WO2011093239A1 - 配電実装部品及びそれを用いたインバータ装置 - Google Patents
配電実装部品及びそれを用いたインバータ装置 Download PDFInfo
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- WO2011093239A1 WO2011093239A1 PCT/JP2011/051205 JP2011051205W WO2011093239A1 WO 2011093239 A1 WO2011093239 A1 WO 2011093239A1 JP 2011051205 W JP2011051205 W JP 2011051205W WO 2011093239 A1 WO2011093239 A1 WO 2011093239A1
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- conductive member
- insulating layer
- thickness
- power distribution
- bus bar
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
- H05K1/0265—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board characterized by the lay-out of or details of the printed conductors, e.g. reinforced conductors, redundant conductors, conductors having different cross-sections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/005—Laminated bus-bars
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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
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Definitions
- the present invention relates to a power distribution mounting component capable of handling a high voltage and an inverter device using the power distribution mounting component.
- the inverter device is applied to various electric devices such as a hybrid vehicle (HEV) and an electric vehicle (EV). From the viewpoint of environmental problems in recent years and the promotion of energy saving, the use of inverter devices in each of these applications is increasing year by year. In addition, these inverter devices are required to have high power, energy saving, and miniaturization, and higher voltages of internal circuits and higher density mounting of components are being promoted.
- HEV hybrid vehicle
- EV electric vehicle
- the inverter device mainly includes a power module incorporating a power semiconductor element (eg, an insulated gate bipolar transistor (IGBT)), a capacitor, a coil, and the like, and a power distribution mounting component for transmitting a large current in the device ( Often referred to as busbar or busbar).
- a power module incorporating a power semiconductor element (eg, an insulated gate bipolar transistor (IGBT)), a capacitor, a coil, and the like, and a power distribution mounting component for transmitting a large current in the device ( Often referred to as busbar or busbar).
- IGBT insulated gate bipolar transistor
- a conventional power distribution mounting component (hereinafter referred to as a bus bar) 112 includes an insulating layer 102 (for example, an insulating layer) between a plurality of thick conductors 100 made of metal (for example, copper or aluminum).
- the thick conductor 100 is insulated by inserting a board, insulating paper, or insulating film).
- an adhesive layer 103 is formed on at least one surface of the insulating layer 102, and the thick conductor 100 and the insulating layer 102 are bonded to each other through the adhesive layer 103.
- the thick conductors 100 are generally insulated (see, for example, Patent Document 1).
- the bus bar is required to have a low inductance, and the insulating layer inserted between the thick conductors has been made thinner.
- the thickness of an insulating layer between thick conductors of a bus bar used in a 400V class inverter device is about 300 ⁇ m.
- an object of the present invention is to provide a power distribution mounting component (bus bar) having both high withstand voltage and low inductance in order to achieve high power, energy saving, high efficiency, and downsizing of the inverter device. is there.
- Another object of the present invention is to provide a highly reliable inverter device having a long life by using the power distribution mounting component.
- the present invention is a high-voltage distribution mounting component, Provided on at least one surface of the insulating layer between the insulating layer, the plurality of first conductive members stacked and sandwiching the insulating layer and mainly responsible for power distribution, and the insulating layer and the first conductive member And a second conductive member, wherein the thickness of the second conductive member is thinner than the thickness of the first conductive member.
- the present invention is a high-voltage distribution mounting component, An insulating layer with an adhesive layer in which an adhesive layer is formed on at least one surface of the insulating layer, a plurality of first conductive members mainly sandwiching the insulating layer with the adhesive layer and mainly responsible for power distribution; and A second conductive member provided on at least one surface of the insulating layer with an adhesive layer between the insulating layer with an adhesive layer and the first conductive member, and the thickness of the second conductive member
- the distribution mounting component is characterized in that is thinner than the thickness of the first conductive member.
- the present invention provides a power module having a plurality of power semiconductor elements, a power distribution mounting component connected to the power module, and a control board on which a drive circuit for driving the switching operation of the power semiconductor is configured.
- An inverter device comprising: The power distribution mounting component includes an insulating layer, a plurality of first conductive members stacked and sandwiching the insulating layer and mainly responsible for power distribution, and at least the insulating layer between the insulating layer and the first conductive member.
- an inverter device comprising a second conductive member provided on one surface, wherein the thickness of the second conductive member is thinner than the thickness of the first conductive member.
- the present invention also includes a power module having a plurality of power semiconductor elements, a power distribution mounting component connected to the power module, and a control board on which a drive circuit for driving a switching operation of the power semiconductor is configured.
- An inverter device comprising: The power distribution mounting component includes an insulating layer with an adhesive layer in which an adhesive layer is provided on at least one surface of the insulating layer, and a plurality of first layers mainly sandwiching the insulating layer with the adhesive layer and mainly responsible for power distribution.
- the inverter device is characterized in that the thickness of the two conductive members is thinner than the thickness of the first conductive member.
- the present invention can add the following improvements and changes to the above-described power distribution mounting components (I) and (II) and the above inverter devices (III) and (IV) according to the present invention.
- the thickness of the second conductive member is in the range of 1 ⁇ m or more and less than 500 ⁇ m.
- the thickness of the first conductive member is in the range of 0.5 mm to 10 mm.
- the thickness of the second conductive member or the first conductive member means the length of the conductive member in the stacking direction.
- a large current flowing between the power modules is transmitted through the power distribution mounting component.
- the present invention it is possible to provide a power distribution mounting component having both high pressure resistance and low inductance.
- the power distribution mounting parts it is possible to contribute to high power, energy saving, high efficiency and downsizing of the inverter device, and to provide a highly reliable inverter device with a long life. it can.
- FIG. 1 It is a graph which shows the electrical charging deterioration lifetime test result in Example 1 and Comparative Example 1.
- FIG. It is a graph which shows the electric charging degradation lifetime test result in Example 2 and Comparative Example 2.
- Thick conductors used for bus bars are usually produced by punching a flat plate of a highly conductive metal (for example, copper) with a press or the like, and therefore there are minute surface irregularities such as warpage, distortion, and scratches. Inevitable. Therefore, when the thick conductor 100 is laminated with the insulating layer 102, a space (gap) 105 caused by the surface irregularities 106 is easily formed between the thick conductor 100 and the insulating layer 102.
- a space (gap) 105 caused by the surface irregularities 106 is easily formed between the thick conductor 100 and the insulating layer 102.
- the bus bars 112 and 113 having the thin insulating layer 102 as shown in FIGS. 10 and 11 are formed between the thick conductor 100 and the insulating layer 102 when a high voltage is applied between the thick conductors 100.
- the space (gap) 105 partial discharge due to the potential difference between the thick conductor 100 and the insulating layer 102 occurs. Then, it was found that the partial discharge generated causes the dielectric breakdown by gradually degrading the insulating layer 102.
- the space portion 105 is increased by increasing the thickness of the adhesive layer 103. It is conceivable to suppress the formation of. However, as described above, it is not preferable to increase the thickness of the adhesive layer 103 because it contradicts the requirement for low inductance.
- FIG. 12 is a schematic cross-sectional view when a conventional power distribution mounting component is bent into an L shape.
- the space 105 is enlarged by bending the thick conductor 100 at the corners of the L shape as shown in FIG. It has been found that the degradation of 102 tends to be greater.
- bus bar power distribution mounting component
- Second embodiment bus bar Comparison between the bus bar of the present invention and the bus bar of the conventional example 3-1
- Example 1 3-2 Example 2 3-3 Comparative Example 1 3-4 Comparative Example 2 3-5
- Results of comparative experiments 3-5-1 Partial discharge test 3-5-2 Electricity degradation life test
- FIG. 1 is a schematic cross-sectional view showing an example of a bus bar according to the first embodiment of the present invention.
- the bus bar 12 of the present embodiment includes an insulating layer 2, a pair of first conductive members 1 sandwiching the insulating layer 2 and mainly responsible for power distribution, the insulating layer 2,
- the second conductive member 4 is provided between the first conductive member 1 and the second conductive member 4.
- the insulating layer 2 is composed of insulating paper or insulating sheet processed into a film shape.
- insulating paper formed from cellulose such as wood, aramid paper formed from an aramid polymer, insulating paper formed from polyamide or the like can be used.
- An insulating sheet formed of a resin such as resin or polyphenylene sulfide can be used. Since the insulating layer 2 is intended to electrically insulate a plurality of conductors, it may be other than the above-mentioned types of insulating paper and insulating sheet as long as it has electrical insulation.
- the first conductive member 1 is laminated with the above-described film-like insulating layer 2 interposed therebetween.
- the first conductive member 1 is made of a metal material such as copper or aluminum, for example.
- the first conductive member 1 constitutes a thick conductor that serves as a main transmission path of the bus bar 12, and the thickness of the first conductive member 1 (the length in the stacking direction, the length in the vertical direction in the figure). ) Is preferably in the range of 0.5 mm to 10 mm.
- the first conductive member 1, which is a thick conductor, is preferably 0.5 mm or more in order to transmit a large current, and if it is thinner than that, a large current cannot flow.
- the bus bar 12 becomes larger, and as a result, the inverter device using the bus bar 12 becomes larger. If it is 10 mm or less, even if it is applied to an inverter device, a large current can be passed without problems in use, and therefore it is preferably 10 mm or less.
- the second conductive member 4 is provided on the surface of the insulating layer 2 adjacent to the first conductive member 1 and between the insulating layer 2 and the first conductive member 1. In the present embodiment, the second conductive member 4 is provided on both surfaces of the insulating layer 2. Similarly to the first conductive member 1, the second conductive member 4 is also made of a metal material such as copper or aluminum. Further, the second conductive member 4 is a conductor foil that suppresses the adverse effect of the space (gap) 5 between the first conductive member 1 and the insulating layer 2, which is a thick conductor constituting the main transmission path of the bus bar 12. And is configured to be thinner than the thickness of the first conductive member 1.
- the second conductive member 4 By forming the second conductive member 4 sufficiently thinner than the first conductive member 1, the second conductive member 4 can be formed in close contact with the insulating layer 2. That is, by forming the second conductive member 4 and the insulating layer 2 in close contact with each other, partial discharge due to a potential difference between the second conductive member 4 and the insulating layer 2 does not occur.
- first conductive member 1 and the second conductive member 4 are both made of a metal material and have the same potential, the first conductive member 1 and the second conductive member 4 are between the first conductive member 1 and the second conductive member 4. Even when the gap 5 caused by the surface irregularities 6 of the member 1 is formed, partial discharge does not occur in the gap 5. Thereby, deterioration of the insulating layer 2 can be prevented.
- the thickness (the length in the stacking direction, the length in the vertical direction in the figure) of the second conductive member 4 is preferably in the range of 1 ⁇ m or more and less than 500 ⁇ m.
- the thickness is smaller than 1 ⁇ m, when the second conductive member 4 is formed on the insulating layer 2, the second conductive member 4 becomes an island shape and a part that is not partially formed may be generated. It may be scratched and easily peeled off. If the second conductive member 4 is missing, a gap 5 is formed between the insulating layer 2 and the first conductive member 1 and partial discharge occurs. For this reason, it is preferable that the thickness of the 2nd electrically-conductive member 4 is 1 micrometer or more.
- the second conductive member 4 has a thickness of 500 ⁇ m or more
- the second conductive member 4 and the insulating layer 2 have the same reason as that for forming a space between the conventional thick conductor and the insulating layer. A space portion is formed between the two and a partial discharge occurs in the space portion.
- the thickness of the 2nd electrically-conductive member 4 is less than 500 micrometers.
- the insulating layer 2 and the second conductive member 4 are formed in close contact with each other, and therefore, between the first conductive member 1 and the insulating layer 2 that are thick conductors.
- the partial discharge generated in the step can be prevented, and the deterioration of the insulating layer 2 can be prevented.
- the 1st electrically-conductive member 1 used as a main transmission path can be formed in the same thickness as the past, it is also possible to transmit a large current.
- FIG. 2 is a schematic cross-sectional view when the bus bar according to the first embodiment of the present invention is bent into an L shape and used.
- the second conductive member 4 that is a foil conductor is curved in a state of being in close contact with the insulating layer 2 even when the bus bar 12 is curved. No space is formed between the insulating layer 2 and the insulating layer 2.
- the first conductive member 1 and the second conductive member 4 are the same. Because of the potential, partial discharge does not occur and the insulating layer 2 is not deteriorated.
- the insulation is provided. It is possible to prevent the layer 2 from deteriorating.
- the bus bar 12 of this embodiment is formed so that the second conductive member 4 that is a foil conductor is in close contact with the surface of the insulating layer 2, and the insulating layer 2 on which the second conductive member 4 is formed is a pair of first conductive members. It can be formed by sandwiching with the member 1.
- the second conductive member 4 made of copper foil or the like and the insulating layer 2 made of an insulating sheet or paper are tightly bonded by thermocompression bonding or the like. There is a way to do it.
- the second conductive member 4 may be formed by applying a conductive paint in which a conductive material such as metal fine powder or carbon black is dispersed in an organic resin and applying the conductive paint to the surface of the insulating layer 2.
- a conductive paint in which a conductive material such as metal fine powder or carbon black is dispersed in an organic resin
- the second conductive member 4 is formed in close contact with the insulating layer 2 to prevent the formation of a space portion that directly connects the insulating layer 2 and the main transmission conductor. Therefore, any of the above methods may be used as the manufacturing method, and the second conductive member 4 may be formed in close contact with the insulating layer 2 by a method other than the above.
- the second conductive member 4 is formed on both surfaces of the insulating layer 2, and the insulating layer 2 on which the second conductive member 4 is formed is used as the pair of first conductive members 1.
- the present invention is not limited to this. For example, even when the second conductive member 4 is formed on at least one surface of the insulating layer 2, it is possible to effectively reduce the deterioration of the insulating layer 2 as compared with a conventional bus bar.
- FIG. 3 is a schematic cross-sectional view showing an example of a bus bar according to the second embodiment of the present invention.
- the bus bar 13 of the present embodiment is laminated by sandwiching the insulating layer 7 with an adhesive layer in which the adhesive layer 3 is formed on the surface of the insulating layer 2 and the insulating layer 7 with the adhesive layer.
- the pair of first conductive members 1 and the second conductive member 4 provided between the insulating layer 7 with the adhesive layer and the first conductive member 1 are configured.
- the first conductive member 1 is laminated in a direction perpendicular to the surface on which the adhesive layer 3 is formed.
- the 1st conductive member 1, the 2nd conductive member 4, and the insulating layer 2 are set as the structure similar to the structure of 1st Embodiment.
- the adhesive layer 3 is a layer for bonding the second conductive member 4 formed between the insulating layer 2 and the first conductive member 1 to the insulating layer 2.
- the material constituting the adhesive layer 3 examples include an epoxy resin adhesive, a phenol resin adhesive, a silicone resin adhesive, an acrylic resin adhesive, a polyimide resin adhesive, a urethane resin adhesive, and the like. Can be used.
- the adhesive layer 3 is intended for adhesion between the insulating layer 2 made of insulating paper or an insulating sheet and a conductor (mainly the second conductive member 4). Other than the agent may be used.
- the second conductive member 4 is formed on the surface of the insulating layer 7 with the adhesive layer.
- the second conductive member 4 can be formed in close contact with the adhesive layer 3 by using a thin conductive foil as the second conductive member 4. Therefore, unlike the conventional bus bar, it is not necessary to form a thick adhesive layer in order to fill the space between the conductor and the insulating layer, and a low inductance can be achieved.
- the adhesive layer 3 is formed on both surfaces of the insulating layer 2.
- the present invention is not limited to this, and the adhesive layer 3 is formed only on one surface. May be.
- the second conductive member 4 is formed on both surfaces of the insulating layer 7 with the adhesive layer.
- the insulating layer 2 can be formed on at least one surface as compared with the conventional bus bar. It is possible to effectively reduce the deterioration of.
- FIG. 4 is a schematic cross-sectional view for explaining the recyclability of the bus bar according to the second embodiment.
- the bus bar 13 since no adhesive or the like is used between the first conductive member 1 and the second conductive member 4, the first conductive member 1 and the second conductive member that are thick conductors are used. Separation from the member 4 is easy, and the first conductive member 1 can be reused. That is, according to this embodiment, the bus bar 13 excellent in recyclability can be obtained. Moreover, about the recyclability, the same effect can be acquired also in the bus bar 12 according to the first embodiment.
- the second conductive member 4 formed on at least one surface of the insulating layer 2 or the insulating layer 7 with the adhesive layer 3 is the first conductive member. Since it is formed sufficiently thinner than the member 1, it can be formed in close contact with the insulating layer 2 or the insulating layer 7 with the adhesive layer 3. Since the gap 5 is not formed between the insulating layers 2 and 7 and the second conductive member 4, partial discharge does not occur and the insulating layers 2 and 7 are not deteriorated.
- Example 1 The bus bar of Example 1 corresponds to the bus bar 12 according to the first embodiment described above.
- the insulating layer 2 a polyimide sheet having a thickness of 0.25 mm was used.
- the second conductive member 4 a copper foil having a thickness of 35 ⁇ m was used.
- the first conductive member 1 a copper thick conductor having a thickness of 2 mm was used.
- the second conductive member 4 made of copper foil was formed on both surfaces of the polyimide sheet to be the insulating layer 2 by heat fusion.
- the both sides of the insulating layer 2 on which the second conductive member 4 was formed were sandwiched between the two first conductive members 1 to produce the bus bar of Example 1.
- Example 2 The bus bar of Example 2 corresponds to the bus bar 13 according to the second embodiment described above.
- the insulating layer 2 aramid insulating paper having a thickness of 0.25 mm was used.
- the adhesive layer 3 an epoxy resin adhesive was used.
- the second conductive member 4 a copper foil having a thickness of 35 ⁇ m was used.
- the first conductive member 1 an aluminum thick conductor with a thickness of 3 mm was used.
- an epoxy resin adhesive was formed on both sides of an aramid insulating paper to be the insulating layer 2 so as to have a coating thickness of about 30 ⁇ m, and an insulating layer 7 with an adhesive layer was formed.
- the second conductive member 4 made of copper foil was formed on the upper surface of the adhesive by a vacuum press.
- the bus bar of Example 2 was produced by sandwiching the insulating layer 7 with the adhesive layer on which the second conductive member 4 was formed between the two first conductive members 1.
- the bus bar of Comparative Example 1 corresponds to the conventional bus bar 112 shown in FIG.
- the thick conductor 100 a copper thick conductor having a thickness of 2 mm was used, and as the insulating layer 102, a polyimide sheet having a thickness of 0.25 mm was used.
- the bus bar of Comparative Example 1 was manufactured by directly sandwiching the insulating layer 102 between the two thick conductors 100.
- the bus bar of Comparative Example 2 corresponds to the conventional bus bar 113 shown in FIG.
- the thick conductor 100 an aluminum thick conductor having a thickness of 3 mm was used, and as the insulating layer 102, an aramid insulating paper having a thickness of 0.25 mm was used.
- the adhesive layer 103 an epoxy resin adhesive was used.
- an insulating layer 104 with an adhesive layer was formed by forming an epoxy resin adhesive on both surfaces of an insulating layer 102 made of aramid insulating paper so as to have a coating thickness of about 30 ⁇ m. Then, the bus bar of the comparative example 2 was produced by arrange
- FIG. 5 is a chart showing partial discharge test results in Example 1 and Comparative Example 1.
- FIG. 6 is a chart showing partial discharge test results in Example 2 and Comparative Example 2. 5 and 6, the horizontal axis represents voltage (Vrms), and the vertical axis represents discharge charge amount (pC).
- the partial discharge start voltage (hereinafter referred to as PDIV) of the bus bar of Example 1 using the insulating layer without forming the adhesive layer was 1260V, and the partial discharge extinction voltage (hereinafter referred to as PDEV) was 1120V. .
- PDIV of the bus bar of Comparative Example 1 using an insulating layer that does not form an adhesive layer was 600V and PDEV was 480V. In Example 1, it was confirmed that the partial discharge start voltage and the partial discharge extinction voltage were higher than those in Comparative Example 1.
- the bus bar of Example 2 using the insulating layer with the adhesive layer had a PDIV of 1560V and a PDEV of 1460V.
- PDIV of the comparative example 2 using the insulating layer with an adhesive bond layer was 840V, and PDEV was 720V.
- Example 2 it was confirmed that the partial discharge start voltage and the partial discharge extinction voltage were higher than those in Comparative Example 2.
- FIG. 7 is a graph showing the results of the electrical degradation life test in Example 1 and Comparative Example 1.
- FIG. 8 is a graph showing the results of the electrical degradation life test in Example 2 and Comparative Example 2.
- shaft shows a test voltage (kV) and a horizontal axis shows time (h).
- Example 1 As shown in FIG. 7, it was confirmed that the electrical charging deterioration life of the bus bar of Example 1 was about 10 times longer than that of the bus bar of Comparative Example 1. Further, as shown in FIG. 8, it was confirmed that the power generation deterioration life of the bus bar of Example 2 was about 8 degrees longer than that of the bus bar of Comparative Example 2. It can be said that both Example 1 and Example 2 have a longer electrical degradation life and higher insulation reliability than Comparative Example 1 and Comparative Example 2, respectively.
- the bus bar of the present invention can reduce deterioration of the insulating layer due to partial discharge as compared with the conventional bus bar, and can obtain a high-voltage component having a high partial discharge start voltage and high insulation reliability. It was proved.
- FIG. 9 is a schematic cross-sectional view showing an example of an inverter device according to the third embodiment of the present invention.
- the inverter device 18 of the present embodiment uses the bus bar 12 according to the first embodiment.
- the inverter device 18 of the present embodiment is provided with a plurality of power modules 15, a bus bar 12 that electrically connects the power modules 15, and a drive circuit for controlling the power modules 15.
- the control board 14 is arranged in the housing 11.
- the power module 15 has a plurality of power semiconductor elements therein and is disposed on the module heat dissipation plate 16 in the housing 11.
- the electrode connected to the positive electrode of the DC input power source of the power module 15 is fixed to the positive electrode side first conductive member 1 a of the pair of first conductive members 1 constituting the bus bar 12 by a fixing screw 17. .
- the electrode connected to the negative electrode of the DC input power source of the power module 15 is fixed to the negative electrode side first conductive member 1 b of the pair of first conductive members 1 constituting the bus bar 12 by a fixing screw 17. .
- the control board 14 controls the switching operation of the power semiconductor element built in the power module 15.
- the bus bar 12 that transmits a large current
- the occurrence of partial discharge is prevented and the deterioration of the insulating layer 2 is reduced, so that the long-term reliability of the inverter device 18 can also be improved. In other words, the life of the inverter device 18 is extended.
- the bus bar 13 which concerns on 2nd Embodiment may be used and the same effect can be acquired. .
- bus bar A highly efficient power distribution component (bus bar) can be obtained. Further, by using the bus bar, an inverter device having a long life can be obtained. Furthermore, according to the present invention, it is possible to obtain a bus bar that can easily separate a thick conductor and an insulating layer and is excellent in recyclability, and an inverter device using the bus bar.
- SYMBOLS 1 ... 1st electrically-conductive member, 2 ... Insulating layer, 3 ... Adhesive layer, 4 ... 2nd electrically-conductive member, 5 ... Space part (gap part), 6 ... Surface uneven
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Abstract
Description
絶縁層と、前記絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、前記絶縁層と前記第1導電部材との間で前記絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とする配電実装部品を提供する。
絶縁層の少なくとも一方の面に接着剤層が形成された接着剤層付き絶縁層と、前記接着剤層付き絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、前記接着剤層付き絶縁層と前記第1導電部材との間で前記接着剤層付き絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とする配電実装部品を提供する。
前記配電実装部品は、絶縁層と、前記絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、前記絶縁層と前記第1導電部材との間で前記絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とするインバータ装置を提供する。
前記配電実装部品は、絶縁層の少なくとも一方の面に接着剤層が設けられた接着剤層付き絶縁層と、前記接着剤層付き絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、前記接着剤層付き絶縁層と前記第1導電部材との間で前記接着剤層付き絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とするインバータ装置を提供する。
(i)前記第2導電部材の厚さが、1μm以上500μm未満の範囲である。
(ii)前記第1導電部材の厚さが、0.5mm以上10mm以下の範囲である。
本発明者等は、発明に先立って、従来の配電実装部品(図10,11参照)に高電圧を印加した場合の絶縁破壊の原因について鋭意検討した。その結果、絶縁層の絶縁破壊には以下のような原因があることが判った。
1.第1の実施形態:バスバー
2.第2の実施形態:バスバー
3.本発明のバスバーと従来例のバスバーとの比較
3-1 実施例1
3-2 実施例2
3-3 比較例1
3-4 比較例2
3-5 比較実験結果
3-5-1 部分放電試験
3-5-2 課電劣化寿命試験
4.第3の実施形態:インバータ装置。
図1は、本発明の第1の実施形態に係るバスバーの例を示す断面模式図である。図1に示したように、本実施形態のバスバー12は、絶縁層2と、絶縁層2を挟持して積層され配電を主に担う1対の第1導電部材1と、絶縁層2と第1導電部材1との間に設けられた第2導電部材4とから構成されている。
図3は、本発明の第2の実施形態に係るバスバーの例を示す断面模式図である。図3に示すように、本実施形態のバスバー13は、絶縁層2の表面に接着剤層3が形成された接着剤層付き絶縁層7と、接着剤層付き絶縁層7を挟持して積層された1対の第1導電部材1と、接着剤層付き絶縁層7と第1導電部材1との間に設けられた第2導電部材4とから構成されている。
次に、本発明の第1の実施形態及び第2の実施形態に係るバスバー(実施例)と、従来のバスバー(比較例)とを用いた比較試験について、図5~図8を用いて説明する。
実施例1のバスバーは、上述した第1の実施形態に係るバスバー12に対応するものである。絶縁層2としては、厚さ0.25mmのポリイミドシートを用いた。また、第2導電部材4としては、厚さ35μmの銅箔を用いた。また、第1導電部材1としては、厚さ2mmの銅製厚肉導体を用いた。
実施例2のバスバーは、上述した第2の実施形態に係るバスバー13に対応するものである。絶縁層2としては、厚さ0.25mmのアラミド絶縁紙を用いた。また、接着剤層3としては、エポキシ樹脂系接着剤を用いた。また、第2導電部材4としては、厚さ35μmの銅箔を用いた。また、第1導電部材1としては、厚さ3mmのアルミニウム製厚肉導体を用いた。
比較例1のバスバーは、図10に示した従来のバスバー112に対応するものである。厚肉導体100としては、厚さ2mmの銅製厚肉導体を用い、絶縁層102としては、厚さ0.25mmのポリイミドシートを用いた。絶縁層102を2枚の厚肉導体100で直接挟持することで、比較例1のバスバーを作製した。
比較例2のバスバーは、図11に示した従来のバスバー113に対応するものである。厚肉導体100としては、厚さ3mmのアルミニウム製厚肉導体を用い、絶縁層102としては、厚さ0.25mmのアラミド絶縁紙を用いた。また、接着剤層103としては、エポキシ樹脂系接着剤を用いた。
実施例1,2及び比較例1,2に対し、本発明の効果を検証するために、下記の部分放電試験と課電劣化寿命試験を実施した。
実施例1,2及び比較例1,2の各試験用バスバーを、外来ノイズによる部分放電測定への影響を防止するためシールドルーム内に置き、部分放電開始電圧を測定した。ここでは、部分放電測定システムを用いて、試験用バスバーの厚肉導体間に、交流電圧を0Vから印加し、電圧を100V/秒の速度で上昇させ、部分放電が開始する電圧を測定した。ここで、部分放電開始の閾値は、2pCとした。
実施例1,2及び比較例1,2の各試験用バスバーを125℃の恒温層内に置き、各試験用バスバーの厚肉導体(実施例1、2では第1導電部材に相当)間に50Hz商用周波電圧を印加し、絶縁破壊するまでの時間を計測した。
次に、本発明に係るインバータ装置について説明する。図9は、本発明の第3の実施形態に係るインバータ装置の例を示す断面模式図である。本実施形態のインバータ装置18は、第1の実施形態に係るバスバー12を用いたものである。
Claims (12)
- 高電圧の配電実装部品であって、
絶縁層と、
前記絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、
前記絶縁層と前記第1導電部材との間で前記絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、
前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とする配電実装部品。 - 請求項1に記載の配電実装部品において、
前記第2導電部材の厚さが、1μm以上500μm未満の範囲であることを特徴とする配電実装部品。 - 請求項1又は請求項2に記載の配電実装部品において、
前記第1導電部材の厚さが、0.5mm以上10mm以下の範囲であることを特徴とする配電実装部品。 - 高電圧の配電実装部品であって、
絶縁層の少なくとも一方の面に接着剤層が設けられた接着剤層付き絶縁層と、
前記接着剤層付き絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、
前記接着剤層付き絶縁層と前記第1導電部材との間で前記接着剤層付き絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、
前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とする配電実装部品。 - 請求項4に記載の配電実装部品において、
前記第2導電部材の厚さが、1μm以上500μm未満の範囲であることを特徴とする配電実装部品。 - 請求項4又は請求項5に記載の配電実装部品において、
前記第1導電部材の厚さが、0.5mm以上10mm以下の範囲であることを特徴とする配電実装部品。 - 複数のパワー半導体素子を有するパワーモジュールと、
前記パワーモジュールに接続される配電実装部品と、
前記パワー半導体のスイッチング動作を駆動する駆動回路が構成された制御基板とを有するインバータ装置であって、
前記配電実装部品は、絶縁層と、前記絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、前記絶縁層と前記第1導電部材との間で前記絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、
前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とするインバータ装置。 - 請求項7に記載のインバータ装置において、
前記第2導電部材の厚さが、1μm以上500μm未満の範囲であることを特徴とするインバータ装置。 - 請求項7又は請求項8に記載のインバータ装置において、
前記第1導電部材の厚さが、0.5mm以上10mm以下の範囲であることを特徴とするインバータ装置。 - 複数のパワー半導体素子を有するパワーモジュールと、
前記パワーモジュールに接続される配電実装部品と、
前記パワー半導体のスイッチング動作を駆動する駆動回路が構成された制御基板とを有するインバータ装置であって、
前記配電実装部品は、絶縁層の少なくとも一方の面に接着剤層が設けられた接着剤層付き絶縁層と、前記接着剤層付き絶縁層を挟持して積層され配電を主に担う複数の第1導電部材と、前記接着剤層付き絶縁層と前記第1導電部材との間で前記接着剤層付き絶縁層の少なくとも一方の面上に設けられた第2導電部材とを具備し、
前記第2導電部材の厚さが前記第1導電部材の厚さよりも薄いことを特徴とするインバータ装置。 - 請求項10に記載のインバータ装置において、
前記第2導電部材の厚さが、1μm以上500μm未満の範囲であることを特徴とするインバータ装置。 - 請求項10又は請求項11に記載のインバータ装置において、
前記第1導電部材の厚さが、0.5mm以上10mm以下の範囲であることを特徴とするインバータ装置。
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US13/575,554 US9137888B2 (en) | 2010-01-27 | 2011-01-24 | Power distribution mounting component and inverter apparatus using same |
CN201180007510.6A CN102725931B (zh) | 2010-01-27 | 2011-01-24 | 配电安装部件及使用配电安装部件的逆变器装置 |
JP2011551840A JP5437397B2 (ja) | 2010-01-27 | 2011-01-24 | 配電実装部品及びそれを用いたインバータ装置 |
EP11736952.0A EP2530823B1 (en) | 2010-01-27 | 2011-01-24 | Power distribution mounting component and inverter apparatus using same |
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JP5437397B2 (ja) | 2014-03-12 |
EP2530823A1 (en) | 2012-12-05 |
EP2530823B1 (en) | 2018-03-14 |
US9137888B2 (en) | 2015-09-15 |
CN102725931B (zh) | 2015-12-09 |
EP2530823A4 (en) | 2014-04-16 |
CN102725931A (zh) | 2012-10-10 |
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US20120300417A1 (en) | 2012-11-29 |
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