Isolation switch, power conversion device and power supply system

Abstract

The invention discloses an isolating switch, a power conversion device and a power supply system. The isolating switch comprises a shell, a knob, an operating mechanism, a first release and a second release, an actuating piece of the first release and an actuating piece of the second release correspond to the lock catch assembly, and each of the actuating piece of the first release and the actuating piece of the second release comprises an actuating position and a reset position; after any release receives the signal, the actuating piece of the release moves towards the actuating position, so that the operating mechanism trips; when the actuating piece of any release is at the actuating position, the lock catch assembly is blocked and cannot be recovered to the locking state; when the actuating pieces of all the trippers are located at the reset positions, the blocking to the lock catch assembly is relieved; a reset key is movably arranged on the shell, at least part of the reset key is exposed out of the shell, and after the second tripper is actuated, a user drives the reset key to move so as to enable the actuating piece of the second tripper to restore to a reset position; the method has the characteristic of avoiding misoperation of the user.

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 on and off of power lines.

[0003] The existing disconnector also has an automatic tripping function, which is realized by using an operating mechanism and a release. When the disconnector is in the closed state, the operating mechanism remains in the closed state under the action of its own lock assembly; when a line fault occurs, the host computer sends a tripping signal to the release, and the release is actuated to unlock the lock assembly of the operating mechanism, and the operating mechanism trips under the action of the internal energy storage spring. After the release is actuated, it is reset by the user operating the operating mechanism.

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

[0005] In the actual product application process, there are many circuit failure situations, such as 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 direct closing of the circuit breaker may pose a safety hazard.

[0007] However, for the disconnector of the above structure, whether it is a general fault trip or a serious trip, it relies on a tripper, and the reset of the tripper is related to the operating mechanism. After a serious fault occurs, the user may operate the operating mechanism without unpacking and checking, causing the disconnector to close again, which poses 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 it comprises 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 under the action of 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 be connected 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 in the closed state, the lock assembly is in a locked state and keeps the energy storage mechanism in the energy storage state. The actuator of the first release and the actuator of the second release both correspond to the lock assembly, and the actuator of the first release and the actuator of the second release both include an actuating position and a reset position; after receiving a signal, the actuator of any release 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 release is in the actuating position, the lock assembly is blocked so that it cannot be restored to the locked state; when the actuators of all releases are in the reset position, the obstruction to the lock assembly is released; The reset of the actuator of the first release is associated with the operating mechanism. After the first release is actuated, the user operates the tripped operating mechanism to operate so as to restore the actuator of the first release 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 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.

[0011] 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 key is arranged on a surface of the housing other than the first surface and the second surface.

[0012] In some embodiments of the present application, 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.

[0013] 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 arranged on the mounting plate; the second releaser or all releasers are fixed on the mounting plate and then installed in the base through the mounting plate, or the second releaser or all releasers are placed in the base through the notch and fixed to the base.

[0014] In some embodiments of the present application, an interface is also 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 a mounting plate, and then installed in the base through the mounting plate, or the interface is placed in the base through a notch and fixed to the base.

[0015] 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.

[0016] In some embodiments of the present application, the reset button has a reset mark or the housing has a reset mark.

[0017] In some embodiments of the present application, the reset button has a release mark or the housing has a release mark.

[0018] In some embodiments of the present application, the reset button and the actuating member of the second release are arranged to move synchronously, and the movement form of the actuating member of the second release is rotation or sliding along a straight line.

[0019] In some embodiments of the present application, the reset button and the actuator of the second release are arranged in linkage, the movement form of the actuator of the second release is sliding along a straight line, and the movement form of the reset button is rotation.

[0020] In some embodiments of the present application, the reset button and the actuator of the second release are arranged in linkage, the movement form of the actuator of the second release is rotation, and the movement form of the reset button is sliding along a straight line.

[0021] In some embodiments of the present application, a reset spring is further included, and the reset key includes a first position and a second position; the reset key 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 key and the actuator of the second release form abutment when the reset key moves from the first position to the second position, so that the reset key drives the actuator of the second release to reset; the reset spring is connected to the reset key and provides a restoring force for the reset key to move to the second position, and the reset key releases the abutment relationship with the actuator of the second release when it moves to the second position.

[0022] A power conversion device, including a chassis, a control unit and the above-mentioned isolating switch; 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.

[0023] A power supply system, comprising 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 with 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.

[0024] Compared with the prior art, the present invention has the following advantages: The above structure can effectively avoid user misoperation, especially when the inverter has some situations that must be unpacked for inspection before re-closing (serious fault). The reason for achieving such an effect is that: through the setting of the first release and the second release, it can respond to two different degrees of faults, such as general faults and serious faults. For the first release, it can be actuated in response to general faults. In addition, after the isolating switch is installed in the inverter, the shell is in the inverter, and only the knob is exposed. In this type of fault situation, the first release can be reset by operating the operating mechanism through the knob, and then the operating mechanism can be closed. As for the second release, it can be actuated in response to serious faults. In the case that the second release is not reset, even if the operating mechanism is operated, it cannot be closed. The user must open the inverter box to operate the reset button, so that the second release can be reset before the operating mechanism can be operated again to close it. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A three-dimensional diagram of an isolating switch according to an embodiment of the present application is shown; Figure 2 An exploded view of the moving and static contacts in the disconnector according to the embodiment of the present application is shown; Figure 3 A schematic diagram of an operating unit in an isolating switch in an embodiment of the present application is shown; Figure 4 A schematic diagram showing the operating unit of the isolating switch in the embodiment of the present application after the top cover is removed Figure 5 A schematic diagram of a base of an operating unit in an isolating switch in an embodiment of the present application is shown; Figure 6 A schematic diagram of a tripper and a mounting plate of an isolating switch in an embodiment of the present application is shown; Figure 7 A schematic diagram of a tripper and a mounting plate (without a shielding member) of an isolating switch in an embodiment of the present application is shown; Figure 8 A schematic diagram of a tripper and a mounting plate (assembly shielding member) of an isolating switch in an embodiment of the present application is shown; Fig. 9 A schematic diagram showing a second release and a reset button of an isolating switch in an embodiment of the present application is shown; Fig.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 a closed state; Fig.11 A schematic diagram showing the operating mechanism of the disconnector in the embodiment of the present application when it is in a tripped state (after the first and second releases are actuated); Fig.12 A schematic diagram showing the operation mechanism of the isolating switch in the embodiment of the present application being re-engaged to reset the first release; Fig.13 A comparison diagram of the reset position and the actuation position of the second release of the disconnector in the embodiment of the present application is shown; Fig.14 A comparison diagram of the reset position and the actuation position of the first release of the disconnector in the embodiment of the present application is shown; Fig.15 A schematic diagram showing another implementation of a reset button of an isolating switch in an embodiment of the present application; Figure 16-17 A schematic diagram showing another implementation of a reset button of an isolating switch in an embodiment of the present application is shown; Fig.18 A schematic diagram showing the application of an isolating switch in a power conversion device according to an embodiment of the present application; Fig.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

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] 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" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Example

[0032] like Figure 1-19As shown, an embodiment of the present application is a disconnector, wherein it includes a contact unit 110 and an operating unit 120.

[0033] The contact unit 110 has 12 layers, which are stacked sequentially below the operating unit 120. Here, the number of layers of the contact unit 110 is designed according to the number of control circuits actually required, and is not limited to a 12-layer structure. Of course, in addition to this structure in which all the contact units 110 are stacked below the operating unit 120, the contact units 110 can also be arranged on both sides of the operating unit 120.

[0034] As for the contact unit 110, in addition to the housing, it also has a movable contact disc 116, a movable contact 114 and a stationary contact 112 arranged in the housing. The movable contact disc 116 is rotatably arranged, and the movable contact 114 is arranged on the movable contact disc 116. Through the rotation of the movable contact disc 116, the movable contact 114 realizes connection and separation with the stationary contact 112.

[0035] Here, the force required for the rotation of the moving contact disk 116 comes from the operating mechanism 123. Specifically, the moving contact disks 116 of each contact unit 110 are plugged in sequentially, and the moving contact disk 116 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 moving contact disk 116, so that the moving contact 114 rotates to contact and separate from the static contact 112, that is, to achieve the effect of "the moving contact 114 is in contact and separation with the static contact 112 under the action of the operating mechanism 123".

[0036] Here, the moving contact 114 and the stationary contact 112 can form a single breakpoint structure or a double breakpoint structure. The single breakpoint structure is that each contact unit 110 has only one stationary contact 112 and one moving contact 114. The double breakpoint structure is that each contact unit 110 has two stationary contacts 112 and one moving contact 114, and one moving contact 114 contacts with two stationary contacts 112 at the same time when rotating, or separates from two stationary contacts 112 at the same time.

[0037] Here, there are many contact forms between the moving contact 114 and the stationary contact 112, which can be a snap-fit ​​structure or a clamping structure. The snap-fit ​​structure is that the moving contact 114 and the stationary contact 112 are in contact with each other in a surface-to-surface manner. The clamping structure is that when the moving contact 114 and the stationary contact 112 are in contact, one of them clamps the other. There are many clamping structures, which can be in the form of two springs and two contact knives, two conductive springs, or a single contact knife and a single spring.

[0038] As a clamping structure, the moving contact 114 includes a first contact blade 114a and a first elastic sheet 114b. The first contact blade 114a and the first elastic sheet 114b are fastened by riveting, and the first contact blade 114a and the first elastic sheet 114b form a clamp at both ends. As the moving contact 114 rotates, the stationary contact 112 extends into the clamp, where the first elastic sheet 114b deforms to provide a clamping force on the stationary contact 112, and the first contact blade 114a serves as the main flow-through component.

[0039] The operating unit 120 includes a housing 121 , a knob 122 , an operating mechanism 123 , a first release 124 and a second release 125 .

[0040] The operating mechanism 123 includes an input shaft 123a, a frame, an energy storage mechanism and a locking assembly 123b.

[0041] 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.

[0042] The energy storage mechanism is a multi-link structure with springs, including a lever 123c, a main tension spring, a jump buckle, an upper link, a lower link and an output member.

[0043] The lever 123c is swingably arranged with the frame, and the input shaft 123a is connected to the lever 123c via a conversion structure, wherein the conversion structure may adopt either gear transmission or connecting rod transmission, as long as the rotation of the input shaft 123a can be converted into the swing of the lever 123c.

[0044] The jumper is rotatably arranged relative to the frame, the upper connecting rod and the jumper are rotatably arranged, the lower connecting rod is hinged with the upper connecting rod, the output member is rotatably arranged 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.

[0045] The locking assembly 123b includes a locking member 123b1 and a locking member 123b2.

[0046] When the isolating switch 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 steady state.

[0047] When the locks of the lock catch 123b1 and the re-lock catch 123b2 are released (because the releaser is actuated to cause the re-lock catch 123b2 to rotate), 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.

[0048] The working principle of the operating mechanism 123 has been described in detail in CN219321237U previously applied for by the applicant, and will not be repeated here.

[0049] In this embodiment, the first release 124 is a magnetic flux release, and 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).

[0050] 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, actuate after receiving a trip signal, and will not reset naturally (self-reset), and can only be reset under the action of external force.

[0051] Here, the first actuator 124a is a first push rod 124a', and the first push rod 124a' is linked with the first moving iron core 124b (hereinafter referred to as the first moving iron core 124b for distinction) in the magnetic flux release, that is, after the first release 124 is energized, the internal first moving iron core 124b moves to make the first push rod 124a' move, thereby making the release 123b2 move. Here, the movement form of the first push rod 124a' and the first moving iron core 124b can be the same, for example, both are linearly sliding or rotating, and when the first moving iron core 124b moves, the first push rod 124a' will also move synchronously.

[0052] Of course, the movement forms 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 is set to slide linearly, and the first push rod 124a' is set to rotate, and a linkage is formed between the two (there are many linkage methods, such as abutment, hinge, etc.). When actuated, the sliding of the first movable iron core 124b is converted into the rotation of the first push rod 124a'; when reset, the rotation of the first push rod 124a' is converted into the sliding of the first movable iron core 124b. Of course, the movement forms here can also be reversed, that is, the first movable iron core 124b is set to rotate, and the first push rod 124a' is set to slide linearly.

[0053] 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 in addition, the re-lock 123b2 can also be pulled to rotate).

[0054] In this embodiment, the second release 125 is a magnetic flux release, and 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).

[0055] 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, actuate after receiving the trip signal, and will not reset naturally (self-reset), and can only be reset under the action of external force.

[0056] Here, the second actuator 125a is a second push rod 125a', and the second push rod 125' is linked with the second moving iron core 125b in the magnetic flux release (hereinafter referred to as the second moving iron core 125b for distinction), that is, after the second release 125 is energized, the internal second moving iron core 125b moves to make the second push rod 125' move, thereby making the second release 123b2 move. Here, the movement form of the second push rod 125' and the second moving iron core 125b can be the same, for example, both are linearly sliding or rotating, and when the second moving iron core 125b moves, the second push rod 125' will also move synchronously.

[0057] Of course, the movement forms of the second push rod 125' and the second moving iron core 125b can also be different. For example, the second moving iron core 125b is set to slide linearly, and the second push rod 125' is set to rotate, and a linkage is formed between the two (there are many linkage methods, such as abutment, hinge, etc.). When actuated, the sliding of the second moving iron core 125b is converted into the rotation of the second push rod 125'; when reset, the rotation of the second push rod 125' is converted into the sliding of the second moving iron core 125b. Of course, the movement forms here can also be reversed, that is, the second moving iron core 125b is set to rotate, and the second push rod 125' is set to slide linearly.

[0058] 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 in addition, the re-lock 123b2 can also be pulled to rotate).

[0059] Regardless of which of the above-mentioned releasers is used, once actuated, the first actuating member 124a and / or the second actuating member 125a will remain in the actuating position F1. At 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 releasers is not reset, the operating mechanism 123 cannot be closed again.

[0060] For the first release 124, the reset of its first actuator 124a is associated with the operating mechanism 123, and specifically, the lever 123c of the operating mechanism 123 has a reset portion 123c1. During the re-locking operation of the operating mechanism 123, the reset portion 123c1 can push the first actuator 124a of the first release 124 to return to the reset position F2. For this reset mode, after the disconnector 100 is installed in the chassis 201 of the inverter, only the knob 122 is exposed outside the chassis 201, so the user can restore the first actuator 124a of the first release 124 to the reset position F2 by operating the knob 122 outside the chassis 201.

[0061] As for the second release 125, its reset needs to rely on the reset button 126. The reset button 126 here is set on the housing 121, and at least a part of it is exposed outside the housing 121. The reset button 126 here is movably set with the housing 121. The so-called movably set means that it can be offset or deflected relative to the housing 121, that is, it can be rotated relative to the housing 121 or slid along a straight line. After the isolating switch 100 is installed in the inverter, the housing 121 is inside the inverter, so the reset button 126 can only be operated by opening the chassis 201 of the inverter.

[0062] With the above-mentioned structural setting, especially when the inverter has some serious faults, 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.

[0063] The reset button 126 and the second actuating member 125a of the second release 125 may move in various forms, such as sliding along a straight line or rotating.

[0064] As an implementation method, Figure 1-12As 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 an integral part, so the two can achieve synchronous movement. Of course, in addition to this, the reset button 126 and the second actuator 125a of the second release 125 can also be two independently formed parts, and the two are fixed together by screw fastening, interference fit, plug-in, riveting, etc. to achieve synchronous movement.

[0065] As a variation of this embodiment, the reset button 126 and the second release 125 can also be rotatably arranged. The reset button 126 and the second actuating member 125a of the second release 125 are an integral part; or, the reset button 126 and the second actuating member 125a of the second release 125 are two independent parts, which are fixed together by screw fastening, interference fit, plug-in connection, riveting, etc. to achieve synchronous movement.

[0066] As another embodiment, Fig.15 As shown, the movement form of the reset button 126 is rotation, and the movement form of the second actuator 125a of the second release 125 is sliding along a straight line. The reset button 126 and the second actuator 125a of the second release 125 are arranged in linkage. Here, the reset button 126 and the second actuator 125a of the second release 125 are equivalent to forming a crank slider machine. When the second actuator 125a of the second release 125 slides, the reset button 126 can be driven to rotate; when the reset button 126 rotates, the second actuator 125a of the second release 125 can also be driven to slide.

[0067] In this manner, since the movement of the reset button 126 is rotation, the space occupied is relatively small, which is a more ideal choice in some situations where the structural space or the operating space is limited.

[0068] As a variation of this method, the movement form of the second actuating member 125a of the second release 125 can also be set to rotate, and the movement form of the reset button 126 can be set to slide along a straight line, and the two form a linkage. In this way, when the second actuating member 125a of the second release 125 rotates, it can drive the reset button 126 to slide; when the reset button 126 slides, it can also drive the second actuating member 125a of the second release 125 to rotate.

[0069] As another embodiment, Figure 16-17As shown, the reset button 126 and the second actuating member 125a of the second release 125 have the same movement form, and the reset button 126 and the second actuating member 125a of the second release 125 do not move completely synchronously, and the second actuating member 125a is located on one side of the reset button 126. In this way, a reset spring 127 is also provided, and each time the reset button 126 resets the first actuating member 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, and after the external force disappears, the reset spring 127 will drive the reset button 126 to return to the first position F3.

[0070] As a modified implementation of this manner, the movement forms of the reset button 126 and the second actuating member 125a of the second release 125 may also be set to rotation.

[0071] The reset button 126 with the reset spring 127 can ensure that the reset button 126 is in the same position after each movement.

[0072] 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 way, the shell 121 is 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.

[0073] Inside the housing 121, there are a release chamber 121b and an operating mechanism chamber 121a, and the release chamber 121b is located on one side of the operating mechanism chamber 121a. The operating mechanism 123 is arranged in the operating mechanism chamber 121a, and the first and second releases 124 and 125 are arranged in the release chamber 121b. In this way, all releases are arranged in one release chamber 121b, which is conducive to a more compact overall structure and also facilitates the installation of the release.

[0074] For this housing 121, it includes a base 1210, a cover 1212 and a mounting plate 1211. The side wall of the base 1210 has a notch 1213, and the mounting plate 1211 is adapted to the notch 1213, and the mounting plate 1211 is detachably fixed to the base 1210. The detachable fixing here specifically adopts screw fastening, and of course, it can also be replaced by buckle fixing, buckle and screw fastening, etc.

[0075] 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 by screws. In addition, riveting, buckle fixing, etc. can also be used.

[0076] In the case of the mounting plate 1211, the reset button 126 is movably arranged on the mounting plate 1211. As for the second release 125, it can be directly placed into 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 second release 125 extends from the notch 1213 into the base 1210.

[0077] In this embodiment, screws are used to fix the second release 125 on the mounting plate 1211. Such a structure can form a small module between the second release 125 and the mounting plate 1211, which is beneficial to the design and assembly of the product, and is more beneficial to the replacement and maintenance of the damaged second release 125. Of course, the fastening method here is not limited to screws, and methods such as clamping and plugging can also be used.

[0078] 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.

[0079] The first release 124 and the second release 125 both receive signals through their respective interfaces 128. Figure 6-8As shown, in this embodiment, the interface 128 includes a connector 128a and a circuit board 128b, the connector 128a is welded to the circuit board 128b, the first and second releases 124 and 125 are connected to the circuit board 128b through leads, and the first and second releases 124 and 125 use different pins of the same connector 128a. Of course, in addition to this, the first and second releases 124 and 125 can also each have an independent connector 128a. Alternatively, the circuit board 128b is omitted, the interface 128 is the connector 128a, and the first and second releases 124 and 125 are connected to the connector 128a through leads.

[0080] For this type of 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.

[0081] In this embodiment, the interface 128 is fixed on the mounting plate 1211. This way, the releaser and its accessories (interface 128, lead wires) are all located on the mounting plate 1211, forming a small module with the mounting plate 1211, which is conducive to the assembly of the releaser and the replacement and maintenance after damage. Of course, the fastening method here is not limited to screws, for example, snap-on, plug-in, etc. can also be used.

[0082] 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 installing the interface 128 on the mounting plate 1211, and then using a covering member 1214 to limit the interface 128.

[0083] In this embodiment, a mounting groove 1211a and a wiring groove 1211b are provided on the mounting plate 1211, the mounting groove 1211a is connected with the wiring groove 1211b, the interface 128 (connector 128a and circuit board 128b) is in the mounting groove 1211a, and the leads of the first release 124 and the second release 125 are connected with the circuit board 128b through the wiring groove 1211b. The shielding member 1214 is detachably fixed to the mounting plate 1211, and the mounting groove 1211a and the wiring groove 1211b are closed, so as to shield the leads in the wiring groove 1211b and restrict the interface 128 from being separated from the mounting groove 1211a. Here, the shielding member 1214 and the mounting plate 1211 are fixed by screws. In addition to screws, snap-fit ​​fixation, interference fit and the like can also be used, as long as the shielding member 1214 and the mounting plate 1211 can be detachably fixed.

[0084] For the reset button 126, in order to facilitate the user to know the function or reset direction of the reset button 126, a reset mark RE is provided on the reset button 126. In this embodiment, the reset mark RE is a combination of a graphic and text, the graphic indicates the direction (the graphic may be an arrow, a triangle mark, a gesture, etc., indicating the direction), and the text may be Chinese or letters. Of course, in addition to this, the reset mark RE may also be only a graphic or text.

[0085] In addition, the reset mark RE may also be disposed on the housing 121 , as long as it is disposed close to the reset button 126 .

[0086] Here, as a more intuitive display method, the reset mark RE is on the reset button 126, and the reset button 126 and the second actuating member 125a of the second release 125 are set for synchronous movement. In the case of such synchronous movement, the reset mark RE of the reset button 126 is exposed from the housing 121 after the second actuating member 125a of the second release 125 is actuated; when the second actuating member 125a of the second release 125 is reset, the reset mark RE is hidden in the housing 121.

[0087] For the reset button 126, in order to facilitate the user to know that the reset button here is for the tripper, there is a tripper mark TP on the reset button 126. In this embodiment, the tripper mark TP here is text, and the text can be Chinese or letters. Of course, in addition to this, the reset mark RE can also be a graphic.

[0088] In addition, the release mark TP can also be set on the housing 121, as long as it is set close to the reset button 126.

[0089] Here, as a more intuitive display method, the tripper mark TP is on the reset button 126, and the reset button 126 and the second actuator 125a of the second tripper 125 are set for synchronous movement. In the case of such synchronous movement, the tripper mark TP of the reset button 126 is hidden in the housing 121 after the second actuator 125a of the second tripper 125 is actuated; when the second actuator 125a of the second tripper 125 is reset, the tripper mark TP is exposed on the housing 121.

[0090] 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.

[0091] As the above-mentioned isolating switch 100, it can be used in a power conversion device 200, such as an inverter. Fig.18 As shown, the 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 through the interface 128. If a fault occurs in the line, the control unit 202 detects the occurrence of the fault, and the control unit 202 can send a trip signal to the first release 124 and the second release 125 to achieve the tripping of the isolating switch 100.

[0092] There are many ways to send signals here, one of which is: when a general fault occurs, a trip signal is sent to the first release 124; when a serious fault occurs, a trip signal is sent to the second release 125. Another way is: when a general fault occurs, a trip signal is sent to the first release 124; when a serious fault occurs, a trip signal is sent to both the first release 124 and the second release 125.

[0093] No matter which method is used, when a serious fault occurs, the second release 125 will receive the trip signal and be actuated, and the operating mechanism 123 will trip. After the trip, the user must open the chassis 201 to operate in order to reset the second release 125 and close the operating mechanism 123 again, which effectively avoids misoperation and is safer and more reliable to use.

[0094] As the above-mentioned isolating switch 100, it can be applied in a power supply system, such as Fig.19As 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 in the power conversion device 200, and only the knob 122 is exposed. The control unit 202 is a controller independent of the power conversion device 200. The control unit 202 is electrically connected to the first release 124 and the second release 125 through the adapter component (which can be a circuit board or an adapter interface) on the power conversion device 200. For example, if a fault occurs in the line, the control unit 202 detects the occurrence of the fault, and the control unit 202 can send a tripping signal to the first release 124 and the second release 125 to achieve the tripping of the isolating switch 100.

[0095] The method of sending signals here can refer to the structure in the above-mentioned inverter, which will not be repeated here.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0097] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary 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 under the action of 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 be connected 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 in the closed state, the lock assembly is in a locked state and keeps the energy storage mechanism in the energy storage state; The actuator of the first release and the actuator of the second release both correspond to the lock assembly, and the actuator of the first release and the actuator of the second release both include an actuating position and a reset position; after receiving a signal, the actuator of any release 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 release is in the actuating position, the lock assembly is blocked so that it cannot be restored to the locked state; when the actuators of all releases are in the reset position, the obstruction to the lock assembly is released; The resetting of the actuator of the first release is associated with the operating mechanism. After the first release is actuated, the user operates the operating mechanism after the tripping to realize the restoration of the actuator of the first release 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 comprises a second surface, and the contact unit is arranged on the second surface; the reset key 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 comprises a base and a mounting plate, the side wall of the base has a notch, the mounting plate fits the notch, the mounting plate and the base are detachably fixed to fill the notch, and the reset button is movably arranged on the mounting plate; The second release or all releases are fixed on the mounting plate and then mounted 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.

5. The isolating switch according to claim 4, characterized in that: It also includes an interface, and 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 actuating member of the second release are arranged to move synchronously, and the actuating member of the second release moves in the form of rotation or sliding along a straight line; Or, the reset button and the actuator of the second release are arranged in linkage, the motion form of the actuator of the second release is sliding along a straight line, and the motion form 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 in a sliding manner.

9. The isolating switch according to claim 1, characterized in that: It also includes a reset spring, and the reset key includes a first position and a second position; the reset key 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 key and the actuator of the second release form abutment when the reset key moves from the first position to the second position, so that the reset key drives the actuator of the second release to reset; the reset spring is connected to the reset key and provides a restoring force for the reset key to move to the second position, and the reset key releases the abutment relationship with the actuator of the second release when it moves to the second position.

10. A power conversion device, characterized in that: A chassis, a control unit, and an isolating switch as claimed in 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 with the first release and the second release through the power conversion device, and is used to send a tripping signal to the first release and / or the second release when a line fault occurs.

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