CN219832427U - Novel capacitor and wiring seat thereof - Google Patents

Abstract

The utility model provides a novel wiring seat of a capacitor, which comprises a conductive terminal. The group of conductive terminals comprises at least two conductive rods connected in parallel, one terminal on each capacitive element in the novel capacitor is connected with a plurality of conductive rods in the group of conductive terminals through a wire, and each conductive rod is connected with at least one capacitive element. Therefore, only one wiring end of each capacitive element connected with the capacitive group is connected to one conductive rod of one group of conductive terminals through a wire, each conductive rod is at least distributed with one capacitive element, and the connection position of the wire can be increased by increasing the number of the conductive rods in each group of conductive terminals.

Description

Novel capacitor and wiring seat thereof

Technical Field

The utility model belongs to the technical field of capacitors, and particularly relates to a novel capacitor and a wiring seat thereof.

Background

The current large-specification single-phase product has larger rated current and higher stability requirement on the structural performance and the safety performance of the wiring seat of the power capacitor.

The capacitor in the prior art is internally provided with a plurality of capacitor elements which are arranged in a stacking mode, each column of capacitor elements is welded with a conducting rod through one wire, and a plurality of columns of capacitor elements are respectively welded with the same conducting rod through a plurality of wires. Because the welding difficulty of the lead and the conducting rod is high and the contact resistance of the local welding point is very large, the conducting rod is difficult to assemble, the current carrying and the temperature rise are abnormal, and fault points are easy to form at the positions.

Currently, large-sized single-phase products have larger rated current, and in order to solve the current-carrying problem, a thick conducting rod such as M10 or M12 is generally selected.

Therefore, how to reduce the current carrying capacity of the conductive rod and reduce the temperature rise is a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to provide a novel capacitor and a wiring seat thereof, which can effectively improve the current carrying capacity of a conducting rod and reduce the temperature rise.

In order to solve the above technical problems, the present utility model provides a novel wire holder of a capacitor, comprising: a group of conductive terminals comprising at least two conductive rods connected in parallel;

one wiring terminal on each capacitive element in the novel capacitor is selectively connected with a plurality of conductive rods in a group of conductive terminals through wires, and each conductive rod is connected with at least one capacitive element.

Optionally, in the wire holder of the novel capacitor, the two conductive terminals are two groups, two terminals of each capacitive element are respectively connected with the two groups of conductive terminals, and one terminal of each capacitive element is selectively connected with a plurality of conductive rods corresponding to one group of conductive terminals.

Optionally, in the wire holder of the novel capacitor, the wire holder further includes a cover plate, and each conductive rod penetrates through and is fixed on the cover plate, and the first end located at the outer side of the novel capacitor is used for being connected with an external wiring terminal, and the second end located at the inner side of the novel capacitor is connected with the capacitive element through a wire.

Optionally, in the wire holder of the novel capacitor, a first end of the conductive rod is provided with a boss, the boss is abutted to the cover plate, a second end of the conductive rod is provided with a first external thread, and the first external thread is used for connecting a lock nut to lock the conductive rod onto the cover plate.

Optionally, in the wire holder of the novel capacitor, the wire holder further includes an insulating component, and a plurality of through holes for being penetrated by each conductive rod are arranged on the insulating component at intervals.

Optionally, in the wire holder of the novel capacitor, the boss is provided with a fixture block on a butt joint surface of the boss and the insulating assembly, and the insulating assembly is provided with a clamping groove adapted to the fixture block.

Optionally, in the wire holder of the novel capacitor, the first end of the conductive rod is provided with a second external thread on a side of the boss away from the second end, and the second external thread is used for being in threaded connection with an external terminal.

The utility model also provides a novel capacitor comprising a housing, a plurality of capacitive elements and a wire holder of the novel capacitor as described above;

the wire holder is arranged on the shell.

Optionally, in the novel capacitor, a plurality of the capacitive elements are arranged in a matrix, and each of the wires is connected to at least one column of the capacitive elements.

Optionally, in the above novel capacitor, the novel capacitor further includes an isolation cover disposed on the cover plate of the wire holder, and configured to cover the conductive terminal; and/or the number of the groups of groups,

the capacitor further comprises one or more safety sheets, two ends of each capacitor element are respectively connected with two groups of conductive terminals, one safety sheet passes through a circuit between one capacitor element and the two groups of conductive terminals, and the safety sheet is alternatively connected with one of the two groups of conductive terminals;

when the capacitive element is overloaded, the rupture disc breaks.

The utility model provides a novel capacitor wire holder, which has the beneficial effects that:

the group of conductive terminals comprises at least two conductive rods connected in parallel, one terminal on each capacitive element in the novel capacitor is connected with a plurality of conductive rods in the group of conductive terminals through a wire, and each conductive rod is connected with at least one capacitive element. Therefore, only one wiring end of each capacitive element connected with the capacitive group is connected to one conductive rod of one group of conductive terminals through a wire, and each conductive rod is at least distributed with one capacitive element, so that the wire connection position can be increased by increasing the number of the conductive rods in each group of conductive terminals.

The utility model also provides a novel capacitor with the novel capacitor wire holder, which has the same beneficial effects and is not described herein.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a prior art connection between a conductive rod and a cover plate;

fig. 2 is a schematic structural diagram of a novel capacitor (shown as an isolation cover) according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a novel capacitor (isolation cover is not shown) according to an embodiment of the present utility model;

fig. 4 is a cross-sectional view of a connection between a conductive terminal and a cover plate according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of the internal structure of a novel capacitor according to an embodiment of the present utility model;

fig. 6 is a partial enlarged view of a wire arrangement of a novel capacitor provided by an embodiment of the present utility model.

In fig. 1:

01-conducting rod; 02-cover plate;

in fig. 2-6:

1-a cover plate; 2-conductive terminals; 201-boss; 202-locking nut; 3-a housing; a 4-capacitance element; a 5-insulator assembly; 6-copper bars; 7-conducting wires; 8-a rupture disc; 9-isolating cover; 10-external terminals.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, inner, outer, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Wherein, in the description of the embodiments of the present utility model, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present utility model, "plurality" means two or more than two.

In the description of the present utility model, the plural means that more than two are used for distinguishing technical features if the first and second are described only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The core of the utility model is to provide a novel capacitor and a wiring seat thereof, which can effectively improve the current carrying capacity of a conducting rod and reduce the temperature rise.

In order to make the technical solution provided by the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments.

Specifically, referring to fig. 2-6, fig. 2 is a schematic structural diagram of a novel capacitor (illustrating an isolation cover) according to an embodiment of the present utility model; fig. 3 is a schematic structural diagram of a novel capacitor (isolation cover is not shown) according to an embodiment of the present utility model; fig. 4 is a cross-sectional view of a connection between a conductive terminal and a cover plate according to an embodiment of the present utility model; FIG. 5 is a schematic diagram of the internal structure of a novel capacitor according to an embodiment of the present utility model; fig. 6 is a partial enlarged view of a wire arrangement of a novel capacitor provided by an embodiment of the present utility model.

The utility model provides a novel capacitor wire holder which comprises a conductive terminal 2. Wherein a set of conductive terminals 2 comprises at least two parallel conductive rods. Specifically, copper bars 6 are sleeved on the conductive rods of a group of conductive terminals 2 to be connected in parallel, one ends of the conductive rods of the group of conductive terminals 2 are connected with different capacitance elements, and the other ends of the conductive rods are connected with the same external trunk.

One terminal on each capacitive element 4 in the novel capacitor is selectively connected to a plurality of conductive rods in a set of conductive terminals 2 by a wire 7, each conductive rod being connected to at least one capacitive element 4.

Since the capacitive elements 4 are non-polar, it is only necessary to ensure that one of the terminals connecting each capacitive element is connected to one of the conductive rods of the set of conductive terminals 2 by means of the wire 7, and that each conductive rod is assigned at least one capacitive element 4. One end of one wire 7 is soldered to only one conductive rod and the other end may be connected to one or more capacitive elements 4.

The novel capacitor wire holder that the present case provided increases the hookup location of wire 7 through increasing conducting rod quantity in every group conductive terminal, and this kind of mode is favorable to increasing conductive contact area, the effectual current-carrying capacity that has increased has reduced the product temperature rise. Meanwhile, compared with the prior art, each group of conductive terminals only adopts one conductive rod with a thicker diameter, the conductive rod with a thinner diameter can be selected by increasing the number of the conductive rods of each group of conductive terminals, so that the diameter of each conductive rod can be relatively reduced. The number of conducting rods is increased, more capacitance elements 4 can be conveniently installed, welding difficulty is reduced, and local contact resistance is reduced.

In one embodiment, the two sets of conductive terminals are two, and two terminals of each capacitive element 4 are respectively connected to the two sets of conductive terminals 2, and one terminal of each capacitive element 4 is selectively connected to a plurality of conductive bars corresponding to one set of conductive terminals 2. Wherein a plurality of conductive bars are connected to different capacitive elements 4, each capacitive element 4 being selectively connected to a plurality of conductive bars in a set of conductive terminals. One capacitive element cannot be connected to a plurality of conductive rods, and one conductive rod can be connected to a plurality of different capacitive elements 4. Of course, the conductive terminals can be three groups, and the conductive terminals can be adaptively selected according to the specific model of the capacitor.

As shown in fig. 3, each group of conductive terminals 2 adopts two conductive rods, and each group of conductive terminals 2 is connected with a plurality of capacitive elements 4 through three wires 7, one conductive rod of the first group of conductive terminals 2 is welded with one wire 7, and the other conductive rod is welded with two wires 7, and the end of each wire 7 can be connected with at least the first terminal of one capacitive element 4. Similarly, one conductive rod of the second group of conductive terminals 2 is welded with one conductive wire 7, and the other conductive rod is welded with two conductive wires 7, and the end of each conductive wire 7 can be connected with at least the second terminal of one capacitive element.

The novel capacitor also comprises a cover plate 1, wherein each conducting rod penetrates through and is fixed on the cover plate 1, a first end located on the outer side of the novel capacitor is used for being connected with an external wiring terminal 10, and a second end located on the inner side of the novel capacitor is connected with the capacitive element 4 through a wire 7. One end of each wire 7 is connected to a terminal of the capacitive element 4, and the other end is soldered to a conductive rod. The first terminal of each capacitor element is connected to one conductive rod of one group of conductive terminals through a wire 7, the second terminal of each capacitor element is connected to one conductive rod of the other group of conductive terminals through a wire 7, and each conductive rod is at least allocated with one wire 7.

In a specific embodiment, the first end of the conductive rod is provided with a boss 201, and the boss 201 abuts against the cover plate 1. The second end of the conducting rod is provided with a first external thread. The first external thread is used for connecting the locking nut 202, so that the boss 201 and the locking nut 202 are matched to lock the conductive rod to the cover plate 1. The conducting rod is locked on the cover plate 1 through the lock nut 202, and a sealing ring made of rubber materials and an insulating plate made of epoxy resin materials can be arranged between the lock nut 202 and the cover plate 1. The sealing ring and the insulating plate have good insulativity, so that the shell and the cover plate 1 can be prevented from being electrified, and the safety performance is improved.

As shown in fig. 4, the conductive rod has a cylindrical structure, the boss 201 has a disk-like structure, and the boss 201 penetrates through the conductive rod and is coaxially arranged with the conductive rod. The diameter of the boss 201 is greater than the diameter of the conductive rod. Of course, the boss 201 may have a shape other than a disk shape, and may be provided on only one side of the conductive rod, or may be provided in a plurality of circumferentially spaced portions of the conductive rod, and the above-mentioned arrangement is within the scope of protection of the present utility model and is not limited thereto.

In addition, as shown in fig. 1 in the prior art, the conductive rod 01 is tightly attached to the iron sheet cover plate 02 by screwing the nut, and the independent conductive rod 01 can only provide torque by means of friction force at the clamping position of the conductive rod 01 and the iron sheet cover plate 02, so that the force value is limited. When the top of the conductive rod 01 is provided with the terminal, the torsion requirement of the conductive rod 01 is difficult to support due to the structural problem of the product, so that the connection stability between the conductive rod 01 and the iron sheet cover plate 02 is reduced.

The scheme further comprises an insulating assembly 5 arranged on the cover plate 1, and a plurality of through holes used for being penetrated by each conducting rod are formed in the insulating assembly 5 at intervals. In the practical application process, each group of conductive terminals 2 may share one set of insulating assemblies 5, and the insulating assemblies 5 corresponding to the two groups of conductive terminals 2 are arranged at intervals, and of course, one set of insulating assemblies 5 may also be shared by the two groups of conductive terminals 2.

In order to improve the connection stability of the conductive rod and the cover plate 1, the boss 201 is provided with a clamping block on the abutting surface with the insulating assembly 5, and the insulating assembly 5 is provided with a clamping groove for matching with the clamping block. The number of the clamping blocks can be one or more, and correspondingly, the clamping grooves correspond to the number and the positions of the clamping blocks one by one.

The insulating component 5 is provided with a counter bore for embedding the boss 201, and the counter bore is communicated with the through hole and forms a step surface. In a specific embodiment, the number of the clamping blocks is multiple, the plurality of clamping blocks and the boss 201 form a spline structure, and the counter bore of the insulation assembly 5 forms a spline structure. In addition, the fixture block can be arranged at the bottom or the side wall of the convex block, and correspondingly, the clamping groove can be arranged on the step surface or the side wall of the counter bore. The boss 201 may be disk-shaped, although the boss 201 may be polygonal or have other irregular shapes. When the protruding block is polygonal or has other irregular shapes, the clamping block and the clamping groove structure can be omitted.

Further, the first end of the conductive rod is provided with a second external thread at a side of the boss 201 remote from the second end, and the second external thread is for threaded connection with an external terminal. An installation space for clamping the external connection line is formed between the end surface of the boss 201 facing the first end of the conductive rod and the external terminal 10. The end surface of the boss 201 facing the second end of the conductive rod abuts against the cover plate 1 (or the insulating member 5).

The external terminal 10 generates a certain torsion to the conductive rod when it is screwed on. For the prior art, the torque force is too large, the clamping force for tightening the nut, the conductive rod and the cover plate 1 is limited, and the torque force is far larger than the friction force provided by the clamping force, so that the stability of connection is easily damaged, the conductive rod rotates relative to the cover plate 1, and the internal circuit of the capacitor fails. And the insulating subassembly 5 in this case firmly connects in apron 1, when arbitrary conducting rod and external terminal 10 are screwed and are connected, because the lug of conducting rod and the counter bore joint of insulating subassembly 5, the support that the joint structure provided can effectively overcome rotatory torsion, reaches the stability of connection.

The assembled conductive rod sequentially passes through the insulating assembly 5, the cover plate 1, the sealing ring and the insulating plate, and both ends are respectively screwed into the external terminal 10 and the tightening nut, thereby forming a sealed insulating wiring structure. The sealing washer sets up between conducting rod and apron 1.

In addition, the present application also provides a novel capacitor comprising a housing 3, a plurality of capacitive elements 4 and a wire holder of the novel capacitor as described above.

The shell 3 is of a cavity structure with an opening, a plurality of capacitance elements 4 are arranged in the cavity of the shell 3, and the wire holder is arranged on the opening of the shell 3 and is in sealing connection with the edge of the opening of the shell 3.

Obviously, the novel capacitor with the wire holder of the novel capacitor also has all the technical effects described above.

In a specific embodiment, the plurality of capacitive elements 4 are arranged in a matrix, and each wire is connected to at least one column of capacitive elements. Each column of capacitive elements 4 is regarded as a capacitive group, and there is no limitation in the number of capacitive elements 4 in the capacitive group. As shown in fig. 5, the plurality of capacitive elements 4 are arranged in a matrix of four rows and three columns. The two groups of conductive terminals 2 each comprise two conductive rods, each group of conductive terminals 2 is uniformly distributed with 3 wires 7, and each wire 7 is connected with a column of capacitance elements 4. In the first set of conductive terminals 2, first terminals of two columns of capacitive elements 4 are connected to a first conductive rod by two wires 7, respectively, and first terminals of another column of capacitive elements 4 are connected to a second conductive rod by another wire 7. In the second set of conductive terminals 2, the second terminals of two columns of capacitive elements 4 are connected to the first conductive rod by two wires 7, respectively, and the second terminals of the other column of capacitive elements 4 are connected to the second conductive rod by another wire 7.

Compared with the mode that each group of conductive terminals 2 in the prior art is provided with only one conductive rod, the conductive rod is arranged on each group of conductive terminals 2, and the scheme has the advantages that when the number of the capacitive elements 4 is large, the capacitive elements in different columns can be separated, each column of capacitive elements 4 is connected by one wire 7, and the plurality of wires 7 are respectively connected to the conductive rods adjacent to the same, so that the assembly of internal wiring harnesses is facilitated, the current carrying capacity is improved, the temperature rise of products is reduced, and the technical defects of high welding difficulty, large contact resistance of local welding points and the like caused when only one conductive rod is arranged in the prior art can be effectively avoided.

In order to prevent the error contact between the outside and the conductive terminal 2, the present case further includes an isolation cover 9 disposed on the cover plate 1 of the wire holder, for covering the conductive terminal 2. The isolation cover 9 can also play a role in water and dust prevention. In addition, the isolation cover 9 is detachably connected to the cover plate 1, and specifically, a connection mode such as clamping connection or hinging connection can be adopted. The shielding cover 9 can be further provided with an avoiding opening for avoiding the external wiring terminal 10, so that the wiring harness can pass through the avoiding opening and be led out from the wiring terminal when the shielding cover 9 is covered.

To protect a single-phase or three-phase capacitor, one or more rupture discs 8 are provided inside the housing 3. Two ends of each capacitive element 4 are respectively connected to two sets of conductive terminals, and a circuit formed between one capacitive element 4 and the two sets of conductive terminals is required to pass through a rupture disc 8. The rupture disc 8 may be connected to either one of the two sets of conductive terminals. The number of capacitive elements 4 to which each rupture disc 8 is correspondingly connected is not limited, and may be adaptively selected according to the current load capacity that the rupture disc 8 can carry. When the capacitive element 4 is overloaded, the rupture disc 8 breaks.

If the number of the rupture discs is 1, each capacitor element is connected with the same rupture disc; when the number of rupture discs is plural, 1 rupture disc can be shared by plural capacitors.

In a specific embodiment, the middle part of the rupture disc 8 has a notch, and two sides of the notch are two ends of the rupture disc 8. The two ends of the safety piece 8 far away from the notch are respectively connected to the inner wall of the shell 3 through an insulating mechanism. The lead wire 7 corresponding to the rupture disc 8 is divided into a first section and a second section, the first section is electrically connected with the conductive rod and the first end of the rupture disc 8 respectively, and the second section is electrically connected with the capacitive element 4 and the second end of the rupture disc respectively.

When the capacitor element 4 fails under special working conditions, gas is generated in the cavity of the shell 3, the internal air pressure is suddenly increased, the first end and the second end of the safety disc 8 are broken at the notch, and the capacitor bank is disconnected with the conductive terminal 2, so that an explosion-proof effect is achieved.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. A novel capacitor's wire holder, characterized in that includes: a group of conductive terminals comprising at least two conductive rods connected in parallel with each other;

one wiring terminal on each capacitive element in the novel capacitor is selectively connected with a plurality of conductive rods in a group of conductive terminals through wires, and each conductive rod is connected with at least one capacitive element.

2. The novel capacitor wire holder of claim 1, wherein the number of conductive terminals is two, two terminals of each of the capacitor elements are respectively connected with the two conductive terminals, and one terminal of each of the capacitor elements is alternatively connected with a plurality of conductive wires corresponding to one of the conductive terminals.

3. The wire holder of claim 1, further comprising a cover plate, each of the conductive rods extending through and secured to the cover plate and having a first end located outside the novel capacitor for connection to an external terminal and a second end located inside the novel capacitor for connection to the capacitive element via a wire.

4. The novel capacitor wire holder of claim 3, wherein the first end of the conductive rod is provided with a boss, the boss abuts against the cover plate, and the second end of the conductive rod is provided with a first external thread for connecting a lock nut to lock the conductive rod to the cover plate.

5. The wire holder of claim 4, further comprising an insulating member disposed on the cover plate, wherein a plurality of through holes for being penetrated by the conductive rods are provided at intervals on the insulating member.

6. The novel capacitor wire holder of claim 5, wherein the boss is provided with a clamping block on a butt joint surface with the insulating assembly, and the insulating assembly is provided with a clamping groove adapted to the clamping block.

7. The novel capacitor wire holder of claim 4, wherein the first end of the conductive rod is provided with a second external thread on a side of the boss away from the second end, the second external thread for threaded connection with an external terminal.

8. A novel capacitor comprising a housing, a plurality of capacitive elements, and a wire holder of the novel capacitor of any one of claims 1-7;

the wire holder is arranged on the shell.

9. The novel capacitor of claim 8, wherein a plurality of said capacitive elements are arranged in a matrix, each of said conductors being connected to at least one column of said capacitive elements.

10. The novel capacitor of claim 8, further comprising an isolation cover disposed on the cover plate of the wire holder for covering the conductive terminal; and/or the number of the groups of groups,

the capacitor further comprises one or more safety sheets, two ends of each capacitor element are respectively connected with two groups of conductive terminals, one safety sheet passes through a circuit between one capacitor element and the two groups of conductive terminals, and the safety sheet is alternatively connected with one of the two groups of conductive terminals;

when the capacitive element is overloaded, the rupture disc breaks.