A fusion switch

Abstract

This application discloses a fusion switch, relating to the field of switch technology, aiming to solve the problems in existing technologies where the main shaft needs to simultaneously drive the main circuit and pre-charge circuit springs for energy storage and requires a large driving force. It includes a main circuit drive shaft, a pre-charge circuit drive shaft, and a drive device with a power shaft. The power shaft and the two drive shafts are respectively provided with first and second one-way clutch engagement structures. When the power shaft rotates in the first rotation direction, the main circuit drive shaft remains stationary, while the pre-charge circuit drive shaft rotates synchronously; when rotating in the second rotation direction, the pre-charge circuit drive shaft remains stationary, while the main circuit drive shaft rotates synchronously. It also includes a main / pre-charge circuit switching mechanism and a control system, enabling priority closing of the pre-charge circuit and subsequent closing of the main circuit, with orderly opening and closing, reducing mechanical shock, improving operational reliability, and suitable for circuit scenarios where surge current must be avoided.

Description

Technical Field

[0001] This application relates to a switch, and more particularly to a fusion switch. Background Technology

[0002] Patent CN202311153259.5 provides a fusion switch, including: a circuit breaker; a precharge switch; and a transmission mechanism operably disposed between the main shaft of the circuit breaker and the precharge moving contact of the precharge switch. The transmission mechanism is driven by the main shaft during rotation, causing the precharge moving contact to rotate between a precharge closed position and a precharge open position. During the rotation of the main shaft along a first direction to rotate the moving contact from the open position to the closed position, the main shaft drives the transmission mechanism to rotate the precharge moving contact from the precharge open position to the precharge closed position. If precharge is successful, the main shaft continues to rotate, driving the moving contact to the closed position. Simultaneously, the main shaft again drives the transmission mechanism to rotate the precharge moving contact from the precharge closed position to the precharge open position. During the rotation of the main shaft along a second direction opposite to the first direction to rotate the moving contact from the closed position to the open position, the main shaft can drive the moving contact to rotate through the transmission mechanism to reach the open position. This patent describes a mechanism that connects the main shaft of the circuit breaker to the pre-charge moving contact of the pre-charge switch. This mechanism allows the pre-charge spring to close before the main shaft rotates to the closing position in the first direction (closing direction) and to open before the main shaft rotates to the opening position in the second direction (opening direction). The patent does not show the specific structure of the circuit breaker, only a portion of the pre-charge switch structure, which includes a pre-charge spring. However, those skilled in the art will understand that the circuit breaker also includes a circuit breaker spring to enable rapid opening and closing of the circuit breaker moving contact via a snap-action mechanism. Therefore, in the aforementioned prior art, during the entire rotation of the main shaft in the first and second directions, the pivoting driving force of the main shaft needs to simultaneously drive the circuit breaker spring and the pre-charge spring to store energy, requiring a significant pivoting driving force from the main shaft. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this application provides a fusion switch.

[0004] To achieve the above objectives, the technical solution of this application is as follows: A fusion switch includes: a main circuit drive shaft, which is rotatable and has a closed position and an open position; a precharge circuit drive shaft, which is rotatable and has a closed position and an open position; a drive device having a power shaft, wherein a first transmission assembly is provided between the power shaft and the main circuit drive shaft and a second transmission assembly is provided between the power shaft and the precharge circuit drive shaft, the first transmission assembly includes a first one-way clutch engagement structure, and the second transmission assembly includes a second one-way clutch engagement structure; under the action of the first one-way clutch engagement structure and the second one-way clutch engagement structure, when the power shaft is driven to rotate in a first rotation direction, the main circuit drive shaft remains stationary and, in at least a portion of the rotation path, the precharge circuit drive shaft rotates synchronously with the power shaft; when the power shaft is driven to rotate in a second rotation direction, the precharge circuit drive shaft remains stationary and, in at least a portion of the rotation path, the main circuit drive shaft rotates synchronously with the power shaft; the first rotation direction is opposite to the second rotation direction.

[0005] Furthermore, the first one-way clutch engagement structure includes a main circuit drive wheel, which is driven and coupled with the power shaft to form a linkage. The main circuit drive wheel has a central hole through which the main circuit drive shaft passes, and a first mating groove is provided in the circumferential wall of the central hole. The two ends of the inner wall of the first mating groove are a first engagement surface and a first separation surface, respectively. The outer circumference of the main circuit drive shaft has a radially arranged first mounting groove, which is provided with a first clutch element and a first elastic element. The first elastic element exerts an outward thrust on the first clutch element, keeping it in contact with the circumferential wall of the central hole of the main circuit drive wheel. The first engagement surface and the first clutch element cooperate to form a one-way linkage relationship between the main circuit drive wheel and the first clutch element. The first separation surface and the first clutch element cooperate to exert a force on the first clutch element that overcomes the thrust of the first elastic element. The second one-way clutch engagement structure includes a pre-charge circuit drive wheel, which is driven by a power shaft to form a linkage. The pre-charge circuit drive wheel has a central hole through which the pre-charge circuit drive shaft passes, and a second mating groove is provided in the circumferential wall of the central hole. The two ends of the inner wall of the second mating groove are a second engagement surface and a second separation surface, respectively. The outer circumference of the pre-charge circuit drive shaft has a radially arranged second mounting groove. The second mounting groove is provided with a second clutch element and a second elastic element. The second elastic element exerts an outward thrust on the second clutch element, keeping it in contact with the circumferential wall of the central hole of the pre-charge circuit drive wheel. The second engagement surface and the second clutch element cooperate to form a one-way linkage relationship between the pre-charge circuit drive wheel and the second clutch element. The second separation surface and the second clutch element cooperate to exert a force on the second clutch element that overcomes the thrust of the second elastic element.

[0006] Furthermore, the outer circumferences of the main circuit drive wheel and the precharge circuit drive wheel are gears, and an output wheel is provided between the main circuit drive wheel and the precharge circuit drive wheel. The output wheel is a gear whose outer circumference meshes with the main circuit drive wheel and the precharge circuit drive wheel simultaneously. The output wheel is driven by the power shaft to form a linkage. The relative directions of the first engagement surface and the first separation action surface are opposite to the relative directions of the second engagement surface and the second separation action surface.

[0007] Furthermore, the first separation surface is a helical variable-diameter arc surface, the first mating surface is a plane and connected to the larger radius end of the first separation surface, and the smaller radius end of the first separation surface has the same radius as the smaller radius end of the first mating surface; there are two first mating grooves that are concentrically symmetrical with respect to the central axis of the main circuit drive wheel, and the two first mating grooves are transitioned by a cylindrical curved surface adapted to the outer peripheral wall of the main circuit drive shaft; the second separation surface is a helical variable-diameter arc surface, the second mating surface is a plane and connected to the larger radius end of the second separation surface, and the smaller radius end of the second separation surface has the same radius as the smaller radius end of the second mating surface; there are two second mating grooves that are concentrically symmetrical with respect to the central axis of the pre-charge circuit drive wheel, and the two second mating grooves are transitioned by a cylindrical curved surface adapted to the outer peripheral wall of the pre-charge circuit drive shaft.

[0008] Furthermore, the central axes of both the main circuit drive shaft and the precharge circuit drive shaft are arranged along a third direction Z; one end of the main circuit drive shaft is provided with a main circuit drive sliding assembly, which includes a second slider and a second guide rail that limits the linear sliding of the second slider along the second direction Y; the lower end of the main circuit drive shaft is connected to a first rotating arm that rotates synchronously with it; the second slider is provided with a second sliding groove arranged along the first direction X; the outer end of the first rotating arm is provided with a roller that extends into the second sliding groove; the circumferential rotation of the main circuit drive shaft drives the second slider to reciprocate linearly along the second direction Y. Linear sliding; one end of the precharge circuit drive shaft is provided with a precharge circuit drive sliding assembly, the precharge circuit drive sliding assembly includes a fourth slider and a fourth guide rail that limits the linear sliding of the fourth slider along the second direction Y. The lower end of the precharge circuit drive shaft is connected to a second rotating arm that rotates synchronously with it. The fourth slider is provided with a fourth sliding groove arranged along the first direction X. The outer end of the second rotating arm is provided with a roller that extends into the fourth sliding groove. The circumferential rotation of the precharge circuit drive shaft drives the fourth slider to reciprocate linearly along the second direction Y; the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0009] Furthermore, it includes a main circuit switching mechanism and a pre-charge circuit switching mechanism; the main circuit switching mechanism includes a first multi-link mechanism with an energy storage component, the first multi-link mechanism with an energy storage component includes a first arc-shaped motion input end, the rotation center axis of the first arc-shaped motion input end is arranged along a first direction X; the second slider and the first arc-shaped motion input end form a linkage engagement along a second direction Y; the pre-charge circuit switching mechanism includes a second multi-link mechanism with an energy storage component, the second multi-link mechanism includes a second arc-shaped motion input end, the rotation center axis of the second arc-shaped motion input end is arranged along a first direction X; the fourth slider and the second arc-shaped motion input end form a linkage engagement along a second direction Y.

[0010] Furthermore, the first multi-link mechanism with energy storage component includes a first jump fastener, a first locking fastener, and a first energy storage spring. The first locking fastener has a locked position where it engages with the first jump fastener to store energy in the first energy storage spring, and an unlocked position where it releases the engagement with the jump fastener to release energy in the first energy storage spring. In the unlocked state, the release of energy from the first energy storage spring drives the first multi-link mechanism with energy storage component to trip and open the circuit. A main circuit electromagnetic trip unit is provided, which cooperates with the first locking fastener to drive the first locking fastener to switch to the unlocked position. The second multi-link mechanism with energy storage includes a second jump fastener, a second locking fastener, and a second energy storage spring. The second locking fastener has a locked position that engages with the second jump fastener to store energy in the second energy storage spring, and an unlocked position that releases the engagement of the second jump fastener to release energy in the second energy storage spring. In the unlocked state, the energy release of the second energy storage spring drives the second multi-link mechanism with energy storage to perform a tripping and opening action. A pre-charge circuit electromagnetic trip unit is provided. The pre-charge circuit electromagnetic trip unit cooperates with the second locking fastener to drive the second locking fastener to switch to the unlocked position.

[0011] Furthermore, the main circuit electromagnetic trip unit includes a first electromagnetic push block, which cooperates with a first locking element. When the main circuit electromagnetic trip unit receives a signal, the first electromagnetic push block moves the first locking element from the locked position to the unlocked position. The first electromagnetic push block is provided with a first reset push rod extending to one side of the second slider, which cooperates with the main circuit drive shaft located at the tripped opening position to rotate and reset the main circuit electromagnetic trip unit. The rotation of the main circuit drive shaft can also re-engage the main circuit free trip mechanism. The precharge circuit electromagnetic trip unit includes a second electromagnetic push block, which cooperates with a second locking element. When the precharge circuit electromagnetic trip unit receives a tripping signal, the second electromagnetic push block moves the second locking element from the locked position to the unlocked position. The second electromagnetic push block is provided with a second reset push rod extending to one side of the fourth slider, which cooperates with the precharge circuit drive shaft located at the tripped opening position to rotate and reset the precharge circuit electromagnetic trip unit. The rotation of the precharge circuit drive shaft can also re-engage the precharge circuit free trip mechanism.

[0012] Furthermore, the driving device is a drive motor, and the power shaft is the output shaft of the drive motor; it includes a control system, which comprises: a closing / opening control signal input unit for receiving a switch closing control signal and a switch opening control signal; a precharge circuit closing control unit for outputting a first drive signal to the drive motor to rotate the drive motor in a first rotation direction until the precharge circuit switch mechanism switches to the closing state; a main circuit closing control unit for outputting a second drive signal to the drive motor to rotate the drive motor in a second rotation direction until the main circuit switch mechanism switches to the closing state, wherein the first rotation direction is opposite to the second rotation direction; a precharge circuit status signal receiving unit for receiving a precharge circuit status signal; a main circuit status signal receiving unit for receiving a main circuit status signal; a second precharge circuit opening control unit for outputting a fifth drive signal to the precharge circuit electromagnetic trip unit; and a second main circuit opening control unit for outputting a sixth drive signal to the main circuit electromagnetic trip unit. The control unit is connected to the circuit breaker control signal input unit, the precharge circuit closing control unit, the main circuit closing control unit, the precharge circuit status signal receiving unit, the main circuit status signal receiving unit, the second precharge circuit opening control unit, and the second main circuit opening control unit. It has a second control mode. In the second control mode, an initial state is set, with both the main circuit free trip mechanism and the precharge circuit free trip mechanism in the tripped open state. In the second control mode, the control unit executes the following process: when the circuit breaker control signal input unit receives the switch closing control signal, the control unit outputs a signal to the precharge circuit closing control unit, driving the motor to rotate in the first rotation direction until the precharge circuit switch mechanism switches to the closed state; when the precharge circuit status signal receiving unit receives the precharge completion signal, the control unit outputs a signal to the main circuit closing control unit, driving the motor to rotate in the second rotation direction until the main circuit switch mechanism switches to the closed state. When the main circuit status signal receiving unit receives a closed main circuit status signal, the central control unit, after a delay or under an external pre-charge command, outputs a signal to the second pre-charge circuit tripping control unit. The pre-charge circuit electromagnetic trip unit is energized and the pre-charge circuit free tripping mechanism performs a tripping action, switching the pre-charge circuit switching device to the tripping tripping state. When the opening and closing control signal input unit receives a switch tripping control signal, the central control unit outputs a signal to the second main circuit tripping control unit. The main circuit electromagnetic trip unit is energized and the main circuit free tripping mechanism performs a tripping action, switching the main circuit switching device to the tripping tripping state.

[0013] Furthermore, the driving device is a drive motor, and the power shaft is the output shaft of the drive motor; it includes a control system, which comprises: a closing / opening control signal input unit for receiving a switch closing control signal and a switch opening control signal; a pre-charge circuit closing control unit for outputting a first drive signal to the drive motor to rotate the drive motor in a first rotation direction until the pre-charge circuit switch mechanism switches to the closing state; a main circuit closing control unit for outputting a second drive signal to the drive motor to rotate the drive motor in a second rotation direction until the main circuit switch mechanism switches to the closing state, wherein the first rotation direction is opposite to the second rotation direction; a pre-charge circuit status signal receiving unit for receiving a pre-charge circuit status signal; a main circuit status signal receiving unit for receiving a main circuit status signal; a first pre-charge circuit opening control unit for outputting a third drive signal to the drive motor to rotate the drive motor in the first rotation direction until the pre-charge circuit switch mechanism switches to the normal opening state; and a first main circuit opening control unit for outputting a fourth drive signal to the drive motor to rotate the drive motor in a first rotation direction until the pre-charge circuit switch mechanism switches to the normal opening state; and a first main circuit opening control unit for outputting a fourth drive signal to the drive motor to rotate the drive motor in a second rotation direction until the pre-charge circuit switch mechanism switches to the normal opening state. The motor rotates in the second rotation direction until the main circuit switch mechanism switches to the open state. The central control unit is connected to the opening and closing control signal input unit, the precharge circuit closing control unit, the main circuit closing control unit, the precharge circuit status signal receiving unit, the main circuit status signal receiving unit, the first precharge circuit opening control unit, and the first main circuit opening control unit. The control system has a first control mode. In the first control mode, an initial state is set, and both the main circuit free trip mechanism and the precharge circuit free trip mechanism are in the normal open state. In the second control mode, the central control unit executes the following process: when the opening and closing control signal input unit receives the switch closing control signal, the central control unit outputs a signal to the precharge circuit closing control unit, driving the motor to rotate in the first rotation direction until the precharge circuit switch mechanism switches to the closed state; when the precharge circuit status signal receiving unit receives the precharge completion signal, the central control unit outputs a signal to the main circuit closing control unit, driving the motor to rotate in the second rotation direction until the main circuit switch mechanism switches to the closed state. When the main circuit status signal receiving unit receives a main circuit status signal indicating that the circuit is closed, the central control unit, after a delay or under an external pre-charge closing command, outputs a signal to the first pre-charge circuit opening control unit, driving the motor to rotate in the first rotation direction until the pre-charge circuit switching mechanism switches to the normal opening state; when the opening and closing control signal input unit receives a switch opening control signal, the central control unit outputs a signal to the first main circuit opening control unit, driving the motor to rotate in the second rotation direction until the main circuit switching mechanism switches to the normal opening state.

[0014] The beneficial effects of this application are as follows: By setting up a first one-way clutch engagement structure and a second one-way clutch engagement structure, when the power shaft rotates in the first rotation direction, the main circuit drive shaft remains stationary, while only the pre-charge circuit drive shaft rotates synchronously in part of the rotation path, achieving priority closure of the pre-charge circuit; when the power shaft rotates in the second rotation direction, the pre-charge circuit drive shaft remains stationary, while only the main circuit drive shaft rotates synchronously in part of the rotation path, achieving priority disconnection of the main circuit. This structure avoids the problem in the prior art where the main shaft needs to simultaneously drive the main circuit switch spring and the pre-charge spring to store energy, significantly reducing the pivoting driving force required by the power shaft. At the same time, the one-way clutch mechanism ensures the orderly execution of closing and opening operations, reduces mechanical shock during operation, and improves the reliability and stability of the switch action. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0016] Figure 1 This is a schematic diagram of the structure of a fusion switch provided in one embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the fusion switch after the housing structure is hidden, according to one embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the structure of a fusion switch provided in one embodiment of this application;

[0019] Figure 4 A side view of the drive mechanism in a fusion switch provided in one embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the structure of the electric operating mechanism in a fusion switch provided in one embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of the cavity between the first support plate and the second support plate in a fusion switch provided in one embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the structure of the cavity between the second support plate and the third support plate in a fusion switch provided in one embodiment of this application;

[0023] Figure 8 This is a schematic diagram of the main circuit drive wheel in a fusion switch provided in one embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the main circuit drive shaft in a fusion switch provided in one embodiment of this application;

[0025] Figure 10 A schematic diagram of the first one-way clutch engagement structure and the second one-way clutch engagement structure in a fusion switch provided in an embodiment of this application;

[0026] Figure 11 This is a schematic diagram of the structure of a fusion switch provided in an embodiment of this application, showing the cooperation between the main circuit drive shaft and the first main circuit operation transmission unit and the main circuit electromagnetic trip unit.

[0027] Figure 12 This application provides a fusion switch housing assembly and a main circuit switch mechanism in one embodiment of the present application;

[0028] Figure 13 This application provides a precharge circuit switch housing assembly and a precharge circuit switch mechanism in a fusion switch according to one embodiment;

[0029] Figure 14 This is a schematic diagram of a control system in a fusion switch provided in one embodiment of this application;

[0030] Figure 15 The following is a schematic diagram of the first and second one-way clutch engagement structures in different switching states of the fusion switch provided in an embodiment of this application under the second mode: (a) is the initial state, the precharge circuit is normally open (then deducted and opened), and the main circuit is normally open (then deducted and opened); (b) is the precharge circuit closed state, the precharge circuit is closed again, and the main circuit is normally open (then deducted and opened); (c) is the main circuit closed state, the precharge circuit is closed again, and the main circuit is closed again; (d) is the precharge circuit open state, the precharge circuit is normally open (then deducted and opened), and the main circuit is closed again.

[0031] Figure 16 The following is a schematic diagram of the first and second one-way clutch engagement structures under different switching states in a first mode provided by an embodiment of this application: (a) is the initial state, where the precharge circuit trips and the main circuit trips and opens; (b) is the intermediate state of the precharge circuit closing, where the precharge circuit normally opens (trips and opens again), and the main circuit trips and opens; (c) is the state of the precharge circuit closing, where the precharge circuit re-closes and the main circuit trips and opens; (d) is the intermediate state of the main circuit closing, where the precharge circuit re-closes and the main circuit normally opens (trips and opens again); (e) is the state of the main circuit closing, where the precharge circuit re-closes and the main circuit re-closes; (f) is the state of the precharge circuit opening, where the precharge circuit trips and opens, and the main circuit re-closes.

[0032] Figure 17 This is a schematic diagram of the switching operation flow of the control system in a fusion switch, which is controlled by the power supply, according to one embodiment of this application.

[0033] Figure 18 This is a schematic diagram of the switch operation flow of the control system of the integrated switch under the control of the BMS system in an embodiment of this application, (a) precharge line fault condition, (b) main circuit fault condition, and (c) normal state.

[0034] In the picture,

[0035] 100 - Drive mechanism housing assembly; 120 - Drive mechanism intermediate partition plate; 130 - Drive mechanism bottom cover;

[0036] 200 - Main circuit switch housing assembly; 210 - First transmission housing; 214 - First transmission through hole; 220 - Main circuit switching housing;

[0037] 300 - Precharge circuit housing assembly; 310 - Second transmission housing; 313 - Second transmission through hole; 320 - Precharge circuit on / off housing;

[0038] 400-Drive mechanism, 410-Electric operating mechanism, 411a-First support plate, 411b-Second support plate, 411c-Third support plate, 411d-Fourth support plate, 412-Drive motor, 413-First motor output wheel, 414-Second motor output wheel, 415-Third motor output wheel, 416-Main circuit drive shaft, 416a-Main circuit drive wheel, 416b-First mating groove, 416c-First mating surface, 416d-First separating surface, 416e-First mounting groove, 416f-First sphere, 416g-First elastic element, 416i-First rotating arm, 417-Main circuit drive sliding assembly, 417a-Second slider, 417b-Second guide rail, 4 17c - Second slide groove, 418 - Precharge circuit drive shaft, 418a - Precharge circuit drive wheel, 418b - Second mating groove, 418c - Second mating surface, 418d - Second separation action surface, 418e - Second mounting groove, 418f - Second sphere, 418g - Second elastic action element, 418i - Second rotating arm, 419 - Precharge circuit drive sliding assembly, 419a - Fourth slider, 420 - First main circuit operation transmission unit, 421 - First slider, 422 - First guide rail, 430 - Main circuit electromagnetic trip unit, 431 - First electromagnetic push block, 431a - First reset push rod, 440 - First precharge circuit operation transmission unit, 450 - Precharge circuit electromagnetic trip unit, 460 - Control board;

[0039] 500 - Main circuit switch mechanism; 511 - First arc-shaped motion input end; 512 - First locking element;

[0040] 600 - Precharge circuit switch mechanism, 611 - Second arc-shaped motion input end, 612 - Second locking element. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] In this application, the first direction X, the second direction Y, and the third direction Z are all straight lines and are perpendicular to each other. The first rotation direction is opposite to the second rotation direction, respectively referring to clockwise rotation and counterclockwise rotation, or counterclockwise rotation and clockwise rotation.

[0047] A fusion switch includes a switch housing assembly, such as Figure 1 , Figure 2 As shown, the switch housing assembly includes a drive mechanism housing assembly 100, a main circuit switch housing assembly 200, a precharge circuit housing assembly 300, a drive mechanism 400 housed in the drive mechanism housing assembly 100, a main circuit switch mechanism 500 housed in the main circuit switch housing assembly 200, and a precharge circuit switch mechanism 600 housed in the precharge circuit housing assembly 300. The main circuit switch housing assembly 200 and the precharge circuit housing assembly 300 are connected adjacently along a first direction X. The drive mechanism housing assembly 100 is located on one side of the connected main circuit switch housing assembly 200 and precharge circuit housing assembly 300 along a third direction Z.

[0048] The structures of the drive mechanism housing assembly 100 and the drive mechanism 400 are as follows: Figure 3 As shown, the drive mechanism housing assembly 100 includes a drive mechanism upper cover 110, a drive mechanism intermediate partition 120, and a drive mechanism bottom cover 130. The drive mechanism upper cover 110 and the drive mechanism intermediate partition 120 are connected to form a drive upper chamber, and the drive mechanism intermediate partition 120 and the drive mechanism bottom cover 130 are connected to form a drive lower chamber. The drive mechanism 400 includes an electric operating mechanism 410, a first main circuit operating transmission unit 420, a main circuit electromagnetic trip unit 430, a first pre-charge circuit operating transmission unit 440, and a pre-charge circuit electromagnetic trip unit 450. The electric operating mechanism 410 is fixed above the drive mechanism intermediate partition 120, and the drive mechanism upper cover 110 covers the electric operating mechanism 410. The first main circuit operating transmission unit 420, the main circuit electromagnetic trip unit 430, the first pre-charge circuit operating transmission unit 440, and the pre-charge circuit electromagnetic trip unit 450 are fixed in the drive lower chamber. Meanwhile, a control board 460 for executing switch commands is fixed above the electric operating mechanism 410.

[0049] The electric operating mechanism 410 includes a fixed bracket, a drive motor 412, a first motor output wheel 413, a second motor output wheel 414, a third motor output wheel 415, a main circuit drive shaft 416, a main circuit drive sliding assembly 417, a pre-charge circuit drive shaft 418, and a pre-charge circuit drive sliding assembly 419. Figure 5 As shown, the fixed bracket includes a first support plate 411a, a second support plate 411b, a third support plate 411c, and a fourth support plate 411d arranged sequentially at intervals along the third direction Z, and a connecting column connecting the support plates. The drive motor 412 is fixed through the second support plate 411b, the third support plate 411c, and the fourth support plate 411d, and has an output shaft extending to a position between the first support plate 411a and the second support plate 411b.

[0050] like Figure 6 As shown, the first motor output wheel 413 and the second motor output wheel 414 are disposed between the first support plate 411a and the second support plate 411b, and the two are connected by a first gear transmission group to form a synchronous rotation relationship. The first motor output wheel 413 is sleeved on the output shaft of the drive motor 412 and is directly driven to rotate by the drive motor 412. The first support plate 411a and the second support plate 411b form a speed-regulating transmission gear cavity for the output of the drive motor 412.

[0051] The central axes of the main circuit drive shaft 416 and the precharge circuit drive shaft 418 are both arranged along the third direction Z and are fixed through the first support plate 411a, the second support plate 411b, and the third support plate 411c. The main circuit drive shaft 416 and the precharge circuit drive shaft 418 are located on both sides of the second motor output wheel 414, and are respectively connected to the second motor output wheel 414 through a second gear transmission group and a third gear transmission group. The second gear transmission group and the third gear transmission group are fixed between the second support plate 411b and the third support plate 411c. Specifically, as shown... Figure 7 As shown, the second motor output wheel 414 and the third motor output wheel 415 rotate synchronously. The main circuit drive shaft 416 and the pre-charge circuit drive shaft 418 are respectively provided with a main circuit drive wheel 416a and a pre-charge circuit drive wheel 418a. The main circuit drive wheel 416a and the pre-charge circuit drive wheel 418a are located on both sides of the third motor output wheel 415 and mesh with the third motor output wheel 415 to form synchronous rotation.

[0052] The main circuit drive shaft 416 and the main circuit drive wheel 416a are engaged by a first one-way clutch mechanism. When the main circuit drive wheel 416a rotates in one direction, they are engaged, driving the main circuit drive shaft 416 to rotate. When the main circuit drive wheel 416a rotates in the opposite direction, they are disengaged, preventing the main circuit drive shaft 416 from rotating. Similarly, the pre-charge circuit drive shaft 418 and the pre-charge circuit drive wheel 418a are engaged by a second one-way clutch mechanism. When the pre-charge circuit drive wheel 418a rotates in one direction, they are engaged, driving the pre-charge circuit drive shaft 418 to rotate. When the pre-charge circuit drive wheel 418a rotates in the opposite direction, they are disengaged, preventing the pre-charge circuit drive shaft 418 from rotating. Furthermore, the first and second one-way clutch engagement structures have opposite clutch directions, ensuring that when the third motor output wheel 415 rotates in the first rotation direction, it can drive the pre-charge circuit drive shaft 418 to rotate but cannot drive the main circuit drive shaft 416 to rotate. Conversely, when the third motor output wheel 415 rotates in the second rotation direction, which is opposite to the first rotation direction, it can drive the main circuit drive shaft 416 to rotate but cannot drive the pre-charge circuit drive shaft 418 to rotate. Through this structural arrangement, the rotation of the main circuit drive shaft 416 and the pre-charge circuit drive shaft 418 can be controlled by the forward and reverse rotation of a single drive motor.

[0053] The first one-way clutch engagement structure and the second one-way clutch engagement structure have the same structure. Taking the first one-way clutch engagement structure as an example, as follows: Figure 8 As shown, the main circuit drive wheel 416a has a first mating groove 416b on the outer periphery of its central hole. The two ends of the inner wall of the first mating groove 416b are a first mating surface 416c and a first separation surface 416d, respectively. Figure 9 As shown, the main circuit drive shaft 416 has a radially arranged first mounting groove 416e on its outer periphery, such as... Figure 10 As shown, the first mounting groove 416e is provided with a first ball 416f and a first elastic member 416g. The first elastic member 416g exerts an outward thrust on the first ball 416f, keeping it in contact with the circumferential wall of the center hole of the main circuit drive wheel 416a. Figure 10As shown, when the main circuit drive wheel 416a and the precharge circuit drive wheel 418a are rotated clockwise, the first ball 416f engages with the first mating surface 416c, causing the main circuit drive shaft 416 to rotate clockwise with the main circuit drive wheel 416a. The second ball 418f engages with the second separation surface 418d, causing the second ball 418f to retract inward, thus preventing the precharge circuit drive shaft 418 from rotating clockwise with the precharge circuit drive wheel 418a. When the main circuit drive wheel 416a and the precharge circuit drive wheel 418a are rotated counterclockwise, the second ball 418f engages with the second mating surface 418c, causing the second ball 418f to retract inward, thus preventing the precharge circuit drive shaft 418 from rotating counterclockwise with the precharge circuit drive wheel 418a. The second ball 416f engages with the first separation surface 416d, thus preventing the main circuit drive shaft 416 from rotating counterclockwise with the main circuit drive wheel 416a.

[0054] Furthermore, the first separation surface 416d is a spiral variable diameter arc surface, the first mating surface 416c is a plane and connected to the larger radius end of the first separation surface 416d, the smaller radius end of the first separation surface 416d and the smaller radius end of the first mating surface 416c have the same radius, the first mating groove 416b is provided in two and is concentrically symmetrical with respect to the central axis of the main circuit drive wheel 416a, and the two first mating grooves 416b are transitioned by a cylindrical curved surface adapted to the outer peripheral wall of the main circuit drive shaft 416. The second separation surface is a spiral variable diameter arc surface. The second mating surface 418c is a plane and is connected to the larger radius end of the second separation surface. The smaller radius end of the second separation surface 418d is equal to the smaller radius end of the second mating surface 418c. There are two second mating grooves 418b, which are concentrically symmetrical with respect to the central axis of the precharge circuit drive wheel 418a. The two second mating grooves 418b are connected by a cylindrical curved surface adapted to the outer peripheral wall of the precharge circuit drive shaft 418.

[0055] like Figure 12 As shown, the main circuit switch housing assembly 200 is provided with a first transmission housing 210 and a main circuit switching housing 220 in sequence along the first direction X. The main circuit switch mechanism 500 includes a main circuit free tripping mechanism located in the first transmission housing 210 and a main circuit switching device located in the main circuit switching housing 220. The first transmission housing 210 is provided with a first transmission through hole 214 opened along the second direction Y on the side near the drive mechanism housing assembly 100.

[0056] The main circuit free release mechanism includes a first multi-link mechanism with an energy storage component. The first multi-link mechanism with an energy storage component includes a first arc-shaped motion input end 511 and a first rotary motion output end. The rotation center axis of the first arc-shaped motion input end 511 and the rotation center axis of the first rotary motion output end are both arranged along the first direction X. The first arc-shaped motion input end cooperates with the drive mechanism 400 in the drive mechanism housing assembly 100 through the first transmission through hole 214.

[0057] The first multi-link mechanism with energy storage includes a first input arm, an upper link, a lower link, an output shaft, a first jump fastener, a first locking fastener 512, and a first energy storage spring. The first locking fastener 512 has a locked position and an unlocked position: in the locked position, it engages with the first jump fastener, storing energy in the first energy storage spring; in the unlocked position, it releases the engagement with the first jump fastener, releasing energy from the first energy storage spring. When the first locking fastener 512 is in the locked position, the first multi-link mechanism with energy storage has a closed state and a normal open (re-delayed open) state, meaning that driving the first arc-shaped motion input end 511 allows the first multi-link mechanism with energy storage to switch between the closed state and the normal open (re-delayed open) state; when the first locking fastener 512 is in the unlocked position, the release of energy from the first energy storage spring drives the first multi-link mechanism with energy storage to perform a tripping open action, switching the first multi-link mechanism with energy storage to the tripping open state. Specifically, the mating structure of the first input arm, upper connecting rod, lower connecting rod, output shaft, jump fastener, first locking fastener 512, and first energy storage spring is largely the same as that in the applicant's earlier application CN202422239960.5, and will not be described in detail here.

[0058] The first main circuit operation transmission unit 420 and the main circuit electromagnetic trip unit 430 are respectively engaged with the first arc-shaped motion input terminal 511 and the first locking member 512 through the first transmission through hole 214. Specifically, as shown... Figure 11 As shown, the first main circuit operation transmission unit 420 includes a first slider 421 and a first guide rail 422 that limits the linear sliding of the first slider 421. The first slider 421 moves linearly along the second direction Y on the first guide rail 422. The first slider 421 is inserted into and cooperates with the first arc-shaped motion input end 511, thereby driving the first arc-shaped motion input end 511 to move in an arc shape on a plane perpendicular to the first direction X. The main circuit electromagnetic trip unit 430 includes a first electromagnetic push block 431, which cooperates with the first locking member 512. When the main circuit electromagnetic trip unit 430 receives a signal, the first electromagnetic push block 431 actuates to move the first locking member 512 from the locked position to the unlocked position.

[0059] The first main circuit operation transmission unit 420, the main circuit electromagnetic trip unit 430, and the main circuit drive shaft 416 are connected by a transmission mechanism via a main circuit drive sliding assembly 417. Specifically, the main circuit drive sliding assembly 417 includes a second slider 417a and a second guide rail 417b that limits the linear sliding movement of the second slider 417a. The lower end of the main circuit drive shaft 416 is connected to a synchronously rotating first rotating arm 416i. The second slider 417a is provided with a second sliding groove 417c arranged along the first direction X. The outer end of the first rotating arm 416i is provided with a transmission wheel that extends into the second sliding groove 417c. The rotation of the main circuit drive shaft 416 drives the first slider 421 to slide along the first direction X. The second slider 417a and the first slider 421 are linked and cooperate. At the same time, the first electromagnetic push block 431 is provided with a first reset push rod 431a extending to one side of the second slider 417a. It is used to drive the main circuit drive shaft 416 to perform a closing action through the electric operating mechanism 410, thereby resetting the main circuit electromagnetic trip unit 430 and re-closing the main circuit free trip mechanism. Through the cooperation of the first rotating arm 416i and the second slide groove 417c, the main circuit drive shaft 416 can drive the second slider 417a to complete a reciprocating sliding action along the first direction X by rotating the shaft 416 in only one rotation direction. The two ends of the second slider 417a sliding linearly along the first direction X correspond to the closing state and normal opening (re-closing opening) of the first multi-link mechanism with energy storage device, respectively. Therefore, the main circuit drive shaft 416 can drive the first multi-link mechanism with energy storage device to complete two switching actions between the closing state and normal opening by rotating the shaft 416 in only one rotation direction. In the closed state, the angle of the first rotating arm 416i is not completely vertical, but slightly tilted. The tilting method is consistent with the tripping action driving direction, so as to avoid the second slider 417a sliding and causing the main circuit drive shaft 416 to rotate in the opposite direction to the preset direction, thus avoiding interference with the electric drive mechanism.

[0060] The precharge circuit housing assembly 300 is provided with a second transmission housing 310 and a precharge circuit switching housing 320 in sequence along the first direction X. The precharge circuit switching mechanism 600 includes a precharge circuit free tripping mechanism located in the second transmission housing 310 and a precharge circuit switching device located in the precharge circuit switching housing 320. The second transmission housing 310 is provided with a second transmission through hole 313 opened along the second direction Y on the side near the drive mechanism housing assembly 100.

[0061] like Figure 13As shown, the precharge circuit free release mechanism includes a second multi-link mechanism with an energy storage component. The second multi-link mechanism with an energy storage component includes a second arc-shaped motion input end 611 and a second rotational motion output end. The rotation center axis of the second arc-shaped motion input end 611 and the rotation center axis of the second rotational motion output end are both arranged along the first direction X. The second arc-shaped motion input end 611 cooperates with the drive mechanism 400 in the drive mechanism housing assembly 100 through the second transmission through hole 313.

[0062] The second multi-link mechanism with energy storage includes a second input arm, an upper link, a lower link, an output shaft, a second jump fastener, a second locking fastener 612, and a second energy storage spring. The second locking fastener 612 has a locked position and an unlocked position: in the locked position, it engages with the second jump fastener, causing the second energy storage spring to store energy; in the unlocked position, it releases the engagement with the second jump fastener, causing the second energy storage spring to release energy. Similarly, the second multi-link mechanism with energy storage has a closed state, a normal open (re-tripped open) state, and a tripped open state. Specifically, the cooperation structure of the second input arm, upper link, lower link, output shaft, jump fastener, second locking fastener 612, and second energy storage spring is largely the same as that in the applicant's earlier application CN202422239960.5, and will not be described in detail here.

[0063] The first precharge circuit operation transmission unit 440 and the precharge circuit electromagnetic trip unit 450 are respectively engaged with the second arc-shaped motion input end 611 and the second locking member 612 through the second transmission through hole 313. Specifically, the first precharge circuit operation transmission unit 440 includes a third slider and a third guide rail that limits the linear sliding of the third slider. The third slider moves linearly along the second direction Y on the third guide rail. The third slider is inserted into the second arc-shaped motion input end 611, thereby driving the second arc-shaped motion input end 611 to move in an arc shape on a plane perpendicular to the first direction X. The precharge circuit electromagnetic trip unit 450 includes a second electromagnetic push block, which engages with the second locking member. When the precharge circuit electromagnetic trip unit 450 receives a signal, the second electromagnetic push block moves, causing the second locking member 612 to move from the locked position to the unlocked position.

[0064] The first precharge circuit operation transmission unit 440, the precharge circuit electromagnetic trip unit 450, and the precharge circuit drive shaft 418 are connected by a precharge circuit drive sliding assembly 419. The specific connection structure is the same as that between the first main circuit operation transmission unit 420, the main circuit electromagnetic trip unit 430, the main circuit drive shaft 416, and the main circuit drive sliding assembly 417, and will not be described in detail here.

[0065] The control board integrates a control system, such as Figure 14 As shown, it includes:

[0066] The circuit breaker closing and opening control signal input unit is used to receive switch closing control signals and switch opening control signals.

[0067] A precharge circuit status signal receiving unit is used to receive the precharge circuit status signal;

[0068] The main circuit status signal receiving unit is used to receive the main circuit status signal;

[0069] The precharge circuit closing control unit is used to output a first drive signal to the drive motor 412 to drive the drive motor 412 to rotate in the first rotation direction until the precharge circuit switching mechanism 600 switches to the closing state.

[0070] The main circuit closing control unit is used to output a second drive signal to the drive motor 412 to drive the drive motor 412 to rotate in the second rotation direction until the main circuit switching mechanism 500 switches to the closing state.

[0071] The first precharge circuit tripping control unit is used to output a third drive signal to the drive motor 412 to drive the drive motor 412 to rotate in the first rotation direction until the precharge circuit switching mechanism 600 switches to the normal tripping (re-tripping) state.

[0072] The first main circuit tripping control unit is used to output a fourth drive signal to the drive motor 412 to drive the drive motor 412 to rotate in the second rotation direction until the main circuit switching mechanism 500 switches to the normal tripping (re-tripping) state.

[0073] The central control unit is connected to the opening and closing control signal input unit, the precharge circuit closing control unit, the main circuit closing control unit, the precharge circuit status signal receiving unit, the main circuit status signal receiving unit, the first precharge circuit opening control unit, and the first main circuit opening control unit;

[0074] The control system has a first control mode. In the first control mode, an initial state is set, where both the main circuit free trip mechanism and the precharge circuit free trip mechanism are in a normal tripping (re-tripping) state. At this time, the states of the first one-way clutch engagement structure, the second one-way clutch engagement structure, the main circuit drive sliding component, and the precharge circuit drive sliding component are as follows: Figure 15 As shown in (a), and in the first control mode, the central control unit executes the following process:

[0075] When the opening and closing control signal input unit receives the switch closing control signal, the central control unit outputs a signal to the precharge circuit closing control unit. The drive motor 412 rotates in the first rotation direction, controlling the precharge circuit drive shaft 418 to rotate, causing the precharge circuit free trip mechanism to complete the closing action. The precharge circuit switch mechanism 600 switches to the closing state. At the same time, under the action of the first one-way clutch engagement structure, the main circuit drive shaft 416 remains stationary, and the main circuit switch mechanism 500 maintains the normal opening (re-clutching) state. At this time, the states of the second one-way clutch engagement structure, the main circuit drive sliding component, and the precharge circuit drive sliding component are as follows: Figure 15 As shown in (b); at this time, the precharge circuit is energized to form a temporary path for controlled charging of the downstream capacitive load, avoiding damage to the equipment from the surge current at the moment of power-on;

[0076] When the precharge circuit status signal receiving unit receives the precharge completion signal, the central control unit outputs a signal to the main circuit closing control unit, driving the drive motor 412 to rotate in the second rotation direction, controlling the main circuit drive shaft 416 to rotate, causing the main circuit free trip mechanism to complete the closing action, and the main circuit switch mechanism 500 switches to the closed state. Simultaneously, under the action of the second one-way clutch engagement structure, the precharge circuit drive shaft 418 remains stationary, and the precharge circuit switch mechanism 600 maintains the closed state. At this time, the states of the second one-way clutch engagement structure, the main circuit drive sliding component, and the precharge circuit drive sliding component are as follows: Figure 15 As shown in (c);

[0077] When the main circuit status signal receiving unit receives a closed main circuit status signal, the central control unit outputs a signal to the second precharge circuit tripping control unit. The drive motor 412 rotates in the first rotation direction, controlling the precharge circuit drive shaft 418 to rotate, causing the precharge circuit free tripping mechanism to complete the tripping action. The precharge circuit switch mechanism 600 switches to the normal tripping (re-tripping) state. At this time, the main circuit switch mechanism 500 remains closed. The states of the second one-way clutch engagement structure, the main circuit drive sliding assembly, and the precharge circuit drive sliding assembly are as follows: Figure 15 As shown in (d);

[0078] When the opening and closing control signal input unit receives the switch opening control signal, the central control unit outputs a signal to the second main circuit opening control unit, and the drive motor 412 rotates in the second rotation direction to control the main circuit drive shaft 416 to rotate, so that the main circuit free trip mechanism completes the opening action. The main circuit switch mechanism 500 switches to the normal opening (re-delay opening) state. At the same time, under the action of the second one-way clutch engagement structure, the precharge circuit drive shaft 418 remains stationary, and the precharge circuit switch mechanism 600 maintains the normal opening (re-delay opening) state.

[0079] In the above process, the rotation angle controlled by the drive motor 412 at each stage can be set based on a preset program, or the time to stop driving can be determined based on the precharge circuit status signal and the main circuit status signal received by the precharge circuit status signal receiving unit and the main circuit status signal receiving unit.

[0080] Furthermore, it includes a power module for connecting to a power supply. The power module is a DC-DC power module used to adapt the external power supply output to the system's low-voltage power supply.

[0081] The opening and closing control signals include power on / off signals. When the power module is connected to the power supply, it is the closing control signal; when the power module is disconnected from the power supply, it is the opening control signal.

[0082] In some embodiments of this application, the system uses only whether the power module is energized as the switch closing control signal and switch opening control signal. The opening and closing control signal input unit is the power module, which powers the system as a power input module. At the same time, whether the power module is energized is also used as the control signal input for whether the switch performs opening and closing actions.

[0083] In some embodiments of this application, the system uses only BMS control signals as the switch closing and opening control signals. The switch closing and opening control signal input unit is a BMS (Battery Management System) signal receiving module, which is connected to the Battery Management System (BMS) and used to receive control signals from the BMS, including switch closing and opening control signals. The power module only serves as a power input module to supply power to the system.

[0084] In some embodiments of this application, the control system includes:

[0085] The second precharge circuit tripping control unit is used to output the fifth drive signal to the precharge circuit electromagnetic trip unit 450;

[0086] The second main circuit tripping control unit is used to output the sixth drive signal to the main circuit electromagnetic trip unit 430;

[0087] The central control unit is connected to the second pre-charge circuit tripping control unit and the second main circuit tripping control unit.

[0088] The control system has a second control mode. In the second control mode, an initial state is set, with both the main circuit free trip mechanism and the precharge circuit free trip mechanism in the tripped open state. At this time, the states of the first one-way clutch engagement structure, the second one-way clutch engagement structure, the main circuit drive sliding component, and the precharge circuit drive sliding component are as follows: Figure 16 As shown in (a), and in the second control mode, the central control unit executes the following process:

[0089] When the opening and closing control signal input unit receives the switch closing control signal, the central control unit outputs a signal to the pre-charge circuit closing control unit, driving the motor 412 to rotate in the first rotation direction, controlling the pre-charge circuit drive shaft 418 to rotate. Figure 16 As shown in (b), the precharge circuit free-release mechanism completes the re-clamping action, and then as follows: Figure 16 As shown in (c), the rotation continues to complete the closing action, causing the precharge circuit switch mechanism 600 to switch to the closed state. At the same time, under the action of the first one-way clutch engagement structure, the main circuit drive shaft 416 remains stationary, and the main circuit switch mechanism 500 remains in the tripped open state. At this time, the precharge circuit is energized to form a temporary path for controlled charging of the downstream capacitive load, avoiding damage to the equipment from the surge current at the moment of power-on.

[0090] When the precharge circuit status signal receiving unit receives the precharge completion signal, the central control unit outputs a signal to the main circuit closing control unit, driving the motor 412 to rotate in the second rotation direction, controlling the main circuit drive shaft 416 to rotate. Figure 16 As shown in (d), the main circuit free-release mechanism completes the re-locking action, and then as follows: Figure 16 As shown in (e), the rotation continues to complete the closing action, the main circuit switch mechanism 500 switches to the closed state, and at the same time, under the action of the second one-way clutch engagement structure, the precharge circuit drive shaft 418 remains stationary, and the precharge circuit switch mechanism 600 maintains the closed state.

[0091] When the main circuit status signal receiving unit receives a closed main circuit status signal, the central control unit outputs a signal to the first pre-charge circuit tripping control unit. The pre-charge circuit electromagnetic trip unit 450 is energized and actuates, and the pre-charge circuit free tripping mechanism performs a tripping action. Figure 16 As shown in (f), the precharge circuit switching device is switched to the tripped state, at which time the main circuit switching mechanism 500 remains in the closed state;

[0092] When the opening and closing control signal input unit receives the switch opening control signal, the central control unit outputs a signal to the first main circuit opening control unit, the main circuit electromagnetic trip unit 430 is energized and the main circuit free trip mechanism performs a trip opening action, so that the main circuit switching device switches to the trip opening state, that is, returns to the initial state.

[0093] In some embodiments of this application, the control system has a third control mode, namely a manual tripping mode. Manually driving the main circuit drive shaft 416 in a second rotational direction switches the main circuit switch mechanism 500, which is in the closed state, to a normal tripping (re-tripping) state. Similarly, manually driving the precharge circuit drive shaft 418 in a first rotational direction switches the precharge circuit switch mechanism 600, which is in the closed state, to a normal tripping (re-tripping) state. This third control mode is used for emergency manual disconnection in case of a fault. In the first and second one-way clutch engagement structures, manually driving the main circuit drive shaft 416 and the precharge circuit drive shaft 418 will not drive the main circuit drive wheel 416a and the precharge circuit drive wheel 418a, and correspondingly, will not drive the motor output transmission gear assembly meshed by the main circuit drive wheel 416a and the precharge circuit drive wheel 418a.

[0094] Furthermore, a manual / electric switching module is provided. This module outputs a signal to de-energize the drive motor 412 and prevent it from starting during manual operation, thus avoiding accidental starting of the drive motor 412 and potential damage to the operating shaft. Specifically, the manual / electric switching module can be a microswitch.

[0095] In some embodiments of this application, the control system has a fourth control mode for tripping in case of a fault. The first precharge circuit tripping control unit and / or the second precharge circuit tripping control unit operate based on a precharge circuit fault signal, achieving tripping of the precharge circuit switching mechanism at 600°. The first main circuit tripping control unit and / or the second main circuit tripping control unit operate based on a main circuit fault signal, achieving tripping of the main circuit switching mechanism at 500°. Specifically, the precharge circuit fault signal and the main circuit fault signal can be a precharge circuit tripping command and a main circuit tripping command issued by the battery management system (BMS) based on the fault results detected by its built-in circuit fault detection module. Alternatively, in the system of this application, corresponding circuit fault detection modules can be installed for the main circuit and the precharge circuit respectively, and when a corresponding circuit fault is detected, a corresponding tripping command can be issued.

[0096] In some embodiments of this application, the second pre-charge circuit tripping control unit and the second main circuit tripping control unit are respectively integrated with a first energy storage element and a second energy storage element for releasing electrical energy; a power failure detection module is provided to detect the voltage status of the power supply connected to the system; when the power failure detection module detects a power failure, the first energy storage element and / or the second energy storage element supply power to the pre-charge circuit electromagnetic trip unit and / or the main circuit electromagnetic trip unit, so that the pre-charge circuit electromagnetic trip unit 450 and the main circuit electromagnetic trip unit 430 can be energized and operated when the system is powered off. Specifically, after the entire closing action is completed, the main circuit is closed and the pre-charge circuit is opened, so it can be set to send a signal only to the main circuit tripping control unit to discharge the second energy storage element to achieve the purpose of electromagnetic drive tripping. There is a certain probability of power failure occurring in the intermediate state between the main circuit closing and the pre-charge circuit closing. Therefore, a signal is simultaneously sent to both the pre-charge circuit tripping control unit and the main circuit tripping control unit, energizing both the pre-charge circuit electromagnetic trip unit and the main circuit electromagnetic trip unit for tripping action. This method is safer. Alternatively, the corresponding module can be selected to send the signal based on the check results of whether the main circuit switch and the pre-charge circuit switch are properly closed. In some embodiments of this application, the first energy storage element and the second energy storage element store electrical energy when the power module is energized, and the stored electrical energy is sufficient to satisfy one operation of the pre-charge circuit electromagnetic trip unit 450 and the main circuit electromagnetic trip unit 430. Specifically, the first energy storage element and the second energy storage element are respectively capacitors.

[0097] In some embodiments of this application, the fault detection action for the precharge circuit is performed after the precharge circuit switch mechanism 600 is closed and before the main circuit switch mechanism 500 is closed. When a fault is detected in the precharge circuit, the precharge circuit switch mechanism 600 is directly opened and the main circuit switch mechanism 500 is no longer closed.

[0098] In some embodiments of this application, a main circuit closing delay module is provided. When the precharge circuit status signal receiving unit receives the precharge completion signal, after the main circuit closing delay module delays the signal, the main circuit closing control unit outputs a second drive signal to the drive motor 412.

[0099] In some embodiments of this application, a precharge circuit tripping delay module is provided. When the main circuit status signal receiving unit receives the main circuit status signal as closed, after the delay by the precharge circuit tripping delay module, the first precharge circuit tripping control unit outputs a third drive signal to the precharge circuit electromagnetic trip unit 450 to switch the precharge circuit switching mechanism 600 to the tripping tripping state, or the second precharge circuit tripping control unit outputs a fifth drive signal to the drive motor 412 to switch the precharge circuit switching mechanism 600 to the normal tripping (re-tripping) state.

[0100] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fusion switch, characterized by, include: The main circuit drive shaft is rotatable and has a closed position and an open position; The precharge circuit drive shaft is rotatable and has a closed position and an open position; A drive device has a power shaft, a first transmission assembly is provided between the power shaft and the main circuit drive shaft and a second transmission assembly is provided between the power shaft and the pre-charge circuit drive shaft, the first transmission assembly includes a first one-way clutch engagement structure, and the second transmission assembly includes a second one-way clutch engagement structure. Under the action of the first one-way clutch engagement structure and the second one-way clutch engagement structure, when the power shaft is driven to rotate in the first rotation direction, the main circuit drive shaft remains stationary and, in at least part of the rotation path, the pre-charge circuit drive shaft rotates synchronously with the power shaft; when the power shaft is driven to rotate in the second rotation direction, the pre-charge circuit drive shaft remains stationary and, in at least part of the rotation path, the main circuit drive shaft rotates synchronously with the power shaft. The first rotation direction is opposite to the second rotation direction; The first one-way clutch engagement structure includes a main circuit drive wheel, which is driven by a power shaft to form a linkage. The main circuit drive wheel has a central hole through which the main circuit drive shaft passes, and a first engagement groove is provided in the circumferential wall of the central hole. The two ends of the inner wall of the first engagement groove are a first engagement surface and a first separation surface, respectively. The outer circumference of the main circuit drive shaft has a radially arranged first mounting groove. The first mounting groove is provided with a first clutch element and a first elastic element. The first elastic element exerts an outward thrust on the first clutch element, keeping it in contact with the circumferential wall of the central hole of the main circuit drive wheel. The first engagement surface and the first clutch element cooperate to form a one-way linkage relationship between the main circuit drive wheel and the first clutch element. The first separation surface and the first clutch element cooperate to exert a force on the first clutch element to overcome the thrust of the first elastic element. The second one-way clutch engagement structure includes a pre-charge circuit drive wheel, which is driven by the power shaft to form a linkage. The pre-charge circuit drive wheel has a central hole through which the pre-charge circuit drive shaft passes, and a second mating groove is provided in the circumferential wall of the central hole. The two ends of the inner wall of the second mating groove are a second engagement surface and a second separation surface, respectively. The outer circumference of the pre-charge circuit drive shaft has a radially arranged second mounting groove. The second mounting groove is provided with a second clutch element and a second elastic element. The second elastic element exerts an outward thrust on the second clutch element, keeping it in contact with the circumferential wall of the central hole of the pre-charge circuit drive wheel. The second engagement surface and the second clutch element cooperate to form a one-way linkage relationship between the pre-charge circuit drive wheel and the second clutch element. The second separation surface and the second clutch element cooperate to exert a force on the second clutch element to overcome the thrust of the second elastic element.

2. The fusion switch of claim 1, wherein The outer circumference of the main circuit drive wheel and the pre-charge circuit drive wheel is a gear, and an output wheel is provided between the main circuit drive wheel and the pre-charge circuit drive wheel. The output wheel is a gear whose outer circumference meshes with the main circuit drive wheel and the pre-charge circuit drive wheel simultaneously. The output wheel is driven by the power shaft to form a linkage. The relative direction of the first joint surface and the first separation surface is opposite to the relative direction of the second joint surface and the second separation surface.

3. The fusion switch of claim 1, wherein The first separation surface is a spiral variable-diameter arc surface, the first joint surface is a plane and is connected to the larger-radius end of the first separation surface, the smaller-radius end of the first separation surface is equal in radius to the smaller-radius end of the first joint surface, and the first matching groove is provided with two concentrically symmetrical portions relative to the center axis of the main loop driving wheel, and the two first matching grooves are connected by a cylindrical curved surface adapted to the outer peripheral wall of the main loop driving shaft. The second separation surface is a spiral variable-diameter arc surface, the second joint surface is a plane and is connected to the larger-radius end of the second separation surface, the smaller-radius end of the second separation surface is equal in radius to the smaller-radius end of the second joint surface, and the second matching groove is provided with two concentrically symmetrical portions relative to the center axis of the pre-charging loop driving wheel, and the two second matching grooves are connected by a cylindrical curved surface adapted to the outer peripheral wall of the pre-charging loop driving shaft.

4. The fusion switch of claim 1, wherein The center axes of the main loop driving shaft and the pre-charging loop driving shaft are arranged along the third direction Z. The main loop driving shaft is provided at one end with a main loop driving sliding assembly, the main loop driving sliding assembly comprises a second sliding block and a second guide rail member for limiting the linear sliding of the second sliding block along the second direction Y, the lower end of the main loop driving shaft is connected with a first rotating arm that rotates synchronously with the main loop driving shaft, the second sliding block is provided with a second sliding groove arranged along the first direction X, the outer end of the first rotating arm is provided with a roller that extends into the second sliding groove, and the circumferential rotation of the main loop driving shaft drives the second sliding block to reciprocatingly slide linearly along the second direction Y. The pre-charging loop driving shaft is provided at one end with a pre-charging loop driving sliding assembly, the pre-charging loop driving sliding assembly comprises a fourth sliding block and a fourth guide rail member for limiting the linear sliding of the fourth sliding block along the second direction Y, the lower end of the pre-charging loop driving shaft is connected with a second rotating arm that rotates synchronously with the pre-charging loop driving shaft, the fourth sliding block is provided with a fourth sliding groove arranged along the first direction X, the outer end of the second rotating arm is provided with a roller that extends into the fourth sliding groove, and the circumferential rotation of the pre-charging loop driving shaft drives the fourth sliding block to reciprocatingly slide linearly along the second direction Y. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

5. The fusion switch of claim 4, wherein, The main loop switching mechanism and the pre-charging loop switching mechanism are included. The main loop switching mechanism comprises a first multi-link mechanism with an energy storage member, the first multi-link mechanism with the energy storage member comprises a first arc-shaped motion input end, the rotation center axis of the first arc-shaped motion input end is arranged along the first direction X, and the second sliding block is in linkage cooperation with the first arc-shaped motion input end along the second direction Y. The pre-charging loop switching mechanism comprises a second multi-link mechanism with an energy storage member, the second multi-link mechanism with the energy storage member comprises a second arc-shaped motion input end, the rotation center axis of the second arc-shaped motion input end is arranged along the first direction X, and the fourth sliding block is in linkage cooperation with the second arc-shaped motion input end along the second direction Y.

6. The fusion switch according to claim 5, characterized in that, The first multi-link mechanism with energy storage includes a first jump buckle, a first lock buckle, and a first energy storage spring. The first multi-link mechanism has a closed state and a normal open state when the first jump buckle and the first lock buckle are in a buckling state, and a tripped open state when the first jump buckle and the first lock buckle are unlocked. A main circuit electromagnetic tripping device is provided to drive the first lock buckle to move from the locked position to the unlocked position. The second multi-link mechanism with energy storage includes a second jump buckle, a second lock buckle, and a second energy storage spring. The second multi-link mechanism has a closed state and a normal open state when the second jump buckle and the second lock buckle are in a buckling state, and a tripped open state when the second jump buckle and the second lock buckle are unlocked. A pre-charging circuit electromagnetic tripping device is provided to drive the first lock buckle to move from the locked position to the unlocked position.

7. The fuse switch according to claim 6, wherein The main circuit electromagnetic tripping device includes a first electromagnetic push block that cooperates with the first lock buckle. When the main circuit electromagnetic tripping device receives a signal, the first electromagnetic push block moves the first lock buckle from the locked position to the unlocked position. The first electromagnetic push block is provided with a first reset push rod extending to one side of the second sliding block, which cooperates with the main circuit drive shaft at the tripped open position to rotate and reset the main circuit electromagnetic tripping device. The main circuit free tripping mechanism can be re-tripped by rotating the main circuit drive shaft. The pre-charging circuit electromagnetic tripping device includes a second electromagnetic push block that cooperates with the second lock buckle. When the pre-charging circuit electromagnetic tripping device receives an open signal, the second electromagnetic push block moves the second lock buckle from the locked position to the unlocked position. The second electromagnetic push block is provided with a second reset push rod extending to one side of the fourth sliding block, which cooperates with the pre-charging circuit drive shaft at the tripped open position to rotate and reset the pre-charging circuit electromagnetic tripping device. The pre-charging circuit free tripping mechanism can be re-tripped by rotating the pre-charging circuit drive shaft.

8. The fusion switch according to claim 6 or 7, wherein The driving device is a driving motor, and the power shaft is an output shaft of the driving motor. The control system includes: A closing and opening control signal input unit for receiving switch closing control signals and switch opening control signals; A pre-charging circuit closing control unit for outputting a first driving signal to the driving motor to drive the driving motor to rotate in a first rotation direction to switch the pre-charging circuit switch mechanism to a closed state; A main circuit closing control unit for outputting a second driving signal to the driving motor to drive the driving motor to rotate in a second rotation direction to switch the main circuit switch mechanism to a closed state, the first rotation direction being opposite to the second rotation direction; A pre-charging circuit state signal receiving unit for receiving pre-charging circuit state signals; A main circuit state signal receiving unit for receiving main circuit state signals; A second pre-charging circuit opening control unit for outputting a fifth driving signal to the pre-charging circuit electromagnetic tripping device; The second main circuit opening control unit is configured to output a sixth driving signal to the main circuit electromagnetic tripping device; The central control unit is connected with the opening and closing control signal input unit, the pre-charging circuit closing control unit, the main circuit closing control unit, the pre-charging circuit state signal receiving unit, the main circuit state signal receiving unit, the second pre-charging circuit opening control unit and the second main circuit opening control unit; The second control mode is provided, in which an initial state is set, the main circuit free tripping mechanism and the pre-charging circuit free tripping mechanism are in the tripping opening state, and in the second control mode, the central control unit performs the following processes: When the opening and closing control signal input unit receives the switch closing control signal, the central control unit outputs a signal to the pre-charging circuit closing control unit to drive the motor to rotate in the first rotating direction until the pre-charging circuit switch mechanism is switched to the closing state; When the pre-charging circuit state signal receiving unit receives the pre-charging completion signal, the central control unit outputs a signal to the main circuit closing control unit to drive the motor to rotate in the second rotating direction until the main circuit switch mechanism is switched to the closing state; When the main circuit state signal receiving unit receives the main circuit state signal in the closing state, the central control unit outputs a signal to the second pre-charging circuit opening control unit after a time delay or under an external pre-charging opening instruction, the pre-charging circuit electromagnetic tripping device is energized to act, the pre-charging circuit free tripping mechanism is tripped and opened, and the pre-charging circuit on-off device is switched to the tripped and opened state; When the opening and closing control signal input unit receives the switch opening control signal, the central control unit outputs a signal to the second main circuit opening control unit, the main circuit electromagnetic tripping device is energized to act, the main circuit free tripping mechanism is tripped and opened, and the main circuit on-off device is switched to the tripped and opened state.

9. The fused switch according to any one of claims 1-7, wherein the driving device is a driving motor, and the power shaft is an output shaft of the driving motor; The control system comprises: The opening and closing control signal input unit is configured to receive the switch closing control signal and the switch opening control signal; The pre-charging circuit closing control unit is configured to output a first driving signal to the driving motor to drive the motor to rotate in the first rotating direction until the pre-charging circuit switch mechanism is switched to the closing state; The main circuit closing control unit is configured to output a second driving signal to the driving motor to drive the motor to rotate in the second rotating direction until the main circuit switch mechanism is switched to the closing state, and the first rotating direction is opposite to the second rotating direction; The pre-charging circuit state signal receiving unit is configured to receive the pre-charging circuit state signal; The main circuit state signal receiving unit is configured to receive the main circuit state signal; The first pre-charging circuit opening control unit is configured to output a third driving signal to the driving motor to drive the motor to rotate in the first rotating direction until the pre-charging circuit switch mechanism is switched to the normal opening state; The first main circuit opening control unit is configured to output a fourth driving signal to the driving motor to drive the motor to rotate in the second rotating direction until the main circuit switch mechanism is switched to the opening state. ​ The central control unit is connected with the switch-on / off control signal input unit, the pre-charging circuit switch-on control unit, the main circuit switch-on control unit, the pre-charging circuit state signal receiving unit, the main circuit state signal receiving unit, the first pre-charging circuit switch-off control unit and the first main circuit switch-off control unit; The control system has a first control mode, in which an initial state is set, the main circuit free trip mechanism and the pre-charging circuit free trip mechanism are both in a normal switch-off state, and in a second control mode, the central control unit executes the following processes: When the switch-on / off control signal input unit receives a switch-on control signal, the central control unit outputs a signal to the pre-charging circuit switch-on control unit to drive the motor to rotate in a first rotating direction until the pre-charging circuit switch mechanism is switched to a switch-on state; When the pre-charging circuit state signal receiving unit receives a pre-charging completion signal, the central control unit outputs a signal to the main circuit switch-on control unit to drive the motor to rotate in a second rotating direction until the main circuit switch mechanism is switched to a switch-on state; When the main circuit state signal receiving unit receives a main circuit state signal indicating a switch-on state, the central control unit outputs a signal to the first pre-charging circuit switch-off control unit to drive the motor to rotate in the first rotating direction until the pre-charging circuit switch mechanism is switched to a normal switch-off state after a time delay or under an external pre-charging switch-off instruction; When the switch-on / off control signal input unit receives a switch-off control signal, the central control unit outputs a signal to the first main circuit switch-off control unit to drive the motor to rotate in the second rotating direction until the main circuit switch mechanism is switched to a normal switch-off state.

Images