WO2023084863A1 - Busbar positioning structure and electrical apparatus - Google Patents

Busbar positioning structure and electrical apparatus Download PDF

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Publication number
WO2023084863A1
WO2023084863A1 PCT/JP2022/031797 JP2022031797W WO2023084863A1 WO 2023084863 A1 WO2023084863 A1 WO 2023084863A1 JP 2022031797 W JP2022031797 W JP 2022031797W WO 2023084863 A1 WO2023084863 A1 WO 2023084863A1
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Prior art keywords
busbar
terminal
fastening
fastening hole
busbars
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PCT/JP2022/031797
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French (fr)
Japanese (ja)
Inventor
佑典 大嶋
翔太 鈴木
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株式会社明電舎
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Priority to CN202280074269.7A priority Critical patent/CN118216079A/en
Publication of WO2023084863A1 publication Critical patent/WO2023084863A1/en

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    • 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 busbar positioning structure applied to electrical equipment such as an inverter device.
  • bus bar for example, a bus bar for suppressing a surge applied to a rotary machine driving device disclosed in Patent Document 1 can be cited. According to this bus bar, overvoltage breakdown due to a reduction in surge voltage during the switching operation of the switching element is suppressed, power loss is reduced by lowering the impedance of the bus bar, and further effects of space saving and low cost are obtained.
  • busbars do not have positioning pins, so it takes time and effort to tighten the screws with good positional accuracy. Therefore, if the busbars are provided with positioning pins, it is possible to quickly and accurately secure the distance between the edge surfaces of different busbars for preventing discharge.
  • the inductance and impedance of the bus bar increase, making it impossible to reduce the surge voltage during the switching operation of the switching element, and furthermore, it may become impossible to reduce the power loss of the bus bar.
  • an object of the present invention is to improve the assemblability of the busbar and to reduce the inductance and impedance.
  • one aspect of the present invention is to provide a pair of terminal blocks on which busbars for connecting two electrical components of an electrical device are arranged, and a positioning pin erected on one of the terminal blocks for positioning the arrangement of the busbars; wherein the busbar is formed with an insertion hole into which the positioning pin is inserted, and the busbar is formed with a first fastening hole through which a fastener for fastening the terminal of one of the electrical components and the busbar is inserted. and a second fastening hole through which a fastener for fastening the terminal of the other electric component and the busbar is inserted, and the insertion hole extends from the first fastening hole to the second fastening hole in the busbar.
  • the diameter of the insertion hole is smaller than the diameters of the first fastening hole and the second fastening hole.
  • the positioning pin inserted into the insertion hole does not protrude from the insertion hole.
  • the electrical device is an inverter device, one electrical component is a DC capacitor of the inverter device, and the other electrical component is a DC capacitor of the inverter device.
  • Power module in the busbar positioning structure, the electrical device is an inverter device, one electrical component is a DC capacitor of the inverter device, and the other electrical component is a DC capacitor of the inverter device.
  • One aspect of the present invention is an electrical device having the busbar positioning structure described above.
  • FIG. 1 is a plan view of a busbar positioning structure that is one aspect of the present invention applied to electrical equipment;
  • FIG. FIG. 2 is a plan view of a state in which a harness is connected to the busbar of FIG. 1;
  • FIG. 3 is a longitudinal sectional view of the state of FIG. 2;
  • FIG. 2 is a basic circuit diagram of a power module to which the busbar of FIG. 1 is connected;
  • a busbar positioning structure 1 that is one aspect of the present invention shown in FIG. 1 is applied to terminal blocks 3 and 4 inside a housing 10 of an inverter device 2 that is an example of an electrical device.
  • a busbar positioning structure 1 includes a pair of terminal blocks 3 on which a busbar P is arranged, a pair of terminal blocks 4 on which a busbar N is arranged, and a positioning structure for positioning the arrangement of the busbars P and N on the terminal blocks 3 and 4. pins 5 and 6;
  • bus bar P connects the connection terminal 71 of the harness 7 and the connection terminal C1 on the P pole side of the DC capacitor C, which is one of the electrical components of the inverter device 2 .
  • the harness 7 is connected to the P pole side terminal of a power module 11 having a circuit including switching elements S1 to S6 shown in FIG. 4, which is one of the electrical components.
  • an insertion hole P1 into which a positioning pin 5 of one terminal block 3 described later is inserted, and a fastener 9 for fastening the connection terminal 71 and the P pole side terminal of the power module 11 to the bus bar P.
  • the insertion hole P1 is a portion of the bus bar P shown in FIG. It is arranged at an arbitrary position in the area a1 on the one end side of the bus bar P that is more than the distance away.
  • the diameter of the insertion hole P1 is set smaller than the diameters of the first fastening hole P2 and the second fastening hole P3.
  • the insertion hole P1 may be a through hole as long as the inserted positioning pin 5 does not protrude.
  • Busbar N The bus bar N connects the connection terminal 81 of the harness 8 connected to the N-pole side terminal of the power module 11 and the connection terminal C2 of the DC capacitor C on the N-pole side.
  • the insertion hole N1 is formed between the connecting portion (second fastening hole N3) of the DC capacitor C with the connecting terminal C2 and the connecting portion (first fastening hole N2) of the harness 8 with the connection terminal 81 in the bus bar N shown in FIG. It is arranged at an arbitrary position in the area a2 on the one end side of the bus bar N which is more than the distance away.
  • the diameter of the insertion hole N1 is set smaller than the diameters of the first fastening hole N2 and the second fastening hole N3.
  • the insertion hole N1 may be a through hole as long as the inserted positioning pin 6 does not protrude.
  • Terminal block 3 One terminal block 3 of the pair of terminal blocks 3 shown in FIG. A terminal portion 31 is provided.
  • the terminal portion 31 is formed with a fastening hole 310 into which the fastener 9 inserted through the first fastening hole P2 of the busbar P is screwed.
  • the other terminal block 3 of the pair of terminal blocks 3 has a terminal portion 32 to which the connection terminal C1 of the DC capacitor C arranged inside the housing 10 is connected.
  • the terminal portion 32 is formed with a fastening hole 320 into which the fastener 9 for connecting the connection terminal C1 to the terminal portion 32 via the busbar P is screwed.
  • Terminal block 4 One terminal block 4 of the pair of terminal blocks 4 is arranged in parallel with the one terminal block 3 , and is connected to the connecting terminal 81 of the harness 8 on the N pole side introduced into the housing 10 and the N pole of the power module 11 .
  • a terminal portion 41 to which a pole-side terminal is connected is provided.
  • the terminal portion 41 is formed with a fastening hole 410 into which the fastener 9 inserted through the first fastening hole N2 of the busbar N is screwed.
  • the other terminal block 4 of the pair of terminal blocks 4 is arranged in parallel with the other terminal block 3 and has a terminal portion 42 to which the connection terminal C2 of the DC capacitor C is connected.
  • the terminal portion 42 is formed with a fastening hole 420 into which the fastener 9 for connecting the connection terminal C2 to the terminal portion 42 via the busbar N is screwed.
  • the positioning pin 5 is erected at a position corresponding to the insertion hole P1 of the bus bar P on the one terminal block 3 .
  • the height of the positioning pin 5 and the thickness of the busbar P are set so that the positioning pin 5 does not protrude from the insertion hole P1 of the busbar P. As shown in FIG.
  • the positioning pin 6 is erected at a position corresponding to the insertion hole N1 of the busbar N on the one terminal block 4 .
  • the height of the positioning pin 6 and the thickness of the busbar N are set so that the positioning pin 6 does not protrude from the insertion hole N1 of the busbar N.
  • the busbars P are arranged on the pair of terminal blocks 3 inside the housing 10 . That is, as shown in FIGS. 1 and 3, the insertion hole P1 and the first fastening hole P2 of the busbar P meet the positioning pin 5 and the fastening hole 310 of one terminal block 3, respectively, so that one end side of the busbar P is connected to the one terminal block. 3 is arranged in the terminal portion 31 of the . At this time, the second fastening hole P ⁇ b>3 of the busbar P meets the fastening hole 320 of the other terminal block 3 , and the other end of the busbar P is placed on the terminal portion 32 of the terminal block 3 .
  • the busbars N are arranged on the pair of terminal blocks 4 inside the housing 10 . That is, as shown in FIG. 1, the insertion hole N1 and the first fastening hole N2 of the bus bar N meet the positioning pin 6 and the fastening hole 410 of one of the terminal blocks 4 so that one end of the bus bar N is connected to the one terminal block 4. It is arranged in the terminal portion 41 . At this time, the second fastening hole N3 of the busbar N meets the fastening hole 420 of the other terminal block 4, and the other end side of the busbar P is placed in the terminal portion 42 of the terminal block 4. As shown in FIG.
  • connection terminals 71, 81 of the harnesses 7, 8 introduced into the housing 10 are arranged in the terminal portions 31, 41 of the one terminal blocks 3, 4, respectively.
  • Connection terminals C1 and C2 of the DC capacitor C are arranged at terminal portions 32 and 42 of the other terminal blocks 3 and 4, respectively.
  • the fastener 9 inserted through the connecting terminal 71 of the harness 7 and the first fastening hole P2 of the bus bar P is screwed into the fastening hole 310 of the terminal portion 31 of the one terminal block 3.
  • the fastener 9 inserted through the connecting terminal C1 of the DC capacitor C and the second fastening hole P3 of the bus bar P is screwed into the fastening hole 320 of the terminal portion 32 of the other terminal block 3 .
  • the connecting terminal 81 of the harness 8 and the fastener 9 inserted through the first fastening hole N2 of the busbar N are screwed into the fastening hole 410 of the terminal portion 41 of the one terminal block 4 .
  • the fastener 9 inserted through the connecting terminal C2 of the DC capacitor C and the second fastening hole N3 of the bus bar N is screwed into the fastening hole 420 of the terminal portion 42 of the other terminal block 4 .
  • bus bars P, N are connected and fixed to the terminal blocks 3, 4 inside the housing 10 of FIG.
  • the shortest path indicated by the white arrow corresponds to the current path of the inverter device 2 and has the highest current density.
  • the current density is low in the regions a1, a2 on the one end sides of the bus bars P, N that are farther than the distance from the second fastening holes P3, N3 to the first fastening holes P2, N2.
  • the busbar positioning structure 1 since the insertion holes P1 and N1 into which the positioning pins 5 and 6 of the terminal blocks 3 and 4 are inserted are formed at arbitrary positions in the regions a1 and a2, the inductance of the busbars P and N is reduced. and the increase in impedance can be reduced.
  • the diameter of the insertion holes P1, N1 smaller than the diameters of the first fastening holes P2, N2 and the second fastening holes P3, N3, it is possible to further reduce increases in the inductance and impedance of the bus bars P, N. .
  • the thickness of the bus bars P, N or the height of the positioning pins 5, 6 are adjusted so that the positioning pins 5, 6 do not protrude from the insertion holes P1, N1. Since electric parts other than the DC capacitor C can be arranged on the positioning pins 5 and 6, there is no need to enlarge the bus bar more than necessary.
  • the positioning pins 5 and 6 and the insertion holes P1 and N1 are set at positions where the inductance value and impedance value of the busbar are not increased as much as possible. It is easy to assemble while securing the edge face distance of prevention.
  • the bus bars P, N can be assembled more easily. Also, increases in the inductance, impedance, loss, and heat generation of the busbars P and N can be suppressed. Furthermore, the surge voltage of the switching element is reduced by reducing the inductance of the bus bars P and N. The power efficiency of the inverter device 2 is improved by lowering the impedance of the bus bars P and N.
  • the busbar positioning structure of the present invention can also be applied to electrical equipment other than inverter devices using busbars.
  • busbars that connect electrical parts other than DC capacitors C and switching elements, similar to busbars P and N
  • the increase in inductance and impedance can be reduced. can be achieved. Therefore, even in a general busbar, by providing a hole into which the positioning pin is inserted on the end side of the busbar rather than the line of the shortest path of the current, it becomes easy to assemble while securing the distance between the edge surfaces to prevent discharge, and the impedance can be reduced.
  • the increase can be reduced, and the power loss reduction effect can be obtained.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

A busbar positioning structure 1 has: a pair of terminal blocks 3, 4 where busbars P, N connecting two electrical components (for example, a DC capacitor C and a power module 11) of an inverter device 2 are respectively located; and positioning pins 5, 6 that are provided in an upright manner to one of the terminal blocks 3, 4, and position the locations of the busbars P, N. Insertion holes P1, N1 into which the positioning pins 5, 6 are inserted are formed in the busbars P, N. The insertion holes P1, N1 are provided to the busbars P, N in arbitrary locations in regions a1, a2 that are at one end side of the busbars P, N and are a farther distance away from second fastening holes P3, N3 than first fastening holes P2, N2 are.

Description

バスバー位置決め構造及び電気機器Busbar positioning structure and electrical equipment
　本発明は、インバータ装置等の電気機器に適用されるバスバーの位置決め構造に関する。 The present invention relates to a busbar positioning structure applied to electrical equipment such as an inverter device.
　インバータ装置において直流コンデンサとスイッチング素子とが低インダクタンス且つ低インピーダンスのバスバーにより接続されることが多い。前記バスバーとしては例えば特許文献１の回転機駆動装置に適用されるサージ抑制用のバスバーが挙げられる。本バスバーによれば、スイッチング素子のスイッチング動作時のサージ電圧低減による過電圧破壊が抑制され、バスバーの低インピーダンス化による電力損失の低減、さらには、省スペース並びに低コストの効果が得られる。 In inverter devices, DC capacitors and switching elements are often connected by low-inductance and low-impedance bus bars. As the bus bar, for example, a bus bar for suppressing a surge applied to a rotary machine driving device disclosed in Patent Document 1 can be cited. According to this bus bar, overvoltage breakdown due to a reduction in surge voltage during the switching operation of the switching element is suppressed, power loss is reduced by lowering the impedance of the bus bar, and further effects of space saving and low cost are obtained.
特開２０１６－１４０２１０号公報JP 2016-140210 A
　従来のバスバーは位置決めピンを備えていないので位置精度良くねじ締結するためには手間を要する。そこで、前記バスバーに位置決めピンを設ければ、放電防止のための異なるバスバーの縁面距離の確保を迅速に正確に行える。 　Conventional busbars do not have positioning pins, so it takes time and effort to tighten the screws with good positional accuracy. Therefore, if the busbars are provided with positioning pins, it is possible to quickly and accurately secure the distance between the edge surfaces of different busbars for preventing discharge.
　しかしながら、前記バスバーに位置止めピンにより固定するためには、当該バスバーに位置止めピン用の貫通孔を確保しなければならない。 However, in order to fix the bus bar with the positioning pin, a through hole for the positioning pin must be provided in the bus bar.
　前記バスバーに前記貫通孔が形成されると、当該バスバーのインダクタンス並びにインピーダンスが増大し、スイッチング素子のスイッチング動作時のサージ電圧を低減できなくなる、さらには、当該バスバーの電力損失を低減できなくなる、おそれがある。 When the through-hole is formed in the bus bar, the inductance and impedance of the bus bar increase, making it impossible to reduce the surge voltage during the switching operation of the switching element, and furthermore, it may become impossible to reduce the power loss of the bus bar. There is
　本発明は、以上の事情を鑑み、バスバーの組み立て性の向上と共にインダクタンス並びにインピーダンスの低減を図ることを課題とする。 In view of the above circumstances, an object of the present invention is to improve the assemblability of the busbar and to reduce the inductance and impedance.
　そこで、本発明の一態様は、電気機器の二つの電気部品を接続するバスバーが配置される一対の端子台と、一方の前記端子台に立設されて前記バスバーの配置を位置決めする位置決めピンと、を有し、前記バスバーには、前記位置決めピンが挿入される挿入孔が形成され、前記バスバーには、一方の前記電気部品の端子と当該バスバーを締結させる締結具が挿通される第一締結孔と、他方の前記電気部品の端子と当該バスバーを締結させる締結具が挿通される第二締結孔が形成され、前記挿入孔は、前記バスバーにおいて、前記第一締結孔から前記第二締結孔までの距離よりも離れた当該バスバーの一端側の位置に配されたバスバー位置決め構造である。 Accordingly, one aspect of the present invention is to provide a pair of terminal blocks on which busbars for connecting two electrical components of an electrical device are arranged, and a positioning pin erected on one of the terminal blocks for positioning the arrangement of the busbars; wherein the busbar is formed with an insertion hole into which the positioning pin is inserted, and the busbar is formed with a first fastening hole through which a fastener for fastening the terminal of one of the electrical components and the busbar is inserted. and a second fastening hole through which a fastener for fastening the terminal of the other electric component and the busbar is inserted, and the insertion hole extends from the first fastening hole to the second fastening hole in the busbar. is a busbar positioning structure arranged at a position on the one end side of the busbar, which is more distant than the distance of .
　本発明の一態様は、前記バスバー位置決め構造において、前記挿入孔の口径は、前記第一締結孔及び前記第二締結孔の口径よりも小さい。 In one aspect of the present invention, in the busbar positioning structure, the diameter of the insertion hole is smaller than the diameters of the first fastening hole and the second fastening hole.
　本発明の一態様は、前記バスバー位置決め構造において、前記挿入孔に挿入された前記位置決めピンは当該挿入孔から突出しない。 According to one aspect of the present invention, in the busbar positioning structure, the positioning pin inserted into the insertion hole does not protrude from the insertion hole.
　本発明の一態様は、前記バスバー位置決め構造において、前記電気機器は、インバータ装置であり、一方の前記電気部品は、前記インバータ装置の直流コンデンサであり、他方の前記電気部品は、前記インバータ装置のパワーモジュールである。 In one aspect of the present invention, in the busbar positioning structure, the electrical device is an inverter device, one electrical component is a DC capacitor of the inverter device, and the other electrical component is a DC capacitor of the inverter device. Power module.
　本発明の一態様は、上記のバスバー位置決め構造を有する電気機器である。 One aspect of the present invention is an electrical device having the busbar positioning structure described above.
　以上の本発明によれば、バスバーの組み立て性の向上と共にインダクタンス並びにインピーダンスの低減を図ることができる。 According to the present invention described above, it is possible to improve the assemblability of the bus bar and reduce the inductance and impedance.
電気機器に適用された本発明の一態様であるバスバー位置決め構造の平面図。1 is a plan view of a busbar positioning structure that is one aspect of the present invention applied to electrical equipment; FIG. 図１のバスバーにハーネスが接続された状態の平面図。FIG. 2 is a plan view of a state in which a harness is connected to the busbar of FIG. 1; 図２の状態の縦断面図。FIG. 3 is a longitudinal sectional view of the state of FIG. 2; 図１のバスバーが接続されるパワーモジュールの基本回路図。FIG. 2 is a basic circuit diagram of a power module to which the busbar of FIG. 1 is connected;
　以下に図面を参照しながら本発明の実施形態について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
　図１に示された本発明の一態様であるバスバー位置決め構造１は、電気機器の一例であるインバータ装置２の筐体１０内の端子台３，４に適用される。 A busbar positioning structure 1 that is one aspect of the present invention shown in FIG. 1 is applied to terminal blocks 3 and 4 inside a housing 10 of an inverter device 2 that is an example of an electrical device.
　バスバー位置決め構造１は、バスバーＰが配置される一対の端子台３と、バスバーＮが配置される一対の端子台４と、この端子台３，４でのバスバーＰ，Ｎの配置を位置決めする位置決めピン５，６と、を有する。 A busbar positioning structure 1 includes a pair of terminal blocks 3 on which a busbar P is arranged, a pair of terminal blocks 4 on which a busbar N is arranged, and a positioning structure for positioning the arrangement of the busbars P and N on the terminal blocks 3 and 4. pins 5 and 6;
　（バスバーＰ）
　バスバーＰは、図２に示したように、ハーネス７の接続端子７１と、インバータ装置２の電気部品の一つである直流コンデンサＣのＰ極側の接続端子Ｃ１と、を接続する。尚、ハーネス７は、前記電気部品の一つである図４に示すスイッチング素子Ｓ１～Ｓ６を備えた回路を有するパワーモジュール１１のＰ極側端子に接続される。 (Busbar P)
As shown in FIG. 2 , the bus bar P connects the connection terminal 71 of the harness 7 and the connection terminal C1 on the P pole side of the DC capacitor C, which is one of the electrical components of the inverter device 2 . The harness 7 is connected to the P pole side terminal of a power module 11 having a circuit including switching elements S1 to S6 shown in FIG. 4, which is one of the electrical components.
　バスバーＰには、後述の一方の端子台３の位置決めピン５が挿入される挿入孔Ｐ１と、接続端子７１とパワーモジュール１１のＰ極側端子をバスバーＰと締結させる締結具９が挿通される第一締結孔Ｐ２と、接続端子Ｃ１をバスバーＰと締結させる締結具９が挿通される第二締結孔Ｐ３と、が形成されている。 Through the bus bar P are inserted an insertion hole P1 into which a positioning pin 5 of one terminal block 3 described later is inserted, and a fastener 9 for fastening the connection terminal 71 and the P pole side terminal of the power module 11 to the bus bar P. A first fastening hole P2 and a second fastening hole P3 through which a fastener 9 for fastening the connection terminal C1 to the bus bar P is inserted are formed.
　挿入孔Ｐ１は、同図のバスバーＰにおいて、直流コンデンサＣの接続端子Ｃ１との接続部（第二締結孔Ｐ３）とハーネス７の接続端子７１との接続部（第一締結孔Ｐ２）との距離よりも離れたバスバーＰの一端側の領域ａ１における任意の位置に配される。挿入孔Ｐ１の口径は第一締結孔Ｐ２，第二締結孔Ｐ３の口径よりも小さく設定される。尚、挿入孔Ｐ１は、挿入された位置決めピン５が突出しない範囲であれば貫通孔であってもよい。 The insertion hole P1 is a portion of the bus bar P shown in FIG. It is arranged at an arbitrary position in the area a1 on the one end side of the bus bar P that is more than the distance away. The diameter of the insertion hole P1 is set smaller than the diameters of the first fastening hole P2 and the second fastening hole P3. The insertion hole P1 may be a through hole as long as the inserted positioning pin 5 does not protrude.
　（バスバーＮ）
　バスバーＮは、パワーモジュール１１のＮ極側端子に接続されたハーネス８の接続端子８１と、直流コンデンサＣのＮ極側の接続端子Ｃ２と、を接続する。 (Busbar N)
The bus bar N connects the connection terminal 81 of the harness 8 connected to the N-pole side terminal of the power module 11 and the connection terminal C2 of the DC capacitor C on the N-pole side.
　バスバーＮには、後述の一方の端子台４の位置決めピン６が挿入される挿入孔Ｎ１と、接続端子８１とパワーモジュール１１のＮ極側端子をバスバーＮに締結させる締結具９が挿通される第一締結孔Ｎ２と、接続端子Ｃ２をバスバーＮと締結させる締結具９が挿通される第二締結孔Ｎ３と、が形成されている。 An insertion hole N1 into which a positioning pin 6 of one terminal block 4 described later is inserted, and a fastener 9 for fastening the connecting terminal 81 and the N pole side terminal of the power module 11 to the bus bar N are inserted through the bus bar N. A first fastening hole N2 and a second fastening hole N3 through which a fastener 9 for fastening the connection terminal C2 to the busbar N is inserted are formed.
　挿入孔Ｎ１は、同図のバスバーＮにおいて、直流コンデンサＣの接続端子Ｃ２との接続部（第二締結孔Ｎ３）とハーネス８の接続端子８１との接続部（第一締結孔Ｎ２）との距離よりも離れたバスバーＮの一端側の領域ａ２における任意の位置に配される。挿入孔Ｎ１の口径は第一締結孔Ｎ２，第二締結孔Ｎ３の口径よりも小さく設定される。挿入孔Ｎ１も、挿入孔Ｐ１と同様に、挿入された位置決めピン６が突出しない範囲であれば貫通孔であってもよい。 The insertion hole N1 is formed between the connecting portion (second fastening hole N3) of the DC capacitor C with the connecting terminal C2 and the connecting portion (first fastening hole N2) of the harness 8 with the connection terminal 81 in the bus bar N shown in FIG. It is arranged at an arbitrary position in the area a2 on the one end side of the bus bar N which is more than the distance away. The diameter of the insertion hole N1 is set smaller than the diameters of the first fastening hole N2 and the second fastening hole N3. Similarly to the insertion hole P1, the insertion hole N1 may be a through hole as long as the inserted positioning pin 6 does not protrude.
　（端子台３）
　一対の端子台３のうち図３に示された一方の端子台３は、筐体１０内に導入されたＰ極側のハーネス７の接続端子７１とパワーモジュール１１のＰ極側端子が接続される端子部３１を備える。端子部３１には、バスバーＰの第一締結孔Ｐ２に挿通された締結具９が螺着される締結孔３１０が形成されている。 (Terminal block 3)
One terminal block 3 of the pair of terminal blocks 3 shown in FIG. A terminal portion 31 is provided. The terminal portion 31 is formed with a fastening hole 310 into which the fastener 9 inserted through the first fastening hole P2 of the busbar P is screwed.
　前記一対の端子台３のうち他方の端子台３は、筐体１０内に配置された直流コンデンサＣの接続端子Ｃ１が接続される端子部３２を備える。端子部３２には、バスバーＰを介して接続端子Ｃ１を端子部３２に接続させる締結具９が螺着される締結孔３２０が形成されている。 The other terminal block 3 of the pair of terminal blocks 3 has a terminal portion 32 to which the connection terminal C1 of the DC capacitor C arranged inside the housing 10 is connected. The terminal portion 32 is formed with a fastening hole 320 into which the fastener 9 for connecting the connection terminal C1 to the terminal portion 32 via the busbar P is screwed.
　（端子台４）
　一対の端子台４のうち一方の端子台４は、前記一方の端子台３と並列に配置され、筐体１０内に導入されたＮ極側のハーネス８の接続端子８１とパワーモジュール１１のＮ極側端子が接続される端子部４１を備える。端子部４１には、バスバーＮの第一締結孔Ｎ２に挿通された締結具９が螺着される締結孔４１０が形成されている。 (Terminal block 4)
One terminal block 4 of the pair of terminal blocks 4 is arranged in parallel with the one terminal block 3 , and is connected to the connecting terminal 81 of the harness 8 on the N pole side introduced into the housing 10 and the N pole of the power module 11 . A terminal portion 41 to which a pole-side terminal is connected is provided. The terminal portion 41 is formed with a fastening hole 410 into which the fastener 9 inserted through the first fastening hole N2 of the busbar N is screwed.
　前記一対の端子台４のうち他方の端子台４は、前記他方の端子台３と並列に配置され、直流コンデンサＣの接続端子Ｃ２が接続される端子部４２を備える。端子部４２には、バスバーＮを介して接続端子Ｃ２を端子部４２に接続させる締結具９が螺着される締結孔４２０が形成されている。 The other terminal block 4 of the pair of terminal blocks 4 is arranged in parallel with the other terminal block 3 and has a terminal portion 42 to which the connection terminal C2 of the DC capacitor C is connected. The terminal portion 42 is formed with a fastening hole 420 into which the fastener 9 for connecting the connection terminal C2 to the terminal portion 42 via the busbar N is screwed.
　（位置決めピン５，６）
　位置決めピン５は、前記一方の端子台３において、バスバーＰの挿入孔Ｐ１に対応する位置に立設される。位置決めピン５の高さ及びバスバーＰの厚さは、バスバーＰの挿入孔Ｐ１から位置決めピン５が突出しないように設定される。 (Positioning pins 5, 6)
The positioning pin 5 is erected at a position corresponding to the insertion hole P1 of the bus bar P on the one terminal block 3 . The height of the positioning pin 5 and the thickness of the busbar P are set so that the positioning pin 5 does not protrude from the insertion hole P1 of the busbar P. As shown in FIG.
　位置決めピン６は、前記一方の端子台４において、バスバーＮの挿入孔Ｎ１に対応する位置に立設される。位置決めピン６の高さ及びバスバーＮの厚さは、バスバーＮの挿入孔Ｎ１から位置決めピン６が突出しないように設定される。 The positioning pin 6 is erected at a position corresponding to the insertion hole N1 of the busbar N on the one terminal block 4 . The height of the positioning pin 6 and the thickness of the busbar N are set so that the positioning pin 6 does not protrude from the insertion hole N1 of the busbar N.
　（インバータ装置２の組み立て手順）
　図１～３を参照してインバータ装置２の組み立て手順の一例について説明する。 (Assembling procedure of the inverter device 2)
An example of the procedure for assembling the inverter device 2 will be described with reference to FIGS.
　先ず、筐体１０内の一対の端子台３にバスバーＰが配置される。すなわち、図１,３のように一方の端子台３の位置決めピン５及び締結孔３１０にバスバーＰの挿入孔Ｐ１及び第一締結孔Ｐ２が各々会合してバスバーＰの一端側が当該一方の端子台３の端子部３１に配置される。このとき、バスバーＰの第二締結孔Ｐ３が他方の端子台３の締結孔３２０と会合してバスバーＰの他端側が端子台３の端子部３２に配置された状態となる。 First, the busbars P are arranged on the pair of terminal blocks 3 inside the housing 10 . That is, as shown in FIGS. 1 and 3, the insertion hole P1 and the first fastening hole P2 of the busbar P meet the positioning pin 5 and the fastening hole 310 of one terminal block 3, respectively, so that one end side of the busbar P is connected to the one terminal block. 3 is arranged in the terminal portion 31 of the . At this time, the second fastening hole P<b>3 of the busbar P meets the fastening hole 320 of the other terminal block 3 , and the other end of the busbar P is placed on the terminal portion 32 of the terminal block 3 .
　次いで、筐体１０内の一対の端子台４にバスバーＮが配置される。すなわち、図１のように一方の端子台４の位置決めピン６及び締結孔４１０にバスバーＮの挿入孔Ｎ１及び第一締結孔Ｎ２が各々会合してバスバーＮの一端側が当該一方の端子台４の端子部４１に配置される。このとき、バスバーＮの第二締結孔Ｎ３が他方の端子台４の締結孔４２０と会合してバスバーＰの他端側が端子台４の端子部４２に配置された状態となる。 Next, the busbars N are arranged on the pair of terminal blocks 4 inside the housing 10 . That is, as shown in FIG. 1, the insertion hole N1 and the first fastening hole N2 of the bus bar N meet the positioning pin 6 and the fastening hole 410 of one of the terminal blocks 4 so that one end of the bus bar N is connected to the one terminal block 4. It is arranged in the terminal portion 41 . At this time, the second fastening hole N3 of the busbar N meets the fastening hole 420 of the other terminal block 4, and the other end side of the busbar P is placed in the terminal portion 42 of the terminal block 4. As shown in FIG.
　次いで、筐体１０内に導入されたハーネス７，８の接続端子７１，８１が一方の端子台３，４の端子部３１，４１に各々配置される。また、直流コンデンサＣの接続端子Ｃ１，Ｃ２が他方の端子台３,４の端子部３２，４２に各々配置される。 Next, the connection terminals 71, 81 of the harnesses 7, 8 introduced into the housing 10 are arranged in the terminal portions 31, 41 of the one terminal blocks 3, 4, respectively. Connection terminals C1 and C2 of the DC capacitor C are arranged at terminal portions 32 and 42 of the other terminal blocks 3 and 4, respectively.
　そして、図２，３のようにハーネス７の接続端子７１及びバスバーＰの第一締結孔Ｐ２に挿通された締結具９が一方の端子台３における端子部３１の締結孔３１０に螺着される。また、直流コンデンサＣの接続端子Ｃ１及びバスバーＰの第二締結孔Ｐ３に挿通された締結具９が他方の端子台３における端子部３２の締結孔３２０に螺着される。 2 and 3, the fastener 9 inserted through the connecting terminal 71 of the harness 7 and the first fastening hole P2 of the bus bar P is screwed into the fastening hole 310 of the terminal portion 31 of the one terminal block 3. . Further, the fastener 9 inserted through the connecting terminal C1 of the DC capacitor C and the second fastening hole P3 of the bus bar P is screwed into the fastening hole 320 of the terminal portion 32 of the other terminal block 3 .
　同様に、ハーネス８の接続端子８１及びバスバーＮの第一締結孔Ｎ２に挿通された締結具９が一方の端子台４における端子部４１の締結孔４１０に螺着される。また、直流コンデンサＣの接続端子Ｃ２及びバスバーＮの第二締結孔Ｎ３に挿通された締結具９が他方の端子台４における端子部４２の締結孔４２０に螺着される。 Similarly, the connecting terminal 81 of the harness 8 and the fastener 9 inserted through the first fastening hole N2 of the busbar N are screwed into the fastening hole 410 of the terminal portion 41 of the one terminal block 4 . Further, the fastener 9 inserted through the connecting terminal C2 of the DC capacitor C and the second fastening hole N3 of the bus bar N is screwed into the fastening hole 420 of the terminal portion 42 of the other terminal block 4 .
　以上のように図２の筐体１０内の端子台３，４にバスバーＰ，Ｎが接続固定される。 As described above, the bus bars P, N are connected and fixed to the terminal blocks 3, 4 inside the housing 10 of FIG.
　（本実施形態の効果）
　図２に示されたインバータ装置２のバスバーＰ，Ｎにおいて、第一締結孔Ｐ２と第二締結孔Ｐ３を最短で結ぶ白矢印の経路、及び、第一締結孔Ｎ２と第二締結孔Ｎ３を最短で結ぶ白矢印の経路が、インバータ装置２の電流経路に相当し、最も電流密度が高くなる。一方、第二締結孔Ｐ３，Ｎ３から第一締結孔Ｐ２，Ｎ２までの距離よりも離れたバスバーＰ，Ｎの一端側の領域ａ１，ａ２にて、電流密度が低くなる。 (Effect of this embodiment)
In the busbars P and N of the inverter device 2 shown in FIG. The shortest path indicated by the white arrow corresponds to the current path of the inverter device 2 and has the highest current density. On the other hand, the current density is low in the regions a1, a2 on the one end sides of the bus bars P, N that are farther than the distance from the second fastening holes P3, N3 to the first fastening holes P2, N2.
　バスバー位置決め構造１によれば、領域ａ１，ａ２の任意の位置に端子台３，４の位置決めピン５，６が挿入される挿入孔Ｐ１，Ｎ１が形成されたことで、バスバーＰ，Ｎのインダクタンス及びインピーダンスの増加を低減できる。特に、挿入孔Ｐ１，Ｎ１の口径が第一締結孔Ｐ２，Ｎ２，第二締結孔Ｐ３，Ｎ３の口径よりも小さく設定されることで、バスバーＰ，Ｎのインダクタンス及びインピーダンスの増加をより低減できる。 According to the busbar positioning structure 1, since the insertion holes P1 and N1 into which the positioning pins 5 and 6 of the terminal blocks 3 and 4 are inserted are formed at arbitrary positions in the regions a1 and a2, the inductance of the busbars P and N is reduced. and the increase in impedance can be reduced. In particular, by setting the diameter of the insertion holes P1, N1 smaller than the diameters of the first fastening holes P2, N2 and the second fastening holes P3, N3, it is possible to further reduce increases in the inductance and impedance of the bus bars P, N. .
　また、図３のように、位置決めピン５，６が挿入孔Ｐ１，Ｎ１から突出しないようにバスバーＰ，Ｎの厚みまたは位置決めピン５，６の高さが調整されることで、前記基本回路及び直流コンデンサＣ以外の他の電気部品を位置決めピン５，６上に配置できるので、バスバーを必要以上に拡大する必要がなくなる。 Further, as shown in FIG. 3, the thickness of the bus bars P, N or the height of the positioning pins 5, 6 are adjusted so that the positioning pins 5, 6 do not protrude from the insertion holes P1, N1. Since electric parts other than the DC capacitor C can be arranged on the positioning pins 5 and 6, there is no need to enlarge the bus bar more than necessary.
　以上のように、バスバー位置決め構造１によれば、バスバーのインダクタンス値やインピーダンス値を極力大きくしない位置に位置決めピン５，６及び挿入孔Ｐ１，Ｎ１が設定されることで、バスバーＰ，Ｎの放電防止の縁面距離を確保しつつ容易に組み立てられる。 As described above, according to the busbar positioning structure 1, the positioning pins 5 and 6 and the insertion holes P1 and N1 are set at positions where the inductance value and impedance value of the busbar are not increased as much as possible. It is easy to assemble while securing the edge face distance of prevention.
　特に、挿入孔Ｐ１，Ｎ１を、接続ネジ端子部貫通孔を最短経路で結ぶ線よりもバスバーＰ，Ｎの端部側に設けることで、バスバーＰ，Ｎの組立性が向上する。また、バスバーＰ，Ｎのインダクタンス、インピーダンス、損失、発熱の増加を抑制できる。さらに、バスバーＰ，Ｎの低インダクタンス化によるスイッチング素子のサージ電圧が低減する。そして、バスバーＰ，Ｎの低インピーダンス化によるインバータ装置２の電力効率が向上する。 In particular, by providing the insertion holes P1, N1 closer to the ends of the bus bars P, N than the shortest line connecting the connection screw terminal through-holes, the bus bars P, N can be assembled more easily. Also, increases in the inductance, impedance, loss, and heat generation of the busbars P and N can be suppressed. Furthermore, the surge voltage of the switching element is reduced by reducing the inductance of the bus bars P and N. The power efficiency of the inverter device 2 is improved by lowering the impedance of the bus bars P and N.
　尚、本発明のバスバー位置決め構造は、バスバーを用いるインバータ装置以外の電気機器にも適用できる。例えば、直流コンデンサＣやスイッチング素子以外の電気部品間を接続する一般的なバスバーにおいても、バスバーＰ，Ｎと同様に、位置決めピンが挿入される孔を設けることで、インダクタンス及びインピーダンスの増加の低減を図ることができる。したがって、一般的なバスバーにおいても、電流の最短経路の線よりもバスバー端部側に位置決めピンが挿入される孔を備えることで、放電防止の縁面距離を確保した組み立てが容易となり、インピーダンスの増加を低減でき、電力の損失低効果が得られる。 The busbar positioning structure of the present invention can also be applied to electrical equipment other than inverter devices using busbars. For example, in general busbars that connect electrical parts other than DC capacitors C and switching elements, similar to busbars P and N, by providing holes into which positioning pins are inserted, the increase in inductance and impedance can be reduced. can be achieved. Therefore, even in a general busbar, by providing a hole into which the positioning pin is inserted on the end side of the busbar rather than the line of the shortest path of the current, it becomes easy to assemble while securing the distance between the edge surfaces to prevent discharge, and the impedance can be reduced. The increase can be reduced, and the power loss reduction effect can be obtained.

Claims (5)

  1. 　電気機器の二つの電気部品を接続するバスバーが配置される一対の端子台と、
    　一方の前記端子台に立設されて前記バスバーの配置を位置決めする位置決めピンと、
    を有し、
    　前記バスバーには、前記位置決めピンが挿入される挿入孔が形成され、
    　前記バスバーには、一方の前記電気部品の端子と当該バスバーを締結させる締結具が挿通される第一締結孔と、他方の前記電気部品の端子と当該バスバーを締結させる締結具が挿通される第二締結孔が形成され、
    　前記挿入孔は、前記バスバーにおいて、前記第一締結孔から前記第二締結孔までの距離よりも離れた当該バスバーの一端側の位置に配されたバスバー位置決め構造。     a pair of terminal blocks on which busbars for connecting two electrical components of an electrical device are arranged;
    a positioning pin erected on one of the terminal blocks for positioning the bus bar;
    has
    The bus bar is formed with an insertion hole into which the positioning pin is inserted,
    The busbar has a first fastening hole through which a fastener for fastening the terminal of one of the electrical components and the busbar is inserted, and a second fastening hole through which a fastener for fastening the terminal of the other electrical component and the busbar is inserted. Two fastening holes are formed,
    The insertion hole is a busbar positioning structure arranged at a position on the one end side of the busbar which is farther than the distance from the first fastening hole to the second fastening hole in the busbar.
  2. 　前記挿入孔の口径は、前記第一締結孔及び前記第二締結孔の口径よりも小さい請求項１に記載のバスバー位置決め構造。 The busbar positioning structure according to claim 1, wherein the diameter of the insertion hole is smaller than the diameters of the first fastening hole and the second fastening hole.
  3. 　前記挿入孔に挿入された前記位置決めピンは当該挿入孔から突出しない請求項１または２に記載のバスバー位置決め構造。 The busbar positioning structure according to claim 1 or 2, wherein the positioning pin inserted into the insertion hole does not protrude from the insertion hole.
  4. 　前記電気機器は、インバータ装置であり、
    　一方の前記電気部品は、前記インバータ装置の直流コンデンサであり、
    　他方の前記電気部品は、前記インバータ装置のパワーモジュールである請求項１から３のいずれか１項に記載のバスバー位置決め構造。     the electric device is an inverter device,
    one of the electrical components is a DC capacitor of the inverter device,
    The busbar positioning structure according to any one of claims 1 to 3, wherein the other electrical component is a power module of the inverter device.
  5. 　請求項１から４のいずれか１項に記載のバスバー位置決め構造を有する電気機器。 An electrical device having the busbar positioning structure according to any one of claims 1 to 4.
PCT/JP2022/031797 2021-11-10 2022-08-24 Busbar positioning structure and electrical apparatus WO2023084863A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365424A (en) * 1991-07-10 1994-11-15 Kenetech Windpower, Inc. High power laminated bus assembly for an electrical switching converter
JP2015023664A (en) * 2013-07-18 2015-02-02 株式会社豊田自動織機 Inverter device
JP2016100943A (en) * 2014-11-19 2016-05-30 株式会社ケーヒン Electric power conversion system
WO2018116606A1 (en) * 2016-12-22 2018-06-28 パナソニックＩｐマネジメント株式会社 Bus bar unit and motor drive device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6872911B2 (en) 2017-01-20 2021-05-19 株式会社クボタ Travel route generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365424A (en) * 1991-07-10 1994-11-15 Kenetech Windpower, Inc. High power laminated bus assembly for an electrical switching converter
JP2015023664A (en) * 2013-07-18 2015-02-02 株式会社豊田自動織機 Inverter device
JP2016100943A (en) * 2014-11-19 2016-05-30 株式会社ケーヒン Electric power conversion system
WO2018116606A1 (en) * 2016-12-22 2018-06-28 パナソニックＩｐマネジメント株式会社 Bus bar unit and motor drive device

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