Switching device and power system

Abstract

The utility model provides a switching device and a power system, and relates to the technical field of electrical equipment. The utility model provides a switching device. The switching device comprises a wire inlet terminal, a wire outlet terminal, at least two moving contacts and at least two first static contacts. The at least two first static contacts are in one-to-one correspondence with the at least two moving contacts, and the at least two first static contacts are respectively used for being contacted with or separated from the at least two moving contacts. The wire inlet terminal is electrically connected with the at least two first static contacts, and the wire outlet terminal is electrically connected with the at least two moving contacts under the condition that the at least two first static contacts are in contact with the at least two moving contacts. Therefore, the switching device provided by the utility model is relatively high in current bearing capacity, the switching device can bear relatively high current, the use reliability of the switching device is improved, and the application range of the switching device is relatively wide.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and more particularly to a switching device and a power system. Background Technology

[0002] Switching devices play a crucial role in power systems, controlling the on / off state of circuits by controlling the contact or separation of moving and stationary contacts.

[0003] When a switching device connects a circuit, a closed circuit is formed, allowing current to flow smoothly through the switching device. In other words, the switching device carries the current in its circuit, and its current-carrying capacity is closely related to its application.

[0004] In related technologies, the low current carrying capacity of switching devices limits their application. Utility Model Content

[0005] This application provides a switching device and a power system that can improve the current carrying capacity of the switching device, thereby expanding its application range.

[0006] In a first aspect, this application provides a switching device, including an input terminal, an output terminal, at least two moving contacts, and at least two first stationary contacts. The at least two first stationary contacts correspond one-to-one with the at least two moving contacts, and each of the at least two first stationary contacts is used to contact or separate from the at least two moving contacts.

[0007] The incoming terminal is electrically connected to at least two first stationary contacts, and the outgoing terminal is electrically connected to at least two moving contacts when at least two first stationary contacts are in contact with at least two moving contacts.

[0008] Thus, the switching device proposed in this application has a high current carrying capacity, which enables the switching device to withstand larger currents, improves the reliability of the switching device, and makes the switching device applicable to a wider range of fields.

[0009] Optionally, the switching device further includes at least two second stationary contacts corresponding one-to-one with at least two moving contacts, and the output terminal is electrically connected to at least two second stationary contacts. At least two first stationary contacts and at least two second stationary contacts are spaced apart, and the moving contacts have opposing first contact ends and second contact ends. The first stationary contacts are used to contact or separate from the first contact ends of the moving contacts, and the second stationary contacts are used to contact or separate from the second contact ends of the moving contacts.

[0010] When at least two first stationary contacts are in contact with at least two moving contacts, at least two second stationary contacts are also in contact with at least two moving contacts.

[0011] Thus, the moving contact can be connected to the first stationary contact through the first contact end, and simultaneously, the moving contact can also be connected to the second stationary contact through the second contact end. When both the first and second stationary contacts are connected to the moving contact, the moving contact can be electrically connected to the incoming terminal through the first stationary contact, and the moving contact can be electrically connected to the outgoing terminal through the second stationary contact, thereby forming a path between the incoming and outgoing terminals, allowing current to flow normally.

[0012] Optionally, the switching device also includes a housing with an internal mounting cavity. At least two moving contacts and at least two first stationary contacts are disposed within the mounting cavity. The moving contacts are movable within the mounting cavity to allow them to contact or separate from the first stationary contacts. The housing is provided with a first wiring hole and a second wiring hole communicating with the mounting cavity. An input terminal extends from the mounting cavity through the first wiring hole, and an output terminal extends from the mounting cavity through the second wiring hole.

[0013] In this way, the housing can provide mounting positions for the moving contact, the first stationary contact, the incoming terminal, and the outgoing terminal, and protect the moving contact and the first stationary contact.

[0014] Optionally, a rotating shaft is rotatably mounted on the wall of the mounting cavity, and at least two moving contacts are spaced apart along the axis of the rotating shaft. At least two first stationary contacts are fixed at intervals along the axis of the rotating shaft to the wall of the mounting cavity, and the rotating shaft can drive the at least two moving contacts to rotate so that the at least two moving contacts can contact or separate from the at least two first stationary contacts.

[0015] Thus, when the shaft rotates, it can drive at least two moving contacts to rotate, thereby changing the relative position between the moving contacts and the first stationary contact, and thus allowing the moving contacts to contact or separate from the first stationary contact.

[0016] Optionally, the moving contact includes a first moving contact plate and a second moving contact plate, both of which are disposed on the rotating shaft, with a gap between them. When the moving contact is connected to the first stationary contact, the first stationary contact is embedded in the gap and abuts against both the first and second moving contact plates.

[0017] Thus, the arrangement of the moving contact and the first stationary contact, as well as the connection method, can better adapt to the rotation of the moving contact, making the connection between the moving contact and the first stationary contact more reliable.

[0018] Optionally, the incoming terminal includes an interconnected terminal block and a fixing plate, with at least a portion of the fixing plate located in the mounting cavity and connected to the cavity wall. The terminal block extends from the mounting cavity through a first wiring hole. At least two first stationary contacts are spaced apart and connected to the side of the fixing plate facing the rotating shaft.

[0019] In this way, the incoming terminals can be fixed to the housing, giving them a defined position. The terminal block extends from the mounting cavity, allowing wiring to be performed outside the housing, improving ease of wiring.

[0020] Optionally, the housing includes a first housing and a second housing, which are fastened together to form a mounting cavity. A first wiring hole is provided in either the first housing or the second housing, and a second wiring hole is provided in either the first housing or the second housing.

[0021] Alternatively, a portion of the first wiring hole may be disposed in the first housing, and the other portion of the first wiring hole may be disposed in the second housing, a portion of the second wiring hole may be disposed in the first housing, and the other portion of the second wiring hole may be disposed in the second housing.

[0022] With the above configuration, the first wiring hole and the second wiring hole can be set on the housing in different ways to install the inlet terminal and the outlet terminal.

[0023] Optionally, the switching device further includes an arc-extinguishing device, which is positioned opposite to at least two first stationary contacts. The arc-extinguishing device is used to cut off the electric arc generated between the moving contact and the first stationary contacts when the moving contact switches from closed to open.

[0024] Thus, when the moving contact and the first stationary contact switch from being connected to being disconnected, the arc extinguishing device can cut the electric arc generated between the moving contact and the first stationary contact so that the electric arc can be extinguished quickly, reducing the damage caused by the electric arc to the switching device.

[0025] Optionally, the arc-extinguishing device includes a mounting component and multiple arc-extinguishing grids. The mounting component has opposing first and second sides, and the multiple arc-extinguishing grids are spaced apart on the first side of the mounting component. The second side of the mounting component is provided with at least two arc-extinguishing grooves, each corresponding to at least two first stationary contacts. The bottom of the arc-extinguishing groove is provided with a through hole. When an arc is generated between the moving contact and the first stationary contact, the arc flows through the through hole and the arc-extinguishing groove to the arc-extinguishing grids, whereby the arc-extinguishing grids can cut the arc.

[0026] Since at least two arc-extinguishing grooves correspond one-to-one with at least two first stationary contacts, the arc-extinguishing grid plate exposed from the second side of the mounting component also corresponds one-to-one with at least two first stationary contacts. Thus, the arc generated when the moving contact separates from different first stationary contacts can enter the arc-extinguishing grid plate through different arc-extinguishing grooves, allowing the arc to quickly reach the arc-extinguishing grid plate and facilitating the extinguishing of multiple arcs.

[0027] Secondly, this application provides a power system including any of the switching devices described in the first aspect above.

[0028] The beneficial effects of the power system provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a switching device according to an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of removing the second housing of a switching device according to an embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the installation of a moving contact and a rotating shaft according to an embodiment of this application.

[0032] Figure 4 This is a third schematic diagram of a casing according to an embodiment of this application.

[0033] Figure 5 This is a schematic diagram of an incoming terminal according to an embodiment of this application.

[0034] Figure 6 This is a schematic diagram of an arc-extinguishing device according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100: Switching device; 10: Moving contact; 11: First contact end; 12: Second contact end; 101: First moving contact plate; 102: Second moving contact plate; 103: Gap; 20: First stationary contact; 30: Incoming terminal; 31: Terminal block; 32: Fixing plate; 40: Outgoing terminal; 50: Second stationary contact; 60: Housing; 601: Mounting cavity; 602: First wiring hole; 603: Second wiring hole; 604: Shaft; 61: First housing; 62: Second housing; 70: Arc extinguishing device; 71: Mounting component; 72: Arc extinguishing grid; 73: Arc extinguishing groove; 74: Through hole. Detailed Implementation

[0037] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0039] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0041] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and 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.

[0042] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0043] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0044] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is connected; it can also refer to the internal connection of two elements. A signal connection can refer not only to a signal connection through a circuit but also to a signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0046] For example, embodiments of this application propose an electric power system, which includes, as follows: Figure 1 The switching device 100 shown.

[0047] Switching device 100 is a device that can connect or disconnect a circuit. When switching device 100 is in the open state, it can connect the circuit, and current flows through it. When switching device 100 is in the closed state, the circuit can be disconnected, preventing charge from flowing in the circuit. At this time, no current flows in the circuit.

[0048] In a power system equipped with the aforementioned switching device 100, the switching device 100 can control the on / off state of the circuit it is in. The switching device 100 proposed in this application has a high current carrying capacity, which can reduce the possibility of damage to the switching device 100 due to large currents in the power system, thus making the power system operation more reliable.

[0049] Furthermore, since the switching device 100 has a high current carrying capacity, the current magnitude at the circuit of the switching device 100 has fewer limitations on its application, thus making the switching device 100 have a wider range of applications.

[0050] In this embodiment of the application, the switching device 100 may be a circuit breaker, a disconnector, or a contactor, etc. The specific type of the switching device 100 is not specifically limited in this embodiment of the application.

[0051] The switching device 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0052] Reference Figure 1 and Figure 2 As shown, this application provides a switching device 100, including an input terminal 30, an output terminal 40, at least two moving contacts 10, and at least two first stationary contacts 20. The at least two first stationary contacts 20 correspond one-to-one with the at least two moving contacts 10, and the at least two first stationary contacts 20 are respectively used to contact or separate from the at least two moving contacts 10.

[0053] The incoming terminal 30 is electrically connected to at least two first stationary contacts 20. When at least two first stationary contacts 20 are in contact with at least two moving contacts 10, the outgoing terminal 40 is electrically connected to at least two moving contacts 10.

[0054] In this application, the switching device 100 includes at least two moving contacts 10 and at least two first stationary contacts 20. Since at least two moving contacts 10 correspond one-to-one with at least two first stationary contacts 20, each moving contact 10 can contact or separate from one of the corresponding first stationary contacts 20 to open or close the switching device 100.

[0055] The switching device 100 also includes an input terminal 30 and an output terminal 40, which can be connected to a circuit. Thus, when the switching device 100 is turned on, a circuit can be formed, and the current in the circuit can enter the switching device 100 through the input terminal 30.

[0056] Since the input terminal 30 is electrically connected to at least two first stationary contacts 20, when the switching device 100 is open, current can flow through the input terminal 30 to the at least two first stationary contacts 20. Then, current can flow through the first stationary contacts 20 to the moving contact 10 that is in contact with the first stationary contacts 20.

[0057] In this embodiment, when at least two first stationary contacts 20 are in contact with at least two moving contacts 10, the outgoing terminal 40 is electrically connected to at least two moving contacts 10. Thus, between the incoming terminal 30 and the outgoing terminal 40, at least two first stationary contacts 20 and at least two moving contacts 10 are connected.

[0058] Based on this, between the input terminal 30 and the output terminal 40, the current can be shunted to at least two first stationary contacts 20, and then flow to at least two moving contacts 10. That is, at the switching device 100, the current in the circuit can be shunted at multiple first stationary contacts 20.

[0059] In this application, the switching device 100 includes at least two moving contacts 10 and at least two first stationary contacts 20. The at least two moving contacts 10 correspond one-to-one with the at least two first stationary contacts 20, so that each moving contact 10 and its corresponding first stationary contact 20 can form a set of contacts.

[0060] With all sets of contacts closed, the incoming terminal 30 and the outgoing terminal 40 can be electrically connected through these multiple sets of contacts. These multiple sets of contacts can shunt the current flowing in the circuit, distributing the current across the various sets of contacts. This is equivalent to multiple sets of contacts being connected in parallel within the switching device 100, meaning the current that the switching device 100 can carry is the sum of the currents that each set of contacts can carry.

[0061] In summary, the switching device 100 proposed in this application has a high current carrying capacity, which enables the switching device 100 to withstand a large current, improves the reliability of the switching device 100, and makes the switching device 100 applicable to a wider range of applications.

[0062] In order to make the purpose and advantages of this application clearer, the solution of this application is described below in conjunction with relevant technologies.

[0063] In related technologies, to improve the current carrying capacity, multiple switching devices are typically connected in parallel, that is, multiple switching devices are combined for use. This configuration results in a larger device size and increased cost.

[0064] In this application, a switching device 100 contains multiple sets of contacts arranged in parallel. When the switching device 100 is connected to a circuit and all sets of contacts are closed, the multiple sets of contacts can shunt the current flowing into the input terminal 30. Thus, the switching device 100 is smaller in size, and since the two sets of contacts share the input terminal 30, output terminal 40, and other components of the switching device 100, the cost of the switching device 100 is also lower.

[0065] In the switching device 100 proposed in this application, the current that the switching device 100 can carry is the sum of the currents that multiple sets of contacts can carry. Thus, compared with a switching device that only has one set of contacts, the switching device 100 in this application can carry a larger current, which is equivalent to a larger rated current of the switching device 100 in this application, thereby reducing the limitation of the current size on the application of the switching device 100.

[0066] In some embodiments, such as Figure 2 and Figure 3 As shown, the switching device 100 may further include at least two second stationary contacts 50 corresponding one-to-one with at least two moving contacts 10, and the output terminal 40 is electrically connected to at least two second stationary contacts 50. At least two first stationary contacts 20 and at least two second stationary contacts 50 are spaced apart. The moving contact 10 has opposing first contact ends 11 and second contact ends 12. The first stationary contacts 20 are used to contact or separate from the first contact ends 11 of the moving contact 10, and the second stationary contacts 50 are used to contact or separate from the second contact ends 12 of the moving contact 10.

[0067] When at least two first stationary contacts 20 are in contact with at least two moving contacts 10, at least two second stationary contacts 50 are also in contact with at least two moving contacts 10.

[0068] The switching device 100 also includes at least two second stationary contacts 50. Since the at least two second stationary contacts 50 also correspond one-to-one with the at least two moving contacts 10, the at least two second stationary contacts 50 can also be in contact with or separated from the at least two moving contacts 10 respectively.

[0069] The first stationary contact 20 and the second stationary contact 50 can contact the moving contact 10 at different positions. Specifically, the moving contact 10 has a first contact end 11 and a second contact end 12. The first stationary contact 20 can contact the first contact end 11, thereby connecting the first stationary contact 20 with the moving contact 10. The second stationary contact 50 can contact the second contact end 12, thereby connecting the second stationary contact 50 with the moving contact 10.

[0070] In this embodiment, at least two first stationary contacts 20 and at least two second stationary contacts 50 are spaced apart. The moving contact 10 can be connected to the first stationary contact 20 through the first contact end 11, and the moving contact 10 can also be connected to the second stationary contact 50 through the second contact end 12.

[0071] Since at least two second stationary contacts 50 are electrically connected to the output terminal 40, when the moving contact 10 is connected to the second stationary contact 50, the moving contact 10 and the output terminal 40 can be electrically connected through the second stationary contact 50 to form a path between the input terminal 30 and the output terminal 40, so that the current can flow normally.

[0072] In this application, a set of contacts includes a moving contact 10, a first stationary contact 20 corresponding to the moving contact 10, and a second stationary contact 50 corresponding to the moving contact 10. When multiple sets of contacts shunt current, the current in the shunt current path can flow through the first stationary contact 20, the moving contact 10, and the second stationary contact 50 respectively, and then flow out from the switching device 100.

[0073] In this embodiment, the input terminal 30 is electrically connected to the first stationary contact 20, and the output terminal 40 is electrically connected to the second stationary contact 50. This ensures a more reliable connection between the input terminal 30 and the output terminal 40 and each set of contacts. Furthermore, it facilitates the connection of the input terminal 30 to multiple sets of contacts, and the connection of the output terminal 40 to multiple sets of contacts, when the switching device 100 is open.

[0074] Compared with the solution of directly connecting the moving contact 10 to the output terminal 40 without providing a second stationary contact 50, the solution of this application can reduce the possibility that the relative position between the moving contact 10 and the output terminal 40 changes when the moving contact 10 is activated, which may lead to an unreliable electrical connection between the moving contact 10 and the output terminal 40.

[0075] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the switching device 100 may further include a housing 60, which has a mounting cavity 601 inside. At least two moving contacts 10 and at least two first stationary contacts 20 are disposed in the mounting cavity 601. The moving contacts 10 can move within the mounting cavity 601 so that the moving contacts 10 can contact or separate from the first stationary contacts 20. The housing 60 is provided with a first wiring hole 602 and a second wiring hole 603 communicating with the mounting cavity 601. The incoming terminal 30 extends out of the mounting cavity 601 through the first wiring hole 602, and the outgoing terminal 40 extends out of the mounting cavity 601 through the second wiring hole 603.

[0076] Thus, the housing 60 can provide mounting positions for the moving contact 10, the first stationary contact 20, the incoming terminal 30, and the outgoing terminal 40, and protect the moving contact 10 and the first stationary contact 20.

[0077] The housing 60 has a mounting cavity 601 inside, and at least two moving contacts 10 and at least two first stationary contacts 20 are disposed in the mounting cavity 601. The moving contacts 10 are movably disposed in the mounting cavity 601, and when the moving contacts 10 are actuated, the moving contacts 10 can move relative to the first stationary contacts 20, so that the moving contacts 10 can contact or separate from the first stationary contacts 20.

[0078] The outer casing 60 is provided with a first wiring hole 602 and a second wiring hole 603. Since both the first wiring hole 602 and the second wiring hole 603 are connected to the mounting cavity 601, the mounting cavity 601 can be connected to the outside of the outer casing 60 through the first wiring hole 602 and the second wiring hole 603.

[0079] Thus, the incoming terminal 30 can be partially disposed in the mounting cavity 601 for electrical connection with the first stationary contact 20, and the incoming terminal 30 can also be partially extended from the mounting cavity 601 through the first wiring hole 602. Similarly, the outgoing terminal 40 can also extend from the mounting cavity 601 through the second wiring hole 603.

[0080] Therefore, when connecting the switching device 100 to the circuit in the power system, the connection can be made through the part of the incoming terminal 30 extending from the mounting cavity 601 and the part of the outgoing terminal 40 extending from the mounting cavity 601, which can improve the convenience of wiring.

[0081] When the switching device 100 includes a second stationary contact 50, at least two second stationary contacts 50 may also be disposed in the mounting cavity 601.

[0082] In this embodiment, at least two moving contacts 10 operate synchronously. This allows at least two moving contacts 10 and at least two first stationary contacts 20 to be simultaneously connected, enabling multiple sets of contacts to shunt the current flowing into the switching device 100 from the input terminal 30, thereby increasing the current carrying capacity of the switching device 100.

[0083] To enable multiple moving contacts 10 to operate synchronously, the following settings can be made: (e.g.) Figure 2 , Figure 3 and Figure 5 As shown, a rotating shaft 604 is rotatably mounted on the wall of the mounting cavity 601, and at least two moving contacts 10 are spaced apart along the axial direction of the rotating shaft 604. At least two first stationary contacts 20 are fixedly spaced apart along the axial direction of the rotating shaft 604 to the wall of the mounting cavity 601. The rotating shaft 604 can drive the at least two moving contacts 10 to rotate, so that the at least two moving contacts 10 can contact or separate from the at least two first stationary contacts 20.

[0084] In this application, the rotating shaft 604 can rotate in the mounting cavity 601. Since at least two moving contacts 10 can be disposed on the rotating shaft 604, when the rotating shaft 604 rotates, the rotating shaft 604 can drive at least two moving contacts 10 to rotate, so that the relative position between the moving contacts 10 and the first stationary contact 20 changes, thereby allowing the moving contacts 10 to contact or separate from the first stationary contact 20.

[0085] At least two moving contacts 10 are spaced apart along the axial direction of the rotating shaft 604, and at least two first stationary contacts 20 are also spaced apart along the axial direction of the rotating shaft 604 in the mounting cavity 601. In this way, the distribution direction of at least two moving contacts 10 and at least two first stationary contacts 20 is aligned, so that at least two moving contacts 10 can be simultaneously connected with at least two first stationary contacts 20.

[0086] In some embodiments, such as Figure 3 and Figure 5 As shown, the moving contact 10 includes a first moving contact plate 101 and a second moving contact plate 102. Both the first moving contact plate 101 and the second moving contact plate 102 are disposed on the rotating shaft 604, and there is a gap 103 between the first moving contact plate 101 and the second moving contact plate 102. When the moving contact 10 is connected to the first stationary contact 20, the first stationary contact 20 is embedded in the gap 103 and abuts against both the first moving contact plate 101 and the second moving contact plate 102.

[0087] The movable contact 10 includes a first movable contact plate 101 and a second movable contact plate 102 spaced apart, both of which are mounted on a rotating shaft 604. When the rotating shaft 604 rotates, both the first movable contact plate 101 and the second movable contact plate 102 can rotate accordingly.

[0088] The gap 103 between the first moving contact plate 101 and the second moving contact plate 102 can be used to accommodate the stationary contact. When the moving contact 10 is connected to the first stationary contact 20, the first stationary contact 20 can be embedded in the gap 103 between the first moving contact 10 and the second moving contact 10, and abut against both the first moving contact plate 101 and the second moving contact plate 102.

[0089] Thus, the arrangement and connection method of the moving contact 10 and the first stationary contact 20 can better adapt to the rotation of the moving contact 10, making the connection between the moving contact 10 and the first stationary contact 20 more reliable.

[0090] When the switching device 100 also includes a second stationary contact 50, the second stationary contact 50 and the moving contact 10 can also be connected in a similar manner as described above. That is, the rotation of the moving contact 10 can cause the second stationary contact 50 to be embedded in the gap 103 between the first moving contact plate 101 and the second moving contact plate 102, and to abut against both the first moving contact plate 101 and the second moving contact plate 102.

[0091] The moving contact 10 has a first contact end 11 and a second contact end 12. The first moving contact plate 101 and the second moving contact plate 102 are used to connect with the first stationary contact 20 on one side of the first contact end 11. The first moving contact plate 101 and the second moving contact plate 102 are used to connect with the second stationary contact 50 on one side of the second contact end 12.

[0092] It should be noted that in order for the first stationary contact 20 and the second stationary contact 50 to be simultaneously connected to the moving contact 10 to form a passage between the incoming terminal 30 and the outgoing terminal 40, the first stationary contact 20 and the second stationary contact 50 can be arranged opposite to each other, so that the first stationary contact 20, the second stationary contact 50 and the rotating shaft 604 can be located on the same straight line.

[0093] Thus, when the first contact terminal 11 is connected to the first stationary contact 20, the second contact terminal 12 can also be connected to the second stationary contact 50, so that the switching device 100 can connect the circuit.

[0094] In some embodiments, such as Figure 2 and Figure 5 As shown, the incoming terminal 30 includes a terminal block 31 and a fixing plate 32 connected to each other. At least part of the fixing plate 32 is located in the mounting cavity 601 and is connected to the cavity wall of the mounting cavity 601. The terminal block 31 extends out of the mounting cavity 601 through the first wiring hole 602. At least two first stationary contacts 20 are spaced apart and connected to the side of the fixing plate 32 facing the rotating shaft 604.

[0095] In this embodiment, the incoming terminal 30 includes a wiring board 31 and a fixing plate 32. The incoming terminal 30 can be installed through the fixing plate 32 and wired through the wiring board 31.

[0096] Specifically, the fixing plate 32 can be located in the mounting cavity 601 and connected to the cavity wall of the mounting cavity 601, so that the input terminal 30 can be fixed on the housing 60, giving the input terminal 30 a defined position on the housing 60. The wiring plate 31 can extend from the mounting cavity 601 through the first wiring hole 602, ready for wiring when connecting the switching device 100 to the circuit. In this way, the wiring of the input terminal 30 can be performed outside the housing 60, improving the convenience of wiring.

[0097] Alternatively, the fixing plate 32 may be partially located in the mounting cavity 601, while the remaining portion may extend out of the mounting cavity 601 through the first wiring hole 602. In this case, the wiring plate 31 may be connected to the portion of the fixing plate 32 located outside the mounting cavity 601, or the wiring plate 31 may be located outside the mounting cavity 601, allowing the wiring of the inlet terminal 30 to be performed outside the housing 60.

[0098] It should be noted that the outgoing terminal 40 may also have a similar configuration as described above, so that the part of the outgoing terminal 40 that is connected is located outside the mounting cavity 601.

[0099] It should also be noted that the terminal block 31 may be provided with wiring holes, through which wiring can be performed. The number of wiring holes can be 1, 2, 3, or 4, etc., and the specific number of wiring holes is not specifically limited in this embodiment.

[0100] In some embodiments, such as Figure 2 and Figure 4 The outer casing 60 includes a first casing 61 and a second casing 62, which are fastened together to form a mounting cavity 601. Thus, the mounting cavity 601 can be formed between the first casing 61 and the second casing 62. Therefore, the outer casing 60, composed of the first casing 61 and the second casing 62, facilitates the installation of the moving contact 10, the first stationary contact 20, the inlet terminal 30, and the outlet terminal 40.

[0101] When the outer casing 60 includes a first casing 61 and a second casing 62, the first wiring hole 602 and the second wiring hole 603 may have different configurations, as detailed in the following description.

[0102] The first wiring hole 602 can be provided in either the first housing 61 or the second housing 62, and the second wiring hole 603 can be provided in either the first housing 61 or the second housing 62.

[0103] Alternatively, a portion of the first wiring hole 602 may be located in the first housing 61, and the remaining portion of the first wiring hole 602 may be located in the second housing 62, such as... Figure 4 As shown. Part of the second wiring hole 603 is disposed in the first housing 61, and the other part of the second wiring hole 603 is disposed in the second housing 62.

[0104] At this time, both the first wiring hole 602 and the second wiring hole 603 can span across the first housing 61 and the second housing 62. Thus, in the direction from the first housing 61 to the second housing 62, the size of the first wiring hole 602 and the second wiring hole 603 can be relatively large, which facilitates the installation of the inlet terminal 30 and the outlet terminal 40, and reduces the possibility that the inlet terminal 30 and the outlet terminal 40 cannot be installed when the size of the first housing 61 and the second housing 62 is relatively small.

[0105] In this embodiment, the first wiring hole 602 may specifically include a first wiring groove and a second wiring groove disposed opposite to each other. The first wiring groove is disposed on the first housing 61, with its opening facing the second housing 62. The second wiring groove is disposed on the second housing 62, with its opening facing the first housing 61. Thus, the first wiring groove and the second wiring groove can form the first wiring hole 602.

[0106] The second wiring hole 603 can also be set on the first housing 61 and the second housing 62 in the same way as the first wiring hole 602. The specific setting of the first wiring hole 602 on the first housing 61 and the second housing 62 will not be described in detail in this embodiment.

[0107] In this embodiment, when the switching device 100 is open, the moving contact 10 is connected to the first stationary contact 20, and the switching device 100 is in the closed state. When the switching device 100 is closed, the moving contact 10 is separated from the first stationary contact 20, and the switching device 100 is in the open state. When the switching device 100 switches from the closed state to the open state, an electric arc is generated between the moving contact 10 and the first stationary contact 20.

[0108] To control the electric arc and reduce damage to the switching device 100, the switching device 100 in this application further includes an arc-extinguishing device 70, which is positioned opposite at least two first stationary contacts 20. Figure 2 As shown. Thus, when the moving contact 10 and the first stationary contact 20 switch from being connected to being disconnected, the arc extinguishing device 70 can cut the electric arc generated between the moving contact 10 and the first stationary contact 20 so that the electric arc can be extinguished quickly.

[0109] Since the arc extinguishing device 70 is opposite to the first stationary contact 20, after the first stationary contact 20 separates from the moving contact 10 and generates an arc, the distance between the arc and the arc extinguishing device 70 is small, which allows the arc to quickly enter the arc extinguishing device 70 so that the arc extinguishing device 70 can extinguish the arc.

[0110] In some embodiments, such as Figure 2 and Figure 6 As shown, the arc-extinguishing device 70 includes a mounting member 71 and a plurality of arc-extinguishing grid plates 72. The mounting member 71 has a first side and a second side facing each other, and the plurality of arc-extinguishing grid plates 72 are spaced apart on the first side of the mounting member 71. The second side of the mounting member 71 is provided with at least two arc-extinguishing grooves 73, and the at least two arc-extinguishing grooves 73 are correspondingly opposite to at least two first stationary contacts 20. The bottom of the arc-extinguishing groove 73 is provided with a through hole 74. When an arc is generated between the moving contact 10 and the first stationary contact 20, the arc can flow through the through hole 74 and the arc-extinguishing groove 73 to the arc-extinguishing grid plate 72, and the arc-extinguishing grid plate 72 can cut the arc.

[0111] In this application, multiple arc-extinguishing grid plates 72 can be installed using mounting brackets 71. The multiple arc-extinguishing grid plates 72 are arranged at intervals. When an electric arc is generated, the arc can be drawn into the arc-extinguishing grid plates 72 and cut into multiple small segments by the multiple arc-extinguishing grid plates 72, causing the voltage of each small segment of the arc to increase. When the voltage of the arc increases to a certain level, the arc can no longer be sustained, ultimately extinguishing the arc.

[0112] Among them, the arc extinguishing grid 72 is arranged on the first side of the mounting member 71. At least two arc extinguishing grooves 73 are arranged on the second side of the arc extinguishing grid 72. A through hole 74 is arranged at the bottom of the arc extinguishing groove 73. Therefore, the arc extinguishing grid 72 on the first side can be exposed from the second side of the mounting member 71 through the through hole 74 and the arc extinguishing groove 73.

[0113] Since at least two arc extinguishing grooves 73 correspond to at least two first static contacts 20 one by one, the arc extinguishing grid 72 exposed from the second side of the mounting member 71 also corresponds to at least two first static contacts 20 one by one. In this way, the arcs generated when different contact groups are separated can enter the arc extinguishing grid 72 through different arc extinguishing grooves 73, so that when each contact group generates an arc, the arc can quickly reach the arc extinguishing grid 72, which is beneficial to extinguishing multiple arcs.

[0114] It should be noted that in the embodiment of the present application, the number of the moving contacts 10 and the first static contacts 20 can be 2. In this way, when the switching device 100 is opened, the current in the circuit can be divided into two paths and flow at the switching device 100.

[0115] At this time, the number of the arc extinguishing grooves 73 is also 2. In this way, the two arc extinguishing grooves 73 are arranged at intervals, and the arc extinguishing device 70 can be in a structure similar to the shape of a "mountain". The two arc extinguishing grooves 73 can cut the arcs at two contact groups respectively.

[0116] Of course, the number of the moving contacts 10 and the first static contacts 20 can also be other values, such as 3, etc., which can be specifically set according to the application scenario of the switching device 100.

[0117] In addition, when the switching device 100 further includes a second static contact 50, an arc extinguishing device 70 can also be arranged on one side of the second static contact 50 to extinguish the arc generated when the second static contact 50 is separated from the moving contact 10.

[0118] To sum up, in the embodiment of the present application, the current carrying capacity of the switching device 100 is relatively high, the reliability of the use of the switching device 100 is improved, and the application range of the switching device 100 is relatively wide.

[0119] In the switching device 100 proposed in the present application, the current that the switching device 100 can carry is the sum of the currents that multiple contact groups can carry. In this way, compared with the switching device 100 with only one set of contacts, the current that the switching device 100 in the present application can carry is larger, which is equivalent to that the rated current of the switching device 100 in the present application is larger, so as to reduce the limitation of the current magnitude on the application of the switching device 100.

[0120] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A switching device, characterized in that, include: At least two moving contacts; At least two first stationary contacts, each corresponding to one of the at least two moving contacts, and each of the at least two first stationary contacts being used to contact or separate from the at least two moving contacts respectively; The incoming terminal is electrically connected to at least two of the first stationary contacts; The outgoing terminal is electrically connected to at least two of the moving contacts when at least two of the first stationary contacts and at least two of the moving contacts are in contact.

2. The switching device according to claim 1, characterized in that, The switching device further includes at least two second stationary contacts that correspond one-to-one with the at least two moving contacts, and the outgoing terminal is electrically connected to the at least two second stationary contacts; At least two first stationary contacts and at least two second stationary contacts are spaced apart. The moving contact has a first contact end and a second contact end opposite to each other. The first stationary contacts are used to contact or separate from the first contact end of the moving contact, and the second stationary contacts are used to contact or separate from the second contact end of the moving contact. When at least two of the first stationary contacts are in contact with at least two of the moving contacts, at least two of the second stationary contacts are also in contact with at least two of the moving contacts.

3. The switching device according to claim 1, characterized in that, The switching device further includes a housing, the housing having a mounting cavity inside, at least two of the moving contacts and at least two of the first stationary contacts being disposed in the mounting cavity, the moving contacts being movable within the mounting cavity so that the moving contacts can contact or separate from the first stationary contacts; The housing is provided with a first wiring hole and a second wiring hole that communicate with the mounting cavity. The incoming terminal extends out of the mounting cavity through the first wiring hole, and the outgoing terminal extends out of the mounting cavity through the second wiring hole.

4. The switching device according to claim 3, characterized in that, A rotating shaft is rotatably disposed on the cavity wall of the mounting cavity, and at least two moving contacts are spaced apart on the rotating shaft along the axial direction of the rotating shaft; At least two of the first stationary contacts are fixed at intervals along the axial direction of the rotating shaft to the cavity wall of the mounting cavity. The rotating shaft can drive at least two of the moving contacts to rotate so that at least two of the moving contacts can contact or separate from at least two of the first stationary contacts.

5. The switching device according to claim 4, characterized in that, The movable contact includes a first movable contact plate and a second movable contact plate, both of which are disposed on the rotating shaft, and there is a gap between the first movable contact plate and the second movable contact plate. When the moving contact is connected to the first stationary contact, the first stationary contact is embedded in the gap and abuts against both the first moving contact plate and the second moving contact plate.

6. The switching device according to claim 4, characterized in that, The incoming terminal includes a terminal block and a fixing plate that are connected to each other. At least part of the fixing plate is located in the mounting cavity and is connected to the cavity wall of the mounting cavity. The terminal block extends out of the mounting cavity through the first wiring hole. At least two of the first stationary contacts are spaced apart and connected to the side of the fixed plate facing the rotating shaft.

7. The switching device according to claim 3, characterized in that, The outer casing includes a first housing and a second housing, wherein the first housing and the second housing are fastened together to form the mounting cavity; The first wiring hole is disposed in either the first housing or the second housing, and the second wiring hole is disposed in either the first housing or the second housing; Alternatively, a portion of the first wiring hole may be disposed in the first housing, and the remaining portion of the first wiring hole may be disposed in the second housing; a portion of the second wiring hole may be disposed in the first housing, and the remaining portion of the second wiring hole may be disposed in the second housing.

8. The switching device according to claim 1, characterized in that, The switching device further includes an arc-extinguishing device, which is opposite to at least two of the first stationary contacts; The arc-extinguishing device is used to cut the electric arc generated between the moving contact and the first stationary contact when the moving contact and the first stationary contact switch from being connected to being disconnected.

9. The switching device according to claim 8, characterized in that, The arc extinguishing device includes a mounting component and a plurality of arc extinguishing grids. The mounting component has a first side and a second side facing each other, and the plurality of arc extinguishing grids are spaced apart on the first side of the mounting component. The second side of the mounting component is provided with at least two arc-extinguishing grooves, and the at least two arc-extinguishing grooves correspond one-to-one with the at least two first stationary contacts; The bottom of the arc-extinguishing groove is provided with a through hole. When an electric arc is generated between the moving contact and the first stationary contact, the electric arc flows through the through hole and the arc-extinguishing groove to the arc-extinguishing grid plate, which can cut the electric arc.

10. An electric power system, characterized in that, The power system includes the switching device according to any one of claims 1-9.

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