WO2023047993A1

WO2023047993A1 - Film capacitor, connection-type capacitor, inverter, and electric vehicle

Info

Publication number: WO2023047993A1
Application number: PCT/JP2022/033970
Authority: WO
Inventors: 耕世神垣
Original assignee: 京セラ株式会社
Priority date: 2021-09-22
Filing date: 2022-09-09
Publication date: 2023-03-30

Abstract

In a film capacitor according to the present invention, a first metal layer comprises first band-shaped metal layers extending along the first direction, and second band-shaped metal layers having an electrically coupled pair extending to a second common metal layer side in an electrically insulated state; a second metal layer comprises a third band-shaped metal layer extending along the first direction to a first common metal layer side and overlapping, in a plan view, the first band-shaped metal layers or the second band-shaped metal layer, and a fourth band-shaped metal layer extending along the first direction in an electrically insulated state, and overlapping, in a plan view, two adjacent band-shaped metal layers among the first band-shaped metal layers and the second band-shaped metal layers; and a first end of the second common metal layer side of the third band-shaped metal layer and the fourth band-shaped metal layer is positioned at the second common metal layer side separated by a predetermined distance from a second end of the first band-shaped metal layers and the second band-shaped metal layers.

Description

Film capacitors, coupled capacitors, inverters and electric vehicles

The present disclosure relates to film capacitors, coupled capacitors, inverters, and electric vehicles.

A conventional film capacitor is described, for example, in Patent Document 1.

WO2019/069624

In the film capacitor of the present disclosure, a first metal layer is provided on one surface, and the first metal layer is provided on a first edge of the one surface in a first direction, and a second metal layer perpendicular to the first direction. a first dielectric film having a first common metal layer provided along the direction of
A second metal layer is provided on one surface, and the second metal layer is provided on a second edge of the one surface in a first direction along a second direction perpendicular to the first direction. and a second dielectric film having a second common metal layer, wherein a portion of the first metal layer and a portion of the second metal layer overlap in plan view. and,
a first metal electrode and a second metal electrode formed on each of a pair of end surfaces of the main body and electrically connected to the first metal layer and the second metal layer;
The first metal layer is
a first strip-shaped metal layer extending in the first direction toward the second common metal layer while being electrically connected to the first common metal layer;
a second strip-shaped metal layer electrically connected to the first common metal layer and the second common metal layer and extending toward the second common metal layer while being electrically insulated from the first common metal layer and the second common metal layer; ,
The second metal layer is
While electrically connected to the second common metal layer, it extends along the first direction toward the first common metal layer, and in plan view, the first strip-shaped metal layer or the second strip-shaped metal a third strip-shaped metal layer overlying the layer;
In a state electrically insulated from the first common metal layer and the second common metal layer, the first strip-shaped metal layer extends along the first direction toward the second common metal layer and, in plan view, the first strip-shaped metal layer. and a fourth strip-shaped metal layer overlapping two adjacent strip-shaped metal layers among the second strip-shaped metal layers,
The first ends of the third strip-shaped metal layer and the fourth strip-shaped metal layer on the side of the second common metal layer are separated from the second ends of the first strip-shaped metal layer and the second strip-shaped metal layer by a predetermined distance. It is positioned on the second common metal layer side.

In the film capacitor of the present disclosure, a first metal layer is disposed on one surface, and the first metal layer is formed on the first edge in the first direction of the one surface and the second edge in the first direction of the one surface. a first dielectric film having at its edges a first common metal layer and a second common metal layer provided along a second direction perpendicular to the first direction;
a second dielectric film having a second metal layer disposed on one surface thereof; Overlapping main body,
a first metal electrode and a second metal electrode formed on each of a pair of end surfaces of the main body in the first direction and electrically connected to the first metal layer and the second metal layer;
The first metal layer is
While electrically connected to the first common metal layer, it extends along the first direction toward the second common metal layer, or is electrically connected to the second common metal layer. , a plurality of first strip-shaped metal layers extending along the first direction toward the first common metal layer;
A pair of electrically connected second strips extending in a first direction toward the second common metal layer while being electrically insulated from the first common metal layer and the second common metal layer a metal layer;
The second metal layer is
a third strip-shaped metal layer overlapping the first strip-shaped metal layer or the second strip-shaped metal layer in plan view while being electrically insulated from the first common metal layer and the second common metal layer; ,
The first end of the third strip-shaped metal layer on the second common metal layer side is separated from the second ends of the first strip-shaped metal layer and the second strip-shaped metal layer on the second common metal layer side by a predetermined distance. It is positioned on the second common metal layer side.

In the coupled capacitor of the present disclosure, a plurality of film capacitors including the film capacitors described above are connected by bus bars.

The inverter of the present disclosure includes a bridge circuit composed of switching elements, and a capacitive section connected to the bridge circuit and including the film capacitor described above.

An electric vehicle of the present disclosure includes a power source, the inverter connected to the power source, a motor connected to the inverter, and wheels driven by the motor.

Objects, features and advantages of the present disclosure will become more apparent from the following detailed description and drawings.
3 is a plan view of the first dielectric film of the three-series film capacitor of the first embodiment; FIG. FIG. 4 is a plan view of a second dielectric film; It is the top view which looked at the film capacitor from upper direction. It is a cross-sectional schematic diagram which shows the laminated state of a film. 4 is an enlarged plan view of the vicinity of the connection metal layer of the first strip-shaped metal layer; FIG. FIG. 11 is an enlarged plan view of the vicinity of the connection metal layer of the third strip-shaped metal layer; FIG. 3 is an exploded perspective view showing a laminated state (before cutting) of dielectric films; FIG. 4 is an external perspective view showing the configuration of the main body after cutting; FIG. 3 is an external perspective view showing a configuration after thermal spraying of metal electrodes; It is the top view which looked at 1st Example of the 3 series film capacitor of 2nd Embodiment. FIG. 11 is a top plan view of a second example of the three-series film capacitor of the second embodiment; FIG. 11 is a top plan view of a third example of the three-series film capacitor of the second embodiment; FIG. 11 is a top plan view of the fourth example of the three-series film capacitor of the second embodiment; It is the top view which looked at the 5th Example of the 3 series film capacitor of 2nd Embodiment. FIG. 11 is a top plan view of a sixth example of the three-series film capacitor of the second embodiment; FIG. 11 is a top plan view of the first example of the 4-series film capacitor of the third embodiment; FIG. 11 is a top plan view of the second example of the 4-series film capacitor of the third embodiment; It is the top view which looked at the 3rd Example of the 4 series film capacitor of 3rd Embodiment. FIG. 11 is a top plan view of a fourth example of the 4-series film capacitor of the third embodiment; It is the top view which looked at 5th Example of the 4 series film capacitor of 3rd Embodiment. It is the top view which looked at the 6th Example of the 4 series film capacitor of 3rd Embodiment. It is the top view which looked at the 7th Example of the 4 series film capacitor of 3rd Embodiment. FIG. 11 is a top plan view of an eighth example of the 4-series film capacitor of the third embodiment; It is the top view which looked at 1st Example of the 5 series film capacitor of 4th Embodiment. FIG. 11 is a top plan view of the second example of the 5-series film capacitor of the fourth embodiment; FIG. 11 is a top plan view of the first example of the 6-series film capacitor of the fifth embodiment; FIG. 11 is a top plan view of the second example of the 6-series film capacitor of the fifth embodiment; FIG. 12 is a top plan view of the third example of the 6-series film capacitor of the fifth embodiment; FIG. 11 is a top plan view of an 8-series film capacitor according to a sixth embodiment; 1 is a partially cutaway perspective view showing an embodiment of a film capacitor; FIG. 1 is a perspective view schematically showing the configuration of an embodiment of the present disclosure relating to a coupled capacitor; FIG. 1 is an electric circuit diagram for explaining the configuration of an embodiment of the present disclosure relating to an inverter; FIG. 1 is a schematic configuration diagram for explaining the configuration of an embodiment of the present disclosure related to an electric vehicle; FIG.

First, a film capacitor having a configuration on which the film capacitor of the present disclosure is based will be described.

In a film capacitor with a basic structure, aluminum, which has excellent moisture resistance, is widely used as a vapor deposition electrode, and oxidation tends to occur with the boundary between the vapor deposition electrode portion and the non-electrode portion serving as a starting point, as described in Patent Document 1. In the prior art, when voltage is applied to the film capacitor, electric field concentration tends to occur at the boundary between the vapor deposition electrode portion and the non-electrode portion, and the invention describes an invention that aims to suppress a decrease in capacitance due to oxidation of the vapor deposition electrode. It is

In the prior art described in Patent Document 1, it is possible to suppress the decrease in capacitance due to the oxidation of the deposition electrode, but due to the non-uniformity of the capacitance of each capacitor cell connected in series, the voltage applied to each capacitor cell There is a problem that the effective voltage applied to the capacitor becomes large and small, shortening the life of the capacitor cell. Such problems have not only two series film capacitors, but also three or more series film capacitors.

An object of the present disclosure is to provide a highly reliable three-series or more film capacitor in which capacitance differences are unlikely to occur in the capacitor cells.

A three-series film capacitor according to the first embodiment of the present disclosure will be described with reference to the drawings. 1A and 1B are plan views of dielectric films for a three-series film capacitor. FIG. 1C is a plan view of the film capacitor viewed from above, and FIG. 1D is a schematic cross-sectional view showing the lamination state of the films.

The 3-series film capacitor 103 includes a body portion 43 in which the first dielectric film 13 and the second dielectric film 23 are laminated, a first metal electrode 53A, and a second metal electrode 53B.

The first dielectric film 13 has a first metal layer 33 disposed on one surface thereof, and the first metal layer 33 extends along a first edge in a first direction on one surface and in a second direction orthogonal to the first direction. has a first common metal layer 3Ac provided along the direction of . The second dielectric film 23 is provided with a second metal layer 83 on one surface, and the second metal layer 83 is provided on a second edge of the first direction of the one surface in a second direction orthogonal to the first direction. has a second common metal layer 3Bc provided along the direction of . The body portion 43 is laminated such that a portion of the first metal layer 33 and a portion of the second metal layer 83 overlap in plan view. The first metal electrode 53A and the second metal electrode 53B are respectively formed on a pair of end surfaces of the body portion 43 in the first direction and electrically connected to the first metal layer 33 and the second metal layer 83. .

The first metal layer 33 includes a first strip-shaped metal layer 3Aa extending toward the second common metal layer 3Bc along the first direction while being electrically connected to the first common metal layer 3Ac, and a first common metal layer 3Aa. and a second strip-shaped metal layer 3Ba extending toward the second common metal layer 3Bc while being electrically insulated from the metal layer 3Ac and the second common metal layer 3Bc. The second metal layer 83 extends toward the first common metal layer 3Ac along the first direction while being electrically connected to the second common metal layer 3Bc, and in a plan view, the first strip-shaped metal layer 3Aa. Alternatively, in a state in which the third strip-shaped metal layer 3Ca overlapping the second strip-shaped metal layer 3Ba is electrically insulated from the first common metal layer 3Ac and the second common metal layer 3Bc, the second common metal layer 3Bc extends along the first direction. and a fourth strip-shaped metal layer 3Da that extends toward the metal layer 3Bc and overlaps two adjacent strip-shaped metal layers out of the first strip-shaped metal layer 3Aa and the second strip-shaped metal layer 3Ba in plan view. The first ends of the third strip-shaped metal layers 3Ca and the fourth strip-shaped metal layers 3Da on the side of the second common metal layer 3Bc are separated from the second ends of the first strip-shaped metal layers 3Aa and the second strip-shaped metal layers 3Ba by a predetermined distance. 2 located on the common metal layer 3Bc side.

By constructing the first dielectric film and the second dielectric film as shown in FIGS. 1A, 1B, 1C, and 1D, the first and second common metal layers 3Ac and 3Bc are parallel A three-series film capacitor 103 can be formed such that

Organic resin materials such as polypropylene, polyethylene terephthalate, polyarylate, and cycloolefin polymer are used as constituent materials of the base films of the first dielectric film 13 and the second dielectric film 23 .

The first strip-shaped metal layer 3Aa, the second strip-shaped metal layer 3Ba on the surface of the first dielectric film 13, and the second metal layer 83 on the surface of the second dielectric film 23 are formed by metal vapor deposition on the base film.

FIG. 2 is an enlarged plan view of the vicinity of the connection metal layer of the first strip-shaped metal layer. FIG. 3 is an enlarged plan view of the vicinity of the connection metal layer of the third strip-shaped metal layer 3Ca. The first metal layer 33 includes a first connection metal layer 3Ab that connects the first common metal layer 3Ac and the first strip-shaped metal layer 3Aa, and a second connection metal layer 3Ab that connects the second common metal layer 3Bc and the third strip-shaped metal layer 3Ca. It further has two connection metal layers 3Bb.

The first connection metal layer 3Ab is directly connected to the first common metal layer 3Ac and is directly connected to the first connection wiring 3Ab1 extending in the first direction from the first common metal layer 3Ac and the first connection wiring 3Ab1. , a second connection wiring 3Ab2 extending in the second direction from the first connection wiring 3Ab1, and a second connection wiring 3Ab2 directly connected to the second connection wiring 3Ab2 and extending in the first direction from the second connection wiring 3Ab2 to form the first connection wiring 3Ab2. A third connection wiring 3Ab3 directly connected to the strip-shaped metal layer 3Aa is provided.

The second connection metal layer 3Bb is directly connected to the second common metal layer 3Bc and directly connected to the fourth connection wiring 3Bb1 extending in the first direction from the second common metal layer 3Bc and the fourth connection wiring 3Bb1. , a fifth connection wiring 3Bb2 extending in the second direction from the fourth connection wiring 3Bb1, and a fifth connection wiring 3Bb2 directly connected to the fifth connection wiring 3Bb2 and extending in the first direction from the fifth connection wiring 3Bb2 to provide a third connection wiring 3Bb2. and a sixth connection wiring 3Bb3 directly connected to the strip-shaped metal layer 3Ca. In this embodiment, the second connection metal layer 3Bb is located at a position obtained by rotating the first connection metal layer 3Ab by 180° around the central portion of the first connection metal layer 3Ab in the x direction.

The first connection wiring 3Ab1, the second connection wiring 3Ab2, and the third connection wiring 3Ab3 provided in the first connection metal layer 3Ab have a narrower current path than the first strip-shaped metal layer 3Aa, and the second connection metal layer 3Bb The fourth connection wiring 3Bb1, the fifth connection wiring 3Bb2, and the sixth connection wiring 3Bb3 provided have narrower current paths than the third strip-shaped metal layer 3Ca, and therefore have high electrical resistance values. The second connection metal layer 3Bb functions as a fuse.

Even if the dielectric breakdown of the first dielectric film 13 occurs, the fuse pattern scatters and the connection between the metal layers is cut off, so that the 3-series film capacitor 103 has a long life and high reliability. is possible.

The length L of the second connection wiring 3Ab2 in the second direction is greater than the width W of the first strip-shaped metal layer 3Aa. The length L in the second direction is the projected length of the second connection metal layer 3Bb in the first direction. That is, the end of the second connection wiring 3Ab2 on the side connected to the first connection wiring 3Ab1 is located outside the first strip-shaped metal layer 3Aa in the width direction, and the second connection wiring 3Ab2 and the third connection wiring 3Ab3 The end on the continuous side is positioned outside in the width direction of the first strip-shaped metal layer 3Aa in the second direction. The first connection wiring 3Ab1 and the third connection wiring 3Ab3 are also located outside the first strip-shaped metal layer 3Aa in the width direction. The length L of the fifth connection wiring 3Bb2 in the second direction is greater than the width W of the third strip-shaped metal layer 3Ca. The length L in the second direction is the projected length of the second connection metal layer 3Bb in the first direction. That is, the end of the fifth connection wiring 3Bb2 on the side connected to the fourth connection wiring 3Bb1 is located outside the third strip-shaped metal layer 3Ca in the width direction, and the fifth connection wiring 3Bb2 and the sixth connection wiring 3Bb3 The end on the continuous side is positioned outward in the width direction of the third strip-shaped metal layer 3Ca in the second direction. The fourth connection wiring 3Bb1 and the sixth connection wiring 3Bb3 are also located outside the third strip-shaped metal layer 3Ca in the width direction.

Here, a method for manufacturing a multilayer film capacitor will be explained. FIG. 4 is an exploded perspective view showing a laminated state of dielectric films (before cutting), and FIG. 5 is an external perspective view showing the configuration of the main body after cutting. FIG. 6 is an external perspective view showing the configuration after thermal spraying of the metal electrode.

First, as shown in FIG. 4, a first dielectric film having a first strip-shaped metal layer 3Aa and a second strip-shaped metal layer 3Ba extending in the x-direction and a first common metal layer 3Ac extending in the y-direction on the surface of the film. 13 and a second dielectric film 23 having a third strip-shaped metal layer 3Ca, a fourth strip-shaped metal layer 3Da, and a second common metal layer 3Bc are stacked alternately.

As a method of lamination, conventionally known methods such as stacking the

long dielectric films

13 and 23 and winding them around a cylinder or a cylinder with a polygonal cross section can be used. A virtual line (a two-dot chain line) in FIG. 4 indicates a cutting line after being wound around a cylinder or the like.

FIG. 5 is a view of the body portion 43 after being cut to a predetermined length, viewed from the cut surface (y-direction end face) direction. FIG. 6 is an external perspective view showing the configuration after thermal spraying of the metal electrode. As shown in FIG. 5, the first dielectric film 13 and the second dielectric film 23, which are vertically adjacent to each other, are stacked with their positions slightly shifted in the x direction (offset state). The first common metal layer 3Ac and the second common metal layer 3Bc are exposed on both end faces of the 43 in the x direction. As shown in FIG. 5, the first strip-shaped metal layer 3Aa and the second strip-shaped metal layer 3Ba exposed on the cut surface of the main body 43 are formed by cutting the first connection metal layer 3Ab and the second connection metal layer 3Bb. , is not connected to the first common metal layer 3Ac and the second common metal layer 3Bc, and is electrically insulated from the first common metal layer 3Ac and the second common metal layer 3Bc.

The film capacitor of the second embodiment will be explained. FIG. 7 is a top plan view of the first example of the three-series film capacitor of the second embodiment. The three-series film capacitor 203 comprises a first strip-shaped metal layer 3Aa electrically connected to a first common metal layer 3Ac by a first connection metal layer 6Ab. The 3-series film capacitor 203 is arranged such that the pair of second strip-shaped metal layers 3Ba in the 3-series film capacitor 103 (see FIGS. 1C and 1D) of the third embodiment are separated in the first direction (x direction). Two sets of a pair of divided rectangular second strip-shaped metal layers 3Baa are provided. A pair of second strip-shaped metal layers 3Baa are electrically connected to each other by a connection metal layer 207 .

The 3-series film capacitor 203 is a state in which the third strip-shaped metal layer 3Ca (see FIG. 1C) in the 3-series film capacitor 103 of the third embodiment is further divided so as to be spaced apart in the first direction (x direction). , overlaps each pair of the second strip-shaped metal layers 3Baa among the pair of electrically connected second strip-shaped metal layers 3Baa, and is electrically connected to the second common metal layer 3Bc by the second connection metal layer 3Bb. and a pair of third strip-shaped metal layers 3Caa. The 3-series film capacitor 203 further includes the 4th strip-shaped metal layer 3Da (see FIG. 1C) of the 3-series film capacitor 103 of the third embodiment separated in the first direction (x direction). It has a pair of fourth strip-shaped metal layers 3Daa respectively overlapping the metal layer 3Aa and the other pair of second strip-shaped metal layers 3Baa of the pair of electrically connected second strip-shaped metal layers 3Baa. The second connection metal layer 3Bb has a fourth connection wiring 3Bb1 and a fifth connection wiring 3Bb2. According to such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the first connection metal layer 6Ab scatters and the first strip-like metal layer 3Aa and the first common metal layer 3Ac are separated from each other. Connection is interrupted. Further, when the fifth connection wiring 3Bb2 is scattered, the connection between each third strip-shaped metal layer 3Caa and the second common metal layer 3Bc is cut off, so that the capacity decrease is small and the life of the 3-series film capacitor 203 is extended. And it is possible to have high reliability.

FIG. 8 is a plan view showing a second example of the three-series film capacitor of the second embodiment. The same reference numerals are given to the parts corresponding to those of the second embodiment in FIG. In the three-series film capacitor 203A of this embodiment, the first strip-shaped metal layer 3Aa is directly connected to the first common metal layer 3Ac. The fourth strip-shaped metal layer 3Daa is divided into two fourth strip-shaped metal layers 3Daa1 and 3Daa2, and the fourth strip-shaped metal layers 3Daa1 and 3Daa2 are connected by a connection metal layer 209. FIG. The connection metal layer 209 has a function as a fuse with a high electrical resistance value, like the first connection metal layer 3Ab and the second connection metal layer 3Bb. Other configurations are the same as those of the embodiment of FIG. The third strip-shaped metal layer 3Caa is overlaid with the second strip-shaped metal layer 3Baa, the fourth strip-shaped metal layer 3Daa1 is overlaid with the first strip-shaped metal layer 3Aa, and the fourth strip-shaped body portion 3Daa2 is overlaid with the second strip-shaped metal layer 3Baa. . With such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the connection metal layer 209 scatters and the connection between the fourth strip-shaped metal layers 3Daa1 and 3Daa2 is cut off. Therefore, it is possible to extend the life of the three-series film capacitor 203A and to have high reliability.

FIG. 9 is a plan view showing a third example of the three-series film capacitor of the second embodiment. Parts corresponding to those of the embodiments of FIGS. 7 and 8 are given the same reference numerals. In the three-series film capacitor 203B of this embodiment, the third strip-shaped metal layer 3Caa and the second common metal layer 3Bc are connected by the fourth connection wiring 3Bb1, the connection wiring 210, and the fifth connection wiring 3Bb2. The connection wiring 210 has a function as a fuse with a high electrical resistance value, like the first connection metal layer 3Ab and the second connection metal layer 3Bb. According to such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the connection wiring 210 is scattered and the connection between the third strip-shaped metal layer 3Caa and the second common metal layer 3Bc is prevented. is cut off, it is possible to make the three-series film capacitor 203B long-lived and highly reliable by reducing the decrease in capacity.

FIG. 10 is a plan view showing a fourth example of the three-series film capacitor of the second embodiment. Parts corresponding to those in the embodiments of FIGS. 7 to 9 are given the same reference numerals. The 3-series film capacitor 203C of this embodiment has a configuration in which the third strip-shaped metal layer 3Caa and the fourth strip-shaped metal layer 3Daa of the 2-split type 3-series film capacitor 203 shown in FIG. 7 are divided into three. The 3-series film capacitor 203C includes a first strip-shaped metal layer 3Aa, which is rectangular in plan view and is electrically connected to the first common metal layer 3Ac by a first connection metal layer 6Ab; Three second strip-shaped metal layers 3Baa, 3Bab, and 3Bac electrically insulated from one strip-shaped metal layer 3Aa, and three second strip-shaped metal layers 3Baa, 3Bab, and 3Bac connected in parallel to the second common metal layer 3Bc by a second connection metal layer 3Bb, respectively. It comprises a third strip-shaped metal layer 3Caa and three fourth strip-shaped metal layers 3Daa electrically insulated from the second common metal layer 3Bc and the third strip-shaped metal layer 3Caa. The second connection metal layer 3Bb has a fourth connection wiring 3Bb1 and a fifth connection wiring 3Bb2. According to such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the fifth connection wiring 3Bb2 scatters and the gap between the third strip-shaped metal layers 3Caa and the second common metal layer 3Bc Since the connection is cut off, the reduction in capacitance is small, and the three-series film capacitor 203C can be made to have a long life and high reliability.

FIG. 11 is a plan view showing a fifth example of the three-series film capacitor of the second embodiment. Parts corresponding to those in the embodiment of FIG. 10 are given the same reference numerals. In the three-series film capacitor 203D of this embodiment, each of the three fourth strip-shaped metal layers 3Daa is divided into two fourth strip-shaped metal layers 3Daa1 and 3Daa2, and each pair of the fourth strip-shaped metal layers 3Daa1 and 3Daa2 are connected by a connection wiring 210 having a function as a fuse with a high electrical resistance value, similar to the first connection metal layer 3Ab and the second connection metal layer 3Bb. The first strip-shaped metal layer 3Aa is directly connected to the first common metal layer 3Ac. With such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the connection wiring 210 scatters and the connection between the fourth strip-shaped metal layers 3Daa1 and 3Daa2 is cut off. It is possible to make the 3-series film capacitor 203D have a long life and high reliability with little decrease in capacity.

FIG. 12 is a plan view showing a sixth example of the three-series film capacitor of the second embodiment. 10 and 11 are denoted by the same reference numerals. In the 3-series film capacitor 203E of this embodiment, one first strip-shaped metal layer 3Aa is divided into three first strip-shaped metal layers 3Aa1, 3Aa2, 3Aa3, and each of the first strip-shaped metal layers 3Aa1, 3Aa2, 3Aa3 are connected by a connection metal layer 211 having a function as a fuse with a high electrical resistance value, similar to the first connection metal layer 3Ab and the second connection metal layer 3Bb. Also, the third strip-shaped metal layer 3Caa is divided into three third strip-shaped metal layers 3Caa1, 3Caa2, 3Caa3, and these third strip-shaped metal layers 3Caa1, 3Caa2, 3Caa3 are connected to the second common layer by the second connection metal layer 3Cb. It is connected to metal layer 3Bc. The second connection metal layer 3Cb is composed of a first connection wire 3Cb1, a connection wire 212, a second connection wire 3Cb2, a connection wire 213, and a third connection wire 3Cb3. According to such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the connection metal layer 211 scatters and the connection between the third strip-shaped metal layers 3Caa1, 3Caa2, 3Caa3 is cut off. be. Further, when the

connection wirings

212 and 213 are scattered, the connection between the third strip-shaped metal layers 3Caa1, 3Caa2, 3Caa3 and the second common metal layer 3Bc is cut off, so that the capacity decrease is small and the 3-series film capacitor 203E can be made to have a long life and high reliability.

A 4-series film capacitor according to the third embodiment of the present disclosure will be described with reference to the drawings. FIG. 13 is a top plan view of the first example of the 4-series film capacitor of the third embodiment.

The 4-series film capacitor 104 includes a body portion 44 in which the first dielectric film 14 and the second dielectric film 24 are laminated, and a first metal electrode and a second metal electrode (not shown).

The first dielectric film 14 has a first metal layer 34 disposed on one surface, and the first metal layer 34 is formed on the first edge in the first direction on one surface and the second edge in the first direction on the one surface. The edge has a first common metal layer 4Ac and a second common metal layer 4Bc provided along a second direction orthogonal to the first direction. A second metal layer 84 is disposed on one surface of the second dielectric film 24 . A first metal electrode and a second metal electrode (not shown) are respectively formed on a pair of end surfaces of the body portion 44 in the first direction and electrically connected to the first metal layer 34 and the second metal layer 84. .

The first metal layer 34 extends in the first direction toward the second common metal layer 4Bc while being electrically connected to the first common metal layer 4Ac by the first connection metal layer 6Ab, or extends toward the second common metal layer 4Bc along the first direction. A plurality of first strip-shaped metal layers 4Aa extending toward the first common metal layer 4Ac in the first direction while being electrically connected to the common metal layer 4Bc by the first connection metal layer 6Ab; A second strip-shaped metal layer 4Ba that is electrically insulated from the metal layer 4Ac and the second common metal layer 4Bc and that is electrically connected to extend along the first direction toward the second common metal layer 4Bc. and have

The second metal layer 84 is electrically insulated from the first common metal layer 4Ac and the second common metal layer 4Bc, and overlaps the first strip-shaped metal layer 4Aa or the second strip-shaped metal layer 4Ba in plan view. It has two third strip-shaped metal layers 4Ca. The first end of the third strip-shaped metal layer 4Ca on the second common metal layer 4Bc side is separated from the second ends of the first strip-shaped metal layer 4Aa and the second strip-shaped metal layer 4Ba on the second common metal layer 4Bc side by a predetermined distance. It is positioned on the second common metal layer 4Bc side.

According to such a configuration, even if the dielectric breakdown of the first dielectric film 14 occurs, the first connection metal layer 6Ab is scattered, and the first strip-shaped metal layer 4Aa and the first common metal layer 4Ac are separated from each other. The connection is cut off, the second connection metal layer 6Bb is scattered, and the connection between the first strip-shaped metal layer 4Aa and the second common metal layer 4Bc is cut off. It is possible to extend the life and have high reliability.

FIG. 14 is a top plan view of a second example of the 4-series film capacitor of the third embodiment. A four-series film capacitor 204 has a first dielectric film 114 with a first metal layer 135 disposed on one side and a second metal layer 84 disposed on one side, the second metal layer 84 being the first dielectric film 114 on one side. A first common metal layer 4Ac provided along the second direction on the first edge in the direction of , and a second common metal layer 4Ac provided along the second direction on the second edge of one surface. and a second dielectric film 115 having a metal layer 4Bc, and a main body laminated such that a part of the first metal layer 135 and a part of the second metal layer 84 overlap in plan view. has 150.

The 4-series film capacitor 204 is further formed on each of a pair of end faces in the first direction of the body portion 150, and is electrically connected to the first metal layer 135 and the second metal layer 84. First metal electrodes (not shown) are provided. and a second metal electrode.

The first metal layer 135 is electrically connected to a pair of first strip-shaped metal layers 4ba extending toward the first common metal layer 4Ac, and is electrically connected to the second common metal layer 4ba. and a pair of second strip-shaped metal layers 4bb extending toward the layer 4Bc. The pair of first strip-shaped metal layers 4ba and the pair of second strip-shaped metal layers 4bb are electrically insulated from the first common metal layer 4Ac and the second common metal layer 4Bc.

The second metal layer 84 is electrically connected to the second common metal layer 4Bc by the second connection metal layer 6Bb2, and is connected to one of the first strip metal layers 4ba of the pair of first strip metal layers 4ba. In a state of being electrically connected to the third strip-shaped metal layer 4cb and the first common metal layer 4Ac through the first connection metal layer 6Bb1, the second strip-shaped metal layer 4bb of one of the pair of second strip-shaped metal layers 4bb is electrically connected to the first common metal layer 4Ac. A fourth strip-shaped metal layer 4ca, which overlaps the strip-shaped metal layer 4bb in plan view, is electrically insulated from the first common metal layer 4Ac and the second common metal layer 4Bc, and is electrically connected to each other by a third connection metal layer 6Cb. and a fifth strip-shaped metal layer 4cc and a sixth strip-shaped metal layer 4cd. The fifth strip-shaped metal layer 4cc overlaps the other first strip-shaped metal layer 4ba of the pair of first strip-shaped metal layers 4ba in plan view, and the sixth strip-shaped metal layer 4cd overlaps the pair of second strip-shaped metal layers 4bb. It overlaps with the other first strip-shaped metal layer 4ba of them in plan view.

The first end of the first strip-shaped metal layer 4ba on the second common metal layer 4Bc side is a predetermined distance from the second ends of the third strip-shaped metal layer 4cb and the fifth strip-shaped metal layer 4cc on the second common metal layer 4Bc side. The first end of the second strip-shaped metal layer 4bb on the side of the first common metal layer 4Ac is located on the side of the second common metal layer 4Bc by the first end of the fourth strip-shaped metal layer 4ca and the first end of the sixth strip-shaped metal layer 4cd. It is located on the first common metal layer 4Ac side by a predetermined distance from the second end on the common metal layer 4Ac side.

According to such a configuration, even if the dielectric breakdown of the first dielectric film 114 occurs, the first connection metal layer 6Bb1 scatters and the gap between the fourth strip-shaped metal layer 4ca and the first common metal layer 4Ac is broken. The connection is interrupted, the second connection metal layer 6Bb2 scatters, the connection between the third strip-shaped metal layer 4cb and the second common metal layer 4Bc is interrupted, the third connection metal layer 6Cb scatters, and the fifth strip-shaped Since the connection between the metal layer 4cc and the sixth strip-like metal layer 4cd is cut off, it is possible to reduce the decrease in capacitance, extend the life of the 4-series film capacitor 204, and make it highly reliable.

FIG. 15 is a top plan view of a third example of the 4-series film capacitor of the third embodiment. The four-series film capacitor 204A includes a first strip-shaped metal layer 4Aa2 electrically connected to the first common metal layer 4Ac by the first connection metal layer 6Ab, and an electrical connection to the second common metal layer 4Bc by the first connection metal layer 6Ab. and a first strip-shaped metal layer 4Aa1 that is physically connected. The 4-series film capacitor 204 is a second strip-shaped metal layer obtained by dividing the pair of second strip-shaped metal layers 4Ba in the 4-series film capacitor 104 (see FIG. 13) of the third embodiment in the first direction (x direction). It comprises layer 4Baa. In the second strip-shaped metal layers 4Baa, a pair of second strip-shaped metal layers 4Baa adjacent to each other in the second direction (y-direction) are electrically connected by a connection metal layer 207. FIG.

The 4-series film capacitor 204A has a third strip-shaped metal layer 4Caa in which the third strip-shaped metal layer 4Ca in the 4-series film capacitor 104 (see FIG. 13) of the third embodiment is divided in the first direction (x direction). It has The second strip-shaped metal layer 4Baa and the first strip-shaped metal layers 4Aa1 and 4Aa2 overlap the third strip-shaped metal layer 4Caa. According to such a configuration, even if the dielectric breakdown of the first dielectric film occurs, the first connection metal layer 6Ab is scattered and the connection between the first strip-shaped metal layer 4Aa2 and the first common metal layer 4Ac is prevented. is cut off, and the connection between the first strip-shaped metal layer 4Aa1 and the second common metal layer 4Bc is cut off, so that there is little decrease in capacitance, the life of the 4-series film capacitor 204A is extended, and the reliability is high. Is possible.

FIG. 16 is a top plan view of a fourth example of the 4-series film capacitor of the third embodiment. Parts corresponding to those in the embodiment of FIG. 15 are given the same reference numerals. In the 4-series film capacitor 204B of this embodiment, the third strip-shaped metal layer 4Caa is divided into four third strip-shaped metal layers 4Caa1, 4Caa2, 4Caa3, 4Caa4. The third strip-shaped metal layer 4Caa1 and the third strip-shaped metal layer 4Caa2 are connected by a connection wiring 214, and the third strip-shaped metal layer 4Caa3 and the third strip-shaped metal layer 4Caa4 are connected by a connection wiring 215. The first strip-shaped metal layer 4Aa2 is directly connected to the first common metal layer 4Ac. The first strip-shaped metal layer 4Aa1 is directly connected to the second common metal layer 4Bc. A first strip-shaped metal layer 4Aa1 overlaps each third strip-shaped metal layer 4Caa1. The third strip-shaped metal layers 4Caa2 and 4Caa3 are overlapped with the second strip-shaped metal layers 4Baa. A first strip-shaped metal layer 4Aa2 overlaps each third strip-shaped metal layer 4Caa4.

According to such a configuration, even if the dielectric breakdown of the first dielectric film occurs, the

connection wirings

214 and 215 are scattered, and the connection between the third strip-shaped metal layers 4Caa1 and 4Caa2 is cut off. Since the connection between the third strip-shaped metal layers 4Caa3 and 4Caa4 is cut off, the capacity decrease is small, and the 4-series film capacitor 204B can have a long life and high reliability.

FIG. 17 is a top plan view of the fifth example of the 4-series film capacitor of the third embodiment. 15 and 16 are denoted by the same reference numerals. The four-series film capacitor 204C of this embodiment includes two first strip-shaped metal layers 4Aa1, 4Aa3, four second strip-shaped metal layers 4Baa1, 4Baa2, 4Baa3, 4Baa4, two first strip-shaped metal layers 4Aa2, 4Aa4, and 4Aa4. It comprises three third strip-shaped metal layers 4Caa1, 4Caa2, 4Caa3, 4Caa4. The two first strip-shaped metal layers 4Aa1 and 4Aa3 are connected by a connection wiring 216, and the two first strip-shaped metal layers 4Aa2 and 4Aa4 are connected by a connection wiring 217. FIG. The first strip-shaped metal layer 4Aa2 is directly connected to the first common metal layer 4Ac. The first strip-shaped metal layer 4Aa3 is directly connected to the second common metal layer 4Bc. The second strip-shaped metal layers 4Baa1 and 4Baa2 are electrically connected by a connection metal layer 207. As shown in FIG. The second strip-shaped metal layers 4Baa3 and 4Baa4 are electrically connected by a connection metal layer 207. FIG.

The first strip-shaped metal layer 4Aa1 and the second strip-shaped metal layer 4Baa1 overlap the third strip-shaped metal layer 4Caa1. The second strip-shaped metal layer 4Baa2 and the first strip-shaped metal layer 4Aa2 overlap the third strip-shaped metal layer 4Caa2. The first strip-shaped metal layer 4Aa3 and the second strip-shaped metal layer 4Baa3 overlap the third strip-shaped metal layer 4Caa3. The second strip-shaped metal layer 4Baa4 and the first strip-shaped metal layer 4Aa4 overlap the third strip-shaped metal layer 4Caa4. According to such a configuration, even if the dielectric breakdown occurs in the first dielectric film, the connection wiring 217 scatters and the connection between the first strip-shaped metal layer 4Aa4 and the first common metal layer 4Ac is cut off. , the connection wiring 216 is scattered and the connection between the first strip-shaped metal layer 4Aa1 and the second common metal layer 4Bc is cut off, so that the capacity decrease is small, the life of the 4-series film capacitor 204C is extended, and the reliability is high. It is possible to have

FIG. 18 is a top plan view of the sixth example of the 4-series film capacitor of the third embodiment. 15 to 17 are denoted by the same reference numerals. 4Baa3, 4Baa4; 4Baa5, 4Baa6; and six third strip-shaped metal layers 4Caa1. , 4Caa2, 4Caa3, 4Caa4, 4Caa5, 4Caa6. The first strip-shaped metal layer 4Aa1 is electrically connected to the first common metal layer 4Ac by a first connection metal layer 6Ab, and the first strip-shaped metal layer 4Aa2 is electrically connected to the second common metal layer 4Ac by another first connection metal layer 6Ab. It is electrically connected to layer 4Bc. Each pair of 4Baa1, 4Baa2; 4Baa3, 4Baa4;

A third strip-shaped metal layer 4Caa1 overlaps the second strip-shaped metal layer 4Baa1 and the first strip-shaped metal layer 4Aa1, and a third strip-shaped metal layer 4Caa2 overlaps the second strip-shaped metal layer 4Baa2 and the first strip-shaped metal layer 4Aa1. A third strip-shaped metal layer 4Caa3 overlaps the strip-shaped metal layer 4Baa3 and the first strip-shaped metal layer 4Aa1. A third strip-shaped metal layer 4Caa4 overlaps the second strip-shaped metal layer 4Baa4 and the first strip-shaped metal layer 4Aa2, a third strip-shaped metal layer 4Caa5 overlaps the second strip-shaped metal layer 4Baa5 and the first strip-shaped metal layer 4Aa2, A third strip-shaped metal layer 4Caa6 overlaps the strip-shaped metal layer 4Baa6 and the first strip-shaped metal layer 4Aa2.

According to such a configuration, even if the dielectric breakdown of the first dielectric film occurs, the first connection metal layer 6Ab is scattered and the connection between the first strip-shaped metal layer 4Aa1 and the first common metal layer 4Ac is prevented. is cut off, the first connection metal layer 6Ab is scattered, and the connection between the first strip-shaped metal layer 4Aa2 and the second common metal layer 4Bc is cut off. It is possible to make it more flexible and highly reliable.

FIG. 19 is a top plan view of the seventh example of the 4-series film capacitor of the third embodiment. note that. Parts corresponding to the embodiment of FIG. 18 are given the same reference numerals. 4Baa3, 4Baa4; 4Baa5, 4Baa6; and 12 third strip-shaped metal layers 4Caa1. 4Caa3, 4Caa4; 4Caa5, 4Caa6; 4Caa7, 4Caa8; 4Caa9, 4Caa10; 4Caa5, 4Caa6; 4Caa7, 4Caa8; 4Caa9, 4Caa10; The third strip-shaped metal layers are connected to form each pair. The first strip-shaped metal layer 4Aa1 is directly connected to the first common metal layer 4Ac, and the first strip-shaped metal layer 4Aa2 is directly connected to the second common metal layer 4Bc.

The third strip-shaped metal layers 4Caa1, 4Caa3, and 4Caa5 overlap the first strip-shaped metal layer 4Aa1 connected to the first common metal layer 4Ac. The second strip-shaped metal layer 4Baa1 is overlaid with the third strip-shaped metal layer 4Caa2, the second strip-shaped metal layer 4Baa2 is overlaid with the third strip-shaped metal layer 4Caa4, and the second strip-shaped metal layer 4Baa3 is overlaid with the third strip-shaped metal layer 4Caa6. A third strip-shaped metal layer 4Caa7 overlaps the second strip-shaped metal layer 4Baa4. A third strip-shaped metal layer 4Caa9 overlaps the second strip-shaped metal layer 4Baa5. The third strip-shaped metal layer 4Caa11 overlaps the second strip-shaped metal layer 4Baa6. The third strip-shaped metal layers 4Caa8, 4Caa10, 4Caa12 overlap the first strip-shaped metal layer 4Aa2 connected to the second common metal layer 4Bc.

According to such a configuration, even if the dielectric breakdown of the first dielectric film occurs, the seventh connection metal layer 6Ce scatters and the third belt-like metal layers 4Caa1, 4Caa2; 4Caa5, 4Caa6; 4Caa7, 4Caa8; 4Caa9, 4Caa10;

FIG. 20 is a top plan view of the eighth example of the 4-series film capacitor of the third embodiment. note that. Parts corresponding to the embodiment of FIG. 18 are given the same reference numerals. 4Aa4, 4Aa5, 4Aa6, six second strip-shaped metal layers 4Baa1, 4Baa2; 4Baa3, 4Baa4; 4Baa5, 4Baa6; It comprises six third strip-shaped metal layers 4Caa1, 4Caa2, 4Caa3, 4Caa4, 4Caa5, 4Caa6. The first strip-shaped metal layers 4Aa1, 4Aa2, 4Aa3; 4Aa4, 4Aa5, 4Aa6 adjacent in the second direction (y-direction) are connected to each other by a seventh connection metal layer 6Ce. The first strip-shaped metal layer 4Aa1 is directly connected to the first common metal layer 4Ac, and the first strip-shaped metal layer 4Aa6 is directly connected to the second common metal layer 4Bc.

The third strip-shaped metal layer 4Caa1 overlaps the first strip-shaped metal layer 4Aa1 and the second strip-shaped metal layer 4Baa1. A third strip-shaped metal layer 4Caa2 overlaps the first strip-shaped metal layer 4Aa2 and the second strip-shaped metal layer 4Baa2. A third strip-shaped metal layer 4Caa3 overlaps the first strip-shaped metal layer 4Aa3 and the second strip-shaped metal layer 4Baa3. A third strip-shaped metal layer 4Caa4 overlaps the first strip-shaped metal layer 4Aa4 and the second strip-shaped metal layer 4Baa5. A third strip-shaped metal layer 4Caa5 overlaps the first strip-shaped metal layer 4Aa5 and the second strip-shaped metal layer 4Baa5. A third strip-shaped metal layer 4Caa6 overlaps the first strip-shaped metal layer 4Aa6 and the second strip-shaped metal layer 4Baa6.

According to such a configuration, even if the dielectric breakdown occurs in the first dielectric film, the seventh connection metal layer 6Ce scatters and the first strip-shaped metal layers 4Aa1, 4Aa2, 4Aa3; The connection between each is cut off, so that the four-series film capacitor 204F can have a long life and high reliability.

FIG. 21 is a top plan view of the first example of the 5-series film capacitor of the fourth embodiment. The five-series film capacitor 105 includes a body portion 45 in which the first dielectric film 15 and the second dielectric film 25 are laminated. The body portion 45 is provided with a first metal electrode and a second metal electrode (not shown). The first dielectric film 15 has a first metal layer 35 disposed on one surface thereof, and the first metal layer 35 extends along a first edge of the one surface in a first direction and in a second direction orthogonal to the first direction. has a first common metal layer 5Ac provided along the direction of . The second dielectric film 25 has a second metal layer 85 disposed on one surface thereof, and the second metal layer 85 extends along a second edge portion of one surface in the first direction in a second direction orthogonal to the first direction. has a second common metal layer 5Bc provided along the direction of . A first metal electrode and a second metal electrode (not shown) are respectively formed on a pair of end surfaces of the body portion 45 in the first direction and electrically connected to the first metal layer 35 and the second metal layer 85 . .

The first metal layer 35 includes a first strip-shaped metal layer 5Aa and a second strip-shaped metal layer 5Ba. The first strip-shaped metal layer 5Aa is electrically connected to the first common metal layer 5Ac by the first connection metal layer 6Ab. The second metal layer 85 includes a third strip-shaped metal layer 5Ca and a fourth strip-shaped metal layer 5Da. The third strip-shaped metal layer 5Ca is electrically connected to the second common metal layer 5Bc by the second connection metal layer 6Bb. The first strip-shaped metal layer 5Aa, the second strip-shaped metal layer 5Ba, the third strip-shaped metal layer 5Ca and the fourth strip-shaped metal layer 5Da are shown in FIG. It corresponds to the strip-shaped metal layer 3Ba, the third strip-shaped metal layer 3Ca and the fourth strip-shaped metal layer 3Da. The 5-series film capacitor 105 and the 3-series film capacitor 103 are different in that the 5-series film capacitor 105 has more second strip-shaped metal layers 5Ba and fourth strip-shaped metal layers 3Da than the 3-series film capacitor 103. However, the other points are similarly configured.

According to such a configuration, even if the dielectric breakdown of the first dielectric film 15 occurs, the first connection metal layer 6Ab scatters, resulting in the separation between the first strip-shaped metal layer 5Aa and the first common metal layer 4Ac. The connection is cut off, the second connection metal layer 6Bb is scattered, and the connection between the third strip-shaped metal layer 5Ca and the second common metal layer 5Bc is cut off. It is possible to extend the life and have high reliability.

FIG. 22 is a top plan view of a second example of the 5-series film capacitor of the fourth embodiment. The five-series film capacitor 205 comprises a first strip-shaped metal layer 5Aa electrically connected to a first common metal layer 5Ac by a first connection metal layer 6Ab. The 5-series film capacitor 205 is formed by dividing the pair of second strip-shaped metal layers 5Ba in the 5-series film capacitor 105 (see FIG. 19) of the third embodiment into the first direction (x direction). It has four second strip-shaped metal layers 5Baa1, 5Baa2, 5Baa3, 5Baa4. The second strip-shaped metal layers 5Baa1 and 5Baa2 are electrically connected by a connection metal layer 207. As shown in FIG. The second strip-shaped metal layers 5Baa3 and 5Baa4 are electrically connected by a connection metal layer 207. As shown in FIG. In the second strip-shaped metal layers 5Baa1 to 5Baa4, a pair of second strip-shaped metal layers 5Baa2 and 5Baa3 adjacent in the second direction (y direction) and a pair of second strip-shaped metal layers 5bb2 and 5bb3 are electrically insulated. It is

In the 5-series film capacitor 205, the third strip-shaped metal layer 5Ca in the 5-series film capacitor 105 (see FIG. 19) of the third embodiment is further divided in the first direction (x direction) to form two third strip-shaped metal strips. Layers 5Caa1 and 5Caa2 are provided. A second strip-shaped metal layer 5Baa1 overlaps each of the third strip-shaped metal layers 5Caa1 and 5Caa2, and each of the third strip-shaped metal layers 5Caa1 and 5Caa2 is electrically connected to the second common metal layer 5Bc by a second connection metal layer 6Bb. . In the 5-series film capacitor 205, the fourth strip-shaped metal layer 5Da in the 5-series film capacitor 105 (see FIG. 7) of the third embodiment is further divided in the first direction (x direction) to form the fourth strip-shaped metal layer 5 Daa1 and 5 Daa2. The second strip-shaped metal layers 5Baa2 and 5Baa3 overlap each of the fourth strip-shaped metal layers 5Daa1. Each fourth strip-shaped metal layer 5Daa2 is overlaid with a second strip-shaped metal layer 5Daa4 and a first strip-shaped metal layer 5Aa.

According to such a configuration, even if the dielectric breakdown of the first dielectric film occurs, the first connection metal layer 6Ab is scattered and the connection between the first strip-shaped metal layer 5Aa and the first common metal layer 4Ac is prevented. is cut off, the second connection metal layer 6Bb scatters, and the connection between the third strip-shaped metal layers 5Caa1, 5Caa2 and the second common metal layer 4Bc is cut off. It is possible to extend the life and have high reliability.

FIG. 23 is a top plan view of the first example of the 6-series film capacitor of the fifth embodiment. By configuring the first dielectric film 16 and the second dielectric film 26 as shown in FIG. can do.

Like the 4-series film capacitor 104, the 6-series film capacitor 106 includes a main body portion 46 in which the first dielectric film 16 and the second dielectric film 26 are laminated, and a non-illustrated third dielectric film capacitor provided in the main body portion 46. It includes a first metal electrode 56A and a second metal electrode 56B. The 6-series film capacitor 106 differs from the 4-series film capacitor 104 in the number of the second strip-shaped metal layers 6Ba and the third strip-shaped metal layers 6Ca.

The first dielectric film 16 has a first metal layer 36 disposed on one surface, and the first metal layer 36 is formed on the first edge in the first direction on one surface and on the second edge in the first direction on the one surface. The edge has a first common metal layer 6Ac and a second common metal layer 6Bc provided along a second direction orthogonal to the first direction. A second metal layer 86 is disposed on one surface of the second dielectric film 26 . A first metal electrode and a second metal electrode (not shown) are respectively formed on a pair of end surfaces of the body portion 46 in the first direction and electrically connected to the first metal layer 36 and the second metal layer 86. .

The first metal layer 36 extends in the first direction toward the second common metal layer 6Bc while being electrically connected to the first common metal layer 6Ac by the first connection metal layer 6Ab, or extends toward the second common metal layer 6Bc along the first direction. A plurality of first strip-shaped metal layers 6Aa extending along the first direction toward the first common metal layer 4Ac while being electrically connected to the common metal layer 4Bc by the first connection metal layer 6Ab; Two second band-like members electrically connected to each other and extend in the first direction toward the second common metal layer 4Bc while being electrically insulated from the metal layer 6Ac and the second common metal layer 6Bc. and a metal layer 6Ba.

The second metal layer 86 overlaps the first strip-shaped metal layer 6Aa or the second strip-shaped metal layer 6Ba in a plan view while being electrically insulated from the first common metal layer 6Ac and the second common metal layer 6Bc. It has two third strip-shaped metal layers 6Ca. The first end of the third strip-shaped metal layer 6Ca on the second common metal layer 4Bc side is separated from the second ends of the first strip-shaped metal layer 4Aa and the second strip-shaped metal layer 4Ba on the second common metal layer 4Bc side by a predetermined distance. It is positioned on the second common metal layer 4Bc side.

According to such a configuration, even if the dielectric breakdown of the first dielectric film 16 occurs, the first connection metal layer 6Ab is scattered, and the gap between the first strip-shaped metal layer 6Aa and the first common metal layer 4Ac is prevented. Since the connection is cut off, there is little decrease in capacity, and the 6-series film capacitor 106 can be made to have a long life and high reliability.

FIG. 24 is a top plan view of the second example of the 6-series film capacitor 206 of the fifth embodiment. The 6-series film capacitor 206 has a first metal layer 145 disposed on one side, and the first metal layer 145 is provided on the first edge of one side in the first direction along the second direction. A first dielectric film 124 having a first common metal layer 6Ac and a second common metal layer 6Bc provided along the second direction on the second edge of one surface, and a second metal layer on one surface. The second dielectric film 125 on which the layer 94 is arranged is laminated, and a main body part 160 laminated so that a part of the first metal layer 145 and a part of the second metal layer 94 overlap in plan view. have

The 6-series film capacitor 206 is further formed on each of a pair of end faces in the first direction of the main body portion 160, and is electrically connected to the first metal layer 145 and the second metal layer 94 as first metal electrodes (not shown). and a second metal electrode.

The first metal layer 145 is electrically connected to the first common metal layer 6Ac and electrically connected to the first strip-shaped metal layer 6bc extending toward the second common metal layer 6Bc and the second common metal layer 6Bc. and a second strip-shaped metal layer 6bd extending toward the first common metal layer 6Ac in a connected state. The first metal layer 145 is further electrically connected to a pair of third strip-shaped metal layers 6ba extending toward the first common metal layer 6Ac, and is electrically connected to the second common metal layer 6ba. and a pair of fourth strip-shaped metal layers 6bb extending toward the metal layer 6Bc.

The second metal layer 94 is electrically insulated from the first common metal layer 6Ac and the second common metal layer 6Bc, and is one of the first strip-shaped metal layer 6bc and the pair of fourth strip-shaped metal layers 6bb. The second strip-shaped metal layer 6bd is electrically insulated from the fifth strip-shaped metal layer 6cc, which overlaps the fourth strip-shaped metal layer 6bb in plan view, and the first common metal layer 6Ac and the second common metal layer 6Bc. a sixth strip-shaped metal layer 6cd overlapping one third strip-shaped metal layer 6ba of the pair of third strip-shaped metal layers 6ba in plan view; It has a seventh strip-shaped metal layer 6ca and a fifth strip-shaped metal layer 6cc which are electrically insulated and electrically connected to each other by a third connection metal layer 6Cb. The seventh strip-shaped metal layer 6ca overlaps the other third strip-shaped metal layer 6ba of the pair of third strip-shaped metal layers 6ba in plan view, and the fifth strip-shaped metal layer 6cb overlaps the pair of fourth strip-shaped metal layers 6bb. It overlaps with the other fourth strip-shaped metal layer 6bb in plan view.

The first ends of the second strip-shaped metal layer 6bd and the third strip-shaped metal layer 6ba on the second common metal layer 6Bc side are the first ends of the sixth strip-shaped metal layer 6cd and the seventh strip-shaped metal layer 6ca on the second common metal layer 6Bc side. The first ends of the first strip-shaped metal layer 6bc and the fourth strip-shaped metal layer 6bb on the side of the first common metal layer 6Ac are located on the second common metal layer 6Bc side by a predetermined distance from the two ends. It is positioned on the first common metal layer 6Ac side by a predetermined distance from the second ends of the strip-shaped metal layer 6cb and the fifth strip-shaped metal layer 6cb on the first common metal layer 6Ac side.

According to such a configuration, even if the dielectric breakdown of the first dielectric film 124 occurs, the first connection metal layer 6Ab scatters and the first strip-like metal layer 6bc and the first common metal layer 6Ac are separated from each other. The connection is cut off, the connection between the second strip-shaped metal layer 6bd and the second common metal layer 6Bc is cut off, the third connection metal layer 6Cb is scattered, and the gap between the seventh strip-shaped metal layer 6ca and the fifth strip-shaped metal layer 6cb is cut off. is interrupted, the capacity decrease is small, and the 6-series film capacitor 206 can be made to have a long life and high reliability.

FIG. 25 is a top plan view of the third example of the 6-series film capacitor of the fifth embodiment. As shown in FIG. 25, the 6-series film capacitor 206A includes three third strip-shaped metal layers 6Caa, 6Daa1, 6Daa2 electrically insulated from each other. One first strip-shaped metal layer 6Aa of the pair of first strip-shaped metal layers 6Aa is electrically connected to the first common metal layer 6Ac through one first connection metal layer 6Ab. The other first strip-shaped metal layer 6Aa of the pair of first strip-shaped metal layers 6Aa is electrically connected to the second common metal layer 6Bc through the other first connection metal layer 6Ab. The other first strip-shaped metal layer 6Aa and a pair of third strip-shaped metal layers 6Caa overlap each other, and a pair of second strip-shaped metal layers 6Baa1 and a pair of third strip-shaped metal layers 6Caa adjacent in the x direction overlap each other to form a pair of third strip-shaped metal layers 6Aa and 6Caa. A pair of second strip-shaped metal layers 6Baa2 and a pair of third strip-shaped metal layers 6Daa1 overlap, a pair of second strip-shaped metal layers 6Baa3 and a pair of third strip-shaped metal layers 6Caa overlap, a pair of second strip-shaped metal layers 6Baa4 and a pair of The third strip-shaped metal layer 6Daa2 overlaps, and one first strip-shaped metal layer 6Aa and the pair of third strip-shaped metal layers 6Daa2 overlap.

According to such a configuration, even if the dielectric breakdown of the first dielectric film occurs, the first connection metal layer 6Ab is scattered and the connection between the first strip-shaped metal layer 6Aa and the first common metal layer 6Ac is prevented. is cut off, and the connection between the first strip-shaped metal layer 6Aa and the second common metal layer 6Bc is cut off, so that there is little decrease in capacitance, and the 6-series film capacitor 206A has a long life and high reliability. is possible.

In this way, by dividing one row of capacitor elements into multiple rows and increasing the number of cells of the capacitor elements, a high capacitance can be obtained without increasing the size of the capacitor elements. As a result, even when insulation deterioration or breakdown occurs in a specific capacitor element, a decrease in capacitance can be suppressed.

FIG. 26 is a top plan view of the 8-series film capacitor 208 of the sixth embodiment. The 8-series film capacitor 208 has a first dielectric film 134 with a first metal layer 155 disposed on one side and a second metal layer 94 disposed on one side, the second metal layer 94 being the first metal layer 155 on one side. A first common metal layer 8Ac provided along the second direction on the first edge in the direction of , and a second common metal layer 8Ac provided along the second direction on the second edge of one surface. and a second dielectric film 115 having a metal layer 8Bc, and a body portion 165 laminated so that a portion of the first metal layer 155 and a portion of the second metal layer 94 overlap in plan view. have

The 8-series film capacitor 208 is further formed on each of a pair of end surfaces of the body portion 165 in the first direction, and a first metal electrode (not shown) electrically connected to the first metal layer 155 and the second metal layer 94 . and a second metal electrode.

The first metal layer 155 is electrically connected to a pair of first strip-shaped metal layers 8ba extending toward the first common metal layer 8Ac, and is electrically connected to the second common metal layer 8ba. and a pair of second strip-shaped metal layers 8bb extending toward the layer 8Bc. The pair of first strip-shaped metal layers 8ba and the pair of second strip-shaped metal layers 8bb are electrically insulated from the first common metal layer 8Ac and the second common metal layer 8Bc. The first metal layer 155 has two pairs of first strip-shaped metal layers 8ba and two pairs of second strip-shaped metal layers 8bb along the second direction.

The second metal layer 94 is electrically connected to the second common metal layer 8Bc by the second connection metal layer 6Bb2, and is connected to one pair of the first strip-shaped metal layers 8ba of the two pairs of the first strip-shaped metal layers 8ba. In a state of being electrically connected to the third strip-shaped metal layer 8cc overlapping one of the first strip-shaped metal layers 8ba of the metal layer 8ba in plan view and the first common metal layer 8Ac by the first connection metal layer 6Bb1, 2 A fourth strip-shaped metal layer 8dd that overlaps one of the pair of second strip-shaped metal layers 8bb in plan view with one of the second strip-shaped metal layers 8bb of the pair of second strip-shaped metal layers 8bb, and a first common metal It has a fifth strip-shaped metal layer 8ee and a sixth strip-shaped metal layer 8ff electrically insulated from the layer 8Ac and the second common metal layer 8Bc and electrically connected to each other by a third connection metal layer 6Cb. The fifth strip-shaped metal layer 8ee overlaps the other first strip-shaped metal layer 8ba of the other pair of first strip-shaped metal layers 8ba, and the sixth strip-shaped metal layer 8ff overlaps the other pair of second strip-shaped metal layers 8bb. overlaps the other second strip-shaped metal layer 8bb of the two in plan view. The second metal layer 94 further includes the other first strip-shaped metal layer 8ba of the pair of first strip-shaped metal layers 8ba and the first strip-shaped metal layer 8ba of the other pair of first strip-shaped metal layers 8ba. A seventh strip-shaped metal layer 8gg which overlaps with the layer 8ba in plan view, the other second strip-shaped metal layer 8bb of one pair of second strip-shaped metal layers 8bb, and the other pair of second strip-shaped metal layers 8bb It has an eighth strip-shaped metal layer 8hh that overlaps with one of the second strip-shaped metal layers 8bb in plan view.

The first end of the first strip-shaped metal layer 8ba on the second common metal layer 8Bc side is the third strip-shaped metal layer 8cc, the fifth strip-shaped metal layer 8ee, and the seventh strip-shaped metal layer 8gg of the second common metal layer 8Bc side. The first end of the second strip-shaped metal layer 8bb on the side of the first common metal layer 8Ac is located on the side of the second common metal layer 8Bc by a predetermined distance from the two ends. The strip-shaped metal layer 8ff and the eighth strip-shaped metal layer hh are located on the first common metal layer 8Ac side by a predetermined distance from the second ends on the first common metal layer 8Ac side.

According to such a configuration, even if the dielectric breakdown of the first dielectric film 134 occurs, the first connection metal layer 6Bb1 scatters and the gap between the fourth strip-shaped metal layer 8dd and the first common metal layer 8Ac is prevented. The connection is interrupted, the second connection metal layer 6Bb2 is scattered, the connection between the third strip-shaped metal layer 8cc and the second common metal layer 8Bc is interrupted, the third connection metal layer 6Cb is scattered, and the fifth strip-shaped Since the connection between the metal layer 8ee and the sixth strip-shaped metal layer 8ff is cut off, it is possible to reduce the decrease in capacitance, extend the life of the 8-series film capacitor 208, and make it highly reliable.

FIG. 27 is a partially cutaway perspective view showing an embodiment of a film capacitor. Film capacitor A is obtained by covering film capacitor 10 with exterior member 7 in terms of insulation and environmental resistance. The

metallikons

5A and 5B are provided with lead wires 6 for external connection. FIG. 13 shows a state in which a part of the exterior member 7 is removed, and the removed portion of the exterior member 7 is indicated by a broken line.

FIG. 28 is a perspective view schematically showing the configuration of the embodiment of the present disclosure relating to a coupled capacitor. In FIG. 28, the case and the molding resin are omitted in order to make the configuration easier to understand. The coupled capacitor B has a structure in which a plurality of film capacitors A are connected in parallel by a pair of

bus bars

21 and 123 . The

busbars

21 and 123 are composed of

terminal portions

21a and 123a and lead

terminal portions

21b and 123b. The

terminal portions

21a and 123a are for external connection, and the lead

terminal portions

21b and 123b are connected to the

external electrodes

5A and 5B of the film capacitor A, respectively.

FIG. 29 is an electric circuit diagram for explaining the configuration of the embodiment of the present disclosure relating to the inverter. FIG. 29 shows an example of an inverter C that generates alternating current from rectified direct current. The inverter C of this embodiment includes a bridge circuit 31 and a capacitor section 38, as shown in FIG. The bridge circuit 31 is composed of, for example, switching elements such as IGBTs (Insulated Gate Bipolar Transistors) and diodes. The capacitive section 38 is arranged between the input terminals of the bridge circuit 31 and stabilizes the voltage. The inverter C may include the film capacitors 10 and A or the coupled capacitor B as the capacitive section 38 .

The input of this inverter C may be connected to the booster circuit 39 that boosts the voltage of the DC power supply, or may be connected to the DC power supply. On the other hand, the bridge circuit 31 is connected to a motor generator (motor M) as a drive source.

FIG. 30 is a schematic configuration diagram for explaining the configuration of the embodiment of the present disclosure related to an electric vehicle. FIG. 30 shows an example of a hybrid electric vehicle (HEV) as the electric vehicle D. As shown in FIG.

An electric vehicle D in FIG. 30 includes a driving motor 41, an engine 48, a transmission 52, an inverter 47, a power supply (battery) 49, front wheels 51a and rear wheels 51b.

This electric vehicle D has a motor 41, an engine 48, or both as a drive source. The output of the drive source is transmitted to the pair of left and right front wheels 51a via the transmission 52. As shown in FIG. The power supply 49 is connected to the inverter 47 and the inverter 47 is connected to the motor 41 .

Also, the electric vehicle D shown in FIG. 30 includes a vehicle ECU 53 and an engine ECU 57 . The vehicle ECU 53 performs overall control of the electric vehicle D as a whole. The engine ECU 57 drives the electric vehicle D by controlling the rotation speed of the engine 48 . The electric vehicle D further includes driving devices such as an ignition key 55 operated by the driver or the like, an accelerator pedal (not shown), and a brake. The vehicle ECU 53 receives a driving signal according to the operation of the driving device by the driver or the like. The vehicle ECU 53 outputs instruction signals to the engine ECU 57, the power supply 49, and the inverter 47 as a load based on the drive signal. The engine ECU 57 drives the electric vehicle D by controlling the rotation speed of the engine 48 in response to the instruction signal. An inverter C using the film capacitors A and 10 or the coupled capacitor B of the present embodiment as the capacitance section 38 can be mounted on an electric vehicle D as shown in FIG.

It should be noted that the inverter C of this embodiment can be applied not only to the hybrid electric vehicle (HEV) described above, but also to various power conversion application products such as electric vehicles (EV) or electric bicycles, generators, and solar cells.

In addition, the body portion of the film capacitor of the present disclosure may include a body portion wound such that a portion of the first metal layer and a portion of the second metal layer overlap in plan view, or , a body portion laminated such that a portion of the first metal layer and a portion of the second metal layer overlap. The first common metal layer and the second common metal layer may be continuous or discontinuous.

According to the present disclosure, it is possible to provide a highly reliable series capacitor in which non-uniformity in area between cells is less likely to occur and in which non-uniformity in area between cells can be suppressed.

According to the present disclosure, a connected capacitor, an inverter, and an electric vehicle using highly reliable series capacitors can be achieved.

The following embodiments (1) to (6) are possible for the film capacitor according to the present disclosure.

(1) A first metal layer is disposed on one surface, and the first metal layer extends along a second direction perpendicular to the first direction along a first edge of the one surface in a first direction. a first dielectric film having a first common metal layer provided thereon;
A second metal layer is provided on one surface, and the second metal layer is provided on a second edge of the one surface in a first direction along a second direction perpendicular to the first direction. and a second dielectric film having a second common metal layer, wherein a part of the first metal layer and a part of the second metal layer overlap in plan view. Department and
a first metal electrode and a second metal electrode formed on each of a pair of end faces of the main body and electrically connected to the first metal layer and the second metal layer;
The first metal layer is
a first strip-shaped metal layer extending in the first direction toward the second common metal layer while being electrically connected to the first common metal layer;
a second strip-shaped metal layer electrically connected to the first common metal layer and the second common metal layer and extending toward the second common metal layer while being electrically insulated from the first common metal layer and the second common metal layer; ,
The second metal layer is
While electrically connected to the second common metal layer, it extends along the first direction toward the first common metal layer, and in plan view, the first strip-shaped metal layer or the second strip-shaped metal a third strip-shaped metal layer overlying the layer;
In a state electrically insulated from the first common metal layer and the second common metal layer, the first strip-shaped metal layer extends along the first direction toward the second common metal layer and, in plan view, the first strip-shaped metal layer. and a fourth strip-shaped metal layer overlapping two adjacent strip-shaped metal layers among the second strip-shaped metal layers,
The first ends of the third strip-shaped metal layer and the fourth strip-shaped metal layer on the side of the second common metal layer are separated from the second ends of the first strip-shaped metal layer and the second strip-shaped metal layer by a predetermined distance. A film capacitor located on the side of the second common metal layer.

(2) A first metal layer is provided on one surface, and the first metal layer is provided on a first edge of the surface in the first direction and a second edge of the surface in the first direction, a first dielectric film having a first common metal layer and a second common metal layer provided along a second direction orthogonal to the first direction;
a second dielectric film having a second metal layer disposed on one surface thereof; Overlapping main body,
a first metal electrode and a second metal electrode formed on each of a pair of end surfaces of the main body in the first direction and electrically connected to the first metal layer and the second metal layer;
The first metal layer is
While electrically connected to the first common metal layer, it extends along the first direction toward the second common metal layer, or is electrically connected to the second common metal layer. , a plurality of first strip-shaped metal layers extending along the first direction toward the first common metal layer;
A pair of electrically connected second strips extending in a first direction toward the second common metal layer while being electrically insulated from the first common metal layer and the second common metal layer a metal layer;
The second metal layer is
a third strip-shaped metal layer overlapping the first strip-shaped metal layer or the second strip-shaped metal layer in plan view while being electrically insulated from the first common metal layer and the second common metal layer; ,
The first end of the third strip-shaped metal layer on the second common metal layer side is separated from the second ends of the first strip-shaped metal layer and the second strip-shaped metal layer on the second common metal layer side by a predetermined distance. A film capacitor located on the side of the second common metal layer.

(3) The first metal layer has a first connection metal layer that connects the first common metal layer and the first strip-shaped metal layer, and the second metal layer is the second common metal layer. The film capacitor according to (1) above, further comprising a second connection metal layer connecting the layer and the third strip-shaped metal layer.

(4) The above (2), wherein the first metal layer has a third connection metal layer that connects the first strip-shaped metal layer to the first common metal layer or the second common metal layer. A film capacitor as described.

(5) The first connection metal layer is
a first connection wiring directly connected to the first common metal layer and extending in the first direction from the first common metal layer;
a second connection wiring directly connected to the first connection wiring and extending in the second direction from the first connection wiring;
a third connection wiring that is directly connected to the second connection wiring, extends from the second connection wiring in the first direction, and is directly connected to the second strip-shaped metal layer;
The second connection metal layer is
a fourth connection wiring directly connected to the second common metal layer and extending from the second common metal layer in the first direction;
a fifth connection wiring directly connected to the fourth connection wiring and extending in the second direction from the fourth connection wiring;
(3) above, further comprising: a sixth connection wiring that is directly connected to the fifth connection wiring, extends from the fifth connection wiring in the first direction, and is directly connected to the first strip-shaped metal layer; A film capacitor as described.

(6) The first connection metal layer is
a first connection wiring directly connected to the first common metal layer and extending in the first direction from the first common metal layer;
a second connection wiring directly connected to the first connection wiring and extending in the second direction from the first connection wiring;
and a third connection wiring directly connected to the second connection wiring, extending from the second connection wiring in the first direction and directly connected to the second strip-shaped metal layer, according to (4) above. A film capacitor as described.

The following embodiment (7) is possible for the coupled capacitor according to the present disclosure.

(7) comprising a plurality of film capacitors and a bus bar connecting the plurality of film capacitors;
A coupled capacitor, wherein the film capacitor includes the film capacitor according to any one of (1) to (6) above.

The following embodiment (8) is possible for the inverter according to the present disclosure.

(8) comprising a bridge circuit composed of switching elements and a capacitor connected to the bridge circuit,
An inverter, wherein the capacitive section includes the film capacitor according to any one of (1) to (6) above.

The following embodiment (9) is possible for the electric vehicle according to the present disclosure.

(9) a power supply, an inverter connected to the power supply, a motor connected to the inverter, and wheels driven by the motor;
An electric vehicle, wherein the inverter is the inverter according to (8) above.

Although the embodiments of the present disclosure have been described in detail above, the present disclosure is not limited to the above-described embodiments, and various modifications, improvements, etc. can be made without departing from the gist of the present disclosure. It is possible. It goes without saying that all or part of each of the above-described embodiments can be appropriately combined within a non-contradictory range.

13, 14, 15, 16, 114, 124, 134 Dielectric film (first dielectric film)
23, 24, 25, 26, 115, 125 Dielectric film (second dielectric film)
33, 34, 35, 36, 135, 145, 155 metal layer (first metal layer)
3Aa, 4Aa, 5Aa, 6Aa First strip-shaped metal layers 3Ab, 4Ab, 5Ab, 6Ab First connection metal layers 3Ab1, 4Ab1, 5Ab1, 6Ab1 First connection wires 3Ab2, 4Ab2, 5Ab2, 6Ab2 Second connection wires 3Ab3, 4Ab3, 5Ab3, 6Ab3 Third connection wiring 3Ac, 4Ac, 5Ac, 6Ac First common metal layer 3Ba, 4Ba, 5Ba, 6Ba Second strip-shaped metal layer 3Ca, 4Ca, 5Ca, 6Ca Third strip-shaped metal layer 3Da, 5Da, Fourth strip-shaped Metal layers 3Baa, 4Baa, 5Baa, 6Baa Second strip-shaped metal layers 3Caa, 4Caa, 5Caa, 6Caa Third strip-shaped metal layers 3Daa, 5Daa Fourth strip-shaped metal layers 3Bb, 4Bb, 5Bb, 6Bb Second connection metal layers 3Bb1, 4Bb1, 5Bb1, 6Bb1 Fourth connection wiring 3Bb2, 4Bb2, 5Bb2, 6Bb2 Fifth connection wiring 3Bb3, 4Bb3, 5Bb3, 6Bb3 Sixth connection wiring 3Bc, 4Bc, 5Bc, 6Bc Second

common metal layer

43, 44, 45, 46 Body part 53A, 54A, 55A, 56A metallikon (first metal electrode)
53B, 54B, 55B, 56B metallikon (second metal electrode)
6 lead wire 7

exterior member

83, 84, 85, 86, 94 metal layer (second metal layer)
103, 203, 203A, 203B, 203C, 203D, 203E 3

series film capacitors

104, 204, 204A, 204B, 204B, 204C, 204D, 204E, 204F 4

series film capacitors

105, 205 5

series film capacitors

106, 206, 206A 6 Series Film Capacitor 208 8

Series Film Capacitor

21, 23 Bus Bar 21a, 23a Terminal Section 21b, 23b Extraction Terminal Section 31 Bridge Circuit 38 Capacitance Section 39 Booster Circuit 41 Motor 48 Engine 52 Transmission 47 Inverter 49 Power Supply

51a Front Wheel

51b Rear Wheel 53 Vehicle ECU
55 Ignition key 57 Engine ECU
71 Intermediate portion 72 Long side 73 Short side A Film capacitor B Concatenated capacitor C Inverter D Electric vehicle M Motor

Claims

A first metal layer is provided on one surface, and the first metal layer is provided on a first edge of the one surface in a first direction along a second direction perpendicular to the first direction. a first dielectric film having a first common metal layer;
A second metal layer is provided on one surface, and the second metal layer is provided on a second edge of the one surface in a first direction along a second direction perpendicular to the first direction. and a second dielectric film having a second common metal layer, wherein a part of the first metal layer and a part of the second metal layer overlap in plan view. Department and
a first metal electrode and a second metal electrode formed on each of a pair of end faces of the main body and electrically connected to the first metal layer and the second metal layer;
The first metal layer is
a first strip-shaped metal layer extending in the first direction toward the second common metal layer while being electrically connected to the first common metal layer;
a second strip-shaped metal layer electrically connected to the first common metal layer and the second common metal layer and extending toward the second common metal layer while being electrically insulated from the first common metal layer and the second common metal layer; ,
The second metal layer is
While electrically connected to the second common metal layer, it extends along the first direction toward the first common metal layer, and in plan view, the first strip-shaped metal layer or the second strip-shaped metal a third strip-shaped metal layer overlying the layer;
In a state electrically insulated from the first common metal layer and the second common metal layer, the first strip-shaped metal layer extends along the first direction toward the second common metal layer and, in plan view, the first strip-shaped metal layer. and a fourth strip-shaped metal layer overlapping two adjacent strip-shaped metal layers among the second strip-shaped metal layers,
The first ends of the third strip-shaped metal layer and the fourth strip-shaped metal layer on the side of the second common metal layer are separated from the second ends of the first strip-shaped metal layer and the second strip-shaped metal layer by a predetermined distance. A film capacitor located on the side of the second common metal layer.
A first metal layer is disposed on one surface, and the first metal layer is disposed on a first edge of the one surface in the first direction and a second edge of the one surface in the first direction. a first dielectric film having a first common metal layer and a second common metal layer provided along a second direction orthogonal to the direction of
a second dielectric film having a second metal layer disposed on one surface thereof; Overlapping main body,
a first metal electrode and a second metal electrode formed on each of a pair of end surfaces of the main body in the first direction and electrically connected to the first metal layer and the second metal layer;
The first metal layer is
While electrically connected to the first common metal layer, it extends along the first direction toward the second common metal layer, or is electrically connected to the second common metal layer. , a plurality of first strip-shaped metal layers extending along the first direction toward the first common metal layer;
A pair of electrically connected second strips extending in a first direction toward the second common metal layer while being electrically insulated from the first common metal layer and the second common metal layer a metal layer;
The second metal layer is
a third strip-shaped metal layer overlapping the first strip-shaped metal layer or the second strip-shaped metal layer in plan view while being electrically insulated from the first common metal layer and the second common metal layer; ,
The first end of the third strip-shaped metal layer on the second common metal layer side is separated from the second ends of the first strip-shaped metal layer and the second strip-shaped metal layer on the second common metal layer side by a predetermined distance. A film capacitor located on the side of the second common metal layer.
The first metal layer has a first connection metal layer that connects the first common metal layer and the first strip-shaped metal layer, and the second metal layer has the second common metal layer and the 2. A film capacitor according to claim 1, further comprising a second connecting metal layer connecting with the third strip-shaped metal layer.
3. The film capacitor according to claim 2, wherein said first metal layer has a third connection metal layer connecting said first strip-shaped metal layer to said first common metal layer or said second common metal layer. .
The first connection metal layer is
a first connection wiring directly connected to the first common metal layer and extending in the first direction from the first common metal layer;
a second connection wiring directly connected to the first connection wiring and extending in the second direction from the first connection wiring;
a third connection wiring that is directly connected to the second connection wiring, extends from the second connection wiring in the first direction, and is directly connected to the second strip-shaped metal layer;
The second connection metal layer is
a fourth connection wiring directly connected to the second common metal layer and extending from the second common metal layer in the first direction;
a fifth connection wiring directly connected to the fourth connection wiring and extending in the second direction from the fourth connection wiring;
4. The sixth connection wiring according to claim 3, further comprising a sixth connection wiring that is directly connected to the fifth connection wiring, extends from the fifth connection wiring in the first direction, and is directly connected to the first strip-shaped metal layer. of film capacitors.
The first connection metal layer is
a first connection wiring directly connected to the first common metal layer and extending in the first direction from the first common metal layer;
a second connection wiring directly connected to the first connection wiring and extending in the second direction from the first connection wiring;
5. The third connection wiring according to claim 4, further comprising a third connection wiring directly connected to the second connection wiring, extending from the second connection wiring in the first direction, and directly connected to the second strip-shaped metal layer. of film capacitors.
comprising a plurality of film capacitors and a bus bar connecting the plurality of film capacitors,
A coupled capacitor, wherein the film capacitor comprises the film capacitor according to any one of claims 1-6.
comprising a bridge circuit composed of switching elements and a capacitor connected to the bridge circuit,
An inverter, wherein the capacitive section includes the film capacitor according to any one of claims 1 to 6.
A power supply, an inverter connected to the power supply, a motor connected to the inverter, and wheels driven by the motor,
An electric vehicle, wherein the inverter is the inverter according to claim 8 .