Mechanical interlocking device, fusion switch and energy storage system

Abstract

The utility model relates to the technical field of energy storage equipment, and particularly discloses a mechanical interlocking device, a fusion switch and an energy storage system, and the mechanical interlocking device comprises a housing and an operation interlocking plate disposed in the housing. The shell is provided with an operation surface provided with a pre-operation hole and a main operation hole, and the operation surface is located on one side of the operation interlocking plate and is parallel to the plane where the operation interlocking plate is located; a main loop turntable and a pre-charging loop turntable are arranged on the other side of the plane where the operation interlocking plate is located; the rotating axis of the main loop rotating disc coincides with the central axis of the main operation hole, and the rotating axis of the pre-charging loop rotating disc coincides with the central axis of the pre-operation hole. The operation surface is provided with a sliding groove, and the operation interlocking plate is provided with a pre-opening port and a main opening port. According to the application, manual safe operation of the pre-charging loop and the main loop of the fusion switch can be realized, and the safety and reliability of the operation process are improved.

Description

Technical Field

[0001] This application relates to the technical field of energy storage devices, and in particular, to a mechanical interlock device, a fused switch, and an energy storage system. Background Art

[0002] In energy storage systems such as battery cabinets and power generation sides, a fused switch is usually used to control the on-off of the circuit. Currently, there is usually only a single-motor operating mechanism on the fused switch to remotely control the opening and closing of the switch unit. The single-motor has a limited lifespan. Once the motor fails, the entire fused switch cannot work. When the staff needs to maintain and debug the energy storage system, the prior art lacks a mechanical interlock device to limit the manual debugging procedure, which is likely to cause errors in the opening and closing operation procedures of the pre-charge circuit and the main circuit, thus posing a safety hazard during manual debugging. Summary of the Utility Model

[0003] The purpose of this application is to provide a mechanical interlock device, a fused switch, and an energy storage system, which can achieve manual safe operation of the pre-charge circuit and the main circuit of the fused switch, and improve the safety and reliability of the operation process.

[0004] The embodiments of this application are implemented as follows:

[0005] In a first aspect, an embodiment of this application provides a mechanical interlock device configured on a fused switch. The mechanical interlock device includes a housing and an operation interlock plate disposed inside the housing. The housing has an operation surface with a pre-operation hole and a main-operation hole opened thereon. The operation surface is located on one side of the operation interlock plate and is parallel to the plane where the operation interlock plate is located. On the other side of the plane where the operation interlock plate is located, a main-circuit turntable and a pre-charge-circuit turntable are provided. The rotation axis of the main-circuit turntable coincides with the central axis of the main-operation hole, and the rotation axis of the pre-charge-circuit turntable coincides with the central axis of the pre-operation hole. A sliding groove is opened on the operation surface, and a pre-opening and a main-opening are opened on the operation interlock plate. When the operation interlock plate is driven to slide to the first end of the sliding groove, the pre-opening communicates the pre-operation hole with the pre-charge-circuit turntable to form a first operation channel for driving the pre-charge-circuit turntable to rotate for opening and closing. When the operation interlock plate is driven to slide to the middle of the sliding groove, the operation interlock plate blocks both the pre-operation hole and the main-operation hole at the same time. When the operation interlock plate is driven to slide to the second end of the sliding groove, the main-opening communicates the main-operation hole with the main-circuit turntable to form a second operation channel for operating the main-circuit turntable to rotate for opening and closing.

[0006] As an alternative embodiment, it further includes a pre-charge lock and a main lock provided on the operation interlock plate; when the pre-charge circuit turntable is in the off position through the first operation channel, the pre-charge lock can form a resisting force that blocks the operation interlock plate from moving towards the main operation hole; or, when the main circuit turntable is in the off position through the second operation channel, the main lock can form a resisting force that blocks the operation interlock plate from moving towards the pre-operation hole.

[0007] As an alternative embodiment, two rotating shafts and two lock plate blocking columns are provided on the operation interlock plate; the extending directions of the rotating shafts and the lock plate blocking columns are both perpendicular to the operation surface; the pre-charge lock and the main lock are respectively rotatably sleeved on two corresponding rotating shafts, and spring elements are respectively connected to the pre-charge lock and the main lock, and the spring elements can form acting forces that make the pre-charge lock and the main lock respectively abut against the two lock plate blocking columns.

[0008] As an alternative embodiment, a first pre-charge limit rod with an extending direction perpendicular to the operation surface is provided on the pre-charge circuit turntable; when the pre-charge circuit turntable is in the off position, the first pre-charge limit rod contacts the side of the pre-charge lock away from the lock plate blocking column, forming a resisting force that blocks the operation interlock plate from moving towards the main operation hole; a main limit rod with an extending direction perpendicular to the operation surface is provided on the main circuit turntable; when the main circuit turntable is in the off position, the main limit rod contacts the side of the main lock away from the lock plate blocking column, forming a resisting force that blocks the operation interlock plate from moving towards the pre-operation hole.

[0009] As an alternative embodiment, it further includes an unlocking member; an unlocking groove with an extending direction perpendicular to and intersecting the extending direction of the sliding groove is formed on the operation interlock plate; an unlocking slide is provided on the unlocking member and is slidably connected to the unlocking groove; a guiding track is provided on the operation surface, and a guiding column with an extending direction perpendicular to the operation surface is provided on the unlocking slide, and the guiding column can drive the unlocking member to move along the path of the guiding track when driven.

[0010] As an alternative embodiment, the guiding track includes two sliding channels opened on the operation surface and parallel to the sliding groove, and a first connecting groove and a second connecting groove opened on the operation surface; the first connecting groove communicates with the ends of the two sliding channels close to the first end of the sliding groove, and the second connecting groove communicates with the middle parts of the two sliding channels.

[0011] As an alternative embodiment, a second pre-charge limit rod is provided on the pre-charge circuit turntable; when the pre-charge circuit turntable is in the off position, an unlocking member blocking platform that can abut against the second pre-charge limit rod is provided on the unlocking member, so as to form an acting force for the unlocking member to move towards the main operation hole side.

[0012] As an alternative implementation, a pre-pushing arc surface and a main-pushing arc surface are provided on the unlocking member; a first guiding arc surface that slidably fits with the pre-pushing arc surface is provided on the pre-charging locking member, and a second guiding arc surface that slidably fits with the main-pushing arc surface is provided on the main locking member; the unlocking slide is driven to move closer to the sliding groove on the unlocking groove, and a force is formed between the pre-pushing arc surface and the first guiding arc surface to push the pre-charging locking member to move away from the pre-charging circuit turntable on the rotating shaft, so that the first pre-charging limiting rod and the pre-charging locking member can be misaligned and separated in the extending direction of the first pre-charging limiting rod; a force is formed between the main-pushing arc surface and the second guiding arc surface to push the main locking member to move away from the main circuit turntable on the rotating shaft, so that the main limiting rod and the main locking member can be misaligned and separated in the extending direction of the main limiting rod; an elastic element sleeved on the rotating shaft is compressed to generate an elastic force acting on the pre-charging locking member and the main locking member in the axial direction.

[0013] In a second aspect, an embodiment of the present application provides a fusion switch, including a pre-charging switch unit, a main switch unit, and the mechanical interlocking device described above; wherein, the main circuit turntable is linked with the main switch unit to perform manual opening and closing operations of the main switch unit; the pre-charging circuit turntable is linked with the pre-charging switch unit to perform manual opening and closing operations of the pre-charging switch unit.

[0014] In a third aspect, an embodiment of the present application further provides an energy storage system, including a battery energy storage module and the fusion switch described above; the fusion switch can control the on-off of the circuit of the battery energy storage module through the mechanical interlocking device.

[0015] The beneficial effects of the embodiments of the present application include:

[0016] The mechanical interlock device provided by the embodiment of the present application includes a housing and an operation interlock plate disposed inside the housing; the housing has an operation surface with a pre-operation hole and a main operation hole opened thereon, the operation surface is located on one side of the operation interlock plate and is parallel to the plane where the operation interlock plate is located; on the other side of the plane where the operation interlock plate of the embodiment of the present application is located, a main circuit turntable and a pre-charge circuit turntable are provided; the rotation axis of the main circuit turntable coincides with the central axis of the main operation hole, and the rotation axis of the pre-charge circuit turntable coincides with the central axis of the pre-operation hole; a sliding groove is opened on the operation surface, and a pre-opening and a main opening are opened on the operation interlock plate; when the operation interlock plate is driven to slide to the first end of the sliding groove, the pre-opening communicates the pre-operation hole with the pre-charge circuit turntable to form a first operation channel for driving the pre-charge circuit turntable to rotate for closing and opening; when the operation interlock plate is driven to slide to the middle of the sliding groove, the operation interlock plate simultaneously blocks the pre-operation hole and the main operation hole; when the operation interlock plate is driven to slide to the second end of the sliding groove, the main opening communicates the main operation hole with the main circuit turntable to form a second operation channel for operating the main circuit turntable to rotate for closing and opening. In the embodiment of the present application, the first operation channel and the second operation channel can be separately formed by the operation interlock plate being in different positions. When the operation interlock plate is in the middle, both the first operation channel and the second operation channel are blocked and manual operation cannot be performed. The present application can improve the safety during the manual operation through the sliding setting of the operation interlock plate.

[0017] The fusion switch provided by the embodiment of the present application includes a pre-charge switch unit, a main switch unit, and the above-mentioned mechanical interlock device; wherein, the main circuit turntable is linked with the main switch unit to perform the manual closing and opening operations of the main switch unit; the pre-charge circuit turntable is linked with the pre-charge switch unit to perform the manual closing and opening operations of the pre-charge switch unit. When the first operation channel is connected, the staff can use an external tool to rotate the pre-charge circuit turntable to realize the control of the closing and opening operations of the pre-charge switch unit. When the second operation channel is connected, the staff can also rotate the main circuit turntable to realize the control of the closing and opening of the main switch unit.

[0018] The energy storage system further provided by the embodiment of the present application includes a battery energy storage module and the above-mentioned fusion switch; the fusion switch can control the on-off of the circuit of the battery energy storage module through the mechanical interlock device. The embodiment of the present application can realize the manual safe operation of the pre-charge circuit and the main circuit of the fusion switch through the above-mentioned mechanical interlock device, and improve the safety and reliability of the operation process. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 One of the schematic structural diagrams of the mechanical interlocking device according to the embodiment of the present application;

[0021] Figure 2 Another schematic structural diagram of the mechanical interlocking device according to the embodiment of the present application;

[0022] Figure 3 Another schematic structural diagram of the mechanical interlocking device according to the embodiment of the present application;

[0023] Figure 4 Another schematic structural diagram of the mechanical interlocking device according to the embodiment of the present application;

[0024] Figure 5 Another schematic structural diagram of the mechanical interlocking device according to the embodiment of the present application;

[0025] Figure 6 Another schematic structural diagram of the mechanical interlocking device according to the embodiment of the present application;

[0026] Figure 7 Schematic diagram of the main circuit turntable and the precharge circuit turntable in the off state according to the embodiment of the present application;

[0027] Figure 8 Schematic diagram of the first operation channel being connected according to the embodiment of the present application;

[0028] Figure 9 Schematic diagram of the precharge circuit turntable in the on state according to the embodiment of the present application;

[0029] Figure 10 Schematic diagram of the precharge circuit turntable in the off state according to the embodiment of the present application;

[0030] Figure 11 Schematic diagram of the precharge circuit turntable in the on state and the second operation channel being connected according to the embodiment of the present application;

[0031] Figure 12 Schematic diagram of the main circuit turntable in the on state according to the embodiment of the present application;

[0032] Figure 13 Schematic diagram of the main circuit turntable in the off state according to the embodiment of the present application;

[0033] Figure 14 Schematic diagram of the main circuit turntable and the precharge circuit turntable in the on state according to the embodiment of the present application;

[0034] Figure 15 Schematic diagram of the main circuit turntable in the on state and the precharge circuit turntable in the off state according to the embodiment of the present application;

[0035] Figure 16 Schematic diagram of the state of the unlocking member pushing the precharge locking member and the main locking member according to the embodiment of the present application Figure One ;

[0036] Figure 17 Schematic diagram of the state where the unlocking member of the embodiment of the present application pushes the pre-charging locking member and the main locking member Figure Two ;

[0037] Figure 18 Schematic diagram of the unlocking member sliding downward after spatial dislocation in the embodiment of the present application;

[0038] Figure 19 Schematic diagram of the closing of the main circuit turntable in the embodiment of the present application;

[0039] Figure 20 Schematic diagram of the structure of the fusion switch in the embodiment of the present application.

[0040] Icon:

[0041] 100 - Mechanical interlock device; 101 - Housing; 102 - Operating interlock plate; 103 - Pre-operation hole; 104 - Main operation hole; 105 - Operating surface; 106 - Main circuit turntable; 107 - Pre-charging circuit turntable; 108 - Sliding groove; 109 - Pre-opening; 110 - Main opening; 111 - First end; 112 - Second end; 113 - Pre-charging locking member; 114 - Main locking member; 115 - Rotating shaft; 116 - Lock plate blocking column; 117 - First pre-charging limit rod; 118 - Main limit rod; 119 - Unlocking member; 120 - Unlocking groove; 121 - Unlocking slide; 122 - Guide track; 123 - Guide post; 124 - Slideway; 125 - First communication groove; 126 - Second communication groove; 127 - Second pre-charging limit rod; 128 - Unlocking member blocking platform; 129 - Pre-pushing arc surface; 130 - Main pushing arc surface; 131 - First guiding arc surface; 132 - Second guiding arc surface; 133 - First operation channel; 134 - Second operation channel; 135 - Pre-charging switch unit; 136 - Main switch unit. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0045] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0046] Generally, in energy storage systems such as battery cabinets and the power generation side, a combined switch is usually used to achieve circuit on-off control. Currently, there is usually only a single-motor operating mechanism on the combined switch for remote opening and closing control of the switch unit. When maintenance and debugging of the energy storage system are required by the staff, it is impossible to achieve opening and closing control debugging of the switch unit through manual operation. In addition, during manual operation debugging, safety problems are usually caused due to errors in the pre-charge circuit and the main circuit operation procedures.

[0047] To solve the above technical problems, an embodiment of the present application provides a mechanical interlock device 100, a combined switch, and an energy storage system.

[0048] Referring to Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present application provides a mechanical interlock device 100 configured on a combined switch. The mechanical interlock device 100 includes a housing 101 and an operation interlock plate 102 disposed inside the housing 101; the housing 101 has an operation surface 105 provided with a pre-operation hole 103 and a main-operation hole 104. The operation surface 105 is located on one side of the operation interlock plate 102 and is parallel to the plane where the operation interlock plate 102 is located; on the other side of the plane where the operation interlock plate 102 is located, a main-circuit turntable 106 and a pre-charge-circuit turntable 107 are provided; the rotation axis of the main-circuit turntable 106 coincides with the central axis of the main-operation hole 104, and the rotation axis of the pre-charge-circuit turntable 107 coincides with the central axis of the pre-operation hole 103; a sliding groove 108 is provided on the operation surface 105, and a pre-opening 109 and a main-opening 110 are provided on the operation interlock plate 102; when the operation interlock plate 102 is driven to slide to the first end 111 of the sliding groove 108, the pre-opening 109 communicates the pre-operation hole 103 with the pre-charge-circuit turntable 107 to form a first operation channel 133 for driving the pre-charge-circuit turntable 107 to rotate for opening and closing, as Figure 8 、Figure 9 As shown; the operation interlock plate 102 is driven to slide to the middle of the sliding groove 108, and the operation interlock plate 102 blocks the pre-operation hole 103 and the main operation hole 104 at the same time; the operation interlock plate 102 is driven to slide to the second end 112 of the sliding groove 108, and the main opening 110 connects the main operation hole 104 and the main circuit turntable 106 to form a second operation channel 134 for operating the rotation of the main circuit turntable 106 to close and open, such as Figure 11 、 Figure 12 shown.

[0049] It should be noted that when the first operation channel 133 is formed, the operation interlock plate 102 blocks the main operation hole 104, so that the second operation channel 134 cannot be connected. When the second operation channel 134 is formed, the operation interlock plate 102 blocks the pre-operation hole 103, so that the first operation channel 133 cannot be connected. This enables the staff to only operate one of the pre-charging switch unit 135 and the main switch unit 136 at a certain position.

[0050] It should be noted that a guiding slider is provided on the operation interlock plate 102 provided in the embodiment of the present application, and the guiding slider can linearly move on the sliding groove 108, so that the operation interlock plate 102 can realize linear movement. When the operation interlock plate 102 moves to the middle of the sliding groove 108, both the first operation channel 133 and the second operation channel 134 cannot be connected, realizing safety protection.

[0051] The mechanical interlock device 100 provided by the embodiment of the present application includes a housing 101 and an operation interlock plate 102 disposed within the housing 101; the housing 101 has an operation surface 105 provided with a pre-operation hole 103 and a main operation hole 104, and the operation surface 105 is located on one side of the operation interlock plate 102 and parallel to the plane where the operation interlock plate 102 is located; on the other side of the plane where the operation interlock plate 102 of the embodiment of the present application is located, a main circuit turntable 106 and a pre-charge circuit turntable 107 are provided; the rotation axis of the main circuit turntable 106 coincides with the central axis of the main operation hole 104, and the rotation axis of the pre-charge circuit turntable 107 coincides with the central axis of the pre-operation hole 103; a sliding groove 108 is provided on the operation surface 105, and a pre-opening 109 and a main opening 110 are provided on the operation interlock plate 102; when the operation interlock plate 102 is driven to slide to the first end 111 of the sliding groove 108, the pre-opening 109 communicates the pre-operation hole 103 with the pre-charge circuit turntable 107 to form a first operation channel 133 for driving the pre-charge circuit turntable 107 to rotate for closing and opening; when the operation interlock plate 102 is driven to slide to the middle of the sliding groove 108, the operation interlock plate 102 blocks the pre-operation hole 103 and the main operation hole 104 at the same time; when the operation interlock plate 102 is driven to slide to the second end 112 of the sliding groove 108, the main opening 110 communicates the main operation hole 104 with the main circuit turntable 106 to form a second operation channel 134 for operating the main circuit turntable 106 to rotate for closing and opening. In the embodiment of the present application, the first operation channel 133 and the second operation channel 134 can be separately formed by the operation interlock plate 102 being located at different positions. When the operation interlock plate 102 is in the middle, both the first operation channel 133 and the second operation channel 134 are blocked and manual operation cannot be performed. The present application can improve the safety during the manual operation through the sliding setting of the operation interlock plate 102.

[0052] Referring to Figure 4 , Figure 6 As shown, as an optional implementation manner, it further includes a pre-charge lock 113 and a main lock 114 provided on the operation interlock plate 102; when the pre-charge circuit turntable 107 is in the open position through the first operation channel 133, the pre-charge lock 113 can form a resisting force to block the movement of the operation interlock plate 102 towards the main operation hole 104; or, when the main circuit turntable 106 is in the open position through the second operation channel 134, the main lock 114 can form a resisting force to block the movement of the operation interlock plate 102 towards the pre-operation hole 103.

[0053] It should be noted that the preset operation process of the mechanical interlock device 100 provided by the embodiment of the present application is as follows: the pre-charge circuit turntable 107 drives the pre-charge switch unit 135 to close, the main circuit turntable 106 drives the main switch unit 136 to close, the pre-charge circuit turntable 107 drives the pre-charge switch unit 135 to open, and the main circuit turntable 106 drives the main switch unit 136 to open.

[0054] When the first operation channel 133 is formed and the pre-charge circuit turntable 107 is rotated to the closing position, the operation interlock plate 102 can move closer to the main circuit turntable 106, causing the first operation channel 133 to disconnect and the second operation channel 134 to be connected. At this time, the operator can rotate the main circuit turntable 106 to the closing position.

[0055] Among them, if the pre-charge circuit turntable 107 closes and then opens, the pre-charge lock 113 can block the operation interlock plate 102 from moving towards the main circuit turntable 106, preventing the switch to the second operation channel 134. Only when the pre-charge circuit turntable 107 is in the closing position, the operation interlock plate 102 will not be limited and blocked, realizing sequential switching operation. Similarly, if the main circuit turntable 106 closes and then opens, the main lock 114 can block the operation interlock plate 102 from moving towards the pre-charge circuit turntable 107, preventing the switch to the first operation channel 133. Only when the main circuit turntable 106 is in the closing position, the operation interlock plate 102 will not be limited and blocked, realizing sequential switching operation.

[0056] Through the above settings, it can ensure the sequential execution of pre-charge closing - main circuit closing - pre-charge opening. It can effectively prevent misoperation and improve the safety and reliability of the manual operation process.

[0057] Refer to Figure 4 As shown, further, two rotating shafts 115 and two lock plate blocking columns 116 are provided on the operation interlock plate 102. The extending directions of the rotating shafts 115 and the lock plate blocking columns 116 are both perpendicular to the operation surface 105; the pre-charge lock 113 and the main lock 114 are respectively rotatably sleeved on two corresponding rotating shafts 115, and spring elements are respectively connected to the pre-charge lock 113 and the main lock 114. The spring elements can form acting forces that make the pre-charge lock 113 and the main lock 114 respectively abut against the two lock plate blocking columns 116.

[0058] It should be noted that the pre-charge lock 113 and the main lock 114 can respectively rotate on the rotating shaft 115 and can move axially along the rotating shaft 115 under drive.

[0059] In the embodiment of the present application, the spring elements can make the pre-charge lock 113 and the main lock 114 respectively have elastic reset forces that abut against the lock plate blocking columns 116.

[0060] Refer to Figure 6As shown, a first pre-charge limit rod 117 with an extending direction perpendicular to the operation surface 105 is provided on the pre-charge circuit turntable 107. When the pre-charge circuit turntable 107 is in the open position, the first pre-charge limit rod 117 contacts the side of the pre-charge lock 113 away from the lock plate blocking column 116, forming a resisting force that blocks the operation interlocking plate 102 from moving towards the main operation hole 104; a main limit rod 118 with an extending direction perpendicular to the operation surface 105 is provided on the main circuit turntable 106. When the main circuit turntable 106 is in the open position, the main limit rod 118 contacts the side of the main lock 114 away from the lock plate blocking column 116, forming a resisting force that blocks the operation interlocking plate 102 from moving towards the pre-operation hole 103.

[0061] Referring to Figure 4 and Figure 5 As shown, as an optional embodiment, it further includes an unlocking member 119; an unlocking groove 120 with an extending direction perpendicular to and intersecting the extending direction of the sliding groove 108 is formed on the operation interlocking plate 102; an unlocking slide 121 slidably connected to the unlocking groove 120 is provided on the unlocking member 119; a guiding track 122 is provided on the operation surface 105, a guiding post 123 with an extending direction perpendicular to the operation surface 105 is provided on the unlocking slide 121, and the guiding post 123 can be driven to drive the unlocking member 119 to move along the path of the guiding track 122.

[0062] In the embodiment of the present application, the provided unlocking member 119 can move horizontally on the operation interlocking plate 102 through the unlocking groove 120 and can also move along its path on the provided guiding track 122, so that various state switching adjustments can be realized between the operation interlocking plate 102 and the unlocking member 119.

[0063] Among them, the guiding track 122 includes two sliding tracks 124 opened on the operation surface 105 and parallel to the sliding groove 108, as well as a first connecting groove 125 and a second connecting groove 126 opened on the operation surface 105; the first connecting groove 125 connects the ends of the two sliding tracks 124 close to the first end 111 of the sliding groove 108, and the second connecting groove 126 connects the middle parts of the two sliding tracks 124.

[0064] It should be noted that the second connecting groove 126 and the two sliding tracks 124 form a "T" - shaped structure, and the upper end of the "T" - shaped structure is arranged away from the sliding groove 108.

[0065] Among them, a second pre-charge limit rod 127 is provided on the pre-charge circuit turntable 107; when the pre-charge circuit turntable 107 is in the open position, an unlocking member blocking platform 128 that can abut against the second pre-charge limit rod 127 is provided on the unlocking member 119, so as to form a force for the unlocking member 119 to move towards the main operation hole 104 side.

[0066] Referring to Figure 4 and Figure 5As shown, as an optional implementation, a pre-push arc surface 129 and a main-push arc surface 130 are provided on the unlocking member 119; a first guiding arc surface 131 that slidably fits with the pre-push arc surface 129 is provided on the pre-charging locking member 113, and a second guiding arc surface 132 that slidably fits with the main-push arc surface 130 is provided on the main locking member 114; the unlocking slide 121 is driven to move closer to the sliding groove 108 on the unlocking groove 120, and a force is formed between the pre-push arc surface 129 and the first guiding arc surface 131 to push the pre-charging locking member 113 to move away from the pre-charging circuit turntable 107 on the rotating shaft 115, so that the first pre-charging limiting rod 117 and the pre-charging locking member 113 can be misaligned and separated in the extending direction of the first pre-charging limiting rod 117; a force is formed between the main-push arc surface 130 and the second guiding arc surface 132 to push the main locking member 114 to move away from the main circuit turntable 106 on the rotating shaft 115, so that the main limiting rod 118 and the main locking member 114 can be misaligned and separated in the extending direction of the main limiting rod 118; the elastic element sleeved on the rotating shaft 115 is compressed to generate an elastic force acting on the pre-charging locking member 113 and the main locking member 114 in the axial direction.

[0067] It should be noted that the embodiments of the present application adopt distributed operation procedures to lock each other, and can only be operated according to the operation sequence rules, otherwise the whole mechanism will be locked to avoid the debugging failure of the system caused by misoperation.

[0068] The embodiments of the present application have two operation procedures. The first operation procedure is pre-charging closing-main circuit closing-pre-charging opening; the second operation procedure is main circuit opening.

[0069] The specific operation process of the first operation procedure is as follows:

[0070] As Figure 7 shown, both the pre-charging circuit turntable 107 and the main circuit turntable 106 are in the opening position.

[0071] When the assembly composed of the operation interlocking plate 102, the unlocking member 119, the pre-charging locking member 113 and the main locking member 114 is on the sliding groove 108, since the unlocking member blocking platform 128 abuts against and interlocks with the second pre-charging limiting rod 127, the whole assembly including the unlocking member 119, the pre-charging locking member 113 and the main locking member 114 can only slide upward. At this time, the pre-charging locking member 113 is rotated and displaced by the first pre-charging limiting rod 117 on the pre-charging circuit turntable 107, as Figure 8 shown. At this time, a first operation channel 133 is formed, and the staff can operate the pre-charging circuit turntable 107 to close, specifically as Figure 9 shown. If the pre-charging circuit turntable 107 is closed and then opened, as Figure 10As shown, the first pre-charge limit rod 117 and the lock plate blocking column 116 block the pre-charge lock 113 from both sides, making it impossible to perform the downward sliding operation. Therefore, the pre-charge circuit turntable 107 must be in the closing state for the entire assembly to perform the downward sliding operation and connect the second operation channel 134. At this time, the main limit rod 118 toggles the main lock 114 to rotate and give way. Specifically, as Figure 11 shown.

[0072] In Figure 11 the state shown, the operator can operate the main circuit turntable 106 to close the main circuit and enter Figure 12 the main circuit closing state shown. If the main circuit turntable 106 is opened after closing, as Figure 13 shown, the main limit rod 118 and the lock plate blocking column 116 block the main lock 114 from both sides, making it impossible to perform the next operation in sequence. Therefore, the main circuit turntable 106 must be in the closing state to perform the next operation in sequence.

[0073] In the closing state of the main circuit turntable 106, the assembly slides upward, as Figure 14 shown. At this time, the first operation channel 133 is connected, and the operator can operate the pre-charge circuit turntable 107 to enter the opening state, as Figure 15 shown.

[0074] The specific operation process of the second operation procedure is as follows:

[0075] In Figure 15 the state, push the unlocking part 119 to the right. The main pushing arc surface 130 and the pre-pushing arc surface 129 respectively push the main lock 114 and the pre-charge lock 113, so that the main lock 114 moves upward to be misaligned and separated from the main limit rod 118; at the same time, the pre-charge lock 113 moves upward to be misaligned and separated from the first pre-charge limit rod 117. Specifically, as Figure 16 , Figure 17 shown.

[0076] After completing the vertical misalignment and separation, slide the assembly downward so that the second operation channel 134 is connected, as Figure 18 shown. The operator operates the main circuit turntable 106 to enter the opening state through the second operation channel 134 to complete the opening of the main circuit, as Figure 19 shown.

[0077] Refer to Figure 20As shown in the figure, the fusion switch provided by the embodiment of the present application includes a precharge switch unit 135, a main switch unit 136, and the above-mentioned mechanical interlock device 100. Among them, the main circuit turntable 106 is linked with the main switch unit 136 to perform the manual opening and closing operations of the main switch unit 136. The precharge circuit turntable 107 is linked with the precharge switch unit 135 to perform the manual opening and closing operations of the precharge switch unit 135. When the first operation channel 133 is connected, the staff can use an external tool to rotate the precharge circuit turntable 107 to realize the control of the opening and closing operations of the precharge switch unit. When the second operation channel 134 is connected, the staff can also rotate the main circuit turntable 106 to realize the control of the opening and closing of the main switch unit 136.

[0078] The energy storage system provided by the embodiment of the present application further includes a battery energy storage module and the above-mentioned fusion switch. The fusion switch can control the on-off of the circuit of the battery energy storage module through the mechanical interlock device 100. The embodiment of the present application can realize the manual safe operation of the precharge circuit and the main circuit of the fusion switch through the above-mentioned mechanical interlock device 100, and improve the safety and reliability of the operation process.

[0079] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mechanical interlock device configured on a fusion switch, characterized in that, The mechanical interlocking device (100) includes a housing (101) and an operation interlocking plate (102) disposed within the housing (101); the housing (101) has an operation surface (105) provided with a pre-operation hole (103) and a main operation hole (104), and the operation surface (105) is located on one side of the operation interlocking plate (102) and parallel to the plane where the operation interlocking plate (102) is located; on the other side of the plane where the operation interlocking plate (102) is located, a main circuit turntable (106) and a pre-charge circuit turntable (107) are provided; the rotation axis of the main circuit turntable (106) coincides with the central axis of the main operation hole (104), and the rotation axis of the pre-charge circuit turntable (107) coincides with the central axis of the pre-operation hole (103); a sliding groove (108) is formed on the operation surface (105), and a pre-opening (109) and a main opening (110) are formed on the operation interlocking plate (102); when the operation interlocking plate (102) is driven to slide to the first end (111) of the sliding groove (108), the pre-opening (109) communicates the pre-operation hole (103) with the pre-charge circuit turntable (107) to form a first operation channel (133) for driving the pre-charge circuit turntable (107) to rotate for opening and closing; when the operation interlocking plate (102) is driven to slide to the middle of the sliding groove (108), the operation interlocking plate (102) blocks the pre-operation hole (103) and the main operation hole (104) simultaneously; when the operation interlocking plate (102) is driven to slide to the second end (112) of the sliding groove (108), the main opening (110) communicates the main operation hole (104) with the main circuit turntable (106) to form a second operation channel (134) for operating the main circuit turntable (106) to rotate for opening and closing.

2. The mechanical interlocking device according to claim 1, characterized in that, It further includes a pre-charge locking member (113) and a main locking member (114) disposed on the operation interlocking plate (102); when the pre-charge circuit turntable (107) is in the open position through the first operation channel (133), the pre-charge locking member (113) can form a holding force to block the movement of the operation interlocking plate (102) towards the main operation hole (104); or, when the main circuit turntable (106) is in the open position through the second operation channel (134), the main locking member (114) can form a holding force to block the movement of the operation interlocking plate (102) towards the pre-operation hole (103).

3. The mechanical interlocking device according to claim 2, characterized in that, Two rotating shafts (115) and two locking plate blocking columns (116) are provided on the operation interlocking plate (102), and the extending directions of the rotating shafts (115) and the locking plate blocking columns (116) are both perpendicular to the operation surface (105); the pre-charge locking member (113) and the main locking member (114) are respectively rotatably sleeved on two corresponding rotating shafts (115), and spring elements are respectively connected to the pre-charge locking member (113) and the main locking member (114), and the spring elements can form acting forces for the pre-charge locking member (113) and the main locking member (114) to respectively abut against the two locking plate blocking columns (116).

4. The mechanical interlocking device according to claim 3, wherein A first pre-charge limit rod (117) with an extending direction perpendicular to the operation surface (105) is provided on the pre-charge circuit turntable (107). When the pre-charge circuit turntable (107) is in the opening position, the first pre-charge limit rod (117) contacts the side of the pre-charge lock (113) away from the lock plate blocking post (116), forming a resisting force that blocks the operation interlock plate (102) from moving towards the main operation hole (104); A main limit rod (118) with an extending direction perpendicular to the operation surface (105) is provided on the main circuit turntable (106). When the main circuit turntable (106) is in the opening position, the main limit rod (118) contacts the side of the main lock (114) away from the lock plate blocking post (116), forming a resisting force that blocks the operation interlock plate (102) from moving towards the pre-operation hole (103).

5. The mechanical interlocking device according to claim 3, wherein, It further includes an unlocking member (119); An unlocking groove (120) with an extending direction perpendicular to and intersecting the extending direction of the sliding groove (108) is formed on the operation interlock plate (102); An unlocking slide (121) slidably connected to the unlocking groove (120) is provided on the unlocking member (119); A guiding track (122) is provided on the operation surface (105), and a guiding post (123) with an extending direction perpendicular to the operation surface (105) is provided on the unlocking slide (121). The guiding post (123) can be driven to drive the unlocking member (119) to move along the path of the guiding track (122).

6. The mechanical interlocking device according to claim 5, wherein The guiding track (122) includes two slideways (124) formed on the operation surface (105) and parallel to the sliding groove (108), and a first connecting groove (125) and a second connecting groove (126) formed on the operation surface (105); The first connecting groove (125) connects the ends of the two slideways (124) close to the first end (111) of the sliding groove (108), and the second connecting groove (126) connects the middle parts of the two slideways (124).

7. The mechanical interlocking device according to claim 5, characterized in that, A second pre-charge limit rod (127) is provided on the pre-charge circuit turntable (107); When the pre-charge circuit turntable (107) is in the opening position, an unlocking member blocking platform (128) that can abut against the second pre-charge limit rod (127) is provided on the unlocking member (119), so as to form a force for the unlocking member (119) to move towards the main operation hole (104).

8. The mechanical interlocking device according to claim 6, characterized in that, The unlocking member (119) is provided with a pre-pushing arc surface (129) and a main-pushing arc surface (130); the pre-charging locking member (113) is provided with a first guiding arc surface (131) that slidably fits with the pre-pushing arc surface (129), and the main locking member (114) is provided with a second guiding arc surface (132) that slidably fits with the main-pushing arc surface (130); the unlocking slide (121) is driven to move on the unlocking groove (120) closer to the sliding groove (108), and a force is formed between the pre-pushing arc surface (129) and the first guiding arc surface (131) to push the pre-charging locking member (113) to move away from the pre-charging circuit turntable (107) on the rotating shaft (115), so that the first pre-charging limiting rod (117) and the pre-charging locking member (113) can be misaligned and separated in the extending direction of the first pre-charging limiting rod (117); a force is formed between the main-pushing arc surface (130) and the second guiding arc surface (132) to push the main locking member (114) to move away from the main circuit turntable (106) on the rotating shaft (115), so that the main limiting rod (118) and the main locking member (114) can be misaligned and separated in the extending direction of the main limiting rod (118); the elastic element sleeved on the rotating shaft (115) is compressed to generate an elastic force acting on the pre-charging locking member (113) and the main locking member (114) in the axial direction.

9. A fusion switch, characterized in that, It includes a pre-charging switch unit (135), a main switch unit (136), and the mechanical interlocking device (100) according to any one of claims 1-8; wherein, the main circuit turntable (106) is linked with the main switch unit (136) to perform the manual closing and opening operations of the main switch unit; the pre-charging circuit turntable (107) is linked with the pre-charging switch unit (135) to perform the manual closing and opening operations of the pre-charging switch unit (135).

10. A energy storage system, characterized in that, It includes a battery energy storage module and the integrated switch according to claim 9; the integrated switch can control the on-off of the circuit of the battery energy storage module through the mechanical interlocking device (100).

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