover. Each support column is provided with a mounting hole at one end near the protective cover. The protective cover is provided with multiple through holes, each through hole being aligned with one mounting hole. The aligned through holes and mounting holes are configured to install one locking fastener to fix the protective cover to the main housing.

7. The interlocking device as described in claim 6, characterized in that: The protective cover has a groove at each of the through holes, and each groove is configured to accommodate one of the locking fasteners.

8. A rectifier, characterized in that: The rectifier includes a first switch, a second switch, a rectifier bridge, an AC input port, a DC input port, an output port, and an interlocking device as described in any one of claims 1 to 7. The AC input port is electrically connected to the rectifier bridge, the rectifier bridge is electrically connected to the first switch, the second switch is electrically connected to the DC input port, the output port is electrically connected to the first switch and the second switch, and the interlocking device is used to selectively turn on the first switch or the second switch.

9. The rectifier as described in claim 8, characterized in that: The rectifier also includes a housing, in which the interlocking device, the first switch, the second switch, and the rectifier bridge are housed, while the operating element, the AC input port, the DC input port, and the output port are exposed outside the housing.

10. A combined device, characterized in that: The combined device includes an energy storage device and a rectifier as described in any one of claims 8-9. The energy storage device is provided with a DC interface, and the output port of the rectifier is electrically connected to the DC interface.

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