Operating mechanism, fusion switch and energy storage system

Abstract

The invention provides an operating mechanism, a fusion switch and an energy storage system, and relates to the technical field of low-voltage electrical appliances, the operating mechanism is used for connecting a pre-charging loop switch body and a main loop switch body, and the operating mechanism has different position states of an opening position, a middle position and a closing position; the operating mechanism is manually or electrically controlled so as to drive the pre-charging loop switch body to be switched on at the middle position, drive the main loop switch body to be switched on at the switching-on position and drive the pre-charging loop switch body to be switched off at the middle position after the main loop switch body is switched on; during opening, the main loop switch body is driven to be opened at the opening position; and the tripping component is used for realizing remote tripping of the main loop switch body.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to an operating mechanism, a fusion switch, and an energy storage system. Background Technology

[0002] Integrated circuit breakers are widely used in power distribution equipment in power systems. They control the current within a safe range for a certain period to achieve the switching function of circuits, and can be used for rapid circuit switching. Currently, integrated circuit breakers generally use motor operation for remote opening and closing. When the motor fails, the remote opening and closing function of the integrated circuit breaker will fail, making it impossible to remotely open the circuit in an emergency, thus creating a certain safety hazard. Summary of the Invention

[0003] The purpose of this application is to address the shortcomings of the prior art by providing an operating mechanism, a fusion switch, and an energy storage system that can achieve remote emergency tripping and ensure the effectiveness of remote tripping of the product.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0005] In one aspect of this application, an operating mechanism is provided. The operating mechanism is used to connect a precharge circuit switch body and a main circuit switch body. The operating mechanism has different position states: open position, intermediate position, and closed position. By manually or electrically operating the operating mechanism, the precharge circuit switch body is first closed in the intermediate position, and the main circuit switch body is then closed in the closed position. After the main circuit switch body is closed, the precharge circuit switch body is opened in the intermediate position. When opening, the main circuit switch body is opened in the open position. The application also includes a tripping component for remotely tripping the main circuit switch body.

[0006] In another aspect of this application, a fusion switch is provided, including the aforementioned operating mechanism, and a precharge circuit switch body and a main circuit switch body respectively connected to the operating mechanism. The precharge circuit switch body and the main circuit switch body are arranged side by side along a first direction, and the operating mechanism is located on one side of the precharge circuit switch body and the main circuit switch body along a second direction. The first direction and the second direction are perpendicular. The precharge circuit switch body includes a plurality of precharge switch units stacked along the first direction, and the main circuit switch body includes a plurality of main switch units stacked along the second direction.

[0007] In another aspect of this application, an energy storage system is provided, including a DC input module, an energy storage module, a control unit, and the aforementioned fusion switch; the fusion switch is connected between the DC input module and the energy storage module, and realizes the electrical connection or disconnection of the DC input module and the energy storage module according to the signal received from the control unit; the control unit is integrated with the fusion switch or is independent of the fusion switch.

[0008] The beneficial effects of this application include:

[0009] This application provides an operating mechanism, a fused switch, and an energy storage system. The operating mechanism enables the switching of the pre-charge circuit switch body and the main circuit switch body. It can also automatically control the remote tripping of the main circuit switch body, facilitating remote emergency tripping in case of faults to ensure product safety. Furthermore, it can achieve millisecond-level disconnection or millisecond-level switching from the pre-charge circuit to the main circuit, with stable switching and fast response. It also supports manual operation, allowing flexible switching between automatic and manual operation to adapt to different scenario requirements. When applied to fused switches and energy storage systems, it can realize functions such as remote opening and closing control, remote emergency tripping control during system power failure, high-current disconnection protection for energy storage systems, and millisecond-level rapid disconnection or switching. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 One of the appearance drawings of the fusion switch provided in the embodiments of this application;

[0012] Figure 2 This is the second appearance view of the fusion switch provided in the embodiments of this application;

[0013] Figure 3 This is one of the structural schematic diagrams of the fusion switch provided in the embodiments of this application;

[0014] Figure 4 This is a second schematic diagram of the structure of the fusion switch provided in the embodiments of this application;

[0015] Figure 5 This is the third schematic diagram of the structure of the fusion switch provided in the embodiments of this application;

[0016] Figure 6 This is a schematic diagram of the linkage mechanism structure of the fusion switch provided in the embodiments of this application;

[0017] Figure 7 Connection diagram of the push rod and linkage mechanism of the fusion switch provided in the embodiments of this application;

[0018] Figure 8 This is a schematic diagram of the main shaft structure of the fusion switch provided in an embodiment of this application;

[0019] Figure 9 This is a schematic diagram of the mating structure of the fusion switch spindle and the limiting ring provided in an embodiment of this application;

[0020] Figure 10 A schematic diagram of the main shaft structure of the fusion switch provided in the embodiments of this application;

[0021] Figure 11 This is the fourth schematic diagram of the structure of the fusion switch provided in the embodiments of this application;

[0022] Figure 12 Fifth schematic diagram of the structure of the fusion switch provided in the embodiments of this application;

[0023] Figure 13 One of the partial structural schematic diagrams of the fusion switch provided in the embodiments of this application;

[0024] Figure 14 A second partial structural schematic diagram of the fusion switch provided in an embodiment of this application;

[0025] Figure 15 This is the third partial structural schematic diagram of the fusion switch provided in the embodiments of this application;

[0026] Figure 16 This is a schematic diagram of the fusion switch precharge circuit switch body structure provided in the embodiments of this application;

[0027] Figure 17 This is a schematic diagram of the main circuit switch body structure of the fusion switch provided in the embodiments of this application;

[0028] Figure 18 This is one of the schematic diagrams of an energy storage system provided in the embodiments of this application;

[0029] Figure 19 This is a second schematic diagram of an energy storage system provided in an embodiment of this application.

[0030] Icons: 1-Fusion switch; 2-DC input module; 3-Energy storage module; 4-Control unit; 5-Energy storage system; 5a-Energy storage box; 10-Operating mechanism; 101-Handle; 101a-Indicator; 11-Break coil; 12-Intermediate coil; 13A-Energy storage component; 13-Energy storage element; 130-Energy storage spring; 131-First abutment part; 132-Second abutment part; 14-Mechanism shaft; 14a-Main shaft; 140-Main shaft body; 140a- Main shaft hole; 140b-Side shaft hole; 141-Limit ring; 141a-Limit groove; 142-Opening side shaft; 143-Closing side shaft; 144-Output gear; 15-Closing coil; 15a-Push rod; 16-Circuit board; 17A-Triggering component; 170-Triggering rod; 170a-Locking part; 171-Triggering coil; 18-Linkage component; 180-Straight gear part; 19-Linkage mechanism; 191-First linkage group; 191a-Slot; 192-First... 193-Third Linkage; 194-First Linkage Plate; 195-Second Linkage Plate; 195a-Locking Protrusion; 196-Reset Spring Assembly; 197-First Coupling; 198-Protruding Plate; 199-Second Coupling; 20-Pre-charge Circuit Switch Body; 20a-Pre-charge Switch Unit; 200-First Main Shaft; 201-Input Gear; 202-First Drive Gear; 203-Energy Storage Lever; 204-Energy Storage Compression Spring; 21-Moving Contact Assembly; 21a-Moving... Contact piece; 221-First stationary contact; 222-Second stationary contact; 30-Main circuit switch body; 30a-Main switch unit; 300-Second main shaft; 301-Second drive gear; 31-Moving contact group; 31a-Moving contact piece; 321-First stationary contact; 322-Second stationary contact; 33-Magnetic coil; F1-First direction; F2-Second direction; a-Rotation angle; b-Sliding distance; off-Open position; mid-Middle position; on-Close position. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be configured, arranged, and designed in various ways.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0033] Please refer to Figure 1In one aspect of this application, a fusion switch 1 is provided, which includes an operating mechanism 10 and a precharge circuit switch body 20 and a main circuit switch body 30 respectively connected to the operating mechanism 10. The precharge circuit switch body 20 and the main circuit switch body 30 are arranged side by side along a first direction F1. The operating mechanism 10 is located on one side of the precharge circuit switch body 20 and the main circuit switch body 30 along a second direction F2. The first direction F1 and the second direction F2 are perpendicular.

[0034] The operating mechanism 10 is operated manually or electrically to drive the precharge circuit switch body 20 to close first and the main circuit switch body 30 to close later when the circuit is closed. After the main circuit switch body 30 is closed, it drives the precharge circuit switch body 20 to open. When the circuit is opened, it drives the main circuit switch body 30 to open.

[0035] The operating mechanism 10 can operate the precharge circuit switch body 20 and the main circuit switch body 30 to switch on and off manually or electrically. The main circuit switch body 30 is the main structure that needs to be turned on when the fusion switch 1 is working normally, while the precharge circuit switch body 20 is a transitional auxiliary structure that is turned on before the main circuit switch body 30 is turned on. This is to avoid sparks or damage to the fusion switch 1 caused by suddenly turning on the main circuit switch body 30.

[0036] When operating, the operating mechanism 10 drives the precharge circuit switch body 20 and the main circuit switch body 30 to operate in the following sequence: the precharge circuit switch body 20 closes first, and the main circuit switch body 30 closes later. After the main circuit switch body 30 closes, the precharge circuit switch body 20 opens. When the merging switch 1 needs to be opened, the operating mechanism 10 drives the main circuit switch body 30 to open.

[0037] In this application, the precharge circuit switch body 20 along the first direction F1 is located above the main circuit switch body 30, while the operating mechanism 10 along the second direction F2 is attached to one side of the precharge circuit switch body 20 and the main circuit switch body 30. This arrangement allows for a compact layout and reduces space occupation.

[0038] Therefore, the fusion switch 1 provided in this application embodiment realizes the switching of the precharge circuit switch body 20 and the main circuit switch body 30 through the operating mechanism 10, and can realize remote opening and closing control in an automatic manner to achieve millisecond-level disconnection or millisecond-level switching from the precharge circuit to the main circuit, with stable switching and fast response speed; at the same time, it can also accommodate manual operation mode, so as to flexibly switch between automatic operation and manual operation to adapt to different scenario requirements; and since the precharge circuit switch body 20 and the main circuit switch body 30 are located side by side on one side, and the operating mechanism 10 is spliced ​​on the other side of the precharge circuit switch body 20 and the main circuit switch body 30, the layout of the fusion switch 1 is compact, effectively reducing the overall space occupied by the fusion switch 1.

[0039] Specifically, the operating mechanism 10 of this application is a three-position mechanism, which can close and open the precharge circuit switch body 20 and the main circuit switch body 30 by electric or manual means, respectively, so as to realize the millisecond-level disconnection or switching of the precharge circuit switch body 20 and the main circuit switch body 30.

[0040] The three positions of the operating mechanism 10 are off, mid, and on, respectively. The operating mechanism 10 has different position states of off, mid, and on.

[0041] When the operating mechanism 10 is in the off position, both the precharge circuit switch body 20 and the main circuit switch body 30 are open.

[0042] When the operating mechanism 10 switches from the open position (off) to the intermediate position (mid), the precharge circuit switch body 20 closes, the main circuit switch body 30 does not operate and remains in the open state; when the operating mechanism 10 switches from the intermediate position (mid) to the closed position (on), the precharge circuit switch body 20 does not operate, and the main circuit switch body 30 closes.

[0043] When the operating mechanism 10 switches from the closed position (on) to the intermediate position (mid), the precharge circuit switch body 20 opens and the main circuit switch body 30 does not operate and remains in the closed state; when switching from the intermediate position (mid) to the open position (off), the precharge circuit switch body 20 does not operate and the main circuit switch body 30 opens.

[0044] To switch between the three positions of the aforementioned operating mechanism 10, either manual or electric operation is possible. Taking manual operation as an example... Figure 2 In the example, by rotating the handle 101, the indicator 101a on the handle 101 is rotated to the open position (off), the intermediate position (mid), and the closed position (on), respectively, and the operating mechanism 10 can be in the corresponding state. Specifically, as shown in the example... Figure 3 As shown, the operating mechanism 10 includes a mechanism rotating shaft 14 and a linkage component 18 that are linked together. The linkage component 18 is linked with the precharge circuit switch body 20, and the mechanism rotating shaft 14 is linked with the main circuit switch body 30.

[0045] The drive linkage 18 and the mechanism shaft 14 move synchronously, and by limiting or releasing the mechanism shaft 14 in the middle position, the precharge circuit switch body 20 moves first and the main circuit switch body 30 moves later.

[0046] The following description uses automatic control as an example. This application uses an electromagnetic component, an energy storage component 13A, and a tripping component 17A to achieve automatic control.

[0047] The electromagnetic components include a trip coil 11, an intermediate coil 12, and a closing coil 15, which are electrically driven to position the operating mechanism 10 in the trip position, intermediate position, and closing position, respectively.

[0048] The mechanism shaft 14, the linkage 18, the closing coil 15, and the opening coil 11 are linked together. The closing coil 15 and the opening coil 11 drive the linkage 18 and the mechanism shaft 14 to move synchronously. The intermediate coil 12 limits or releases the mechanism shaft 14 in the intermediate position, so that the precharge circuit switch body 20 moves first and the main circuit switch body 30 moves later.

[0049] Taking the closing coil 15 as an example, by controlling the closing coil 15, the linkage 18 and the mechanism shaft 14 can be driven to move synchronously. When the linkage 18 moves, the precharge circuit switch body 20 linked with the linkage 18 will close. When the precharge circuit switch body 20 closes, the mechanism shaft 14 will rotate synchronously to the middle position mid. At this time, since the mechanism shaft 14 is limited to the middle position mid by the intermediate coil 12, the mechanism shaft 14 cannot rotate and the main circuit switch body 30 does not move when it is in the middle position mid. When the intermediate coil 12 releases the limitation on the mechanism shaft 14, the mechanism shaft 14 can continue to rotate, driving the main circuit switch body 30 linked with the mechanism shaft 14 to close.

[0050] As can be seen, from the open position (off) to the intermediate position (mid), the precharge circuit switch body 20 closes, and the mechanism shaft 14 is restricted, causing the main circuit switch body 30 to remain in the open state without operation. Upon release of the restriction, the mechanism shaft 14 rotates from the intermediate position (mid) to the closed position (on), and the main circuit switch body 30 closes at the closed position (on). Similarly, when the control open coil 11 operates, it can drive the linkage 18 and the mechanism shaft 14 to move in opposite directions. The linkage 18 moves in the opposite direction, driving the precharge circuit switch body 20 to open at the intermediate position (mid). The mechanism shaft 14 is restricted in the intermediate position; after the restriction is released, the mechanism shaft 14 continues to rotate in the opposite direction, driving the main circuit switch body 30 to open at the open position (off).

[0051] By setting the intermediate coil 12, the purpose of the pre-charge circuit switch body 20 being closed or opened first, and the main circuit switch body 30 being closed or opened later, is achieved.

[0052] Specifically, such as Figure 4 As shown, two linkage mechanisms 19 are provided between the mechanism shaft 14 and the linkage component 18. One linkage mechanism 19 is used for the linkage of closing the circuit breaker, and the other linkage mechanism 19 is used for the linkage of opening the circuit breaker. The linkage component 18 and the mechanism shaft 14 are synchronized through the linkage mechanism 19.

[0053] When applied to electric control, the closing coil 15 and the opening coil 11 are linked together via their respective linkage mechanisms 19, connecting elements 18, and mechanism shafts 14. For example, refer to... Figure 5 , 6 The linkage mechanism 19 includes a first linkage group 191, a second linkage group 192 and a third linkage group 193 that are rotatably connected. The linkage member 18 is connected to the first linkage group 191 on the closing side and the opening side respectively. The mechanism shaft 14 is connected to the third linkage group 193 on the closing side and the opening side respectively.

[0054] When the closing coil 15 and the opening coil 11 are working, they drive the first linkage group 191 to rotate, thereby driving the linkage member 18 to move, and simultaneously driving the mechanism shaft 14 to move through the second linkage group 192 and the third linkage group 193; the intermediate coil 12 restricts the mechanism shaft 14 to the intermediate position, and the linkage member 18 drives the precharge circuit switch body 20 to close or open first in the intermediate position; the intermediate coil 12 releases the restriction on the mechanism shaft 14, and the mechanism shaft 14 continues to rotate to drive the main circuit switch body 30 to close or open later.

[0055] Taking the closing coil 15 as an example, such as Figure 7 As shown, the closing coil 15 has a push rod 15a. By switching the closing coil 15 energized and de-energized, the push rod 15a can be controlled to rise and fall. The push rod 15a is connected in sequence by a first connecting plate 194, a second connecting plate 195, a first connecting shaft 197, and a first connecting rod group 191. One end of the first connecting plate 194 is clamped between two protruding plates 198 extending from the push rod 15a, and the other end is clamped within two second connecting plates 195. The second connecting plates 195 are sleeved on the first connecting shaft 197. Both ends of the first connecting shaft 197 are connected to the first connecting rod group 191, which has a U-shaped structure. The two ends of the first connecting shaft 197 are connected to the two walls of the U-shape. The first connecting rod group 191 is provided with a slot 191a, and one end of the second connecting plate 195 is... Figure 5 The cam 195a engages with the slot 191a to drive the first linkage 191 to move.

[0056] All the above components are connected by a rotating connection. In this way, when the top rod 15a is lifted, it drives the first connecting plate 194, the second connecting plate 195 and the first connecting rod group 191 to rotate.

[0057] When the first linkage group 191 rotates, it drives the linkage member 18 to move. In the embodiment of this application, the linkage member 18 is a flat plate structure with four ends. The four ends are respectively rotatably connected to the first linkage group 191 on the side of the closing coil 15 and the first linkage group 191 on the side of the opening coil 11. The rotation of the first linkage group 191 on the side of the closing coil 15 can drive the linkage member 18 to slide towards the side of the closing coil 15.

[0058] The linkage 18 has a straight tooth 180 on the side facing the precharge circuit switch body 20. The straight tooth 180 meshes with the precharge circuit switch body 20 to complete the function of the first linkage group 191 driving the linkage 18 and driving the precharge circuit switch body 20 to close first.

[0059] On the other hand, when the first linkage group 191 rotates and drives the linkage 18 to slide, it also drives the second linkage group 192 and the third linkage group 193 to rotate, which in turn drives the mechanism shaft 14 to rotate, and the mechanism shaft 14 then drives the main circuit switch body 30 to close.

[0060] In this application, an output gear 144 is sleeved on the mechanism shaft 14. The output gear 144 meshes with the main circuit switch body 30 to drive the main circuit switch body 30.

[0061] When the trip coil 11 is working, the closing process described above can be compared and performed, which will not be repeated here.

[0062] In one implementation of this application, the mechanism shaft 14 includes Figure 8 The main rotating shaft 14a shown, and the closing side shaft 143 and the opening side shaft 142 respectively arranged on both sides of the main rotating shaft 14a. The closing side shaft 143 is connected to the third link group 193 on one side of the closing coil 15, and the opening side shaft 142 is connected to the third link group 193 on one side of the opening coil 11.

[0063] The mechanism shaft 14 has a main shaft body 140 for bearing loads. The main shaft body 140 has a main shaft hole 140a and side shaft holes 140b located on both sides of the main shaft hole 140a. Figure 4 , Figure 10 The main rotating shaft 14a is set in the main shaft hole 140a, and the closing side shaft 143 and the opening side shaft 142 are located in the side shaft holes 140b on both sides respectively.

[0064] The closing side shaft 143 passes through the hole on the third link group 193 and the side shaft hole 140b on the closing side, so that the closing side shaft 143 is connected to the third link group 193 on the side of the closing coil 15; the opening side shaft 142 is set in the same way.

[0065] In addition, a reset spring assembly 196 is provided between the first linkage group 191, the second linkage group 192, and the third linkage group 193. When the linkage mechanism 19 is activated, the reset spring assembly 196 is pulled accordingly, which can be used to provide energy storage for the closing and opening of the main circuit switch body 30 and reset the linkage mechanism 19.

[0066] For example, the second link assembly 192 and the third link assembly 193 are both H-shaped structures. The second link assembly 192 and the third link assembly 193 are rotatably connected by a second shaft 199, and one end of the return spring assembly 196 is connected to the first shaft 197 and the other end is connected to the second shaft 199.

[0067] The reset spring assembly 196 has a pair of reset springs to enhance the pulling force, providing stronger energy storage for the main circuit switch body 30 to close and open, and the reaction force of the pulling force can also enable the linkage mechanism 19 to reset quickly.

[0068] As mentioned above, the function of the intermediate coil 12 is to restrict the mechanism shaft 14 to the intermediate position. The intermediate coil 12 has states that abut against the open side and the closed side of the mechanism shaft 14 respectively, so that the mechanism shaft 14 is limited to the intermediate position. When the intermediate coil 12 abuts against the closed side of the mechanism shaft 14, the mechanism shaft 14 cannot continue to rotate in the closing direction, and thus cannot drive the main circuit switch body 30 to close. Conversely, when the mechanism shaft 14 is restricted to the open position, the mechanism shaft 14 cannot continue to rotate in the opening direction, and the main circuit switch body 30 cannot open.

[0069] When the intermediate coil 12 and the mechanism shaft 14 are disengaged from each other on the opening or closing side, the mechanism shaft 14 continues to rotate in the opening or closing direction so that the mechanism shaft 14 moves from the intermediate position to the opening or closing position, and the main circuit switch body 30 can realize opening or closing.

[0070] The intermediate coil 12 is specifically engaged with or disengaged from the main shaft 140 of the mechanism rotating shaft 14. The main shaft 140 has a three-axis integrated structure. Taking the closing operation as an example, when the intermediate coil 12 is working, the push rod of the intermediate coil 12 rises. When the end of the main shaft 140 on the closing side rotates, it engages with the push rod of the intermediate coil 12. The push rod of the intermediate coil 12 prevents the main shaft 140 from continuing to rotate towards the closing side, thus restricting the main shaft 140 to the middle position, which in turn restricts the mechanism rotating shaft 14 to the middle position.

[0071] When the push rod of the intermediate coil 12 is lowered, the push rod of the intermediate coil 12 and the end of the main shaft 140 on the closing side are released from contact, and the main shaft 140 can continue to rotate towards the closing side to realize the closing of the main circuit switch body 30.

[0072] Furthermore, such as Figure 4 , Figure 9 As shown, a limiting ring 141 is also fitted on the main shaft body 140. Two symmetrical strip-shaped limiting grooves 141a are formed on the limiting ring 141. The ends of the closing side shaft 143 and the opening side shaft 142 are respectively located in the corresponding limiting grooves 141a, so that the closing side shaft 143 and the opening side shaft 142 can move in the corresponding limiting grooves 141a, so as to limit the two respectively.

[0073] In addition to the above-mentioned opening and closing operations, the operating mechanism 10 can also store energy through the energy storage component 13A. The energy storage component 13A stores and locks energy when the pre-charge circuit switch body 20 and the main circuit switch body 30 are closed.

[0074] It also includes a tripping component 17A for locking with the energy storage component 13A; remote control releases the tripping component 17A and the energy storage component 13A; the energy storage component 13A reverses to remotely trip and open the main circuit switch body 30; in addition, the reverse of the energy storage component 13A can also remotely trip and open the precharge circuit switch body 20.

[0075] The energy storage component 13A and the tripping component 17A cooperate to store energy in positions I and II respectively. Position I is the energy storage position when the pre-charge circuit switch body 20 is closed, and position II is the energy storage position when the main circuit switch body 30 is closed. When the energy storage component 13A stores energy in the above two positions, it is simultaneously locked in the energy storage position by the tripping component 17A, so that the energy storage component 13A is kept in the energy storage position.

[0076] When the tripping component 17A and the energy storage component 13A are unlocked, the energy storage component 13A can reverse to drive the main circuit switch body 30 and the precharge circuit switch body 20 to trip and open. The tripping component 17A can be remotely controlled to achieve remote tripping and opening.

[0077] Specifically, refer to Figure 11 As shown, the energy storage component 13A includes an energy storage element 13 and an energy storage spring 130 sleeved on the mechanism shaft 14, and the tripping component 17A includes a tripping coil 171 and a tripping rod 170 connected to the tripping coil 171.

[0078] When the circuit is closed, the mechanism shaft 14 rotates to drive the energy storage component 13 and the energy storage spring 130 to store energy. The energy storage component 13A is locked by the trip rod 170 abutting against the energy storage component 13. When the trip coil 171 is remotely controlled to work, so as to drive the trip rod 170 and the energy storage component 13 to release the abutment, the energy storage component 13 and the energy storage spring 130 release energy to drive the mechanism shaft 14 to reverse and realize remote circuit breaking.

[0079] The energy storage component 13 has a first abutment portion 131 and a second abutment portion 132, corresponding to positions I and II respectively; the tripping lever 170 has a locking portion 170a. The first abutment portion 131 is used to abut or separate from the locking portion 170a, so as to store energy and lock in position I when the precharge circuit switch body 20 is closed, or to unlock and open the circuit; the second abutment portion 132 is used to abut or separate from the locking portion 170a, so as to store energy and lock in position II when the main circuit switch body 30 is closed, or to unlock and open the circuit.

[0080] When the fusion switch 1 is in the pre-charge circuit switch body 20 closed and the main circuit switch body 30 is open, the control trip coil 171 is activated to drive the trip rod 170 and the energy storage component 13 to release the contact at position I. The energy storage component 13 and the energy storage spring 130 drive the mechanism shaft 14 to reverse and drive the pre-charge circuit switch body 20 to open.

[0081] When the fusion switch 1 is in the pre-charge circuit switch body 20 open and the main circuit switch body 30 closed, it is necessary to control both the trip coil 171 and the intermediate coil 12 to work, drive the trip rod 170 and the energy storage component 13 to release the II position abutment. At the same time, the operation of the intermediate coil 12 can release the restriction state of the mechanism shaft 14 in the middle position, so that the mechanism shaft 14 can rotate toward the open side, and drive the main circuit switch body 30 to open through the energy storage component 13A.

[0082] Based on this, current limiting tripping can also be achieved through the magnetic induction coil 33; a circuit board 16 is also provided on one side of the tripping coil 171, which is used to connect the tripping coil 171 and the magnetic induction coil 33 of the main circuit switch body 30. The magnetic induction coil 33 collects the main circuit current of the main circuit switch body 30. For example, such as Figure 17 As shown, the magnetic induction coil 33 of this application is mounted on the contact plate of the first stationary contact 321.

[0083] When the main circuit current collected by the magnetic induction coil 33 exceeds the preset value, a current limiting signal is transmitted to the trip coil 171 through the circuit board 16. The trip coil 171 then drives the main circuit switch body 30 to open, thus performing current limiting tripping. During current limiting tripping, the process of driving the main circuit switch body 30 to open through the trip coil 171 is the same as that of remote tripping and can be referred to the above-described remote tripping procedure.

[0084] In addition to sampling the main circuit current through the magnetic induction coil 33, the circuit board 16 judges the relationship between the sampled current value and the preset current value, and transmits the trip signal to the trip coil 171 according to the judgment result, the current limiting trip of the present application can also realize the remote tripping of the main circuit switch body 30 through remote control.

[0085] Specifically, circuit board 16 is used to receive remote tripping signals and drive tripping component 17A and energy storage component 13A to release the limiting signal. Energy storage component 13A releases energy to trip and open the main circuit switch body 30. The current limiting tripping can quickly achieve remote tripping of the main circuit switch body 30 through remote control, so as to provide timely protection and disconnection of the fusion switch.

[0086] It should be noted that the trip coil 171 can be manually reset on-site or remotely. If it trips due to a fault, it must be reset on-site after the disconnection fault has been eliminated. Remote reset will not work.

[0087] Thus, the fusion switch 1 of this application embodiment can realize the functions of automatic closing and opening, remote tripping and opening, and remote current limiting tripping and opening through the operating mechanism 10.

[0088] In summary, the electric operation mode of the above-mentioned operating mechanism 10 is as follows: the initial state of the fusion switch 1 is the double open position, and both the main circuit switch body 30 and the precharge circuit switch body 20 are in the open state; when the closing coil 15 works for the first time, the linkage mechanism 19 drives the mechanism shaft 14 to rotate to the middle position mid by a rotation angle a, and simultaneously drives the linkage 18 to slide towards the closing coil 15 by a sliding distance b, so that the precharge circuit switch body 20 is closed. At this time, the mechanism shaft 14 is restricted to the middle position mid by the intermediate coil 12, and the main circuit switch body 30 does not move as an idle stroke. The main circuit switch body 30 is still in the open state; when the intermediate coil 12 works, the mechanism shaft 14 is released from the limit and rotates past the middle position mid, and then continues to rotate to the closing position on by a rotation angle a. The mechanism shaft 14 drives the main circuit switch body 30 to close. Conversely, when the trip coil 11 is activated, it drives the mechanism shaft 14 to rotate in the opposite direction at a rotation angle a to the intermediate position mid. The synchronous linkage 18 slides towards the trip coil 11 with a sliding distance b, which drives the precharge circuit switch body 20 to trip. At this time, the mechanism shaft 14 is restricted to the intermediate position mid, and the main circuit switch body 30 does not move as a no-travel. The main circuit switch body 30 is still in the closed state. When the intermediate coil 12 is activated, the mechanism shaft 14 is released from the limit and rotates in the opposite direction at a rotation angle a. The mechanism shaft 14 drives the main circuit switch body 30 to trip at the trip position off.

[0089] It can be seen that in this application, the open position (off) and the closed position (on) are symmetrically located on both sides of the intermediate position (mid), so that the rotation angle α of the mechanism shaft 14 between the intermediate position (mid) and the open position (off) is equal to the rotation angle α between the intermediate position (mid) and the closed position (on). Similarly, the sliding distance b of the linkage 18 between the intermediate position (mid) and the open position (off) is equal to the sliding distance b between the intermediate position (mid) and the closed position (on).

[0090] The above process can also be achieved through manual operation. The operating mechanism 10 includes a handle 101, which is linked to the linkage 18 and the mechanism shaft 14 to realize manual operation of the operating mechanism 10 to achieve manual closing and opening of the circuit breaker and energy storage functions.

[0091] Specifically, the handle 101 is connected to the mechanism shaft 14, which can drive the mechanism shaft 14 to move, thereby driving the linkage 18 to move synchronously, completing the manual operation of the pre-charge circuit switch body 20 and the main circuit switch body 30. Figure 1 It can be seen that the handle 101 is located on the other side of the operating mechanism 10, away from the precharge circuit switch body 20 and the main circuit switch body 30.

[0092] In addition, such as Figure 1 As shown, the main circuit switch body 30 and the precharge circuit switch body 20 are set with different frames; the precharge circuit switch body 20 carries the control current, so a small frame is sufficient to meet the requirements; the main circuit switch body 30 carries the large current, so a large frame is used.

[0093] The manual operation mode of the operating mechanism 10 is as follows: the initial state of the fusion switch 1 is the double open position, and both the main circuit switch body 30 and the precharge circuit switch body 20 are in the open state; the handle 101 drives the mechanism shaft 14 to rotate to the middle position mid by rotation angle a, and simultaneously drives the linkage 18 to slide towards the closing coil 15 by sliding distance b, so that the precharge circuit switch body 20 is closed. At this time, the mechanism shaft 14 is restricted to the middle position mid by the intermediate coil 12, and the main circuit switch body 30 is not moved as an idle stroke. The main circuit switch body 30 is still in the open state; the limit point of the intermediate coil 12 is pressed by external force, so that the mechanism shaft 14 is released from the limit and rotates past the middle position mid. The handle 101 drives the mechanism shaft 14 to continue to rotate to the closing position on by rotation angle a, so that the main circuit switch body 30 is closed. Conversely, when the reverse handle 101 drives the mechanism shaft 14 to rotate in the opposite direction by rotation angle a to the intermediate position mid, it simultaneously drives the linkage 18 to slide towards the trip coil 11 by a sliding distance b, causing the precharge circuit switch body 20 to trip. At this time, the mechanism shaft 14 is restricted to the intermediate position mid, and the main circuit switch body 30 remains stationary as a no-travel, still in the closed state. When the limit point of the intermediate coil 12 is pressed by external force, the mechanism shaft 14 is released from the limit and rotates in the opposite direction by rotation angle a, causing the mechanism shaft 14 to trip the main circuit switch body 30. It can be seen that during manual operation, the setting or release of the intermediate position mid is done manually.

[0094] Reference Figure 12 , Figure 13 For the precharge circuit switch body 20, it includes a plurality of precharge switch units 20a stacked along the first direction F1. The plurality of precharge switch units 20a are connected by a first main shaft 200. A first drive gear 202 is sleeved on the first main shaft 200. The first drive gear 202 meshes with the spur gear 180 through an input gear 201.

[0095] As mentioned above, the operating mechanism 10 includes a linkage 18, on which a spur tooth 180 is formed. The spur tooth 180 engages with the precharge circuit switch body 20 for transmission. In the example of this application, the spur tooth 180 engages with the input gear 201 for transmission, and the input gear 201 engages with the first drive gear 202 sleeved on the first main shaft 200 for transmission, thereby driving the first main shaft 200 to rotate, which in turn drives the contacts of the precharge circuit switch body 20 to open and close.

[0096] The first main shaft 200 connects multiple precharge switch units 20a. When the first main shaft 200 rotates, the multiple precharge switch units 20a can be opened and closed synchronously, maintaining the consistency of the operation of each layer of precharge switch units 20a.

[0097] The first spindle 200 is also connected to an energy storage component, which drives the first spindle 200 to rapidly open and close the precharge circuit switch body 20. For example, such as... Figure 14 , Figure 15 As shown, the energy storage component includes an energy storage lever 203 disposed on the first main shaft 200, and an energy storage spring 204 connected to the energy storage lever 203. One end of the energy storage spring 204 is connected to the energy storage lever 203, and the other end is connected to the inner shell wall of the precharge circuit switch body 20.

[0098] When the first main shaft 200 rotates, it synchronously drives the energy storage lever 203 to rotate. The rotation of the energy storage lever 203 causes the energy storage spring 204 to twist and store energy. When it is necessary to rotate in the opposite direction, the energy released by the energy storage spring 204 can quickly drive the first main shaft 200 to reverse, so as to realize the rapid opening and closing of the precharge circuit switch body 20.

[0099] The main circuit switch body 30 includes multiple main switch units 30a stacked along the second direction F2. The multiple main switch units 30a are connected by a second main shaft 300. A second drive gear 301 is sleeved on the second main shaft 300. The second drive gear 301 meshes with the output gear 144.

[0100] Each layer of main switch unit 30a achieves synchronous operation through the second main shaft 300. An output gear 144 is sleeved on the mechanism shaft 14 of the operating mechanism 10. The output gear 144 drives the second main shaft 300 to rotate through the second drive gear 301, thereby realizing the opening and closing of each layer of main switch unit 30a.

[0101] Both the pre-charge circuit switch body 20 and the main circuit switch body 30 can be combined with multi-layer switch units to derive a larger current-generating fusion switch 1.

[0102] The first main shaft 200 is set along the first direction F1, and the second main shaft 300 is set along the second direction F2. The two are arranged perpendicularly to facilitate linkage with the operating mechanism 10 and to improve the overall spatial layout of the fusion switch 1, thereby increasing the structural compactness of the fusion switch 1 and greatly reducing the spatial structure of the fusion switch 1.

[0103] like Figure 16As shown, each precharge switch unit 20a is provided with a moving contact group 21 and a first stationary contact 221 and a second stationary contact 222 located on both sides of the moving contact group 21. The first stationary contact 221 and the second stationary contact 222 are respectively plugged into and connected to the two ends of the moving contact group 21.

[0104] The moving contact assembly 21 has two moving contact pieces 21a. A first stationary contact 221 and a second stationary contact 222 are respectively clamped between the two moving contact pieces 21a. This clamping method improves the reliability of contact. Similarly, [the following is a separate section]. Figure 17 The main switch unit 30a is provided with a moving contact group 31 and a first stationary contact 321 and a second stationary contact 322 located on both sides of the moving contact group 31. The first stationary contact 321 and the second stationary contact 322 are respectively plugged into and connected to the two ends of the moving contact group 31.

[0105] The moving contact assembly 31 has two moving contact pieces 31a, with a first stationary contact 321 and a second stationary contact 322 respectively sandwiched between the two moving contact pieces 31a.

[0106] In the aforementioned pre-charge circuit switch body 20 and main circuit switch body 30, the first stationary contact and the second stationary contact are located at both ends of the moving contact group to form a double-break contact structure, which can improve the short-term resistance of the product and make the contact performance better.

[0107] In summary, the electric operation mode of the precharge circuit switch body 20 is as follows: the initial state of the fusion switch 1 is in the double open position, and both the main circuit switch body 30 and the precharge circuit switch body 20 are in the open state; when the closing coil 15 works for the first time, it drives the linkage 18 to close the precharge circuit switch body 20, and also drives the mechanism shaft 14 to rotate from the open position off to the middle position mid, thereby causing the energy storage component 13A to rotate to achieve energy storage and locking at position I. The main circuit switch body 30 remains stationary as an idle stroke and is in the open state; when the opening coil 11 works, it drives the linkage 18 to move in the opposite direction to open the precharge circuit switch body 20, and also drives the mechanism shaft 14 to rotate in the opposite direction from the middle position mid to the open position off. At this time, the energy storage component 13A is unaffected and does not move, and the main circuit switch body 30 remains stationary as an idle stroke and is in the open state.

[0108] After the energy storage component 13A stores energy in position I, it can only release energy and rotate when the trip coil 171 is working. When the precharge circuit switch body 20 is in the closed state and the main circuit switch body 30 is in the open state, the precharge circuit switch body 20 can be directly opened.

[0109] The electric operation mode of the main circuit switch body 30 is as follows: the initial state of the fusion switch 1 is the double open position, and both the main circuit switch body 30 and the precharge circuit switch body 20 are in the open state; when the closing coil 15 works for the first time, the intermediate coil 12 is synchronously controlled to work to eliminate the limitation of the intermediate coil 12 on the mechanism shaft 14, that is, to eliminate the intermediate position mid; the linkage 18 is driven to make the precharge circuit switch body 20 close in the intermediate position mid, and also drives the mechanism shaft 14 to rotate, so that the main circuit switch body 30 is closed in the closed position on, and synchronously drives the energy storage component 13A to rotate to realize energy storage and locking in position II; the opening coil 11 works, and through the linkage mechanism 19, the linkage 18 is driven to move in the opposite direction to make the precharge circuit switch body 20 open, and also drives the mechanism shaft 14 to rotate in the opposite direction, stopping in the intermediate position mid; the opening coil 11 and the intermediate coil 12 are controlled to work again, the mechanism shaft 14 continues to rotate in the opposite direction, the main circuit switch body 30 is open, and at this time the energy storage component 13A is not affected and does not operate.

[0110] After the energy storage component 13A stores energy in position II, it can only release energy and rotate when the trip coil 171 and the intermediate coil 12 work simultaneously. When the precharge circuit switch body 20 is open and the main circuit switch body 30 is in the closed state, the main circuit switch body 30 can be directly opened.

[0111] After the energy storage component 13A stores energy in position II, the main circuit switch body 30 closes and operates normally. When a large current appears in the main circuit switch body 30, for example, the main circuit current > 2.5In, the magnetic coil transmits the signal to the trip coil 171 through the circuit board 16. The trip coil 171 and the intermediate coil 12 work simultaneously, and the energy storage component 13A releases energy and rotates, causing the main circuit switch body 30 to open directly.

[0112] When the intermediate coil 12 causes the mechanism shaft 14 to move from the open position (off) to the intermediate position (mid), the precharge circuit switch body 20 closes, and the main circuit switch body 30 remains open and does not operate. When the intermediate position (mid) moves to the closed position (on), the precharge circuit switch body 20 has no travel and remains closed, while the main circuit switch body 30 closes. Conversely, when moving from the closed position (on) to the intermediate position (mid), the precharge circuit switch body 20 opens, and the main circuit switch body 30 remains closed and does not operate. When moving from the intermediate position (mid) to the open position (off), the precharge circuit switch body 20 has no travel and remains open, while the main circuit switch body 30 opens.

[0113] The manual operation modes of the precharge circuit switch body 20 and the main circuit switch body 30 can be referenced to the automatic operation's opening and closing and energy storage processes described above. The difference is that during manual operation, the handle 101 drives the mechanism shaft 14 to rotate, synchronously driving the linkage 18 to move. In addition, when switching at the intermediate position mid during manual operation, the limiting point of the intermediate coil 12 can be manually operated to restrict the mechanism shaft 14 to the intermediate position mid or release the restriction at the intermediate position mid. Other details will not be elaborated further.

[0114] Thus, the integrated switch 1 realizes automatic or manual opening and closing and energy storage control. In automatic control, it can also realize remote opening trip and current limiting trip.

[0115] Based on this, please refer to Figure 18 This application also discloses an energy storage system 5, including a DC input module 2, an energy storage module 3, a control unit 4, and a fusion switch 1 as described above; the fusion switch 1 is connected between the DC input module 2 and the energy storage module 3, and realizes the electrical connection or disconnection of the DC input module 2 and the energy storage module 3 according to the signal received from the control unit 4; the control unit 4 is integrated with the fusion switch 1, or is independent of the fusion switch 1.

[0116] The aforementioned integrated switch 1 is applicable to various energy storage systems 5 and can realize functions such as remote opening and closing control, remote emergency opening control when the system is powered off, high current breaking protection of the energy storage system 5, and millisecond-level fast breaking or switching.

[0117] The energy storage module 3 can be a battery, a refrigerated battery, or a mobile battery pack (electric vehicle or mobile battery pack). The control unit 4 can exist independently of the fusion switch 1 or be integrated into the fusion switch 1. The DC source of the DC input module 2 can be a photovoltaic module, a photovoltaic string, a series-parallel circuit of photovoltaic modules and photovoltaic strings, or a power conversion unit. The power conversion unit can be a DC / DC converter or a DC / AC converter.

[0118] Both the DC input module 2 and the energy storage module 3 can be regarded as power supply circuits. When the power supply circuit fails, for example, if the DC input module 2 and the energy storage module 3 fail, the control unit 4 detects the occurrence of this failure and can send a trip signal to the fusion switch 1. This trip signal is used to trigger (i.e. drive) the fusion switch 1 to trip and disconnect the circuit.

[0119] The energy storage system 5 includes an energy storage box 5a, and the integrated switch 1, DC input module 2, energy storage module 3, and control unit 4 are all located inside the energy storage box 5a. Figure 19 An example of a fusion switch 1 located in an energy storage box 5a is shown, with a handle 101 protruding from the energy storage box 5a for easy operation.

[0120] The energy storage system 5 includes the same structure and beneficial effects as the fusion switch 1 in the foregoing embodiments. The structure and beneficial effects of the fusion switch 1 have been described in detail in the foregoing embodiments and will not be repeated here.

[0121] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An operating mechanism characterized by comprising: The operating mechanism (10) is used for connecting the pre-charging circuit switch body (20) and the main circuit switch body (30), and has different position states of an off position, a mid position and an on position; The operating mechanism (10) is manually or electrically operated to drive the pre-charging circuit switch body (20) to first close in the mid position (mid) and drive the main circuit switch body (30) to later close in the on position (on), and after the main circuit switch body (30) is closed, the pre-charging circuit switch body (20) is driven to open in the mid position (mid); when opening, the main circuit switch body (30) is driven to open in the off position (off); Further comprising a tripping component (17A) for realizing remote tripping of the main circuit switch body (30).

2. The operating mechanism according to claim 1, characterized in that When the operating mechanism (10) is in the off position (off), the pre-charging circuit switch body (20) and the main circuit switch body (30) are both open; When the operating mechanism (10) is switched from the off position (off) to the mid position (mid), the pre-charging circuit switch body (20) is first closed and the main circuit switch body (30) is not operated; when the operating mechanism (10) is switched from the mid position (mid) to the on position (on), the pre-charging circuit switch body (20) is not operated and the main circuit switch body (30) is later closed; When the operating mechanism (10) is switched from the on position (on) to the mid position (mid), the pre-charging circuit switch body (20) is first opened and the main circuit switch body (30) is not operated; when the operating mechanism (10) is switched from the mid position (mid) to the off position (off), the pre-charging circuit switch body (20) is not operated and the main circuit switch body (30) is later opened.

3. The operating mechanism of claim 1, wherein The operating mechanism (10) comprises a mechanism rotating shaft (14) and a linkage (18) in linkage arrangement, the linkage (18) is linked with the pre-charging circuit switch body (20), and the mechanism rotating shaft (14) is linked with the main circuit switch body (30); The linkage (18) and the mechanism rotating shaft (14) are synchronously operated, and the pre-charging circuit switch body (20) is first operated and the main circuit switch body (30) is later operated by limiting or releasing the limitation of the mechanism rotating shaft (14) in the mid position (mid).

4. The operating mechanism according to claim 3, characterized in that The tripping component (17A) comprises a tripping coil (171) and a tripping rod (170) connected with the tripping coil (171), the tripping rod (170) is linked with the mechanism rotating shaft (14) through an energy storage component (13A), the energy storage component (13A) is used for storing energy when the main circuit switch body (30) is closed and is locked with the tripping component (17A); The tripping component (17A) and the energy storage component (13A) are remotely controlled to be released from the lock, and the energy storage component (13A) is reversed to remotely trip and open the main circuit switch body (30).

5. The operating mechanism of claim 4, wherein The energy storage component (13A) comprises an energy storage piece (13) and an energy storage spring (130) sleeved on the mechanism rotating shaft (14); when closing, the mechanism rotating shaft (14) drives the energy storage piece (13) and the energy storage spring (130) to store energy, and the energy storage piece (13) and the energy storage spring (130) are locked by abutting against each other through the trip lever (170) and the energy storage piece (13); When the trip coil (171) drives the trip lever (170) and the energy storage piece (13) to be disengaged, the energy storage piece (13) and the energy storage spring (130) drive the mechanism rotating shaft (14) to reverse and open.

6. The operating mechanism of claim 5, wherein The energy storage piece (13) is formed with a first abutting portion (131) and a second abutting portion (132), and the trip lever (170) is formed with a locking portion (170a); the first abutting portion (131) is used for abutting or separating with the locking portion (170a) to store energy and lock or unlock opening when the pre-charging circuit switch body (20) is closed; and the second abutting portion (132) is used for abutting or separating with the locking portion (170a) to store energy and lock or unlock opening when the main circuit switch body (30) is closed.

7. Operating mechanism according to any one of claims 1 to 6, characterized in that The trip component (17A) is also linked with the pre-charging circuit switch body (20) to remotely trip the pre-charging circuit switch body (20).

8. Operating mechanism according to any one of claims 4 to 6, characterized in that A circuit board (16) is further included, which is used for connecting the trip coil (171) and a magnetic induction coil (33) on the main circuit switch body (30), the magnetic induction coil (33) collects the main circuit current of the main circuit switch body (30); when the main circuit current is greater than a preset value, the main circuit switch body (30) is opened by the trip coil (171) to trip and limit the current.

9. A fusion switch, characterized by The operation mechanism (10) of any one of claims 1 to 8 is included, and a pre-charging circuit switch body (20) and a main circuit switch body (30) are respectively connected with the operation mechanism (10); the pre-charging circuit switch body (20) and the main circuit switch body (30) are arranged side by side along a first direction (F1), and the operation mechanism (10) is located on one side of the pre-charging circuit switch body (20) and the main circuit switch body (30) along a second direction (F2), and the first direction (F1) and the second direction (F2) are perpendicular; The pre-charging circuit switch body (20) comprises a plurality of pre-charging switch units (20a) stacked along the first direction (F1), and the main circuit switch body (30) comprises a plurality of main switch units (30a) stacked along the second direction (F2).

10. The fusion switch of claim 9, wherein, The plurality of pre-charging switch units (20a) of the pre-charging circuit switch body (20) are connected through a first main shaft (200); The first main shaft (200) is further connected with an energy storage assembly, and the first main shaft (200) is driven by the energy storage assembly to make the pre-charging circuit switch body (20) quickly open and close; The energy storage assembly comprises an energy storage lever (203) arranged on the first main shaft (200), and an energy storage compression spring (204) connected with the energy storage lever (203).

11. An energy storage system characterized by, The fusion switch (1) of claim 9 or 10 is connected between the DC input module (2) and the energy storage module (3), and realizes the electrical connection or disconnection of the DC input module (2) and the energy storage module (3) according to the received signal of the control unit (4); the control unit (4) is integrally arranged with the fusion switch (1), or is independent of the fusion switch (1).

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