Change-over switch and energy storage system

Abstract

The utility model provides a change-over switch and an energy storage system, and relates to the technical field of low-voltage electric appliances, the change-over switch comprises a shell, a driving mechanism, a transmission mechanism and a contact assembly are sequentially connected in the shell, the driving mechanism drives the contact assembly to open and close through the transmission mechanism, and the driving mechanism and the contact assembly are located on the same plane in a first direction. The contact assembly comprises a moving contact, a first static contact, a second static contact and a third static contact, the first static contact, the second static contact and the third static contact are matched with the moving contact, the transmission mechanism is connected with the moving contact, and the moving contact is connected with the load end through the third static contact. The driving mechanism transmits power through the transmission mechanism so as to drive the contact assembly to realize opening and closing; the driving mechanism and the contact assembly are located in the same plane, and the structure of the change-over switch can be more compact by utilizing spatial layout, so that the occupied volume of the change-over switch is reduced, and the market demand of product miniaturization is met.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a conversion switch and an energy storage system. Background Art

[0002] A transfer switch is a low-voltage switch that switches multiple circuits and can be used to switch between two circuits. A transfer switch is often composed of multiple contacts, with multiple moving contacts welded on its shaft. When the shaft rotates, the moving contacts are connected or disconnected with the static contacts in turn, thereby switching circuits.

[0003] Transfer switches are important components in power distribution systems, so the market has also put forward higher requirements for transfer switches, especially its miniaturization function has attracted more and more attention. Due to the structural setting of the current transfer switch, it occupies a large volume, which is not conducive to the development demand of miniaturization of transfer switches. Utility Model Content

[0004] The purpose of this application is to provide a switching switch and energy storage system to address the deficiencies in the above-mentioned prior art, which can reduce the volume of the product and facilitate miniaturization scenario requirements.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] According to one aspect of an embodiment of the present application, a switching switch is provided, comprising a shell, in which a driving mechanism, a transmission mechanism and a contact assembly are connected in sequence, and the driving mechanism drives the contact assembly to open and close through the transmission mechanism. In a first direction, the driving mechanism and the contact assembly are located in the same plane; wherein the contact assembly comprises a moving contact and a first stationary contact, a second stationary contact and a third stationary contact respectively matched with the moving contact, the transmission mechanism is connected to the moving contact, and the moving contact is connected to a load end through the third stationary contact.

[0007] Optionally, the first static contact and the second static contact are arranged along the first direction, the third static contact, the moving contact, the first static contact and the second static contact are arranged along the second direction, the transmission mechanism is located along the third direction on another plane opposite to the contact assembly, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] Optionally, a partition is provided in the shell to divide the shell along the third direction into a first cavity and a second cavity respectively located on both sides of the partition, the contact assembly is located in the first cavity, and the drive mechanism and the transmission mechanism are located in a second cavity opposite to the first cavity.

[0009] Optionally, the first stationary contact and the second stationary contact are located on the same side, and the third stationary contact is located on the opposite side of the first stationary contact and the second stationary contact;

[0010] The projection of the driving mechanism along the first direction at least partially overlaps with the projection of the contact assembly along the first direction, and a center line of the projection in the second direction passes through a region of the projection.

[0011] Optionally, the number of the moving contact, the first static contact, the second static contact and the third static contact is one to form a single-pole main circuit, and in the first direction, the extension distance of the third static contact is greater than or equal to the distance between the first static contact and the second static contact, so that when one end of the moving contact contacts the first static contact or the second static contact, the other end of the moving contact contacts the third static contact at the same time.

[0012] Optionally, the driving mechanism comprises a motor and a worm connected to the motor, the transmission mechanism comprises a gear set, and the driving mechanism is connected to the contact assembly via the gear set;

[0013] The gear set includes a first gear meshing with the worm and a second gear connected to the contact assembly, and the first gear and the second gear are meshed with each other through at least one transmission gear.

[0014] Optionally, the driving mechanism includes a motor, the transmission mechanism includes a connecting rod assembly, and the driving mechanism is connected to the contact assembly via the connecting rod assembly;

[0015] The connecting rod assembly includes a first connecting rod and a second connecting rod connected to each other, the first connecting rod is also connected to the motor, and the second connecting rod is also connected to the contact assembly to form a four-bar linkage mechanism between the first connecting rod, the second connecting rod and the contact assembly.

[0016] Optionally, the driving mechanism includes a motor, the transmission mechanism includes a connecting rod assembly, and the driving mechanism is connected to the contact assembly via the connecting rod assembly;

[0017] The connecting rod assembly comprises a first connecting rod and a second connecting rod connected to each other, the first connecting rod is also connected to the motor, and the second connecting rod is also connected to the contact assembly, so as to form a three-link mechanism between the first connecting rod, the second connecting rod and the contact assembly;

[0018] The fourth connecting rod is provided with a slide groove extending along its axial direction, and the third connecting rod is arranged in the slide groove; when the moving contact contacts the first static contact or the second static contact, the angle between the axis of the third connecting rod and the axis of the fourth connecting rod is less than 90°.

[0019] Optionally, it further comprises a detection assembly, the detection assembly comprises a first detector and a second detector respectively connected to the driving mechanism, the first detector and the second detector are respectively located on both sides of the power input end of the moving contact;

[0020] When the moving contact contacts the first stationary contact, the first detector is used to abut against the moving contact in a linkage manner; when the moving contact contacts the second stationary contact, the second detector is used to abut against the moving contact in a linkage manner.

[0021] Another aspect of the embodiments of the present application provides an energy storage system, comprising the above-mentioned conversion switch.

[0022] The beneficial effects of this application include:

[0023] The present application provides a switching switch and an energy storage system, wherein a driving mechanism transmits power through a transmission mechanism to drive a contact assembly to realize opening and closing of the switch; the driving mechanism and the contact assembly are in the same plane in a first direction, and the spatial layout can be utilized to make the structure of the switching switch more compact, thereby reducing the occupied volume of the switching switch and meeting the market demand for miniaturization of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 One of the structural schematic diagrams of a conversion switch provided in an embodiment of the present application;

[0026] Figure 2 A second structural diagram of a conversion switch provided in an embodiment of the present application;

[0027] Figure 3 A third structural diagram of a conversion switch provided in an embodiment of the present application;

[0028] Figure 4 A fourth structural diagram of a conversion switch provided in an embodiment of the present application;

[0029] Figure 5A side view of a transfer switch provided in an embodiment of the present application;

[0030] Figure 6 A projection diagram of a conversion switch provided in an embodiment of the present application in a first direction;

[0031] Figure 7 A fifth structural diagram of a conversion switch provided in an embodiment of the present application;

[0032] Figure 8 This is a sixth structural schematic diagram of a conversion switch provided in an embodiment of the present application.

[0033] Icon: 10-housing; 101-first cavity; 102-second cavity; 11-driving mechanism; 12-transmission mechanism; 121-first gear; 122-transmission gear; 123-second gear; 123a-abutment portion; 124-first connecting rod; 125-second connecting rod; 126-third connecting rod; 127-fourth connecting rod; 127a-slide groove; 13-contact assembly; 130-moving contact; 131-first static contact; 132-second static contact; 133-third static contact; 141-first detector; 142-second detector; S1-first plane; S2-second plane; F1-first direction; F2-second direction; F3-third direction; a, b-projection; m-midline; θ-angle. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In one aspect of the embodiment of the present application, please refer to Figure 1 As shown, a switching switch is provided, including a driving mechanism 11, a transmission mechanism 12 and a contact assembly 13 connected in sequence. The driving mechanism 11 drives the contact assembly 130 to open and close through the transmission mechanism 12. In a first direction F1, the driving mechanism 11 and the contact assembly 13 are located in the same plane.

[0041] The driving mechanism 11 provides power and transmits the power to the transmission mechanism 12, and the transmission mechanism 12 then transmits the power to the contact assembly 13 to drive the contact assembly 130 to open and close.

[0042] In the present application, the driving mechanism 11 and the contact assembly 13 are located in the same plane in the first direction F1. For example, Figure 5 As shown, the drive mechanism 11 is located above the contact assembly 13, so that the two are in the same plane, which can shorten the length of the transfer switch in the third direction F3 and make the structure compact.

[0043] Therefore, in the conversion switch provided in the embodiment of the present application, the driving mechanism 11 transmits power through the transmission mechanism 12 to drive the contact 130 assembly to realize opening and closing; the driving mechanism 11 and the contact assembly 13 are in the same plane, and the spatial layout can be used to make the structure of the conversion switch more compact, so as to reduce the occupied volume of the conversion switch and meet the market demand for miniaturization of the product.

[0044] For the contact assembly 13, refer to Figure 1 , Figure 3 It includes a moving contact 130 and a first stationary contact 131 and a second stationary contact 132 respectively cooperating with the moving contact 130, and the transmission mechanism 12 is connected to the moving contact 130; the moving contact 130 includes two stacked moving contact pieces, and the first stationary contact 131 and the second stationary contact 132 are respectively clamped between the two moving contact pieces.

[0045] The moving contact 130 of the present application has two moving contact pieces, and the first stationary contact 131 and the second stationary contact 132 are respectively clamped between the two moving contact pieces. The clamping method can make the moving contact 130 and the stationary contact reliably contact; and the moving contact 130 cooperates with the first stationary contact 131 and the second stationary contact 132 respectively to form a double-breakpoint contact assembly 13, thereby improving the performance of the contact assembly 13.

[0046] The first stationary contact 131 and the second stationary contact 132 are located on the same side. The moving contact 130 is rotated by the transmission mechanism 12 to contact or separate with the first stationary contact 131 and the second stationary contact 132 respectively.

[0047] On this basis, the contact assembly 13 of the present application further includes a third static contact 133 , the moving contact 130 is connected to the load end via the third static contact 133 , and the third static contact 133 is located on the opposite side of the first static contact 131 and the second static contact 132 .

[0048] The third stationary contact 133 is also in contact with the moving contact 130 in a clamping manner. When the moving contact 130 is driven to rotate to the third stationary contact 133, it can be connected to the load through contact with the third stationary contact 133 to drive the load to operate.

[0049] Furthermore, the number of the moving contact 130, the first static contact 131, the second static contact 132 and the third static contact 133 of the present application is one, so that the contact assembly 13 can form a single-pole main circuit. Compared with the multi-pole main circuit structure of the existing multi-section contacts, the structure of the single-stage main circuit of the present application is simpler, which simplifies the structural setting of the contact assembly 13, and correspondingly reduces the space occupancy, making the volume of the switching switch more miniaturized.

[0050] In addition, in the connection direction between the first static contact 131 and the second static contact 132, that is, in the first direction F1, the extension distance of the third static contact 133 is greater than or equal to the distance between the first moving contact 130 and the second moving contact 130, so that when one end of the moving contact 130 contacts the first static contact 131 or the second static contact 132, the other end of the moving contact 130 contacts the third static contact 133 at the same time.

[0051] The moving contact 130 is driven to rotate, and when one end of the moving contact 130 contacts the first stationary contact 131, the other end of the moving contact 130 contacts the third stationary contact 133 at the same time, so as to realize the conduction of the load. When one end of the moving contact 130 contacts the second stationary contact 132, the other end of the moving contact 130 also contacts the third stationary contact 133 at the same time, so as to realize the conduction of the load.

[0052] By setting the double breakpoints of the first static contact 131 and the second static contact 132, dual circuit protection is provided to the load, thereby improving the reliability of the product.

[0053] Furthermore, the first static contact 131 and the second static contact 132 in the present application are arranged along the first direction F1, the third static contact 133, the moving contact 130, the first static contact 131 and the second static contact 132 are arranged along the second direction F2, the transmission mechanism 12 is located along the third direction F3 in another plane opposite to and parallel to the contact assembly 13, and the first direction F1, the second direction F2 and the third direction F3 are perpendicular to each other.

[0054] The driving mechanism 11 is connected to the transmission mechanism 12, and the transmission mechanism 12 is connected to the contact assembly 13. Figure 5 It can be seen that the drive mechanism 11 and the contact assembly 13 are arranged up and down along the height direction (first direction F1) and are located in the first plane S1 on the left side, the transmission mechanism 12 and the contact assembly 13 are opposite to each other, and the transmission mechanism 12 is located in the second plane S2 on the right side along the third direction F3, and the first plane S1 and the second plane S2 are parallel and opposite to each other.

[0055] Such an arrangement makes full use of the spatial layout, so that the driving mechanism 11, the transmission mechanism 12 and the contact assembly 13 are connected in sequence, while further reducing the overall volume.

[0056] Furthermore, if Figure 6 As shown, the projection a of the drive mechanism 11 along the first direction F1 at least partially overlaps with the projection b of the contact assembly 13 along the first direction F1, and the projection a is within the region where the midline m of the projection in the third direction F3 passes through the projection b.

[0057] As mentioned above, the drive mechanism 11 and the contact assembly 13 are arranged in a vertical manner along the height direction (first direction F1) and are located on the first plane S1 on the left side. The projections of the two on the first direction F1 are as shown in FIG. Figure 6 As shown, they at least partially overlap, indicating that the projections of the two are as close as possible, which also makes the structure more compact in terms of spatial layout.

[0058] The projections of the two in the first direction F1 are projected onto the plane in the third direction F3, forming Figure 6 As shown in the projection diagram, in this embodiment, the smaller rectangular projection is the projection a of the drive mechanism 11 in the first direction F1, and the larger rectangular projection is the projection b of the contact assembly 13 in the first direction F1.

[0059] Depend on Figure 5 It can be seen that in the third direction F3, the length of the driving mechanism 11 is smaller than the length of the contact assembly 13, so the contact assembly 13 protrudes from the driving mechanism 11, thus forming Figure 6 The area of ​​projection b is larger than the area of ​​projection a. Of course, in other embodiments, those skilled in the art may also select different component structures to make the area of ​​projection a larger than the area of ​​projection b. This is not limited here, as long as projection a and projection b at least partially overlap.

[0060] Moreover, the midline m of the projection a of the driving mechanism 11 in the second direction F2 passes through the region of the projection b. Figure 1 , Figure 5 and Figure 6 That is, the driving mechanism 11 is closer to the contact assembly 13 in the third direction F3, and the midlines of the two in the second direction F2 tend to coincide as much as possible, so as to make the driving mechanism 11 and the contact assembly 13 more compact in the third direction F3, so that the length of the conversion switch in the third direction F3 is further reduced, and the conversion switch is formed. Figure 5 The thin-walled structure with a shorter length in the third direction F3 is used to minimize the thickness of the transfer switch and reduce its overall space occupation volume. The driving mechanism 11, the transmission mechanism 12 and the contact assembly 13 are all located in the housing 10 of the transfer switch. A partition is provided in the housing 10 to divide the housing 10 along the third direction F3 into a first cavity 101 and a second cavity 102 located on both sides of the partition and disposed opposite to each other, wherein the contact assembly 13 is located in the first cavity 101, and the driving mechanism 11 and the transmission mechanism 12 are located in the second cavity 102.

[0061] The contact assembly 13 is used for opening and closing the switch. An arc will be generated when the breakpoint is connected or disconnected. Separating the contact assembly 13 from the drive mechanism 11 and the transmission mechanism 12 through different cavities can improve the isolation effect of the electrical appliance, so that the contact assembly 13 will not be broken down under a higher voltage, thereby improving the dielectric strength of the product.

[0062] Refer to Figure 3 The housing 10 of the transfer switch is also provided with a mounting hole 10a, which is used for mounting and connecting the transfer switch and the adapter device, and the mounting hole 10a extends along the arrangement direction of the three static contacts (ie, the second direction F2).

[0063] On this basis, the transmission mechanism 12 as a power transmission component can have different transmission forms. In one embodiment of the present application, Figure 2 , Figure 4 As shown, the transmission mechanism 12 can be transmitted by gear transmission; for example, the drive mechanism 11 includes a motor and a worm connected to the motor, the transmission mechanism 12 includes a gear set, and the drive mechanism 11 is connected to the contact assembly 13 through the gear set. Further, the gear set includes a first gear 121 meshing with the worm and a second gear 123 connected to the contact assembly 13, and the first gear 121 and the second gear 123 are meshed through at least one transmission gear 122. By providing at least one transmission gear 122, interference between the drive mechanism 11 and the contact assembly 13 is avoided, that is, the projection of the drive mechanism 11 along the third direction F3 and the projection of the contact assembly 13 along the third direction F3 will not overlap, the overall spatial layout of the conversion switch is more reasonable, the length of the conversion switch in the third direction F3 is further shortened, and the overall volume of the conversion switch is reduced.

[0064] A worm gear transmission is adopted between the driving mechanism 11 and the transmission mechanism 12. The motor is first connected to the worm, and the rotation of the motor drives the worm to rotate. The worm and the first gear 121 equivalent to the worm gear are meshed for transmission. The first gear 121, the transmission gear 122 and the second gear 123 are meshed in sequence to form a transmission of the gear set. The second gear 123 is connected to the moving contact 130 of the contact assembly 13. The moving contact 130 and the second gear 123 can be connected by a connecting shaft, so as to transmit power to the moving contact 130, drive the moving contact 130 to rotate, so as to contact or separate with the corresponding static contact.

[0065] The worm gear transmission method has a large transmission ratio and can reduce the output speed of the motor to meet a reasonable transmission speed. This transmission is also conducive to the requirement of compact structure.

[0066] In the present application, the second gear 123 is a sector gear, and a transmission gear 122 is disposed between the first gear 121 and the second gear 123 to transmit the power of the driving mechanism 11 located above to the contact assembly 13 below.

[0067] According to the arrangement positions of the driving mechanism 11 and the contact assembly 13 , the number of the transmission gears 122 may be specifically set to meet the transmission requirements.

[0068] In another embodiment of the present application, a connecting rod transmission method can be used for transmission; Figure 7 As shown, the driving mechanism 11 includes a motor, the transmission mechanism 12 includes a connecting rod assembly, and the driving mechanism 11 is connected to the contact assembly 13 through the connecting rod assembly; wherein the connecting rod assembly includes a first connecting rod 124 and a second connecting rod 125 that are connected to each other, the first connecting rod 124 is also connected to the motor, and the second connecting rod 125 is also connected to the moving contact 130 of the contact assembly 13, so as to form a four-bar mechanism between the first connecting rod 124, the second connecting rod 125 and the moving contact 130 of the contact assembly 13.

[0069] When the driving mechanism 11 is a motor, the motor and the moving contact 130 of the contact assembly 13 are connected in sequence through the first connecting rod 124 and the second connecting rod 125. The rotation of the motor drives the first connecting rod 124 and the second connecting rod 125 to drive the moving contact 130 to rotate to contact or separate from the static contact.

[0070] When the connection points of the first connecting rod 124, the second connecting rod 125 and the moving contact 130 of the contact assembly 13 are connected in sequence, a four-bar linkage can be formed. The driving method of the four-bar linkage is simple and direct, which can enhance the flexibility of transmission and is also conducive to the demand for miniaturization of the conversion switch.

[0071] Refer to Figure 8 As shown, the connecting rod assembly can also form a three-link mechanism; specifically, in another embodiment, the driving mechanism 11 includes a motor, the transmission mechanism 12 includes a connecting rod assembly, and the driving mechanism 11 is connected to the contact assembly 13 through the connecting rod assembly;

[0072] The connecting rod assembly includes a third connecting rod 126 and a fourth connecting rod 127 connected to each other, the third connecting rod 126 is also connected to the motor, and the fourth connecting rod 127 is also connected to the contact assembly 13, so as to form a three-link mechanism between the third connecting rod 126, the fourth connecting rod 127 and the contact assembly 13;

[0073] The fourth connecting rod 127 is provided with a slide groove 127a extending along its axial direction, and the third connecting rod 126 is arranged in the slide groove 127a; when the moving contact 130 contacts the first static contact 131 or the second static contact 132, the angle between the axis of the third connecting rod 126 and the axis of the fourth connecting rod 127 is less than 90°.

[0074] The motor and the moving contact 130 of the contact assembly 13 are connected in sequence through the third connecting rod 126 and the fourth connecting rod 127. The rotation of the motor drives the third connecting rod 126 and the fourth connecting rod 127 to drive the moving contact 130 to rotate to contact or separate with the static contact.

[0075] In addition, the fourth connecting rod 127 has a sliding groove 127a extending along the axial direction thereof, and the third connecting rod 126 is slidably disposed in the sliding groove 127a. When the third connecting rod 126 is driven to operate, the third connecting rod 126 will stably slide along the sliding groove 127a and drive the fourth connecting rod 127 to operate. The other end of the fourth connecting rod 127 is fixedly connected to the moving contact 130, so that the moving contact 130 rotates synchronously under the drive of the fourth connecting rod 127.

[0076] The fourth connecting rod 127 rotates around a fixed axis at one end connected to the moving contact 130, and the center of rotation is the fixed connection point between the fourth connecting rod 127 and the moving contact 130. This connection method forms a three-link mechanism, optimizes the transmission path, reduces power loss and wear of moving parts, and can efficiently and stably transmit force and motion to the moving contact 130.

[0077] From the above, it can be seen that the design of the slide groove 127a limits the movement range of the third connecting rod 126, so that the third connecting rod 126 can only slide in the slide groove 127a, and the sliding range of the third connecting rod 126 limits the movement range of the driving mechanism 11 between the first position where the moving contact 130 contacts the first static contact 131 and the second position where the moving contact 130 contacts the second static contact 132, and the moving contact 130 switches between the first static contact 131 and the second static contact 132.

[0078] When the driving mechanism 11 is in the first position or the second position, the third connecting rod 126 is located at one end of the slide slot 127a close to the third connecting rod 126. At this time, due to the design of the slide slot 127a, the third connecting rod 126 can no longer continue to rotate along the rotation direction, so that the moving contact 130 also stops rotating, thereby ensuring the stability and reliability of the contact closing state between the moving contact 130 and the corresponding static contact.

[0079] Further, when the driving mechanism 11 is in the first position or the second position, the angle θ between the axis of the third connecting rod 126 and the axis of the fourth connecting rod 127 is less than 90°. For example, the angle θ between the axis of the third connecting rod 126 and the axis of the fourth connecting rod 127 can be 75°, 60°, 45°, etc.

[0080] When the driving mechanism 11 moves from the first position to the second position, the third connecting rod 126 rotates clockwise around the output end of the driving mechanism 11, driving the fourth connecting rod 127 to rotate counterclockwise around its fixed connection point with the moving contact 130. At the same time, due to the restriction of the slide slot 127a, the third connecting rod 126 slides to the end of the slide slot 127a close to the third connecting rod 126, so that the third connecting rod 126 and the fourth connecting rod 127 cannot continue to rotate, thereby ensuring that the moving contact 130 can reliably stop rotating after reaching the closing position with the second static contact 132. At this time, when the moving contact 130 has a tendency to move from the second static contact 132 to the first static contact 131, that is, it has a tendency to drive the fourth connecting rod 127 to rotate clockwise, the fourth connecting rod 127 will also have a tendency to drive the third connecting rod 126 to rotate clockwise. However, due to the restriction of the slide slot 127a, the third connecting rod 126 cannot rotate clockwise.

[0081] Similarly, when the driving mechanism 11 moves from the second position to the first position, the third connecting rod 126 rotates counterclockwise around the output end of the driving mechanism 11, driving the fourth connecting rod 127 to rotate clockwise around its fixed connection point with the moving contact 130. At the same time, due to the restriction of the slide slot 127a, the third connecting rod 126 slides to the end of the slide slot 127a close to the third connecting rod 126, so that the third connecting rod 126 and the fourth connecting rod 127 cannot continue to rotate, thereby ensuring that the moving contact 130 can reliably stop rotating after reaching the closing position with the first static contact 131. At this time, when the moving contact 130 has a tendency to move from the first static contact 131 to the second static contact 132, that is, it has a tendency to drive the fourth connecting rod 127 to rotate counterclockwise, the fourth connecting rod 127 will also have a tendency to drive the third connecting rod 126 to rotate counterclockwise. However, due to the restriction of the slide slot 127a, the third connecting rod 126 cannot rotate counterclockwise. It should be noted that the clockwise and counterclockwise directions described in the embodiments of the present application are both Figure 1 Provided for reference.

[0082] Therefore, when the moving contact 130 moves to any closing position, the self-locking of the driving mechanism 11 is achieved through the design of the slide slot 127a and the angle θ between the axis of the third connecting rod 126 and the axis of the fourth connecting rod 127. This means that the moving contact 130 can be reliably and accurately locked in the closing position, and the fourth connecting rod 127 can only be driven to rotate by the third connecting rod 126, but not by the fourth connecting rod 127. Such a design ensures the safety of the transfer switch, prevents misoperation or accidental rotation, and ensures the reliable operation of the equipment.

[0083] On the other hand, the switching switch also includes a detection component, which includes a first detector 141 and a second detector 142 respectively connected to the driving mechanism 11, and the first detector 141 and the second detector 142 are respectively located on both sides of the power input end of the moving contact 130; in the present application, the first detector 141 is arranged close to the third static contact 133, and the second detector 142 is arranged close to the second static contact 132.

[0084] The first detector 141 is used to abut the moving contact 130 in linkage with the first stationary contact 131 when the moving contact 130 is in contact with the first stationary contact 131 , and the second detector 142 is used to abut the moving contact 130 in linkage with the second stationary contact 132 when the moving contact 130 is in contact with the second stationary contact 132 .

[0085] Taking the driving mechanism 11 including a motor as an example, the first detector 141 and the second detector 142 are respectively connected in series in the two circuits of the motor. Since the motor drives the contact assembly 130 to open and close through the transmission mechanism 12, the contact assembly 13 can open and close following the rotation of the motor. After closing, the motor is controlled to be closed through the detection assembly to avoid the current generated by the closing operation from burning the motor.

[0086] The detector may be a micro switch, a photoelectric switch or a Hall element, etc., and the linkage abutment between the moving contact 130 and the detector is realized through the second gear 123. Specifically, when the moving contact 130 rotates to contact with the first static contact 131 to close the switch, the abutment portion 123a of the second gear 123 connected to the moving contact 130 also abuts against the first detector 141 to trigger the first detector 141, and the motor is controlled to be turned off through the first detector 141.

[0087] Similarly, when the moving contact 130 rotates to contact the second static contact 132 to close the circuit, the abutting portion 123a of the second gear 123 simultaneously abuts against the second detector 142 to trigger the second detector 142, and the motor is controlled to be turned off through the second detector 142.

[0088] On this basis, an embodiment of the present application also includes an energy storage system, which includes the above-mentioned conversion switch.

[0089] The energy storage system includes the same structure and beneficial effects as the conversion switch in the aforementioned embodiment. The structure and beneficial effects of the conversion switch have been described in detail in the aforementioned embodiment and will not be repeated here.

[0090] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A transfer switch, characterized in that: The invention comprises a housing (10), wherein a driving mechanism (11), a transmission mechanism (12) and a contact assembly (13) are sequentially connected inside the housing (10), wherein the driving mechanism (11) drives the contact assembly (13) to open and close via the transmission mechanism (12), and in a first direction (F1), the driving mechanism (11) and the contact assembly (13) are located in the same plane; The contact assembly (13) comprises a moving contact (130) and a first stationary contact (131), a second stationary contact (132) and a third stationary contact (133) respectively matched with the moving contact (130); the transmission mechanism (12) is connected to the moving contact (130); and the moving contact (130) is connected to a load end via the third stationary contact (133).

2. The transfer switch according to claim 1, characterized in that: The first stationary contact (131) and the second stationary contact (132) are arranged along the first direction (F1), the third stationary contact (133), the movable contact (130), the first stationary contact (131) and the second stationary contact (132) are arranged along the second direction (F2), the transmission mechanism (12) is located along the third direction (F3) on another plane opposite to the contact assembly (13), and the first direction (F1), the second direction (F2) and the third direction (F3) are perpendicular to each other.

3. The transfer switch according to claim 2, characterized in that: A partition is provided in the housing (10) to divide the housing (10) along the third direction (F3) into a first cavity (101) and a second cavity (102) respectively located on both sides of the partition; the contact assembly (13) is located in the first cavity (101); and the drive mechanism (11) and the transmission mechanism (12) are located in a second cavity (102) opposite to the first cavity (101).

4. The transfer switch according to claim 2, characterized in that: The first stationary contact (131) and the second stationary contact (132) are located on the same side, and the third stationary contact (133) is located on the opposite side of the first stationary contact (131) and the second stationary contact (132); The projection (a) of the drive mechanism (11) along the first direction (F1) at least partially overlaps with the projection (b) of the contact assembly (13) along the first direction (F1), and the midline (m) of the projection (a) in the second direction (F2) passes through the area of ​​the projection (b).

5. The transfer switch according to claim 4, characterized in that: The number of the moving contact (130), the first stationary contact (131), the second stationary contact (132) and the third stationary contact (133) is one to form a single-pole main circuit, and in the first direction (F1), the extension distance of the third stationary contact (133) is greater than or equal to the distance between the first stationary contact (131) and the second stationary contact (132), so that when one end of the moving contact (130) contacts the first stationary contact (131) or the second stationary contact (132), the other end of the moving contact (130) contacts the third stationary contact (133) at the same time.

6. The transfer switch according to any one of claims 1 to 5, characterized in that: The driving mechanism (11) comprises a motor and a worm connected to the motor, the transmission mechanism (12) comprises a gear set, and the driving mechanism (11) is connected to the contact assembly (13) via the gear set; The gear set comprises a first gear (121) meshing with the worm and a second gear (123) connected to the contact assembly (13); the first gear (121) and the second gear (123) are meshed with each other via at least one transmission gear (122).

7. The transfer switch according to any one of claims 1 to 5, characterized in that: The driving mechanism (11) comprises a motor, the transmission mechanism (12) comprises a connecting rod assembly, and the driving mechanism (11) is connected to the contact assembly (13) via the connecting rod assembly; The connecting rod assembly includes a first connecting rod (124) and a second connecting rod (125) connected to each other, the first connecting rod (124) is also connected to the motor, and the second connecting rod (125) is also connected to the contact assembly (13), so as to form a four-bar linkage mechanism between the first connecting rod (124), the second connecting rod (125) and the contact assembly (13).

8. The transfer switch according to any one of claims 1 to 5, characterized in that: The driving mechanism (11) comprises a motor, the transmission mechanism (12) comprises a connecting rod assembly, and the driving mechanism (11) is connected to the contact assembly (13) via the connecting rod assembly; The connecting rod assembly comprises a third connecting rod (126) and a fourth connecting rod (127) connected to each other, the third connecting rod (126) is also connected to the motor, and the fourth connecting rod (127) is also connected to the contact assembly (13), so as to form a three-link mechanism between the third connecting rod (126), the fourth connecting rod (127) and the contact assembly (13); The fourth connecting rod (127) is provided with a slide groove (127a) extending along its axial direction, and the third connecting rod (126) is arranged in the slide groove (127a); when the moving contact (130) and the first static contact (131) or the second static contact (132) are in contact, the angle (θ) between the axis of the third connecting rod (126) and the axis of the fourth connecting rod (127) is less than 90°.

9. The transfer switch according to any one of claims 1 to 5, characterized in that: It also includes a detection component, the detection component including a first detector (141) and a second detector (142) respectively connected to the driving mechanism (11), the first detector (141) and the second detector (142) respectively being located on both sides of the power input end of the moving contact (130); When the moving contact (130) and the first stationary contact (131) are in contact, the first detector (141) is used to abut against the moving contact (130) in a linked manner; when the moving contact (130) and the second stationary contact (132) are in contact, the second detector (142) is used to abut against the moving contact (130) in a linked manner.

10. An energy storage system, characterized in that: A conversion switch comprising any one of claims 1 to 9.

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