JP4479380B2 - CONNECTION BODY, ELECTRONIC COMPONENT CONNECTION STRUCTURE, AND ELECTRONIC COMPONENT DEVICE - Google Patents

Description

The present invention relates to connection of electronic components such as a plurality of electrolytic capacitors, and more particularly to a connection body with reduced inductance, an electronic component connection structure, and an electronic component device.

  In a capacitor device used for power conversion of DC power to AC power, etc., a parallel circuit or a series-parallel circuit of a plurality of capacitors is used. At that time, an inductance generated at a connection portion on the capacitor side becomes a problem. This inductance is formed from a large current flowing through the connection portion and a magnetic field generated by the current, and various countermeasures have been conventionally taken to reduce such inductance.

The following patent documents exist in the prior art regarding the connection of such a capacitor.
Japanese Utility Model Publication No. 63-89227 JP-A-3-289346 JP-A-3-285570 JP-A-9-205778 JP 2003-319665 A Japanese Patent Laid-Open No. 2000-60145 discloses a configuration in which capacitor rows are arranged opposite to each other by facing the terminal sides, and a plurality of capacitors are paralleled for each capacitor row using a plurality of parallel connection conductors. ing.

  Patent Document 2 discloses a configuration in which three plate-like conductors are stacked and placed in close proximity to each other, and a configuration in which two capacitors are connected in series using the plurality of conductors flows to the terminals of each capacitor. By reversing the direction of the current, the magnetic field generated by each current is canceled and the inductance is reduced.

  Patent Document 3 discloses a configuration in which two conductor plates are stacked and a plurality of capacitors are connected in parallel using these two conductor plates.

  Patent Document 4 discloses a configuration in which two conductor plates are stacked and a plurality of capacitors are connected in parallel using these two conductor plates.

  Patent Document 5 discloses a configuration in which capacitors are connected in parallel between bus bars by stacking two bus bars and connecting them to the terminal side of the capacitor using a connecting portion protruding from each bus bar.

Patent Document 6 discloses a configuration in which a plurality of smoothing capacitors are connected in parallel by connecting a substrate to the terminals of a plurality of smoothing capacitors.

  By the way, it is publicly known to increase the capacity by parallelizing a plurality of electrolytic capacitors, and to realize low inductance by a bus bar. Also, the current flowing through each terminal is reversed to cancel the magnetic field generated by each current. It is also known to reduce inductance by doing so.

  However, in Patent Document 1, the parallel connection body of one capacitor is in the same direction in the direction of current, and is opposite to the parallel connection body of the opposing capacitor, and the inductance is reduced. Since both are in the same direction, the effect of reducing inductance is low. Further, Patent Document 2 merely discloses parallelization of two capacitors. In Patent Documents 3 and 5, although conductors for paralleling capacitors are adjacent to each other, there is an isolated portion in each conductor. Therefore, inductance cannot be reduced in this portion. Moreover, in patent document 4, since a wiring structure is three-dimensional with respect to the capacitor | condenser paralleled, the ratio for the whole apparatus becomes large. Moreover, in patent document 6, the structure of the connection conductor in the board | substrate which parallelizes each capacitor | condenser is unknown.

Accordingly, the present invention provides a connection body, a connection structure for an electronic component, and an electronic component device that realizes a reduction in inductance while reducing the inductance of the connection structure portion while making electronic components such as a plurality of capacitors in series and parallel. For the purpose.

In order to achieve the above object, the connection body of the present invention includes a first and second electronic component group in which the terminal sides of a plurality of electronic components are opposed to each other, and the opposed first and second electronic component groups. a connecting member disposed within the interval used for connection between the first electronic component and the second electronic component group and group terminal, the positive terminal of the electronic components of the first group of electronic components a first bus bar to be connected to a common, the second bus bar that connects the first negative terminal side of the electronic components of the electronic component group in common, the second electronic components of the positive electrode of the electronic component group third bus bar and the fourth bus bar and the second bus bar and the first bus bar connecting the second negative terminal side of the electronic components of the electronic component group on a common connecting the terminal side in common , An insulating member interposed between the third bus bar and the fourth bus bar, 1 bus bar and the fourth bus bar, or a common connection part for connecting the second bus bar and the third bus bar, and the second bus bar and the third bus bar in which the common connection part is not formed Or a connection terminal portion formed on the first bus bar and the fourth bus bar, wherein the first bus bar and the second bus bar, the third bus bar and the fourth bus bar are insulated. The first and fourth bus bars are stacked such that the common connection portion and the connection terminal portion are close to each other, and the current flowing through the first bus bar and the second The direction of the current flowing in the bus bar is set in the opposite direction, the direction of the current flowing in the second bus bar and the direction of the current flowing in the third bus bar are set in the reverse direction, and flows in the third bus bar. Direction of the current flowing through the flow on the fourth bus bar is set configured in the opposite direction.

  With such a configuration, a plurality of electronic components can be serially paralleled by electrical connection between the first to fourth bus bars and the electronic components constituting the first or second electronic component group, Along with downsizing of the connecting structure part, the current flowing through the stacked bus bars is changed between the first bus bar and the second bus bar, between the second bus bar and the third bus bar, and between the third bus bar and the fourth bus bar. Therefore, the inductance can be reduced by canceling out the magnetic field.

  In order to achieve the above object, the first laminated body composed of the first bus bar, the insulating member and the second bus bar, and the third bus bar, the insulating member and the fourth bus bar. A second laminated body, and a connection portion formed on the first bus bar and / or the second bus bar of the first laminated body, and connecting one terminal side of the electronic components of the first electronic component group; A through portion that allows the other terminal side to pass through in a non-contact manner, and a third bus bar and / or a fourth bus bar of the second laminate, and one of the electronic components of the second electronic component group. It is good also as a structure provided with the connection part which connects a terminal side, and the penetration part which lets the other terminal side pass in non-contact.

  In order to achieve the above object, a first connection terminal portion formed integrally with the first bus bar or the second bus bar of the first electronic component group and connected to an external circuit, The insulating member is interposed between the first connecting terminal portion and the third bus bar or the fourth bus bar of the second electronic component group so as to be connected to an external circuit. It is good also as a structure provided with the 2nd connecting terminal part.

  In order to achieve the above object, the electronic component connection structure of the present invention includes a first and second electronic component group in which the terminal sides of a plurality of electronic components are opposed to each other, and first, second, third, and A connection structure for an electronic component comprising a fourth bus bar, wherein a positive terminal side of each electronic component of the first electronic component group is commonly connected to the first bus bar, and the second bus bar is connected to the second bus bar. The negative terminal side of each electronic component of the first electronic component group is commonly connected, the positive terminal side of each electronic component of the second electronic component group is commonly connected to the third bus bar, and the fourth The bus bar is provided with the above-described connection body in which the negative electrode terminal side of each electronic component of the second electronic component group is connected in common.

  With such a configuration, a plurality of electronic components can be serially paralleled by electrical connection between the first to fourth bus bars and the electronic components constituting the first or second electronic component group, A connection structure for an electronic component with a reduced inductance and a reduced inductance can be obtained.

In order to achieve the above object, an electronic component device according to the present invention has a structure in which a connection structure for an electronic component described above is provided in a housing.

  As described above, according to the present invention, the following effects can be obtained.

  (1) According to the connection body of the present invention, a plurality of electronic components are grouped into the first and second electronic component groups, and the electronic components are arranged in parallel for each electronic component group. Since serialization of electronic parts group is realized, connecting conductors for paralleling electronic parts are adjacent to each other, and currents of adjacent bus bars of stacked bus bars are set in opposite directions. In addition, the magnetic fields generated by the respective currents are offset, so that the inductance can be reduced and the connection structure can be made compact.

  (2) According to the electronic component connection structure of the present invention, the electronic device includes the first and second electronic component groups each including a plurality of electronic components, and the parallelization of the electronic components and the first and second electronic component groups. As a result, it is possible to achieve low inductance in paralleling electronic components.

(3) According to the electronic component device of the present invention, parallelization and serialization of a plurality of electronic components can be realized, the connection structure can be simplified and made compact, and low inductance can be achieved.

1st Embodiment This 1st Embodiment is related with the connection body of this invention, the connection structure of an electronic component, and an electronic component apparatus, and shows the connection body regarding a capacitor | condenser, and its connection structure. The first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is an exploded perspective view showing a connection structure of a connection body and a capacitor, FIG. 2 is a perspective view showing the connection body, and FIG. 3 is a perspective view showing a connection structure of the capacitor.

  As an electronic component connection structure, for example, the capacitor connection structure 2 includes the connection body 4 so that the first and second capacitor groups 6 and 8 are serialized as the first and second electronic component groups. The capacitors 61, 62, 63, and 64 that constitute the group 6 are paralleled, and the capacitors 81, 82, 83, and 84 that constitute the capacitor group 8 are parallelized.

  In addition to the first bus bar 41, the second bus bar 42, the third bus bar 43, and the fourth bus bar 44, the connection body 4 includes insulating paper 45 and 46 as insulating members. Each bus bar 41 to 44 is a plate-like member having a width that covers the positive electrode terminal 12 and the negative electrode terminal 14 of the capacitors 61 to 64 and 81 to 84, and is connected to one end of the bus bar 41 on the positive electrode side. The external connection portion 16 as a terminal portion, the external connection portion 18 as a negative connection terminal portion at one end portion of the bus bar 44, and the common connection portion 20 that couples them to one end portions of the bus bars 42 and 43 are formed. Has been. The bus bar 41 is a connection conductor that connects the positive electrodes of the capacitors 61 to 64 in parallel. The bus bar 41 includes a plurality of connection holes 22 and a negative electrode terminal 14 as connection portions that connect the positive terminals 12 of the capacitors 61 to 64 in parallel. A plurality of through-holes 24 are alternately formed as large-diameter through portions for passing through in a non-contact manner. Similarly, the bus bar 42 is a connection conductor that connects the negative electrode sides of the capacitors 61 to 64 in parallel. The bus bar 42 includes a plurality of connection holes 26 and positive electrodes as connection portions that connect the negative electrode terminals 14 of the capacitors 61 to 64 in parallel. A plurality of through holes 28 are alternately formed as large-diameter through portions for allowing the terminals 12 to pass through in a non-contact manner.

  The bus bar 43 is a connection conductor that connects the positive electrode sides of the capacitors 81 to 84 in parallel. The bus bar 43 includes the connection holes 22 and the negative electrode terminals 14 as connection portions that connect the positive electrode terminals 12 of the capacitors 81 to 84 in parallel. A plurality of through-holes 24 are alternately formed as large-diameter through portions for passing through in a non-contact manner. Similarly, the bus bar 44 is a connection conductor that connects the negative electrode sides of the capacitors 81 to 84 in parallel, and includes a plurality of connection holes 26 and positive electrodes as connection portions that connect the negative electrode terminals 14 of the capacitors 81 to 84 in parallel. A plurality of through holes 28 are alternately formed as large-diameter through portions for allowing the terminals 12 to pass through in a non-contact manner.

  The insulating paper 45 is a member that is installed between the bus bars 41 and 42 on the capacitor group 6 side and insulates between the two. The insulating paper 45 is formed wider and longer than the bus bars 41 and 42, and the connection hole 22. , 26 and through holes 30 corresponding to the centers of the through holes 24, 28. Each through hole 30 is smaller in diameter than the through holes 24, 28 for insulation. Similarly, the insulating paper 46 is a member that is installed between the bus bars 43 and 44 on the capacitor group 8 side and insulates the two, and is formed wider and longer than the bus bars 43 and 44, and has a connection hole. 22 and 26 and through holes 30 corresponding to the centers of the through holes 24 and 28 are provided, and each through hole 30 is smaller in diameter than the through holes 24 and 28 for insulation.

  For example, connection screws 32 are used to connect the capacitors 61 to 64 and the bus bars 41 and 42. The connection screws 32 that pass through the through holes 28 of the bus bar 42 and the through holes 30 of the insulating paper 45 are connected to the bus bars. The positive terminal 12 and the bus bar 41 are connected to each other through the connection screw 32 and the spacer 34 by tightening the positive terminal 12 together with the spacer 34 as a mounting height setting or adjusting means that also serves as a washer through the connection hole 22 of 41, Further, the connection screw 32 that penetrates the through hole 24 of the bus bar 41 and the through hole 30 of the insulating paper 45 is fastened to the negative electrode terminal 14 together with the spacer 34 through the connection hole 26 of the bus bar 42, thereby connecting the connection screw 32 and the spacer 34. The negative electrode terminal 14 and the bus bar 42 are connected via each other.

  Further, for example, connection screws 32 are used to connect each of the capacitors 81 to 84 and the bus bars 43 and 44. Similarly, the connection through the through hole 28 of the bus bar 43 and the through hole 30 of the insulating paper 45 is used. By tightening the connecting screw 32 to the negative terminal 14 together with the spacer 34 as a mounting height setting or adjusting means that also serves as a washer through the connection hole 22 of the bus bar 44, the negative terminal 12 and the bus bar 44 are connected via the connecting screw 32 and the spacer 34. Are connected to the positive terminal 12 together with the spacer 34 through the connection hole 26 of the bus bar 43 and the connection screw 32 passing through the through hole 24 of the bus bar 44 and the through hole 30 of the insulating paper 45. The positive terminal 12 and the bus bar 43 are connected via the screw 32 and the spacer 34.

  In this embodiment, the external connection portion 16 of the bus bar 41 is exposed by being bent from the end portion of the bus bar 41 toward the side surface of the capacitor 64, and includes a fixing screw portion 36 at the upper portion of the bent portion. . Further, in this embodiment, the external connection portion 18 of the bus bar 44 is exposed by being bent so as to overlap the external connection portion 16 from the end portion of the bus bar 44, and the fixing screw portion 36 is overlapped with the upper portion of the bent portion. A fixing screw portion 38 is formed adjacently so as not to become. In this embodiment, the fixing screw portion 36 constitutes a common positive terminal and the fixing screw portion 38 constitutes a common negative terminal. Further, insulating papers 45 and 46 having a larger area than the external connection portions 16 and 18 are inserted between the overlapped external connection portions 16 and 18 so as to insulate them.

  In addition, the common connection portion 20 formed at the end portions of the bus bars 42 and 43 forms connection pieces 50 and 52 by bending the end portions of the bus bars 42 and 43 into L-shapes. The formed fixing hole 54 is connected by screws 56 or rivets as connecting means.

  With such a configuration, in the connection body 4, the bus bars 41 and 42 are sandwiched with the insulating paper 45 and are configured as a first laminated body with an adhesive, and the bus bars 43 and 44 are sandwiched with the insulating paper 46. It is comprised as a 2nd laminated body with an adhesive material. For example, the capacitors 61 to 64 and the capacitors 81 to 84 are grouped into the capacitor groups 6 and 8, and the bus bars 41 and 42 that are the first laminated bodies are connected to the capacitor group 6 side. By connecting the bus bars 43 and 44, which are the second laminated body, to the capacitor group 8 side, the capacitor groups 6 and 8 are paralleled, and then the bus bars 42 and 43 are connected and shared. As shown in FIG. 4, capacitors 61 to 64 and 81 to 84 can be parallelized and serialized.

  According to the capacitor connection structure 2 configured using the connection body 4 in this way, the current flowing through each of the capacitors 61 to 64 and 81 to 84 in the bus bars 41 and 42 or the bus bars 43 and 44 configuring the connection body 4. When the current flowing through the driver (not shown) connected to the external connection portions 16 and 18 and the capacitor groups 6 and 8 is I, the direction of the current I is between the adjacent bus bars 41 and 42 or between the bus bars 43 and 44. In addition to the reverse direction, the bus bars 42 and 43 are also opposite to each other, and the effect of canceling out the magnetic field generated by each current I is enhanced, thereby greatly reducing the inductance.

Second Embodiment The second embodiment relates to an electronic component device of the present invention and shows a capacitor device. The second embodiment will be described with reference to FIGS. FIG. 5 is an exploded perspective view showing the capacitor device according to the second embodiment, and FIG. 6 is a perspective view showing the capacitor device.

  The capacitor device 70 is provided with a case 71 as a protective body. In the storage space 72 of the case 71, the connection body 4 according to the capacitor connection structure 2 described above, the first and second capacitor groups 6 are provided. , 8 are stored. In addition, support wall portions 74 and 76 and support column portions 78, 90, 92, and 93 are formed in the storage space portion 72 of the case 71. Screw holes 96 for fixing the screws 94 are formed in the support wall portions 74 and 76 and the column portions 78, 90, 92, and 93. First and second covers 98 and 100 are provided, and a through hole 102 is formed in the cover 98 at a position corresponding to the screw hole 96. Similarly, the cover 100 is also in a position corresponding to the screw hole 96. A through hole 104 is formed.

  In this way, the capacitor group 6 and 8 including the connection body 4 is accommodated in the case 71. The capacitor groups 6 and 8 are covered with the covers 98 and 100, and are fixed in the case 71 by the screws 94. 70 can be configured.

  And according to such a capacitor | condenser apparatus 70, since the capacitor | condenser connection structure 2 and the connection body 4 which were already described are provided, the parallelization and serialization of the several capacitors 61-64 and 81-84 are implement | achieved. In addition, simplification and compactness of the capacitor connection are realized, and the inductance is reduced by the connection body 4.

  Next, the above-described embodiments of the connection body, the electronic component connection structure, and the electronic component device according to the present invention will be described by listing modifications.

  (1) The connection body 4 may be formed of a substrate having the bus bars 41 to 44 as conductor patterns and the insulating paper 45 and 46 as insulators.

  (2) The capacitor groups 6 and 8 are each composed of four capacitors, but may be composed of three or less capacitors or five or more capacitors.

  (3) Although the four-layer structure including the bus bars 41 and 42 for connecting the connection body 4 to the capacitor group 6 and the bus bars 43 and 44 for connecting to the capacitor group 8 is used, the present invention is not limited to this, and the first capacitor group 6 The bus bars 41 and 42 connected to the positive electrode side connection bus bar and the negative electrode side connection bus bar may be laminated with an insulating member interposed therebetween, and the second capacitor group 8 may be laminated similarly. The body busbar may be 6 layers, 8 layers or more.

  (4) In the above embodiment, an electrolytic capacitor is exemplified as an electronic component having polarity. However, a capacitor other than an electrolytic capacitor such as a film capacitor, or an electronic component such as a resistor or a battery may be used. Even if a resistor or a film capacitor having no polarity is used, the inductance reduction effect can be obtained according to the present invention.

  (5) In the above embodiment, the bus bar 41 has the positive terminal 12 of the capacitor group 6, the bus bar 42 has the negative terminal 14 of the capacitor group 6, the bus bar 43 has the positive terminal 12 of the capacitor group 8, and the bus bar 44 has the negative terminal of the capacitor group 8. 14, the bus bar 41 is connected to the negative electrode terminal 14 of the capacitor group 6, the bus bar 42 is connected to the positive electrode terminal 12 of the capacitor group 6, the bus bar 43 is connected to the negative electrode terminal 14 of the capacitor group 8, and the bus bar 44 is connected to the positive electrode of the capacitor group 8. The terminal 12 may be connected, and the directions of currents flowing adjacent to each other can be opposite to each other. Similarly, an inductance reduction effect can be obtained.

  (6) In the above embodiment, the adjacent second bus bar 42 and the third bus bar 43 are made common, the first bus bar 41 is connected to the positive external connection portion 16, and the fourth bus bar 44 is connected to the negative electrode side. In the bus bars 41 to 44, the directions of the currents that flow adjacent to each other are shown to be opposite to each other. However, the present invention is not limited to this, and the first bus bar 41 and the fourth bus bar 44 are not limited thereto. And connecting the positive external connection portion 16 to the second bus bar 42 and connecting the negative external connection portion 18 to the third bus bar 43. The directions of the flowing currents can be set in opposite directions.

As described above, the most preferred embodiment of the present invention has been described. However, the present invention is not limited to the above description, and is described in the claims or the best for carrying out the invention. Various modifications and changes can be made by those skilled in the art based on the gist of the invention disclosed in the embodiments, and it goes without saying that such modifications and changes are included in the scope of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, regarding the serial-parallel connection of several electronic components, such as a capacitor | condenser, the arrangement | positioning of an electronic component and the connection structure can be simplified, and the low inductance of a connection part can be aimed at, and it is useful.

It is a disassembled perspective view which shows the connection body and capacitor | condenser connection structure which concern on the 1st Embodiment of this invention. It is a perspective view which shows a connection body. It is a perspective view which shows the connection structure of a capacitor | condenser. It is a figure which shows the equivalent connection structure of the connection structure of a capacitor | condenser. It is a disassembled perspective view which shows the capacitor | condenser apparatus which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows a capacitor | condenser apparatus.

Explanation of symbols

2 Capacitor connection structure 4 Connection body 6 First capacitor group (first electronic component group)
8 Second capacitor group (second electronic component group)
12 Positive terminal 14 Negative terminal 16, 18 External connection portion (first and second connection terminal portions)
20 Common connection part 22, 26 Connection hole (connection part)
24, 28 Through hole (through part)
41 1st bus bar 42 2nd bus bar 43 3rd bus bar 44 4th bus bar 45, 46 Insulating paper (insulating member)
61-64, 81-84 Capacitors (electronic parts)

Claims (5)

A first and second electronic component group in which the terminal sides of a plurality of electronic components are opposed to each other, and the first electronic component group disposed within a facing interval between the first and second electronic component groups. And a connection body used for connection between terminals of the second electronic component group,
A first bus bar that connects the positive terminal side of the electronic components of the first group of electronic components in common,
A second bus bar that connects the negative terminal side of the electronic components of the first group of electronic components in common,
A third bus bar which connects the positive electrode terminal side of the electronic components of the second group of electronic components in common,
A fourth bus bar for connecting the negative terminal side of the electronic components of the second group of electronic components in common,
An insulating member interposed between the first bus bar and the second bus bar, the third bus bar and the fourth bus bar;
A common connection for connecting the first bus bar and the fourth bus bar, or the second bus bar and the third bus bar;
A connection terminal portion formed on the second bus bar and the third bus bar, or the first bus bar and the fourth bus bar, in which the common connection portion is not formed;
The first bus bar, the second bus bar, the third bus bar, and the fourth bus bar are stacked via the insulating member, and the common connection portion and the connection terminal portion are close to each other. the first through the fourth is arranged to the busbar Rutotomoni, the direction of the current flowing in the said current flowing through the first bus bar second bus bar is set in the opposite direction so as to flow into the second bus bar The direction of the current and the current flowing through the third bus bar is set in the opposite direction, and the direction of the current flowing through the third bus bar and the current flowing through the fourth bus bar is set in the reverse direction. Connected body. A first laminate comprising the first bus bar, the insulating member and the second bus bar;
A second laminate comprising the third bus bar, the insulating member and the fourth bus bar;
A connecting portion that is formed on the first bus bar and / or the second bus bar of the first stacked body and connects one terminal side of the electronic components of the first electronic component group, and the other terminal side is not connected A penetrating part to be passed by contact;
A connection portion that is formed on the third bus bar and / or the fourth bus bar of the second stacked body and connects one terminal side of the electronic components of the second electronic component group, and the other terminal side is not connected A penetrating part to be passed by contact;
The connection body according to claim 1, further comprising: A first connection terminal portion formed integrally with the first bus bar or the second bus bar of the first electronic component group and connected to an external circuit;
The insulating member is interposed between the first connection terminal portion and the third bus bar or the fourth bus bar of the second electronic component group, and is formed integrally with the external circuit. A second connection terminal connected to
The connection body according to claim 1, further comprising: An electronic component connection structure comprising first and second electronic component groups, each terminal side of a plurality of electronic components facing each other, and first, second, third, and fourth bus bars,
The positive terminal side of each electronic component of the first electronic component group is commonly connected to the first bus bar, and the negative terminal side of each electronic component of the first electronic component group is commonly connected to the second bus bar. The positive terminal side of each electronic component of the second electronic component group is commonly connected to the third bus bar, and the negative electrode of each electronic component of the second electronic component group is connected to the fourth bus bar. 4. A connection structure for an electronic component comprising the connection body according to claim 1, wherein the terminal side is connected in common.   An electronic component device comprising the electronic component connection structure according to claim 4 in a housing.