Hybrid solid state circuit breaker

Abstract

The application relates to the technical field of low-voltage electrical apparatus, in particular to a hybrid solid-state circuit breaker which comprises a high-speed switch, a position detection device and a state display screen, the position detection device is electrically connected with the state display screen, and the position detection device is used for detecting the position of a main shaft of the high-speed switch; when the main shaft moves to a closing position, the position detection device sends a closing signal to the state display screen; when the main shaft moves to an opening position, the position detection device sends an opening signal to the state display screen; and the state display screen displays that a moving contact of the high-speed switch is in an opening state or a closing state according to the received signal. The application can directly detect the physical position of the main shaft of the high-speed switch and display the opening and closing states in real time, and can effectively improve the safety of the equipment.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a hybrid solid-state circuit breaker. Background Technology

[0002] Existing hybrid solid-state circuit breakers have deficiencies in operational status visualization and safety assurance. Currently, the status display of most solid-state or hybrid switches only reflects the control system's command signals, such as "opening command sent," rather than the actual physical position of the high-speed switch's mechanical contacts. When the drive mechanism jams, the transmission fails, or the spindle is not fully in position, the control system may misjudge the switch status, leading maintenance personnel to mistakenly believe that the equipment has reliably isolated, thus posing a risk of electric shock or short circuit. Furthermore, current technology lacks direct detection and feedback of the mechanical isolation status. Although power semiconductors can quickly interrupt current, parasitic capacitive coupling and microampere-level leakage current still exist after interruption, failing to provide a truly meaningful physical break. Therefore, the system's safety isolation function highly depends on whether the high-speed mechanical switch has reliably opened. However, existing products generally lack a real-time detection mechanism for the actual position of the high-speed switch spindle, making it difficult to confirm whether the contacts have truly separated. Summary of the Invention

[0003] The purpose of this application is to provide a hybrid solid-state circuit breaker that can directly detect the physical position of the high-speed switch spindle and display the opening and closing status in real time, thereby effectively improving the safety of the equipment.

[0004] This application is implemented as follows: This application provides a hybrid solid-state circuit breaker, including a high-speed switch, a position detection device, and a status display screen. The position detection device is electrically connected to the status display screen and is used to detect the position of the main shaft of the high-speed switch. When the main shaft moves to the closed position, the position detection device sends a closed signal to the status display screen. When the main shaft moves to the open position, the position detection device sends an open signal to the status display screen. The status display screen displays whether the moving contact of the high-speed switch is in an open or closed state based on the received signals.

[0005] As an optional implementation, it also includes a trigger linkage; one end of the trigger linkage is fixedly connected to the main shaft, and the other end extends to the trigger area of ​​the position detection device; when the trigger linkage moves with the main shaft to the closed position or the open position, it triggers the position detection device to output the corresponding closed signal or open signal.

[0006] As an optional implementation, the high-speed switch includes a protective housing; the main shaft passes through a through hole in the side wall of the protective housing and extends to the outside of the protective housing; the trigger linkage is connected to the portion of the main shaft located outside the protective housing; the position detection device is fixed on the outer side wall of the protective housing and is located on the movement path of the trigger linkage.

[0007] As an optional implementation, the high-speed switch includes a protective housing; the trigger linkage and the position detection device are both disposed within the protective housing; the position detection device is located on the movement path of the trigger linkage.

[0008] As an optional implementation, the trigger linkage includes a V-shaped structural component; one end of the V-shaped structural component is connected to the main shaft, and the other end is close to the trigger area extending to the position detection device.

[0009] As an optional implementation, the high-speed switch further includes a linkage mechanism and a linear drive mechanism; the linear drive mechanism is used to drive the moving contact of the high-speed switch to move in a first direction to open or close; the main shaft is connected to the linear drive mechanism through the linkage mechanism so that when the linear drive mechanism is activated, it drives the main shaft to move linearly in a second direction perpendicular to the first direction.

[0010] As an optional implementation, the linear drive mechanism includes a movable plate for carrying a moving contact; the linkage mechanism includes a rhombic four-bar linkage, a guide member, and two linkage members; the two ends of the movable plate along its length are respectively hinged to the two linkage members via connecting shafts; each linkage member is connected to a main shaft, and the two main shafts are arranged parallel to each other; the two diagonal hinge points of the rhombic four-bar linkage are respectively connected to the two main shafts; the guide member extends along a second direction and slides with the main shaft to guide the main shaft; when the movable plate moves along a first direction, the two main shafts are driven to move synchronously along the second direction through the transmission action of the linkage members and the rhombic four-bar linkage.

[0011] As an optional implementation, the protective housing is provided with a displacement sensor for detecting the real-time displacement or motion state of the spindle; and / or, the protective housing is provided with an angle sensor for detecting the real-time rotation angle of the spindle.

[0012] As an optional implementation, the hybrid solid-state circuit breaker includes at least two high-speed switches; wherein, at least one linkage mechanism and at least one linear drive mechanism are present in the at least two high-speed switches, and the linkage mechanism and the linear drive mechanism drive the moving contacts of the at least two high-speed switches to operate synchronously.

[0013] As an optional implementation, an insulating hinged bushing is provided between adjacent high-speed switches, and the insulating hinged bushing is coaxially sleeved on two adjacent main shafts.

[0014] The beneficial effects of this application include: The hybrid solid-state circuit breaker provided in this application, by introducing a position detection device and a status display screen linked to the high-speed switch spindle, achieves direct sensing and real-time visualization of the actual physical position of the mechanical contacts, effectively solving the problem of status indication distortion caused by relying solely on control commands in the prior art. When the spindle moves to the closed position, the position detection device can send a closed signal to the status display screen; when the spindle moves to the open position, the position detection device can send an open signal to the status display screen. The status display screen shows whether the moving contact of the high-speed switch is in the open or closed state based on the received signals. In this application, even in the case of drive mechanism jamming, transmission failure, or leakage current in semiconductor devices, it can still accurately reflect whether the high-speed switch has reliably opened or closed, thereby providing reliable "physical isolation" status confirmation, significantly improving the safety, reliability, and human-machine interaction transparency of the equipment during operation, maintenance, and fault isolation. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is one of the structural schematic diagrams of the hybrid solid-state circuit breaker according to an embodiment of this application; Figure 2 This is a second schematic diagram of the structure of the hybrid solid-state circuit breaker according to an embodiment of this application; Figure 3 This is the third schematic diagram of the hybrid solid-state circuit breaker according to an embodiment of this application; Figure 4 This is the fourth schematic diagram of the structure of the hybrid solid-state circuit breaker according to an embodiment of this application; Figure 5 This is the fifth schematic diagram of the hybrid solid-state circuit breaker according to an embodiment of this application; Figure 6 This is the sixth schematic diagram of the hybrid solid-state circuit breaker according to an embodiment of this application.

[0017] Icons: 100-High-speed switch; 101-Position detection device; 102-Status display screen; 103-Main spindle; 104-Trigger linkage component; 105-Protective housing; 106-Linkage mechanism; 107-Linear drive mechanism; 108-Moving plate; 109-Insulated hinge bushing; 110-Rhomboid four-bar linkage; 111-Guide component; 112-Linkage component; 113-Connecting shaft; 114-Tension spring; Z-First direction; X-Second direction. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Existing hybrid solid-state circuit breakers have deficiencies in terms of operational status visualization and safety assurance. Currently, the status display of most solid-state or hybrid switches only reflects the command signals of the control system, such as "opening command sent," rather than the actual physical position of the mechanical contacts of the high-speed switch 100. When the drive mechanism jams, the transmission fails, or the spindle 103 is not fully in position, the control system may misjudge the switch status, leading maintenance personnel to mistakenly believe that the equipment has been reliably isolated, thus causing the risk of electric shock or short circuit. In addition, existing technology lacks direct detection and feedback of the mechanical isolation status. Although power semiconductors can quickly interrupt current, parasitic capacitive coupling and microampere-level leakage current still exist after they are turned off, making it impossible to provide a true physical break. Therefore, the system's safety isolation function is highly dependent on whether the high-speed mechanical switch has reliably opened. However, existing products generally do not have a real-time detection mechanism for the actual position of the spindle 103 of the high-speed switch 100, making it difficult to confirm whether the contacts have truly separated.

[0023] To address the aforementioned technical problems, this application provides a hybrid solid-state circuit breaker.

[0024] Reference Figure 1 , Figure 2 As shown in the embodiment of this application, the hybrid solid-state circuit breaker includes a high-speed switch 100, a position detection device 101, and a status display screen 102. The position detection device 101 is electrically connected to the status display screen 102. The position detection device 101 is used to detect the position of the spindle 103 of the high-speed switch 100. When the spindle 103 moves to the closed position, the position detection device 101 sends a closed signal to the status display screen 102. When the spindle 103 moves to the open position, the position detection device 101 sends an open signal to the status display screen 102. The status display screen 102 displays whether the moving contact of the high-speed switch 100 is in the open or closed state according to the received signal.

[0025] It should be noted that the working principle of this embodiment is as follows: by setting a position detection device 101 directly associated with the main shaft 103 of the high-speed switch 100 in the hybrid solid-state circuit breaker, the physical position of the main shaft 103 is sensed in real time. When the main shaft 103 moves to the limit position of closing or opening with the drive mechanism, the position detection device 101 is triggered and outputs the corresponding closing signal or opening signal. This signal is transmitted to the status display screen 102 via electrical connection, and the status display screen 102 intuitively presents the current real mechanical state of the moving contact of the high-speed switch 100, specifically whether it is closed or open. Therefore, the hybrid solid-state circuit breaker system provided by this embodiment no longer relies on the logical feedback of control commands, but provides a real, reliable, and visualized isolation status indication based on the actual displacement of the main shaft 103, effectively avoiding the risk of misjudgment caused by mechanism jamming, transmission failure, or semiconductor leakage current, and significantly improving the safety and reliability of equipment operation and maintenance.

[0026] The hybrid solid-state circuit breaker provided in this application embodiment, by introducing a position detection device 101 and a status display screen 102 linked to the main shaft 103 of the high-speed switch 100, achieves direct perception and real-time visualization of the actual physical position of the mechanical contacts, effectively solving the problem of status indication distortion caused by relying solely on control commands in the prior art. When the main shaft 103 moves to the closed position, the position detection device 101 can send a closing signal to the status display screen 102; when the main shaft 103 moves to the open position, the position detection device 101 can send an open signal to the status display screen 102. The status display screen 102 displays whether the moving contact of the high-speed switch 100 is in an open or closed state based on the received signal. In this application, even in the case of drive mechanism jamming, transmission failure, or leakage current in semiconductor devices, it can still accurately reflect whether the high-speed switch 100 has reliably opened or closed, thereby providing reliable physical isolation status confirmation and significantly improving the safety, reliability, and human-machine interaction transparency of the equipment during operation, maintenance, and fault isolation.

[0027] Reference Figure 1 , Figure 2 As shown, as an optional implementation, it also includes a trigger linkage 104; one end of the trigger linkage 104 is fixedly connected to the main shaft 103, and the other end extends to the trigger area of ​​the position detection device 101; when the trigger linkage 104 moves with the main shaft 103 to the closed position or the open position, the trigger position detection device 101 outputs the corresponding closed signal or open signal.

[0028] It should be noted that this application sets up a trigger linkage 104, with one end fixedly connected to the main shaft 103 of the high-speed switch 100 and the other end extending to the trigger area of ​​the position detection device 101. This allows the main shaft 103 to directly and reliably act on the position detection device 101 through the trigger linkage 104 when performing the opening or closing action. When the main shaft 103 moves to the limit position of closing or opening, the trigger linkage 104 is in place and mechanically triggers the position detection device 101, causing it to output the corresponding closing or opening signal, thereby driving the status display screen 102 to update the display.

[0029] The structure provided in this application embodiment accurately converts the physical displacement of the spindle 103 into electrical signal feedback, which not only enhances the stability and anti-interference capability of position detection, but also avoids the space limitations or wear problems caused by the sensor being directly mounted on the spindle 103, further improving the accuracy of status indication and the reliability of long-term system operation.

[0030] As an optional implementation, the position detection device 101 adopts a micro switch or a Hall sensor, which can flexibly balance structural simplicity and detection reliability according to the actual application environment: when a micro switch is used, the on / off signal is output by mechanically pressing the trigger linkage 104, which is compact, low in cost and clear in response; when a Hall sensor is used, the position change is sensed in a non-contact state by using the magnet set on the main shaft 103 or the trigger linkage 104, which has the advantages of no wear, long life, vibration resistance and good sealing.

[0031] Depending on the specific application requirements, the position detection device 101 can also employ a photoelectric position sensor. The photoelectric position sensor transmits and receives light beams. A light-shielding plate or reflective mark is placed on the trigger linkage 104 or the main shaft 103. When the main shaft 103 moves to the closed or open position, the light-shielding plate enters or leaves the light path, thereby changing the output state of the photoelectric sensor and achieving non-contact position detection. Photoelectric sensors have advantages such as fast response speed, high accuracy, and good electrical isolation, making them particularly suitable for applications with high electromagnetic compatibility requirements or where mechanical contact and wear must be avoided.

[0032] The embodiments of this application, by flexibly selecting microswitches, Hall sensors, or photoelectric position detection sensors, can adapt to the reliability, lifespan, and environmental adaptability requirements under different operating conditions, further enhancing the accuracy of the status indication and the system reliability of the hybrid solid-state circuit breaker.

[0033] Reference Figure 1 , Figure 2 As shown, in one optional implementation, the high-speed switch 100 includes a protective housing 105; a main shaft 103 passes through a through hole in the side wall of the protective housing 105 and extends to the outside of the protective housing 105; a trigger linkage 104 is connected to the part of the main shaft 103 located outside the protective housing 105; and a position detection device 101 is fixed on the outer side wall of the protective housing 105 and is located on the movement path of the trigger linkage 104.

[0034] In this embodiment, the main shaft 103 of the high-speed switch 100 is designed to penetrate the side wall of the protective housing 105 and extend to the outside. A trigger linkage 104 is connected to the portion of the main shaft 103 located outside the protective housing 105. Simultaneously, a position detection device 101 (such as a microswitch, Hall effect sensor, or photoelectric sensor) is fixed to the outer side wall of the protective housing 105 and arranged along the movement path of the trigger linkage 104. When the main shaft 103 moves linearly or rotates during the opening and closing operation, it drives the external trigger linkage 104 to move synchronously, thereby touching or sensing the position detection device 101 at the closed or open position, causing it to output a corresponding status signal. This structure places the key position detection components outside the housing, facilitating installation, debugging, and maintenance, while avoiding the complexity of wiring or integrating sensors within the sealed housing. Although the position detection device 101 is located externally, its detection object is still the actual physical displacement of the main shaft 103, thus accurately reflecting the mechanical isolation state of the high-speed switch 100. While considering engineering practicality, it effectively ensures the reliability and safety of the status indication.

[0035] Unlike the above-described embodiment in which the position detection device 101 is arranged outside the housing, this application also provides an internally integrated structure: the high-speed switch 100 includes a protective housing 105, and both the trigger linkage 104 and the position detection device 101 are disposed inside the protective housing 105, wherein the position detection device 101 is fixed on the inner side wall of the housing and is precisely arranged on the movement path of the trigger linkage 104.

[0036] When the spindle 103 drives the trigger linkage 104 to move during the opening or closing process, the linkage 112 directly triggers the position detection device 101 within the housing, thereby outputting the corresponding closing or opening signal. This solution completely seals the key sensing components within the protective housing 105, effectively isolating them from external dust, moisture, electromagnetic interference, and mechanical impacts, significantly improving the environmental adaptability and long-term operational reliability of the detection system. Simultaneously, it avoids the sealing difficulties and potential leakage risks caused by the spindle 103 protruding from the housing, resulting in a more compact structure and higher safety, suitable for industrial or power applications with stringent requirements for protection levels and operational stability.

[0037] It should be noted that when the position detection device 101 is arranged outside the housing, a protective cover can also be configured outside the housing. This is also applicable to industrial or power application scenarios with stringent requirements for protection level and operational stability. This is equivalent to both the trigger linkage 104 and the position detection device 101 being located inside the protective housing 105.

[0038] Optionally, refer to Figure 2As shown, the trigger linkage 104 includes a V-shaped structural component; one end of the V-shaped structural component is connected to the main shaft 103, and the other end is close to the trigger area extending to the position detection device 101. In this embodiment, the V-shaped structural component consists of two rods riveted together as a whole.

[0039] Reference Figure 3 As shown, as an optional implementation, the high-speed switch 100 further includes a linkage mechanism 106 and a linear drive mechanism 107; the linear drive mechanism 107 is used to drive the moving contact of the high-speed switch 100 to perform opening or closing movements along the first direction Z; the main shaft 103 is connected to the linear drive mechanism 107 through the linkage mechanism 106 so that when the linear drive mechanism 107 is activated, it drives the main shaft 103 to move linearly along the second direction X, which is perpendicular to the first direction Z.

[0040] Wherein, the first direction Z is Figure 4 The vertical direction; the second direction X is Figure 4 The left and right directions in the middle.

[0041] For example, refer to Figure 4 , Figure 5 as well as Figure 6 As shown, the linear drive mechanism 107 includes a movable plate 108 for carrying a moving contact; the linkage mechanism 106 includes a rhomboid four-bar linkage 110, a guide member 111, and two linkage members 112; the two ends of the movable plate 108 along its length direction are respectively hinged to the two linkage members 112 via connecting shafts 113; each linkage member 112 is connected to a main shaft 103, and the two main shafts 103 are arranged parallel to each other; the two diagonal hinge points of the rhomboid four-bar linkage 110 are respectively connected to the two main shafts 103; the guide member 111 extends along the second direction X and slides with the main shaft 103 to guide the movement of the main shaft 103; when the movable plate 108 moves along the first direction Z, the two main shafts 103 are driven to move synchronously along the second direction X through the transmission action of the linkage members 112 and the rhomboid four-bar linkage 110.

[0042] It should be noted that the linear drive mechanism 107 can be an electromagnetic drive module; that is, the moving plate 108 is driven by an electromagnetic drive module.

[0043] The two hinge points connecting the rhomboid four-bar linkage 110 and the main shaft 103 are also connected by a tension spring 114. Through the elastic force, the two main shafts 103 always tend to move closer to each other. Therefore, when the force provided by the electromagnetic drive module is less than the elastic force of the tension spring 114, the linkage mechanism 106 will also drive the moving plate 108 to move.

[0044] As an optional implementation, the protective housing 105 is provided with a displacement sensor for detecting the real-time displacement or motion state of the spindle 103.

[0045] It should be noted that the displacement sensor is configured to monitor the linear displacement, speed, or positional changes of the main shaft 103 in real time. By continuously acquiring the dynamic parameters of the main shaft 103 during the opening or closing process, the displacement sensor can not only determine whether the main shaft 103 has accurately reached the closing or opening endpoint, but also identify abnormal operating conditions such as mechanism jamming, slow movement, and insufficient driving force, thereby achieving online diagnosis and predictive maintenance of the operational reliability of the high-speed switch 100. Compared to position detection devices 101 that only provide switching signals, such as microswitches, the displacement sensor provides richer process information, enhancing the system's intelligence level and fault early warning capability. Furthermore, its installation inside the protective housing 105 or integration into the housing structure ensures detection accuracy while maintaining the overall sealing and electromagnetic compatibility of the equipment, further improving the safety and reliability of the hybrid solid-state circuit breaker in complex industrial environments.

[0046] Angle sensors can also be installed on one or more of the links of the rhomboid four-bar linkage 110 as needed. The angle sensors can monitor the rotation angle changes of the links in real time, thereby determining whether the main shaft 103 has accurately reached the closing or opening end point.

[0047] As an optional implementation, one or more links of the rhombic four-bar linkage 110 are equipped with rotary encoders to detect the change in the included angle of at least one link of the rhombic four-bar linkage 110, thereby determining the closed or open state of the main shaft 103. Because the stroke of the linear drive mechanism 107 differs during the closing and opening processes, the main shaft 103 has different positions in the second direction X, such as... Figure 5 As shown, the main shaft 103 is in the closed position when it is close to the connecting shaft 113, and in the open position when it is far away from the connecting shaft 113. This causes the connecting rod of the diamond four-bar linkage 110 equipped with the rotary encoder to have different angles in the closed and open states, thus detecting the closed and open states of the main shaft 103.

[0048] It should be noted that the rotary encoder is configured to detect the rotation angle, angular velocity, or rotation direction of the linkage mechanism 106 in real time. When the linkage mechanism 106 rotates, driving the main shaft 103 to move linearly to perform opening or closing operations, the rotary encoder synchronously outputs a high-precision angle signal. This not only accurately determines whether the main shaft 103 has reached the preset closing or opening position, but also monitors its motion trajectory throughout the process, identifying abnormal states such as motion jamming, incomplete rebound, or drive failure. Compared to the position detection device 101, which only provides an endpoint switching signal, the rotary encoder provides continuous and dynamic mechanical status feedback, significantly improving the intelligence level and operational reliability of the high-speed switch 100.

[0049] When the circuit is closed, the angle between the link of the rhomboid four-bar linkage 110 and the second direction X is a; when the circuit is open, the angle between the link and the second direction X is b, and a is greater than b.

[0050] During the transition from closing to opening, if an angle 'b' is detected after the movement is complete, the circuit is in the opening state. If the detected angle is greater than or less than 'b', it indicates an abnormal state such as incomplete opening. During the transition from opening to closing, if an angle less than 'a' is detected after the movement is complete, it indicates an abnormal state such as incomplete closing. It should be noted that after closing, the moving contact and the stationary contact abut, and the main shaft 103 is located at the right end of the guide member 111. Therefore, the main shaft 103 cannot move further to the right, and angle 'a' is the maximum angle. If the detected angle is less than 'a', it indicates that the main shaft 103 has not closed completely.

[0051] Figure 5 In the open position, the main shaft 103 has not reached the right end of the guide 111. In the open position, the angle between the connecting rod of the rhomboid four-bar linkage 110 and the second direction X is b. During the closing process, the connecting shaft 113 moves upward, and the main shaft 103 moves away from the connecting shaft 113 along the second direction X. The angle between the connecting rod and the second direction X gradually decreases. When the line connecting the connecting shaft 113 and the main shaft 103 is parallel to the second direction X, the tension spring 114 reaches its maximum tension. As the connecting shaft 113 continues to move upward, the tension spring 114 contracts, quickly releasing the tension, causing the connecting shaft 113 to quickly move upward to the closed position. The angle between the connecting rod and the second direction gradually increases to angle α.

[0052] In the closed position, the angle between the connecting rod of the rhomboid four-bar linkage 110 and the second direction X is α. During the opening process, the connecting shaft 113 moves downward, and the main shaft 103 moves away from the connecting shaft 113 along the second direction X. The angle between the connecting rod and the second direction X gradually decreases. When the line connecting the connecting shaft 113 and the main shaft 103 is parallel to the second direction X, the tension spring 114 reaches its maximum tension. As the connecting shaft 113 continues to move downward, the tension spring 114 contracts, quickly releasing the tension, causing the connecting shaft 113 to move downward quickly to the opening position. The angle between the connecting rod and the second direction gradually increases to angle b. At this time, the main shaft 103 is located as follows: Figure 5 The location shown.

[0053] Reference Figure 3 as well as Figure 6 As shown, as an optional implementation, an insulating hinged bushing 109 is provided between adjacent high-speed switches 100, and the insulating hinged bushing 109 is coaxially sleeved with two adjacent main shafts 103.

[0054] Through this structure, the main shafts 103 of multiple high-speed switches 100 can maintain synchronized movement during opening or closing, avoiding problems such as uneven current distribution or abnormal arcing caused by asynchronous operation. Since the main shafts 103 are rigidly or semi-rigidly connected via insulated hinged bushings 109, a complete linkage mechanism 106 and linear drive mechanism 107 can be configured on only one high-speed switch 100 as needed to drive the other adjacent switches to operate synchronously, thereby simplifying the overall structure, reducing manufacturing costs, and improving the coordination and reliability of the multi-pole circuit breaker. Simultaneously, the insulated hinged bushings 109 are made of insulating material, effectively isolating the electrical connections between the switch units and ensuring operational safety. The linkage component 112 can have different shapes in different embodiments. Figure 5 and Figure 6 The shape of the linkage 112 is slightly different. Optionally, a rubber sleeve can be installed in the shaft hole of the rigid bushing to achieve a semi-rigid connection between the spindles 103, which can improve the service life of the bushing.

[0055] As an optional implementation, the hybrid solid-state circuit breaker includes at least two high-speed switches 100; wherein, at least one linkage mechanism 106 and at least one linear drive mechanism 107 are present in the at least two high-speed switches 100, and the linkage mechanism 106 and the linear drive mechanism 107 drive the moving contacts of the at least two high-speed switches 100 to operate synchronously.

[0056] The linkage mechanism 106 includes a rhomboid four-bar linkage 110, which enables the main shafts 103 of multiple high-speed switches 100 to maintain synchronous movement during opening or closing, reducing the risk of movement jamming when multiple high-speed switches 100 are linked.

[0057] As an optional implementation, a power semiconductor module (not shown) connected in parallel with the high-speed switch 100 is also included.

[0058] It should be noted that under normal operating conditions, the load current mainly flows through the high-speed switch 100, which is in a closed state. Due to its extremely low on-resistance, the on-state loss is significantly reduced, thereby improving system efficiency. When a short circuit or overcurrent fault occurs, the control system quickly turns on the power semiconductor module and, after the high-speed switch 100 is opened, forces the main circuit current to the power semiconductor module through its rapid turn-off capability (microsecond level) and reduces it to zero, thus achieving arc-free interruption.

[0059] This parallel structure fully leverages the high-speed response advantage of power semiconductor devices and the low-loss and high-voltage withstand characteristics of mechanical switches, achieving the triple goals of efficient operation, rapid protection, and safe isolation. It effectively overcomes the inherent defects of high power consumption of pure solid-state circuit breakers and slow breaking speed of pure mechanical circuit breakers, making it suitable for DC or AC medium and low voltage power distribution systems with stringent requirements for reliability, efficiency, and response speed.

[0060] 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 hybrid solid-state circuit breaker, characterized in that, The device includes a high-speed switch (100), a position detection device (101), and a status display screen (102). The position detection device (101) is electrically connected to the status display screen (102). The position detection device (101) is used to detect the position of the spindle (103) of the high-speed switch (100). When the spindle (103) moves to the closed position, the position detection device (101) sends a closed signal to the status display screen (102). When the spindle (103) moves to the open position, the position detection device (101) sends an open signal to the status display screen (102). The status display screen (102) displays whether the high-speed switch (100) is in the open or closed state according to the received signal.

2. The hybrid solid-state circuit breaker according to claim 1, characterized in that, It also includes a trigger linkage (104); one end of the trigger linkage (104) is fixedly connected to the main shaft (103), and the other end extends to the trigger area of ​​the position detection device (101); when the trigger linkage (104) moves with the main shaft (103) to the closed position or the open position, it triggers the position detection device (101) to output the corresponding closed signal or open signal.

3. The hybrid solid-state circuit breaker according to claim 2, characterized in that, The high-speed switch (100) includes a protective housing (105); the main shaft (103) passes through a through hole on the side wall of the protective housing (105) and extends to the outside of the protective housing (105); the trigger linkage (104) is connected to the part of the main shaft (103) located outside the protective housing (105); the position detection device (101) is fixed on the outer side wall of the protective housing (105) and located on the movement path of the trigger linkage (104).

4. The hybrid solid-state circuit breaker according to claim 2, characterized in that, The high-speed switch (100) includes a protective housing (105); the trigger linkage (104) and the position detection device (101) are both disposed inside the protective housing (105); the position detection device (101) is located on the movement path of the trigger linkage (104).

5. The hybrid solid-state circuit breaker according to claim 2, characterized in that, The trigger linkage (104) includes a V-shaped structure; one end of the V-shaped structure is connected to the main shaft (103), and the other end is close to the trigger area extending to the position detection device (101).

6. The hybrid solid-state circuit breaker according to any one of claims 1-5, characterized in that, The high-speed switch (100) further includes a linkage mechanism (106) and a linear drive mechanism (107); the linear drive mechanism (107) is used to drive the moving contact of the high-speed switch (100) to open or close along a first direction (Z); the main shaft (103) is connected to the linear drive mechanism (107) through the linkage mechanism (106) so that when the linear drive mechanism (107) is activated, it drives the main shaft (103) to move linearly along a second direction (X) perpendicular to the first direction (Z).

7. The hybrid solid-state circuit breaker according to claim 6, characterized in that, The linear drive mechanism (107) includes a movable plate (108) for carrying the moving contact; the linkage mechanism (106) includes a rhomboid four-bar linkage (110), a guide (111), and two linkages (112); the two ends of the movable plate (108) along its length are respectively hinged to the two linkages (112) via connecting shafts (113); each linkage (112) is connected to the main shaft (103), and the two main shafts (103) are arranged parallel to each other; The two diagonal hinge points of the rhomboid four-bar linkage (110) are respectively connected to the two main shafts (103); the guide member (111) extends along the second direction (X) and slides with the main shaft (103) to guide the main shaft (103); when the moving plate (108) moves along the first direction (Z), the two main shafts (103) move synchronously along the second direction (X) through the transmission action of the linkage member (112) and the rhomboid four-bar linkage (110).

8. The hybrid solid-state circuit breaker according to claim 6, characterized in that, It also includes a protective housing (105); the protective housing (105) is provided with a displacement sensor for detecting the real-time displacement or motion state of the spindle (103); and / or, the protective housing (105) is provided with an angle sensor for detecting the real-time rotation angle of the spindle (103).

9. The hybrid solid-state circuit breaker according to any one of claims 1-5, characterized in that, An insulating hinge sleeve (109) is provided between adjacent high-speed switches (100), and the insulating hinge sleeve (109) is coaxially sleeved with two adjacent main shafts (103).

10. The hybrid solid-state circuit breaker according to claim 6, characterized in that, The hybrid solid-state circuit breaker includes at least two high-speed switches (100); wherein at least one linkage mechanism (106) and at least one linear drive mechanism (107) are present in the at least two high-speed switches (100), and the linkage mechanism (106) and the linear drive mechanism (107) drive the moving contacts of the at least two high-speed switches (100) to move synchronously.

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