Switching device

Abstract

A switch device comprises a circuit breaker module, a pre-charging switch module and a transmission mechanism which is operably arranged between an operation handle of the circuit breaker and a pre-charging moving contact of a pre-charging switch. The transmission mechanism is configured to be driven by the operation handle when the operation handle rotates from the opening position to the closing position, so that the pre-charging moving contact rotates from the pre-charging opening position to the pre-charging closing position, and after the operation handle enables the pre-charging moving contact to rotate from the pre-charging opening position to the pre-charging closing position through the transmission mechanism and pre-charging succeeds, the pre-charging moving contact rotates from the pre-charging opening position to the pre-charging closing position. And the main shaft starts to rotate to drive the moving contact to rotate towards the closed position.

Description

Technical Field

[0001] The present application relates to a switchgear. Background Art

[0002] With the vigorous development of the new energy industry, the research on electrochemical energy storage solutions has attracted more and more attention. In all battery cabinet solutions, electrical components such as disconnectors, DC contactors and DC fuses are used. These electrical components are electrically connected and installed in the battery cabinet. Compared with using one component, the switchgear has at least the following disadvantages: there are many electrical connection contact points between the components, which causes an increase in line impedance and the risk of poor electrical contact; the increase in installation workload caused by the connection; the increase in the space occupied by the cabinet by the components; the increase in cost, etc. Therefore, switchgear that integrates multiple functions has the value of being created and developed. In addition, the current technical solution still has insufficient protection functions, namely: the fuse burns dry under a certain current, causing safety problems; the emergency tripping function is missing and other problems.

[0003] The present application provides a switching device that cooperates with a battery management system to achieve functions such as pre-closing, main closing and opening, disconnection under short-circuit current, and opening in emergency situations, filling a gap in the market. Summary of the invention

[0004] The present application provides a switch device, comprising: a circuit breaker module, having an operating handle and a disconnecting unit, the disconnecting unit comprising a main shaft, a moving contact and a stationary contact, the operating handle being operably connected to the main shaft so that the main shaft can rotate under the rotation drive of the operating handle, the moving contact being mounted on the main shaft and being able to rotate between a closed position and an open position with the rotation of the main shaft, in the closed position, the moving contact is in contact with the stationary contact, and in the open position, the moving contact is separated from the stationary contact; a pre-charged switch module, detachably mounted to the circuit breaker module, the pre-charged switch module having a housing , a pre-charged moving contact and a pre-charged static contact, the pre-charged moving contact can rotate between a pre-charged closed position and a pre-charged disconnected position, in the pre-charged closed position, the pre-charged moving contact contacts the pre-charged static contact, in the pre-charged disconnected position, the pre-charged moving contact is separated from the pre-charged static contact, wherein the switch device further comprises a transmission mechanism, which is operably arranged between an operating handle of the circuit breaker and the pre-charged moving contact of the pre-charged switch, and is configured to be driven by the operating handle when the operating handle rotates from the opening position to the closing position, so that the pre-charged moving contact rotates from the pre-charged disconnected position to the pre-charged closed position,

[0005] After the operating handle rotates the pre-charging moving contact from the pre-charging disconnecting position to the pre-charging closing position via the transmission mechanism and the pre-charging is successful, the main shaft starts to rotate to drive the moving contact to rotate toward the closing position.

[0006] Advantageously, the operating handle of the circuit breaker module includes a drive member, which is arranged at one end of the operating handle close to the transmission mechanism and is configured to drive the transmission mechanism to rotate the pre-charge moving contact from the pre-charge disconnected position to the pre-charged closed position when the operating handle rotates from the open position to the closed position.

[0007] Advantageously, the locking mechanism is configured to switch between a locked state and an unlocked state under the action of an electromagnet. When the locking mechanism abuts against a portion of the spindle, the locking mechanism is in a locked state to block the rotation of the spindle. When the locking mechanism is out of abutment with the spindle, the locking mechanism is in an unlocked state to not block the rotation of the spindle.

[0008] During the period when the driving member of the operating handle drives the transmission mechanism to rotate the pre-charge moving contact from the pre-charge disconnected position to the pre-charge closed position, the locking mechanism abuts against a part of the main shaft and is in a locked state. When the pre-charge is successful, the main shaft can start to rotate after the locking mechanism switches from the locked state to the unlocked state under the action of the electromagnet.

[0009] After the main shaft drives the moving contact to rotate to the closed position, the locking mechanism switches from the unlocked state to the locked state under the action of the electromagnet.

[0010] Before the main shaft rotates to rotate the moving contact from the closed position toward the open position, the locking mechanism is switched from the locked state to the unlocked state under the action of the electromagnet, so that the main shaft can drive the moving contact to rotate to the open position.

[0011] Advantageously, the transmission mechanism comprises:

[0012] a gear pivotally mounted to the housing at a first pivot;

[0013] a bracket, carrying the pre-filled movable contact, the bracket being pivotally mounted to the housing at a second pivot;

[0014] A connecting rod, pivotally mounted on one hand to the gear and on the other hand to the bracket,

[0015] A pre-charged spring, one end of which is connected to the housing and the other end to the bracket,

[0016] Among them, the gears, connecting rods, and brackets form a four-bar linkage mechanism, so that when the operating handle drives the driving member to rotate from the disconnected position to the closed position along the first direction, the driving member cooperates with the four-bar linkage mechanism, so that the bracket drives the pre-charge moving contact to rotate between the pre-charge disconnected position and the pre-charge closed position.

[0017] Advantageously, the driving member has a driving tooth and a first inclined surface and a second inclined surface located on both sides of the driving tooth along a width direction of the driving tooth, and the first inclined surface extends outward from the driving tooth along a first direction, and the second inclined surface extends outward from the driving tooth along a second direction opposite to the first direction.

[0018] The gear has a first tooth and a second tooth arranged in sequence along a first direction, and the first tooth and the second tooth partially overlap,

[0019] When the operating handle drives the driving member to rotate in a first direction, the first tooth is configured to abut against the first inclined surface but not to engage with the driving tooth. As the driving tooth continues to rotate past the first tooth, the second tooth is configured to engage with the driving tooth, so that the driving tooth causes the gear to rotate in a second direction, ultimately causing the bracket to drive the pre-charge moving contact to rotate from the pre-charge disconnected position to the pre-charge closed position.

[0020] Advantageously, it also includes a push rod pivotally mounted on the housing of the circuit breaker, and while the bracket drives the pre-charged moving contact to rotate from the pre-charged open position to the pre-charged closed position, a part of the bracket presses against the push rod, causing the push rod to pivot in a first direction and remain in place.

[0021] Advantageously, in the event of pre-charging failure, the operating handle drives the drive tooth to rotate in the second direction, and the first tooth is configured to engage with the drive tooth, so that the drive tooth causes the gear to rotate in the first direction, ultimately causing the bracket to drive the pre-charging moving contact to rotate from the pre-charging closed position to the pre-charging disconnected position, while the bracket disengages from the abutment with the push rod, and the push rod resets under the action of its spring.

[0022] Advantageously, when the pre-charging is successful, the main shaft begins to drive the moving contact to rotate in a first direction. The main shaft has a protrusion extending outward from it, which is configured to abut against the push rod and cause the push rod to pivot in a second direction. The push rod is configured to abut against a portion of the bracket and push the bracket to pivot in the first direction, thereby rotating the pre-charging moving contact from the pre-charging closed position to the pre-charging open position.

[0023] Advantageously, when the operating handle drives the driving member to rotate in the second direction, the driving tooth of the driving member rotates to abut the second tooth of the gear and causes the gear to pivot a predetermined angle in the first direction. After the driving tooth rotates past the gear, the gear pivots back in the second direction to a predetermined angle under the action of the pre-filling spring. The predetermined angle is designed so that the rotation of the gear will not cause the pre-filling spring to reach a dead point position.

[0024] Advantageously, the locking mechanism comprises:

[0025] Electromagnet;

[0026] The latch, connected to the moving iron core of the electromagnet, is pivotally mounted to the frame of the circuit breaker,

[0027] When the electromagnet is excited, the lock catch can pivot from a blocking position to a releasing position, wherein the blocking position corresponds to a locked state of the locking mechanism and the releasing position corresponds to an unlocked state of the locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features and advantages of exemplary embodiments of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of the present invention in any way, wherein:

[0029] Figure 1 A schematic diagram of a switchgear according to the present application is shown, and the circuit breaker is in an open state.

[0030] Figure 2 A perspective view showing a pre-charging module of a switchgear according to the present application.

[0031] Figure 3 A plan view of a pre-charging module of a switchgear according to the present application is shown. At this time, the pre-charging module is in a pre-slamming state.

[0032] Figure 4 A plan view of a pre-charging module of a switch device according to the present application is shown, at which point the pre-charging module is in a pre-charging closing state.

[0033] Figure 5 A schematic diagram of the switch device according to the present application is shown. At this time, the operating handle is rotated in a first direction so that the driving member of the operating handle begins to mesh with the gear of the transmission mechanism.

[0034] Figure 6 A schematic diagram of a switch device according to the present application is shown, at which time the pre-charge moving contact rotates to a pre-charge closed position.

[0035] Figure 7 A schematic diagram of a switch device according to the present application is shown, which shows that after the pre-charging is successful, the main shaft drives the moving contact to rotate to the closed position.

[0036] Figure 8 A schematic diagram of the switch device according to the present application is shown, which shows that after the pre-charging is successful, when the main shaft drives the moving contact to rotate toward the disconnected position, the driving member on the operating handle abuts against the gear of the transmission mechanism to rotate the gear by a predetermined angle.

[0037] Fig. 9 A perspective view of a drive according to the present application is shown.

[0038] Fig.10 A perspective view showing a gear according to the present application is shown.

[0039] Fig.11 An enlarged view of a pre-charge spring of a transmission mechanism according to the present application is shown.

[0040] Fig.12 A perspective view showing a support for a pre-charge spring of a transmission mechanism according to the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present disclosure. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0042] Compared to the embodiments shown in the drawings, feasible implementations within the scope of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0043] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the patent specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. When the number of components is not specified, the number of components may be one or more; similarly, words such as "one", "the", "said" and the like do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" and the like mean that the element or object appearing before the word includes the element or object listed after the word and its equivalent, without excluding other elements or objects. Words such as "install", "set", "connect" or "connected" and the like are not limited to physical or mechanical installation, setting, connection, but may include electrical installation, setting, connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate the relative position relationship when the device is in use or the position relationship shown in the drawings. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0044] In the following description, "first direction" and "second direction" are used, and "first direction" refers to the direction from Figure 1 The direction in which the operating handle rotates from the open position to the closed position, i.e. Figure 1 The second direction is the clockwise direction from Figure 1 The direction in which the operating handle rotates from the closed position to the open position, i.e. Figure 1 In the counterclockwise direction.

[0045] Figure 1A schematic diagram of a switchgear according to the present invention is shown. The switchgear comprises a circuit breaker module 1, a transmission mechanism 3 and a pre-charged switch module 2. The circuit breaker module has an operating handle 11 and a breaking unit, the breaking unit comprises a main shaft 12, a moving contact and a stationary contact, the operating handle 11 is operably connected to the main shaft 12, so that the main shaft 12 can rotate under the rotation drive of the operating handle 11, the moving contact is mounted on the main shaft, and can rotate between a closed position and an open position with the rotation of the main shaft, in the closed position, the moving contact is in contact with the stationary contact, and in the open position, the moving contact is separated from the stationary contact.

[0046] As for the operating handle 11 being operably connected to the main shaft 12, those skilled in the art will understand that the rotation of the operating handle 11 is transmitted to the main shaft 12 through the transmission assembly, thereby driving the main shaft 12 to rotate. Furthermore, those skilled in the art will understand that the transmission assembly between the operating handle 11 and the main shaft 12 has an energy storage main spring, and the rotation of the operating handle will charge the energy storage main spring. When the operating handle 11 is rotated from the open position to the closed position, in the presence of a pre-charged switch module and the pre-charging is successful, the energy storage main spring will begin to release energy to allow the main shaft 12 to start rotating. How the operating handle 11 drives the main shaft 12 to rotate is well known to those skilled in the art, and therefore, it will not be described in detail herein.

[0047] The pre-charging switch module 2 can be detachably mounted to the circuit breaker module, that is, when the pre-charging function is required, the pre-charging switch module can be installed to the circuit breaker module for use, and when the pre-charging function is not required, the pre-charging switch module can be detached from the circuit breaker module. Figure 2 The pre-charge moving contact 22 and the pre-charge stationary contact 23 are shown with dotted lines to show the internal components. The pre-charge moving contact 22 and the pre-charge stationary contact 23 are capable of rotating between a pre-charge closed position and a pre-charge opened position. In the pre-charge closed position, the pre-charge moving contact is in contact with the pre-charge stationary contact. In the pre-charge opened position, the pre-charge moving contact is separated from the pre-charge stationary contact.

[0048] The transmission mechanism 3 is operably arranged between the operating handle 11 of the circuit breaker and the pre-charge moving contact 22 of the pre-charge switch, and is configured to be driven by the operating handle when the operating handle rotates from the opening position to the closing position, so that the pre-charge moving contact moves from the pre-charge disconnection position (such as Figure 3 ) to the pre-charged closed position (as shown Figure 4 shown).

[0049] When the operating handle rotates from the opening position to the closing position in the first direction, the main shaft starts to rotate to drive the moving contact to rotate toward the closing position only after the operating handle rotates the pre-charged moving contact from the pre-charged opening position to the pre-charged closing position via the transmission mechanism and the pre-charge is successful. Thus, the pre-charged switch module is switched to the closing position by the operating handle, regardless of the rotation of the main shaft.

[0050] The transmission mechanism 3 includes a gear 31, which is pivotally mounted to the housing 21 at a first pivot 32. The bracket 33 is pivotally mounted to the housing 21 at a second pivot 34, and carries the pre-charged moving contact 22, so that the rotation of the bracket drives the pre-charged moving contact to rotate together. The connecting rod 35 is pivotally mounted to the bracket 33 and pivotally mounted to the gear 31. The gear 31, the connecting rod 35, and the bracket 33 form a four-bar linkage, so that the rotation of the gear 31 can cause the bracket 33 to drive the pre-charged moving contact 22 to rotate between the pre-charged closed position and the pre-charged open position. After the bracket drives the contact to rotate to the pre-charged spring through the dead point position, the pre-charged spring provides power for the bracket to continue rotating.

[0051] One end of the pre-charge spring 36 is connected to the housing 21 , and the other end is connected to the bracket 33 . Fig.11 and 12 FIG. 3 shows how the pre-fill spring 36 is mounted to the housing and the bracket 33. Specifically, one end of the pre-fill spring is inserted into the groove of the housing so that the pre-fill spring will not separate from the housing during movement. The pre-fill spring is supported by a support member 37 (such as Fig.12 ) is mounted to the bracket 33. The support member 37 includes a rod 371 and a mounting portion 372, and the pre-charge spring 36 is sleeved on the rod 371 and abuts against the mounting portion 372. The mounting portion 372 includes a first plate 3721 and a second plate 3722 extending parallel to each other and a connecting plate 3723 between the first plate and the second plate. When installed, the connecting plate 3723 is inserted into the corresponding groove 331 in the bracket 33, and the first plate 3721 and the second plate 3722 are located on both sides of the bracket 33. The end of the connecting plate 3723 has a curved surface to match the corresponding curved surface of the corresponding groove 331 in the bracket 33, so that the connecting plate 3723 can slide along the corresponding curved surface of the corresponding groove 331.

[0052] The operating handle 11 of the circuit breaker module includes a driving member 111, which is arranged at one end of the operating handle close to the transmission mechanism and is configured to drive the transmission mechanism to rotate the pre-charge moving contact from the pre-charge disconnected position to the pre-charged closed position when the operating handle rotates from the open position to the closed position.

[0053] like Fig. 9 The pump has a driving tooth 1111 and a first inclined surface 1112 and a second inclined surface 1113 located on both sides of the driving tooth along the width direction of the driving tooth, and the first inclined surface 1112 extends outward from the driving tooth along a first direction, and the second inclined surface extends outward from the driving tooth along a second direction opposite to the first direction.

[0054] The gear 31 has a first tooth 311 and a second tooth 312 sequentially arranged along a first direction (when the gear rotates along the first direction, the first tooth 311 is located upstream of the second tooth 312 ), and the first tooth 311 and the second tooth 312 partially overlap.

[0055] When the operating handle drives the driving member to rotate in the first direction, the first tooth 311 is configured to abut against the first inclined surface 1112 without engaging with the driving tooth. As the driving tooth continues to rotate past the first tooth (during this period, the first tooth slides relatively along the first inclined surface), the second tooth 312 is configured to engage with the driving tooth, so that the driving tooth causes the gear 31 to rotate in the second direction, ultimately causing the bracket to drive the pre-charge moving contact to rotate from the pre-charge disconnected position to the pre-charge closed position.

[0056] The locking mechanism 4 is configured to switch between a locked state and an unlocked state under the action of an electromagnet. When the locking mechanism abuts against a part of the main shaft, the locking mechanism is in a locked state to block the rotation of the main shaft. When the locking mechanism is out of abutment with the main shaft, the locking mechanism is in an unlocked state and does not block the rotation of the main shaft. The locking mechanism 4 includes an electromagnet 41 and a lock catch 42, which is connected to a moving iron core of the electromagnet and is pivotally mounted to the frame of the circuit breaker. When the electromagnet is excited, the lock catch can pivot from a blocking position to a release position, the blocking position corresponds to the locked state of the locking mechanism, and the release position corresponds to the unlocked state of the locking mechanism.

[0057] The switch device also includes a push rod 4 pivotably mounted on the housing of the circuit breaker. When the bracket drives the pre-charged moving contact to rotate from the pre-charged disconnected position to the pre-charged closed position, a portion of the bracket 33 presses against the push rod 4, causing the push rod to pivot in a first direction and hold it in place.

[0058] The following describes the operation of rotating the operating handle from the open position to the closed position along the first direction and the operation when the pre-charging fails and succeeds.

[0059] exist Figure 1 When the operating handle 11 starts to rotate a certain angle in the first direction, the driving tooth 1111 of the driving member rotates through the first tooth 311 and meshes with the second tooth 312, as shown in FIG. Figure 5 As shown, this causes the gear 31 to pivot about the first pivot 32 in the second direction, and then the bracket 33 drives the pre-charge moving contact 22 to rotate from the pre-charge disconnected position to the pre-charge closed position via the four-bar linkage. Then, as the operating handle continues to rotate, after the pre-charge spring 37 passes the dead point position, the pre-charge spring 37 provides power to drive the bracket 33 to drive the pre-charge moving contact 22 to rotate to the pre-charge closed position. Figure 6As shown, the pre-charged moving contact reaches the pre-charged closed position and contacts the pre-charged static contact. At this time, the lock 42 is in the blocking position, abutting against a part of the main shaft to block the main shaft from rotating. At this time, the push rod is pushed by the bracket and rotates to keep Figure 6 Position shown.

[0060] In the case of successful pre-charging, under the action of the electromagnet 41, the lock 42 pivots to the release position and disengages from the abutment with the main shaft. At this time, the main shaft begins to rotate in the first direction. As the main shaft rotates, the protrusion 121 of the main shaft (extending outward from the main shaft) is configured to abut against the push rod and cause the push rod to pivot in the second direction. The push rod abuts against that part of the bracket and pushes the bracket to pivot in the first direction around the second pivot, thereby rotating the pre-charging moving contact from the pre-charging closed position to the pre-charging open position. Figure 7 shown.

[0061] In the case of pre-charging failure, the operating handle drives the driving member to rotate in the second direction, and the first tooth is configured to mesh with the driving tooth, so that the driving tooth causes the gear to rotate in the first direction, and finally causes the bracket to drive the pre-charging moving contact to rotate from the pre-charging closed position to the pre-charging disconnected position, and at the same time the bracket is disengaged from the abutment with the push rod, and the push rod is reset under the action of its spring 41. Specifically, the driving tooth causes the gear to rotate in the first direction, and the bracket 33 drives the pre-charging moving contact to rotate from the pre-charging closed position to the pre-charging disconnected position via the four-bar linkage. After the bracket 33 drives the pre-charging moving contact 22 to rotate, so that the pre-charging spring 37 passes the dead point position, the pre-charging spring 37 provides the power to drive the bracket 33 to drive the pre-charging moving contact 22 to rotate to the pre-charging disconnected position.

[0062] Before the moving contact is intended to be rotated from the closed position to the open position, the lock catch 42 is rotated from the blocking position to the releasing position again by using an electromagnet. Then, the operating handle is rotated in the second direction, and the second inclined surface 1113 of the driving tooth of the driving member is rotated to abut against the second tooth 312 of the gear (such as Figure 8 The gear is rotated by a predetermined angle in the first direction, and after the driving tooth rotates through the gear, the gear is pivoted back by a predetermined angle in the second direction under the action of the pre-charge spring. The predetermined angle is designed so that the rotation of the gear does not cause the pre-charge spring to reach the dead point position. After that, the main shaft drives the moving contact to the disconnected position.

[0063] Through the switch device of the present application, combined with the circuit breaker module and the pre-charge switch module, the functions of pre-full closing, main opening and closing, breaking under short-circuit current and opening in emergency are realized. In addition, the present application uses the rotation of the operating handle to rotate the pre-charge moving contact to the pre-charge closed position, and does not require the main energy storage spring of the main shaft, so that the elastic force of the main energy storage spring can be fully used to drive the main shaft to rotate.

[0064] Although the present invention has been described in the specification and illustrated in the drawings with reference to various embodiments, those skilled in the art will appreciate that the above embodiments are merely preferred implementations, and certain technical features in the embodiments may not be necessary for solving specific technical problems, and thus these technical features may be absent or omitted without affecting the solution of the technical problems or the formation of technical solutions; moreover, the features, elements and / or functions of one embodiment may be appropriately combined, coupled or coordinated with the features, elements and / or functions of one or more other embodiments, unless the combination, coupling or coordination is obviously not feasible.

Claims

1. A switch device, comprising: A circuit breaker module, comprising an operating handle and a breaking unit, wherein the breaking unit comprises a main shaft, a moving contact and a stationary contact, wherein the operating handle is operably connected to the main shaft so that the main shaft can rotate under the rotation drive of the operating handle, and the moving contact is mounted on the main shaft and can rotate between a closed position and an open position with the rotation of the main shaft, wherein the moving contact contacts the stationary contact in the closed position and the moving contact separates from the stationary contact in the open position; The pre-charge switch module can be detachably mounted to the circuit breaker module. The pre-charge switch module has a housing, a pre-charge moving contact and a pre-charge static contact. The pre-charge moving contact can rotate between a pre-charge closed position and a pre-charge disconnected position. In the pre-charge closed position, the pre-charge moving contact contacts the pre-charge static contact. In the pre-charge disconnected position, the pre-charge moving contact is separated from the pre-charge static contact. The switch device further comprises a transmission mechanism, which is operably arranged between the operating handle of the circuit breaker and the pre-charge moving contact of the pre-charge switch, and is configured to be driven by the operating handle when the operating handle rotates from the opening position to the closing position, so that the pre-charge moving contact rotates from the pre-charge opening position to the pre-charge closing position. After the operating handle rotates the pre-charging moving contact from the pre-charging disconnecting position to the pre-charging closing position via the transmission mechanism and the pre-charging is successful, the main shaft starts to rotate to drive the moving contact to rotate toward the closing position.

2. The switchgear according to claim 1, characterized in that The operating handle of the circuit breaker module includes a driving member, which is arranged at one end of the operating handle close to the transmission mechanism and is configured to drive the transmission mechanism to rotate the pre-charge moving contact from the pre-charge disconnected position to the pre-charged closed position when the operating handle rotates from the open position to the closed position.

3. The switchgear according to claim 2, characterized in that The locking mechanism is configured to switch between a locked state and an unlocked state under the action of an electromagnet. When the locking mechanism abuts against a portion of the main shaft, the locking mechanism is in a locked state to block the rotation of the main shaft. When the locking mechanism is out of contact with the main shaft, the locking mechanism is in an unlocked state to not block the rotation of the main shaft. During the period when the driving member of the operating handle drives the transmission mechanism to rotate the pre-charge moving contact from the pre-charge disconnected position to the pre-charge closed position, the locking mechanism abuts against a part of the main shaft and is in a locked state. When the pre-charge is successful, the main shaft can start to rotate after the locking mechanism switches from the locked state to the unlocked state under the action of the electromagnet. After the main shaft drives the moving contact to rotate to the closed position, the locking mechanism switches from the unlocked state to the locked state under the action of the electromagnet. Before the main shaft rotates to rotate the moving contact from the closed position toward the open position, the locking mechanism is switched from the locked state to the unlocked state under the action of the electromagnet, so that the main shaft can drive the moving contact to rotate to the open position.

4. The switchgear according to claim 2, characterized in that The transmission mechanism comprises: a gear pivotally mounted to the housing at a first pivot; a bracket, carrying the pre-filled movable contact, the bracket being pivotally mounted to the housing at a second pivot; A connecting rod, pivotally mounted on one hand to the gear and on the other hand to the bracket, A pre-charged spring, one end of which is connected to the housing and the other end to the bracket, Among them, the gears, connecting rods, and brackets form a four-bar linkage mechanism, so that when the operating handle drives the driving member to rotate from the disconnected position to the closed position along the first direction, the driving member cooperates with the four-bar linkage mechanism, so that the bracket drives the pre-charge moving contact to rotate between the pre-charge disconnected position and the pre-charge closed position.

5. The switchgear according to claim 4, characterized in that The driving member comprises a driving tooth and a first inclined surface and a second inclined surface located on both sides of the driving tooth along a width direction of the driving tooth, wherein the first inclined surface extends outwardly from the driving tooth along a first direction, and the second inclined surface extends outwardly from the driving tooth along a second direction opposite to the first direction. The gear has a first tooth and a second tooth arranged in sequence along a first direction, and the first tooth and the second tooth partially overlap, When the operating handle drives the driving member to rotate in a first direction, the first tooth is configured to abut against the first inclined surface but not to engage with the driving tooth. As the driving tooth continues to rotate past the first tooth, the second tooth is configured to engage with the driving tooth, so that the driving tooth causes the gear to rotate in a second direction, ultimately causing the bracket to drive the pre-charge moving contact to rotate from the pre-charge disconnected position to the pre-charge closed position.

6. The switchgear according to claim 5, characterized in that It also includes a push rod pivotally mounted on the housing of the circuit breaker. When the bracket drives the pre-charged moving contact to rotate from the pre-charged disconnected position to the pre-charged closed position, a part of the bracket presses the push rod to pivot along the first direction and hold it in place.

7. The switchgear according to claim 6, characterized in that In the event of pre-charging failure, the operating handle drives the driving tooth to rotate in the second direction, and the first tooth is configured to engage with the driving tooth, so that the driving tooth causes the gear to rotate in the first direction, ultimately causing the bracket to drive the pre-charging moving contact to rotate from the pre-charging closed position to the pre-charging disconnected position, and at the same time the bracket disengages from the abutment with the push rod, and the push rod resets under the action of its spring.

8. The switchgear according to claim 6, characterized in that When the pre-charging is successful, the main shaft starts to drive the moving contact to rotate in the first direction. The main shaft has a protrusion extending outward from it, which is configured to abut against the push rod and cause the push rod to pivot in the second direction. The push rod is configured to abut against a part of the bracket and push the bracket to pivot in the first direction, thereby rotating the pre-charging moving contact from the pre-charging closed position to the pre-charging disconnected position.

9. The switchgear according to claim 8, characterized in that When the operating handle drives the driving member to rotate in the second direction, the driving tooth of the driving member rotates to abut the second tooth of the gear and causes the gear to pivot a predetermined angle in the first direction. After the driving tooth rotates past the gear, the gear pivots back in the second direction to a predetermined angle under the action of the pre-filling spring. The predetermined angle is designed so that the rotation of the gear will not cause the pre-filling spring to reach a dead point position.

10. The switch device according to claim 3, characterized in that The locking mechanism includes: Electromagnet; The latch, connected to the moving iron core of the electromagnet, is pivotally mounted to the frame of the circuit breaker, When the electromagnet is excited, the lock catch can pivot from a blocking position to a releasing position, wherein the blocking position corresponds to a locked state of the locking mechanism and the releasing position corresponds to an unlocked state of the locking mechanism.

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