WO2016103918A1 - Module condensateur et système de conversion d'énergie - Google Patents

Module condensateur et système de conversion d'énergie Download PDF

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Publication number
WO2016103918A1
WO2016103918A1 PCT/JP2015/080913 JP2015080913W WO2016103918A1 WO 2016103918 A1 WO2016103918 A1 WO 2016103918A1 JP 2015080913 W JP2015080913 W JP 2015080913W WO 2016103918 A1 WO2016103918 A1 WO 2016103918A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
negative electrode
positive electrode
electrode bus
insulating paper
Prior art date
Application number
PCT/JP2015/080913
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English (en)
Japanese (ja)
Inventor
西山　茂紀
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株式会社村田製作所
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Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Publication of WO2016103918A1 publication Critical patent/WO2016103918A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H01G2/04—Mountings specially adapted for mounting on a chassis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present invention relates to a capacitor module and a power conversion system.
  • Electric vehicles, hybrid vehicles, and the like include a power conversion device such as an inverter that converts power between a battery (DC power supply) and a motor.
  • the power conversion device includes an inverter unit having a plurality of switching elements (semiconductor elements) and a smoothing capacitor module for smoothing the voltage from the battery and outputting it to the inverter unit.
  • the smoothing capacitor module includes a pair of bus bars that connect the battery and the inverter unit, and a smoothing capacitor element that is connected between the pair of bus bars.
  • the smoothing capacitor module disclosed in Patent Document 1 includes a pair of positive electrode bus bar and negative electrode bus bar, and a capacitor element having a positive electrode and a negative electrode.
  • the positive electrode of the capacitor element is connected to a positive electrode connection portion located between both terminals of the positive electrode bus bar.
  • the negative electrode of the capacitor element is connected to a negative electrode connection portion located between both terminals of the negative electrode bus bar.
  • the positive electrode bus bar has an output terminal on the switching element side, and has an exposed portion (referred to as a first exposed portion as appropriate) located between the output terminal and the positive electrode connecting portion.
  • the negative electrode bus bar includes an output terminal on the switching element side, and has an exposed portion (referred to as a second exposed portion as appropriate) positioned between the output terminal and the negative electrode connecting portion.
  • the smoothing capacitor module has a configuration in which the first exposed portion and the second exposed portion are overlapped via insulating paper.
  • the first exposed portion of the positive electrode bus bar and the second exposed portion of the negative electrode bus bar are arranged so as to overlap each other via the insulating paper, and the current flowing through the positive electrode bus bar and the negative electrode bus bar is Flows in opposite directions.
  • the magnetic flux generated by the current flowing through each bus bar is canceled, and the mutual inductance between the bus bars can be reduced. That is, the inductances are canceled each other and the ESL (equivalent series inductance) is reduced.
  • the insulation distance between the output terminal of the positive electrode bus bar and the second exposed portion of the negative electrode bus bar and the output terminal of the negative electrode bus bar and the first exposed portion of the positive electrode bus bar are In order to secure the insulation distance, the outer peripheral edge of the insulating paper is configured to protrude outward from the exposed portion of both bus bars by a distance that ensures the creepage distance. As a result, the output terminals of both bus bars become longer by the amount of protrusion of the insulating paper. For this reason, there exists a problem that the smoothing capacitor module cannot be reduced in size. Moreover, since both output terminals are spaced apart from each other, the inductances of the output terminal portions cannot be canceled from each other. As a result, there is a problem that the ESL becomes large due to the long output terminal portion. If the ESL is large, the surge absorption of the capacitor will not increase.
  • the present invention has been made in view of the above circumstances, and a capacitor module and a power conversion that are reduced in size and reduced in ESL (equivalent series inductance) while ensuring an insulation distance between the positive electrode bus bar and the negative electrode bus bar.
  • the purpose is to provide a system.
  • a capacitor module comprising a positive electrode bus bar, a negative electrode bus bar, and a capacitor element having a positive electrode and a negative electrode,
  • the positive electrode is connected to a positive electrode connecting portion located between both terminals of the positive electrode bus bar;
  • the negative electrode is connected to a negative electrode connecting portion located between both terminals of the negative electrode bus bar,
  • the positive electrode bus bar has an overlapping portion which overlaps with the negative electrode bus bar in a non-contact state between one terminal of the both terminals and the positive electrode connecting portion,
  • the negative electrode bus bar has an overlapping portion which overlaps with the positive electrode bus bar in a non-contact state between one terminal of the two terminals and the negative electrode connecting portion,
  • the capacitor module is interposed between the overlapping portion of the positive electrode bus bar and the overlapping portion of the negative electrode bus bar, and an insulating member having a size including the entire overlapping portion; Of the edge portion close to the one terminal of the insulating member, a portion that does
  • the insulating member is configured by superposing a first insulating member whose one surface is in contact with the positive electrode bus bar and a second insulating member whose one surface is in contact with the negative electrode bus bar,
  • the bent portion of the first insulating member is a portion of the edge portion close to the one terminal that is not overlapped with the one terminal of the positive electrode bus bar, and is bent to the positive electrode bus bar side
  • the bent portion of the second insulating member may be formed by bending a portion of the edge portion close to the one terminal that does not overlap the one terminal of the negative electrode bus bar toward the negative electrode bus bar. Good.
  • the insulating member has one surface in contact with the positive electrode bus bar and the opposite surface in contact with the negative electrode bus bar,
  • the edge on the one terminal side of the overlapping part of the other bus bar of the two bus bars is at a position retracted at least by an insulation distance from the edge on the one terminal side of the overlapping part of the one bus bar,
  • the bent portion may be bent toward the one bus bar.
  • the bending angle of the bent portion may be a right angle.
  • the bending angle of the bent portion may be an acute angle or an obtuse angle.
  • a power conversion system is a power conversion system that converts one of DC power and AC power into the other,
  • the smoothing capacitor for smoothing a DC voltage includes the capacitor module according to the first aspect.
  • the present invention it is possible to provide a capacitor module and a power conversion system that are reduced in size and reduced in ESL while ensuring an insulation distance between the positive electrode bus bar and the negative electrode bus bar.
  • FIG. 1A is a diagram showing a state in which insulating paper is positioned at each output terminal portion shown in FIG. 3. It is a figure for comparing and explaining each output terminal part of the composition of a comparative example, the composition of Embodiment 1, and the composition of Embodiment 2.
  • FIG. 1 is a circuit block diagram illustrating an example of a power conversion system using a capacitor module according to Embodiment 1.
  • FIG. It is an enlarged plan view of the output terminal portion of the capacitor module according to Embodiment 2 of the present invention.
  • FIG. 7B is a side view of the output terminal portion shown in FIG. 7A.
  • FIG. 7B is an exploded perspective view of an output terminal portion of the capacitor module shown in FIG. 7A. It is a side view of the output terminal part of the capacitor module concerning the 1st modification. It is a side view of the output terminal part of the capacitor module concerning the 2nd modification. It is a top view of the output terminal part of the capacitor module concerning the 3rd modification. It is a side view of the output terminal part shown to FIG. 10A.
  • the capacitor module 100 includes a bus bar 30, a capacitor element 40, an insulating paper set 50 including two sheets of insulating paper 50a and 50b, a capacitor case 60, And a molding material 70.
  • the bus bar 30 includes a pair of opposing positive electrode bus bar 10 and negative electrode bus bar 20.
  • the capacitor element 40 is connected between the positive electrode bus bar 10 and the negative electrode bus bar 20.
  • the insulating paper set 50 is interposed between both portions (between an overlapping portion 15 and an overlapping portion 25 described later) where the positive electrode bus bar 10 and the negative electrode bus bar 20 are overlapped in a non-contact manner.
  • the positive electrode bus bar 10 and the negative electrode bus bar 20 are conductors formed of a metal material such as copper or aluminum.
  • the positive electrode bus bar 10 and the negative electrode bus bar 20 are used as, for example, an electric circuit for a DC power source.
  • the positive electrode bus bar 10 includes a main body 11.
  • the main body 11 has a single shape that is not branched on one end side ( ⁇ X side) in the X-axis direction, and has a shape that is branched into three on the other end side (+ X side) in the X-axis direction.
  • An end portion on one end side of the main body portion 11 is a positive electrode terminal 12.
  • the end portions of the main body 11 that are branched into three on the other end side are a positive electrode U-phase terminal 13U, a positive electrode V-phase terminal 13V, and a positive electrode W-phase terminal 13W, respectively.
  • the positive terminal 12 of the positive bus bar 10 is connected to the positive terminal 211 of the DC power supply 210 shown in FIG.
  • the positive electrode U-phase terminal 13U of the positive electrode bus bar 10 is connected to the U-phase switching module 241U of the three-phase inverter 240.
  • the positive V-phase terminal 13 ⁇ / b> V of the positive bus bar 10 is connected to the V-phase switching module 241 ⁇ / b> V of the three-phase inverter 240.
  • the positive W-phase terminal 13W of the positive bus bar 10 is connected to the W-phase switching module 241W of the three-phase inverter 240.
  • the negative electrode bus bar 20 includes a main body 21.
  • the main body 21 has a single shape that is not branched on one end side ( ⁇ X side) in the X-axis direction, and has a shape that is branched into three on the other end side (+ X side) in the X-axis direction.
  • An end portion on one end side of the main body portion 21 is a negative electrode terminal 22.
  • the three branched ends on the other end side of the main body 21 are a negative electrode U-phase terminal 23U, a negative electrode V-phase terminal 23V, and a negative electrode W-phase terminal 23W, respectively.
  • the negative terminal 22 of the negative bus bar 20 is connected to the negative terminal 212 of the DC power supply 210 shown in FIG.
  • the negative electrode U-phase terminal 23U of the negative electrode bus bar 20 is connected to the U-phase switching module 241U of the three-phase inverter 240.
  • the negative V-phase terminal 23 ⁇ / b> V of the negative bus bar 20 is connected to the V-phase switching module 241 ⁇ / b> V of the three-phase inverter 240.
  • Negative electrode W-phase terminal 23 ⁇ / b> W of negative electrode bus bar 20 is connected to W-phase switching module 241 ⁇ / b> W of three-phase inverter 240.
  • the switching functions of the U-phase, V-phase, and W-phase switching modules 241U, 241V, and 241W of the three-phase inverter 240 are controlled by a control circuit (not shown) included in the three-phase inverter 240.
  • the three-phase inverter 240 is arrange
  • the capacitor module 100, the three-phase inverter 240, the cooler 90, etc. are accommodated in the case 95.
  • the terminals at both ends in the X-axis direction of the positive electrode bus bar 10 and the terminals at both ends in the X-axis direction of the negative electrode bus bar 20 are in a positional relationship that does not overlap each other in the XY plan view.
  • the positive electrode terminal 12 of the positive electrode bus bar 10 and the negative electrode terminal 22 of the negative electrode bus bar 20 are separated from each other by an insulation distance or more in the Y-axis direction. Thereby, the positive electrode terminal 12 and the negative electrode terminal 22 are in a positional relationship that does not overlap each other.
  • the “insulation distance” here refers to a distance that is predetermined as a distance necessary for insulation.
  • the positive electrode U-phase terminal 13U, the positive electrode V-phase terminal 13V and the positive electrode W-phase terminal 13W of the positive electrode bus bar 10 and the negative electrode U-phase terminal 23U, the negative electrode V-phase terminal 23V and the negative electrode W-phase terminal 23W of the negative electrode bus bar 20 Are separated by more than the insulation distance in the Y-axis direction.
  • the positive electrode U-phase terminal 13U and the negative electrode U-phase terminal 23U have a positional relationship that does not overlap each other.
  • the positive V-phase terminal 13V and the negative V-phase terminal 23V are in a positional relationship that does not overlap each other.
  • the positive W phase terminal 13W and the negative W phase terminal 23W are in a positional relationship that does not overlap each other.
  • the main body portion 11 of the positive electrode bus bar 10 includes a positive electrode connection portion 14 connected to the positive electrode 41 of the capacitor element 40 between both terminals.
  • the main body portion 21 of the negative electrode bus bar 20 includes a negative electrode connection portion 24 connected to the negative electrode 42 of the capacitor element 40 between both terminals.
  • the capacitor element 40 is, for example, a film capacitor.
  • a plurality of capacitor elements 40 are housed inside the capacitor case 60.
  • the capacitor case 60 has a side length of about 10 [cm] in the X-axis direction, a side length of about 30 [cm] in the Y-axis direction, and a side length of about 10 [cm] in the Z-axis direction.
  • Have The capacitor case 60 and the capacitor element 40 are not limited to this size.
  • Each positive electrode 41 of the plurality of capacitor elements 40 is connected to the positive electrode connection portion 14 of the positive electrode bus bar 10 by, for example, soldering.
  • Each negative electrode 42 of the plurality of capacitor elements 40 is connected to the negative electrode connecting portion 24 of the negative electrode bus bar 20 by, for example, soldering.
  • the capacitor element 40 in such a connected state is housed inside the capacitor case 60. Further, a molding material 70 as a sealing material is filled in the capacitor case 60. For this reason, the molding material 70 also enters between the capacitor case 60 and the capacitor element 40, between the capacitor case 60 and the bus bar 30, and the like. In FIG. 1A, in order to clearly show the molding material 70 in the capacitor case 60, the portion of the molding material 70 is hatched.
  • the positive electrode bus bar 10, the negative electrode bus bar 20, the capacitor element 40, and the capacitor case 60 are integrated by the molding material 70.
  • the mold material 70 is a curable resin material having insulating properties.
  • this curable resin material for example, an epoxy resin or a urethane resin can be used.
  • a part of the insulating paper set 50 (for example, the edge portion 51 close to the capacitor element 40) is fixed by the molding material 70. This prevents the insulating paper set 50 from being displaced from the state where it is located between the positive electrode bus bar 10 and the negative electrode bus bar 20. As a result, a short circuit between the positive electrode bus bar 10 and the negative electrode bus bar 20 due to the displacement of the insulating paper set 50 is prevented.
  • the positive electrode bus bar 10 includes a U-phase overlapping portion 15 that overlaps the negative electrode bus bar 20 in a non-contact state between the positive electrode connection portion 14 and the positive electrode U-phase terminal 13U in the main body portion 11.
  • the positive electrode bus bar 10 includes a V-phase overlapping portion 15 that overlaps the negative electrode bus bar 20 in a non-contact state between the positive electrode connecting portion 14 and the positive electrode V-phase terminal 13V in the main body portion 11.
  • the positive electrode bus bar 10 includes a W-phase overlapping portion 15 that overlaps the negative electrode bus bar 20 in a non-contact state between the positive electrode connecting portion 14 and the positive electrode W-phase terminal 13 ⁇ / b> W in the main body portion 11.
  • the negative electrode bus bar 20 includes a U-phase overlapping portion 25 that overlaps the positive electrode bus bar 10 in a non-contact state between the negative electrode connecting portion 24 and the negative electrode U-phase terminal 23U in the main body portion 21. Further, the negative electrode bus bar 20 includes a V-phase overlapping portion 25 that overlaps the positive electrode bus bar 10 in a non-contact state between the negative electrode connecting portion 24 and the negative electrode V-phase terminal 23V in the main body portion 21. The negative electrode bus bar 20 includes a W-phase overlapping portion 25 that overlaps the positive electrode bus bar 10 in a non-contact state between the negative electrode connecting portion 24 and the negative electrode W-phase terminal 23 ⁇ / b> W in the main body portion 21.
  • the insulating paper set 50 is, for example, a sheet-like insulating member.
  • the insulating paper set 50 is a stack of two insulating papers 50a and 50b.
  • the insulating paper set 50 includes an overlapping portion 15 for the U-phase, V-phase, and W-phase of the positive bus bar 10 and an overlapping portion 25 for the U-phase, V-phase, and W-phase of the negative bus bar 20. And is sandwiched between each. That is, there are three sets of insulating paper sets 50, one set for U phase, one for V phase, and one for W phase. These three sets of insulating paper 50 all have the same structure. That is, these insulating paper sets 50 have the same shape and are made of the same material.
  • the three insulating paper sets 50 may be appropriately referred to as a U-phase insulating paper set 50, a V-phase insulating paper set 50, and a W-phase insulating paper set 50.
  • the insulating paper set 50 includes a second insulating paper 50b (second insulating member) positioned on one end side ( ⁇ Z side) in the Z-axis direction, and a Z-axis direction.
  • second insulating paper 50b second insulating member
  • first insulating paper 50a first insulating member located on the other end side (+ Z side).
  • the insulating paper set 50 has a size including the entire overlapping portions 15 and 25 when viewed from the Z direction. In other words, the entire overlapping portion 15 and the overlapping portion 25 are covered with the insulating paper set 50. As shown in FIGS. 2A and 3, the overlapping portions 15 of the positive electrode bus bar 10 and the overlapping portions 25 of the negative electrode bus bar 20 face each other with an insulating paper set 50 interposed therebetween.
  • the upper surface (the surface on the + Z side in the Z-axis direction) is in contact with the positive electrode bus bar 10
  • the lower surface the surface on the ⁇ Z side in the Z-axis direction
  • the insulating paper 50b is in contact with the upper surface (the surface on the other end side in the Z-axis direction).
  • the upper surface (the surface on the + Z side in the Z-axis direction) of the second insulating paper 50b is in contact with the lower surface (the surface on the ⁇ Z side in the Z-axis direction) of the first insulating paper 50a, and the lower surface (Z-axis)
  • the surface on the ⁇ Z side in the direction is in contact with the negative electrode bus bar 20.
  • FIGS. 3 to 5 show portions of the insulating paper set 50, the positive bus bar 10 and the negative bus bar 20 that correspond to the + X side of the broken line AL shown in FIG. 2A. That is, the portions of the first insulating paper 50a and the second insulating paper 50b that are in contact with the overlapping portions 15 and 25, and the other end side (+ X side) of the positive electrode bus bar 10 and the negative electrode bus bar 20 are illustrated. The correspondence between the two is clearly shown.
  • the U-phase insulating paper set 50 that is, the U-phase first insulating paper 50a and the second insulating paper 50b are on the side close to the switching module 241U (the other end side in the X-axis direction (+ X side)).
  • a bent portion 53 formed at the end edge portion is provided.
  • V-phase insulating paper set 50 and the W-phase insulating paper set 50 have the same configuration as the U-phase insulating paper set 50, only the U-phase insulating paper set 50 will be described below. .
  • the first insulating paper 50a for U-phase before forming the bent portion 53 is formed at the edge portion on the side close to the switching module 241U (the + X side in the X-axis direction) as shown by a two-dot chain line in FIG. , And a projecting portion 54 that projects to the + X side in the X-axis direction.
  • the overhanging portion 54 has a substantially rectangular shape in the XY plan view.
  • the protruding portion 54 is bent, for example, at a right angle to the + Z side in the Z-axis direction, so that a bent portion 53 of the first insulating paper 50a for U phase is formed.
  • the bending angle of the bent portion 53 is not limited to a right angle, and may be a substantially right angle.
  • the overhanging portion 54 is formed at a portion of the edge of the first insulating paper 50a that does not overlap the positive electrode U-phase terminal 13U of the positive electrode bus bar 10 when bent.
  • the second insulating paper 50b for the U phase before forming the bent portion 53 is formed at the edge portion on the side close to the switching module 241U (the + X side in the X-axis direction) as shown by a two-dot chain line in FIG. , And a projecting portion 54 projecting to the ⁇ X side in the X-axis direction.
  • the overhanging portion 54 has a substantially rectangular shape in the XY plan view.
  • the overhanging portion 54 is bent, for example, at a right angle to the ⁇ Z side in the Z-axis direction, thereby forming a bent portion 53 of the U-phase second insulating paper 50b.
  • the bending angle of the bent portion 53 is not limited to a right angle, and may be a substantially right angle.
  • the overhanging portion 54 is formed at a portion of the edge of the second insulating paper 50b that does not overlap the negative electrode U-phase terminal 23U of the negative electrode bus bar 20 when bent.
  • the U-phase second insulating paper 50b is the same as the U-phase first insulating paper 50a obtained by reversing the front and back (inverting the XY plane).
  • the first insulating paper 50a and the second insulating paper 50b are sheet-like insulating members made of a polymer such as an aramid polymer, for example. In the first insulating paper 50a and the second insulating paper 50b, a crease can be formed by bending. The first insulating paper 50a and the second insulating paper 50b are formed into extremely thin sheets having a thickness of, for example, 0.5 [mm] or less. As the first insulating paper 50a and the second insulating paper 50b, for example, Nomex (registered trademark) paper may be used.
  • the bent portion 53 is formed by bending the protruding portion 54 of the first insulating paper 50a and the second insulating paper 50b in the Z-axis direction.
  • a bent side 53a of the bent portion 53 indicates the formed fold.
  • the bent portion 53 can be held in a state bent at a right angle.
  • the first insulating paper 50a and the second insulating paper 50b are sheet-like insulating members formed by attaching a resin to a synthetic fiber such as an aramid fiber, and can be held in a folded state. It may be anything.
  • the total length L of the shortest length L2 from the front end side to the negative electrode U-phase terminal 23U of the negative electrode bus bar 20 is a length equal to or longer than an insulation distance (for example, 8 [mm]). That is, the total length L is a length that ensures an insulation distance (for example, 8 [mm]).
  • the total length L is not less than the insulation distance without considering the thickness, but the thickness of the first insulating paper 50a is also equal.
  • the added total length L may be greater than or equal to the insulation distance.
  • the shortest length L1 from the overlapping portion 25 of the negative electrode bus bar 20 to the leading edge, and the leading edge to the positive electrode is a length equal to or longer than the insulation distance (for example, 8 [mm]). That is, the total length L is a length that ensures an insulation distance (for example, 8 [mm]).
  • the total length L is not less than the insulation distance without considering such thickness, but the thickness of the second insulating paper 50b is also equal.
  • the added total length L may be greater than or equal to the insulation distance.
  • the first insulating paper 50 a is located at one end side ( ⁇ Y side) and the other end side (+ Y side) in the Y-axis direction than the overlapping portion 15 of the positive electrode bus bar 10. It protrudes outside.
  • the creeping length L3 in the Y-axis direction of the protruding portion is a length (for example, 4 [mm] in this embodiment) that is more than half of the insulation distance (for example, 8 [mm]).
  • the total length L4 (see FIG. 2A) is a length equal to or longer than the insulation distance (for example, 8 [mm]). In other words, the total length L4 is a length that secures an insulation distance (for example, 8 [mm]).
  • the first insulating paper 50a protrudes outside the overlapping portion 15 of the positive electrode bus bar 10 by the thickness of the bent portion 53 on the other end side (+ X side) in the X-axis direction.
  • the bent portion 53 protrudes to the other end side (+ Z side) in the Z-axis direction.
  • the second insulating paper 50 b is located at one end side ( ⁇ Y side) and the other end side (+ Y side) in the Y-axis direction than the overlapping portion 25 of the negative electrode bus bar 20. It protrudes outside.
  • the creeping length L3 in the Y-axis direction of the protruding portion is a length (for example, 4 [mm] in this embodiment) that is more than half of the insulation distance (for example, 8 [mm]).
  • the total length L4 (see FIG. 2A) is a length equal to or longer than the insulation distance (for example, 8 [mm]). In other words, the total length L4 is a length that secures an insulation distance (for example, 8 [mm]).
  • the second insulating paper 50b protrudes outside the overlapping portion 25 of the negative electrode bus bar 20 by the thickness of the bent portion 53 on the other end side (+ X side) in the X-axis direction.
  • the bent portion 53 protrudes to one end side ( ⁇ Z side) in the Z-axis direction.
  • the overlap length is the length of the overlapping portion of the bent side 53a of the bent portion 53 of the first insulating paper 50a and the bent side 53a of the bent portion 53 of the second insulating paper 50b.
  • the length LC is equal to or longer than the insulation distance (for example, 8 [mm]). Thereby, the insulation distance between both the overlapping parts 15 and 25 can be ensured, and the short circuit between both the overlapping parts 15 and 25 can be prevented.
  • the overlap length LC may be a length much longer than the insulation distance (for example, 8 [mm]). In this case, the capacitor module 100 can secure a sufficient insulation distance between the overlapping portions 15 and 25.
  • the capacitor module 100 of the first embodiment is compared with the capacitor module having the configuration of the comparative example, and the comparison result will be described.
  • one sheet of insulating paper 50 c is interposed between the overlapping portion 15 of the positive electrode bus bar 10 and the overlapping portion 25 of the negative electrode bus bar 20.
  • Insulation distance for example, 8 [mm]
  • the output terminal of positive electrode bus bar 10 for example, positive electrode U-phase terminal 13U
  • overlapping portion 25 of negative electrode bus bar 20 and the output terminal of negative electrode bus bar 20 for example, negative electrode U-phase terminal 23 U, etc.
  • the overlapping portion 15 of the positive electrode bus bar 10 must be ensured (for example, 8 [mm]).
  • the outer peripheral edge of the sheet of insulating paper 50c is X-axis enough to secure the creepage distance LA (for example, 8 [mm]) shown in FIG. 5 rather than the overlapping portions 15 and 25 of both bus bars 10 and 20. It sticks out in the direction.
  • both output terminals (for example, the positive U-phase terminal 13U, the negative U-phase terminal 23U, etc.) of both bus bars 10 and 20 are in the X-axis direction by the amount of protrusion (for example, 8 [mm]) of the insulating paper 50c in the X-axis direction. It will be long. Thereby, the capacitor module cannot be reduced in size in the configuration of the comparative example.
  • both output terminals (for example, the positive electrode U-phase terminal 13U, the negative electrode U-phase terminal 23U, and the like) are arranged apart from each other in the XY plan view. For this reason, the inductance cannot be canceled mutually for the output terminal portion. In the output terminal portion of the comparative example shown in FIG.
  • the length NC of the portion where the inductances cannot be mutually canceled is shown.
  • the overlapping portions 15 and 25 of the bus bars 10 and 20 are portions where the inductances can be canceled each other, and the length CA of the portions that can be canceled is shown. Therefore, there is a problem that the ESL becomes large due to the output terminal portion being longer by the creepage distance LA (for example, 8 [mm]). If the ESL is large, the surge absorption of the capacitor will not increase.
  • the insulating paper set 50 that is, the U-phase first insulating paper 50a and the second insulating paper 50b are closer to the switching module 241U ( A bent portion 53 is formed at an end edge portion on the other end side in the X-axis direction.
  • the output terminals (for example, the positive U-phase terminal 13U and the negative U-phase terminal 23U) of both bus bars 10 and 20 can be shortened in the X-axis direction by the shortened length LS (for example, about 8 [mm]) shown in FIG. . Therefore, the capacitor module can be reduced in size.
  • the output terminals of both bus bars 10 and 20 are, for example, about 8 [mm] shorter in the X-axis direction than the configuration of the comparative example. That is, the length NC of the portion where the inductance cannot be canceled is shortened by the creepage distance LA of the comparative example. For this reason, in the first embodiment, the ESL can be further reduced. Therefore, the surge absorption of the capacitor is increased.
  • the capacitor module 100 has a size including the entire overlapping portions 15 and 25 between the overlapping portion 15 of the positive electrode bus bar 10 and the overlapping portion 25 of the negative electrode bus bar 20.
  • a sheet-like insulating paper set 50 is interposed.
  • the insulating paper set 50 includes a bent portion 53 that is bent to one side of the positive electrode bus bar 10 or the negative electrode bus bar 20 at an end edge portion on the other end side (+ X side) in the X-axis direction.
  • a length L1 (creeping length) from one side of the positive electrode bus bar 10 or the negative electrode bus bar 20 to the front end side of the bent portion 53, and the positive bus bar 10 or the negative electrode bus bar 20 from the front end side of the bent portion 53.
  • the total length L with the length L2 (creeping length) to the output terminal on the other side is equal to or longer than the insulation distance. That is, the total length L is a length that secures at least an insulation distance.
  • the sum of the lengths in the Z-axis direction on both sides of the bent portion 53 of the insulating paper set 50 may be a length that secures an insulation distance. For this reason, the length in the X-axis direction of the edge portion on the + X side of the insulating paper set 50 can be shortened. Therefore, the insulating paper (that is, the insulating paper set 50) can be reduced.
  • the bent portion 53 of the first insulating paper 50a is the positive electrode U of the positive bus bar 10 among the edge portions on the other end side (+ X side) in the X-axis direction of the first insulating paper 50a.
  • the protruding portion 54 that does not overlap the phase terminal 13U is formed by being bent toward the positive electrode bus bar 10 side.
  • the combined length L is equal to or greater than the insulation distance.
  • the bent portion 53 of the second insulating paper 50b is the negative electrode U-phase terminal 23U of the negative electrode bus bar 20 out of the edge portion on the other end side (+ X side) in the X-axis direction of the second insulating paper 50b.
  • the overhanging portion 54 that is a portion that does not overlap with the negative electrode is formed by bending the negative electrode bus bar 20 side.
  • the combined length L is equal to or greater than the insulation distance.
  • both the output terminal (positive electrode U-phase terminal 13U and the like) of the positive electrode bus bar 10 and the output terminal (positive electrode U-phase terminal 13U and the like) of the negative electrode bus bar 20 can be shortened. That is, for both output terminal portions, the length NC of the portion where the inductance cannot be canceled can be shortened. For this reason, ESL can be made the smallest.
  • the bending angle of the bent portion 53 of the insulating paper set 50 is a right angle or a substantially right angle. For this reason, all the length L which added up the length L1, L2 (creeping length) of both surfaces of the bending part 53 can be made into insulation distance. Therefore, the insulating paper set 50 can be minimized while ensuring an insulation distance between the positive electrode bus bar 10 and the negative electrode bus bar 20.
  • the overlapping length of the bent side 53a of the bent portion 53 of the first insulating paper 50a and the bent side 53a of the bent portion 53 of the second insulating paper 50b is equal to or longer than the insulating distance. Therefore, the insulation distance between the overlapping parts 15 and 25 is securable. Therefore, it is possible to prevent the overlapping portion 15 of the positive electrode bus bar 10 and the overlapping portion 25 of the negative electrode bus bar 20 from being short-circuited.
  • the power conversion system 200 converts the DC power from the DC power supply 210 into three-phase AC power and supplies it to the motor 260 via the three-phase power supply line 250, and the power generated by the rotation of the motor 260.
  • the power conversion system 200 includes a DC power supply 210, a capacitor module 100, and a three-phase inverter 240.
  • the DC power supply 210 is a battery (secondary battery), for example.
  • DC power supply 210 and three-phase inverter 240 are connected by a pair of positive electrode bus bar 10 and negative electrode bus bar 20, which are electric circuits for DC power signals in capacitor module 100.
  • the DC voltage from the DC power supply 310 is input to the smoothing capacitor 221 of the capacitor module 100 and smoothed by the smoothing capacitor 221.
  • the DC voltage is output to the three-phase inverter 240.
  • the smoothing capacitor 221 is a smoothing capacitor for removing a surge component superimposed on the DC voltage supplied from the DC power supply 310. That is, the smoothing capacitor 221 has surge absorption.
  • the smoothing capacitor 221 the capacitor element 40 according to the first embodiment is used.
  • the three-phase inverter 240 can convert the input DC power into three-phase AC power and output it.
  • the three-phase inverter 240 includes a U-phase switching module 241U, a V-phase switching module 241V, and a W-phase switching module 241W.
  • Each of these switching modules 241U, 241V, and 241W is configured with two switching elements 242 built therein.
  • the switching element 242 includes, for example, a semiconductor element such as an IGBT (Insulated Gate Bipolar Transistor) and a flywheel diode.
  • the three-phase AC power output from the three-phase inverter 240 is supplied to the motor 260 via the three-phase power supply line 250.
  • the three-phase inverter 340 converts the input three-phase AC power into DC power and outputs the DC power to the smoothing capacitor 221.
  • Smoothing capacitor 221 smoothes the DC voltage by removing the surge component superimposed on the DC voltage output from three-phase inverter 240.
  • the DC power is supplied to the DC power supply 310, and the DC power supply 310 that is a battery is charged.
  • the power conversion system 200 includes the capacitor module 100 that is miniaturized while ensuring an insulation distance between the positive electrode bus bar 10 and the negative electrode bus bar 20. For this reason, the power conversion system which reduced in size and made ESL small can be provided.
  • the capacitor module according to Embodiment 2 of the present invention includes only one sheet of the second insulating paper 50b in the X-axis direction of the overlapping portion 15 of the positive electrode bus bar 10.
  • the other end (+ X side) edge 15a is set back from the other end side (+ X side) edge 25a of the overlapping portion 25 of the negative electrode bus bar 20 toward one end side ( ⁇ X side) in the X-axis direction. This is different from the first embodiment described above. The rest is the same as in the first embodiment.
  • the end 15a on the other end side (+ X side) in the X-axis direction of the overlapping portion 15 of the positive electrode bus bar 10 is on the other end side (+ X side) in the X-axis direction of the overlapping portion 25 of the negative electrode bus bar 20. It is in a position retracted from the end edge 25a to one end side ( ⁇ X side) in the X-axis direction by at least an insulation distance (for example, 8 [mm]).
  • the overlapping portion 15 of the positive electrode bus bar 10 has a shape in which the other end side (+ X side) in the X-axis direction is cut out by a rectangular portion RA.
  • the side length EC of the rectangular portion RA in the X-axis direction is equal to the insulation distance (for example, 8 [mm]).
  • the length of one side in the Y-axis direction of the rectangular portion RA is one end side in the Y-axis direction of the positive electrode U-phase terminal 13U from the other side (+ Y side) of the overlapping portion 15 of the positive electrode bus bar 10 in the Y-axis direction. It is equal to the length to the side of ( ⁇ Y side).
  • the positive electrode bus bar 10 according to the second embodiment may be manufactured by excluding the rectangular portion RA from the overlapping portion 15 afterwards.
  • the positive electrode bus bar 10 according to the second embodiment may be manufactured without the rectangular portion RA when the positive electrode bus bar 10 is manufactured.
  • the bent portion 53 of the second insulating paper 50b is the same as that in the first embodiment. That is, the length L1 (creeping length) from the overlapping portion 25 of the negative electrode bus bar 20 to the front end side of the bent portion 53 and the length from the front end side of the bent portion 53 to the positive electrode U-phase terminal 13U of the positive electrode bus bar 10
  • the total length L with L2 (creeping length) is an insulation distance (for example, 8 [mm]) or more.
  • the overlapping portion 15 of the positive electrode bus bar 10 has no rectangular portion RA.
  • the portion where both the bus bars 10 and 20 do not overlap is the other end side (+ Y side) in the Y axis direction. Bigger than the part.
  • the length NC of the portion where the inductance cannot be mutually canceled is increased by the length of one side EC in the portion on the one end side ( ⁇ Y side) compared to the portion on the other end side (+ Y side). Yes.
  • the length NC of the portion where the inductance cannot be mutually canceled is shorter in the portion on the other end side (+ Y side) than the portion on the one end side ( ⁇ Y side).
  • the current flowing through the positive electrode bus bar 10 flows as indicated by an arrow IA shown in FIG. 7A.
  • the current flowing through the negative electrode bus bar 20 flows as shown by an arrow IB shown in FIG. 7A.
  • IA shown in FIG. 7A.
  • region EA shown to FIG. 7A.
  • the capacitor module according to the second embodiment has the same ESL as that of the comparative example shown in FIG.
  • the positive electrode U-phase terminal 13U of the positive electrode bus bar 10 the length NC of the portion where the inductance cannot be canceled mutually can be shortened.
  • the capacitor module according to the second embodiment can reduce the ESL compared to the configuration of the comparative example shown in FIG.
  • the capacitor module according to Embodiment 2 shown in FIG. 5 can be shortened at least in the X-axis direction and can be reduced in size as compared with the case of the configuration of the comparative example shown in FIG.
  • the insulating paper set 50 is configured by only one sheet of the second insulating paper 50b, but may be configured by only one sheet of the first insulating paper 50a.
  • the edge 25a on the other end side (+ X side) in the X axis direction of the overlapping portion 25 of the negative electrode bus bar 20 is one end side in the X axis direction than that of the overlapping portion 15 of the positive electrode bus bar 10 ( It may be set back to the -X side). Even with this configuration, the capacitor module has the same effects as those of the second embodiment.
  • the bending angle of the bending part 53 of the insulating paper set 50 is a right angle.
  • the bending angle may be an obtuse angle ⁇ 1, as in the first modification shown in FIG. 9A.
  • the shortest length L1 from the overlapping portion 15 of the positive electrode bus bar 10 to the front end side is equal to or greater than the insulation distance (for example, 8 [mm]). Is the length of
  • the shortest length L1 (creeping length) from the overlapping portion 25 of the negative electrode bus bar 20 to the front end side.
  • the combined length L with the spatial distance L7 which is the shortest length from the front end side to the positive electrode U-phase terminal 13U of the positive electrode bus bar 10, is a length equal to or longer than the insulation distance (for example, 8 [mm]).
  • the insulating paper set 50 is larger than that in the case of the first embodiment (that is, a right angle or a substantially right angle).
  • the capacitor module can reduce the ESL by the amount corresponding to the shortening of both output terminals (for example, the positive electrode U-phase terminal 13U and the negative electrode U-phase terminal 23U).
  • the bending angle of the bending part 53 of the insulating paper set 50 is a right angle.
  • the bending angle may be an acute angle ⁇ 2, as in the second modification shown in FIG. 9B.
  • the spatial distance L8 which is the shortest length from the overlapping portion 15 of the positive electrode bus bar 10 to the front end side, and the negative electrode bus bar from the front end side.
  • the total length L with the shortest length L2 (creeping length) to the 20 negative electrode U-phase terminals 23U is a length equal to or longer than the insulation distance (for example, 8 [mm]).
  • the spatial distance L8 that is the shortest length from the overlapping portion 25 of the negative electrode bus bar 20 to the front end side, and the positive U phase of the positive bus bar 10 from the front end side.
  • the combined length L with the shortest length L2 (creeping length) up to the terminal 13U is a length equal to or longer than an insulation distance (for example, 8 [mm]).
  • the insulating paper set 50 is larger than that in the case of the first embodiment (that is, a right angle or a substantially right angle).
  • the capacitor module can reduce the ESL by the amount corresponding to the shortening of both output terminals (for example, the positive electrode U-phase terminal 13U and the negative electrode U-phase terminal 23U).
  • the folding angle of the insulating paper set 50 is the acute angle ⁇ 2, but the acute angle ⁇ 2 may be 0 ° as in the third modification shown in FIGS. 10A and 10B. That is, the insulating paper set 50 may be folded in half.
  • the length L5 in the X-axis direction of the bent portion 53 of the first insulating paper 50a is equal to or longer than the insulation distance (for example, 8 [mm]). Longer than that.
  • the length L5 in the X-axis direction of the bent portion 53 of the second insulating paper 50b is also equal to or longer than the insulation distance (for example, 8 [mm]), and is longer than the above-described embodiments.
  • the bending angle of the bent portion 53 of the insulating paper set 50 is 0 °. That is, the insulating paper set 50 is folded in half. In this case, since the bent portion 53 becomes longer in the X-axis direction than in the case of a right angle or a substantially right angle, the insulating paper set 50 becomes larger. However, since the insulating paper set 50 is folded in half, a capacitor module that is smaller than the comparative example can be provided. Further, the capacitor module can reduce the ESL by the amount corresponding to the shortening of both output terminals (for example, the positive electrode U-phase terminal 13U and the negative electrode U-phase terminal 23U).
  • the capacitor module 100 according to the fourth modification includes a part of each bent portion 53 of the first insulating paper 50a and the second insulating paper 50b (here, in the Y-axis direction).
  • a curing material 80 is attached to the central portion). The point which attached the hardening material 80 differs from the above-mentioned Embodiment 1.
  • FIG. The curing material 80 is cured while being in contact with the bent portion 53 and the overlapping portions 15 and 25. Thereby, the bending state of the bending part 53 is fixed.
  • the hardened material 80 is hatched to clearly indicate its shape.
  • the curing material 80 for example, a photocurable resin material, a thermosetting resin material, or the like can be used.
  • the hardening material 80 should just be attached to at least one part of the whole bending part 53, may be attached to two places of the both ends of the Y-axis direction of the bending part 53, and may be attached to three or more places. Good. Further, the curing material 80 may be attached to the entire bent portion 53. Further, the curing material 80 may be attached to only one of the bent portions 53 of the first insulating paper 50a or the second insulating paper 50b.
  • the bent state of the bent portions 53 of the first insulating paper 50a and the second insulating paper 50b is fixed by the curing material 80. Accordingly, it is possible to prevent the bent state of the bent portion 53 from being released or changed due to an external factor such as contact with another object or external vibration. For this reason, the capacitor module 100 with improved reliability can be provided.
  • the capacitor module 100 of the fifth modified example overlaps the bent side 53a of the bent portion 53 of the first insulating paper 50a and the bent side 53a of the bent portion 53 of the second insulating paper 50b.
  • the overlap length LC1 that is the length of is made shorter than that of the above-described first embodiment while being equal to or longer than the insulation distance.
  • the capacitor module 100 according to the sixth modification has a length in the Y-axis direction between the positive electrode U-phase terminal 13U and the negative electrode U-phase terminal 23U with respect to the bent portion 53 of the second insulating paper 50b.
  • L6 is a length longer than the insulation distance.
  • the length L6 of the bent side 53a in the Y-axis direction is equal to or longer than the insulation distance from the output terminal (for example, the positive electrode U-phase terminal 13U) of the positive electrode bus bar 10 (the other bus bar).
  • the length L6 to the side 55 close to (for example, the negative electrode U-phase terminal 23U) is equal to or longer than the insulation distance.
  • the side 55 of the bent portion 53 near the output terminal (for example, the negative electrode U-phase terminal 23U) of the negative electrode bus bar 20 (one bus bar) is connected to the output terminal (for example, the negative electrode U) of the negative electrode bus bar 20 (one bus bar).
  • the configuration is separated from the phase terminal 23U and the like, since the insulation distance between the overlapping portions 15 and 25 of both bus bars 10 and 20 can be secured, the overlapping portion 15 of the positive bus bar 10 and the negative bus bar 20 Can be prevented from short-circuiting with each other.
  • the overlapping portion 15 retreats to one end side ( ⁇ X side) in the X axis direction, and the bent portion 53 of the second insulating paper 50b is the other end in the Y axis direction. It is assumed to be short on the side (+ Y side).
  • the overlapping portion 25 retreats to one end side ( ⁇ X side) in the X-axis direction, and the bent portion 53 of the first insulating paper 50a is one end side ( ⁇ Y side in the Y-axis direction). The same effect can be obtained even when the side is short.
  • the capacitor element 40 is a film capacitor, but various capacitors such as a ceramic capacitor and an electrolytic capacitor may be used. In each embodiment described above, the capacitor element 40 is a two-terminal capacitor, but may be a three-terminal capacitor.
  • a plurality of capacitor elements 40 are disposed inside the capacitor case 60, but one capacitor element 40 may be disposed.
  • the positive electrode bus bar 10 and the negative electrode bus bar 20 are arranged so that the overlapping portion 25 is located via the insulating paper set 50 on one end side ( ⁇ Z side) of the overlapping portion 15 in the Z-axis direction.
  • the positive electrode bus bar 10 and the negative electrode bus bar 20 are arranged so that the overlapping portion 15 is located on one end side ( ⁇ Z side) in the Z-axis direction of the overlapping portion 25 via the insulating paper set 50. It may be.
  • the positive electrode 41 of the capacitor element 40 is located on the other end side (+ Z side) in the Z-axis direction, and the negative electrode 42 of the capacitor element 40 is more in the Z-axis direction. Although it is located on one end side ( ⁇ Z side), it is not limited to this arrangement.
  • the positive electrode 41 may be positioned on one end side ( ⁇ X side) in the X-axis direction in FIG. 1B, and the negative electrode 42 may be positioned on the other end side (+ X side) in the X-axis direction.
  • the positive electrode 41 may be positioned on one end side ( ⁇ Y side) in the Y-axis direction of FIG. 1A, and the negative electrode 42 may be positioned on the other end side (+ Y side) in the Y-axis direction.
  • the power conversion system 200 of the first embodiment described above is an inverter system as shown in FIG. 6, but is not limited to this.
  • a DC-DC converter system, an AC-DC converter system, an AC-AC converter system, or the like may be used.
  • the capacitor module 100 of each embodiment can be applied.
  • the present invention is not limited to the above embodiment, and various modifications and applications are possible.
  • the capacitor module and the power conversion system do not have to include all the technical features shown in the above embodiment, and are described in the above embodiment so that at least one problem in the conventional technology can be solved. It may be provided with a part of the configuration.
  • the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention.
  • the capacitor module of the present invention is suitable for downsizing and reducing ESL (equivalent series inductance) while ensuring an insulation distance between the positive electrode bus bar and the negative electrode bus bar.
  • the power conversion system of the present invention is suitable for downsizing and reducing ESL.
  • SYMBOLS 10 Bus bar for positive electrodes 11 Body part 12 Positive terminal 13U Positive U phase terminal (one terminal) 13V Positive V phase terminal (one terminal) 13W Positive W phase terminal (one terminal) DESCRIPTION OF SYMBOLS 14 Positive electrode connection part 15 Overlapping part 15a End edge 16 End side 20 Bus bar for negative electrodes 21 Main-body part 22 Negative electrode terminal 23U Negative electrode U phase terminal (one terminal) 23V Negative V-phase terminal (one terminal) 23W Negative W phase terminal (one terminal) 24 Negative electrode connection portion 25 Overlap portion 25a Edge 30 Bus bar 40 Capacitor element 41 Positive electrode 42 Negative electrode 50 Insulating paper set 50a First insulating paper (insulating paper) 50b Second insulating paper (insulating paper) 51 edge part 53 bent part 53a bent side 54 overhang part 55 side 60 capacitor case 70 molding material 80 curing material 90 cooler 95 case 100 capacitor module 200 power conversion system 210 DC power supply 211 positive electrode terminal 221 input capacitor 240 three-phase inverter 241U, 241

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Inverter Devices (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

L'invention concerne un module condensateur (100) comprenant une barre-bus d'électrode positive (10), une barre-bus d'électrode négative (20) et un élément capacitif (40) ayant une électrode positive (41) et une électrode négative (42). L'électrode positive (41) est reliée à une unité de connexion d'électrode positive (14) positionnée entre les deux bornes de la barre-bus d'électrode positive (10). L'électrode négative (42) est reliée à une unité de connexion d'électrode négative (24) positionnée entre les deux bornes de la barre-bus d'électrode négative (20). Un assemblage de papier isolant (50) est interposé entre la portion de chevauchement (15) de la barre-bus d'électrode positive (10) et la portion de chevauchement (25) de la barre-bus d'électrode négative (20), lequel est suffisamment grand pour inclure la totalité des portions de chevauchement (15), (25). L'assemblage de papier isolant (50) est pourvu d'une portion courbée (53) au niveau du bord sur le côté +X dans la direction de l'axe X.
PCT/JP2015/080913 2014-12-26 2015-11-02 Module condensateur et système de conversion d'énergie WO2016103918A1 (fr)

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JP2014265430A JP2018026885A (ja) 2014-12-26 2014-12-26 コンデンサモジュールおよび電力変換システム
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018037487A (ja) * 2016-08-30 2018-03-08 トヨタ自動車株式会社 バスバ構造
WO2020241145A1 (fr) * 2019-05-24 2020-12-03 パナソニックＩｐマネジメント株式会社 Condensateur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013090529A (ja) * 2011-10-21 2013-05-13 Hitachi Constr Mach Co Ltd 電力変換装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013090529A (ja) * 2011-10-21 2013-05-13 Hitachi Constr Mach Co Ltd 電力変換装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018037487A (ja) * 2016-08-30 2018-03-08 トヨタ自動車株式会社 バスバ構造
WO2020241145A1 (fr) * 2019-05-24 2020-12-03 パナソニックＩｐマネジメント株式会社 Condensateur
JPWO2020241145A1 (fr) * 2019-05-24 2020-12-03
JP7390531B2 (ja) 2019-05-24 2023-12-04 パナソニックＩｐマネジメント株式会社 コンデンサ

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