Isolating switch, power conversion device, and power supply system

Abstract

The present application discloses an isolating switch, a power conversion device, and a power supply system, comprising a housing, a knob, an operating mechanism, a first trip device, and a second trip device; the actuator of the first trip device and the actuator of the second trip device both correspond to the lock assembly, and the actuator of the first trip device and the actuator of the second trip device both include an actuating position and a reset position; after receiving a signal, the actuator of any trip device moves to the actuating position, causing the operating mechanism to trip; when the actuator of any trip device is in the actuating position, it blocks the lock assembly so that it cannot be restored to the locked state; when the actuators of all trip devices are in the reset position, the obstruction to the lock assembly is released; a reset button is movably provided on the housing, and the reset button is at least partially exposed outside the housing. After the second trip device is actuated, the user drives the reset button to move to restore the actuator of the second trip device to the reset position; the present application has the characteristic of avoiding user misoperation.

Description

Technical Field

[0001] The present application relates to an isolating switch, which is applied in a power supply system. Background Art

[0002] Isolating switches are often installed in inverters to control the power on and off of the circuit.

[0003] Existing disconnectors also have an automatic tripping function, which is achieved by utilizing an operating mechanism and a trip unit. When the disconnector is closed, the operating mechanism remains in the closed position due to its own locking assembly. When a line fault occurs, the host computer sends a tripping signal to the trip unit, which activates the trip unit, unlocking the operating mechanism's locking assembly and causing the operating mechanism to trip due to the internal energy storage spring. After activation, the trip unit is reset by the user operating the operating mechanism.

[0004] Although the disconnector of the above structure can realize automatic tripping, it plays a certain protective role on the line.

[0005] In actual product applications, there are many circuit failure scenarios, which can be categorized into general failures and severe failures.

[0006] If it is a general fault, the user is allowed to directly control the operating mechanism to close the circuit breaker. However, for serious faults, the user must unpack and inspect the inverter, otherwise directly closing the circuit breaker may pose a safety hazard.

[0007] However, for the disconnector structure described above, whether it trips due to a general fault or a serious fault, it relies on a tripping device, and the reset of this tripping device is tied to the operating mechanism. After a serious fault occurs, the user may operate the operating mechanism without first inspecting the device, causing the disconnector to reclose, posing a safety hazard.

[0008] Therefore, how to design a multi-trip structure so that after a serious fault occurs, the user must open the box and operate before closing the operating mechanism again is a direction worthy of research. Summary of the Invention

[0009] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide an isolating switch, a power conversion device, and a power supply system.

[0010] The present application provides: an isolating switch, wherein the isolating switch comprises a contact unit and an operating unit;

[0011] The contact unit includes a moving contact and a stationary contact. The moving contact is brought into contact with and separated from the stationary contact by the operating mechanism.

[0012] An operating unit, comprising a housing, a knob, an operating mechanism, a first release, and a second release;

[0013] The knob is located above the first surface of the housing and is used to connect to the operating mechanism so that the user can operate the operating mechanism;

[0014] The operating mechanism includes an energy storage mechanism and a lock assembly. When the disconnector is closed, the lock assembly is in a locked state and keeps the energy storage mechanism in an energy storage state.

[0015] The actuator of the first trip unit and the actuator of the second trip unit both correspond to the lock assembly, and the actuator of the first trip unit and the actuator of the second trip unit both include an actuating position and a reset position; after receiving a signal, the actuator of any trip unit moves to the actuating position, drives the lock assembly to unlock, and the energy storage mechanism releases energy to trip the operating mechanism; when the actuator of any trip unit is in the actuating position, it blocks the lock assembly so that it cannot return to the locked state; when the actuators of all trip units are in the reset position, the obstruction to the lock assembly is released;

[0016] The reset of the actuator of the first trip unit is associated with the operating mechanism. After the first trip unit is actuated, the user operates the tripped operating mechanism to restore the actuator of the first trip unit to the reset position.

[0017] A reset button is movably provided on the housing, and the reset button is at least partially exposed outside the housing. The reset of the actuator of the second release is associated with the reset button. After the second release is actuated, the user drives the reset button to move to restore the actuator of the second release to the reset position.

[0018] In some embodiments of the present application, the housing includes a second surface, and the contact unit is arranged on the second surface; the reset button is arranged on a surface of the housing other than the first surface and the second surface.

[0019] In some embodiments of the present application, the housing has a trip chamber and an operating mechanism chamber, the trip chamber is located on one side of the operating mechanism chamber; the operating mechanism is located in the operating mechanism chamber, and the locking assembly is arranged close to the trip chamber; the first trip and the second trip are both located in the trip chamber.

[0020] In some embodiments of the present application, the housing includes a base and a mounting plate, the side wall of the base has a notch, the mounting plate is adapted to the notch, the mounting plate and the base are detachably fixed to fill the notch, and the reset button is movably provided on the mounting plate; the second release or all releases are fixed on the mounting plate and then installed in the base through the mounting plate, or the second release or all releases are placed in the base through the notch and fixed to the base.

[0021] In some embodiments of the present application, an interface is further included, and the first release and the second release are electrically connected to their respective interfaces and receive signals through the interfaces; the interface is fixed on the mounting plate and then installed in the base through the mounting plate, or the interface is placed in the base through the notch and fixed to the base.

[0022] In some embodiments of the present application, a mounting groove, a wiring groove and a shielding member are also provided on the mounting plate; an interface is provided in the mounting groove, and the first release and the second release are connected to their respective interfaces through their respective leads; the wiring groove is connected to the mounting groove, and the leads of the first release and the second release pass through the wiring groove; the shielding member is detachably fixed to the mounting plate, and the shielding member is used to shield the leads in the wiring groove and limit the interface from being separated from the mounting groove.

[0023] In some embodiments of the present application, the reset button has a reset mark or the housing has a reset mark.

[0024] In some embodiments of the present application, the reset button has a tripper mark or the housing has a tripper mark.

[0025] In some embodiments of the present application, the reset button and the actuating member of the second trip unit are arranged to move synchronously, and the movement of the actuating member of the second trip unit is rotation or sliding along a straight line.

[0026] In some embodiments of the present application, the reset button and the actuator of the second release are arranged in linkage, the actuator of the second release moves in a straight line by sliding, and the reset button moves in a rotational manner.

[0027] In some embodiments of the present application, the reset button and the actuator of the second release are arranged in linkage, the motion of the actuator of the second release is rotation, and the motion of the reset button is sliding along a straight line.

[0028] In some embodiments of the present application, a reset spring is further included, and the reset button includes a first position and a second position; the reset button and the actuator of the second release have the same movement form, both of which are rotation or sliding along a straight line; the reset button and the actuator of the second release form abutment when the reset button moves from the first position to the second position, so that the reset button drives the actuator of the second release to reset; the reset spring is connected to the reset button and provides a restoring force for the reset button to move to the second position, and the reset button releases the abutment relationship with the actuator of the second release when it moves to the second position.

[0029] A power conversion device, comprising a chassis, a control unit, and the aforementioned isolating switch; the knob is exposed outside the chassis for user operation, and the reset button is located inside the chassis; the control unit is electrically connected to a first release and a second release, and is used to send a trip signal to the first release and / or the second release when a line fault occurs.

[0030] A power supply system includes a power conversion device, a control unit, and the above-mentioned isolating switch; the control unit is independent of the power conversion device, the isolating switch is installed in the power conversion device, and the knob is exposed outside the power conversion device; the control unit is electrically connected to a first release and a second release through the power conversion device, and is used to send a trip signal to the first release and / or the second release when a line fault occurs.

[0031] Compared with the prior art, this application has the following advantages:

[0032] The above structure effectively prevents user misoperation, especially when the inverter requires unpacking and inspection before reclosing (severe faults). This is achieved because the first and second trip units can respond to two different fault severity levels: general faults and severe faults. The first trip unit can be activated in response to general faults. Furthermore, after the disconnector is installed in the inverter, the housing is inside the inverter, with only the knob exposed. In such fault situations, the first trip unit can be reset by operating the operating mechanism using the knob, and then the operating mechanism can be closed. The second trip unit, on the other hand, can be activated in response to severe faults. If the second trip unit is not reset, operating the operating mechanism will not close the circuit breaker. The user must open the inverter housing to operate the reset button. After the second trip unit is reset, the operating mechanism can be operated again to close the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A perspective view of an isolating switch according to an embodiment of the present application is shown;

[0035] Figure 2 An exploded view of the moving and static contacts in the disconnector according to an embodiment of the present application is shown;

[0036] Figure 3A schematic diagram of an operating unit in an isolating switch in an embodiment of the present application is shown;

[0037] Figure 4 Schematic diagram showing the operating unit of the disconnector in the embodiment of the present application after the top cover is removed

[0038] Figure 5 A schematic diagram of the base of the operating unit in the disconnector in an embodiment of the present application is shown;

[0039] Figure 6 A schematic diagram of a trip unit and a mounting plate of an isolating switch in an embodiment of the present application is shown;

[0040] Figure 7 A schematic diagram of a trip unit and a mounting plate (without a shielding member) of an isolating switch in an embodiment of the present application is shown;

[0041] Figure 8 A schematic diagram showing a trip unit and a mounting plate (assembly shielding member) of an isolating switch in an embodiment of the present application is shown;

[0042] Figure 9 A schematic diagram of a second release and a reset button of an isolating switch in an embodiment of the present application is shown;

[0043] Figure 10 A schematic diagram of the first and second releases is shown when the operating mechanism of the disconnector in the embodiment of the present application is in the closed state;

[0044] Figure 11 A schematic diagram showing the operating mechanism of the disconnector in the embodiment of the present application when in a tripped state (after the first and second releases are actuated);

[0045] Figure 12 A schematic diagram showing the operation mechanism of the disconnector in the embodiment of the present application being re-engaged to reset the first release is shown;

[0046] Figure 13 A comparison diagram showing the reset position and the actuation position of the second release of the disconnector in the embodiment of the present application is shown;

[0047] Figure 14 A comparison diagram showing the reset position and the actuation position of the first trip unit of the disconnector in the embodiment of the present application is shown;

[0048] Figure 15 A schematic diagram showing another embodiment of a reset button of an isolating switch in an embodiment of the present application is shown;

[0049] Figure 16-17 A schematic diagram showing another embodiment of the reset button of the isolating switch in the embodiment of the present application is shown;

[0050] Figure 18A schematic diagram showing the application of an isolating switch in a power conversion device according to an embodiment of the present application is shown;

[0051] Figure 19 A schematic diagram showing the application of the isolating switch in an embodiment of the present application in a power supply system. DETAILED DESCRIPTION

[0052] The following describes in detail embodiments of the present application. Examples of these embodiments are illustrated in the accompanying drawings, where identical or similar reference numerals throughout represent identical or similar elements or elements having identical or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and intended only to explain the present application and are not to be construed as limiting the present application.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0055] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0056] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. Example

[0057] like Figure 1-19 As shown, an embodiment of the present application is a disconnector, which includes a contact unit 110 and an operating unit 120.

[0058] The contact units 110 are stacked in 12 layers below the operating unit 120. The number of layers of contact units 110 is determined based on the number of control circuits required and is not limited to a 12-layer structure. In addition to this structure where all contact units 110 are stacked below the operating unit 120, the contact units 110 can also be located on both sides of the operating unit 120.

[0059] The contact unit 110 includes, in addition to a housing, a movable contact disc 116, a movable contact 114, and a stationary contact 112 disposed within the housing. The movable contact disc 116 is rotatably disposed, and the movable contact 114 is disposed on the movable contact disc 116. The movable contact 114 is connected to and disconnected from the stationary contact 112 by the rotation of the movable contact disc 116.

[0060] Here, the force required for the rotation of the movable contact disk 116 comes from the operating mechanism 123. Specifically, the movable contact disks 116 of each contact unit 110 are plugged in in sequence, and the movable contact disk 116 located closest to the operating mechanism 123 is plugged in with the output disk of the operating mechanism 123. In this way, the output force of the operating mechanism 123 can be transmitted to each movable contact disk 116, so that the movable contact 114 rotates to contact and separate from the static contact 112, that is, to achieve the effect of "the movable contact 114 is in contact and separation with the static contact 112 under the action of the operating mechanism 123".

[0061] Here, the movable contact 114 and the stationary contact 112 can form either a single-breakpoint structure or a double-breakpoint structure. In a single-breakpoint structure, each contact unit 110 has only one stationary contact 112 and one movable contact 114. In a double-breakpoint structure, each contact unit 110 has two stationary contacts 112 and one movable contact 114. During rotation, one movable contact 114 simultaneously contacts or separates from both stationary contacts 112.

[0062] Here, the movable contact 114 and the stationary contact 112 can be in various contact configurations, including a snap-fit ​​configuration and a clamping configuration. In a snap-fit ​​configuration, the movable contact 114 and the stationary contact 112 are in contact with each other. In a clamping configuration, one of the movable contact 114 and the stationary contact 112 clamps the other. There are various clamping configurations, including two springs and two contact blades, two conductive springs, or a single contact blade and a single spring.

[0063] As a clamping structure, the movable contact 114 includes a first contact blade 114a and a first spring 114b. The first contact blade 114a and the first spring 114b are riveted together, forming a clamping opening between the ends of the first contact blade 114a and the first spring 114b. As the movable contact 114 rotates, the stationary contact 112 extends into the clamping opening, where the first spring 114b deforms to provide clamping force on the stationary contact 112. The first contact blade 114a serves as the primary flow passage.

[0064] The operating unit 120 includes a housing 121 , a knob 122 , an operating mechanism 123 , a first release 124 , and a second release 125 .

[0065] The operating mechanism 123 includes an input shaft 123a, a frame, an energy storage mechanism and a locking assembly 123b.

[0066] The knob 122 is located above the first surface S1 of the housing 121 . The knob 122 is connected to the input shaft 123 a for manipulation by the user.

[0067] The energy storage mechanism is a multi-link structure with a spring, including a lever 123c, a main tension spring, a jump buckle, an upper link, a lower link and an output member.

[0068] The lever 123c is swingably arranged with respect to the frame, and the input shaft 123a is connected to the lever 123c via a conversion structure. The conversion structure here can adopt either gear transmission or connecting rod transmission, as long as it can convert the rotation of the input shaft 123a into the swing of the lever 123c.

[0069] The jumper is rotatably mounted relative to the frame, the upper connecting rod is rotatably mounted with the jumper, the lower connecting rod is hinged to the upper connecting rod, and the output member is rotatably mounted with the lower connecting rod, and the output member is used to cooperate with the output disk. The two ends of the main tension spring are respectively connected to the hinge shafts of the lever 123c and the upper and lower connecting rods.

[0070] The locking assembly 123b includes a locking member 123b1 and a locking member 123b2.

[0071] When the disconnector 100 is in the closed state, the main tension spring is in a deformed state, the lock buckle 123b1 and the re-lock buckle 123b2 are in a locked state, and the trip buckle is also maintained in the current position (that is, the lock buckle 123b1 and the trip buckle are overlapped or overlapped, and the re-lock buckle 123b2 and the lock buckle 123b1 are overlapped or abutted), so that the energy storage mechanism is in a stable state.

[0072] When the locks of the lock catch 123b1 and the re-lock catch 123b2 are released (because the releaser is actuated to rotate the re-lock catch 123b2), the steady state of the energy storage mechanism is broken, and under the action of the main tension spring, the operating mechanism 123 performs a tripping operation.

[0073] The working principle of this operating mechanism 123 has been described in detail in CN219321237U previously applied for by the applicant, and will not be repeated here.

[0074] In this embodiment, the first release 124 is a magnetic flux release. Its actuator (hereinafter referred to as the first actuator 124a for distinction) has an actuation position F1 and a reset position F2. After each actuation (the first actuator 124a reaches the actuation position F1), an external force is required to drive the first actuator 124a to reset the first release 124 (the first actuator 124a returns to the reset position F2).

[0075] Of course, in addition to the flux release, the first release 124 can also adopt other forms of electromagnetic releases, as long as it can meet the principle of using electromagnets, actuated after receiving a trip signal, and will not reset naturally (self-reset), and can only be reset under the action of external force.

[0076] Here, the first actuator 124a is a first push rod 124a'. First push rod 124a' is linked to the first movable core 124b (hereinafter referred to as first movable core 124b for clarity) in the magnetic flux trip. Specifically, when the first trip 124 is energized, the first movable core 124b within the trip 124 moves, causing the first push rod 124a' to move, thereby causing the re-lock 123b2 to move. Here, the first push rod 124a' and the first movable core 124b can move in the same manner, for example, both being linearly sliding or rotating. When the first movable core 124b moves, the first push rod 124a' will also move synchronously.

[0077] Of course, the motion modes of the first push rod 124a' and the first movable iron core 124b can also be different. For example, the first movable iron core 124b can be configured to slide linearly, while the first push rod 124a' can be configured to rotate, forming a linkage between the two (there are many linkage modes, such as abutment, hinge, etc.). During actuation, the sliding of the first movable iron core 124b is converted into the rotation of the first push rod 124a'; during resetting, the rotation of the first push rod 124a' is converted into the sliding of the first movable iron core 124b. Of course, the motion modes here can also be reversed, that is, the first movable iron core 124b can be configured to rotate, while the first push rod 124a' can be configured to slide linearly.

[0078] Of course, as an alternative, the first actuator 124a is the first moving iron core 124b, that is, there is no additional first push rod 124a'. After the first release 124 is energized, the movement of the first moving iron core 124b directly causes the re-lock 123b2 to move (here, the re-lock 123b2 is pushed to rotate, and the re-lock 123b2 can also be pulled to rotate).

[0079] In this embodiment, the second release 125 is a magnetic flux release. Its actuator (hereinafter referred to as the second actuator 125a for distinction) has an actuation position F1 and a reset position F2. After each actuation (the second actuator 125a reaches the actuation position F1), an external force is required to drive the second actuator 125a to reset the second release 125 (the second actuator 125a returns to the reset position F2).

[0080] Of course, in addition to the flux release, the second release 125 can also adopt other forms of electromagnetic releases, as long as it can meet the principle of using electromagnets, actuated after receiving the trip signal, and will not reset naturally (self-reset), and can only be reset under the action of external force.

[0081] Here, the second actuator 125a is a second push rod 125a'. Second push rod 125' is linked to a second movable core 125b (hereinafter referred to as second movable core 125b for clarity) in the magnetic flux trip unit. Specifically, when the second trip unit 125 is energized, the internal second movable core 125b moves, causing the second push rod 125' to move, thereby causing the re-lock 123b2 to move. The second push rod 125' and the second movable core 125b can move in the same manner, for example, both linearly sliding or rotating. When the second movable core 125b moves, the second push rod 125' also moves synchronously.

[0082] Of course, the second push rod 125' and the second movable iron core 125b can also have different motion modes. For example, the second movable iron core 125b can be configured to slide linearly, while the second push rod 125' can be configured to rotate, forming a linkage between the two (there are many linkage modes, such as abutment, hinge, etc.). During actuation, the sliding of the second movable iron core 125b is converted into the rotation of the second push rod 125'; during reset, the rotation of the second push rod 125' is converted into the sliding of the second movable iron core 125b. Of course, the motion modes here can also be reversed, that is, the second movable iron core 125b can be configured to rotate, while the second push rod 125' can be configured to slide linearly.

[0083] Of course, as an alternative, the second actuator 125a is a second moving iron core 125b, that is, there is no additional second push rod 125'. After the second release 125 is energized, the movement of the second moving iron core 125b directly causes the re-lock 123b2 to move (here, the re-lock 123b2 is pushed to rotate, and it can also be pulled to rotate).

[0084] Regardless of which of the above-mentioned trip units is actuated, once the first actuating member 124a and / or the second actuating member 125a is actuated, it will remain in the actuating position F1. In this position, the first actuating member 124a and / or the second actuating member 125a will hinder the resetting of the locking assembly 123b. Therefore, as long as the actuating member of any of the trip units is not reset, the operating mechanism 123 cannot be closed again.

[0085] For the first trip unit 124, the reset of its first actuator 124a is associated with the operating mechanism 123. Specifically, the lever 123c of the operating mechanism 123 has a reset portion 123c1. During the re-tripping operation of the operating mechanism 123, the reset portion 123c1 pushes the first actuator 124a of the first trip unit 124 back to the reset position F2. With this reset method, since the disconnector 100 is installed in the inverter chassis 201, only the knob 122 is exposed outside the chassis 201. Therefore, the user can return the first actuator 124a of the first trip unit 124 to the reset position F2 by operating the knob 122 from outside the chassis 201.

[0086] As for the second trip unit 125, its reset requires the use of a reset button 126. The reset button 126 is mounted on the housing 121, with at least a portion exposed outside the housing 121. The reset button 126 is movable relative to the housing 121. This means that the reset button 126 can be displaced or deflected relative to the housing 121, meaning that it can be rotated or slid along a straight line relative to the housing 121. Since the housing 121 is internal to the inverter after the disconnector 100 is installed, the reset button 126 can only be operated by opening the inverter chassis 201.

[0087] With the above-mentioned structural setting, especially when there are some serious faults in the inverter, the second release 125 has been activated and the user must open the chassis 201 to reset the second release 125, which can effectively avoid user misoperation.

[0088] The reset button 126 and the second actuating member 125a of the second release 125 can move in various ways, such as sliding along a straight line or rotating.

[0089] As an implementation method, Figure 1-12 As shown, the reset button 126 and the second actuator 125a of the second release 125 are both arranged to slide along a straight line. In this case, the reset button 126 and the second actuator 125a of the second release 125 are arranged to move synchronously. In this embodiment, the reset button 126 and the second actuator 125a of the second release 125 are integrally formed, so they can achieve synchronous movement. Of course, the reset button 126 and the second actuator 125a of the second release 125 can also be two independently formed components, fixed together by screw fastening, interference fit, plug-in connection, riveting, etc. to achieve synchronous movement.

[0090] As a variation of this embodiment, the reset button 126 and the second release 125 can also be rotatably mounted. The reset button 126 and the second actuator 125a of the second release 125 can be integrally formed; alternatively, the reset button 126 and the second actuator 125a of the second release 125 can be separate components that are secured together by screws, an interference fit, a splice, or rivets to achieve synchronized movement.

[0091] As another embodiment, Figure 15As shown, the reset button 126 rotates, while the second actuator 125a of the second release 125 slides along a straight line. The reset button 126 and the second actuator 125a of the second release 125 are interlocked. Here, the reset button 126 and the second actuator 125a of the second release 125 form a slider crank mechanism. When the second actuator 125a of the second release 125 slides, it rotates the reset button 126; and when the reset button 126 rotates, it also slides the second actuator 125a of the second release 125.

[0092] In this manner, since the reset button 126 moves in a rotational manner, it occupies relatively little space, which is a more ideal choice in situations where some structural space or operating space is limited.

[0093] As a variation of this approach, the second actuator 125a of the second release 125 can also be configured to rotate, while the reset button 126 can be configured to slide along a straight line, with the two moving in a linked manner. In this arrangement, when the second actuator 125a of the second release 125 rotates, it can cause the reset button 126 to slide; and when the reset button 126 slides, it can also cause the second actuator 125a of the second release 125 to rotate.

[0094] As another embodiment, Figure 16-17 As shown, the reset button 126 and the second actuator 125a of the second release 125 move in the same manner, but they do not move completely synchronously. The second actuator 125a is located to one side of the reset button 126. In this configuration, a reset spring 127 is also provided. Each time the reset button 126 resets the first actuator 124a of the second release 125, the reset button 126 returns to its original position under the action of the reset spring 127. Specifically, the reset button 126 includes a first position F3 and a second position. The reset button 126 slides along a straight line. When the reset button 126 moves from the first position F3 to the second position under the action of an external force, it will move against the second actuator 125a, driving the second actuator 125a of the second release 125 (the second actuator 125a of the second release 125 after actuation) to return to the reset position F2; at the same time, the reset spring 127 will be compressed. After the external force disappears, the reset spring 127 will drive the reset button 126 to return to the first position F3.

[0095] As a modified implementation of this approach, the movement forms of the reset button 126 and the second actuating member 125 a of the second release 125 may also be set to rotation.

[0096] The reset button 126 with the reset spring 127 can ensure that the reset button 126 is in the same position after each movement.

[0097] Regardless of the above-mentioned movement form of the reset button 126, it can be set on any surface of the shell 121, and can achieve the above-mentioned effect of resetting only by opening the chassis 201. As a more preferred embodiment, the shell 121 has a hexahedral structure, and the shell 121 includes a first surface S1, a second surface S2, and four side surfaces S3 connected in sequence. The contact units 110 are arranged in sequence on the second surface S2, the knob 122 is located above the first surface S1, and the reset button 126 is arranged on one of the side surfaces S3, that is, a surface of the shell 121 other than the first surface S1 and the second surface S2. Such a design will make the product more compact and also facilitate the user to operate the reset button 126.

[0098] Housing 121 houses a trip chamber 121b and an operating mechanism chamber 121a. Trip chamber 121b is located to one side of operating mechanism chamber 121a. Operating mechanism 123 is housed within operating mechanism chamber 121a, while first and second trip units 124 and 125 are housed within trip chamber 121b. This arrangement of all trip units within a single trip chamber 121b creates a more compact overall structure and facilitates trip unit installation.

[0099] The housing 121 includes a base 1210, a cover 1212, and a mounting plate 1211. The sidewall of the base 1210 has a notch 1213, into which the mounting plate 1211 fits, and the mounting plate 1211 is detachably secured to the base 1210. The detachable securing mechanism employed herein is specifically screw fastening, but alternatives include snap fastening, snap fastening, and screw fastening.

[0100] The cover 1212 is fixed to the base 1210 to close the opening of the base 1210 (the opening is connected to the operating mechanism chamber 121a and is used to install the operating mechanism 123). The cover 1212 and the base 1210 are fixed here by screws, but riveting, snap fastening, etc. can also be used.

[0101] In the case of a mounting plate 1211, the reset button 126 is movably mounted on the mounting plate 1211. The second release 125 can be directly inserted into the base 1210 through the notch 1213 and fixed thereto, or it can be first fixed to the mounting plate 1211 and then, as the mounting plate 1211 is fixed, the second release 125 extends through the notch 1213 into the base 1210.

[0102] In this embodiment, screws are used to secure the second release 125 to the mounting plate 1211. This structure allows the second release 125 and the mounting plate 1211 to form a small module, which facilitates product design and assembly, and further facilitates replacement and repair of the second release 125 if damaged. Of course, the fastening method here is not limited to screws; for example, snap-fitting, plug-in, and other methods are also acceptable.

[0103] In this embodiment, the first release 124 is the same as the second release 125 and is fixed on the mounting plate 1211. Of course, the first release 124 can also be placed in the base 1210 through the notch 1213 and fixed to the base 1210.

[0104] The first release 124 and the second release 125 both receive signals through their respective interfaces 128. Figure 6-8 As shown, in this embodiment, the interface 128 includes a connector 128a and a circuit board 128b. The connector 128a is soldered to the circuit board 128b. The first and second releases 124 and 125 are connected to the circuit board 128b via leads. The first and second releases 124 and 125 utilize different pins on the same connector 128a. Of course, alternatively, the first and second releases 124 and 125 can each have a separate connector 128a. Alternatively, the circuit board 128b can be omitted, and the interface 128 consists solely of the connector 128a, with the first and second releases 124 and 125 connected to the connector 128a via leads.

[0105] For this interface 128, it can be directly fixed in the base 1210 through the notch 1213 and fixed to the base 1210, or it can be first fixed on the mounting plate 1211, and then as the mounting plate 1211 is fixed, the interface 128 extends from the notch 1213 into the base 1210.

[0106] In this embodiment, the interface 128 is fixed to the mounting plate 1211. This allows the trip unit and its accessories (interface 128, leads), etc., to be located on the mounting plate 1211, forming a small module with the mounting plate 1211. This facilitates assembly of the trip unit and facilitates replacement and repair of damaged units. Of course, the fastening method here is not limited to screws; other methods, such as snap-on or plug-in connections, are also acceptable.

[0107] There are many ways to fix the interface 128 on the mounting plate 1211, such as directly fastening the interface 128 to the mounting plate 1211 with screws; or, using a hook to restrict the interface 128; or, opening a mounting groove 1211a for the interface 128 on the mounting plate 1211, and then using a blocking member 1214 to limit the interface 128.

[0108] In this embodiment, mounting plate 1211 is provided with mounting slot 1211a and wiring slot 1211b. Mounting slot 1211a communicates with wiring slot 1211b. Interface 128 (connector 128a and circuit board 128b) is located within mounting slot 1211a. Leads for first and second releases 124, 125 pass through wiring slot 1211b and connect to circuit board 128b. A shield 1214 is removably secured to mounting plate 1211, enclosing mounting slot 1211a and wiring slot 1211b. This shields the leads in wiring slot 1211b and prevents interface 128 from exiting mounting slot 1211a. Here, the blocking member 1214 and the mounting plate 1211 are fixed by screws. In addition to screw fixation, snap-fit ​​fixation, interference fit, etc. can also be used, as long as the blocking member 1214 and the mounting plate 1211 can be detachably fixed.

[0109] The reset button 126 has a reset symbol RE to help users understand its function and reset direction. In this embodiment, the reset symbol RE is a combination of graphics and text. The graphics indicate the direction (the graphics can be arrows, triangles, hand gestures, and other icons indicating direction), and the text can be Chinese characters or letters. Of course, the reset symbol RE can also be just graphics or text.

[0110] In addition, the reset mark RE can also be set on the housing 121 as long as it is set close to the reset button 126.

[0111] Here, as a more intuitive display method, the reset indicator RE is located on the reset button 126, and the reset button 126 and the second actuator 125a of the second release 125 are configured to move synchronously. In this synchronous movement, the reset indicator RE of the reset button 126 is exposed from the housing 121 after the second actuator 125a of the second release 125 is actuated. When the second actuator 125a of the second release 125 is reset, the reset indicator RE is hidden within the housing 121.

[0112] To help users understand that this reset button is for the trip unit, the reset button 126 has a trip unit identifier TP. In this embodiment, the trip unit identifier TP is text, which can be in Chinese or alphabetic. Alternatively, the reset identifier RE can be a graphic.

[0113] In addition, the trip unit mark TP can also be set on the housing 121, as long as it is set close to the reset button 126.

[0114] Here, as a more intuitive display method, the trip unit identifier TP is located on the reset button 126, and the reset button 126 and the second actuator 125a of the second trip unit 125 are configured to move synchronously. In this synchronous movement, the trip unit identifier TP of the reset button 126 is hidden within the housing 121 after the second actuator 125a of the second trip unit 125 is actuated. When the second actuator 125a of the second trip unit 125 is reset, the trip unit identifier TP is exposed on the housing 121.

[0115] Of course, in order to facilitate the user to better operate the reset button 126, the surface of the reset button 126 also has anti-slip textures and a handle.

[0116] As the above-mentioned isolating switch 100, it can be used in a power conversion device 200, such as an inverter. Figure 18 As shown, this power conversion device includes a chassis 201, a control unit 202, and an isolating switch 100. After the isolating switch 100 is installed in the chassis 201, only the knob 122 is exposed outside the chassis 201. The control unit 202 is electrically connected to the first release 124 and the second release 125 via the interface 128. If a fault occurs in the line, the control unit 202 detects the fault and sends a trip signal to the first release 124 and the second release 125, thereby tripping the isolating switch 100.

[0117] There are many ways to send signals. One way is to send a trip signal to the first trip unit 124 when a general fault occurs, and to send a trip signal to the second trip unit 125 when a severe fault occurs. Another way is to send a trip signal to the first trip unit 124 when a general fault occurs, and to send trip signals to both the first trip unit 124 and the second trip unit 125 when a severe fault occurs.

[0118] Regardless of the method, when a serious fault occurs, the second trip device 125 will receive a trip signal and be activated, thereby tripping the operating mechanism 123. After tripping, the user must open the chassis 201 to reset the second trip device 125 and close the operating mechanism 123 again, effectively avoiding misoperation and making it safer and more reliable to use.

[0119] As the above-mentioned isolating switch 100, it can be used in a power supply system, such as Figure 19 As shown, this power supply system includes a DC source 300, a power conversion device 200 (also known as an inverter), and a control unit 202. The isolating switch 100 is installed within the power conversion device 200, with only the knob 122 exposed. The control unit 202 is a controller independent of the power conversion device 200. It electrically connects the control unit 202 to the first and second releases 124, 125 via an adapter component (which can be a circuit board or an adapter) on the power conversion device 200. For example, if a fault occurs in the line, the control unit 202 detects the fault and can send a trip signal to the first and second releases 124, 125, thereby tripping the isolating switch 100.

[0120] The method of sending signals here can refer to the structure of the inverter mentioned above, and will not be repeated here.

[0121] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate different embodiments or examples, and features of different embodiments or examples, described in this specification, unless otherwise inconsistent.

[0122] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An isolating switch, characterized in that: It includes a contact unit and an operating unit; The contact unit includes a moving contact and a stationary contact. The moving contact is brought into contact with and separated from the stationary contact by the operating mechanism. An operating unit comprising a housing, a knob, an operating mechanism, a first release, and a second release; The knob is located above the first surface of the housing and is used to connect to the operating mechanism so that the user can operate the operating mechanism; The operating mechanism includes an energy storage mechanism and a lock assembly. When the disconnector is closed, the lock assembly is in a locked state and keeps the energy storage mechanism in an energy storage state. The actuator of the first trip unit and the actuator of the second trip unit both correspond to the lock assembly, and the actuator of the first trip unit and the actuator of the second trip unit both include an actuating position and a reset position; after receiving a signal, the actuator of any trip unit moves to the actuating position, drives the lock assembly to unlock, and the energy storage mechanism releases energy to trip the operating mechanism; when the actuator of any trip unit is in the actuating position, it blocks the lock assembly so that it cannot return to the locked state; when the actuators of all trip units are in the reset position, the obstruction to the lock assembly is released; The resetting of the actuator of the first trip unit is associated with the operating mechanism. After the first trip unit is actuated, the user operates the tripped operating mechanism to restore the actuator of the first trip unit to the reset position. A reset button is movably provided on the housing, and the reset button is at least partially exposed outside the housing. The resetting of the actuator of the second release is associated with the reset button. After the second release is actuated, the user drives the reset button to move to restore the actuator of the second release to the reset position.

2. The isolating switch according to claim 1, characterized in that: The housing includes a second surface, and the contact unit is arranged on the second surface; the reset button is arranged on a surface of the housing other than the first surface and the second surface.

3. The isolating switch according to claim 1, characterized in that: The housing has a release chamber and an operating mechanism chamber, the release chamber is located on one side of the operating mechanism chamber; the operating mechanism is located in the operating mechanism chamber, and the locking assembly is arranged close to the release chamber; the first release and the second release are both located in the release chamber.

4. The isolating switch according to claim 1, characterized in that: The housing includes a base and a mounting plate. The side wall of the base has a notch. The mounting plate fits into the notch. The mounting plate and the base are detachably fixed to fill the notch. The reset button is movably arranged on the mounting plate. The second release or all the releases are fixed on the mounting plate and then mounted in the base through the mounting plate, or the second release or all the releases are placed in the base through the notch and fixed to the base.

5. The isolating switch according to claim 4, characterized in that: It also includes an interface, the first release and the second release are electrically connected to their respective interfaces and receive signals through the interface; the interface is fixed on the mounting plate and then installed in the base through the mounting plate, or the interface is placed in the base through the notch and fixed to the base.

6. The isolating switch according to claim 5, characterized in that: The mounting plate is also provided with a mounting groove, a wiring groove and a shielding member; an interface is provided in the mounting groove, and the first release and the second release are connected to their respective interfaces through their respective leads; the wiring groove is connected to the mounting groove, and the leads of the first release and the second release pass through the wiring groove; the shielding member is detachably fixed to the mounting plate, and the shielding member is used to shield the leads in the wiring groove and limit the interface from being separated from the mounting groove.

7. The isolating switch according to claim 1, characterized in that: The reset button has a reset mark or the housing has a reset mark; or / and, the reset button has a release mark or the housing has a release mark.

8. The isolating switch according to claim 1, characterized in that: The reset button and the actuator of the second release are arranged to move synchronously, and the movement of the actuator of the second release is rotation or sliding along a straight line; Alternatively, the reset button and the actuator of the second release are arranged in linkage, the motion of the actuator of the second release is sliding along a straight line, and the motion of the reset button is rotation; Alternatively, the reset button and the actuating member of the second release are arranged in linkage, the actuating member of the second release moves in a rotational manner, and the reset button moves in a straight line.

9. The isolating switch according to claim 1, characterized in that: It also includes a reset spring, and the reset button includes a first position and a second position; the reset button and the actuator of the second release have the same movement form, both of which are rotation or sliding along a straight line; the reset button and the actuator of the second release form abutment when the reset button moves from the first position to the second position, so that the reset button drives the actuator of the second release to reset; the reset spring is connected to the reset button and provides a restoring force for the reset button to move to the second position. When the reset button moves to the second position, the abutment relationship with the actuator of the second release is released.

10. A power conversion device, characterized in that: A chassis, a control unit, and an isolating switch according to any one of claims 1 to 9; the knob is exposed outside the chassis for user operation, and the reset button is inside the chassis; The control unit is electrically connected to the first release and the second release, and is used to send a trip signal to the first release and / or the second release when a line fault occurs.

11. A power supply system, characterized in that: It comprises a power conversion device, a control unit and an isolating switch as described in any one of claims 1 to 9; the control unit is independent of the power conversion device, the isolating switch is installed in the power conversion device, and the knob is exposed outside the power conversion device; the control unit is electrically connected to the first release and the second release through the power conversion device, and is used to send a trip signal to the first release and / or the second release when a line fault occurs.

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