Intelligent capacitor

Abstract

The utility model relates to the technical field of capacitors, in particular to an intelligent capacitor which comprises a shell, a cover plate, a wire holder and an anti-explosion piece, the shell is provided with a containing cavity, the cover plate is connected to the shell and covers a cavity opening of the containing cavity, the wire holder is connected to the cover plate, and the anti-explosion piece is embedded in the containing cavity, used for resistor welding and electrically connected with the wire holder through a wire. According to the intelligent capacitor, the resistor and other components are welded to the anti-explosion piece, the requirements for additionally arranging the wiring terminals and welding the resistor and other components are met, then the anti-explosion piece is connected with the wiring base through the wire, the situation that a worker additionally arranges the wiring terminals at the wiring base and the cover plate is avoided, and the production cost of the intelligent capacitor is reduced.

Description

Technical Field

[0001] This application relates to the technical field of capacitors, and in particular to a smart capacitor. Background Technology

[0002] Intelligent capacitors are intelligent reactive power compensation devices that integrate advanced technologies such as modern measurement and control, power electronics, network communication, automation control, and power capacitors. Intelligent reactive power compensation capacitors have changed the outdated control technology and the reliance on mechanical contactors or electromechanical switches for switching capacitors used in traditional reactive power compensation devices. They have also changed the bulky and cumbersome structure of traditional reactive power compensation devices, resulting in a new generation of low-voltage reactive power compensation equipment with better compensation effect, smaller size, lower power consumption, lower price, greater cost savings, more flexible use, easier maintenance, longer service life, and higher reliability, thus meeting the higher requirements of modern power grids for reactive power compensation.

[0003] The intelligent capacitor consists of a housing and a cover. The housing houses the capacitor body, and the housing and cover work together to protect the capacitor body. A terminal block is connected to the cover to enable power transmission between the capacitor body and external devices. Currently, the terminal block and cover are molded together, and the number of terminals on the terminal block is fixed. To meet the requirements of resistance welding, additional terminals may be needed, resulting in higher production costs and greater operational difficulties. Utility Model Content

[0004] In order to meet the needs of welding components such as resistors and reduce the production cost of smart capacitors, this application provides a smart capacitor.

[0005] The intelligent capacitor provided in this application adopts the following technical solution:

[0006] A smart capacitor includes a housing, a cover plate, a terminal block, and an explosion-proof plate. The housing has a receiving cavity, the cover plate is connected to the housing and covers the opening of the receiving cavity, the terminal block is connected to the cover plate, and the explosion-proof plate is embedded in the receiving cavity. The explosion-proof plate is used for resistance welding and is electrically connected to the terminal block through a wire.

[0007] By adopting the above technical solution, components such as resistors are soldered to the explosion-proof sheet, which meets the needs of adding terminals and soldering components such as resistors. Then, the explosion-proof sheet is connected to the terminal block with wires, which avoids the need for workers to add terminals at the terminal block and cover plate, thus reducing the production cost of smart capacitors.

[0008] Preferably, the explosion-proof plate includes a connecting plate and a safety plate. There are two connecting plates, which are symmetrically distributed along the width of the housing. The two ends of the safety plate are respectively connected to the two connecting plates. The safety plate is used for soldering resistors and wires.

[0009] By adopting the above technical solution, the explosion-proof sheet consists of two connecting plates and a fuse. The fuse is connected to the connecting plates and is used to connect to the resistor and wires. When the internal circuit of the smart capacitor is short-circuited, the fuse can quickly disconnect the circuit, reducing the possibility of damage to the internal components of the smart capacitor caused by the short circuit and improving the service life of the smart capacitor.

[0010] Preferably, the explosion-proof plate further includes a fixing plate, the number of which is the same as the number of connecting plates and corresponds one-to-one, two of which are respectively connected to the side of the connecting plate away from the other connecting plate, and the fixing plate is connected to the cavity wall.

[0011] By adopting the above technical solution and setting a fixing plate to connect the connecting plate and the shell, the possibility of the explosion-proof sheet becoming loose at the connection point between the fuse and the wire is reduced due to vibration or impact during transportation or use, thereby improving the service life of the smart capacitor.

[0012] Preferably, the fixing plate includes a first fixing piece and a second fixing piece. The first fixing piece is connected to one side of the connecting plate along the thickness direction of the connecting plate. The end of the first fixing piece away from the other connecting plate is connected to one end of the second fixing piece. The first fixing piece and the second fixing piece are at a right angle. A limiting seat is connected to the cavity wall. The number of limiting seats is the same as the number of second fixing pieces and they correspond one-to-one. A limiting groove is provided on the side of the limiting seat away from the other limiting seat. The second fixing piece is embedded in the limiting groove.

[0013] By adopting the above technical solution, the fixing plate is composed of a first fixing piece and a second fixing piece. The first fixing piece and the second fixing piece are at right angles. The first fixing piece is connected to the connecting plate. A limiting seat is connected to the cavity wall. The limiting seat is provided with a limiting groove. The second fixing piece is embedded in the limiting groove, so as to realize the relative fixation of the explosion-proof plate and the shell in the horizontal direction and improve the stability of the connection between the connecting plate and the fixing plate.

[0014] Preferably, the surface of the second fixing piece closer to the first fixing piece is in contact with the surface of the connecting plate away from the other connecting plate.

[0015] By adopting the above technical solution, the surface of the second fixing piece close to the first fixing piece is in contact with the surface of the connecting plate away from the other connecting plate, and the connecting plate supports the second fixing piece, thereby improving the connection strength between the second fixing piece and the limiting seat.

[0016] Preferably, the bottom of the limiting groove is connected to a positioning post, and the second fixing piece is provided with a positioning hole for the positioning post to be inserted.

[0017] By adopting the above technical solution, a positioning post is connected to the bottom of the limiting groove, and a positioning hole is provided on the second fixing plate. The positioning hole is used for the positioning post to be inserted, so as to realize the relative fixation of the explosion-proof plate and the shell along the vertical direction. This reduces the possibility of the explosion-proof plate moving in the cavity during the operation of the intelligent capacitor, causing a short circuit in the intelligent capacitor, and improves the reliability of the intelligent capacitor.

[0018] Preferably, there are a plurality of positioning posts, which are distributed at intervals along the length of the housing, and the number of positioning holes is equal to the number of positioning posts and corresponds one-to-one.

[0019] By adopting the above technical solution, multiple positioning posts are set up, and a multi-point positioning method is used to achieve relative fixation of the second fixing plate and the limiting seat, reducing the possibility of the explosion-proof plate rotating along the axis of the positioning posts and improving the stability of the explosion-proof plate connection.

[0020] Preferably, the outer periphery of the positioning post at the end away from the bottom of the limiting groove is provided with a rounded corner, which is used to abut against the wall of the positioning hole.

[0021] By adopting the above technical solution, the outer periphery of the positioning post away from the bottom of the limiting groove is provided with a rounded corner. The rounded corner is used to abut against the wall of the positioning hole, which plays a guiding role in the installation of the second fixing piece and improves the working efficiency of intelligent capacitor assembly.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By soldering components such as resistors to the explosion-proof sheet, the need for adding terminals and soldering components such as resistors can be met. Then, the explosion-proof sheet is connected to the terminal block with a wire, avoiding the need for workers to add terminals at the terminal block and cover plate, thus reducing the production cost of smart capacitors.

[0024] 2. The explosion-proof plate consists of two connecting plates and a fuse. The fuse is connected to the connecting plates and is used to connect to the resistor and wires. When the internal circuit of the smart capacitor is short-circuited, the fuse can quickly disconnect the circuit, reducing the possibility of damage to the internal components of the smart capacitor caused by the short circuit and improving the service life of the smart capacitor.

[0025] 3. The fixing plate consists of a first fixing piece and a second fixing piece, which are at right angles to each other. The first fixing piece is connected to the connecting plate, and a limiting seat is connected to the cavity wall. The limiting seat has a limiting groove, and the second fixing piece is embedded in the limiting groove to achieve relative fixation of the explosion-proof piece and the shell in the horizontal direction. A positioning post is connected to the bottom of the limiting groove, and the second fixing piece has a positioning hole for the positioning post to be inserted, thereby achieving relative fixation of the explosion-proof piece and the shell in the vertical direction. This reduces the possibility of the explosion-proof piece moving in the cavity during the operation of the intelligent capacitor, which could cause a short circuit in the intelligent capacitor, and improves the reliability of the intelligent capacitor. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the exploded structure of the outer shell.

[0027] Figure 2 This is a cross-sectional view of a smart capacitor.

[0028] Figure 3 This is a structural diagram of an explosion-proof sheet.

[0029] Figure 4 yes Figure 2 Enlarged view of point A in the middle

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Outer shell; 11. Housing; 111. Receiving cavity; 12. Cover plate; 121. Annular groove; 122. Groove; 13. Limiting seat; 131. Limiting groove; 132. Positioning pin; 1321. Rounded corner;

[0032] 2. Terminal block;

[0033] 3. Explosion-proof plate; 31. Connecting plate; 32. Safety plate; 33. Fixing plate; 331. First fixing plate; 332. Second fixing plate; 3321. Positioning hole;

[0034] 4. Capacitor body. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1 This application discloses an intelligent capacitor including a housing 1. The housing 1 includes a shell 11 and a cover plate 12. The upper end of the shell 11 is provided with a receiving cavity 111, and the cover plate 12 is connected to the shell 11 and covers the opening of the receiving cavity 111. The outer periphery of the cover plate 12 near the shell 11 is provided with an annular groove 121, the upper end of the shell 11 is embedded in the annular groove 121, the upper end of the shell 11 abuts against the bottom of the annular groove 121, and the cavity wall of the receiving cavity 111 is in contact with the groove wall of the annular groove 121.

[0037] A smart capacitor also includes a terminal block 2. A groove 122 is provided on the surface of the cover plate 12 away from the receiving cavity 111. The terminal block 2 is fixedly connected to the cover plate 12, with one end of the terminal block away from the receiving cavity 111 located within the groove 122, and the other end of the terminal block embedded within the receiving cavity 111. In this embodiment, the terminal block 2 and the cover plate 12 are molded together. The terminal block 2 has a plurality of terminals, which are arranged in two groups. The two groups of terminals are symmetrically distributed along the width direction of the cover plate 12, and the terminals in the same group are spaced apart along the length direction of the cover plate 12. In this embodiment, there are six terminals.

[0038] Reference Figure 2and Figure 3 The intelligent capacitor also includes an explosion-proof sheet 3 and a capacitor body 4. Both the explosion-proof sheet 3 and the capacitor body 4 are embedded within a receiving cavity 111, and the explosion-proof sheet 3, the capacitor body 4, and the terminal block 2 are electrically connected via wires. The explosion-proof sheet 3 includes a connecting plate 31 and a fuse 32. Two connecting plates 31 are provided, symmetrically distributed along the width direction of the housing 11. The two ends of the fuse 32 are fixedly connected to the two connecting plates 31 respectively, and the fuse 32 is used for soldering components and wires. In this embodiment, the fuse 32 is riveted to the connecting plate 31. Several fuses 32 are provided, spaced apart along the length direction of the housing 11. In this embodiment, four fuses 32 are provided.

[0039] Reference Figure 3 and Figure 4 The explosion-proof plate 3 also includes fixing plates 33. The number of fixing plates 33 is the same as the number of connecting plates 31, and they correspond one-to-one. Two fixing plates 33 are fixedly connected to the side of the connecting plate 31 away from the other connecting plate 31. Each fixing plate 33 includes a first fixing piece 331 and a second fixing piece 332. The first fixing piece 331 is fixedly connected to the surface of the connecting plate 31 away from the bottom of the receiving cavity 111. One end of the second fixing piece 332 away from the bottom of the receiving cavity 111 is fixedly connected to the end of the first fixing piece 331 away from the other connecting plate 31. The first fixing piece 331 and the second fixing piece 332 are at a right angle. The surface of the second fixing piece 332 near the first fixing piece 331 is in contact with the other surface of the connecting plate 31 away from the other connecting plate 31. In this embodiment, the first fixing piece 331 and the connecting plate 31 are riveted together.

[0040] Reference Figure 1 and Figure 4 The outer shell 1 also includes limiting seats 13. The number of limiting seats 13 is the same as the number of second fixing pieces 332 and they correspond one-to-one. The two limiting seats 13 are symmetrically distributed along the width direction of the shell 11, and the limiting seats 13 are fixedly connected to the cavity wall of the receiving cavity 111. In this embodiment, the limiting seats 13 are plate-shaped, and both ends of the limiting seats 13 along the length direction of the shell 11 are riveted and fixed to the shell 11. The middle part of the limiting seat 13 protrudes to the side away from the cavity wall of the receiving cavity 111 to form a limiting groove 131, and the second fixing pieces 332 are embedded in the limiting groove 131.

[0041] Reference Figure 3 and Figure 4A positioning post 132 is fixedly connected to the bottom of the limiting groove 131. Several positioning posts 132 are provided, spaced apart along the length of the housing 11. In this embodiment, two positioning posts 132 are provided. The second fixing piece 332 is provided with positioning holes 3321, the number of which is the same as the number of positioning posts 132 and corresponds one-to-one. The positioning holes 3321 are used for embedding the positioning posts 132. A rounded corner 1321 is provided on the outer periphery of the end of the positioning post 132 away from the bottom of the limiting groove 131, and the rounded corner 1321 is used to abut against the wall of the positioning hole 3321.

[0042] The implementation principle of a smart capacitor in this application embodiment is as follows: the required resistor is soldered to the fuse 32, and then the fuse 32, the heat dissipation body and the terminal block 2 are electrically connected through wires. The capacitor body 4 is embedded in the receiving cavity 111. Two second fixing pieces 332 are respectively embedded in two limiting grooves 131. The positioning hole 3321 is aligned with the positioning post 132, so that the hole wall of the positioning hole 3321 abuts against the rounded corner 1321, so that the positioning post 132 is embedded in the positioning hole 3321, thereby achieving relative fixation of the explosion-proof piece 3 and the shell 11. Then, the shell 11 is embedded in the annular groove 121, so that the cover plate 12 covers the groove of the receiving cavity 111.

[0043] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A smart capacitor, characterized in that: The device includes a housing (11), a cover plate (12), a terminal block (2), and an explosion-proof plate (3); the housing (11) has a receiving cavity (111); the cover plate (12) is connected to the housing (11) and covers the opening of the receiving cavity (111); the terminal block (2) is connected to the cover plate (12); the explosion-proof plate (3) is embedded in the receiving cavity (111); the explosion-proof plate (3) is used for welding components; the explosion-proof plate (3) is electrically connected to the terminal block (2) through a wire.

2. The intelligent capacitor according to claim 1, characterized in that: The explosion-proof plate (3) includes a connecting plate (31) and a safety plate (32); there are two connecting plates (31); the two connecting plates (31) are symmetrically distributed along the width direction of the housing (11); the two ends of the safety plate (32) are respectively connected to the two connecting plates (31); the safety plate (32) is used for welding components and wires.

3. The intelligent capacitor according to claim 2, characterized in that: The explosion-proof plate (3) also includes a fixing plate (33); the number of fixing plates (33) is the same as the number of connecting plates (31) and they correspond one-to-one; the two fixing plates (33) are respectively connected to the side of the connecting plate (31) away from the other connecting plate (31); the fixing plate (33) is connected to the cavity wall of the receiving cavity (111).

4. The intelligent capacitor according to claim 3, characterized in that: The fixing plate (33) includes a first fixing piece (331) and a second fixing piece (332); the first fixing piece (331) is connected to one side of the connecting plate (31) along the thickness direction of the connecting plate (31); one end of the first fixing piece (331) away from the other connecting plate (31) is connected to one end of the second fixing piece (332); the first fixing piece (331) and the second fixing piece (332) are at right angles; a limiting seat (13) is connected to the cavity wall of the receiving cavity (111); the number of the limiting seats (13) is the same as the number of the second fixing pieces (332) and they correspond one to one; a limiting groove (131) is provided on the side of the limiting seat (13) away from the other limiting seat (13); the second fixing piece (332) is embedded in the limiting groove (131).

5. The intelligent capacitor according to claim 4, characterized in that: The second fixing piece (332) is in contact with the side surface of the first fixing piece (331) on the side surface of the connecting plate (31) away from the other connecting plate (31).

6. The intelligent capacitor according to claim 4, characterized in that: The bottom of the limiting groove (131) is connected to a positioning post (132); the second fixing piece (332) is provided with a positioning hole (3321); the positioning hole (3321) is used for the positioning post (132) to be inserted.

7. The intelligent capacitor according to claim 6, characterized in that: The positioning posts (132) are provided in a plurality of them; the plurality of positioning posts (132) are distributed at intervals along the length direction of the shell (11); the number of positioning holes (3321) is equal to the number of positioning posts (132) and corresponds one to one.

8. The intelligent capacitor according to claim 6, characterized in that: The outer periphery of the positioning post (132) away from the bottom of the limiting groove (131) is provided with a rounded corner (1321); the rounded corner (1321) is used to abut against the wall of the positioning hole (3321).

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