Disconnector, power conversion device and power supply system

Abstract

The application discloses an isolating switch, a power conversion device and a power supply system, and relates to the technical field of low-voltage electrical apparatuses. The isolating switch comprises an operating unit and a contact unit. The operating unit comprises a handle assembly, a moving mechanism, a first driving device and a second driving device. The first driving device and the second driving device can both drive the moving mechanism to be unlocked, so that the contact unit is opened. The first driving device cannot be reset through the handle assembly after the first driving device is actuated. The second driving device can be reset through the handle assembly after the second driving device is actuated. During the process in which the first driving device drives the moving mechanism to be unlocked, the first driving device can lock the handle assembly, or the first driving device can release linkage between the handle assembly and the second driving device, so that the handle assembly cannot drive the second driving device to be reset. The isolating switch, the power conversion device and the power supply system can solve the problem that, in the prior art, an operator is prone to misoperation to make the isolating switch be closed after a fault is tripped.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a disconnecting switch, a power conversion device, and a power supply system. Background Technology

[0002] In the field of photovoltaic power generation, the function of an inverter is to convert photovoltaic direct current into alternating current. Traditional inverters connect photovoltaic modules and internal power generation components through disconnect switches. With the technological updates and inverter version iterations in recent years, traditional disconnect switches have been gradually replaced by disconnect switches with remote tripping functions.

[0003] The remote trip disconnect switch can urgently disconnect the photovoltaic system from the internal power generation components in the event of a system fault, thereby protecting the photovoltaic power generation line. After the circuit maintenance is completed, the disconnect switch can be reset and closed using the handle exposed on the outside of the inverter, allowing the inverter to resume operation.

[0004] Because the operating handle is exposed on the outside of the inverter, there is a possibility that the circuit breaker may be accidentally closed without the user's knowledge or before the fault has been thoroughly investigated after the circuit breaker has tripped due to a fault, posing a safety hazard. Utility Model Content

[0005] The purpose of this application is to provide a disconnecting switch, a power conversion device, and a power supply system that can solve the problem in the prior art where operators are prone to misoperation and close the disconnecting switch after a fault trip.

[0006] The embodiments of this application are implemented as follows:

[0007] A first aspect of this application provides a disconnecting switch, including an operating unit and a contact unit. The operating unit includes a handle assembly, an actuating mechanism, a first driving device, and a second driving device. Both the first and second driving devices can drive the actuating mechanism to unlock, thereby opening the contact unit. After the first driving device is activated, it cannot be reset by the handle assembly, while after the second driving device is activated, it can be reset by the handle assembly. During the process of the first driving device driving the actuating mechanism to unlock, the first driving device can lock the handle assembly, or the first driving device can disengage the linkage between the handle assembly and the second driving device, so that the handle assembly cannot drive the second driving device to reset. This disconnecting switch can solve the problem in the prior art where, after a fault trip, the operator may easily misoperate and close the disconnecting switch.

[0008] As one possible implementation, the operating unit further includes a manual reset part, which can drive the first driving device to reset when driven to move; the handle assembly includes a handle shaft and a slide plate, which can drive the slide plate to slide when driven to rotate; after the second driving device drives the action mechanism to unlock, the slide plate moves in the reset direction; the slide plate is provided with an extension part, which can drive the second driving device to reset, so that the action mechanism can be re-engaged.

[0009] In one possible implementation, the operating unit further includes a locking component movably connected to the handle assembly. When the first driving device drives the actuation mechanism to unlock, the locking component moves toward the side closer to the handle assembly to lock the handle assembly. When the manual reset unit drives the first driving device to reset, the first driving device can drive the locking component to move toward the side away from the handle assembly, releasing the locking of the handle assembly and allowing the handle assembly to drive the second driving device to reset.

[0010] In one possible implementation, the skateboard is provided with a snap-fit ​​groove, and the locking assembly includes a locking plate that moves toward the side closest to the skateboard and inserts into the snap-fit ​​groove to lock the sliding of the skateboard.

[0011] In one possible implementation, the first driving device includes a first fixing member and a first driving member. The first driving member can slide out relative to the first fixing member to unlock the actuation mechanism. The manual reset part is disposed on the first driving member. The locking assembly further includes a locking spring, which is disposed on the side of the locking plate away from the slide plate. The first driving member is provided with a first guide part that abuts against the locking plate. When the first driving member is reset, the first guide part pushes the locking plate to move towards the side away from the slide plate and compresses the locking spring to store energy. When the first driving member slides out, the locking spring releases energy, which can drive the locking plate to insert into the snap-fit ​​groove.

[0012] In one possible implementation, the operating unit further includes a linkage component for linking the handle assembly and the second driving device. When the first driving device drives the action mechanism to unlock, the linkage component moves toward the side away from the second driving device, thereby releasing the linkage between the handle assembly and the second driving device. When the manual reset part drives the first driving device to reset, the first driving device can drive the linkage component to move toward the side closer to the second driving device, and the handle assembly and the second driving device regain linkage, enabling the handle assembly to drive the second driving device to reset.

[0013] In one possible implementation, the skateboard is provided with a connecting hole, and the linkage component includes a linkage shaft. The linkage shaft passes through the connecting hole along the line connecting the first driving device and the second driving device. The first end of the linkage shaft abuts against the first driving device. The linkage shaft moves toward the side away from the second driving device. The second end of the linkage shaft separates from the second driving device to release the linkage between the skateboard component and the second driving device.

[0014] In one possible implementation, the first driving device includes a first fixing member and a first driving member. The first driving member can slide out relative to the first fixing member to unlock the actuation mechanism. The manual reset part is disposed on the first driving member. The linkage assembly also includes a linkage spring. The first end of the linkage shaft is provided with an abutment part. The linkage spring is disposed between the abutment part and the slide plate. The first driving member is provided with a second guide part that abuts against the linkage shaft. When the first driving member is reset, the second guide part pushes the linkage shaft to move toward the side closer to the second driving device and compresses the linkage spring to store energy. When the first driving member slides out, the linkage spring releases energy, which can drive the second end of the linkage shaft to separate from the second driving device.

[0015] A second aspect of this application provides a power conversion device, including a chassis, a control unit, and the aforementioned disconnect switch. The handle assembly has a handle exposed outside the chassis for user operation. The control unit is electrically connected to the first drive device and the second drive device, and in the event of a line fault, sends a disconnection signal to the first drive device and / or the second drive device. This disconnect switch solves the problem in the prior art where, after a fault trip, the operator may easily misoperate and close the disconnect switch.

[0016] A third aspect of this application provides a power supply system including a power conversion device, a control unit, and the aforementioned disconnect switch. The disconnect switch is installed in the power conversion device. A handle assembly has a handle exposed outside the chassis of the power conversion device for user operation. The control unit is electrically connected to a first drive device and a second drive device via the power conversion device, and sends a disconnection signal to the first drive device and / or the second drive device when a line fault occurs. This disconnect switch solves the problem in the prior art where operators can easily misoperate and close the disconnect switch after a fault trip.

[0017] The beneficial effects of the embodiments of this application include:

[0018] This disconnecting switch includes an operating unit and a contact unit. The operating unit includes a handle assembly, an actuating mechanism, a first driving device, and a second driving device. Both the first and second driving devices can drive the actuating mechanism to unlock, thus opening the contact unit. After the first driving device actuates, it cannot be reset by the handle assembly, while the second driving device can be reset by the handle assembly. During the process of the first driving device unlocking the actuating mechanism, the first driving device can lock the handle assembly, or it can disengage the linkage between the handle assembly and the second driving device, preventing the handle assembly from driving the second driving device to reset. Compared to existing technologies, the disconnecting switch provided in this application prevents misoperation through multiple methods, allowing the disconnecting switch to remain open under fault conditions until the fault is properly resolved. This improves the reliability and stability of the disconnecting switch operation and reduces the probability of equipment damage and power outages caused by misoperation. By preventing the disconnecting switch from being closed due to operator error after a fault trip, it prevents potential electrical accidents such as short circuits and overloads that could damage equipment and personnel, ensuring the safe operation of the power system. By reducing equipment damage and malfunctions caused by misoperation, the frequency and cost of equipment maintenance are reduced accordingly, the service life of disconnect switches and related equipment is extended, and the overall operating efficiency of the power system is improved. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the disconnecting switch provided in an embodiment of this application;

[0021] Figure 2 A schematic diagram of the structure by which the locking assembly locks the handle assembly according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure by which the locking assembly releases the handle assembly according to an embodiment of this application;

[0023] Figure 4 One of the structural schematic diagrams of the restoration of linkage between the handle assembly and the second drive device provided in the embodiments of this application;

[0024] Figure 5 A second schematic diagram illustrating the structure for restoring linkage between the handle assembly and the second drive device according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram illustrating the disengagement of the handle assembly from the second drive device provided in an embodiment of this application.

[0026] Icons: 100-Isolating switch; 101-Contact unit; 102-Operating unit; 103-Handle assembly; 104-Actuating mechanism; 105-First drive device; 106-Second drive device; 107-First drive component; 109-Manual reset part; 110-Locking assembly; 111-Linkage assembly; 112-Handle shaft; 114-Slide plate; 1141-Extension; 115-Snap-fit ​​groove; 116-Locking plate; 117-Locking spring; 118-First guide part; 119-Housing; 121-Linkage shaft; 122-First end; 123-Second end; 124-Second guide part; 125-Linkage spring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "horizontal," "vertical," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. The terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In existing technology, disconnect switches contain only one remote tripping mechanism. When a fault occurs in the power supply circuit, the tripping signal sent by the power supply system will cause the remote tripping mechanism to trip. After troubleshooting, the operator can reset the remote tripping mechanism via a handle, thereby allowing the switch unit to reclose. However, for some complex faults, operators are prone to misjudgment, which may lead to more serious consequences after the power supply circuit is restored.

[0031] To solve the above problems, please refer to the following: Figures 1 to 6 This application provides a disconnecting switch 100, including an operating unit 102 and a contact unit 101. The operating unit 102 includes a handle assembly 103, an actuating mechanism 104, a first driving device 105, and a second driving device 106. Both the first driving device 105 and the second driving device 106 can drive the actuating mechanism 104 to unlock, thereby opening the contact unit 101. After the first driving device 105 is activated, it cannot be reset by the handle assembly 103, while after the second driving device 106 is activated, it can be reset by the handle assembly 103. During the process of the first driving device 105 driving the actuating mechanism 104 to unlock, the first driving device 105 can lock the handle assembly 103, or the first driving device 105 can release the linkage between the handle assembly 103 and the second driving device 106, so that the handle assembly 103 cannot drive the second driving device 106 to reset. This disconnecting switch 100 can solve the problem in the prior art where, after a fault trip, the operator is prone to misoperation, causing the disconnecting switch 100 to close.

[0032] It should be noted that, as Figure 1As shown, the disconnecting switch 100 includes an operating unit 102 and a contact unit 101, which are stacked sequentially. The operating unit 102 can drive the contact unit 101 to open or close, thereby enabling the disconnecting switch 100 to disconnect or connect the power circuit it is connected to. The operating unit 102 includes a handle assembly 103, an actuating mechanism 104, a first driving device 105, and a second driving device 106. The handle assembly 103 is driven by the moving contact of the contact unit 101 through the actuating mechanism 104, so that the moving contact can be driven by the actuating mechanism 104 to move toward the side away from or closer to the stationary contact of the contact unit 101, thereby realizing the opening and closing actions.

[0033] Specifically, both the first drive device 105 and the second drive device 106 can drive the actuation mechanism 104 to unlock, thereby opening the contact unit 101. When the disconnecting switch 100 is unlocked by the actuation mechanism 104 driven by the first drive device 105 to open the contact unit 101 due to a fault or other reasons, since the first drive device 105 itself cannot be reset by the handle assembly 103, this can prevent the operator from accidentally resetting the first drive device 105 by the handle assembly 103 without addressing the fault, thus preventing the disconnecting switch 100 from being closed by mistake.

[0034] When the disconnector switch 100 is unlocked by the second drive device 106 driving the actuation mechanism 104 due to a malfunction or other reasons, so that the contact unit 101 is opened, the second drive device 106 could originally be reset by the handle assembly 103. In this application, during the unlocking process of the first drive device 105 driving the actuation mechanism 104, the first drive device 105 can lock the handle assembly 103, directly restricting the operation of the handle assembly 103, so that the operator cannot perform the closing operation by the handle assembly 103; or, the first drive device 105 can disengage the linkage between the handle assembly 103 and the second drive device 106, so that even if the operator operates the handle assembly 103, the second drive device 106 cannot be reset, and thus the disconnector switch 100 cannot be closed, thus preventing the closing caused by misoperation from multiple aspects.

[0035] Compared to existing technologies, the disconnector switch 100 provided in this application prevents misoperation through multiple methods, enabling it to remain open under fault conditions until the fault is properly resolved. This improves the reliability and stability of the disconnector switch 100's operation and reduces the probability of equipment damage and power outages caused by misoperation. By preventing operator error from closing the disconnector switch 100 after a fault trip, potential electrical accidents such as short circuits and overloads can be avoided, thus protecting equipment and personnel and ensuring the safe operation of the power system. Furthermore, the reduction in equipment damage and malfunctions due to misoperation correspondingly lowers the frequency and cost of equipment maintenance, extends the service life of the disconnector switch 100 and related equipment, and improves the overall operating efficiency of the power system.

[0036] As one possible implementation method, such as Figure 1 As shown, the operation unit 102 also includes a manual reset part 109. The manual reset part 109 can drive the first drive device 105 to reset when driven to move. The handle assembly 103 includes a handle shaft 112 and a slide plate 114. The handle shaft 112 can drive the slide plate 114 to slide when driven to rotate. After the second drive device 106 drives the action mechanism 104 to unlock, the slide plate 114 moves in the reset direction. The slide plate 114 is provided with an extension part 1141, which can drive the second drive device 106 to reset, so that the action mechanism 104 can be re-engaged.

[0037] It should be noted that when the disconnector 100 trips due to certain reasons (such as fault tripping), causing the contact unit 101 to open via the action of the first drive device 105, the first drive device 105 cannot be reset via the handle assembly 103. Only when the manual reset part 109 is driven can the first drive device 105 be reset, preparing for the reclosing operation of the disconnector 100. This design ensures that the reset of the first drive device 105 is performed under appropriate conditions, such as conscious human intervention and confirmation that the fault has been eliminated, avoiding the risks that automatic reset may bring. For example, the housing 119 of the operating unit 102 is provided with a through hole, and the manual reset part 109 passes through the through hole. When the first drive device 105 drives the action mechanism 104 to unlock, the manual reset part 109 may or may not protrude from the surface of the housing 119. The user can directly drive the manual reset part 109 or drive the manual reset part 109 with the help of a tool to reset the first drive device 105.

[0038] When the disconnector switch 100 trips due to some reason (such as a fault trip), causing the contact unit 101 to open via the second drive device 106, the second drive device 106 could originally be reset via the handle assembly 103. Specifically, the handle assembly 103 consists of a handle shaft 112 and a slide plate 114. When the handle shaft 112 is driven to rotate by an external force, this rotation is converted into the sliding of the slide plate 114. The linear movement of the slide plate 114 is achieved through the rotational movement of the handle shaft 112, thereby controlling the synchronous movement of the extension 1141 on the slide plate 114, which in turn drives the second drive device 106 to reset, causing the actuation mechanism 104 to re-engage.

[0039] As one possible implementation method, such as Figure 2 and Figure 3 As shown, in some embodiments, the operation unit 102 further includes a locking component 110 movably connected to the handle assembly 103. When the first drive device 105 drives the action mechanism 104 to unlock, the locking component 110 moves toward the side closer to the handle assembly 103 to lock the handle assembly 103. When the manual reset unit 109 drives the first drive device 105 to reset, the first drive device 105 can drive the locking component 110 to move toward the side away from the handle assembly 103, releasing the lock on the handle assembly 103, so that the handle assembly 103 can drive the second drive device 106 to reset.

[0040] It should be noted that the locking component 110 in the operating unit 102 is movably connected to the handle assembly 103. When the first drive device 105 drives the actuation mechanism 104 to unlock, causing the contact unit 101 to open, the locking component 110 moves towards the side closer to the handle assembly 103, thereby locking the handle assembly 103. This means that after the disconnecting switch 100 is opened by the first drive device 105 due to a fault or other reasons, the handle assembly 103 is restricted by the locking component 110 and cannot be closed, thus avoiding misoperation. The locking of the handle assembly 103 by the locking component 110 further enhances the disconnecting switch 100's ability to prevent misoperation. After the first drive device 105 opens, even if the operator accidentally touches or attempts to operate the handle assembly 103, the handle assembly 103 cannot be moved due to the action of the locking component 110, thereby eliminating the possibility of the disconnecting switch 100 closing before the fault is cleared due to misoperation, and improving the safety of the power system.

[0041] When the manual reset unit 109 resets the first drive device 105, the first drive device 105 drives the locking assembly 110 to move away from the handle assembly 103. This releases the locking assembly 110 from the handle assembly 103, allowing the handle assembly 103 to normally drive the second drive device 106 to reset, preparing for the reclosing of the disconnect switch 100. Only under the specific condition that the manual reset unit 109 resets the first drive device 105 will the locking assembly 110 release its lock on the handle assembly 103, allowing the handle assembly 103 to drive the second drive device 106 to reset and perform the closing operation. The entire process, through the coordinated action of the components, achieves effective locking of the handle assembly 103 after a fault trip and unlocking via manual reset after the fault is cleared, enabling normal operation. This design requires operators to perform a reset operation via the manual reset unit 109 before performing the closing operation to confirm that the fault has been cleared, ensuring adherence to the correct operating procedure, helping to standardize operational behavior and reduce operational errors.

[0042] As one possible implementation method, such as Figure 2 and Figure 3 As shown, the slide plate 114 is provided with a snap-fit ​​groove 115, and the locking assembly 110 includes a locking plate 116. The locking plate 116 moves toward the side closer to the slide plate 114 and inserts into the snap-fit ​​groove 115 to lock the slide plate 114.

[0043] It should be noted that when the first drive device 105 drives the action mechanism 104 to unlock, the locking plate 116 inserts into the locking slot 115 on the slide plate 114. Because the locking plate 116 inserts into the locking slot 115, it restricts the sliding of the slide plate 114. Since the sliding of the slide plate 114 is related to the rotation of the handle shaft 112, it indirectly locks the handle assembly 103, preventing the handle shaft 112 from rotating to drive the slide plate 114 to slide, thus preventing the disconnector switch 100 from performing a closing operation at an inappropriate time. The design of the handle shaft 112 driving the slide plate 114 to slide, along with the cooperation of the locking plate 116 and the locking slot 115, allows the operator to intuitively control the state of the disconnector switch 100 by rotating the handle shaft 112. Furthermore, when locking is required, the operator can clearly see the locking plate 116 inserting into the locking slot 115 to achieve locking. This intuitive operation method and reliable locking structure help the operator accurately judge the state of the disconnector switch 100, reduce operational errors, and improve the safety and operability of the equipment.

[0044] As one possible implementation method, such as Figure 2 and Figure 3As shown, the first driving device 105 includes a first fixing member and a first driving member 107. The first driving member 107 can slide out relative to the first fixing member to unlock the actuation mechanism 104. The first driving member 107 is provided with a manual reset part 109. The locking assembly 110 also includes a locking spring 117. The locking spring 117 is provided on the side of the locking plate 116 away from the slide plate 114. The first driving member 107 is provided with a first guide part 118 that abuts against the locking plate 116. When the first driving member 107 is reset, the first guide part 118 pushes the locking plate 116 to move toward the side away from the slide plate 114 and compresses the locking spring 117 to store energy. When the first driving member 107 slides out, the locking spring 117 releases energy, which can drive the locking plate 116 to insert into the snap-fit ​​groove 115.

[0045] It should be noted that the first driving device 105 consists of a first fixing member and a first driving member 107. The first driving member 107 can slide out relative to the first fixing member. When it is necessary to unlock the actuation mechanism 104 of the disconnecting switch 100 and open the contact unit 101, the first driving member 107 will slide out relative to the first fixing member from its initial position under the corresponding triggering conditions, such as fault signal triggering, thereby pushing the actuation mechanism 104 to unlock it and realize the opening operation of the disconnecting switch 100. The first driving member 107 is provided with a manual reset part 109. By operating the manual reset part 109, the user can drive the first driving member 107 to move back to its initial position in the reset direction, so that the actuation mechanism 104 can be re-engaged. In the actual manufacturing process, the first driving member 107 and the manual reset part 109 can be integrally molded by injection molding. Similarly, the second driving device 106 includes a second fixing member and a second driving member. The second driving member can slide out relative to the second fixing member to unlock the actuation mechanism 104.

[0046] The locking spring 117 in the locking assembly 110 is located on the side of the locking plate 116 away from the slide plate 114. The first drive member 107 is provided with a first guide portion 118. When the first drive member 107 is reset, the first guide portion 118 abuts against the locking plate 116 and pushes the locking plate 116 to move away from the slide plate 114. During this process, the locking spring 117 is compressed and stores energy. When the first drive member 107 slides out, the locking spring 117 releases the stored energy and generates a spring force to drive the locking plate 116 to move quickly towards the slide plate 114, so that it inserts into the snap-fit ​​groove 115 on the slide plate 114, thereby locking the slide plate 114 in the handle assembly 103, preventing the handle shaft 112 from rotating and causing the slide plate 114 to slide, and preventing the isolating switch 100 from closing at an inappropriate time. By storing and releasing energy in the locking spring 117, the locking plate 116 can quickly insert into the snap-fit ​​groove 115 when the first driving member 107 slides out, achieving fast and effective locking. This method of using spring force can complete the locking action in a short time, improving the response speed and safety of the disconnecting switch 100, and ensuring that it can promptly prevent closing caused by misoperation after opening.

[0047] As one possible implementation method, such as Figures 4 to 6 As shown, in some other embodiments, the operation unit 102 further includes a linkage component 111 for linking the handle assembly 103 and the second drive device 106. When the first drive device 105 drives the action mechanism 104 to unlock, the linkage component 111 moves toward the side away from the second drive device 106, releasing the linkage between the handle assembly 103 and the second drive device 106. When the manual reset part 109 drives the first drive device 105 to reset, the first drive device 105 can drive the linkage component 111 to move toward the side closer to the second drive device 106, and the handle assembly 103 and the second drive device 106 resume linkage, so that the handle assembly 103 can drive the second drive device 106 to reset.

[0048] It should be noted that the linkage component 111 in the operating unit 102 is mainly used to link the handle assembly 103 and the second drive device 106. Under normal circumstances, when the operator operates the handle assembly 103, the movement of the handle assembly 103 is transmitted to the second drive device 106 through the linkage component 111, so that the second drive device 106 can move accordingly following the movement of the handle assembly 103, thereby realizing the normal closing or opening operation of the disconnecting switch 100.

[0049] When the first drive device 105 unlocks the actuation mechanism 104, causing the disconnector switch 100 to open due to a malfunction or other reason, the linkage component 111 will move away from the second drive device 106. This movement prevents the linkage component 111 from effectively transmitting the movement of the handle assembly 103, thereby disengaging the linkage between the handle assembly 103 and the second drive device 106. Therefore, even if the operator accidentally operates the handle assembly 103 at this time, since the linkage has been disengaged, the second drive device 106 will not operate accordingly, thus preventing the disconnector switch 100 from closing and avoiding the danger caused by misoperation.

[0050] When the manual reset unit 109 resets the first drive device 105, the first drive device 105 further drives the linkage component 111 to move towards the side closer to the second drive device 106. As the linkage component 111 returns to its original position, the linkage relationship between the handle assembly 103 and the second drive device 106 is also restored. At this time, when the operator operates the handle assembly 103 again, the linkage component 111 can drive the second drive device 106 to reset, preparing for the reclosing of the disconnect switch 100.

[0051] When a fault occurs, the linkage component 111 automatically disengages the linkage between the handle assembly 103 and the second drive device 106, fundamentally eliminating the possibility of the disconnector switch 100 closing before the fault is cleared due to misoperation of the handle assembly 103. This greatly enhances the anti-misoperation capability of the disconnector switch 100, effectively ensuring the safe operation of the power system and avoiding serious accidents such as short circuits and equipment damage that may be caused by accidental closing.

[0052] As one possible implementation method, such as Figures 4 to 6 As shown, the slide plate 114 is provided with a connection hole, and the linkage assembly 111 includes a linkage shaft 121. The linkage shaft 121 passes through the connection hole along the line connecting the first drive device 105 and the second drive device 106. The first end 122 of the linkage shaft 121 abuts against the first drive device 105. The linkage shaft 121 moves toward the side away from the second drive device 106. The second end 123 of the linkage shaft 121 separates from the second drive device 106 to release the linkage between the slide plate 114 and the second drive device 106.

[0053] It should be noted that the core component of the linkage assembly 111 is the linkage shaft 121, which passes through the connecting hole of the slide plate 114 along the line connecting the first drive device 105 and the second drive device 106. Under normal operating conditions, the linkage shaft 121 connects the handle assembly 103 (via the slide plate 114) and the second drive device 106. When the handle shaft 112 drives the slide plate 114 to slide, the slide plate 114, through the connection hole, engages with the linkage shaft 121, causing the linkage shaft 121 to move together. This causes the second end 123 of the linkage shaft 121 to act on the second drive device 106, thus achieving linkage between the handle assembly 103 and the second drive device 106, completing the normal closing or opening operation of the disconnector switch 100.

[0054] When the first drive device 105 unlocks the actuation mechanism 104, causing the disconnect switch 100 to open, the first drive device 105 pushes the linkage shaft 121 to move away from the second drive device 106. Since the linkage shaft 121 passes through the connection hole of the slide plate 114, its second end 123 separates from the second drive device 106 as the linkage shaft 121 moves. At this time, even if the handle shaft 112 continues to drive the slide plate 114 to slide, because the second end 123 of the linkage shaft 121 has disengaged from the second drive device 106, it cannot transmit the movement of the slide plate 114 to the second drive device 106, thus releasing the linkage between the handle assembly 103 and the second drive device 106, preventing accidental closing due to misoperation.

[0055] When the manual reset unit 109 drives the first drive device 105 to reset, the first drive device 105 will drive the linkage shaft 121 to move towards the side closer to the second drive device 106, so that the second end 123 of the linkage shaft 121 is reconnected to the second drive device 106, restoring the linkage relationship between the handle assembly 103 and the second drive device 106. In this way, the handle assembly 103 can drive the second drive device 106 to perform a reset operation through the linkage shaft 121, preparing for the re-closing of the circuit breaker.

[0056] As one possible implementation method, such as Figures 4 to 6As shown, the first driving device 105 includes a first fixing member and a first driving member 107. The first driving member 107 can slide out relative to the first fixing member to unlock the actuation mechanism 104. The first driving member 107 is provided with a manual reset part 109. The linkage assembly 111 also includes a linkage spring 125. The first end 122 of the linkage shaft 121 is provided with an abutment part. The linkage spring 125 is disposed between the abutment part and the slide plate 114. The first driving member 107 is provided with a second guide part 124 that abuts against the linkage shaft 121. When the first driving member 107 is reset, the second guide part 124 pushes the linkage shaft 121 toward the side closer to the second driving device 106 and compresses the linkage spring 125 to store energy. When the first driving member 107 slides out, the linkage spring 125 releases energy, which can drive the second end 123 of the linkage shaft 121 to separate from the second driving device 106.

[0057] It should be noted that the first driving device 105 consists of a first fixing member and a first driving member 107. The first driving member 107 can slide out relative to the first fixing member. When it is necessary to unlock the actuation mechanism 104 of the disconnecting switch 100 and open the contact unit 101, the first driving member 107 will slide out relative to the first fixing member from its initial position under the corresponding triggering conditions, such as fault signal triggering, thereby pushing the actuation mechanism 104 to unlock it and realize the opening operation of the disconnecting switch 100. The first driving member 107 is provided with a manual reset part 109. By operating the manual reset part 109, the user can drive the first driving member 107 to move back to its initial position in the reset direction, so that the actuation mechanism 104 can be re-engaged. In the actual manufacturing process, the first driving member 107 and the manual reset part 109 can be integrally molded by injection molding. Similarly, the second driving device 106 includes a second fixing member and a second driving member. The second driving member can slide out relative to the second fixing member to unlock the actuation mechanism 104.

[0058] One end of the linkage shaft 121 in the linkage assembly 111 is provided with an abutment portion, and the linkage spring 125 is located between the abutment portion and the slide plate 114. A second guide portion 124 is provided on the first drive member 107. When the first drive member 107 is not activated, the second guide portion 124 contacts the abutment portion of the linkage shaft 121 and pushes it to move. During this process, the linkage spring 125 is compressed, storing energy. Simultaneously, the linkage shaft 121 moves towards the side closer to the second drive device 106 under the push of the second guide portion 124, ensuring that during normal operation, the handle assembly 103 can effectively drive the second drive device 106 through the linkage shaft 121, realizing the normal closing or opening of the disconnect switch 100.

[0059] When the first drive component 107 slides out, the previously compressed linkage spring 125 begins to release energy, and the resulting elastic force pushes the linkage shaft 121 to move away from the second drive device 106. As the linkage shaft 121 moves, its second end 123 gradually separates from the second drive device 106, thereby cutting off the linkage between the handle assembly 103 and the second drive device 106. This means that even if the operator accidentally operates the handle shaft 112 at this time, the second drive device 106 will not respond because the linkage has been released, effectively preventing the isolating switch 100 from closing before the fault is cleared.

[0060] As the manual reset unit 109 drives the first drive device 105 to its initial position, the second guide portion 124 on the first drive member 107 re-contacts the abutment portion of the linkage shaft 121 and pushes the linkage shaft 121, compressing the linkage spring 125. This causes the linkage shaft 121 to move back towards the side closer to the second drive device 106, preparing for the handle assembly 103 and the second drive device 106 to resume their linkage relationship. Once the first drive device 105 is fully reset, the second end 123 of the linkage shaft 121 is reconnected to the second drive device 106, and the handle assembly 103 can again drive the second drive device 106 for normal operation via the linkage shaft 121.

[0061] This application also provides a power conversion device, including a chassis, a control unit, and the aforementioned disconnect switch 100. A handle assembly 103 is provided with a handle exposed outside the chassis for user operation. The control unit is electrically connected to a first drive device 105 and a second drive device 106, and is used to send a disconnection signal to the first drive device 105 and / or the second drive device 106 when a line fault occurs. Since the structure and beneficial effects of the disconnect switch 100 have been described in detail in the foregoing embodiments, they will not be repeated here.

[0062] This application embodiment also provides a power supply system, including a power conversion device, a control unit, and the aforementioned disconnect switch. The disconnect switch 100 is installed in the power conversion device. A handle assembly 103 has a handle exposed outside the chassis for user operation. The control unit is electrically connected to the first drive device 105 and the second drive device 106 through the power conversion device, and is used to send a disconnection signal to the first drive device 105 and / or the second drive device 106 when a line fault occurs. Since the structure and beneficial effects of the power conversion device have been described in detail in the foregoing embodiments, they will not be repeated here.

[0063] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0064] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

Claims

1. A disconnecting switch, characterized in that, The device includes an operating unit (102) and a contact unit (101). The operating unit (102) includes a handle assembly (103), an actuation mechanism (104), a first drive device (105), and a second drive device (106). Both the first drive device (105) and the second drive device (106) can drive the actuation mechanism (104) to unlock, so that the contact unit (101) can open. After the first drive device (105) is activated, it cannot be reset by the handle assembly (103), while after the second drive device (106) is activated, it can be reset by the handle assembly (103). During the process of the first drive device (105) driving the actuation mechanism (104) to unlock, the first drive device (105) can lock the handle assembly (103), or the first drive device (105) can release the linkage between the handle assembly (103) and the second drive device (106), so that the handle assembly (103) cannot drive the second drive device (106) to reset.

2. The disconnecting switch according to claim 1, characterized in that, The operating unit (102) further includes a manual reset part (109), which can drive the first drive device (105) to reset when driven to move. The handle assembly (103) includes a handle shaft (112) and a slide plate (114). The handle shaft (112) can drive the slide plate (114) to slide when driven to rotate. After the second drive device (106) drives the action mechanism (104) to unlock, the slide plate (114) moves in the reset direction. The slide plate (114) is provided with an extension part (1141), which can drive the second drive device (106) to reset, so that the action mechanism (104) can be re-engaged.

3. The disconnecting switch according to claim 2, characterized in that, The operating unit (102) further includes a locking component (110) movably connected to the handle assembly (103). When the first driving device (105) drives the action mechanism (104) to unlock, the locking component (110) moves toward the side closer to the handle assembly (103) to lock the handle assembly (103). When the manual reset part (109) drives the first driving device (105) to reset, the first driving device (105) can drive the locking component (110) to move toward the side away from the handle assembly (103) to release the lock on the handle assembly (103) and enable the handle assembly (103) to drive the second driving device (106) to reset.

4. The disconnecting switch according to claim 3, characterized in that, The slide plate (114) is provided with a snap-fit ​​groove (115), and the locking assembly (110) includes a locking plate (116). The locking plate (116) moves toward the side closer to the slide plate (114) and inserts into the snap-fit ​​groove (115) to lock the sliding of the slide plate (114).

5. The disconnecting switch according to claim 4, characterized in that, The first driving device (105) includes a first fixing member and a first driving member (107). The first driving member (107) can slide out relative to the first fixing member to unlock the actuation mechanism (104). The first driving member (107) is provided with the manual reset part (109). The locking assembly (110) also includes a locking spring (117). The locking spring (117) is located on the side of the locking plate (116) away from the sliding plate (114). The driving member (107) is provided with a first guide portion (118) that abuts against the locking plate (116). When the first driving member (107) is reset, the first guide portion (118) pushes the locking plate (116) to move toward the side away from the sliding plate (114) and compresses the locking spring (117) to store energy. When the first driving member (107) slides out, the locking spring (117) releases energy, which can drive the locking plate (116) to insert into the snap-fit ​​groove (115).

6. The disconnecting switch according to claim 2, characterized in that, The operation unit (102) further includes a linkage component (111) for linking the handle assembly (103) and the second drive device (106). When the first drive device (105) drives the action mechanism (104) to unlock, the linkage component (111) moves toward the side away from the second drive device (106), releasing the linkage between the handle assembly (103) and the second drive device (106). When the manual reset part (109) drives the first drive device (105) to reset, the first drive device (105) can drive the linkage component (111) to move toward the side closer to the second drive device (106), and the handle assembly (103) and the second drive device (106) resume linkage, so that the handle assembly (103) can drive the second drive device (106) to reset.

7. The disconnecting switch according to claim 6, characterized in that, The slide plate (114) is provided with a connection hole. The linkage component (111) includes a linkage shaft (121). The linkage shaft (121) passes through the connection hole along the line connecting the first drive device (105) and the second drive device (106). The first end (122) of the linkage shaft (121) abuts against the first drive device (105). The linkage shaft (121) moves toward the side away from the second drive device (106). The second end (123) of the linkage shaft (121) separates from the second drive device (106) to release the linkage between the slide plate (114) and the second drive device (106).

8. The disconnecting switch according to claim 7, characterized in that, The first driving device (105) includes a first fixing member and a first driving member (107). The first driving member (107) can slide out relative to the first fixing member to unlock the actuation mechanism (104). The first driving member (107) is provided with the manual reset part (109). The linkage assembly (111) also includes a linkage spring (125). The first end (122) of the linkage shaft (121) is provided with an abutment part. The linkage spring (125) is disposed between the abutment part and the slide plate (114). A second guide portion (124) is provided on a drive member (107) and abuts against the linkage shaft (121). When the first drive member (107) is reset, the second guide portion (124) pushes the linkage shaft (121) to move toward the side closer to the second drive device (106) and compresses the linkage spring (125) to store energy. When the first drive member (107) slides out, the linkage spring (125) releases energy, which can drive the second end (123) of the linkage shaft (121) to separate from the second drive device (106).

9. A power conversion device, characterized in that, The device includes a chassis, a control unit, and an isolating switch (100) as described in any one of claims 1 to 8. The handle assembly (103) is provided with a handle exposed outside the chassis for user operation. The control unit is electrically connected to the first drive device (105) and the second drive device (106) and is used to send a disconnection signal to the first drive device (105) and / or the second drive device (106) when a line fault occurs.

10. A power supply system, characterized in that, The device includes a power conversion device, a control unit, and a disconnect switch (100) as described in any one of claims 1-8. The disconnect switch (100) is installed in the power conversion device. The handle assembly (103) is provided with a handle exposed outside the chassis of the power conversion device for user operation. The control unit is electrically connected to the first drive device (105) and the second drive device (106) through the power conversion device and is used to send a disconnection signal to the first drive device (105) and / or the second drive device (106) when a line fault occurs.

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