WO2020195141A1 - 電力変換装置および電力変換装置の製造方法 - Google Patents
電力変換装置および電力変換装置の製造方法 Download PDFInfo
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- WO2020195141A1 WO2020195141A1 PCT/JP2020/003315 JP2020003315W WO2020195141A1 WO 2020195141 A1 WO2020195141 A1 WO 2020195141A1 JP 2020003315 W JP2020003315 W JP 2020003315W WO 2020195141 A1 WO2020195141 A1 WO 2020195141A1
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- Prior art keywords
- semiconductor module
- power semiconductor
- bus bar
- terminal
- exposed
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- 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
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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
- 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
-
- 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
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
Definitions
- the present invention relates to a power conversion device and a method for manufacturing the power conversion device.
- a power conversion device for driving a vehicle such as a hybrid vehicle or an electric vehicle accommodates, for example, a power semiconductor module for three phases and a smoothing capacitor that form an inverter circuit in a case that constitutes a flow path forming body. It is configured.
- the input / output terminals and smoothing capacitors of the power semiconductor module are connected to, for example, a mold bus bar, and the signal terminals are connected to a control circuit board.
- the mold bus bar is mounted directly on the entire surface of the flat surface of the flow path forming body.
- the terminal portion of the mold bus bar connected to the input / output terminal of the power semiconductor module is exposed from the resin portion on the side opposite to the flow path forming body.
- the mold bus bar and the flow path forming body are arranged in contact with each other, and the surface of the mold bus bar in contact with the flow path forming body is covered with a resin portion constituting the mold bus bar.
- the heat transferred from the power semiconductor module to the mold bus bar is cooled by the flow path forming body, so that the temperature of the bus bar can be lowered (see, for example, Patent Document 1). ).
- the mold bus bar is directly mounted on the entire flat surface of the flow path forming body and is thermally conductively coupled. Therefore, the spatial distance from the flat surface of the flow path forming body to the exposed root portion (hereinafter, the exposed root portion of the terminal portion) from the resin portion of the bus bar terminal portion is substantially equal to the thickness of the molded bus bar. Further, since the bus bar and the flow path forming body are connected at a position directly below the exposed root portion of the terminal portion of the bus bar, the flow path in the creepage distance from the exposed root portion of the terminal portion of the bus bar to the flow path forming body. The distance along the flat surface of the formation is almost zero.
- the creepage distance from the exposed root of the terminal portion of the bus bar to the flow path forming body is also substantially equal to the thickness of the molded bus bar. That is, the spatial distance and creepage distance from the exposed root of the terminal portion of the bus bar to the flow path forming body are short distances substantially equal to the thickness of the bus bar mold. Therefore, the heat generated by the power semiconductor module causes the bus bar to become hot, the temperature of the smoothing capacitor rises, and the temperature of the smoothing capacitor may exceed the heat resistant temperature.
- the power conversion device includes a capacitor, a first power semiconductor module and a second power semiconductor module having input or output terminals protruding from one surface, respectively, and the capacitor.
- a case having a partitioned portion, a resin portion, and a connecting conductor are integrally provided, and a connecting member arranged on the one surface of the first power semiconductor module and the second power semiconductor module.
- the connecting conductor includes a capacitor connecting portion connected to the capacitor, a first terminal portion exposed from the resin portion, and connected to the terminal of the first power semiconductor module, and the second power.
- a capacitor in the method of manufacturing a power conversion device, a capacitor is housed in a capacitor housing part of a case, and an input protruding from one surface is provided in the semiconductor module housing part of the case provided with a partition portion.
- a first power semiconductor module and a second power semiconductor module having terminals for use or output are housed on both sides of the partition portion of the case, and a resin portion and a connecting conductor are integrally provided.
- the connecting conductor has a capacitor connecting portion connected to the capacitor, and is exposed from the resin portion and connected to the terminal of the first power semiconductor module.
- the first terminal portion and the second power A connecting member having a second terminal portion connected to the terminal of the semiconductor module is provided on the one surface of the first power semiconductor module and the second power semiconductor module, and the partition portion includes.
- a protruding portion that protrudes toward the connecting member from the one surface of the first power semiconductor module and the second power semiconductor module and thermally couples to the connecting member is provided, and the connecting member is provided.
- the protruding portion is formed with the first root portion of the exposed portion where the first terminal portion is exposed from the resin portion.
- the second terminal portion is arranged between the second terminal portion and the second root portion of the exposed portion exposed from the resin portion, and includes thermal coupling to the connecting member.
- the present invention it is possible to increase the spatial distance and creepage distance between the exposed portion of the connecting member from the resin portion and the power semiconductor module to suppress the temperature rise of the capacitor.
- FIG. 1 is a diagram showing an example of a circuit diagram of the power conversion device of the present invention.
- FIG. 2 is an external perspective view of the power conversion device according to the embodiment of the present invention.
- FIG. 3 is an exploded perspective view of the power conversion device shown in FIG.
- FIG. 4 is a perspective view of a state in which a capacitor module, a power semiconductor module, and a mold bus bar are housed in the case shown in FIG.
- FIG. 5 is a sectional view taken along line VV of the power converter shown in FIG.
- FIG. 6 is a cross-sectional view of a part of the VI-VI line of the power converter shown in FIG.
- FIG. 7 (A) is an enlarged perspective view of the periphery of the terminal portion of the power semiconductor module shown in FIG. 5, and FIG.
- FIG. 7 (B) is a circuit diagram showing an example of a circuit built in the power semiconductor module 30. is there.
- FIG. 8 is a plan view of FIG. 4 as viewed from above the case.
- 9 (A) is an enlarged view of the region IXa of FIG. 8, and
- FIG. 9 (B) shows the arrangement of each terminal of the power semiconductor module 30 and the terminal portion of each bus bar in the region IXb of FIG. 9 (A).
- FIG. 10 shows a main part of FIG. 6 and is a diagram for explaining a spatial distance and a creepage distance in the present embodiment.
- FIG. 11 shows a main part of FIG. 9A and is a diagram for explaining the position of the protruding portion of the power semiconductor module on a plane.
- FIG. 12 is a plan view of the mounting structure of the power conversion device and the motor generator.
- FIG. 13 is a sectional view taken along line XIII-XIII of FIG.
- FIG. 1 is a diagram showing an example of a circuit diagram of the power conversion device of the present invention.
- the power conversion device of the present invention can be applied to a hybrid vehicle or a pure electric vehicle.
- the power conversion device of the present invention is suitable as a power conversion device for driving a vehicle such as an automobile or a truck, but other power conversion devices such as a power conversion device for trains, ships, aircraft, etc., and factory equipment. It is also applicable to industrial power converters used as control devices for electric motors that drive, or household power converters used as control devices for electric motors that drive home solar power generation systems and household appliances. It is possible.
- the power conversion device 200 includes an inverter device 140 and a smoothing capacitor module 500.
- a battery 136 is electrically connected to the inverter device 140.
- the capacitor module 500 provided between the battery 136 and the inverter device 140 smoothes the direct current.
- the smoothing capacitor module 500 has a positive electrode side capacitor terminal 506 and a negative electrode side capacitor terminal 504.
- the smoothing capacitor module 500 is electrically connected to the battery 136 via the DC connector 138.
- the inverter device 140 is connected to the positive electrode side capacitor terminal 506 via the DC positive electrode side terminal 314, and is connected to the negative electrode side capacitor terminal 504 via the DC negative electrode side terminal 316.
- the inverter device 140 includes an inverter circuit 144 and a control unit 170.
- the control unit 170 includes a driver circuit 174 that drives and controls the inverter circuit 144, and a control circuit 172 that supplies a control signal to the driver circuit 174 via a signal line 176.
- a motor generator 192 is connected to the output side of the inverter device 140.
- the inverter circuit 144 corresponds to each phase winding of the armature winding of the motor generator 192 with the upper and lower arm series circuit 150 including the IGBT 328 and the diode 156 operating as the upper arm and the IGBT 330 and the diode 166 operating as the lower arm. Then, three phases (U phase, V phase, W phase) are provided.
- IGBT is an abbreviation for an insulated gate type bipolar transistor.
- Each upper and lower arm series circuit 150 has an AC terminal 159 connected to its midpoint portion (intermediate electrode 169). The AC terminal 159 is connected to the AC connector 188 by the AC output side connecting conductor 231. Further, the AC connector 188 is connected to the motor generator 192 by the relay AC connection conductor 241.
- the collector electrode 153 of the IGBT 328 of the upper arm is electrically connected to the positive electrode side capacitor terminal 506 of the capacitor module 500 via the positive electrode terminal 157 by the DC positive electrode side connecting conductor 221.
- the emitter electrode of the IGBT 330 of the lower arm is electrically connected to the negative electrode side capacitor terminal 504 of the capacitor module 500 via the negative electrode terminal 158 by the DC negative electrode side connecting conductor 211.
- the control unit 170 has a driver circuit 174 that drives and controls the inverter circuit 144, and a control circuit 172 that supplies a control signal to the driver circuit 174 via a signal line 176.
- the IGBT 328 and the IGBT 330 operate in response to the drive signal output from the control unit 170, and convert the DC power supplied from the battery 136 into three-phase AC power. This converted power is supplied to the armature winding of the motor generator 192.
- the IGBT 328 includes a collector electrode 153, a gate electrode 154, and an emitter electrode 155 for signals. Further, the IGBT 330 includes a collector electrode 163, an emitter electrode 165 for signals, and a gate electrode 164.
- the diode 156 is electrically connected in parallel with the IGBT 328. Further, the diode 166 is electrically connected in parallel with the IGBT 330.
- a MOSFET metal oxide semiconductor type electric field effect transistor
- the control circuit 172 includes a microcomputer (hereinafter, referred to as a "microcomputer") for arithmetically processing the switching timings of the IGBTs 328 and 330.
- a microcomputer for arithmetically processing the switching timings of the IGBTs 328 and 330.
- the target torque value required for the motor generator 192 As input information to the microcomputer, the target torque value required for the motor generator 192, the current value supplied from the upper and lower arm series circuit 150 to the armature winding of the motor generator 192, and the magnetic pole of the rotor of the motor generator 192. The position has been entered.
- the target torque value is based on a command signal output from a higher-level control device (not shown).
- the current value is detected based on the detection signal output from the current sensor 180 via the signal line 182.
- the magnetic pole position is detected based on a detection signal output from a rotating magnetic pole sensor (not shown) provided in the motor generator 192.
- a detection signal output from a rotating magnetic pole sensor not shown
- the case of detecting the current values of three phases will be described as an example, but the current values of two phases may be detected.
- FIG. 2 is an external perspective view of the power conversion device according to the embodiment of the present invention
- FIG. 3 is an exploded perspective view of the power conversion device shown in FIG.
- the power conversion device 200 has a substantially rectangular parallelepiped housing including a cover 251 and a case 252, and a water channel cover 253.
- the cover 251 and the case 252, and the water channel cover 253 are each made of a metal such as an aluminum alloy.
- the case 252 is formed with a semiconductor module accommodating portion 601 accommodating six power semiconductor modules 30 and a capacitor module accommodating portion 602 accommodating the capacitor module 500.
- the case 252 is formed with flow paths (not shown) for cooling the six power semiconductor modules 30 housed in the semiconductor module housing unit 601.
- the case 252 functions as a flow path forming body. have.
- the water channel cover 253 covers the lower surface of the case 252 opposite to the cover 251 side, and is watertightly attached to the case 252.
- An input / output pipe (not shown) is inserted through the water channel cover 253, and a refrigerant such as cooling water is supplied to the flow path of the case 252 via the water channel cover 253.
- a current sensor 180 and an AC terminal member 60 are attached to the opposite surface side of one side surface of the cover 251.
- Each power semiconductor module 30 has a module case 31 (see FIG. 6) and a terminal portion 33 (see FIG. 7), and a sealing material 82 (see also FIG. 6) is wound around the outer periphery of the module case 31. Has been done.
- a metal member 50 is arranged above each power semiconductor module 30. The metal member 50 is provided with six openings 51 for inserting the terminal portions 33 of each power semiconductor module 30.
- the mold bus bar 40 is arranged on the capacitor module 500 housed in the capacitor module housing part 602 of the case 252 and the power semiconductor module 30 housed in the semiconductor module housing part 601.
- the mold bus bar 40 has a large number of connection terminal portions 270 (see FIG. 9).
- the control circuit board 70 is arranged inside the cover 251. On the control circuit board 70, electronic components constituting the control unit 170 shown in FIG. 1 are mounted. The control circuit board 70 is held by the board base 81. The substrate base 81 is fixed to a boss portion provided on the case 252 by a fastening member (not shown).
- FIG. 4 is a perspective view of a state in which a capacitor module, a power semiconductor module, and a mold bus bar are housed in the case shown in FIG. 3, and FIG. 5 is a VV line cross section of the power conversion device shown in FIG. It is a figure. However, in FIG. 5, the cover 251, the control circuit board 70, the substrate base 81, and the insulating material 46 shown in FIG. 1 are not shown.
- the mold bus bar 40 is fixed to the case 252 by the fastening member above the capacitor module 500 and above the power semiconductor module 30 housed in the case 252.
- a metal member 50 is interposed between the power semiconductor module 30 and the mold bus bar 40 (see FIG. 6).
- the capacitor module 500 is composed of a plurality of capacitor elements 501 (exemplified as 12 in FIG. 3).
- the mold bus bar 40 has a resin portion 44, a negative electrode side bus bar 41, a positive electrode side bus bar 42, and an AC side bus bar 43. That is, the mold bus bar 40 is a member formed by insert mold molding with the negative electrode side bus bar 41, the positive electrode side bus bar 42, and the AC side bus bar 43 as insert members.
- the negative electrode side bus bar 41, the positive electrode side bus bar 42, and the AC side bus bar 43 correspond to the DC negative electrode side connecting conductor 211, the DC positive electrode side connecting conductor 221 and the AC output side connecting conductor 231 in FIG. 1, respectively.
- the negative electrode side bus bar 41 and the positive electrode side bus bar 42 are connected to each capacitor element 501 housed in the capacitor module housing unit 602, respectively.
- the negative electrode side bus bar 41, the positive electrode side bus bar 42, and the AC side bus bar 43 are connected to the terminal portion 33 of each power semiconductor module 30.
- the terminal unit 33 includes a plurality of power supply terminals and a plurality of signal terminals, the details of which will be described later.
- a current sensor 180 and an AC terminal member 60 are attached to the case 252.
- a relay AC bus bar 61 (see also FIG. 13) is attached to the AC terminal member 60.
- the relay AC bus bar 61 corresponds to the relay AC connection conductor 241 of FIG.
- the relay AC bus bar 61 extends in the vicinity of the current sensor 180 and is connected to the AC side bus bar 43.
- the negative electrode side bus bar 41 and the AC side bus bar 43 each have a plurality of exposed portions 41a and 43a (see FIG. 4) exposed from the resin portion 44. As shown in FIG. 4, the exposed portion 41a of the negative electrode side bus bar 41 and the exposed portion 43a of the AC side bus bar 43 are recessed inward from the upper surface 44a of the resin portion 44, respectively. In other words, there is a gap between the upper surface 44a of the resin portion 44 and the exposed portion 41a of the negative electrode side bus bar 41 or the exposed portion 43a of the AC side bus bar 43. On the other hand, the upper and lower surfaces of the positive electrode side bus bar 42 and the lower surface of the AC side bus bar 43 are covered with the resin portion 44.
- FIG. 7 (A) is an enlarged perspective view of the periphery of the terminal portion of the power semiconductor module shown in FIG. 5, and FIG. 7 (B) is a circuit diagram showing an example of a circuit built in the power semiconductor module 30. is there.
- the power semiconductor module 30 has a terminal portion 33 that projects outward from the module case 31.
- the terminal unit 33 includes a plurality of power supply terminals and a plurality of signal terminals as shown below.
- the power semiconductor module 30 contains two IGBTs 328 and 330 and two diodes 156 and 166.
- the IGBT 328 and the diode 156 form an upper arm circuit.
- the IGBT 330 and the diode 166 form a lower arm circuit.
- the DC positive electrode side terminal 101 is connected to the collector electrode 153 of the IGBT 328 and the cathode electrode of the diode 156.
- the DC negative electrode side terminal 103 is connected to the emitter electrode 165 of the IGBT 330 and the anode electrode of the diode 166.
- the DC positive electrode side terminal 101 is formed by branching into two as branch terminals 101a and 101b, and is electrically connected inside the power semiconductor module 30.
- the DC negative electrode side terminal 103 is formed by branching into two as branch terminals 103a and 103b, and is electrically connected inside the power semiconductor module 30.
- the gate electrodes 154 and 164 of the IGBTs 328 and 330 are connected to the gate terminals 111 and 121, which are signal terminals, respectively, and the emitter electrodes 155 and 165 of the IGBTs 328 and 330 are connected to the emitter terminals 112 and 122 which are signal terminals, respectively. Has been done.
- the gate terminals 111 and 121 and the emitter terminals 112 and 122 are connected to the control unit 170 (see FIG. 1).
- the four signal terminals 113, 123 to 125 which are not shown in FIG. 7B, are terminals for sensor signals for detecting the overcurrent and overtemperature of the IGBTs 328 and 330. Is.
- FIG. 6 is a cross-sectional view of a part of the VI-VI line of the power converter shown in FIG.
- the case 252 is provided with a semiconductor module accommodating portion 601 for accommodating the power semiconductor module 30.
- a partition portion 252b is provided in the semiconductor module accommodating portion 601.
- the power semiconductor module 30 is accommodated on both sides of the partition portion 252b of the semiconductor module accommodating portion 601.
- the power semiconductor module 30 has a metal module case 31 having a plurality of heat radiation fins 31a.
- an electronic component structure 32 in which the IGBTs 328 and 330 and the diodes 156 and 166 (only the IGBT 328 is shown in FIG. 6) are integrated with a resin is housed.
- a terminal assembly 34 having a terminal portion 33 shown in FIG. 7 is housed.
- the electronic component structure 32 and the terminal assembly 34 are fixed in the module case 31 by the resin 36 filled in the module case 31.
- a metal member 50 is arranged on the upper part of the power semiconductor module 30.
- the metal member 50 is fixed to the case 252 by a fastening member (not shown), and the power semiconductor module 30 is pressed against and fixed to the water channel cover 253 fixed to the bottom of the case 252.
- the metal member 50 is formed into a corrugated cross-section to have elasticity, and the power semiconductor module 30 is pressed against the water channel cover 253 by the elastic force of the metal member 50.
- the power semiconductor module 30 may be held at the bottom of the case 252.
- a flow path through which a refrigerant such as cooling water flows is formed in the semiconductor module housing portion 601 in which the power semiconductor module 30 is housed.
- a sealing material 82 is interposed between the module case 31 and the case 252, and the module case 31 and the case 252 have a watertight structure.
- a mold bus bar 40 is arranged above the metal member 50 with a gap from the metal member 50. That is, a space is provided between the metal member 50 and the mold bus bar 40.
- the terminal portion 33 of the power semiconductor module 30 is inserted through the opening 51 of the metal member 50 and extends upward.
- the gate terminals 111 and 121, the emitter terminals 112 and 122, and the signal terminals 113 and 123 to 125, which are the signal terminals of the terminal portions 33 are provided on the control circuit board 70 via the board base 81. Connected to wiring (not shown).
- the DC positive side terminal 101 which is a power supply terminal
- the DC negative side terminal 103, and the AC output terminal 102 which is an output terminal
- FIG. 8 is a plan view of FIG. 4 as viewed from above the case
- FIG. 9A is an enlarged view of the region IXa of FIG. 8
- FIG. 9B is the region IXb of FIG. 9A.
- It is a schematic diagram which shows the arrangement of each terminal of the power semiconductor module 30 and the terminal part of each bus bar in.
- each power semiconductor module 30 is arranged as a pair facing each other with a partition portion 252b (see FIG. 6) of the case 252 interposed therebetween, and three power semiconductor modules 30 are arranged in the semiconductor module accommodating portion 601. Contains a pair of semiconductor modules.
- the negative electrode side bus bar 41 has a main body portion 261 extending over the capacitor module 500 and an extending portion 262 extending between the power semiconductor modules 30 of each pair.
- the pair of power semiconductor modules 30 are arranged close to each other, and the distance between the pair of power semiconductor modules 30 is small. Therefore, the width of the extending portion 262 (the length in the direction orthogonal to the extending direction) is smaller than the width of the main body portion 261.
- the positive electrode side bus bar 42 which extends between the main body portion extending on the capacitor module 500 and the power semiconductor module 30 of each pair, and has a width smaller than that of the main body portion. And have.
- the AC side bus bar 43 also has an extending portion 264 extending between the power semiconductor modules 30 of each pair and a main body portion 263 provided outside between the power semiconductor modules 30 of each pair.
- two pairs of negative electrode side terminal portions 271 are formed on the negative electrode side bus bar 41, and two pairs of positive electrode side terminal portions 272 are formed on the positive electrode side bus bar 42. Is formed.
- the two pairs of negative electrode side terminal portions 271 are connected to the branch terminals 103a and 103b of the DC negative electrode side terminal 103 of the power semiconductor module 30, for example, by welding.
- the two pairs of positive electrode side terminal portions 272 are connected to the branch terminals 101a and 101b of the DC positive electrode side terminal 101 of the power semiconductor module 30, for example, by welding.
- a pair of AC side terminal portions 273 are formed on the AC side bus bar 43.
- the pair of AC side terminal portions 273 are joined to the AC output terminal 102 of the power semiconductor module 30 by, for example, welding.
- the two pairs of the negative electrode side terminal portion 271, the positive electrode side terminal portion 272, and the AC side terminal portion 273 form a connection terminal portion 270 of the mold bus bar 40.
- the insulating material 46 (see FIG. 3) is provided with a storage space for accommodating the terminal portions 271, 272, and 273, and the terminal portions 271, 272, and 273 of each connection terminal portion 270 are provided with the insulating material 46. It is covered in a state of being housed in the storage space of the insulating material 46.
- connection structure between the mold bus bar 40 and the terminal portion 33 of the power semiconductor module 30 will be described with reference to FIG.
- the branch terminal 103a is simply referred to as the DC negative electrode side terminal 103.
- Each negative electrode side terminal portion 271 of the negative electrode side bus bar 41 is exposed from the resin portion 44 at the end portion in the width direction (direction orthogonal to the extending direction) of the extending portion 262, and is bent in the tilting direction at the root portion 275. Has been done.
- the negative electrode side terminal portion 271 is connected to the DC negative electrode side terminal 103 of the power semiconductor module 30 at the tip end portion.
- connection structure between the negative electrode side terminal portion 271 of the negative electrode side bus bar 41 and the branch terminal 103a of the DC negative electrode side terminal 103 of the power semiconductor module 30 has been described.
- the bonding structure between the negative electrode side terminal portion 271 of the negative electrode side bus bar 41 and the branch terminal 103b of the DC negative electrode side terminal 103 is the same as described above.
- the connection structure between the AC side terminal portion 273 of 43 and the AC output terminal 102 of the power semiconductor module 30 is the same as described above.
- the partition portion 252b of the case 252 is formed with a protruding portion 281 that protrudes toward the mold bus bar 40 from the upper surface 257 of the power semiconductor module 30.
- a gap is provided between the metal member 50 and the mold bus bar 40, and in FIG. 6, the protruding portion 281 is illustrated so as to protrude from the upper surface of the metal member 50. However, the protruding portion 281 does not have to protrude from the upper surface of the metal member 50.
- a heat conductive material 282 such as a heat conductive grease or a sheet is interposed between the protrusion 281 and the mold bus bar 40, and the case 252 and the mold bus bar 40 are thermally conductively bonded, that is, thermally coupled. Has been done.
- the protrusion 281 is arranged between a pair of power semiconductor modules 30 arranged so as to sandwich the partition portion 252b.
- the thermal coupling between the protruding portion 281 and the mold bus bar 40 may have a structure in which the protruding portion 281 and the mold bus bar 40 are in direct contact with each other without interposing the heat conductive material 282.
- FIG. 11 shows a main part of FIG. 9A and is a diagram for explaining the position of the protruding portion of the power semiconductor module on a plane.
- the protruding portion 281 of the power semiconductor module 30 is parallel to the terminal portion 33 between the terminal portion 33 of one power semiconductor module 30 and the terminal portion 33 of the other power semiconductor module 30. And is arranged so as to overlap the extending portion 262 of the negative side bus bar 41 and the extending portion 264 of the AC side bus bar 43 in a plan view.
- the power semiconductor module 30 becomes hot due to heat generation of power semiconductor elements such as IGBT 328 and 330, and heat is conducted to the capacitor module 500 via the mold bus bar 40. Therefore, the temperature of each capacitor element 501 of the capacitor module 500 may rise and exceed the heat resistant temperature. In the present embodiment, the heat transferred to the capacitor module 500 can be suppressed by increasing the spatial distance and the creepage distance between the case 252 and the mold bus bar 40. This will be described below.
- FIG. 10 shows a main part of FIG. 6 and is a diagram for explaining a spatial distance and a creepage distance in the present embodiment.
- the power semiconductor module 30 on the left side is referred to as the first power semiconductor module 30a
- the power semiconductor module 30 on the right side is referred to as the second power semiconductor module 30b.
- a protruding portion 281 is provided at the upper end of the partition portion 252b of the case 252.
- the upper surface 281a of the projecting portion 281 projects toward the mold bus bar 40 from the upper surface 257 of the first and second power semiconductor modules 30b.
- the spatial distance Cl between the root portion 275 where the negative electrode side terminal portion 271 is exposed from the resin portion 44 of the mold bus bar 40 and the first and second power semiconductor modules 30a and 30b is determined by the mold bus bar 40.
- the protruding portion 281 is larger than the space distance in the case of the structure arranged directly on the upper surface 257 of the power semiconductor module 30 by the amount of protrusion from the upper surface 257 of the first and second power semiconductor modules 30b.
- the protruding portion 281 provided in the partition portion 252b of the case 252 is arranged between the first power semiconductor module 30a and the second power semiconductor module 30b.
- the creepage distance is the sum of the horizontal distance along the lower surface 40a of the mold bus bar 40 from the protruding portion 281 to the root portion 275 of the negative electrode side terminal portion 271 and the distance in the direction orthogonal to the horizontal direction.
- the protrusion 281 is located between the second DC negative electrode side terminal 103 of the first power semiconductor module 30a and the DC negative electrode side terminal 103 of the second power semiconductor module 30b. Therefore, the horizontal distance of the creepage distance is not zero.
- the horizontal distance of the creepage distance is almost zero.
- the creepage distance Cr1 from the protruding portion 281 of the case 252 to the root portion 275 of the negative electrode side terminal portion 271 of the first power semiconductor module 30a is such that the mold bus bar 40 is directly on the upper surface 257 of the power semiconductor module 30. It is larger than the creepage distance in the case of the arranged structure.
- the creepage distance Cr2 from the protruding portion 281 of the case 252 to the root portion 275 of the negative electrode side terminal portion 271 of the second power semiconductor module 30b is such that the mold bus bar 40 is directly on the upper surface 257 of the power semiconductor module 30. It is larger than the creepage distance in the case of the arranged structure.
- the power conversion device 200 has a space between the root portion 275 where the negative electrode side terminal portion 271 of the mold bus bar 40 is exposed from the resin portion 44 and the power semiconductor module 30 as compared with the conventional structure.
- the distance and creepage distance can be increased. Therefore, the heat transferred from the power semiconductor module 30 to the mold bus bar 40 can be reduced. As a result, the amount of heat transferred from the power semiconductor module 30 to the capacitor element 501 via the mold bus bar 40 is reduced, and the temperature of the capacitor element 501 can be suppressed from becoming high.
- the protruding portion 281 is arranged near the center of the DC negative electrode side terminal 103 of the first power semiconductor module 30a and the DC negative electrode side terminal 103 of the second power semiconductor module 30b.
- the position of the protruding portion 281 is the position of the first power semiconductor module 30a. It does not have to be near the center of the DC negative electrode side terminal 103 of the second power semiconductor module 30b and the DC negative electrode side terminal 103 of the second power semiconductor module 30b.
- the spatial distance Cl from the root portion 275 of the negative electrode side terminal portion 271 to the upper surface 257 of the power semiconductor module 30 also satisfies the spatial distance defined in the international standard such as IEC602431-1 so that the upper surface 281a of the protruding portion 281a is satisfied. It is preferable to set the position of.
- connection structure between the DC negative side terminal 103 of the power semiconductor module 30 and the negative side terminal portion 271 of the negative side bus bar 41 has been illustrated.
- connection structure between the DC positive electrode side terminal 101 of the power semiconductor module 30 and the positive electrode side terminal portion 272 of the positive electrode side bus bar 42, and the AC side terminal portion 273 of the AC side bus bar 43 and the AC output terminal 102 of the power semiconductor module 30 The connection structure of is the same.
- FIG. 12 is a plan view of the mounting structure of the power converter and the motor generator
- FIG. 13 is a sectional view taken along line XIII-XIII of FIG.
- the motor generator is not shown. In the following, it will be described with reference to FIGS. 3 to 5.
- a current sensor 180 and an AC terminal member 60 are attached to the side portion of the case 252 on the side where the semiconductor module accommodating portion 601 is formed.
- a plurality of relay AC bus bars 61 are attached to the AC terminal member 60.
- the relay AC bus bar 61 corresponds to the relay AC connection conductor 241 of FIG.
- the relay AC bus bar 61 is electrically connected to the motor generator 192.
- the relay AC bus bar 61 is inserted in the vicinity of the current sensor 180 and is connected to the AC side bus bar 43.
- the AC terminal member 60 to which the relay AC bus bar 61 is attached is thermally conductively coupled to the case 252, that is, thermally coupled.
- the motor generator 192 generates a large amount of heat when driven.
- the heat generated by the motor generator 192 is thermally conducted to the mold bus bar 40 via the relay AC bus bar 61.
- the relay AC bus bar 61 becomes hot, heat is conducted through the AC bus bar 43, and the electronic components in the power conversion device 200 such as the capacitor module 500 become hot.
- the relay AC bus bar 61 since the relay AC bus bar 61 is heat-bonded to the case 252, the relay AC bus bar 61 is cooled by the cooling structure in which the refrigerant is supplied through the case 252 and is connected to the mold bus bar 40. It is possible to suppress the temperature of electronic components in the power conversion device 200, such as the capacitor module 500, from becoming high.
- the power conversion device 200 includes a capacitor module 500, first and second power semiconductor modules 30, a case 252 having a capacitor module accommodating portion 602 and a semiconductor module accommodating portion 601, a resin portion 44, and a negative electrode side bus bar. It is provided with a mold bus bar 40 having 41.
- the negative electrode side bus bar 41 is exposed from the capacitor connection portion connected to the capacitor element 501 constituting the capacitor module 500 and the resin portion 44, and is connected to the DC negative electrode side terminal 103 of the first power semiconductor module 30. It has a negative electrode side terminal portion 271 and a second negative electrode side terminal portion 271 connected to the negative electrode side terminal portion 271 of the second power semiconductor module 30.
- the partition portion 252b of the case 252 is provided with a protruding portion 281 that protrudes toward the mold bus bar 40 from the upper surface 257 of the first power semiconductor module 30 and the second power semiconductor module 30 and thermally couples to the mold bus bar 40.
- the protruding portion 281 is formed by a base portion 275 of an exposed portion where the first negative electrode side terminal portion 271 is exposed from the resin portion 44 and a root portion 275 of an exposed portion where the second negative electrode side terminal portion 271 is exposed from the resin portion 44. It is placed in between. Therefore, the spatial distance and creepage distance from the root portion 275 where the negative electrode side terminal portion 271 of the negative electrode side bus bar 41 is exposed from the resin portion 44 to the power semiconductor module 30 can be increased.
- the temperature rise of the capacitor can be suppressed by increasing the spatial distance and creepage distance between the exposed portion of the mold bus bar 40 from the resin portion 44 and the power semiconductor module 30.
- the heat transferred from the power semiconductor module 30 to the mold bus bar 40 is reduced, and the temperature of the capacitor element 501 connected to the mold bus bar 40 can be suppressed from becoming high.
- the mold bus bar 40 includes the AC side bus bar 43, and the protruding portion 281 overlaps a part of the AC side bus bar 43 in a plan view seen from above the protruding portion 281.
- the AC side terminal portion 273 of the AC side bus bar 43 is also formed in the same manner as the negative electrode side terminal portion 271 of the negative electrode side bus bar 41. Therefore, the heat transferred from the power semiconductor module 30 to the AC side bus bar 43 of the mold bus bar 40 is reduced, and the temperature of the capacitor element 501 connected to the mold bus bar 40 can be suppressed from becoming high.
- a relay AC bus bar 61 connected to the AC side bus bar 43 is further provided, and the relay AC bus bar 61 is heat-coupled to the case 252. Therefore, the heat generated by an external device such as the motor generator 192 connected to the relay AC bus bar 61 is cooled by the cooling structure via the case 252 to which the relay AC bus bar 61 is thermally coupled, and is connected to the mold bus bar 40. It is possible to prevent the temperature of electronic components in the power conversion device 200, such as the capacitor module 500, from becoming high.
- the positive / negative electrode side bus bars 42 and 41 and the AC side bus bar 43 are exemplified as a molded bus bar 40 which is insert-molded into the resin portion 44.
- the positive / negative electrode side bus bars 42 and 41 and the AC side bus bar 43 may be fixed to the resin portion 44 by fastening members such as screws and pins.
- the present invention can be applied to a power conversion device 200 including one power semiconductor module 30 and three power semiconductor modules 30.
- the power conversion device 200 is exemplified as an inverter device using the IGBTs 328 and 330. However, it can be applied to an inverter circuit using a thyristor, a GTO (Gate Turn Off Thiristor), or the like instead of the IGBTs 328 and 330.
- a thyristor a thyristor
- GTO Gate Turn Off Thiristor
- the present invention can be applied not only to an inverter device that performs DC-AC conversion, but also to other power conversion devices such as a matrix converter that performs AC-AC conversion.
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Abstract
Description
本発明の第2の態様によると、電力変換装置の製造方法は、コンデンサをケースのコンデンサ収容部に収容すると共に、仕切り部が設けられた前記ケースの半導体モジュール収容部に、一面から突出する入力用または出力用の端子をそれぞれ有する第1のパワー半導体モジュールおよび第2のパワー半導体モジュールを、前記ケースの前記仕切り部の両側に収容することと、樹脂部と接続導体とが一体的に設けられ、前記接続導体が、前記コンデンサに接続されるコンデンサ接続部を有すると共に、前記樹脂部から露出され、前記第1のパワー半導体モジュールの前記端子に接続される第1端子部および前記第2のパワー半導体モジュールの前記端子に接続される第2端子部を有する接続用部材を、第1のパワー半導体モジュールおよび第2パワー半導体モジューの前記一面上に配置することと、を備え、前記仕切り部には、前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールの前記一面よりも前記接続用部材側に突出し、前記接続用部材に熱結合する突出部が設けられており、前記接続用部材を、前記第1のパワー半導体モジュールおよび前記第2パワー半導体モジューの前記一面上に配置することは、前記突出部を、前記第1端子部が前記樹脂部から露出する露出部の第1根元部と前記第2端子部が前記樹脂部から露出する露出部の第2根元部との間に配置して、前記接続用部材に熱結合することを含む。
図1は、本発明の電力変換装置の回路図の一例を示す図である。
本発明の電力変換装置は、ハイブリッド用の自動車や、純粋の電気自動車に適用可能である。また、本発明の電力変換装置は、自動車やトラック等の車両駆動用電力変換装置として好適であるが、これら以外の電力変換装置、例えば電車や船舶、航空機などの電力変換装置、さらに工場の設備を駆動する電動機の制御装置として用いられる産業用電力変換装置、或いは家庭の太陽光発電システムや家庭の電化製品を駆動する電動機の制御装置に用いられたりする家庭用電力変換装置に対しても適用可能である。
図2に図示されるように、電力変換装置200は、カバー251と、ケース252と、水路カバー253により構成されるほぼ直方体状の筐体を有する。カバー251、ケース252、水路カバー253は、それぞれ、アルミニウム合金等の金属により形成されている。
カバー251の一側面の対向面側には、電流センサ180および交流端子部材60が取り付けられる。
上述したように、ケース252内に収容されたコンデンサモジュール500の上方およびパワー半導体モジュール30の上方で、モールドバスバー40が締結部材によりケース252に固定されている。パワー半導体モジュール30とモールドバスバー40との間には金属製部材50が介装されている(図6参照)。コンデンサモジュール500は、複数(図3では、12個として例示)のコンデンサ素子501により構成されている。
パワー半導体モジュール30は、モジュールケース31から外部に突出する端子部33を有する。端子部33は、以下に示す、複数の電源用端子および複数の信号端子を含んでいる。
図7(B)に図示されるように、パワー半導体モジュール30には、2つのIGBT328、330と、2つのダイオード156、166とが内蔵されている。IGBT328とダイオード156とは上アーム回路を構成する。IGBT330とダイオード166とは、下アーム回路を構成する。
IGBT328、330のゲート電極154、164は、それぞれ、信号端子であるゲート端子111、121に接続され、IGBT328、330のエミッタ電極155、165は、それぞれ、信号端子であるエミッタ端子112、122に接続されている。
ゲート端子111、121およびエミッタ端子112、122は、制御部170(図1参照)に接続されている。
なお、図7(A)において、図7(B)には図示されていない4つの信号端子113、123~125は、IGBT328、330の過電流や過温度を検出するためのセンサ信号用の端子である。
ケース252には、パワー半導体モジュール30を収容する半導体モジュール収容部601が設けられている。ケース252には、半導体モジュール収容部601内に、仕切り部252bが設けられている。パワー半導体モジュール30は、半導体モジュール収容部601の仕切り部252bの両側に収容される。パワー半導体モジュール30は、複数の放熱フィン31aを有する金属製のモジュールケース31を有する。モジュールケース31内には、IGBT328、330およびダイオード156、166(図6には、IGBT328のみを図示)が樹脂により一体化された電子部品構成体32が収容されている。また、モジュールケース31内には、図7に示す端子部33を有する、端子集合体34が収容されている。電子部品構成体32および端子集合体34は、モジュールケース31内に充填される樹脂36により、モジュールケース31内に固定されている。
なお、パワー半導体モジュール30をケース252の底部で保持する構造としてもよい。
パワー半導体モジュール30の端子部33は、金属製部材50の開口51を挿通されて、上方に延在される。図示はしないが、端子部33のうちの信号端子であるゲート端子111、121、エミッタ端子112、122、信号端子113、123~125は、基板ベース81を介して制御回路基板70に設けられた配線(図示せず)に接続される。端子部33のうちの電源用端子である直流正極側端子101、直流負極側端子103、および出力用端子である交流出力端子102は、モールドバスバー40に接続される。
図8に図示されるように、各パワー半導体モジュール30は、ケース252の仕切り部252b(図6参照)を挟んで対向する対として配置されており、半導体モジュール収容部601内には、3つの半導体モジュール対が収容されている。
負極側バスバー41は、コンデンサモジュール500上に延在する本体部261と、各対のパワー半導体モジュール30間に延在する延在部262とを有する。一対のパワー半導体モジュール30は近接して配置されており、一対のパワー半導体モジュール30間の距離は小さい。このため、延在部262の幅は(延在方向と直交する方向の長さ)は、本体部261の幅よりも小さくなっている。
二対の負極側端子部271、正極側端子部272および交流側端子部273は、モールドバスバー40の接続端子部270を構成する。絶縁材46(図3参照)には、端子部271、272、273を収容する収容空間が設けられており、各接続端子部270の各端子部271、272、273は、絶縁材46により、絶縁材46の収納空間内に収容された状態で覆われる。
負極側バスバー41の各負極側端子部271は、延在部262の幅方向(延在方向に直交する方向)の端部では、樹脂部44から露出され、根元部275で傾め方向に屈曲されている。負極側端子部271は、先端部でパワー半導体モジュール30の直流負極側端子103に接続されている。
図11に図示されるように、パワー半導体モジュール30の突出部281は、一方のパワー半導体モジュール30の端子部33と他方のパワー半導体モジュール30の端子部33との間に、端子部33と平行に延在され、かつ、平面視で、負極側バスバー41の延在部262および交流側バスバー43の延在部264と重なって配置されている。
本実施形態においては、ケース252とモールドバスバー40との空間距離および沿面距離を大きくすることにより、コンデンサモジュール500に伝達される熱を抑制することができる構造となっている。
以下、このことについて説明する。
なお、図10において、向かって左側のパワー半導体モジュール30を第1のパワー半導体モジュール30aとし、向かって右側のパワー半導体モジュール30を第2のパワー半導体モジュール30bとする。
ケース252の仕切り部252bの上端には突出部281が設けられている。突出部281の上面281aは、第1、第2のパワー半導体モジュール30bの上面257よりもモールドバスバー40側に突出している。従って、負極側端子部271がモールドバスバー40の樹脂部44から露出する根元部275と、第1、第2のパワー半導体モジュール30a、30bとの空間距離Clは、いずれも、モールドバスバー40が、直接、パワー半導体モジュール30の上面257に配置される構造の場合の空間距離よりも、突出部281が第1、第2のパワー半導体モジュール30bの上面257から突出している分だけ、大きい。
ケース252の半導体モジュール収容部601が形成された側の側部には、電流センサ180および交流端子部材60が取り付けられている。交流端子部材60には、複数の中継交流バスバー61が取り付けられている。中継交流バスバー61は、図1の中継交流接続導体241に相当する。
本実施形態では、中継交流バスバー61をケース252に熱結合する構造であるため、中継交流バスバー61がケース252をl介して冷媒が供給される冷却構造により冷却され、モールドバスバー40に接続されたコンデンサモジュール500等の、電力変換装置200内の電子部品が高温になるのを抑制することができる。
(1)電力変換装置200は、コンデンサモジュール500と、第1、第2にパワー半導体モジュール30と、コンデンサモジュール収容部602および半導体モジュール収容部601を有するケース252と、樹脂部44と負極側バスバー41を有するモールドバスバー40とを備える。負極側バスバー41は、コンデンサモジュール500を構成するコンデンサ素子501に接続されるコンデンサ接続部と、樹脂部44から露出され、第1のパワー半導体モジュール30の直流負極側端子103に接続される第1の負極側端子部271および第2のパワー半導体モジュール30の負極側端子部271に接続される第2の負極側端子部271を有する。ケース252の仕切り部252bには、第1のパワー半導体モジュール30および第2のパワー半導体モジュール30の上面257よりもモールドバスバー40側に突出し、モールドバスバー40に熱結合する突出部281が設けられ、突出部281は、第1の負極側端子部271が樹脂部44から露出する露出部の根元部275と第2の負極側端子部271が樹脂部44から露出する露出部の根元部275との間に配置されている。このため、負極側バスバー41の、負極側端子部271が樹脂部44から露出する根元部275から、パワー半導体モジュール30までの空間距離および沿面距離を大きくすることができる。つまり、モールドバスバー40の樹脂部44からの露出部とパワー半導体モジュール30間の空間距離および沿面距離を大きくしてコンデンサの温度上昇を抑制することができる。これにより、パワー半導体モジュール30からモールドバスバー40に伝達される熱が低減され、モールドバスバー40に接続されたコンデンサ素子501が高温になるのを抑制することができる。
30a 第1のパワー半導体モジュール
30b 第2のパワー半導体モジュール
40 モールドバスバー(接続用部材)
41 負極側バスバー(接続導体)
42 正極側バスバー(接続導体)
43 交流側バスバー(接続導体)
44 樹脂部
50 金属製部材
200 電力変換装置
211 直流負極側接続導体
221 直流正極側接続導体
231 交流出力側接続導体
241 中継交流接続導体
252 ケース
252b 仕切り部
257 上面(一面)
271 負極側端子部
272 正極側端子部
273 交流側端子部
275 根元部
281 突出部
500 コンデンサモジュール
501 コンデンサ素子(コンデンサ)
601 半導体モジュール収容部
602 コンデンサモジュール収容部
Cl 空間距離
Cr1 沿面距離
Cr2 沿面距離
Claims (7)
- コンデンサと、
一面から突出する入力用または出力用の端子をそれぞれ有する第1のパワー半導体モジュールおよび第2のパワー半導体モジュールと、
前記コンデンサを収容するコンデンサ収容部、前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールを収容する半導体モジュール収容部、および前記第1のパワー半導体モジュールと前記第2のパワー半導体モジュールとの間に設けられた仕切り部を有するケースと、
樹脂部と接続導体とが一体的に設けられ、前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールの前記一面上に配置される接続用部材と、を備え、
前記接続導体は、前記コンデンサに接続されるコンデンサ接続部と、前記樹脂部から露出され、前記第1のパワー半導体モジュールの前記端子に接続される第1端子部および前記第2のパワー半導体モジュールの前記端子に接続される第2端子部を有し、
前記ケースの前記仕切り部には、前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールの前記一面よりも前記接続用部材側に突出し、前記接続用部材に熱結合する突出部が設けられ、
前記突出部は、前記接続用部材に熱結合されると共に、前記第1端子部が前記樹脂部から露出する露出部の第1根元部と前記第2端子部が前記樹脂部から露出する露出部の第2根元部との間に配置されている、電力変換装置。 - 請求項1に記載の電力変換装置において、
前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールの前記一面と、前記接続用部材との間に空間が設けられている、電力変換装置。 - 請求項2に記載の電力変換装置において、
前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールの前記一面上に設けられた金属製部材をさらに備え、
前記空間は、前記金属製部材と前記接続用部材との間に設けられている、電力変換装置。 - 請求項1に記載の電力変換装置において、
前記接続導体は、直流正極側接続導体および直流負極側接続導体を含み、
前記突出部は、前記突出部の上方からみた平面視で、前記直流正極側接続導体の一部または直流負極側接続導体の一部と重なっている、電力変換装置。 - 請求項1に記載の電力変換装置において、
前記接続導体は、交流出力側接続導体を含み、
前記突出部は、前記突出部の上方からみた平面視で、前記交流出力側接続導体の一部と重なっている、電力変換装置。 - 請求項5に記載の電力変換装置において、
前記交流出力側接続導体に接続される中継交流接続導体をさらに備え、
前記中継交流接続導体は、前記ケースに熱結合されている、電力変換装置。 - コンデンサをケースのコンデンサ収容部に収容すると共に、仕切り部が設けられた前記ケースの半導体モジュール収容部に、一面から突出する入力用または出力用の端子をそれぞれ有する第1のパワー半導体モジュールおよび第2のパワー半導体モジュールを、前記ケースの前記仕切り部の両側に収容することと、
樹脂部と接続導体とが一体的に設けられ、前記接続導体が、前記コンデンサに接続されるコンデンサ接続部を有すると共に、前記樹脂部から露出され、前記第1のパワー半導体モジュールの前記端子に接続される第1端子部および前記第2のパワー半導体モジュールの前記端子に接続される第2端子部を有する接続用部材を、第1のパワー半導体モジュールおよび第2パワー半導体モジューの前記一面上に配置することと、を備え、
前記仕切り部には、前記第1のパワー半導体モジュールおよび前記第2のパワー半導体モジュールの前記一面よりも前記接続用部材側に突出し、前記接続用部材に熱結合する突出部が設けられており、
前記接続用部材を、前記第1のパワー半導体モジュールおよび前記第2パワー半導体モジューの前記一面上に配置することは、前記突出部を、前記第1端子部が前記樹脂部から露出する露出部の第1根元部と前記第2端子部が前記樹脂部から露出する露出部の第2根元部との間に配置して、前記接続用部材に熱結合することを含む、電力変換装置の製造方法。
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| JP2024165428A (ja) * | 2023-05-17 | 2024-11-28 | 株式会社豊田自動織機 | 電力供給システム |
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| JP5978151B2 (ja) * | 2013-02-27 | 2016-08-24 | 日立オートモティブシステムズ株式会社 | 電力変換装置 |
| JP2014187149A (ja) * | 2013-03-22 | 2014-10-02 | Hitachi Automotive Systems Ltd | パワーモジュール |
| DE112015004503T5 (de) * | 2014-11-18 | 2017-11-30 | Hitachi Automotive Systems, Ltd. | Leistungsumsetzungsvorrichtung |
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| JP2014171343A (ja) * | 2013-03-05 | 2014-09-18 | Hitachi Automotive Systems Ltd | 両面冷却型電力変換装置 |
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| CN113574787A (zh) | 2021-10-29 |
| US20220158566A1 (en) | 2022-05-19 |
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| JPWO2020195141A1 (ja) | 2021-12-02 |
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