Isolation switch, power conversion device and power supply system

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to an isolating switch, a power conversion device and a power supply system. The operation unit comprises a handle assembly, an action mechanism, a first driving device and a second driving device; a first driving piece is arranged on the first driving device; a second driving piece is arranged on the second driving device; and the first driving device is electrified to enable the first driving piece to move close to the action mechanism, so that the action mechanism is driven to be tripped, and the contact unit is driven to be switched off through the action mechanism. By means of the arrangement that the second driving device needs to be reset manually, false triggering is avoided, the operation safety is effectively improved, and the damage risk caused by false triggering of equipment is reduced.

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] Traditional disconnect switches in inverters are gradually being replaced by disconnect switches with remote tripping capabilities. When the system detects faults such as overload or short circuit, the disconnect switch with a remote tripping unit can quickly control the moving contact to open and cut off the current via a flux trip unit, protecting the safety of electrical equipment and lines. Existing disconnect switches typically use a single drive unit, achieving tripping regardless of whether a simple or complex fault occurs. After the circuit fault is resolved, the disconnect switch is manually reset and closed using a handle exposed on the outside of the housing, allowing the inverter to resume operation.

[0003] When faced with complex circuit faults, the troubleshooting work performed by staff is quite complicated. The lack of targeted fault handling mechanisms can lead to frequent false triggers or failure to cut off current in a timely manner. This not only increases the frequency of system maintenance but may also increase the risk of equipment damage, thereby raising overall operating costs. Utility Model Content

[0004] The purpose of this application is to provide a disconnecting switch, a power conversion device, and a power supply system, which avoids accidental triggering by requiring manual reset of the second drive device, thereby not only effectively improving operational safety but also reducing the risk of equipment damage caused by accidental triggering.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, embodiments of this application provide a disconnecting switch, including a contact unit and an operating unit; the operating unit includes a handle assembly, an actuating mechanism, a first driving device, and a second driving device; a first driving element is disposed on the first driving device; and a second driving element is disposed on the second driving device.

[0007] When the first driving device is powered on, the first driving member moves close to the actuating mechanism, drives the actuating mechanism to disengage, and drives the contact unit to open through the actuating mechanism; after power is cut off, the first driving member moves in the opposite direction to achieve automatic reset.

[0008] Alternatively, the second drive device is energized to move the second drive member closer to the actuating mechanism, driving the actuating mechanism to trip, and the actuating mechanism drives the contact unit to open.

[0009] As an optional implementation, the second driving member is provided with a manual reset part; after power is cut off, the manual reset part is subjected to force to make the second driving member move in the opposite direction to achieve reset.

[0010] As an optional implementation, it also includes a locking component that cooperates with the handle assembly; the second drive member is provided with a manual reset part, when the actuation mechanism is disengaged, the second drive member drives the locking component to lock the handle assembly, generating a force that prevents the handle assembly from rotating; the manual reset part is subjected to force to cause the second drive member to move in the opposite direction to achieve reset, at the same time, the second drive member drives the locking component to release the lock on the handle assembly, so that the handle assembly can be driven to rotate to achieve re-locking of the actuation mechanism.

[0011] As an optional implementation, it also includes a locking component that cooperates with the handle assembly; when the actuation mechanism is disengaged, the second drive member drives the locking component to lock the handle assembly, generating a force that prevents the handle assembly from rotating; after power failure, the second drive member moves in the opposite direction to achieve automatic reset; the locking component maintains the locked state of the handle assembly.

[0012] As an optional implementation, the operating unit further includes a linkage component for linking the first driving device and the handle assembly; when the actuation mechanism is disengaged, the second driving member drives the linkage component to move, thereby releasing the linkage between the first driving device and the handle assembly; when the manual reset part is subjected to force to move the second driving member in the opposite direction to achieve reset, the second driving member drives the linkage component to move, and the first driving device and the handle assembly resume linkage, so that the handle assembly can be driven to rotate to achieve re-engagement of the actuation mechanism.

[0013] As an optional implementation, the handle assembly includes a handle shaft and a slide plate; the slide plate has a mounting hole; the linkage assembly includes a sliding shaft that slides through the mounting hole; a first end of the sliding shaft is close to a first driving device, and a second end is close to a second driving device; the second driving member has a second guide portion that abuts against the second end, and when the second driving member moves in the reverse direction, the second guide portion pushes the sliding shaft axially closer to the first driving device; when the handle shaft drives the slide plate to slide, the first end abuts against the first driving member and pushes the first driving member to move in the reverse direction to achieve a reset, at which time the operating mechanism is in a re-locked state.

[0014] As an optional implementation, the second end is provided with a blocking part, and a spring element is provided between the blocking part and the sliding plate; when the sliding shaft approaches the first driving device along the axial direction, the blocking part compresses the spring element to store elastic potential energy;

[0015] When the second driving member moves forward and disengages, the spring element releases its elastic potential energy, causing the first end to move away from the first driving device.

[0016] As an optional implementation, the handle assembly includes a handle shaft and a slide plate; when the handle shaft is driven to rotate, it causes the slide plate to slide in a straight line, and the slide plate is provided with a slot; the locking assembly includes a locking plate, which is inserted into the slot to generate a force that prevents the slide plate from sliding.

[0017] As an optional implementation, the locking assembly further includes a locking spring; the locking spring and the sliding plate are respectively disposed on opposite sides of the locking plate; the second driving member is provided with a first guide portion that abuts against the locking plate; when the second driving member moves in the reverse direction, the first guide portion pushes the locking plate away from the sliding plate, causing the locking plate to separate from the slot and compressing the locking spring; when the second driving member moves in the forward direction to disengage, the locking spring pushes the locking plate to insert into the slot.

[0018] As an optional implementation, the operating unit further includes a housing, with both the first driving device and the second driving device disposed inside the housing; a reset window is provided on the housing; and the manual reset part extends through the reset window to the outside of the housing.

[0019] Secondly, embodiments of this application provide a power conversion device, a chassis, a control unit, and the aforementioned disconnect switch; the handle assembly has a knob exposed outside the chassis for user operation; the control unit is electrically connected to the first drive device and the second drive device, and is used to send a trip signal to the first drive device and the second drive device when a line fault occurs.

[0020] Thirdly, this application provides a power supply system, a power conversion device, a control unit, and the aforementioned disconnecting switch; the disconnecting switch is installed in the power conversion device, the handle assembly has a knob exposed outside the power conversion device, and the control unit is electrically connected to the first drive device and the second drive device through the power conversion device to send a trip signal to the first drive device and the second drive device when a line fault occurs.

[0021] The beneficial effects of the embodiments of this application include:

[0022] The disconnect switch provided in this application, by introducing a first driving device and a second driving device, can achieve more precise fault response by selecting different tripping mechanisms according to the type of fault. For simple overload situations, the first driving device is used to quickly cut off the current; while for more complex faults, the second driving device is activated to ensure that a reset operation is only performed after the fault has been confirmed to be resolved. Since complex faults require manual pressing of the manual reset part to reset the second driving component, this method effectively reduces the risk of misoperation caused by automatic reset, ensuring that the circuit is only reconnected after the fault has been truly eliminated, thereby improving the safety and reliability of the system.

[0023] The power conversion device provided in this application includes a chassis, a control unit, and the aforementioned disconnect switch; the handle assembly has a knob 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, it sends a trip signal to the first drive device and the second drive device; the disconnect switch can quickly cut off the current, protect the internal components of the device and other electrical equipment from damage, and increase the reliability of the entire system.

[0024] The power supply system provided in this application embodiment, by integrating the aforementioned isolating switch, exhibits significant advantages in terms of safety, system reliability, user experience, and overall performance. It not only improves the system's operating efficiency and lifespan but also provides users with a safer, more reliable, and easier-to-maintain technical solution, thus ensuring the safety of the power supply system. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the structure of the disconnecting switch according to an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the locking assembly locking the handle assembly according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the locking assembly unlocking the handle assembly according to an embodiment of this application;

[0029] Figure 4 This is one of the structural schematic diagrams of the first driving device and the handle assembly restoring linkage according to an embodiment of this application;

[0030] Figure 5 This is a second schematic diagram of the structure of the first driving device and the handle assembly restoring linkage in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of the first driving device and the handle assembly being decoupled in an embodiment of this application.

[0032] icon:

[0033] 100-Disconnecting switch; 101-Contact unit; 102-Operating unit; 103-Handle assembly; 104-Actuating mechanism; 105-First driving device; 106-Second driving device; 107-First driving component; 108-Second driving component; 109-Manual reset part; 110-Locking assembly; 111-Linkage assembly; 112-Handle shaft; 114-Slide plate; 115-Slot; 116-Locking plate; 117-Locking spring; 118-First guide part; 119-Housing; 120-Reset window; 121-Sliding shaft; 122-First end; 123-Second end; 124-Second guide part; 125-Spring element. Detailed Implementation

[0034] 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, and 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.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] 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 the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] Traditional disconnect switches 100 in inverters are gradually being replaced by disconnect switches 100 with remote tripping functions. When the system detects faults such as overload or short circuit, the disconnect switch 100 with a remote tripping unit can quickly control the moving contact to open and cut off the current through a flux trip device, protecting the safety of electrical equipment and lines. Existing disconnect switches 100 typically have a single drive device, which is used to open the circuit regardless of whether a simple or complex fault occurs. After the circuit fault is resolved, the disconnect switch 100 can be manually reset and closed using a handle exposed on the outside of the housing 119, allowing the inverter to resume operation.

[0039] When faced with complex circuit faults, the troubleshooting work performed by staff is quite complicated. The lack of targeted fault handling mechanisms can lead to frequent false triggers or failure to cut off current in a timely manner. This not only increases the frequency of system maintenance but may also increase the risk of equipment damage, thereby raising overall operating costs.

[0040] To address the aforementioned technical problems, embodiments of this application provide an isolating switch 100, an inverter, and a power supply system.

[0041] Reference Figure 1 As shown, this application embodiment provides a disconnecting switch 100, including a contact unit 101 and an operating unit 102; the operating unit 102 includes a handle assembly 103, an actuation mechanism 104, a first driving device 105 and a second driving device 106; a first driving member 107 is disposed on the first driving device 105; a second driving member 108 is disposed on the second driving device 106.

[0042] When the first driving device 105 is energized, the first driving member 107 moves in a straight line to drive the action mechanism 104 to disengage, and the action mechanism 104 drives the contact unit 101 to open; after the power is cut off, the first driving member 107 moves in the opposite direction to achieve automatic reset.

[0043] Alternatively, the second drive device 106 is energized to cause the second drive member 108 to move linearly and trip, and the contact unit 101 is opened through the action mechanism 104; a manual reset part 109 is provided on the second drive member 108; after power is cut off, the manual reset part 109 is subjected to force to make the second drive member 108 move in the opposite direction to achieve reset.

[0044] It should be noted that in the embodiment of this application, when a simple fault occurs, such as an overload, the first drive device 105 is energized, causing the actuating mechanism 104 to drive the contact unit 101 to open. When the power is cut off or the overload fault is cleared, the first drive device 105 will automatically reset to its initial state.

[0045] It should be noted that a reset spring is provided inside the first driving device 105. After power is cut off, the reset spring releases its elastic force, causing the first driving member 107 to move in the opposite direction to achieve automatic reset. When power is applied, the first driving device 105 is energized, causing the first driving member 107 to move in a straight line, and the reset spring stores elastic potential energy.

[0046] In the event of a complex fault, the second drive unit 106 is energized, causing the actuating mechanism 104 to trip the contact unit 101. Since the second drive unit 108 requires manual pressing of the manual reset part 109, the risk of misoperation is reduced. Both the first drive unit 105 and the second drive unit 106 can utilize existing flux trip devices.

[0047] It should be noted that, by introducing a first driving device 105 and a second driving device 106, different tripping mechanisms can be selected according to the type of fault, thereby achieving a more precise fault response. For simple overload situations, the first driving device 105 is used to quickly cut off the current; while for more complex faults, the second driving device 106 is activated to ensure that a reset operation is only performed after it is confirmed that the fault has been resolved.

[0048] Since complex faults require manual pressing of the manual reset unit 109 to reset the second drive unit 108, this method effectively reduces the risk of misoperation caused by automatic reset and ensures that the circuit will only be reconnected after the fault has been truly eliminated, thereby improving the safety and reliability of the system.

[0049] By addressing different types of faults in a targeted manner, unnecessary system downtime is reduced, while equipment damage caused by frequent false triggers or failure to cut off power in a timely manner is avoided. This not only extends the service life of the equipment but also reduces overall operating costs.

[0050] For simple faults, the first drive unit 105 can be automatically reset, simplifying the process of restoring power supply; while when dealing with complex faults, the design of the manual reset unit 109 adds an extra layer of safety, ensuring that the circuit can only be reset and closed when the safety is confirmed by a human, further protecting the safety of the operator.

[0051] Reference Figure 2 , Figure 3 As shown, as an optional implementation, it also includes a locking component 110 connected to the handle assembly 103; when the second drive member 108 disengages along a linear movement, the second drive member 108 drives the locking component 110 to lock the handle assembly 103, generating a force that prevents the handle assembly 103 from rotating; when the manual reset part 109 is forced to move the second drive member 108 in the opposite direction to achieve reset, the second drive member 108 drives the locking component 110 to release the lock on the handle assembly 103, so that the handle assembly 103 can be driven to rotate to achieve the re-locking of the action mechanism.

[0052] It should be noted that when the system detects a fault (such as a short circuit), the second drive device 106 is activated, causing the second drive component 108 to move linearly to complete the tripping action, thereby triggering the contact unit 101 to enter the open state. At the same time, the second drive component 108 will work in conjunction with the locking component 110 to apply a blocking force to the connected handle component 103, preventing the handle component 103 from being rotated, thus avoiding safety hazards caused by misoperation when the fault has not been eliminated.

[0053] Once the fault is confirmed to be resolved, the operator can press the manual reset part 109 to reverse the movement of the second drive member 108. During this process, the second drive member 108 will also actuate the locking component 110, releasing the lock on the handle assembly 103. This step allows the handle assembly 103 to rotate freely again, facilitating manual operation to re-lock the actuating mechanism and close the disconnect switch.

[0054] After the contact unit 101 enters the open state due to the action of the second drive device 106, this application physically locks the handle assembly 103 by locking component 110 to ensure that even in complex fault conditions, there will be no unnecessary risks due to human error.

[0055] This application embodiment introduces a locking component 110 to ensure that, after a complex fault occurs, the system cannot be reset unless properly inspected and confirmed to have been repaired. This design significantly reduces the risk of premature reset and enhances system security.

[0056] For example, refer to Figure 2 , Figure 3As shown, in one optional implementation, the handle assembly 103 includes a handle shaft 112 and a slide plate 114; when the handle shaft 112 is driven to rotate, it drives the slide plate 114 to slide in a straight line, and the slide plate 114 is provided with a slot 115; the locking assembly 110 includes a locking plate 116, which is inserted into the slot 115 to generate a force that prevents the slide plate 114 from sliding.

[0057] The handle assembly 103 locking assembly 110 also includes a locking spring 117; the locking spring 117 and the slide plate 114 are respectively disposed on opposite sides of the locking plate 116; the second drive member 108 is provided with a first guide portion 118 that abuts against the locking plate 116; when the second drive member 108 moves in the reverse direction, the first guide portion 118 pushes the locking plate 116 away from the slide plate 114, causing the locking plate 116 to separate from the slot 115, and compresses the locking spring 117; when the second drive member 108 moves in the forward direction to disengage, the locking spring 117 pushes the locking plate 116 to insert into the slot 115.

[0058] It should be noted that, by introducing a locking plate 116 and a locking spring 117, this embodiment of the application ensures that, in the event of a malfunction, the locking plate 116 automatically inserts into the slot 115 of the slide plate 114, preventing any movement of the handle assembly 103 and thus preventing safety hazards caused by misoperation. This mechanical locking mechanism of this embodiment significantly improves the safety of the system.

[0059] The locking plate 116 and the slot 115 in this embodiment provide a very clear physical locking point, ensuring the stability of the locked state. Meanwhile, the presence of the locking spring 117 ensures that the locking plate 116 can reliably maintain the locked state even without power supply, further enhancing the system's reliability.

[0060] Furthermore, once the fault is resolved, manually pressing the manual reset unit 109 causes the second drive member 108 to move in the reverse direction, allowing the first guide unit 118 to accurately push the locking plate 116 out of the slot 115, thus releasing the lock on the handle assembly 103. This makes the reset process both safe and simple, requiring no additional tools or complicated steps.

[0061] Reference Figure 4 , Figure 5 as well as Figure 6As shown, as an optional implementation, it also includes a linkage component 111 for linking the first drive device 105 and the handle assembly 103; when the second drive member 108 disengages along a linear movement, the second drive member 108 drives the linkage component 111 to move, releasing the linkage between the first drive device 105 and the handle assembly 103; when the manual reset part 109 is forced to move the second drive member 108 in the opposite direction to achieve reset, the second drive member 108 drives the linkage component 111 to move, the first drive device 105 and the handle assembly 103 resume linkage, so that the handle assembly 103 can be driven to rotate to achieve the re-engagement of the action mechanism 104.

[0062] When the second drive member 108 performs a release operation along a linear motion, it drives the linkage component 111 to move, thereby disengaging the linkage between the first drive device 105 and the handle assembly 103. This means that even if the handle assembly 103 is rotated, the first drive device 105 cannot be reset, preventing potential risks caused by misoperation.

[0063] Specifically, when the first drive device 105 is in the disengaged state, after the linkage between the first drive device 105 and the handle assembly 103 is released, rotating the handle assembly 103 will not cause the first drive component 107 to reset in the reverse direction.

[0064] Once the fault is confirmed to be resolved and the manual reset unit 109 is manually pressed to reverse the movement of the second drive member 108, the second drive member 108 will again drive the linkage assembly 111 to move, restoring the linkage between the first drive device 105 and the handle assembly 103. In this way, the handle assembly 103 can regain control of the first drive device 105, allowing the first drive device 105 to perform the re-clamping and closing operations of the actuation mechanism 104.

[0065] It should be noted that by automatically disengaging the linkage between the first drive device 105 and the handle assembly 103 in the event of a complex fault, the possibility of the user attempting a forced reset without resolving the problem is effectively avoided, reducing the risk caused by misoperation. The linkage between the two can only be re-established after the fault has been truly resolved and the reset is complete, further enhancing the system's safety.

[0066] This design in the embodiments of this application ensures that the stable state of the system will not be disrupted by human error under any circumstances. For example, during complex fault handling, if the user attempts to directly operate the first drive device 105 via the handle assembly 103, it will have no effect until the fault is completely resolved and the reset is completed through the correct procedure.

[0067] For example, refer to Figure 4 , Figure 5 as well as Figure 6As shown, in one optional embodiment, the handle assembly 103 includes a handle shaft 112 and a slide plate 114; the slide plate 114 is provided with a mounting hole; the linkage assembly 111 includes a sliding shaft 121 that slides through the mounting hole; the first end 122 of the sliding shaft 121 is close to the first driving device 105, and the second end 123 is close to the second driving device 106; the second driving member 108 is provided with a second guide portion 124 that abuts against the second end 123; when the second driving member 108 moves in the opposite direction, the second guide portion 124 pushes the sliding shaft 121 to move axially closer to the first driving device 105; when the handle shaft 112 drives the slide plate 114 to slide, the first end 122 abuts against the first driving member 107 and pushes the first driving member 107 to move in the opposite direction to achieve a reset.

[0068] The second end 123 is provided with a blocking part, and a spring element 125 is provided between the blocking part and the sliding plate 114; when the sliding shaft 121 approaches the first driving device 105 along the axial direction, the blocking part compresses the spring element 125 to store elastic potential energy.

[0069] When the second driving member 108 moves forward and disengages, the spring element 125 releases its elastic potential energy, causing the first end 122 to move away from the first driving device 105.

[0070] Unlike the above embodiments, this application embodiment also includes a locking component 110 that cooperates with the handle assembly 103; when the actuation mechanism 104 is disengaged, the second drive member 108 drives the locking component 110 to lock the handle assembly 103, generating a force that prevents the handle assembly 103 from rotating; after power failure, the second drive member 108 moves in the opposite direction to achieve automatic reset; the locking component 110 maintains the locked state of the handle assembly 103.

[0071] Reference Figure 1 as well as Figure 6 As shown, in an optional implementation, the operation unit 102 further includes a housing 119, and the first drive device 105 and the second drive device 106 are both disposed inside the housing 119; a reset window 120 is provided on the housing 119; and a manual reset part 109 extends through the reset window 120 to the outside of the housing 119.

[0072] It should be noted that the manual reset part 109 extends to the outside through the reset window 120 on the housing 119. This allows the user to perform the necessary reset operation without opening the entire housing 119, while also limiting direct contact with other internal components and reducing the risk of misoperation.

[0073] Users can operate the device directly via the manual reset section 109 outside the housing 119 without disassembling or opening the equipment, simplifying the maintenance process and improving work efficiency. This is especially important in situations requiring rapid response.

[0074] This application embodiment provides a chassis, a control unit, and the aforementioned disconnect switch 100; the handle assembly 103 has a knob exposed outside the chassis, which is connected to the handle shaft 112 for the user to operate and rotate the handle shaft 112; the control unit is electrically connected to the first drive device 105 and the second drive device 106, and is used to send a trip signal to the first drive device 105 and the second drive device 106 when a line fault occurs.

[0075] When an abnormal condition such as overload or short circuit is detected, the disconnect switch 100 can quickly cut off the current, protecting the inverter and other electrical equipment from damage and increasing the reliability of the entire system.

[0076] The locking component 110 and linkage mechanism in the isolating switch 100 of this application embodiment can automatically lock the handle component 103 when a complex fault is detected, preventing attempts to reset without resolving the fault and reducing the risk caused by misoperation. By distinguishing between different handling methods for simple and complex faults, it ensures that a reset operation can only be performed under appropriate conditions, further enhancing the safety of the system.

[0077] This application provides a power supply system, a power conversion device, a control unit, and the aforementioned disconnect switch 100. The disconnect switch 100 is installed in the power conversion device, and the handle assembly 103 has a knob exposed outside the power conversion device. The control unit is electrically connected to the first drive device 105 and the second drive device 106 through the power conversion device. When a line fault occurs, it is used to send a trip signal to the first drive device 105 and the second drive device 106.

[0078] The power supply system provided in this application embodiment, by integrating the aforementioned isolating switch 100, exhibits significant advantages in terms of safety, system reliability, user experience, and overall performance. It not only improves the operating efficiency and lifespan of the inverter but also provides users with a safer, more reliable, and easier-to-maintain technical solution, thus ensuring the safety of the power supply system.

[0079] 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.

Claims

1. A disconnecting switch (100), characterized in that, It includes a contact unit (101) and an operation unit (102); the operation unit (102) includes a handle assembly (103), an actuation mechanism (104), a first drive device (105) and a second drive device (106); a first drive member (107) is provided on the first drive device (105); a second drive member (108) is provided on the second drive device (106); When the first driving device (105) is powered on, the first driving member (107) moves close to the action mechanism (104), driving the action mechanism (104) to disengage, and through the action mechanism (104) driving the contact unit (101) to open; after power is cut off, the first driving member (107) moves in the opposite direction to achieve automatic reset. Alternatively, the second drive device (106) is energized to move the second drive member (108) close to the action mechanism (104), driving the action mechanism (104) to trip, and through the action mechanism (104) to open the contact unit (101).

2. The disconnector (100) according to claim 1, characterized in that, The second driving member (108) is provided with a manual reset part (109); after power is cut off, the manual reset part (109) is subjected to force to make the second driving member (108) move in the opposite direction to achieve reset.

3. The disconnector (100) according to claim 1, characterized in that, It also includes a locking assembly (110) that cooperates with the handle assembly (103); the second drive member (108) is provided with a manual reset part (109). When the action mechanism (104) is disengaged, the second drive member (108) drives the locking assembly (110) to lock the handle assembly (103), generating a force that prevents the handle assembly (103) from rotating; the manual reset part (109) is subjected to force to make the second drive member (108) move in the opposite direction to achieve reset. At the same time, the second drive member (108) drives the locking assembly (110) to release the lock on the handle assembly (103), so that the handle assembly (103) can be driven to rotate to achieve the action mechanism (104) to re-lock.

4. The disconnector (100) according to claim 1, characterized in that, It also includes a locking component (110) that cooperates with the handle assembly (103); when the actuating mechanism (104) is disengaged, the second driving member (108) drives the locking component (110) to lock the handle assembly (103), generating a force that prevents the handle assembly (103) from rotating; after power failure, the second driving member (108) moves in the opposite direction to achieve automatic reset; the locking component (110) maintains the locked state of the handle assembly (103).

5. The disconnector (100) according to claim 3, characterized in that, The operating unit further includes a linkage component (111) for linking the first drive device (105) and the handle assembly (103); when the action mechanism (104) is disengaged, the second drive member (108) drives the linkage component (111) to move, thereby releasing the linkage between the first drive device (105) and the handle assembly (103); when the manual reset part (109) is subjected to force to cause the second drive member (108) to move in the opposite direction to achieve reset, the second drive member (108) drives the linkage component (111) to move, and the first drive device (105) and the handle assembly (103) resume linkage, so that the handle assembly (103) can be driven to rotate to re-engage the action mechanism (104).

6. The disconnector (100) according to claim 5, characterized in that, The handle assembly (103) includes a handle shaft (112) and a slide plate (114); the slide plate (114) is provided with a mounting hole; the linkage assembly (111) includes a sliding shaft (121) that slides through the mounting hole; the first end (122) of the sliding shaft (121) is close to the first driving device (105), and the second end (123) is close to the second driving device (106); the second driving member (108) is provided with a second guide portion (124) that abuts against the second end (123); when the second driving member (108) moves in the opposite direction, the second guide portion (124) pushes the sliding shaft (121) to move axially closer to the first driving device (105); when the handle shaft (112) drives the slide plate (114) to slide, the first end (122) abuts against the first driving member (107) and pushes the first driving member (107) to move in the opposite direction to achieve a reset.

7. The disconnector (100) according to claim 6, characterized in that, The second end (123) is provided with a blocking part, and a spring element (125) is provided between the blocking part and the sliding plate (114); when the sliding shaft (121) approaches the first driving device (105) along the axial direction, the blocking part compresses the spring element (125) to store elastic potential energy. When the second driving member (108) moves forward and disengages, the spring element (125) releases its elastic potential energy, causing the first end (122) to move away from the first driving device (105).

8. The disconnector (100) according to claim 3, characterized in that, The handle assembly (103) includes a handle shaft (112) and a slide plate (114); when the handle shaft (112) is driven to rotate, it drives the slide plate (114) to slide in a straight line, and the slide plate (114) is provided with a slot (115); the locking assembly (110) includes a locking plate (116), which is inserted into the slot (115) to generate a force that prevents the slide plate (114) from sliding.

9. The disconnector (100) according to claim 8, characterized in that, The locking assembly (110) further includes a locking spring (117); the locking spring (117) and the sliding plate (114) are respectively disposed on opposite sides of the locking plate (116); the second driving member (108) is provided with a first guide portion (118) that abuts against the locking plate (116); when the second driving member (108) moves in the reverse direction, the first guide portion (118) pushes the locking plate (116) away from the sliding plate (114) so ​​that the locking plate (116) separates from the slot (115) and compresses the locking spring (117); when the second driving member (108) moves forward to disengage, the locking spring (117) pushes the locking plate (116) to insert into the slot (115).

10. The disconnector (100) according to any one of claims 2-3 and 5-9, characterized in that, The operating unit (102) also includes a housing (119), and the first driving device (105) and the second driving device (106) are both located inside the housing (119); a reset window (120) is provided on the housing (119); the manual reset part (109) extends through the reset window (120) to the outside of the housing (119).

11. A power conversion device, characterized in that, The enclosure, the control unit, and the disconnect switch (100) according to any one of claims 1-10; the handle assembly (103) is provided with a knob exposed outside the enclosure 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 trip signal to the first drive device (105) and the second drive device (106) when a line fault occurs.

12. A power supply system, characterized in that, The power conversion device, the control unit, and the disconnecting switch (100) according to any one of claims 1-10; the disconnecting switch (100) is installed in the power conversion device, the handle assembly (103) is provided with a knob exposed outside the power conversion device, and the control unit is electrically connected to the first drive device (105) and the second drive device (106) through the power conversion device to send a trip signal to the first drive device (105) and the second drive device (106) when a line fault occurs.

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