JPH11150039A - Capacitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a capacitor which is provided with a parallel connection structure capable of reducing its internal inductance. SOLUTION: Each electrode 12 formed at a terminal in the axial direction of each capacitor element 11 which is arranged in parallel is bonded with each other, by a copper plate 13 as a first conductive body and is bonded with one of terminals via a lead copper plate 14. Each electrode 12 formed at another terminal of the axial direction of each capacitor element 11 is bonded with each other by copper plates 15, 18 and 16 as second conductive bodies and is bonded with another terminal via a lead copper plate 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor having a plurality of capacitor elements electrically connected in parallel, and more particularly to a capacitor having a reduced internal inductance.

[0002]

2. Description of the Related Art A capacitor used in various electric circuits such as a power system and a distribution system is generally composed of a plurality of capacitor elements.
These capacitor elements are appropriately connected in parallel or in series according to the electrical specifications of the capacitor such as its capacity and voltage.

FIG. 9 shows a structure relating to a capacitor having a relatively low voltage, in which a plurality of capacitor elements are connected in parallel. FIG. 9 (1) is a perspective view thereof, and FIG.
Is a side view thereof. In the figure, reference numeral 1 denotes a capacitor element formed by winding a metal vapor-deposited film, for example, and electrodes 2 are formed at both ends in the axial direction (the front-rear direction in FIG. 1A) by spraying solder or the like (metallicon). . The capacitor element 1 has four rows in the horizontal direction and five rows in the vertical direction.
The columns are arranged parallel to each other.

[0004] Reference numeral 3 denotes a capacitor element 1 for two horizontal rows and five vertical rows.
Are electrically connected to each other, and are connected to the electrodes by, for example, soldering. Reference numeral 4 denotes a conductor for connecting each of the copper foils 3 to a terminal mounted through a case (not shown).

[0005] As shown in the figure, the conventional parallel connection structure is as follows.
The electrodes 2 formed at both ends in the axial direction of the capacitor element 1 are
They were connected to each other by copper foils 3, and furthermore, lead wires 4 were drawn out from the upper end of each copper foil 3, and these lead wires 4 were connected in parallel for each polarity to terminals. This connection structure
Although there is an advantage that the structure itself is simplified, the internal inductance as a capacitor tends to increase. A capacitor is not limited to a filter, but a current of a high frequency component often flows from the beginning. Therefore, the value of the internal inductance may adversely affect the performance as a capacitor and operating conditions.

The present invention has been made to solve the above problems, and has as its object to obtain a capacitor having a parallel connection structure capable of reducing its internal inductance.

[0007]

According to a first aspect of the present invention, there is provided a capacitor in which a plurality of capacitor elements are arranged in parallel, and electrodes formed at one axial end of the respective capacitor elements are electrically connected to each other. A second conductor that electrically connects the conductor and an electrode formed at the other end in the axial direction of each of the capacitor elements to each other, wherein the first conductor extends in an arrangement direction of the capacitor elements and A first conductive portion disposed to face one end in the direction, and the second conductor extends in the arrangement direction of the capacitor elements and is disposed to face the other end in the axial direction. A second conductive portion, a third conductive portion extending in the arrangement direction of each of the capacitor elements and disposed in parallel with and facing the first conductive portion, and parallel to the arrangement direction of each of the capacitor elements. And the second conductive part and the third conductive part are electrically connected to each other. Has a fourth conductive portion for connecting,
A first lead-out portion for electrically connecting the first conductor to one of the terminals is led out from an end of the first conductive portion;
A second lead portion for electrically connecting the second conductor to the other of the terminals is led out from an end of the third conductive portion.

According to a second aspect of the present invention, in the first aspect, the first conductor extends in a direction in which the capacitor elements are arranged and is disposed so as to face the fourth conductive portion in parallel with each other. A fifth conductive portion electrically connected to the first conductive portion;

According to a third aspect of the present invention, in the capacitor according to the first or second aspect, the second lead portion is led out from one end of the third conductive portion in the arrangement direction of each capacitor element.
Further, the first conductive portion has a first folded conductive portion extending from the other end in the arrangement direction and reaching one end in the arrangement direction, and the first lead portion is formed of the first folded conductive portion. This is derived from one end in the arrangement direction.

According to a fourth aspect of the present invention, in the capacitor according to the first or second aspect, the first lead portion is led out from one end of the first conductive portion in the arrangement direction of each capacitor element.
The third conductive portion has a second folded conductive portion extending from the other end in the arrangement direction and reaching one end in the arrangement direction, and a second lead portion is formed of the second folded conductive portion. This is derived from one end in the arrangement direction.

According to a fifth aspect of the present invention, there is provided a capacitor according to any one of the first to fourth aspects, wherein the plurality of capacitor elements are connected in parallel using first and second conductors to form a group. And a plurality of groups, the first common conductive plate being electrically and mechanically coupled to one of the terminals and the first common conductive plate disposed in parallel with the first common conductive plate via an insulating member. And the other of the terminals is electrically
A second common conductive plate mechanically coupled to the first common conductive plate, wherein each first lead of each group is electrically connected to the first common conductive plate; Are electrically connected to the second common conductive plate.

According to a sixth aspect of the present invention, there is provided a capacitor according to the fifth aspect, wherein the plurality of groups of capacitors are arranged side by side in a direction in which the outer peripheral ends of the capacitor elements of the respective groups face each other to form a one-row group. In this case, the shape of the first and second common conductive plates is close to the shape of the group of one row viewed from the arrangement direction of each capacitor element, and the first and second drawers in the axial direction of the capacitor element are provided. The derivation positions of the parts are opposite to each other in the adjacent groups.

According to a seventh aspect of the present invention, there is provided a capacitor according to the fifth aspect, wherein the plurality of groups of capacitors are arranged side by side in a direction in which the outer peripheral ends of the capacitor elements of the respective groups face each other to form a one-row group. Are arranged in the direction in which the axial ends of the capacitor elements face each other, and the shapes of the first and second common conductive plates are viewed from the arrangement direction of the respective capacitor elements. The shape is close to the shape of the two-row group, and the lead-out position of the first and second lead-out portions in the axial direction of the capacitor element is on the opposite side of each row group.

The capacitor according to claim 8 is the first and second capacitors according to any one of claims 5 to 7.
Has a flexible portion in the drawer portion.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a perspective view showing a parallel connection structure of capacitors according to Embodiment 1 of the present invention, and shows a group of capacitors formed by connecting six capacitor elements in parallel. FIG. 1A shows a state before assembly, and FIG.
Indicates a state after assembly. In the figure, reference numeral 11 denotes a capacitor element formed by winding a metal vapor-deposited film, for example, and reference numerals 12a and 12b denote electrodes formed at one axial end (front side in the figure) and the other axial end (depth side in the figure) of the capacitor element 11. It is. Reference numeral 13 denotes a copper plate as a first conductive portion which is disposed opposite to one axial end of the capacitor element 11 and electrically connects the electrodes 12a to each other.
A lead copper plate 14 as a first lead portion for electrical connection to one of the terminals (not shown) is connected to one end (the upper end side in the figure) of the arrangement direction.

Reference numeral 15 denotes a copper plate which is disposed opposite to the other axial end of the capacitor element 11 and serves as a second conductive portion for electrically connecting the electrodes 12b to each other. A copper plate as a third conductive part disposed,
One end of the capacitor element 11 in the arrangement direction is connected to a lead copper plate 17 as a second lead portion for electrically connecting to the other terminal (not shown). 18 is disposed in parallel with the arrangement direction of each capacitor element 11 and
And a copper plate as a fourth conductive portion that electrically connects the copper plate 16 to the copper plate 16. Reference numeral 19 denotes an insulating plate such as a press board, various insulating papers, various insulating films, various insulating sheets, etc., which are interposed between the copper plate 13 and the copper plate 16 and between the capacitor elements 11 and the copper plate 18 to perform electrical insulation. It is. In the connection structure of FIG. 1, the copper plate 13 constitutes a first conductor, and the copper plates 15, 16 and 18 constitute a second conductor.

As described above, in the parallel connection structure shown in FIG. 1, in particular, the current generated in the axial direction of each capacitor element 11 and the current flowing in the copper plate 18 arranged in parallel with these capacitor elements 11 are generated. Most of the generated magnetic field is canceled out, and the lead-out portion to the terminal is also constituted by the copper plate 13 and the copper plate 16 and the lead copper plate 14 and the lead copper plate 17 which are arranged close to and opposed to each other in parallel. The magnetic field generated in this derivation part has also been greatly reduced,
As a result, the internal inductance of the capacitor group is significantly reduced.

Incidentally, when actually measured with a filter capacitor having a rated voltage of 3 KV, the internal inductance of the conventional parallel connection structure shown in FIG. 9 was 350 nH, whereas the internal inductance of the parallel connection structure of the present invention shown in FIG. Inductance becomes about 60nH and its value is 20%
It was demonstrated that the reduction was greatly reduced to the following.

Embodiment 2 FIGS. 2 to 4 are introduced as a parallel connection structure of capacitors according to the second embodiment of the present invention, and are intended to further reduce the internal inductance of FIG. 1. This will be mainly described.

First, FIG. 2 includes a copper plate 20 as a fifth conductive portion, which is disposed to face the copper plate 18 in parallel with each other and is electrically connected to the copper plate 13. Therefore, in the connection structure of FIG. 2, the copper plate 13 and the copper plate 20 constitute the first conductor.

In this case, in particular, the first conductor (the copper plate 13,
20) The degree of freedom in selecting the flow path of the current flowing through the
Further lower inductance is realized in relation to the current flow path in the conductor (copper plates 15, 16, 18). Also,
When each capacitor element 11 is arranged, since the copper plate 20 is present, by attaching each capacitor element 11 to this copper plate 20, the end faces of the arranged capacitor elements 11 are aligned in one plane. Accordingly, there is an advantage that the work of arrangement is easy and the finish is good.

FIG. 3 shows a further modified version of the first conductor. That is, the copper plate 13 is provided with a copper plate 21 as a first folded conductive portion extending from the other end (the lower end side in the drawing) in the arrangement direction of each capacitor element 11 and reaching one end in the arrangement direction,
The lead copper plate 14 is connected to the upper end. Therefore, in FIG. 3, the first conductor is formed of the copper plates 13, 20, and 21. Although not shown, the copper plate 13 and the copper plate 2
An insulating plate is interposed between the two to insulate them.

In this case, the lead to both terminals is made from the other end (lower end) in the arrangement direction and the second conductor from one end (upper end) in the arrangement direction. Is further improved, and as a result, the internal inductance of the capacitor group is further reduced.

Next, FIG. 4 shows a case where a folded conductive portion is provided on the second conductor side. That is, the copper plate 16 is provided with a copper plate 22 as a second folded conductive portion extending from the other end (in the figure, the lower end side) of each capacitor element 11 in the arrangement direction and reaching one end in the arrangement direction. Connected. Therefore, in FIG. 4, the second conductor is the copper plate 15, 1
6, 18, and 22. Although not shown, an insulating plate is interposed between the copper plate 16 and the copper plate 22 to achieve insulation between the two.

In this case as well, as in FIG. 3, the lead-out to both terminals is made from both ends in the arrangement direction by the first and second conductors. The internal inductance as a group is reduced.

Embodiment 3 FIG. FIG. 5 is a perspective view showing a structure in which a plurality of groups of capacitors described above are collected, and the plurality of groups are connected in parallel and connected to terminals. FIG. 1A shows one group, which is described in the above embodiment.

Next, FIG. 5B shows a plurality of capacitor groups shown in FIG. 1A (six groups in this example) arranged at predetermined positions. Here, three rows are provided on the near side, and the outer peripheral ends of the capacitor elements 11 of each group are arranged side by side in a direction facing each other. Also, three rows are arranged in the same direction on the depth side. The front and depth side row groups are arranged side by side in such a direction that the axial ends of the capacitor elements 11 face each other. Further, the lead copper plates 14, 17
Is located on the opposite side of the two row groups.

In FIG. 5B, reference numeral 23 denotes a common copper plate as a first common conductive plate to which the lead copper plates 14 from each capacitor group are electrically connected, and 24 denotes a lead copper plate 17 from each capacitor group. A common copper plate as a second common conductive plate electrically connected, 25 is a press board interposed between the two common copper plates 23 and 24 to electrically insulate them;
It is an insulating plate such as various insulating papers, various insulating films, various insulating sheets, and the like. The common copper plates 23 and 24 and the insulating plate 25 are electrically and mechanically coupled to terminals (not shown), and the details of the structure will be described later.

FIG. 5 (3) shows a state in which the lead copper plates 14 and 17 of each capacitor group are connected to the common copper plates 23 and 24, respectively. And 27 to one and the other of the terminals.

Next, the line AA 'in FIG.
6 and FIG. 7 which is an exploded perspective view of the common copper plates 23 and 24 and the insulating plate 25 taken along the line B-C 'and the line CC'. Details will be described.

FIGS. 6 (1), (2) and (3) show the AA 'section, the BB' section and the C- section of FIG. 5 (3), respectively.
The C 'section is shown. In the figure, T1 is one of the terminals mounted through the top plate 28 of the capacitor case,
2 is the other of the terminals. 26 is a bolt forming the center conductor of the insulator 29 forming the terminal T1, and 27 is a bolt forming the center conductor of the insulator 29 forming the terminal T2. 3
Reference numerals 0, 31 and 32 denote washers and nuts through which the bolt 26 is inserted and screwed, respectively, and reference numerals 33 and 34 denote washers and nuts through which the bolt 27 is inserted and screwed, respectively.

FIG. 7 is an exploded perspective view for explaining the assembling state of each component of this coupling structure. In the figure, the common copper plate 23 is provided with a round hole 23 a through which the bolt 26 is inserted and insulation with the bolt 27. A concave portion 23b for securing is formed. Similarly, the common copper plate 24 is formed with a concave portion 24 a for securing insulation from the bolt 26 and a round hole 24 b for inserting the bolt 27. Also, the insulating plate 2
5 has round holes 25a and 25b through which bolts 26 and 27 are inserted, respectively. The reason why the insulating plate 25 is formed in a channel-shaped cross section in which both ends in the width direction thereof are bent is that the nuts 32 and 34 and the like are used when the common copper plate and the like are integrally connected to the terminals T1 and T2. And to secure a space for the tightening work between the capacitor group.

Next, the procedure for assembling the connection portion between the plurality of capacitor groups and the terminals will be described. As shown in FIG. 5 (2), each capacitor group is arranged. First, with the common copper plate 23 fixed at a predetermined position, the lead copper plate 14 from each group is soldered or brazed to the common copper plate 23. Make an electrical connection. In this case, since the shape of the common copper plate 23 is close to the shape of the two-row group viewed from the arrangement direction of the capacitor elements (vertical direction in the figure), the lead-out position of each lead copper plate 14 is unchanged. 23, the connection structure is simplified. In the same manner, the lead copper plates 17 from each group are electrically connected to the common copper plate 24.

Next, an insulating plate 25 is inserted between the common copper plates 23, 24, and bolts 26,
27, a terminal T1 integrated with the top plate 28 so that the
In combination with T2, both common copper plates 23, 24 are connected to terminals T1, T2 using washers 30, 31, 33 and nuts 32, 34. As a result, both common copper plates 23,
24 are both mechanically and integrally connected to the terminals T1 and T2, and the common copper plate 23 is a bolt 26, and thus a terminal T1.
And the common copper plate 24 is a bolt 27, so that the terminal T2
Respectively.

In this case, the positions of the round holes 23a and the concave portions 23b and the like are relatively freely selected according to the mounting positions of the bolts 26 and 27 regardless of the lead-out positions of the lead copper plates 14 and 17 of each group. be able to. Moreover, the common copper plates 23, 2
The current flowing through 4 flows as a reciprocating path through both common copper plates 23 and 24 arranged close to and parallel to each other via an insulating plate 25, so that the inductance of this portion can be suppressed to an extremely low value.

In the above description, for example, the rectangular recess 23b is formed in the common copper plate 23 to ensure insulation from the bolt 27, but a round hole having a diameter having a required insulation dimension is formed. You may. Also, as an assembling sequence, the terminals are integrated with the top plate 28 in advance, and thereafter,
The bolts of the terminals are inserted into the round holes of the common copper plate 23 or the like to be tightened and fixed.
3 and the like may be assembled beforehand, and the connection between the common copper plate 23 and the like and each capacitor group and the accommodation in the case may be performed in a subsequent process.

Further, although not shown, each lead copper plate 1
If a flexible portion is provided in a part of the components 4 and 17, the dimensional variation of each portion between the common copper plate 23 and the like and the capacitor group can be absorbed by the flexible portion. There is an advantage that the dimensional accuracy and the assembly dimensional accuracy can be relaxed to reduce the product cost and the workability can be improved.

Embodiment 4 FIG. FIG. 8 is a perspective view showing a structure of a capacitor according to Embodiment 4 of the present invention. Here, an example is described in which four capacitor groups are arranged to form a one-row group. The connection structure between the common copper plates 23, 24 and the lead copper plates 14, 17 from each group is basically the same as that of the third embodiment.
, But the arrangement of each group is different from that of the third embodiment. That is, the lead-out positions of the lead copper plates 14 and 17 in the axial direction of the capacitor element 11 are opposite to each other in adjacent groups. As a result, as shown in FIG. 8, for example, the connection positions of the lead copper plates 17 to the common copper plate 24 are distributed evenly around the common copper plate 24 without being offset to one side of the common copper plate 24. , A low inductance can be secured.

In the above embodiment, one common copper plate is used for each terminal. However, depending on the number of capacitors connected in parallel, a structure in which a plurality of common copper plates are used for each terminal is used. It may be. Also,
In the case where a plurality of groups of capacitors are connected using a common copper plate, the number of groups of capacitors is 1 as described in the above embodiment.
It is not limited to the row group and the two-row group.

Further, in the above description, the capacitor element is formed by winding a metal vapor-deposited film. However, the present invention is not limited to this type, and the present invention relates to a single shaft set on the outer shape. The present invention can be widely applied to capacitor elements having electrodes formed at both ends in the direction, and has the same effect. In the above description, a capacitor having only a parallel connection structure has been described.However, a capacitor connected in parallel with the capacitor element in each embodiment, and even a capacitor connected in series, the parallel connection portion includes: The present invention can be applied as it is, and has the same effect.

[0041]

As described above, in the capacitor according to the first aspect, the first and second capacitor elements are arranged in parallel, and the electrodes formed at one axial end of the first and second capacitor elements are electrically connected to each other. And a second conductor that electrically connects the electrodes formed at the other end in the axial direction of each of the capacitor elements to each other. The first conductor extends in the arrangement direction of each of the capacitor elements, and A first conductive portion disposed opposite to one end in the axial direction, wherein the second conductor extends in the arrangement direction of the capacitor elements and is disposed opposite to the other end in the axial direction; A second conductive portion, a third conductive portion extending in the arrangement direction of the respective capacitor elements and disposed in parallel with and opposed to the first conductive portion, and in the arrangement direction of the respective capacitor elements. The second conductive portion and the third conductive portion are disposed in parallel and electrically connected to each other. Has a fourth conductive portion for connecting,
A first lead-out portion for electrically connecting the first conductor to one of the terminals is led out from an end of the first conductive portion;
Since the second lead portion for electrically connecting the second conductor to the other of the terminals is led out from the end of the third conductive portion, a plurality of capacitor elements are connected in parallel. The internal inductance of the group of capacitors is reduced.

Further, the first conductor of the capacitor according to the second aspect extends in the arrangement direction of the capacitor elements and is disposed parallel to and opposed to the fourth conductive portion. Especially, since the fifth conductive portion is electrically connected,
The degree of freedom in selecting the flow path of the current flowing through the conductor increases, and the inductance can be further reduced.

Also, in the capacitor according to the third aspect, the second lead portion is led out from one end of the third conductive portion in the arrangement direction of each capacitor element, and the first conductive portion is connected in the arrangement direction. A first extending from the other end and reaching one end in the arrangement direction
And the first lead portion is led out from one end of the first folded conductive portion in the arrangement direction, so that the current balance in each capacitor element is further improved. Also, the internal inductance is reduced.

Further, in the capacitor according to the fourth aspect, the first lead portion is led out from one end of the first conductive portion in the arrangement direction of each capacitor element, and the third conductive portion is connected in the arrangement direction. A second extending from the other end and reaching one end in the arrangement direction
And the second lead-out portion is led out from one end of the second folded conductive portion in the arrangement direction, so that the current balance in each capacitor element is further improved. Also, the internal inductance is reduced.

According to a fifth aspect of the present invention, there is provided a capacitor comprising a plurality of groups each including a plurality of capacitor elements connected in parallel using first and second conductors to form a group. Via a first common conductive plate and an insulating member electrically and mechanically coupled to one of the
A second common conductive plate disposed parallel to and opposed to the common conductive plate and electrically and mechanically coupled to the other of the terminals. Since the first and second lead portions of each group are electrically connected to the second common conductive plate, the positions of the terminals are compared within the range of the common conductive plate. Can be freely selected,
The inductance of the common conductive plate is also reduced.

The capacitor according to claim 6 has a plurality of groups of capacitors arranged in a row with the outer peripheral ends of the capacitor elements of each group arranged in a direction facing each other. The shape of the first and second common conductive plates is close to the shape of the one row group as viewed from the arrangement direction of each capacitor element, and the leading-out position of the first and second lead-out portions in the axial direction of the capacitor element is Since the positions of the adjacent groups are opposite to each other, the positions of connection with the lead-out portions are substantially uniformly distributed around one side of the common conductive plate without being offset to one side, and low inductance of this portion is realized.

Further, the capacitor according to claim 7 has a two-row group in which a plurality of groups of capacitors are arranged in a row in a direction in which the outer peripheral ends of the capacitor elements of the respective groups face each other. In this case, the respective row groups are arranged side by side in the direction in which the axial ends of the capacitor elements face each other, and
And the shape of the second common conductive plate is close to the shape of the two rows viewed from the arrangement direction of the capacitor elements, and the leading-out positions of the first and second lead-out portions in the axial direction of the capacitor elements are set as described above. Since it is arranged on the opposite side of each row group, the connection position with the lead-out portion is distributed almost uniformly around the common conductive plate, and a parallel connection structure with low inductance and large capacity is realized.

Further, the capacitor according to the eighth aspect has the flexible portions in the first and second lead-out portions, so that the dimensional imbalance between the common conductive plate and the capacitor group can be easily absorbed. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a parallel connection structure of capacitors according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing a parallel connection structure of capacitors according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a further modification of the parallel connection structure shown in FIG. 2;

FIG. 4 is a perspective view showing a further modification of the parallel connection structure shown in FIG. 2;

FIG. 5 is a perspective view showing a parallel connection structure of capacitors according to a third embodiment of the present invention.

FIG. 6 shows AA ', BB' and C- in FIG. 5 (3).
It is C 'sectional drawing.

FIG. 7 is an exploded perspective view for explaining an assembling state of each component of the coupling structure of the common copper plate and the terminal.

FIG. 8 is a perspective view showing a parallel connection structure of capacitors according to a fourth embodiment of the present invention.

FIG. 9 is a diagram showing a conventional parallel connection structure of capacitors.

[Explanation of symbols]

11 capacitor element, 12a, 12b electrode, 13,
15, 16, 18, 20, 21, 22, copper plate, 14, 1
7 Lead copper plate, 19 insulating plate, 23, 24 common copper plate, 25 insulating plate, 26, 27 volts, T1, T2
Terminal.

Claims (8)

[Claims] 1. A capacitor formed by electrically connecting a plurality of capacitor elements having electrodes formed at both ends in the axial direction to respective terminals, wherein each of the capacitor elements is arranged in parallel, and the axis of each of the capacitor elements is arranged. A first conductor that electrically connects the electrodes formed at one end in the direction with each other and a second conductor that electrically connects the electrodes formed at the other end in the axial direction of each of the capacitor elements with each other.
Wherein the first conductor has a first conductive portion that extends in the arrangement direction of the capacitor elements and is disposed to face one end in the axial direction. The second conductor includes: A second conductive portion extending in the direction in which the capacitor elements are arranged and disposed opposite to the other end in the axial direction; the first conductive portion extending in the direction in which the capacitor elements are arranged;
A third conductive portion disposed parallel to and opposed to the first conductive portion, and the second conductive portion and the third conductive portion disposed parallel to the arrangement direction of the respective capacitor elements. A fourth lead portion for electrically connecting the first conductor to one of the terminals is led out from an end of the first conductive portion; A capacitor, wherein a second lead portion for electrically connecting a second conductor to the other of the terminals is led out from an end of the third conductive portion. A first conductor extending in a direction in which the capacitor elements are arranged, disposed in parallel with and opposed to the fourth conductive portion, and electrically connected to the first conductive portion; 2. The capacitor according to claim 1, further comprising: 3. The second lead-out portion is led out from one end of the third conductive portion in the arrangement direction of each capacitor element, and the first conductive portion extends from the other end in the arrangement direction and extends in the arrangement direction. 3. The device according to claim 1, further comprising a first folded conductive portion extending to one end, wherein the first lead portion is led out from one end of the first folded conductive portion in the arrangement direction. Capacitors. 4. A first lead portion extending from one end of the first conductive portion in the arrangement direction of each capacitor element, and a third conductive portion extending from the other end in the arrangement direction and extending in the arrangement direction. 3. The device according to claim 1, further comprising a second folded conductive portion extending to one end, wherein the second lead portion is led out from one end of the second folded conductive portion in the arrangement direction. Capacitors. 5. A capacitor comprising a plurality of capacitor elements connected in parallel by using a first and a second conductor to form a group, wherein one of the terminals is electrically and mechanically connected. A second common conductive plate disposed in parallel with and opposed to the first common conductive plate via the coupled first common conductive plate and the insulating member and electrically and mechanically coupled to the other of the terminals; A first lead portion of each group is electrically connected to the first common conductive plate, and a second lead portion of each group is connected to the second lead portion.
5. The capacitor according to claim 1, wherein the capacitor is electrically connected to the common conductive plate. 6. A plurality of groups of capacitors are arranged side by side in a direction in which outer peripheral ends of the capacitor elements of each group are opposed to each other.
When the first and second common conductive plates are arranged in a row group, the shapes of the first and second common conductive plates are close to the shape of the one row group as viewed from the arrangement direction of the capacitor elements, and the first and second common conductive plates are arranged in the axial direction of the capacitor elements. 6. The capacitor according to claim 5, wherein the lead-out positions of the second drawer and the second drawer are opposite to each other in adjacent groups. 7. A plurality of groups of capacitors are arranged side by side in a direction in which the outer peripheral ends of the capacitor elements of each group oppose each other.
In a case where two rows are provided as the row groups, the row groups are arranged side by side in the direction in which the axial ends of the capacitor elements face each other, and the shape of the first and second common conductive plates is changed to each capacitor element. And the lead-out position of the first and second lead portions in the axial direction of the capacitor element is on the side opposite to the opposite end of each of the row groups. The capacitor according to claim 5, wherein 8. The capacitor according to claim 5, wherein the first and second drawers have a flexible portion.