Energy storage mechanism for double power conversion switch and double power conversion switch

Abstract

The present invention relates to an energy storage mechanism for a dual-power transfer switch, including a first energy storage device, a second energy storage device, and a driving device. The driving device is capable of rotating between predetermined angular positions, enabling the dual-power transfer switch to switch between a double-off position, a first position, and a second position. When the driving device is at different angular positions, the driving device interacts with only one of the first energy storage device or the second energy storage device. The present invention also relates to a dual-power transfer switch including such an energy storage mechanism.

Description

Technical Field

[0001] The present invention relates to an energy storage mechanism for a dual-power transfer switch, which has a simple structure and can achieve rapid opening and closing of the dual-power transfer switch without manual operation. The present invention also relates to a dual-power transfer switch including the energy storage mechanism. Background Art

[0002] The dual-power transfer switch was born in response to the requirement of the continuity of power supply. With the continuous deepening of people's requirements for power supply continuity, safety, and reliability, the application of dual-power transfer switches is becoming more and more widespread. In important public places where people are concentrated, such as hotels and theaters, power supply interruption will cause chaos and even endanger the lives of guests. Relevant industry standards stipulate that their power distribution systems must have an emergency power supply in addition to the normal power supply. The dual-power transfer switch can switch the power supply to the standby power supply when the normal power supply fails.

[0003] Dual-power transfer switches can be divided into two categories according to the form of their rotating shafts: single-axis dual-power transfer switches and double-axis dual-power transfer switches. A single-axis dual-power transfer switch only includes one rotating shaft, and the clockwise rotation and counterclockwise rotation of this rotating shaft respectively achieve the closing operations of the two power supplies. A double-axis dual-power transfer switch includes two rotating shafts, and the clockwise rotation and counterclockwise rotation of each rotating shaft respectively achieve the closing operation and opening operation of one power supply. Since the power system cannot supply power with two power supplies simultaneously, the dual-power transfer switch must be interlocked so that the two power supplies cannot be closed simultaneously. The single-axis dual-power transfer switch can ensure that only one of the two power supplies is closed, and will not cause the situation of both power supplies being closed simultaneously, that is, the single-axis dual-power transfer switch naturally has an interlock function.

[0004] In addition, as a key device to ensure power supply continuity, the electrical operation performance and load-carrying manual operation performance of the dual-power transfer switch are crucial. Rapid opening is a key factor to ensure the electrical operation performance of the dual-power transfer switch, and the opening and closing without manual operation can ensure the safety and reliability of the manual load-carrying operation of the dual-power transfer switch. The opening and closing without manual operation are usually achieved through an energy storage mechanism. Thus, to require rapid opening of the dual-power transfer switch also requires targeted design of the energy storage mechanism. However, the existing energy storage mechanisms of dual-power transfer switches have complex structures and relatively high manufacturing costs. Summary of the Invention

[0005] Therefore, the object of the present invention is to provide an energy storage mechanism for a dual-power transfer switch. The energy storage mechanism can particularly improve the opening and closing speeds of the dual-power transfer switch and improve the electrical operation performance. In addition, the energy storage mechanism is simple and stable, convenient for production and installation, thereby reducing the production cost and improving the market competitiveness of the product.

[0006] The above object is achieved by an energy storage mechanism for a dual-power transfer switch according to an embodiment of the present invention, which includes a driving device that can be driven by a driving force (such as a motor, an electromagnet, or manual force, etc.) to rotate between a first angular position, an intermediate angular position, and a second angular position, so that the dual-power transfer switch is switched between three positions, namely: a double-off position where both the first power supply and the second power supply are in the off state, and at this time the driving device is located at the intermediate angular position; a first position where the first power supply is in the on state and the second power supply is in the off state, and at this time the driving device is located at the first angular position; and a second position where the first power supply is in the off state and the second power supply is in the on state, and at this time the driving device is located at the second angular position opposite to the first angular position. The dual-power transfer switch further includes a first energy storage device and a second energy storage device. During the rotation of the driving device between the intermediate angular position and the first angular position, the driving device only interacts with the first energy storage device, and during the rotation of the driving device between the intermediate angular position and the second angular position, the driving device only interacts with the second energy storage device.

[0007] According to the above technical solution, the on states of the first power supply and the second power supply correspond to different angular positions of the driving device. Therefore, the first power supply and the second power supply cannot be in the on state simultaneously. That is to say, the energy storage mechanism of the present invention realizes the interlock of the dual-power transfer switch in a simple manner. At any moment, the driving device only interacts with one of the first energy storage device and the second energy storage device, which also reduces the possibility of operation errors. In addition, by only interacting with one energy storage device, the inertia of the dual-power transfer switch during the state conversion process can also be reduced, the movement acceleration at the initial stage of opening and closing can be increased, so that the moving contact can quickly separate from and connect to the static contact, thereby improving the electrical operation performance of the dual-power transfer switch.

[0008] According to a preferred embodiment of the present invention, during the conversion of the dual-power transfer switch from the double-off position to the first position, the driving device first rotates from the intermediate angular position towards the first angular position under the action of the driving force and drives the first energy storage device, so that the first energy storage device stores energy. After passing through the dead point position of the first energy storage device, the first energy storage device starts to release energy to drive the driving device to continue rotating in the same direction to the first angular position. During the conversion of the dual-power transfer switch from the first position back to the double-off position, the driving device first rotates from the first angular position towards the intermediate angular position under the action of the driving force and drives the first energy storage device, so that the first energy storage device stores energy. After passing through the dead point position, the first energy storage device starts to release energy to drive the driving device to continue rotating in the same direction to the intermediate angular position.

[0009] Similarly, during the process of the dual-power conversion switch converting from the double-off position to the second position, the driving device first rotates from the intermediate angular position towards the second angular position under the action of the driving force, and drives the second energy storage device, so that the second energy storage device stores energy. After passing through the dead point position of the second energy storage device, the second energy storage device starts to release energy to drive the driving device to continue rotating in the same direction to the second angular position. During the process of the dual-power conversion switch converting back from the second position to the double-off position, the driving device first rotates from the second angular position towards the intermediate angular position under the action of the driving force, and drives the second energy storage device, so that the second energy storage device stores energy. After passing through the dead point position, the second energy storage device starts to release energy to drive the driving device to continue rotating in the same direction to the intermediate angular position.

[0010] According to the above technical solution, both the first power source and the second power source start the closing operation and the opening operation by releasing energy from the energy storage device. Therefore, the closing operation and the opening operation of the first power source and the second power source can be performed after the driving force is removed, so they are independent of the driving force, that is, independent of manual operation.

[0011] According to a preferred embodiment of the present invention, when not interacting with the driving device, the first energy storage device and the second energy storage device are maintained in a stable fixed position. That is to say, when the dual-power conversion switch performs a closing or opening operation on the first power source, the second energy storage device is maintained in a stable fixed position. Similarly, when the dual-power conversion switch performs a closing or opening operation on the second power source, the first energy storage device is maintained in a stable fixed position. According to the above technical solution, it can be ensured that the position where the interaction between the driving device and the first energy storage device or the second energy storage device starts is stable, eliminating the uncertainty in the operation of the energy storage mechanism.

[0012] According to a preferred embodiment of the present invention, the driving device of the energy storage mechanism includes a driving disk, and the first energy storage device and the second energy storage device respectively include a spring support assembly. The spring support assembly includes: a spring seat, and the spring support assembly is pivotally mounted on the frame of the dual-power conversion switch through the spring seat; a spring for storing and releasing energy; a support link, one end of the support link includes a head for engaging with the driving disk, and the other end of the support link is mounted to the spring seat so that the support link can longitudinally translate relative to the spring seat, and the spring is sleeved on the support link. Preferably, the spring is a compression spring, and as the spring support assembly rotates, the spring can be compressed and extended along the support link.

[0013] According to a preferred embodiment of the present invention, the central axis of the drive plate is parallel to the axis of the pivot about which the spring support assembly pivots, and the dead point position is at an angular position where the center of the drive plate and the line connecting the pivot are located.

[0014] According to a preferred embodiment of the present invention, two actuating pins are arranged on the driving disk, corresponding to one of the two spring support assemblies respectively. The support connecting rod of the spring support assembly includes a head provided with an actuating groove. When the driving disk is in the middle angular position, the corresponding actuating pin can be received in the corresponding actuating groove, and when the driving disk rotates from the middle angular position toward the first angular position, the actuating pin corresponding to the first energy storage device remains in the actuating groove and actuates the spring to store energy, while the actuating pin corresponding to the second energy storage device rotates away from the actuating groove. When the driving disk rotates from the middle angular position toward the second angular position, the actuating pin corresponding to the second energy storage device remains in the actuating groove and actuates the spring to store energy, while the actuating pin corresponding to the first energy storage device rotates away from the actuating groove. Preferably, during the action of the spring support assembly, the corresponding actuating pin remains received in the corresponding actuating groove and does not escape from the actuating groove.

[0015] According to the above technical solution, the driving disk and the first energy storage device and the second energy storage device can achieve stable interaction through the actuating pin and the actuating slot, thereby enhancing the reliability of the operation of the energy storage mechanism. In addition, the actuating pin and the actuating slot can ensure that the driving disk interacts with only one of the first energy storage device and the second energy storage device at the same time, thereby reducing the inertia of the dual power conversion switch during the state conversion process.

[0016] According to a preferred embodiment of the present invention, the support link is provided with a longitudinally extending slide groove, the spring seat includes a fixing pin, and the slide groove is sleeved on the fixing pin, so that the support link can longitudinally translate relative to the spring seat.

[0017] According to a preferred embodiment of the present invention, a spring is sleeved on the bracket connecting rod, one end of the spring is pressed against the head, and the other end is pressed against the spring seat. As the fixing pin slides toward the head, the spring is compressed and stores energy, and as the fixing pin slides away from the head, the spring stretches and releases energy. When the fixing pin is at the position closest to the head, the spring is compressed to the shortest. At this time, the energy stored in the spring reaches the maximum. When the fixing pin is at the position farthest from the head, the spring stretches to the longest. At this time, the energy released by the spring is the most.

[0018] According to the above technical solution, the rotation of the spring support assembly can cause the spring to compress or stretch, thereby realizing energy storage and energy release of the energy storage device in a simple and reliable manner.

[0019] According to a preferred embodiment of the present invention, the dual power source transfer switch further includes two limit pins fixed to the frame of the dual power source transfer switch, respectively for one of the first energy storage device and the second energy storage device, and the head of the bracket link further includes a limit groove. When the corresponding power source is in the off state, the limit pin is received in the limit groove, so that the spring bracket assembly can stop stably and wait for the action of the drive disk.

[0020] According to the above technical solution, when the power source is in the off state, the position of the spring bracket assembly is firmly fixed, so that the uncertainty in the operation of the energy storage mechanism can be eliminated.

[0021] The present invention also relates to a dual power source transfer switch, which includes the energy storage mechanism as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0023] Figures 1A - 1C Shows a schematic diagram of the principle of the energy storage mechanism of the dual power source transfer switch according to an embodiment of the present invention;

[0024] Figure 2 Shows a schematic diagram of the energy storage mechanism according to an embodiment of the present invention;

[0025] Figure 3A and 3B Shows an exploded view and an assembled view of the spring bracket assembly according to an embodiment of the present invention;

[0026] Figures 4A - 4D Shows Figure 2 Schematic diagrams of different positions of the shown energy storage mechanism during operation.

[0027] LIST OF REFERENCE NUMERALS

[0028] 1 First energy storage device

[0029] 1’ Second energy storage device

[0030] 2 Drive device

[0031] 10 Spring bracket assembly

[0032] 11 Spring

[0033] 12 Spring seat

[0034] 13 Fixed pin

[0035] 14 Bracket link

[0036] 15 chute

[0037] 20 drive disk

[0038] 21 actuating pin

[0039] 30 limiting pin

[0040] 16 head

[0041] 161 actuating groove

[0042] 162 limiting groove Detailed implementation manner

[0043] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0044] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second", and similar terms used in the description of the present invention's patent application specification and claims do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not necessarily denote a quantity limitation. The terms "including" or "comprising" and similar terms mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0045] The energy storage mechanism of the dual-power conversion switch according to the content of the present invention will be specifically described below with reference to the drawings.

[0046] It should be noted that the "dual power conversion switch" described in the present invention refers to a mechanism of a switching switch that selects one from two power sources, and can automatically or manually switch the load circuit from the first (main) power source to the second (standby) power source. The "switch operation" described in the present invention includes, but is not limited to, the closing (i.e., "on" or "connected") and opening (i.e., "off" or "disconnected") operations of the power source. In the on or closed position, the moving contact touches the static contact, and at this time the power source is connected to the load and supplies power to the load; in the off or open position, the moving contact does not touch the static contact, and at this time the power source is disconnected from the load and does not supply power to the load.

[0047] Figures 1A - 1C The schematic diagram of the principle of the energy storage mechanism of the dual power conversion switch according to an embodiment of the present invention is shown. For clarity, in all the drawings of the present application, the parts of the dual power conversion switch that are not related to the technical solution of the present invention are omitted.

[0048] The energy storage mechanism according to an embodiment of the present invention includes: a first energy storage device 1, a second energy storage device 1', and a driving device 2 shared by the first energy storage device 1 and the second energy storage device 1'. As Figures 1A - 1C shown, the driving device 2 can rotate between a first angular position, an intermediate angular position, and a second angular position, so that the dual power conversion switch can be switched between three positions, namely the double-off position where both the first power source and the second power source are in the off state, see Figure 1A , at this time the driving device 2 is located at the intermediate angular position; the first position where the first power source is in the on state and the second power source is in the off state, see Figure 1C , at this time the driving device 2 is located at the first angular position, and the second position where the first power source is in the off state and the second power source is in the on state, at this time the driving device 2 is located at the second angular position opposite to the first angular position (not shown in the drawings). Figure 1B shows the intermediate state where the driving device 2 rotates from the Figure 1A intermediate angular position to the Figure 1C first angular position, at this time the driving device 2 is located at the dead point position. During the Figures 1A - 1C shown process, the driving device 2 only interacts with the first energy storage device 1. Similarly, during the rotation of the driving device 2 between the intermediate angular position and the second angular position, the driving device 2 only interacts with the second energy storage device 1'.

[0049] Specifically, during the conversion of the dual power conversion switch from the double-off position ( Figure 1A ) to the first position ( Figure 1C ), the driving device 2 first rotates from the intermediate angular position towards the first angular position under the action of a driving force (for example, external forces such as a motor, an electromagnet, or human power), driving the first energy storage device 1 to store energy. DuringFigure 1B In the state shown, the first energy storage device 1 is at a dead point position, at which the stored energy is the largest. After passing the dead point position, the first energy storage device 1 starts to release energy and drives the drive device 2 to continue rotating, and drives the first power supply to close until the drive device 2 rotates to Figure 1C The first angle position is shown. When the first energy storage device 1 starts to release energy, the driving force can be removed, and the driving device 2 can be completely driven by the first energy storage device 1. Therefore, the dual power conversion switch can realize opening and closing regardless of human operation.

[0050] The reverse process of the above process is to change the dual power switch from the first position ( Figure 1C ) switches back to the double split position ( Figure 1A ) process. Specifically, the drive device 2 is Figure 1C The first angular position shown first rotates from the first angular position toward the intermediate angular position under the action of the driving force, and drives the first energy storage device 1 so that the first energy storage device 1 stores energy. After passing the dead point position, the first energy storage device 1 begins to release energy to drive the driving device 2 to continue rotating in the same direction to the intermediate angular position.

[0051] Although not shown in the accompanying drawings, the operation process of the second energy storage device 1' of the energy storage mechanism is similar to the operation process of the first energy storage device 1, but in the opposite direction. Specifically, in the process of the dual power conversion switch from the dual split position to the second position, the drive device 2 first rotates from the middle angle position to the second angle position under the action of the driving force, and drives the second energy storage device 1' to store energy. After passing the dead point position of the second energy storage device, the second energy storage device 1' begins to release energy to drive the drive device 2 to continue to rotate to the second angle position in the same direction. In the process of the dual power conversion switch from the second position to the dual split position, the drive device 2 first rotates from the second angle position to the middle angle position under the action of the driving force, and drives the second energy storage device 1' to store energy. After passing the dead point position, the second energy storage device 1' begins to release energy to drive the drive device 2 to continue to rotate to the middle angle position in the same direction. When the second energy storage device 1' begins to release energy, the driving force can be removed, and the drive device 2 can be completely driven by the first energy storage device 1'. Therefore, the dual power transfer switch can realize opening and closing without human operation.

[0052] Figure 2 An embodiment of the energy storage mechanism schematically depicted in FIG1 is shown. It should be understood that the energy storage mechanism can be implemented in any possible manner, and is not limited to Figure 2 The embodiment shown.

[0053] like Figure 2As shown, the driving device 2 of the energy storage mechanism includes a driving disk 20, and the first energy storage device 1 and the second energy storage device 1' each include a spring support assembly 10. The energy storage mechanism further includes two limit pins 30 fixed to the frame.

[0054] The driving disk 20 is generally in the shape of a ring and includes two actuating pins 21, which are respectively used for the two spring support assemblies 10. The driving disk 20 can rotate around a rotating shaft passing through its central ring, and can drive the moving contacts and static contacts of the first power source or the second power source to open and close at different angular positions. The limit pins 30 can stably stop the spring support assembly 10 at a position to wait for the next action.

[0055] Reference Figure 3A and Figure 3B , the spring support assembly 10 includes: a spring 11, a spring seat 12 and a support link 14. The spring 11 is sleeved on the support link 14 and can be compressed and extended along the longitudinal direction of the support link 14 to store and release energy. The spring seat 12 is pivotally mounted on the frame of the double power conversion switch, so that the spring support assembly 10 can pivot through the spring seat 12. The spring seat 12 has a generally U-shaped form and has coaxial through holes 121 on its two side walls. In Figure 3A the illustrated embodiment, the pivot shaft for the spring seat 12 to pivot is a fixed pin 13 installed on the frame of the double power conversion switch through the through holes 121. The fixed pin 13 is installed by threading, for example. As described above, the spring support assembly 10 rotates around the fixed pin 13 through interaction with the driving disk 20. A through cut (not shown) for one end of the support link 14 to pass through is also provided on the bottom of the spring seat 12, so that the support link 14 can longitudinally translate relative to the spring seat 12.

[0056] In this embodiment, the spring 11 is a mechanical compression spring. As the spring support assembly 10 rotates, the spring 11 can be compressed and extended along the support link 14. Optionally, the spring 11 can also be in the form of a pneumatic spring or other elastic elements.

[0057] In this embodiment, as Figure 3A shown, the support link 14 is generally in the shape of a rectangular rod, one end of which includes an integrally formed head 16, and the other end passes through the through cut of the spring seat 12. Optionally, the head 16 can also be separated from the support link 14 and fixedly connected together by welding, threading, etc. The support link 14 is also provided with a chute 15 extending along its longitudinal direction, which is away from the head 16. The chute 15 has a runway shape, and its width is slightly larger than the diameter of the fixed pin 13. When the spring support assembly 10 rotates around the fixed pin 13, the support link 14 can be pushed by the driving disk 20 to displace relative to the spring seat 12. At this time, the fixed pin 13 slides in the chute 15. ReferenceFigure 3B The spring 11 is sleeved on the support link 14, with one end pressing against the head 16 and the other end pressing against the spring seat 12.

[0058] As Figure 3A shown, the head 16 defines an actuation groove 161 and a limit groove 162 that are specially designed in terms of position and orientation through three fingers. When the spring support assembly 10 does not interact with the drive disk 20, the limit pin 30 is received in the limit groove 162, and the spring support assembly 10 can stop stably. When actuation is required, the rotation of the drive disk 20 can cause the actuation pin 21 to be received in the actuation groove 161, thereby actuating the spring support assembly 10. When the drive disk 20 rotates in the opposite direction and returns to the same angular position, the limit pin 30 is again received in the limit groove 162, enabling the spring support assembly 10 to stably stay in this position.

[0059] Next, refer to Figures 4A - 4D the Figure 2 operation process of the energy storage mechanism of the dual-power conversion switch shown. For clarity, Figures 4A - 4C only one spring support assembly 10 is shown. Without loss of generality, it can be assumed that it corresponds to the first energy storage device 1 for the opening and closing operations of the first power supply.

[0060] Figure 4A The energy storage mechanism in the double-open position is shown. At this time, both the first power supply and the second power supply are in the open position, and the first energy storage device 1 is in the initial state, that is, Figure 4A and Figure 1A correspond to each other. The spring support assembly 10 is held fixed by the limit pin 30 being received in the limit groove 162. Although the actuation pin 21 has entered the actuation groove 161, it has not yet come into contact with the actuation groove 161, that is, the spring support assembly 10 has not yet interacted with the drive disk 20. The fixing pin 13 is located at a position in the sliding groove 15 far from the head 16. Correspondingly, the spring 11 is in a stretched state.

[0061] When closing the first power supply, the drive disk 20 rotates counterclockwise under the drive of an externally applied driving force. The distance between the actuation pin 21 and the fixing pin 13 becomes smaller and it comes into contact with the actuation groove 161. At this time, the drive disk 20 starts to drive the spring support assembly 10, causing the limit pin 30 to disengage from the limit groove 162. At the same time, the fixing pin 13 will slide in the sliding groove 15 towards the head 16, causing the spring 11 to be compressed and store energy. The torque exerted by the spring 11 on the drive disk 20 is in the clockwise direction, opposing the rotation of the drive disk 20. Figure 4B The energy storage mechanism during the conversion process is shown, where the first power supply is still in the open position.

[0062] As the drive disk 20 continues to rotate counterclockwise under the drive of an external force, the actuation pin 21 rotates toFigure 4C The position with the minimum distance from the fixed pin 13 as shown. At this position, the connecting line between the actuating pin 21 and the fixed pin 13 passes through the center of the driving disk 20. At this time, the fixed pin 13 reaches the position closest to the head 16, the spring 11 is compressed by the largest amount, and the most energy is stored. The force exerted by the spring 11 points to the center of the driving disk 20, that is, the spring 11 does not exert a moment on the rotation of the driving disk 20. This position is the dead point position of the first energy storage device 1.

[0063] Once the driving disk 20 rotates counterclockwise past the Figure 4C shown dead point position, the driving disk 20 continues to rotate counterclockwise under the drive of the spring 11 stretching and releasing energy, and drives the closing of the first power supply. Specifically, after passing the dead point position, the distance between the actuating pin 21 and the fixed pin 13 will gradually increase. The fixed pin 13 will slide away from the head 16 in the chute 15, causing the spring 11 to stretch and release the previously stored energy. The moment exerted by the spring 11 on the driving disk 20 becomes counterclockwise, so as to be able to drive the counterclockwise rotation of the driving disk 20. In addition, after passing the dead point position, the external force can be removed, and the driving disk 20 continues to rotate in the same direction only under the drive of the spring 11.

[0064] At the Figure 4D shown position, the first power supply completes closing. At this time, the fixed pin 13 slides to the position farthest from the head 16 in the chute 15. The spring 11 extends to the longest, and the stored energy is completely released and enters the energy release state. The driving disk 20 then rotates to the first angular position. Figure 4D and Figure 1C correspond to each other.

[0065] When the first power supply in the closed state is opened, the energy storage mechanism will return from the Figure 4D shown state to the Figure 4A shown state. Specifically, it is necessary to first drive the driving disk 20 by an external force to rotate it clockwise, and the spring 11 is compressed and stores energy during this process. After passing the Figure 4C dead point position, the spring 11 releases energy and drives the driving disk 20 to continue rotating clockwise to drive the opening of the first power supply. As the driving disk 20 rotates clockwise, the limit groove 162 starts to receive the limit pin 30 until the driving disk 20 rotates back to the Figure 4A shown position. At this time, the position of the driving disk 20 is fixed by the limit pin 30, the first energy storage device 1 returns to its initial state, and the first power supply completes opening. Similarly, after passing the dead point position, the external force can be removed.

[0066] When starting from the Figures 4A to 4DDuring the entire conversion process, the actuating pin 21 of the drive disk 20 is always received within the actuating slot 161 and does not disengage therefrom. Additionally, during the entire conversion process, the drive disk 20 does not interact with the other spring bracket assembly 10. As Figure 4D shown, the other spring bracket assembly 10 is held fixed by the limit pin 30.

[0067] Based on the above structure, those skilled in the art can understand that when the opening and closing operations of the second power supply are required, the operation process of the energy storage mechanism is similar to the above process, except that the drive disk 20 rotates in the opposite direction and the drive disk 20 interacts with the other spring bracket assembly 10.

[0068] An embodiment of the present invention further provides a dual-power conversion switch, which includes the energy storage mechanism as described above.

[0069] In summary, the embodiments of the present invention provide an energy storage mechanism for a dual-power conversion switch and a dual-power conversion switch including the energy storage mechanism. The energy storage mechanism can reduce the inertia of the dual-power conversion switch during the state conversion process, improve the motion acceleration at the initial stage of power opening and closing, enable the moving contact of the power supply to quickly separate from and connect to the static contact, and improve the electrical operation performance. In addition, the structure of the energy storage mechanism is simple and stable, which is convenient for production and installation, thereby reducing the production cost of the dual-power conversion switch and improving the market competitiveness of the product.

[0070] The above is only the specific implementation manner of the present invention, but the protection scope of the embodiments of the present invention is not limited thereto. Any changes, substitutions, or combinations that can be easily thought of by those skilled in the art within the technical scope disclosed by the embodiments of the present invention or under the idea disclosed by the embodiments of the present invention should be covered within the protection scope of the embodiments of the present invention.

Claims

1. An energy storage mechanism for a dual-power conversion switch, characterized in that, The energy storage mechanism includes a driving device (2) that can be driven by a driving force to rotate between a first angular position, an intermediate angular position, and a second angular position, thereby causing the dual-power conversion switch to switch between three positions, namely: A double-off position where both the first power supply and the second power supply are in the off state, and at this time the driving device (2) is located at the intermediate angular position; A first position where the first power supply is in the on state and the second power supply is in the off state, and at this time the driving device (2) is located at the first angular position; and A second position where the first power supply is in the off state and the second power supply is in the on state, and at this time the driving device (2) is located at the second angular position opposite to the first angular position. The energy storage mechanism further includes a first energy storage device (1) and a second energy storage device (1'); During the process of the driving device (2) rotating between the intermediate angular position and the first angular position, the driving device (2) only interacts with the first energy storage device (1), and during the process of the driving device (2) rotating between the intermediate angular position and the second angular position, the driving device (2) only interacts with the second energy storage device (1'). The driving device (2) includes a driving disk (20), and the first energy storage device (1) and the second energy storage device (1') respectively include a spring support assembly (10), and the spring support assembly (10) includes: A spring seat (12), and the spring support assembly (10) is pivotally mounted on the frame of the dual-power conversion switch through the spring seat (12); A spring (11) for storing and releasing energy; A support link (14), one end of the support link (14) includes a head (16) for engaging with the driving disk (20), the other end of the support link (14) is mounted to the spring seat (12) such that the support link (14) can longitudinally translate relative to the spring seat (12), the spring (11) is sleeved on the support link (14), and The driving disk (20) is provided with two actuating pins (21), each corresponding to one of the two spring support assemblies (10), the head (16) of the support link (14) is provided with an actuating groove (161), and when the driving disk is at the intermediate angular position, the corresponding actuating pin (21) can be received in the corresponding actuating groove (161). When the driving disk (20) rotates in the direction from the intermediate angular position towards the first angular position, the actuating pin (21) corresponding to the first energy storage device (1) remains in the actuating groove (161) and actuates the spring (11) to store energy, while the actuating pin (21) corresponding to the second energy storage device (1') rotates out of the actuating groove (161), and when the driving disk (20) rotates in the direction from the intermediate angular position towards the second angular position, the actuating pin (21) corresponding to the second energy storage device (1') remains in the actuating groove (161) and actuates the spring (11) to store energy, while the actuating pin (21) corresponding to the first energy storage device (1) rotates out of the actuating groove (161).

2. The energy storage mechanism according to claim 1, wherein During the process of the double-power conversion switch converting from the double-off position to the first position, the driving device (2) first rotates from the middle angular position towards the first angular position under the action of the driving force, and drives the first energy storage device (1) so that the first energy storage device (1) stores energy. After passing through the dead point position of the first energy storage device (1), the first energy storage device (1) starts to release energy to drive the driving device (2) to continue rotating in the same direction to the first angular position, and during the process of the double-power conversion switch converting back from the first position to the double-off position, the driving device (2) first rotates from the first angular position towards the middle angular position under the action of the driving force, and drives the first energy storage device (1) so that the first energy storage device (1) stores energy. After passing through the dead point position, the first energy storage device (1) starts to release energy to drive the driving device (2) to continue rotating in the same direction to the middle angular position.

3. The energy storage mechanism according to claim 2, wherein during the process of the double-power conversion switch converting from the double-off position to the second position, the driving device (2) first rotates from the middle angular position towards the second angular position under the action of the driving force, and drives the second energy storage device (1') so that the second energy storage device (1') stores energy. After passing through the dead point position of the second energy storage device, the second energy storage device (1') starts to release energy to drive the driving device (2) to continue rotating in the same direction to the second angular position, and during the process of the double-power conversion switch converting back from the second position to the double-off position, the driving device (2) first rotates from the second angular position towards the middle angular position under the action of the driving force, and drives the second energy storage device (1') so that the second energy storage device (1') stores energy. After passing through the dead point position, the second energy storage device (1') starts to release energy to drive the driving device (2) to continue rotating in the same direction to the middle angular position.

4. The energy storage mechanism according to claim 1, wherein when not interacting with the driving device (2), the first energy storage device (1) and the second energy storage device (1') are held in stable fixed positions.

5. The energy storage mechanism according to claim 2, wherein the central axis of the driving disk (20) is parallel to the axis of the pivot around which the spring support assembly (10) pivots, and the dead point position is at the angular position where the line connecting the center of the driving disk (20) and the pivot is located.

6. The energy storage mechanism according to claim 1, wherein during the operation of the spring support assembly (10), the corresponding actuating pin (21) remains received in the corresponding actuating groove (161) without disengaging from the actuating groove (161).

7. The energy storage mechanism according to claim 1, wherein The support link (14) is provided with a longitudinally extending sliding groove (151), the spring seat (12) includes a fixing pin (13), and the sliding groove (151) is sleeved on the fixing pin (13), so that the support link (14) can longitudinally translate relative to the spring seat (12).

8. The energy storage mechanism according to claim 7, wherein One end of the spring (11) abuts against the head (16), and the other end abuts against the spring seat (12). As the fixing pin (13) slides towards the head (16), the spring (11) is compressed and stores energy. As the fixing pin (13) slides away from the head (16), the spring (11) extends and releases energy.

9. The energy storage mechanism according to claim 1, wherein The energy storage mechanism further includes two limit pins (30) fixed to the frame of the dual-power conversion switch, respectively for one of the two spring support assemblies (10), and the head (16) of the support link (14) further includes a limit groove (162). When the corresponding spring support assembly (10) does not interact with the drive disk (20), the limit pin (30) is received in the limit groove (162) to stably hold the spring support assembly.

10. A dual-power conversion switch, characterized in that, The dual-power conversion switch includes the energy storage mechanism according to any one of claims 1-9.

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