A power supply automatic switching device

Abstract

This utility model discloses an automatic power switching device, including a housing. Inside the housing are a switching component and a triggering component. The switching component includes a connecting electrode, a bushing, an insulating connecting rod, a crossbar, a spare power supply plate, and a regular power supply plate. The triggering component includes a housing, a coil, a spring, a permanent magnet, a fixing plate, and a magnetic core. This utility model, through the permanent magnet, coil, spring, regular power supply plate, and spare power supply plate, causes the insulating connecting rod to rotate, quickly switching the connection state between the spare and regular power supply electrodes, shortening the power outage time of the power transmission circuit. This device can prevent overcharging of the battery when it is connected to the grid power supply for a long time, avoiding problems such as increased internal battery pressure, battery deformation, and leakage, thereby improving battery life and enhancing safety.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, specifically relating to an automatic power switching device. Background Technology

[0002] With the popularization of photovoltaic technology, its application scope has gradually expanded to fields such as lighting, agriculture, drones, and testing equipment. Testing equipment, such as surveillance, earthquake monitoring, water level monitoring, and temperature and humidity monitoring equipment, requires continuous power to ensure the transmission of monitoring information. Currently, a common method is to convert the mains power supply into low-voltage DC power usable by the testing equipment via a transformer switching power supply and connect it to a battery. This battery is also connected to the photovoltaic panels. Under sufficient sunlight, the monitoring equipment is directly powered by the converted photovoltaic power, and the battery is charged by two currents: one from the grid and the other from the converted photovoltaic power. This can lead to overcharging of the battery, reducing its lifespan. Utility Model Content

[0003] This utility model provides an automatic power switching device to solve the problem in the prior art where, under sufficient sunlight, the monitoring equipment is directly powered by photovoltaic power after conversion, and the battery is charged by two currents: one from the power grid and the other from photovoltaic power after conversion. This can lead to overcharging of the battery and reduce its lifespan.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] This utility model provides an automatic power switching device, including a housing (1). The housing (1) is provided with a switching component (2) and a triggering component (3). The switching component (2) includes a converging electrode (201), a bushing (202), an insulating connecting rod (203), a crossbar (204), a spare power transmission piece (205), and a commonly used power transmission piece (206). One end of the converging electrode (201) is fixedly connected to the bottom inner wall of the housing (1). The bushing (202) is movably sleeved on the side surface of the converging electrode (201) through a bearing. The insulating connecting rod (203) is fixedly connected to the side surface of the bushing (202). The crossbar (204) is fixedly connected to the other end of the insulating connecting rod (203). The spare power transmission piece (205) is fixedly connected to one end of the crossbar (204), and the commonly used power transmission piece (206) is fixedly connected to the other end of the crossbar (204).

[0006] The triggering assembly (3) includes a housing (301), a coil (302), a spring (303), a permanent magnet (304), a fixing plate (305), and a magnetic core (306). The magnetic core (306) is fixedly connected to the inner wall of the opposite side of the housing (301). The coil (302) is fixedly sleeved on the side surface of the magnetic core (306) and the inner wall of the housing (301). The permanent magnet (304) is fixedly connected to the inner wall of the bottom of the housing (1). The fixing plate (305) is fixedly connected to the inner wall of the bottom of the housing (1). The spring (303) is fixedly connected to the side of the fixing plate (305) opposite to the insulating connecting rod (203).

[0007] In a preferred embodiment of the present invention, a common power transmission electrode (4) is fixedly connected to the bottom inner wall of the housing (1), a spare power transmission electrode (5) is fixedly connected to the bottom inner wall of the housing (1), and clips (6) are fixedly connected to the top of the common power transmission electrode (4), the spare power transmission electrode (5) and the converging electrode (201).

[0008] In a preferred embodiment of the present invention, a threaded post (7) is fixedly connected to the top of the clamping piece (6), and a fastening button (8) is threadedly connected to the threaded post (7), and a clamping ring (9) is fixedly connected to the bottom of the fastening button (8).

[0009] In a preferred embodiment of the present invention, the four corners of the bottom inner wall of the housing (1) are respectively fixedly connected with internal threaded columns (13), and the interior of the internal threaded columns (13) is connected with bolts (12) by threads. The top of the housing (1) is provided with a cover plate (10), and the cover plate (10) is fixedly connected to the housing (1) by the bolts (12) and the internal threaded columns (13).

[0010] In a preferred embodiment of this utility model, the cover plate (10) has a plurality of through holes (11) inside, and the plurality of through holes (11) are respectively sleeved on the confluence electrode (201), the commonly used power transmission electrode (4) and the spare power transmission electrode (5).

[0011] In a preferred embodiment of this utility model, the crossbar (204), the spare power transmission piece (205), and the commonly used power transmission piece (206) are combined in a U-shaped structure. The spare power transmission piece (205) and the commonly used power transmission piece (206) are both made of elastically deformable metal. The spare power transmission piece (205) and the commonly used power transmission piece (206) are electrically connected to the coils (302) on the same side of each other. The two coils (302) are connected in parallel and one end is electrically connected to the converging electrode (201).

[0012] In a preferred embodiment of this utility model, the two coils (302) are on the same pole on the side that is close to each other, and the two permanent magnets (304) are on the same pole on the side that is close to each other.

[0013] Compared with the prior art, the present invention provides an automatic power switching device, which has the following beneficial effects: (1) The present invention can avoid overcharging of the battery when it is connected to the grid power supply for a long time, and avoid the occurrence of battery internal pressure increase, battery deformation, leakage and other situations, thereby improving the service life of the battery and enhancing safety. (2) The permanent magnet, coil, spring, common power transmission plate and spare power transmission plate in the present invention enable the connection state of the spare power transmission electrode and the common power transmission electrode to be quickly switched after the insulating connecting rod rotates, shortening the power outage time of the power transmission circuit. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the appearance of a power switching device provided in an embodiment of this application.

[0016] Figure 2 This is an exploded view of a power switching device provided in an embodiment of this application.

[0017] Figure 3 This is a partial cross-sectional schematic diagram of a power switching device provided in an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the internal structure of a power switching device housing provided in an embodiment of this application.

[0019] Figure 5 This is a schematic diagram of a circuit structure in the prior art.

[0020] Figure 6 This is a schematic diagram of the circuit structure of a power switching device provided in an embodiment of this application.

[0021] Reference numerals: 1. Housing; 2. Switching assembly; 3. Triggering assembly; 4. Standard power supply electrode; 5. Spare power supply electrode; 6. Clamping plate; 7. Threaded post; 8. Fastening button; 9. Clamping ring; 10. Cover plate; 11. Through hole; 12. Bolt; 13. Internal threaded post; 201. Merging electrode; 202. Bushing; 203. Insulating connecting rod; 204. Crossbar; 205. Spare power supply piece; 206. Standard power supply piece; 301. Sleeve; 302. Coil; 303. Spring; 304. Permanent magnet; 305. Fixing plate; 306. Magnetic core. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The terms "upper," "lower," "front," "rear," "left," and "right," etc., used when describing the installation position or direction of the structure or components in this embodiment are based on the orientation shown in the accompanying drawings. They are merely for convenience of description, used to distinguish the relative positions of various components or directions, and do not represent the orientation of the device or functional component in this embodiment during use.

[0023] like Figures 1-4 As shown, this utility model embodiment provides a power switching device, including a housing 1, a switching component 2 and a triggering component 3 disposed inside the housing 1. The switching component 2 includes a converging electrode 201, a bushing 202, an insulating connecting rod 203, a crossbar 204, a spare power transmission piece 205, and a commonly used power transmission piece 206. One end of the converging electrode 201 is fixedly connected to the bottom inner wall of the housing 1. The bushing 202 is movably sleeved on the side surface of the converging electrode 201 through a bearing. The insulating connecting rod 203 is fixedly connected to the side surface of the bushing 202. The other end of the insulating connecting rod 203 is fixedly connected to the crossbar 204. The spare power transmission piece 205 is fixedly connected to one end of the crossbar 204, and the commonly used power transmission piece 206 is fixedly connected to the other end of the crossbar 204.

[0024] like Figure 2 , Figure 3 and Figure 4 As shown, the trigger assembly 3 includes a housing 301, a coil 302, a spring 303, a permanent magnet 304, a fixing plate 305, and a magnetic core 306. The magnetic core 306 is fixedly connected to the inner wall of the opposite side of the housing 301. The coil 302 is fixedly sleeved on the side surface of the magnetic core 306 and the inner wall of the housing 301. The permanent magnet 304 is fixedly connected to the inner wall of the bottom of the housing 1. The fixing plate 305 is fixedly connected to the inner wall of the bottom of the housing 1. The spring 303 is fixedly connected to the side of the fixing plate 305 opposite to the insulating connecting rod 203.

[0025] like Figure 1 , Figure 2 and Figure 4As shown, a common power transmission electrode 4 is fixedly connected to the bottom inner wall of the housing 1, and a spare power transmission electrode 5 is fixedly connected to the bottom inner wall of the housing 1. Clips 6 are fixedly connected to the top of the common power transmission electrode 4, the spare power transmission electrode 5, and the converging electrode 201. A threaded post 7 is fixedly connected to the top of the clip 6, and a fastening button 8 is threadedly connected to the threaded post 7. A clamping ring 9 is fixedly connected to the bottom of the fastening button 8. Internally threaded posts 13 are fixedly connected to the four corners of the bottom inner wall of the housing 1, and bolts 12 are threadedly connected to the inside of the internally threaded posts 13. A cover plate 10 is provided on the top of the housing 1, and the cover plate 10 is fixedly connected to the housing 1 by bolts 12 and internally threaded posts 13. Through holes 11 are opened inside the cover plate 10, and multiple through holes 11 are respectively fitted onto the converging electrode 201, the common power transmission electrode 4, and the spare power transmission electrode 5.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the crossbar 204, the spare power transmission piece 205, and the regular power transmission piece 206 are combined in a U-shaped structure. Both the spare power transmission piece 205 and the regular power transmission piece 206 are made of elastically deformable metal. The spare power transmission piece 205 and the regular power transmission piece 206 are electrically connected to the coil 302 on the same side of each of them. The two coils 302 are connected in parallel and one end is electrically connected to the converging electrode 201. When the photovoltaic system's battery is depleted, the coil 302 on the same side as the commonly used transmission piece 206 is de-energized, the electromagnetic force disappears, and the permanent magnet 304 loses its attraction to the coil 302. Simultaneously, the spring 303 on the same side releases its accumulated potential energy. Meanwhile, the spring 303 on the other side, which was originally stretched and generating a pulling force, experiences a greater attraction between the permanent magnet 304 and the coil 302 than the combined force of the two springs 303 and the elastic deformation force of the commonly used transmission piece 206 under energized conditions. This causes the insulating connecting rod 203 to lose the attraction between the permanent magnet 304 and the coil 302, resulting in the two springs 303 releasing their potential energy. The insulating connecting rod 203 then swings to the other side due to inertia. At this point, the spare transmission piece 205 on the other side first connects with the spare transmission electrode 5, and then... As the backup transmission piece 205 gradually deforms and bends, at the instant the two overlap, the coil 302 on the same side is energized and generates an electromagnetic force to attract the permanent magnet 304 on the same side, thereby counteracting the force of the spring 303 on the insulating connecting rod 203 and the reaction force of the deformation of the backup transmission piece 205, thus preventing the insulating connecting rod 203 from swinging back and forth. By electrically connecting the common transmission electrode 4 to the common battery connected to the photovoltaic panel, and the backup transmission electrode 5 to the power grid through the transformer switching power supply, the two transmission end wires are then clamped and fixed to the common transmission electrode 4 and the backup transmission electrode 5 respectively through the clamping ring 9 and clamping piece 6 on the fastening button 8, so that when the photovoltaic no longer supplies power to the common battery, the common battery is fed back and switched to the backup power supply of the power grid through this power switching device.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, the two coils 302 are on the same pole on the side that are close to each other, and the two permanent magnets 304 are on the same pole on the side that are close to each other.

[0028] like Figure 5 As shown, in the existing technology, the monitoring equipment is directly powered by photovoltaic power after conversion. The battery is charged by two currents: one is the power obtained from the grid, and the other is the power converted from photovoltaic power. This can cause the battery to be overcharged, thus reducing the battery's lifespan.

[0029] The usage method and advantages of this utility model: The power switching device operates as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, during operation, when the battery connected to the photovoltaic system is depleted, the coil 302 on the same side as the commonly used transmission plate 206 is de-energized, the electromagnetic force disappears, and the permanent magnet 304 loses its attraction to the coil 302. Simultaneously, the spring 303 on the same side releases its stored potential energy, while the spring 303 on the other side, which was originally stretched and generating a pulling force, experiences a greater attraction between the permanent magnet 304 and the coil 302 than the combined force of the two springs 303 and the elastic deformation force of the commonly used transmission plate 206 when energized. This causes the insulating connecting rod 203 to lose the attraction between the permanent magnet 304 and the coil. After the two springs 302 attract each other, the two springs 303 release potential energy, and the insulating connecting rod 203 swings to the other side under the action of inertia. At this time, the spare power transmission piece 205 on the other side first connects with the spare power transmission electrode 5. As the inertia continues, the spare power transmission piece 205 gradually deforms and bends. At the moment when the two connect, the coil 302 on the same side is energized and generates an electromagnetic force to attract the permanent magnet 304 on the same side, thereby offsetting the force of the spring 303 on the insulating connecting rod 203 and the reaction force of the deformation of the spare power transmission piece 205, thus avoiding the reciprocating swing of the insulating connecting rod 203.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic power switching device, characterized in that, The device includes a housing (1), inside which a switching assembly (2) and a triggering assembly (3) are provided. The switching assembly (2) includes a converging electrode (201), a bushing (202), an insulating connecting rod (203), a crossbar (204), a spare power transmission piece (205), and a commonly used power transmission piece (206). One end of the converging electrode (201) is fixedly connected to the bottom inner wall of the housing (1). The bushing (202) is movably sleeved on the side surface of the converging electrode (201) through a bearing. The insulating connecting rod (203) is fixedly connected to the side surface of the bushing (202). The crossbar (204) is fixedly connected to the other end of the insulating connecting rod (203). The spare power transmission piece (205) is fixedly connected to one end of the crossbar (204), and the commonly used power transmission piece (206) is fixedly connected to the other end of the crossbar (204). The triggering assembly (3) includes a housing (301), a coil (302), a spring (303), a permanent magnet (304), a fixing plate (305), and a magnetic core (306). The magnetic core (306) is fixedly connected to the inner wall of the opposite side of the housing (301). The coil (302) is fixedly sleeved on the side surface of the magnetic core (306) and the inner wall of the housing (301). The permanent magnet (304) is fixedly connected to the inner wall of the bottom of the housing (1). The fixing plate (305) is fixedly connected to the inner wall of the bottom of the housing (1). The spring (303) is fixedly connected to the side of the fixing plate (305) opposite to the insulating connecting rod (203).

2. The automatic power switching device according to claim 1, characterized in that, A common power transmission electrode (4) is fixedly connected to the bottom inner wall of the housing (1), and a spare power transmission electrode (5) is fixedly connected to the bottom inner wall of the housing (1). Clips (6) are fixedly connected to the top of the common power transmission electrode (4), the spare power transmission electrode (5) and the converging electrode (201).

3. The automatic power switching device according to claim 2, characterized in that, The top of the clamp (6) is fixedly connected to a threaded post (7), the threaded post (7) is connected to a fastening button (8) by a thread, and the bottom of the fastening button (8) is fixedly connected to a clamping ring (9).

4. The automatic power switching device according to claim 3, characterized in that, The four corners of the bottom inner wall of the housing (1) are respectively fixedly connected with internal threaded columns (13), and the inside of the internal threaded columns (13) is connected with bolts (12) by threads. The top of the housing (1) is provided with a cover plate (10), and the cover plate (10) is fixedly connected to the housing (1) by the bolts (12) and the internal threaded columns (13).

5. The automatic power switching device according to claim 4, characterized in that, The cover plate (10) has multiple through holes (11) inside, and the multiple through holes (11) are respectively sleeved on the confluence electrode (201), the commonly used power transmission electrode (4) and the spare power transmission electrode (5).

6. The automatic power switching device according to claim 5, characterized in that, The crossbar (204), the spare power transmission piece (205), and the commonly used power transmission piece (206) are combined in a U-shaped structure. The spare power transmission piece (205) and the commonly used power transmission piece (206) are both made of elastically deformable metal. The spare power transmission piece (205) and the commonly used power transmission piece (206) are electrically connected to the coils (302) on the same side of each other. The two coils (302) are connected in parallel and one end is electrically connected to the converging electrode (201).

7. The automatic power switching device according to claim 6, characterized in that, The two coils (302) are on the same pole on the side that is close to each other, and the two permanent magnets (304) are on the same pole on the side that is close to each other.

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