WO2014141558A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
- Publication number
- WO2014141558A1 WO2014141558A1 PCT/JP2013/083813 JP2013083813W WO2014141558A1 WO 2014141558 A1 WO2014141558 A1 WO 2014141558A1 JP 2013083813 W JP2013083813 W JP 2013083813W WO 2014141558 A1 WO2014141558 A1 WO 2014141558A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bus bar
- flow path
- terminal
- power semiconductor
- module
- Prior art date
Links
Images
Classifications
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
- H05K5/006—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by features for holding the PCB within the housing
-
- 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
-
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
Definitions
- the present invention relates to a power converter used for converting DC power into AC power or converting AC power into DC power, and more particularly to a power converter used in a hybrid vehicle or an electric vehicle.
- a power conversion device includes an inverter circuit that receives DC power and generates AC power, and a control circuit for controlling the inverter circuit.
- miniaturization of power conversion devices has been demanded.
- the operating time and operating conditions (high output torque conditions) of the motor used as the drive source tend to be expanded, and the improvement of the reliability of the power converter is also demanded at the same time.
- Patent Document 1 Japanese Patent Laid-Open No. 2011-13481
- Patent Document 2 Japanese Patent Laid-Open No. 2011-172401.
- An object of the present invention is to further improve the connection reliability of internal components of a power converter.
- a power conversion device is connected to a power semiconductor module that converts a direct current into an alternating current, a housing that forms a storage space for storing the power semiconductor module, and an AC terminal of the power semiconductor module by fusion connection.
- An AC relay bus bar and an AC terminal block connected to the AC terminal of the motor, the AC relay bus bar being supported by the casing via an insulating member, and the AC terminal block being the AC relay It is connected to the bus bar and supported by the housing.
- FIG. 5 is a view of the flow path forming body 12 shown in FIG. 4 as viewed from the bottom side in order to explain the flow path forming body 12. It is a perspective view which shows the external appearance of the power semiconductor module 300a. It is sectional drawing of the power semiconductor module 300a. It is a perspective view which shows the external appearance of the power semiconductor module 300a.
- FIG. 5 is a cross-sectional view taken along a section D and viewed from the direction E, as in FIG.
- FIG. 6 is a perspective view showing a power semiconductor module 300a in which a module case 304 is further removed from the state shown in FIG.
- FIG. 6B is a cross-sectional view taken along the section D and viewed from the direction E as in FIGS. 4B and 5B.
- FIG. 7 is a perspective view of a power semiconductor module 300a in which the first sealing resin 348 and the wiring insulating portion 608 are further removed from the state shown in FIG. It is a figure for demonstrating the assembly process of the module primary sealing body 302.
- FIG. 4 is a perspective view of a capacitor module 500.
- FIG. 4 is an exploded perspective view for explaining an internal structure of a capacitor module 500.
- disconnected by the AA surface of FIG. 7 is an exploded perspective view of the driver circuit board 22, the metal base plate 11, and the AC terminal blocks 760 and 761 with the lid 8 and the control circuit board 20 removed.
- disconnected by the FF surface of FIG. 5 is a perspective view of an AC side relay conductor 802.
- FIG. 11 is a perspective view showing an appearance of an AC terminal block 760. It is a perspective view showing the appearance of AC relay bus bar 750.
- FIG. 6 is a perspective view in which the lid 8, the control circuit board 20, the metal base plate 11, the driver circuit board 22, and the AC terminal blocks 760 and 761 are removed in order to explain the welding connection portions of the power semiconductor modules 300a to 300c and 301a to 301c. is there.
- the power conversion device 200 according to the present embodiment is mainly used for a hybrid vehicle and an electric vehicle.
- An example of the vehicle system is described in Japanese Patent Application Laid-Open No. 2011-217550.
- the power converter device 100 which concerns on this embodiment may be used for another use in order to achieve the effect.
- it may be used for a home appliance inverter of a refrigerator or an air conditioner for the purpose of improving productivity and cooling performance.
- the inverter may be used for an inverter for industrial equipment whose use environment is similar to that for a vehicle inverter.
- FIG. 1 shows an exploded perspective view of a power conversion device 200 as an embodiment according to the present invention.
- FIG. 2 is an exploded perspective view disassembled to help understand the configuration housed in the flow path forming body 12 of the power conversion device 200.
- the power conversion device 200 has a flow path forming body 12 that functions as a case for housing power semiconductor modules 300a to 300c and power semiconductor modules 301a to 301c and a capacitor module 500, which will be described later, and forms a flow path, and a lid 8. .
- a case body may be provided separately from the flow path forming body 12 of the present embodiment, and the flow path forming body 12 may be housed in the case.
- the lid 8 accommodates circuit components constituting the power conversion device 200 and is fixed to the flow path forming body 12.
- a control circuit board 20 on which a control circuit is mounted is disposed on the inside of the lid 8.
- a first opening 202, a third opening 204 a, a fourth opening 204 b, and a fifth opening 205 are provided on the upper surface of the lid 8. Further, a second opening 203 is provided on the side wall of the lid 8.
- the connector 21 is provided on the control circuit board 20 and protrudes to the outside through the first opening 202.
- the negative electrode side power line 510 and the positive electrode side power line 512 electrically connect the DC connector 138 and the capacitor module 500 and the like, and project outside through the third opening 203.
- the AC terminal block 760 is connected to the power semiconductor modules 300a to 300c via the AC relay bus bar 750 and protrudes to the outside via the third opening 204a.
- the AC terminal block 761 is connected to the power semiconductor modules 301a to 301c via the AC relay bus bar 751 and protrudes to the outside via the fourth opening 204b.
- the AC output terminal 352 of the auxiliary power module 350 protrudes to the outside through the fifth opening 205.
- the direction of the mating surface of the terminal of the connector 21 and the like varies depending on the vehicle type. However, especially when trying to mount on a small vehicle, the mating surface is directed upward from the viewpoint of the size restriction in the engine room and the assembling property. It is preferable to take out. For example, when the power conversion device 200 is disposed above the transmission TM, the workability is improved by projecting toward the opposite side of the transmission TM.
- the lid 8 is made of metal and functions as a case for housing the power semiconductor modules 300a to 300c and 301a to 301c, the driver circuit board 22, the control circuit board 20, and the metal base plate 11.
- the connector 21 protrudes from the storage space of the lid 8 to the outside of the lid 8 through the first opening 202.
- the control circuit board 20 on which the connector 21 is mounted is mounted on the base plate 11, even if a physical force is applied to the connector 21 from the outside, the load on the control circuit board 20 can be suppressed. Therefore, improvement in reliability including durability can be expected.
- the flow path forming body 12 forms openings 400a to 400c and openings 402a to 402c connected to the flow path through which the cooling refrigerant flows.
- the openings 400a to 400c are closed by the inserted power semiconductor modules 300a to 300c, and the openings 402d to 402f are closed by the inserted power semiconductor modules 301a to 301c.
- a storage space 405 for storing the capacitor module 500 is formed in a side portion of a space in which the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c are stored.
- the circuit constants of the smoothing capacitor and the power semiconductor module circuit are easily balanced in each of the three phases.
- the circuit configuration can easily reduce the spike voltage.
- the flow path can increase the mechanical strength in addition to the cooling effect. Moreover, by making it by aluminum casting, the flow path forming body 12 and the flow path have an integral structure, heat conduction is improved, and cooling efficiency is improved.
- the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c are fixed to the flow channel to complete the flow channel, and a water leak test is performed on the water channel. When the water leakage test is passed, the work of attaching the capacitor module 500, the auxiliary power module 350, and the substrate can be performed next.
- the flow path forming body 12 is disposed at the bottom of the power conversion device 200, and then the work of fixing necessary components such as the capacitor module 500, the auxiliary power module 350, and the substrate can be sequentially performed from the top. Constructed, productivity and reliability are improved.
- the driver circuit board 22 is disposed above the power semiconductor modules 300a to 300c, the power semiconductor modules 301a to 301c, and the capacitor module 500.
- a base plate 11 is disposed between the driver circuit board 22 and the control circuit board 20.
- the metal base plate 11 functions as an electromagnetic shield for a circuit group mounted on the driver circuit board 22 and the control circuit board 20, and also releases and cools heat generated by the driver circuit board 22 and the control circuit board 20. Have.
- the control circuit board 20 acts to increase the mechanical resonance frequency of the control circuit board 20. That is, it is possible to dispose screwing portions for fixing the control circuit board 20 to the base plate 11 at short intervals, shorten the distance between the support points when mechanical vibration occurs, and increase the resonance frequency. it can. For example, since the resonance frequency of the control circuit board 20 can be increased with respect to the vibration frequency transmitted from the transmission, it is difficult to be affected by vibration and the reliability is improved.
- FIG. 3 is an explanatory diagram for explaining the flow path forming body 12, and is a view of the flow path forming body 12 shown in FIG. 2 as viewed from below.
- the flow path forming body 12 is provided with an inlet pipe 13 and an outlet pipe 14 on one side wall 12a.
- the cooling refrigerant flows in the direction of the flow direction 417 indicated by the dotted line, and flows through the first flow path portion 19 a formed along one side of the flow path forming body 12 through the inlet pipe 13.
- the second flow path portion 19b is connected to the first flow path portion 19a via the folded flow path portion, and is formed in parallel with the first flow path portion 19a.
- the third flow path portion 19c is connected to the second flow path portion 19b through the folded flow path portion, and is formed in parallel with the second flow path portion 19b.
- the fourth flow path portion 19d is connected to the third flow path portion 19c via the folded flow path portion, and is formed in parallel with the third flow path portion 19c.
- the fifth flow path portion 19e is connected to the fourth flow path portion 19d through the folded flow path portion, and is formed in parallel with the fourth flow path portion 19d.
- the sixth flow path portion 19f is connected to the fifth flow path portion 19e via the folded flow path portion, and is formed in parallel with the fifth flow path portion 19e. That is, the first flow path portion 19a to the sixth flow path portion 19f form a meandering flow path connected to one.
- the first flow path forming body 441 includes a first flow path section 19a, a second flow path section 19b, a third flow path section 19c, a fourth flow path section 19d, a fifth flow path section 19e, and a sixth flow path section 19f.
- the first channel portion 19a, the second channel portion 19b, the third channel portion 19c, the fourth channel portion 19d, the fifth channel portion 19e, and the sixth channel portion 19f are all deeper than the width direction. The direction is formed large.
- the seventh flow path portion 19g is connected to the sixth flow path portion 19f, and is formed at a position facing the storage space 405 of the capacitor module 500 shown in FIG.
- the second flow path forming body 442 forms the seventh flow path portion 19g and a ninth flow path portion 19i described later.
- the seventh flow path portion 19g is formed so that the width direction is larger than the depth direction.
- the eighth flow path portion 19h is connected to the seventh flow path portion 19g, and is formed at a position facing an auxiliary power module 350 described later.
- the eighth flow path portion 19h is connected to the ninth flow path portion 19i.
- the third flow path forming body 444 forms the eighth flow path portion 19h.
- the eighth flow path portion 19h is formed so that the depth direction is larger than the width direction.
- the ninth flow path portion 19i is formed at a position facing the storage space 405 of the capacitor module 500, similarly to the seventh flow path portion 19g. Further, the ninth flow path portion 19 i is connected to the outlet pipe 14.
- An opening 404 connected to one is formed on the lower surface of the flow path forming body 12.
- the opening 404 is closed by the lower cover 420.
- a seal member 409 is provided between the lower cover 420 and the flow path forming body 12 to maintain airtightness.
- the lower cover 420 is formed with convex portions 406a to 406f protruding in a direction away from the flow path forming body 12.
- the convex portions 406a to 406f are provided corresponding to the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c. That is, the convex portion 406a is formed to face the first flow path portion 19a.
- the convex part 406b is formed to face the second flow path part 19b.
- the convex part 406c is formed to face the third flow path part 19c.
- the convex portion 406d is formed to face the fourth flow path portion 19d.
- the convex part 406e is formed to face the fifth flow path part 19e.
- the convex portion 406f is formed to face the sixth flow path portion 19f.
- the depth and width of the seventh flow path portion 19g vary greatly from the depth and width of the sixth flow path portion 19f. Further, the ninth flow path portion 19i changes greatly from the depth and width of the eighth flow path portion 19h.
- the second flow path forming body 442 has straight fins protruding into the seventh flow path portion 19g and the ninth flow path portion 19i so that the flow medium can be rectified and the flow rate can be controlled by changing the large flow path shape. (Not shown) is preferably provided.
- the depth and width of the eighth flow path portion 19h vary greatly from the depth and width of the seventh flow path portion 19g.
- the third flow path forming body 444 is provided with straight fins (not shown) protruding into the eighth flow path portion 19h so that the flow medium can be rectified and the flow rate can be controlled by changing the large flow path shape. Is preferred. However, this is not the case when there is no problem in the rectification of the cooling refrigerant and the management of the flow velocity.
- the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c used in the inverter circuit will be described with reference to FIGS.
- the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c all have the same structure, and the structure of the power semiconductor module 300a will be described as a representative.
- FIG. 4A is a perspective view of the power semiconductor module 300a of the present embodiment.
- FIG. 4B is a cross-sectional view of the power semiconductor module 300a according to the present embodiment cut along a cross section D and viewed from the direction E.
- FIG. 5 is a diagram showing the power semiconductor module 300a in which the screw 309 and the second sealing resin 351 are removed from the state shown in FIG.
- FIG. 5A is a perspective view
- FIG. 5B is a cross-sectional view when viewed from the direction E cut along the cross-section D in the same manner as FIG. 4B.
- FIG. 5C shows a cross-sectional view before the fin 305 is pressed and the thin portion 304A is deformed.
- FIG. 6 is a diagram showing a power semiconductor module 300a in which the module case 304 is further removed from the state shown in FIG. 6 (a) is a perspective view
- FIG. 6 (b) is a cross-sectional view taken along the section D and viewed from the direction E as in FIGS. 4 (b) and 5 (b).
- FIG. 7 is a perspective view of the power semiconductor module 300a in which the first sealing resin 348 and the wiring insulating portion 608 are further removed from the state shown in FIG.
- FIG. 8 is a view for explaining an assembly process of the module primary sealing body 302.
- the power semiconductor elements (IGBT 328, IGBT 330, diode 156, diode 166) constituting the series circuit of the upper and lower arms are connected by the conductor plate 315 or the conductor plate 318, or by the conductor plate 320 or the conductor plate 319. Therefore, it is fixed by being sandwiched from both sides.
- the conductor plate 315 and the like are sealed with the first sealing resin 348 with the heat dissipation surface exposed, and the insulating member 333 is thermocompression bonded to the heat dissipation surface.
- the first sealing resin 348 has a polyhedral shape (here, a substantially rectangular parallelepiped shape).
- the module primary sealing body 302 sealed with the first sealing resin 348 is inserted into the module case 304 and sandwiched between the insulating members 333, and is thermocompression bonded to the inner surface of the module case 304 that is a CAN type cooler.
- the CAN-type cooler is a cylindrical cooler having an insertion port 306 on one surface and a bottom on the other surface.
- the space remaining inside the module case 304 is filled with the second sealing resin 351.
- the module case 304 is made of a member having electrical conductivity, for example, an aluminum alloy material (Al, AlSi, AlSiC, Al—C, etc.).
- the insertion port 306 is surrounded by the flange 304B. Further, as shown in FIG. 4 (a), the first heat radiating surface 307A and the second heat radiating surface 307B, which are wider than the other surfaces, are arranged facing each other so as to face these heat radiating surfaces.
- Each power semiconductor element (IGBT 328, IGBT 330, diode 156, diode 166) is arranged.
- the three surfaces that connect the first heat radiation surface 307A and the second heat radiation surface 307B that face each other constitute a surface that is sealed with a narrower width than the first heat radiation surface 307A and the second heat radiation surface 307B, and the remaining one side surface
- An insertion port 306 is formed at the bottom.
- the shape of the module case 304 does not need to be an accurate rectangular parallelepiped, and the corners may form a curved surface as shown in FIG. By using the metal case having such a shape, even when the module case 304 is inserted into a flow path through which a coolant such as water or oil flows, a seal against the coolant can be secured by the flange 304B. Intrusion into the module case 304 can be prevented with a simple configuration.
- the fins 305 are uniformly formed on the first heat radiation surface 307A and the second heat radiation surface 307B facing each other. Furthermore, a thin portion 304A having an extremely thin thickness is formed on the outer periphery of the first heat radiating surface 307A and the second heat radiating surface 307B. Since the thin portion 304A is extremely thin to such an extent that it can be easily deformed by pressurizing the fin 305, the productivity after the module primary sealing body 302 is inserted is improved.
- the gap between the conductor plate 315 and the inner wall of the module case 304 can be reduced by thermocompression bonding of the conductor plate 315 and the like to the inner wall of the module case 304 via the insulating member 333, and the power semiconductor The generated heat of the element can be efficiently transmitted to the fin 305. Further, by providing the insulating member 333 with a certain degree of thickness and flexibility, the generation of thermal stress can be absorbed by the insulating member 333, which is favorable for use in a power conversion device for a vehicle having a large temperature change. .
- a metal DC positive electrode wiring 315A and a DC negative electrode wiring 319A for electrical connection with the capacitor module 500 are provided, and a DC positive electrode terminal 315B and a DC negative electrode terminal 319B are provided at the tips thereof. Are formed respectively.
- a metallic AC wiring 320A for supplying AC power to the motor generator is provided, and an AC terminal 320B is formed at the tip thereof.
- the DC positive wiring 315A is connected to the conductor plate 315
- the DC negative wiring 319A is connected to the conductor plate 319
- the AC wiring 320A is connected to the conductor plate 320.
- metal signal wirings 324U and 324L for electrical connection with the driver circuit are provided, and a signal terminal 325U and a signal terminal 325L are formed at the tip portions thereof. .
- the signal wiring 324 ⁇ / b> U is connected to the IGBT 328
- the signal wiring 324 ⁇ / b> L is connected to the IGBT 328.
- the DC positive electrode wiring 315A, the DC negative electrode wiring 319A, the AC wiring 320A, the signal wiring 324U, and the signal wiring 324L are integrally molded as the auxiliary mold body 600 in a state where they are insulated from each other by the wiring insulating portion 608 formed of a resin material. Is done.
- the wiring insulating portion 608 also acts as a support member for supporting each wiring, and a thermosetting resin or a thermoplastic resin having an insulating property is suitable for the resin material used therefor. Thereby, it is possible to secure insulation between the DC positive electrode wiring 315A, the DC negative electrode wiring 319A, the AC wiring 320A, the signal wiring 324U, and the signal wiring 324L, and high-density wiring is possible.
- the auxiliary mold body 600 is fixed to the module case 304 with a screw 309 that passes through a screw hole provided in the wiring insulating portion 608 after being metal-bonded to the module primary sealing body 302 at the connection portion 370.
- TIG welding or the like can be used for metal bonding between the module primary sealing body 302 and the auxiliary mold body 600 in the connection portion 370.
- the direct current positive electrode wiring 315A and the direct current negative electrode wiring 319A are stacked on each other in a state of facing each other with the wiring insulating portion 608 interposed therebetween, and have a shape extending substantially in parallel. With such an arrangement and shape, the current that instantaneously flows during the switching operation of the power semiconductor element flows oppositely and in the opposite direction. As a result, the magnetic fields produced by the currents cancel each other out, and this action can reduce the inductance.
- the AC wiring 320A and the signal terminals 325U and 325L also extend in the same direction as the DC positive wiring 315A and the DC negative wiring 319A.
- connection part 370 in which the module primary sealing body 302 and the auxiliary mold body 600 are connected by metal bonding is sealed in the module case 304 by the second sealing resin 351.
- the auxiliary module side DC positive connection terminal 315C, the auxiliary module side DC negative connection terminal 319C, the auxiliary module side AC connection terminal 320C, and the auxiliary module side signal connection are provided on the auxiliary module 600 side of the connecting portion 370.
- Terminals 326U and auxiliary module side signal connection terminals 326L are arranged in a line.
- an element side DC positive connection terminal 315D an element side DC negative connection terminal 319D
- the element side AC connection terminal 320D, the element side signal connection terminal 327U, and the element side signal connection terminal 327L are arranged in a line.
- the structure in which the terminals are arranged in a row in the connection portion 370 facilitates the manufacture of the module primary sealing body 302 by transfer molding.
- a terminal constituted by the DC positive electrode wiring 315A (including the DC positive electrode terminal 315B and the auxiliary module side DC positive electrode connection terminal 315C) and the element side DC positive electrode connection terminal 315D is referred to as a positive electrode side terminal.
- a terminal composed of the DC negative electrode terminal 319B (including the auxiliary module side DC negative electrode connection terminal 319C) and the element side DC negative electrode connection terminal 315D is referred to as a negative electrode side terminal, and AC wiring 320A (AC terminal 320B and auxiliary module side AC connection)
- the terminal composed of the terminal 320C and the element side AC connection terminal 320D is referred to as an output terminal, and is composed of the signal wiring 324U (including the signal terminal 325U and the auxiliary module side signal connection terminal 326U) and the element side signal connection terminal 327U.
- Each of the above terminals protrudes from the first sealing resin 348 and the second sealing resin 351 through the connecting portion 370, and each protruding portion from the first sealing resin 348 (element side DC positive electrode connection terminal 315D).
- Element side DC negative electrode connection terminal 319D, element side AC connection terminal 320D, element side signal connection terminal 327U and element side signal connection terminal 327L) are one surface of the first sealing resin 348 having a polyhedral shape as described above. Are lined up in a row. Further, the positive terminal and the negative terminal protrude from the second sealing resin 351 in a stacked state and extend outside the module case 304.
- the power semiconductor element is connected with the terminal when the mold is clamped when the module primary sealing body 302 is manufactured by sealing the power semiconductor element with the first sealing resin 348. It is possible to prevent an excessive stress on the portion and a gap in the mold from occurring. In addition, since currents in opposite directions flowing through each of the stacked positive electrode side terminals and negative electrode side terminals generate magnetic fluxes in directions that cancel each other, a reduction in inductance can be achieved.
- the auxiliary module side DC positive electrode connection terminal 315C and the auxiliary module side DC negative electrode connection terminal 319C are the DC positive electrode terminal 315B, the DC positive electrode wiring 315A opposite to the DC negative electrode terminal 319B, and the tips of the DC negative electrode wiring 319A. It is formed in each part. Further, the auxiliary module side AC connection terminal 320C is formed at the tip of the AC wiring 320A opposite to the AC terminal 320B. The auxiliary module side signal connection terminals 326U and 326L are formed at the distal ends of the signal wirings 324U and 324L opposite to the signal terminals 325U and 325L, respectively.
- the element side DC positive connection terminal 315D, the element side DC negative connection terminal 319D, and the element side AC connection terminal 320D are formed on the conductor plates 315, 319, and 320, respectively.
- the element side signal connection terminals 327U and 327L are connected to the IGBTs 328 and 330 by bonding wires 371, respectively.
- the conductor plate 315 on the DC positive side and the conductor plate 320 on the AC output side and the element side signal connection terminals 327U and 327L are connected to a common tie bar 372, and are substantially the same. It is integrally processed so as to have a planar arrangement.
- the collector electrode of the IGBT 328 on the upper arm side and the cathode electrode of the diode 156 on the upper arm side are fixed.
- the conductor plate 320 is fixedly attached with a collector electrode of the IGBT 330 on the lower arm side and a cathode electrode of the diode 166 on the lower arm side.
- the conductor plate 318 and the conductor plate 319 are arranged in substantially the same plane.
- the emitter electrode of the IGBT 328 on the upper arm side and the anode electrode of the diode 156 on the upper arm side are fixed.
- an emitter electrode of the IGBT 330 on the lower arm side and an anode electrode of the diode 166 on the lower arm side are fixed.
- Each power semiconductor element is fixed to an element fixing portion 322 provided on each conductor plate via a metal bonding material 160.
- the metal bonding material 160 is, for example, a low-temperature sintered bonding material including a solder material, a silver sheet, and fine metal particles.
- Each power semiconductor element has a flat plate-like structure, and each electrode of the power semiconductor element is formed on the front and back surfaces. As shown in FIG. 8, each electrode of the power semiconductor element is sandwiched between the conductor plate 315 and the conductor plate 318, or the conductor plate 320 and the conductor plate 319. In other words, the conductor plate 315 and the conductor plate 318 are stacked so as to face each other substantially in parallel via the IGBT 328 and the diode 156. Similarly, the conductor plate 320 and the conductor plate 319 have a stacked arrangement facing each other substantially in parallel via the IGBT 330 and the diode 166. In addition, the conductor plate 320 and the conductor plate 318 are connected via an intermediate electrode 329.
- the upper arm circuit and the lower arm circuit are electrically connected to form an upper and lower arm series circuit.
- the IGBT 328 and the diode 156 are sandwiched between the conductor plate 315 and the conductor plate 318, and the IGBT 330 and the diode 166 are sandwiched between the conductor plate 320 and the conductor plate 319, so that the conductor plate 320 and the conductor plate 318 are connected to the intermediate electrode.
- the control electrode 328A of the IGBT 328 and the element side signal connection terminal 327U are connected by the bonding wire 371
- the control electrode 330A of the IGBT 330 and the element side signal connection terminal 327L are connected by the bonding wire 371.
- FIG. 9A is a perspective view of the capacitor module 500.
- FIG. 9B is an exploded perspective view for explaining the internal structure of the capacitor module 500.
- the laminated conductor plate 501 includes a negative electrode conductor plate 505 and a positive electrode conductor plate 507 formed of a plate-like wide conductor, and an insulating sheet 550 sandwiched between the negative electrode conductor plate 505 and the positive electrode conductor plate 507. Since the laminated conductor plate 501 cancels out the magnetic flux with respect to the current flowing through the series circuit of the upper and lower arms of each phase, the inductance of the current flowing through the series circuit of the upper and lower arms is reduced.
- the negative power supply terminal 508 and the positive power supply terminal 509 are formed so as to rise from one side of the laminated conductor plate 501 in the longitudinal direction, and are connected to the positive conductor plate 507 and the negative conductor plate 505, respectively. Yes.
- the auxiliary capacitor terminals 516 and 517 are formed in a state where they are raised from one side of the laminated conductor plate 501 in the longitudinal direction, and are connected to the positive conductor plate 507 and the negative conductor plate 505, respectively.
- the relay conductor portion 530 is formed in a state of being raised from one side in the longitudinal direction of the laminated conductor plate 501.
- the capacitor terminals 503a to 503c protrude from the end of the relay conductor portion 530 and are formed corresponding to the power semiconductor modules 300a to 300c.
- the capacitor terminals 503d to 503f also protrude from the end of the relay conductor portion 530, and are formed corresponding to the power semiconductor modules 301a to 301c.
- Each of the relay conductor portion 530 and the capacitor terminals 503a to 503c is constituted by a laminated state with the insulating sheet 550 interposed therebetween, and the inductance is reduced with respect to the current flowing through the series circuit 150 of the upper and lower arms.
- the relay conductor portion 530 is configured such that no through hole or the like that prevents the flow of current is formed at all or as few as possible.
- the reflux current generated at the time of switching between the power semiconductor modules 300a to 300c provided for each phase is easy to flow to the relay conductor portion 530, and hardly flows to the laminated conductor plate 501 side. Therefore, heat generation of the laminated conductor plate 501 due to the reflux current can be reduced.
- the negative electrode conductor plate 505, the positive electrode conductor plate 507, the battery negative electrode side terminal 508, the battery negative electrode side terminal 509, the relay conductor portion 530, and the capacitor terminals 503a to 503f are integrally formed metal plates. And has the effect of reducing inductance with respect to the current flowing through the series circuit of the upper and lower arms.
- a plurality of capacitor cells 514 are provided below the laminated conductor plate 501.
- three capacitor cells 514 are arranged in a line along one side in the longitudinal direction of the laminated conductor plate 501, and another three capacitor cells 514 are arranged in the other side in the longitudinal direction of the laminated conductor plate 501.
- a total of six capacitor cells are provided along one side.
- the capacitor cells 514 arranged along the respective sides in the longitudinal direction of the laminated conductor plate 501 are arranged symmetrically with respect to the dotted line AA shown in FIG. Thereby, when the direct current smoothed by the capacitor cell 514 is supplied to the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c, the current balance between the capacitor terminals 503a to 503c and the capacitor terminals 503d to 503f is achieved. And the inductance of the laminated conductor plate 501 can be reduced. Moreover, since it can prevent that an electric current flows locally in the laminated conductor board 501, a heat balance can be equalized and heat resistance can also be improved.
- Capacitor cell 514 is a unit structure of a power storage unit of capacitor module 500, and is a film in which two films each having a metal such as aluminum deposited thereon are stacked and wound so that each of the two metals serves as a positive electrode and a negative electrode. Use a capacitor.
- the electrode of the capacitor cell 514 is manufactured by spraying a conductor such as tin, with the wound shaft surfaces serving as a positive electrode and a negative electrode, respectively.
- the capacitor case 502 includes a storage portion 511 for storing the capacitor cell 514, and the storage portion 511 has a substantially rectangular upper surface and lower surface.
- the capacitor case 502 is provided with fixing means for fixing the capacitor module 500 to the flow path forming body 12, for example, holes 520a to 520h for allowing a screw to pass therethrough.
- the capacitor case 502 of this embodiment is made of a highly heat conductive resin in order to improve the heat conductivity, but may be made of metal or the like.
- the multilayer conductor plate 501 and the capacitor cell 514 are accommodated in the capacitor case 502, the multilayer conductor plate 501 is covered except for the capacitor terminals 503a to 503f, the negative power supply terminal 508, and the positive power supply terminal 509.
- the filler 551 is filled in the capacitor case 502.
- the seventh flow path portion 19g and the ninth flow path portion 19i are provided along the longitudinal direction of the storage portion 511 of the capacitor module 500 (see FIG. 3), so that the cooling efficiency is improved.
- the capacitor cell 514 is disposed so that one of the electrode surfaces of the capacitor cell 514 is opposed to the inner wall forming the side in the longitudinal direction of the storage portion 511.
- the inner wall forming the side in the longitudinal direction of the storage portion 511 is opposite to the second flow path portion 19b, the third flow path portion 19c, the fourth flow path portion 19d, the fifth flow path portion 19e, and the sixth flow path portion 19f. Formed.
- heat is easily transferred in the direction of the winding axis of the film, so that heat easily escapes to the capacitor case 502 via the electrode surface of the capacitor cell 514.
- the noise filter capacitor cell 515a is connected to the positive electrode conductor plate 507 and removes predetermined noise generated between the positive electrode and the ground.
- the noise filter capacitor cell 515b is connected to the negative electrode conductor plate 505, and removes predetermined noise generated between the negative electrode and the ground.
- the noise filter capacitor cells 515a and 515b are set to have a smaller capacity than the capacitor cell 514.
- the noise filter capacitor cells 515a and 515b are arranged closer to the negative power supply terminal 508 and the positive power supply terminal 509 than the capacitor terminals 503a to 503f. Thereby, the predetermined noise mixed in the negative power supply terminal 508 and the positive power supply terminal 509 can be removed early, and the influence of noise on the power semiconductor module can be reduced.
- FIG. 10 is a cross-sectional view of the power conversion device 200 taken along the plane AA in FIG.
- the power semiconductor module 300b is accommodated in the second flow path portion 19b shown in FIG.
- the outer wall of the module case 304 is in direct contact with the cooling refrigerant flowing in the second flow path portion 19b.
- the other power semiconductor modules 300a and 300c and the power semiconductor modules 301a to 301c are also housed in the respective flow path portions, similarly to the power semiconductor module 300b.
- the power semiconductor module 300b is disposed on the side of the capacitor module 500.
- the height 540 of the capacitor module is formed smaller than the height 360 of the power semiconductor module.
- the height 540 of the capacitor module is the height from the bottom surface of the capacitor case 502 to the capacitor terminal 503b
- the height 360 of the power semiconductor module is the height from the bottom surface of the module case 304 to the tip of the signal terminal 325U. That's it.
- the 2nd flow path formation body 442 provides the 7th flow path part 19g and the 9th flow path part 19i arrange
- the height 443 of the seventh flow path portion is smaller than the difference between the height 360 of the power semiconductor module and the height 540 of the capacitor module.
- the height 443 of the seventh flow path portion may be the same as the difference between the height 360 of the power semiconductor module and the height 540 of the capacitor module, and the seventh flow path portion 19g and the ninth flow path portion.
- the height of 19i is the same.
- the assemblability can be improved.
- the seventh flow path portion 19g can be disposed below the capacitor module 500. Cooling is also possible. Moreover, since the height of the upper part of the capacitor module 500 and the upper part of the power semiconductor module 300b is a short distance, it is possible to suppress the capacitor terminal 503b from becoming longer in the height direction of the capacitor module 500.
- the seventh flow path portion 19g and the ninth flow path portion 19i in the lower part of the capacitor module 500, it is possible to avoid disposing the cooling flow path on the side of the capacitor module 500, and And the power semiconductor module 300b can be brought close to each other to prevent the wiring distance between the capacitor module 500 and the power semiconductor module 300b from becoming long.
- the driver circuit board 22 is equipped with a transformer 24 that generates a driving power source for the driver circuit.
- the height of the transformer 24 is formed larger than the height of the circuit components mounted on the driver circuit board 22.
- the signal terminal 325U and the DC positive terminal 315B are arranged in the space between the driver circuit board 22 and the capacitor module 500.
- the space between the driver circuit board 22 and the capacitor module 500 can be effectively used.
- the distance between the driver circuit board 22 and the metal base plate 11 can be suppressed by mounting circuit components having the same height on the surface of the driver circuit board 22 opposite to the surface on which the transformer 24 is disposed. I can do it.
- FIG. 11 is an overall perspective view in which the lid 8 and the control circuit board 20 are removed and the driver circuit board 22, the base plate 11, and the AC terminal blocks 760 and 761 are disassembled.
- the driver circuit board 22 is disposed on the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c.
- the metal base plate 11 is disposed on the opposite side of the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c with the driver circuit board 22 interposed therebetween.
- Driver circuit board 22 forms through holes 22a to 22c through which AC bus bar 763 passes.
- the driver circuit board 22 forms through holes 22d to 22f through which the AC bus bar 763 passes.
- the current sensor 180a is fitted into the through hole 22a
- the current sensor 180b is fitted into the through hole 22b
- the current sensor 180c is fitted into the through hole 22c
- the current sensor 180d is fitted into the through hole 22d
- the current sensor 180e is fitted into the through hole 22e
- the current sensor 180f is fitted into the through hole 22f.
- the current sensor can be arranged directly on the driver circuit board 22, the wiring of the AC bus bar 763 forming the AC terminal blocks 760 and 761 can be simplified, and the size can be reduced. Contributes to
- the current sensor 180a and the like are disposed in a space between the driver circuit board 22, the power semiconductor modules 300a to 300c, and the power semiconductor modules 301a to 301c.
- the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c have DC positive terminals 315B and the like, and these DC positive terminals 315B and the like need to secure a sufficient insulation distance between the driver circuit board 22 and the like.
- the insulation space and the arrangement space for the current sensor can be shared as the space in the power converter. Therefore, it leads to size reduction of a power converter device.
- the base plate 11 has a through hole 11a formed at a position facing the through holes 22a to 22c, and a through hole 11b formed at a position opposed to the through holes 22d to 22f.
- the lid 8 forms a third opening 204 a at a position facing the through hole 11 a to form an AC connector 188.
- the lid 8 forms a fourth opening 204b at a position facing the through hole 11b to form an AC connector 188.
- the power converter 200 can be downsized.
- the driver circuit board 22 has a length in which the long side of the capacitor module 500 is one side, and the short side of the capacitor module 500 and the long sides of the power semiconductor modules 300a to 300c and 301a to 301c are combined. It has a rectangular shape on the other side.
- the through holes 22a to 22c are arranged along one side of the driver circuit board 22, even if there are a plurality of through holes, it is possible to secure a wide circuit wiring area.
- control circuit board 20 is arranged to face one surface of the lid 8 that forms the first opening 202.
- the connector 21 is directly mounted on the control circuit board 20 and protrudes to the outside through the first opening 202 formed in the lid 8. Thereby, the space inside the power conversion device 200 can be effectively used.
- control circuit board 20 on which the connector 21 is mounted is fixed to the base plate 11, even if a physical force is applied to the connector 21 from the outside, the load on the control circuit board 20 can be suppressed.
- the improvement of reliability including durability can be expected.
- FIG. 12 is a cross-sectional perspective view taken along plane B in FIG.
- the connection portion 23a is a connection portion between the signal terminal 325U of the power semiconductor module 300a and the driver circuit board 22.
- the connection portion 23b is a connection portion between the signal terminal 325L of the power semiconductor module 300a and the driver circuit board 22.
- the connection parts 23a and 23b are formed of a solder material.
- the through hole 11a of the base plate 11 is formed up to a position facing the connecting portions 23a and 23b. Thereby, in the state where the driver circuit board 22 is fixed to the base plate 11, the connection work of the connection portions 23 a and 23 b can be performed through the through holes 11 a of the metal base plate 11.
- the control circuit board 20 is arranged so that the projection part of the control circuit board 20 does not overlap the projection part of the through hole 11a when projected from the upper surface of the power conversion device 200. Thereby, the control circuit board 20 does not interfere with the connection work of the connection parts 23a and 23b, and the control circuit board 20 can reduce the influence of electromagnetic noise from the connection parts 23a and 23b.
- the driver circuit board 22 is formed large so as to face the power semiconductor module 300a and the like and the capacitor module 500. Even in such a case, the AC terminal 320B is disposed farther than the DC positive terminal 315B with respect to the capacitor module 500.
- the control terminal 325L is disposed between the DC positive terminal 315B and the AC terminal 320B.
- the connecting portion 23b is disposed at a position facing the control terminal 325L.
- the through hole 22b is disposed on the driver circuit board 22 closer to the edge of the driver circuit board 22 than the driver circuit 25. Therefore, a decrease in strength of the driver circuit board 22 due to the formation of the through hole 22b can be suppressed, and vibration resistance performance can be improved.
- FIG. 13 is a cross-sectional view of the power conversion device 200 cut along the FF plane of FIG.
- Both the AC relay bus bar 751 and the AC terminal block 761 are supported by the flow path forming body 12 having a function as a casing. For this reason, the load applied when the AC connector 188 of the motor is attached is stress-dispersed to the flow path forming body 12 in the direction of the arrow direction 755 indicated by the dotted line via the AC terminal block 761. Further, the load that is not distributed and partitioned by the AC terminal block 761 is stress-dispersed from the AC bus bar 763 through the AC relay bus bar 751 to the flow path forming body 12 in the direction of the arrow 756 indicated by the two-dot chain line.
- the load applied when the AC connector 188 of the motor is attached reaches the AC welding connection portion 751a, so that the stress is distributed in two stages, and the stress generated in the welded portion can be eliminated as much as possible.
- the AC relay bus bar 751 is welded to the AC terminal 320B of the power semiconductor module 301a.
- the AC terminal block 761 is connected to the AC connector 188 of the motor and also connected to the AC relay bus bar 751.
- the effect of reducing the stress generated in the welded portion is maintained by changing only the shape of the AC bus bar 763 forming the AC terminal block 761, and the output direction of the AC connector 188 of the motor is changed to that of the power semiconductor module 301a.
- a structure capable of both the upper surface direction and the side surface direction can be easily adopted.
- the metal support member 803 protrudes from the flow path forming body 12 and is connected to the flow path forming body 12.
- the metal base plate 11 is supported by the distal end portion of the support member 803.
- the flow path forming body 12 is connected to an electrical ground.
- a leakage current flow 804 indicates the direction of leakage current flowing from the driver circuit board 22 to the metal base plate 11, the support member 803, and the flow path forming body 12 in this order.
- a leakage current flow 805 indicates the direction of leakage current flowing from the control circuit board 20 to the metal base plate 11, the support member 803, and the flow path forming body 12 in this order.
- FIG. 14A is a perspective view of an AC-side relay conductor 802 that includes an AC terminal block 760 and an AC relay bus bar 750.
- FIG. 14B is a perspective view of the AC terminal block 760.
- FIG. 14C is a perspective view of the AC relay bus bar 750.
- the AC terminal block 760 Since the AC terminal block 760 and the AC terminal block 761 have the same structure, the AC terminal block 760 will be described as a representative. Further, since the AC relay bus bar 750 and the AC relay bus bar 751 have the same structure, the AC terminal block 750 will be representatively described.
- the AC terminal block 760 includes an AC bus bar 763 and a resin block 762 that are integrally formed. As shown in FIG. 14A, the AC bus bar 763 is mechanically connected to the AC relay bus bar 750 at the lower portion thereof by screws or the like.
- the upper part 763a of the AC bus bar 763 is mechanically connected with an AC connector 188 attached thereto.
- both ends of the AC bus bar 763 are mechanically connected by screws or the like, it is possible to select an inexpensive material having no weldability.
- the relay bus bar 753 and the insulating member 752 are integrally formed. As shown in FIG. 15 described later, one end of the relay bus bar 753 is welded to the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c. Therefore, the relay bus bar 753 needs to use a material having weldability.
- Relay bus bar 753 and AC bus bar 763 are connected by a first fastening member 771 that passes through a through-hole 755 formed in relay bus bar 753.
- the through hole 755 has an elliptical shape in which a long diameter is formed along the arrangement direction of the AC terminal block 760 and the AC relay bus bar 750.
- tolerance variations due to the assembly of the AC terminal block 760 and the AC relay bus bar 750 can be allowed.
- the relay bus bar 753 and the insulating member 752 are integrally formed. Further, the AC terminal blocks 760 and 761 are integrally formed with an AC bus bar 763 and a resin block 762.
- FIG. 15 shows that the lid 8, the control circuit board 20, the metal base plate 11, the driver circuit board 22, and the AC terminal blocks 760 and 761 are removed in order to explain the welded connections of the power semiconductor modules 300a to 300c and 301a to 301c.
- FIG. 15 shows that the lid 8, the control circuit board 20, the metal base plate 11, the driver circuit board 22, and the AC terminal blocks 760 and 761 are removed in order to explain the welded connections of the power semiconductor modules 300a to 300c and 301a to 301c.
- the relay bus bar 753 is connected to the AC terminal 320B of the power semiconductor module 301a by welding connection, and forms AC welding connection portions 750a and 751a. That is, since the relay bus bar 753 is connected by welding, it is necessary to select a material having weldability. On the other hand, as shown in FIG. 14A, the AC bus bar 763 is only mechanically connected to the relay bus bar 753. Therefore, AC bus bar 763 can select a material that does not have weldability.
- the AC bus bar 763 has a higher degree of freedom in material selection than the relay bus bar 753, it is possible to reduce the material cost by selecting a cheaper material. Further, by making the volume of the relay bus bar 753 smaller than the volume of the AC bus bar 763, the cost can be further reduced.
- the relay bus bar 753 and the AC terminal 320B have the same thickness as much as possible. That is, the selection of the material and the thickness of the relay bus bar 753 is limited, but the AC bus bar 763 is not limited in the selection of the material and the thickness by welding connection, and an improvement in design flexibility can be expected.
- the joint portions of the capacitor terminal 503a, the DC positive terminal 315B, and the DC negative terminal 319B are welded to form a DC welding connection 780a.
- the joint portion of the capacitor terminal 503d, the DC positive terminal 315B, and the DC negative terminal 319B is welded to form a DC welding connection 780d.
- the joining portion of the capacitor terminal 503f, the DC positive terminal 315B, and the DC negative terminal 319B is welded to form a DC welding connection 780f.
- the capacitor module 500, the power semiconductor modules 300a to 300c, and the power semiconductor modules 301a to 301c forming the DC welding connection portions 780a to 780f are all attached to the flow path forming body 12. That is, the capacitor module 500, the power semiconductor modules 300a to 300c, and the power semiconductor modules 301a to 301c are fixed to an integrally formed base (flow path forming body 12). As a result, it is possible to keep the resonance point frequency at the time of vibration of the DC welding connection portions 780a to 780f high, so that the reliability of the welded portion can be improved.
- the joint portion of the relay bus bar 753 and the power semiconductor module 300a is welded to form an AC welding connection portion 750a.
- the mating part of the relay bus bar 753 and the power semiconductor module 300b is welded to form an AC welding connection part 750b.
- the mating portion of the relay bus bar 753 and the power semiconductor module 300c is welded to form an AC welding connection portion 750c.
- the mating portion of the relay bus bar 753 and the power semiconductor module 301a is welded to form an AC welding connection portion 751a.
- the joint portion of the relay bus bar 753 and the power semiconductor module 301b is welded to form an AC welding connection portion 751b.
- the mating part of the relay bus bar 753 and the power semiconductor module 301c is welded to form an AC welding connection part 751c.
- the AC relay bus bars 750 and 751 forming the AC welding connection portions 750a to 750c and 751a to 751c are attached to the flow path forming body 12, and as described above, the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301 c is attached to the flow path forming body 12. That is, the AC relay bus bars 750 and 751, the power semiconductor modules 300a to 300c, and the power semiconductor modules 301a to 301c are fixed to an integrally formed base (flow path forming body 12).
- the AC welded connections 750a to 750c and 751a to 751c can maintain the resonance point frequency during vibration similarly to the DC welded connections 780a to 780f, so that the reliability of the welded portion can be improved. It becomes possible.
- the flow path forming body 12 has a first flow path forming body 441 (see FIG. 3) for cooling the power semiconductor modules 300a to 300c and 301a to 301c.
- the AC relay bus bars 750 and 751 are attached near the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c. That is, the flow path forming body 441 and the AC relay bus bars 750 and 751 are installed very close to each other.
- heat from AC connector 188 is transmitted from AC bus bar 763 to relay bus bar 753 in the direction of arrow 755 indicated by the dotted line, as shown in FIG. Further, the heat from the AC connector 188 is cooled by the flow path forming body 441 of the flow path forming body 12 via the insulating member 752.
- the thickness of the relay bus bar 753 is made larger than the thickness of the AC terminal 320B, the heat from the AC connector 188 can be actively dissipated, so that the power semiconductor modules 300a to 300c and The improvement of durability including heat resistance of 301a to 301c can be expected.
- the thickness of the bus bars to be welded is significantly different, there is a concern about deterioration in durability including strength due to vibration and impact after welding and deterioration of weldability.
- the difference in the thickness of each bus bar is limited to 30% or less. However, this is not the case when the above concerns are resolved.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
Description
図5は、理解を助けるために、図4に示す状態からネジ309および第2封止樹脂351を取り除いたパワー半導体モジュール300aを示す図である。図5(a)は斜視図であり、図5(b)は図4(b)と同様に断面Dで切断して方向Eから見たときの断面図である。また、図5(c)はフィン305が加圧されて薄肉部304Aが変形される前の断面図を示している。
このような形状の金属製のケースを用いることで、モジュールケース304を水や油などの冷媒が流れる流路内に挿入しても、冷媒に対するシールをフランジ304Bにて確保できるため、冷却媒体がモジュールケース304の内部に侵入するのを簡易な構成で防ぐことができる。また、対向した第1放熱面307Aと第2放熱面307Bに、フィン305がそれぞれ均一に形成される。さらに、第1放熱面307A及び第2放熱面307Bの外周には、厚みが極端に薄くなっている薄肉部304Aが形成されている。薄肉部304Aは、フィン305を加圧することで簡単に変形する程度まで厚みを極端に薄くしてあるため、モジュール一次封止体302が挿入された後の生産性が向上する。
補助モールド体600は、モジュール一次封止体302と接続部370において金属接合された後に、配線絶縁部608に設けられたネジ穴を貫通するネジ309によってモジュールケース304に固定される。接続部370におけるモジュール一次封止体302と補助モールド体600との金属接合には、たとえばTIG溶接などを用いることができる。
11 ベース板
11a~11b 貫通孔
12 流路形成体
12a~12d 側壁
13 入口配管
14 出口配管
19a 第1流路部
19b 第2流路部
19c 第3流路部
19d 第4流路部
19e 第5流路部
19f 第6流路部
19g 第7流路部
19h 第8流路部
19i 第9流路部
20 制御回路基板
21 コネクタ
22 ドライバ回路基板
22a~22f 貫通孔
23a 接続部
23b 接続部
24 トランス
138 直流コネクタ
156、166 ダイオード
200 電力変換装置
202 第1開口
203 第2開口
204a 第3開口
204b 第4開口
205 第5開口
300a~300c、301a~301c パワー半導体モジュール
302 モジュール一次封止体
304 モジュールケース
304A 薄肉部
304B フランジ
305 フィン
306 挿入口
307A 第1放熱面
307B 第2放熱面
309 ネジ
315 導体板
315A 直流正極配線
315B 直流正極端子
315C 補助モジュール側直流正極接続端子
315D 素子側直流正極接続端子
318、319、320 導体板
319A 直流負極配線
319B 直流負極端子
319C 補助モジュール側直流負極接続端子
319D 素子側直流負極接続端子
320A 交流配線
320B 交流端子
320C 補助モジュール側交流接続端子
320D 素子側交流接続端子
322 素子固着部
324U、324L 信号配線
325L、325U 信号端子
326L、326U 補助モジュール側信号接続端子
327L、327U 素子側信号接続端子
328、330 IGBT
328A、330A 制御電極
329 中間電極
333 絶縁部材
348 第1封止樹脂
350 補機用パワーモジュール
351 第2封止樹脂
360 パワー半導体モジュールの高さ
370 接続部
371 ボンディングワイヤ
372 タイバー
400a~400c 開口部
402a~402c 開口部
404 開口部
405 収納空間
406a~406f 凸部
409 シール部材
417 流れ方向
420 下カバー
441 第1流路形成体
442 第2流路形成体
444 第3流路形成体
500 コンデンサモジュール
501 積層導体板
502 コンデンサケース
503a~503f コンデンサ端子
505 負極導体板
507 正極導体板
508 負極側の電源端子
509 正極側の電源端子
510 負極側電力線
511 収納部
512 正極側電力線
514 コンデンサセル
515a、515b ノイズフィルタ用コンデンサセル
516、517 補機用コンデンサ端子
520a~520h 孔
530 中継導体部
540 コンデンサモジュールの高さ
550 絶縁シート
551 充填材
600 補助モールド体
608 配線絶縁部
750 交流リレーバスバー
751 交流リレーバスバー
750a~750c 交流溶接接続部
751a~751c 交流溶接接続部
752 絶縁部材
753 リレーバスバー
755 貫通孔
760、761 交流端子ブロック
762 樹脂製ブロック
763 交流バスバー
Claims (6)
- 直流電流を交流電流に変換するパワー半導体モジュールと、
前記パワー半導体モジュールを収納する収納空間を形成する筐体と、
前記パワー半導体モジュールの交流端子と溶融接続により接続される交流リレーバスバーと、
モータの交流端子と接続される交流端子ブロックと、を備え、
前記交流リレーバスバーは、絶縁部材を介して前記筐体に支持され、
前記交流端子ブロックは、前記交流リレーバスバーと接続されるとともに前記筐体に支持される電力変換装置。 - 請求項1に記載の電力変換装置であって、
前記交流端子ブロックは、前記交流リレーバスバーと機械的接続により接続する交流バスバーと、当該交流バスバーを支持する樹脂製ブロックと、を有し、
前記交流リレーバスバーは、前記交流バスバーとは異なる金属材料により構成され、
さらに前記交流リレーバスバーの体積は、前記交流バスバーの体積より小さい電力変換装置。 - 請求項2に記載の電力変換装置であって、
前記交流リレーバスバーの厚さは、前記パワー半導体モジュールの前記交流端子の厚さよりも大きく形成される電力変換装置。 - 請求項1ないし3に記載されたいずれかの電力変換装置であって、
前記交流リレーバスバーは、第1貫通孔を形成し、
前記第1貫通孔は、前記交流端子ブロックと前記交流リレーバスバー750の配置方向に沿って長径が形成される楕円形状であり、
前記交流端子ブロックは、前記第1貫通孔を通る第1締結部材によって、前記交流リレーバスバーと接続される電力変換装置。 - 請求項4に記載された電力変換装置であって、
前記パワー半導体モジュールに伝達される駆動信号を出力するドライバ回路基板と、
前記交流電流を検出するための第1貫通孔を形成する電流センサと、を備え、
前記ドライバ回路基板は、前記交流端子ブロックと前記交流リレーバスバーとの間に配置され、
さらに前記ドライバ回路基板は、第3貫通孔を形成し、
前記電流センサは、当該電流センサの前記第2貫通孔が前記第3貫通孔と対向するように配置され、
前記交流バスバーは、前記第2貫通孔及び前記第3貫通孔を通って前記交流リレーバスバーと接続される電力変換装置。 - 請求項5に記載された電力変換装置であって、
前記ドライバ回路基板を支持するベース板を備え、
前記ベース板は、前記筐体に支持され、
前記交流端子ブロックは、前記ベース板に支持される電力変換装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380074459.XA CN105027412B (zh) | 2013-03-13 | 2013-12-18 | 电力变换装置 |
US14/775,124 US9750147B2 (en) | 2013-03-13 | 2013-12-18 | Power converter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-049831 | 2013-03-13 | ||
JP2013049831A JP6186143B2 (ja) | 2013-03-13 | 2013-03-13 | 電力変換装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014141558A1 true WO2014141558A1 (ja) | 2014-09-18 |
Family
ID=51536244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/083813 WO2014141558A1 (ja) | 2013-03-13 | 2013-12-18 | 電力変換装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9750147B2 (ja) |
JP (1) | JP6186143B2 (ja) |
CN (1) | CN105027412B (ja) |
WO (1) | WO2014141558A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015187500A1 (en) * | 2014-06-02 | 2015-12-10 | Enphase Energy, Inc. | Ungrounded inverter enclosure and cabling |
WO2016047212A1 (ja) * | 2014-09-25 | 2016-03-31 | 日立オートモティブシステムズ株式会社 | 電力変換装置 |
JP6415605B2 (ja) * | 2015-01-19 | 2018-10-31 | 三菱電機株式会社 | コントローラ |
US11570921B2 (en) * | 2015-06-11 | 2023-01-31 | Tesla, Inc. | Semiconductor device with stacked terminals |
EP3206468B1 (de) * | 2016-02-15 | 2018-12-26 | Siemens Aktiengesellschaft | Umrichter mit gleichspannungszwischenkreis |
ES2863777T3 (es) * | 2016-04-28 | 2021-10-11 | Teleste Oyj | Disposición estructural para un dispositivo de campo CATV |
JP6591673B2 (ja) * | 2016-07-08 | 2019-10-16 | 日立オートモティブシステムズ株式会社 | 電力変換装置 |
DE102016118163A1 (de) * | 2016-09-26 | 2018-03-29 | Rausch & Pausch Gmbh | Lösbare verbindungseinrichtung für hohe ströme |
JP6678770B2 (ja) * | 2016-12-22 | 2020-04-08 | 日立オートモティブシステムズ株式会社 | 電力変換装置 |
WO2018190184A1 (ja) * | 2017-04-14 | 2018-10-18 | パナソニックIpマネジメント株式会社 | 電力変換装置 |
CN109874386B (zh) * | 2017-04-27 | 2021-09-10 | 富士电机株式会社 | 电子部件和电力变换装置 |
EP3616476B1 (en) * | 2017-06-07 | 2020-11-25 | ABB Power Grids Switzerland AG | Power semiconductor module |
JP6708190B2 (ja) * | 2017-09-05 | 2020-06-10 | 株式会社デンソー | 半導体モジュールの接合構造及び接合方法 |
EP3734829B1 (en) * | 2017-12-27 | 2024-07-24 | Kabushiki Kaisha Yaskawa Denki | Inverter device |
CN112055938B (zh) * | 2018-04-26 | 2023-11-17 | 东芝三菱电机产业系统株式会社 | 电力转换装置及电力转换单元 |
CN114788157A (zh) | 2019-12-16 | 2022-07-22 | 日立安斯泰莫株式会社 | 电力转换装置以及马达 |
DE112021000077T5 (de) * | 2020-03-05 | 2022-04-14 | Fuji Electric Co., Ltd. | Leistungswandler |
US11855375B2 (en) | 2020-08-31 | 2023-12-26 | Panasonic Intellectual Property Management Co., Ltd. | Power conversion device and component interconnection structure |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1189246A (ja) * | 1997-09-02 | 1999-03-30 | Denso Corp | 三相インバータモジュール |
JP2007234561A (ja) * | 2006-03-03 | 2007-09-13 | Sumitomo Wiring Syst Ltd | 電気接続構造 |
JP2011135737A (ja) * | 2009-12-25 | 2011-07-07 | Denso Corp | 電力変換装置 |
JP2012139014A (ja) * | 2010-12-27 | 2012-07-19 | Hitachi Automotive Systems Ltd | 車両用電力変換装置 |
JP2013009581A (ja) * | 2011-05-26 | 2013-01-10 | Denso Corp | 電力変換装置 |
JP2013027218A (ja) * | 2011-07-25 | 2013-02-04 | Hitachi Automotive Systems Ltd | 電力変換装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2809095B2 (ja) * | 1994-03-04 | 1998-10-08 | 株式会社デンソー | インバータ装置 |
US5872711A (en) * | 1998-01-20 | 1999-02-16 | Reliance Electric Industrial Company | Low impedance contoured laminated bus assembly and method for making same |
DE10153748A1 (de) * | 2001-10-31 | 2003-05-22 | Siemens Ag | Stromrichtereinheit in Modulbauweise |
US7187568B2 (en) * | 2002-01-16 | 2007-03-06 | Rockwell Automation Technologies, Inc. | Power converter having improved terminal structure |
US6865080B2 (en) * | 2002-01-16 | 2005-03-08 | Rockwell Automation Technologies, Inc. | Compact fluid cooled power converter supporting multiple circuit boards |
US7505294B2 (en) * | 2003-05-16 | 2009-03-17 | Continental Automotive Systems Us, Inc. | Tri-level inverter |
JP4979909B2 (ja) * | 2005-08-19 | 2012-07-18 | 株式会社日立製作所 | 電力変換装置 |
JP4988665B2 (ja) * | 2008-08-06 | 2012-08-01 | 日立オートモティブシステムズ株式会社 | 半導体装置および半導体装置を用いた電力変換装置 |
JP5002568B2 (ja) * | 2008-10-29 | 2012-08-15 | 日立オートモティブシステムズ株式会社 | 電力変換装置 |
JP5257350B2 (ja) | 2009-12-23 | 2013-08-07 | 株式会社デンソー | 車両用電力変換装置 |
JP5370205B2 (ja) | 2010-02-19 | 2013-12-18 | 株式会社デンソー | バスバーの締結構造および電力変換装置 |
JP5740986B2 (ja) * | 2010-03-17 | 2015-07-01 | 株式会社安川電機 | 電力変換装置 |
JP5618595B2 (ja) * | 2010-04-01 | 2014-11-05 | 日立オートモティブシステムズ株式会社 | パワーモジュール、およびパワーモジュールを備えた電力変換装置 |
-
2013
- 2013-03-13 JP JP2013049831A patent/JP6186143B2/ja active Active
- 2013-12-18 WO PCT/JP2013/083813 patent/WO2014141558A1/ja active Application Filing
- 2013-12-18 CN CN201380074459.XA patent/CN105027412B/zh active Active
- 2013-12-18 US US14/775,124 patent/US9750147B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1189246A (ja) * | 1997-09-02 | 1999-03-30 | Denso Corp | 三相インバータモジュール |
JP2007234561A (ja) * | 2006-03-03 | 2007-09-13 | Sumitomo Wiring Syst Ltd | 電気接続構造 |
JP2011135737A (ja) * | 2009-12-25 | 2011-07-07 | Denso Corp | 電力変換装置 |
JP2012139014A (ja) * | 2010-12-27 | 2012-07-19 | Hitachi Automotive Systems Ltd | 車両用電力変換装置 |
JP2013009581A (ja) * | 2011-05-26 | 2013-01-10 | Denso Corp | 電力変換装置 |
JP2013027218A (ja) * | 2011-07-25 | 2013-02-04 | Hitachi Automotive Systems Ltd | 電力変換装置 |
Also Published As
Publication number | Publication date |
---|---|
US9750147B2 (en) | 2017-08-29 |
US20160037654A1 (en) | 2016-02-04 |
CN105027412B (zh) | 2017-12-01 |
CN105027412A (zh) | 2015-11-04 |
JP2014176271A (ja) | 2014-09-22 |
JP6186143B2 (ja) | 2017-08-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6186143B2 (ja) | 電力変換装置 | |
JP6097557B2 (ja) | 電力変換装置 | |
JP5789576B2 (ja) | 電力変換装置 | |
JP5738817B2 (ja) | 電力変換装置 | |
JP6663810B2 (ja) | パワー半導体装置及びそれを用いた電力変換装置 | |
JP6072492B2 (ja) | コンデンサモジュール及び電力変換装置 | |
JP5737275B2 (ja) | インバータ装置 | |
JP5846854B2 (ja) | 一体型電力変換装置及びそれに用いられるdcdcコンバータ装置 | |
JP5592496B2 (ja) | 電力変換装置 | |
JP2013027218A (ja) | 電力変換装置 | |
JP6180857B2 (ja) | 電力変換装置 | |
JP6932225B1 (ja) | 電力変換装置 | |
JP5378293B2 (ja) | パワーモジュール及びそれを用いた電力変換装置 | |
JP6035615B2 (ja) | 電力変換装置 | |
JP7006464B2 (ja) | 電力変換装置 | |
JP6258543B2 (ja) | 電力変換装置 | |
JP5966065B2 (ja) | 電力変換装置 | |
JP2014161227A (ja) | 電力変換装置 | |
JP2014113051A (ja) | 電力変換装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201380074459.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13877552 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14775124 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13877552 Country of ref document: EP Kind code of ref document: A1 |