WO2016076040A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
- Publication number
- WO2016076040A1 WO2016076040A1 PCT/JP2015/078434 JP2015078434W WO2016076040A1 WO 2016076040 A1 WO2016076040 A1 WO 2016076040A1 JP 2015078434 W JP2015078434 W JP 2015078434W WO 2016076040 A1 WO2016076040 A1 WO 2016076040A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow path
- refrigerant
- semiconductor module
- power semiconductor
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
- B60H1/00914—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is a bypass of the condenser
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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
- 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
- H05K7/20927—Liquid coolant without phase change
-
- 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
- H10W40/20—Arrangements for cooling
- H10W40/22—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections
-
- 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
- H10W40/40—Arrangements for thermal protection or thermal control involving heat exchange by flowing fluids
- H10W40/47—Arrangements for thermal protection or thermal control involving heat exchange by flowing fluids by flowing liquids, e.g. forced water cooling
-
- 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
- H10W40/70—Fillings or auxiliary members in containers or in encapsulations for thermal protection or control
-
- 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
- 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
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/20—Conductive package substrates serving as an interconnection, e.g. metal plates
-
- 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
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/756—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink
Definitions
- the present invention relates to a power conversion device.
- the power semiconductor module is immersed in the flow path through which the refrigerant flows to improve the cooling performance.
- An object of the present invention is to suppress the bypass of the refrigerant to the cooling unit without deteriorating the productivity.
- a power conversion device includes a power semiconductor module having a semiconductor element, A flow path forming body that forms a flow path in which the power semiconductor module is disposed and an opening connected to the flow path,
- the power semiconductor module has a first fin formed on one surface, and a second fin formed on the other surface facing the one surface across the semiconductor element,
- the flow path forming body has a first refrigerant suppressing portion and a second refrigerant suppressing portion arranged so as to sandwich the first fin therebetween, The first refrigerant suppressing part and the second refrigerant suppressing part overlap with a region where the first fin of the power semiconductor module is not formed when viewed from a direction perpendicular to the one surface of the power semiconductor module.
- productivity and cooling performance can be improved.
- FIG. 5 is a perspective view in which an inlet 442 of a flow path forming body 400 can be seen. 6 is a perspective view showing an outlet 490 of a flow path forming body 400.
- FIG. 2 is an external perspective view of a power semiconductor module 300.
- FIG. 3 is an exploded perspective view of a circuit body 330 excluding a sealing resin 331.
- FIG. 10 is a cross-sectional view of the plane AA in FIG. 9 as viewed from the direction of the arrow.
- FIG. 10 is a cross-sectional view BB of the power semiconductor module 300 and the flow path forming body 400 in FIG. 9.
- FIG. 2 is an external perspective view of the power conversion device 200 according to the present embodiment.
- the power conversion device 200 inputs and outputs a three-phase AC power composed of a U-phase, a V-phase, and a W-phase with a motor generator.
- the power semiconductor module 300 is provided corresponding to each of the three phases of U phase, V phase, and W phase, and inputs and outputs DC power through the positive terminal 311 and the negative terminal 312.
- the power semiconductor module 300 inputs and outputs AC power from the AC terminal 313.
- Signal terminals 314 and 315 receive control signals from the driver circuit.
- the power semiconductor module 300 includes a semiconductor element that performs a conduction or cutoff operation in response to a control signal, and converts supplied DC power into three-phase AC power.
- the power semiconductor module 300 is cooled by the refrigerant supplied from the outside for the heat generated by the operation of the semiconductor element.
- the power conversion device 200 includes a flow path forming body 400 that houses the power semiconductor module 300.
- the flow path forming body 400 includes a first pipe 411 that is an inlet of a refrigerant and a second pipe 412 that is an outlet of the refrigerant.
- the first pipe 411 and the second pipe 412 are press-fitted into the flow path forming body 400.
- the flow path forming body 400 is formed of aluminum or resin.
- FIG. 3 is an exploded perspective view of the power conversion apparatus 200 according to the present embodiment.
- the flow path forming body 400 forms respective openings 451 for inserting the three power semiconductor modules 300.
- the power semiconductor module 300 is inserted into the opening 451 in the insertion direction 370.
- the power semiconductor module 300 includes a seal member 351 for sealing the opening 451.
- the seal member 351 is provided in the seal part 350 of the power semiconductor module 300.
- the seal portion 350 may be sealed using an adhesive, brazing, or welding.
- 1 is a cross-sectional view X of the power conversion device 200 in FIG.
- FIG. 4 is a cross-sectional view Y cut along the plane Y of the power conversion device 200 in FIG. 2.
- the flow path forming body 400 includes a flow path 441 through which a refrigerant flows.
- the channel 441 is formed so as to be connected to the opening 451.
- the inlet portion 442 is formed on the side close to the seal portion 452 of the flow path forming body 400, that is, on the side close to the seal portion 350 of the power semiconductor module 300.
- the first flow path 443 is formed on the one surface 354 side of the power semiconductor module 300.
- the first flow path 443 is formed so that the refrigerant flows in a direction away from the seal portion 452.
- the second flow path 444 is formed on the other surface 355 side of the power semiconductor module 300.
- the second flow path 444 is formed so that the refrigerant flows in a direction approaching the seal portion 452.
- the folded flow path 445 is formed in the direction opposite to the opening 451 of the flow path forming body 400.
- the folded channel 445 is disposed so as to connect the first channel 443 and the second channel 444.
- the refrigerant flows through the first flow path 443, the return flow path 445, and the second flow path 444, and cools the power semiconductor module 300.
- the first flow path 443 and the second flow path 444 are formed so that the flow direction of the refrigerant is parallel to the insertion direction 370.
- the first power semiconductor module 300a, the second power semiconductor module 300b, and the third power semiconductor module 300c correspond to any of the U phase, the V phase, and the W phase.
- the first power semiconductor module 300a, the second power semiconductor module 300b, and the third power semiconductor module 300c have the same structure as the power semiconductor module 300 shown in FIGS.
- the first pipe 411 is provided on the side surface of the flow path forming body 400 and includes a flow path introducing portion 401 that supplies a refrigerant to the flow path 441.
- the channel introduction part 401 is disposed at a substantially central part of the side surface of the channel forming body 400 and is connected to the inlet part 442 to supply the refrigerant in the direction of the arrow.
- the second pipe 412 is disposed on the side surface of the flow path forming body 400 and includes a flow path derivation unit 402 that supplies a refrigerant to the flow path 441.
- the flow path lead-out part 402 is disposed at a substantially central part of the side surface of the flow path forming body 400 and is connected to the second flow path 444 to supply the refrigerant in the direction of the arrow.
- FIG. 5 is a perspective view in which the inlet portion 442 of the flow path forming body 400 can be seen.
- FIG. 6 is a perspective view in which the outlet 490 of the flow path forming body 400 can be seen.
- the flow path forming body 400 stores the first flow path space 441a for storing the first power semiconductor module 300a, the second flow path space 441b for storing the second power semiconductor module 300b, and the third power semiconductor module 300c.
- the flow path forming body 400 forms flow path walls among the first flow path space 441a, the second flow path space 441b, and the third flow path space 441c.
- the flow path forming body 400 includes a first connection part 446 that connects the flow path introducing part 401 and the first flow path space 441a.
- the flow path forming body 400 includes a second connecting portion 447 that connects the first flow path space 441a and the second flow path space 441b.
- the flow path forming body 400 includes a third connecting portion 448 that connects the second flow path space 441a and the third flow path space 441b.
- the flow path forming body 400 includes a fourth connection part 449 that connects the third flow path space 441 c and the flow path lead-out part 402.
- FIG. 7 is an external perspective view of the power semiconductor module 300.
- the power semiconductor module 300 inputs and outputs DC power through the positive terminal 311 and the negative terminal 312.
- AC terminal 313 outputs AC power.
- Signal terminals 314 and 315 receive control signals from the driver circuit.
- Sealing resin 331 seals a part of positive electrode terminal 311, a part of negative electrode terminal 312, a part of signal terminals 314 and 315, and a semiconductor element.
- the case 341 stores a part of the sealing resin 331.
- the case 341 includes a first heat radiating base portion 344a in which the first fins 343a are formed, a second heat radiating base portion 344b which is disposed to face the first heat radiating base portion 344a and forms the second fins 343b, And a frame body 342 connecting the heat radiation base part 344a and the second heat radiation base part 344b.
- the first fin 343 a is formed on one surface 354 of the power semiconductor module 300.
- the second fin 343 b is formed on one surface 355 of the power semiconductor module 300.
- the frame body 342 is connected to the first heat dissipation base portion 344a via the connection portion 305. Similarly, the second heat radiating base portion 344b is connected to the frame body 342.
- the first fin 343a, the second fin 343b, the first heat dissipation base portion 344a, and the second heat dissipation base portion 344b are preferably made of a material having good thermal conductivity, and are formed of pure aluminum material, pure copper, copper alloy, or the like.
- the frame body 342 is preferably made of a material that is easy to produce and has rigidity, and is formed of an aluminum die-cast material, duralumin, or the like.
- the connecting portion 305 is joined by FSW or brazing, and seals the frame body 342 and the first heat dissipation base portion 344a, and the frame body 342 and the second heat dissipation base portion 344b.
- the seal here may be an O-ring or an adhesive.
- FIG. 8 is an exploded perspective view of the circuit body 330 with the sealing resin 331 removed.
- the circuit body 330 constitutes an upper arm and a lower arm of the inverter circuit, and includes an upper arm side semiconductor element 323 and a lower arm side semiconductor element 324.
- the upper arm side semiconductor element 323 includes an IGBT 321U and a diode 322U.
- the IGBT 321U and the diode 322U are connected to the positive-side conductor plate 334 and the first intermediate conductor plate 335 via the solder 360.
- the IGBT 321U is connected to the signal terminal 314 via the bonding wire 363, and receives a control signal from the driver circuit via the signal terminal 314.
- the lower arm side semiconductor element 324 includes an IGBT 321L and a diode 322L.
- the IGBT 321L and the diode 322L are connected via the second intermediate conductor plate 336, the negative electrode conductor plate 337, and the solder 360.
- the IGBT 321L is connected to the signal terminal 315 via the bonding wire 363 and receives a control signal from the driver circuit via the signal terminal 314.
- MOSFET metal oxide semiconductor field effect transistor
- the first intermediate conductor plate 335 is connected to the second intermediate conductor plate 336 via the solder 361.
- the negative electrode side conductor plate 337 includes an intermediate DC negative electrode terminal 316.
- the intermediate DC negative terminal 316 is connected to the negative terminal 312 via the solder 362.
- the positive electrode side conductor plate 334 is connected to the positive electrode terminal 311.
- the second intermediate conductor plate 336 is connected to the AC terminal 313.
- the AC terminal 313 may be formed on the first intermediate conductor plate 335.
- the positive conductor plate 334, the first intermediate conductor plate 335, the second intermediate conductor plate 336, and the negative conductor plate 337 are made of copper or the like.
- FIG. 10 is a cross-sectional view seen from the direction of the arrow on the plane AA in FIG.
- the power semiconductor module 300 forms the first fin 343a on one surface 354 and the second fin 343b on the other surface 355 opposite to the one surface 354.
- the flow path forming body 400 includes a first refrigerant suppressing part 471 and a second refrigerant suppressing part 472 so as to sandwich the first fin 343a.
- the first refrigerant suppressing unit 471 and the second refrigerant suppressing unit 472 overlap with a region where the first fin 343a of the power semiconductor module 300 is not formed when viewed from the direction perpendicular to the one surface 354 of the power semiconductor module 300. Formed.
- the flow path forming body 400 is provided with a first flow path 443 formed along the first refrigerant suppressing section 471 and the second refrigerant suppressing section 472. Further, the flow path forming body 400 is provided with a folded flow path 445 formed on the side opposite to the opening 451 through the power semiconductor module 300. Further, the flow path forming body 400 is provided with a second flow path 444 formed along the power semiconductor module 300 on the side opposite to the flow direction of the first flow path 443.
- coolant suppression part 472 suppress the detour of the refrigerant
- the first flow path 443 and the second flow path 444 form the flow path 441 integrally with the flow path forming body 400 by being along the first refrigerant suppression section 471, the second refrigerant suppression section 472, and the power semiconductor module 300. It becomes possible.
- the flow path forming body 400 includes a third refrigerant suppression unit 473 and a fourth refrigerant suppression unit 474 so as to sandwich the second fin 343b.
- the third refrigerant suppressing part 473 and the fourth refrigerant suppressing part 474 overlap with a region where the first fin 343b of the power semiconductor module 300 is not formed when viewed from the direction perpendicular to the other surface 355 of the power semiconductor module 300. Formed.
- coolant suppression part 472 can suppress the refrigerant
- the same effect as 472 can be obtained.
- coolant suppression part 472 are made into the direction different from the insertion direction 370, the opening for a process different from the opening 451 is needed.
- the first refrigerant suppressing part 471 and the second refrigerant suppressing part 472 are formed along the insertion direction 370 in which the power semiconductor module 300 is inserted into the flow path 441 from the opening 451. This makes it possible to manufacture easily and leads to improvement in productivity.
- 11 is a cross-sectional view BB of the power semiconductor module 300 and the flow path forming body 400 in FIG.
- the circuit body 330 is housed in the case 341 in a state in which a semiconductor element and a conductor plate are sealed with a sealing resin 331 and insulated with an insulating sheet 333 functioning as an insulating member.
- the semiconductor elements constitute an upper arm side semiconductor element 323 and a lower arm side semiconductor element 324 of the inverter circuit.
- the upper arm side semiconductor element 323 is an IGBT 321U and a diode 322U.
- the lower arm side semiconductor element 324 is an IGBT 321L and a diode 322L.
- the semiconductor element is connected to the conductor plate through the solder 360 so as to sandwich the semiconductor element.
- the conductor plate includes a positive electrode side conductor plate 334, a first intermediate point conductor plate 335, a second intermediate point conductor plate 336, and a negative electrode side conductor plate 337.
- the IGBT 321U is connected to the signal line 314 through the bonding wire 363.
- the IGBT 322L is connected to the signal line 315 via the bonding wire 363.
- the case 341 includes a first heat dissipation base portion 344a, a second heat dissipation base portion 344b, and a frame body 342.
- the frame body 342 is connected to the first heat radiating base portion 344 a and the second heat radiating base portion 344 b via the connection portion 305.
- the fin includes a first fin 343a and a second fin 343b.
- the first fin 343 a is formed on one surface 354 of the power semiconductor module 300.
- the second fin 343b is formed on the other surface 355 opposite to the one surface 354 across the semiconductor element.
- the power semiconductor module 300 is housed in a flow path forming body 400 that forms a flow path 441.
- the flow path forming body 400 includes an opening 451 so as to be connected to the flow path 441.
- the opening 451 is sealed with a seal portion 350 and a seal member 351 provided in the case 341.
- the flow path forming body 400 includes an inlet portion 442 at a position facing the connection portion 305 provided at a position close to the seal portion 350.
- the inlet portion 442 is connected to the first flow path 443 in a direction away from the seal portion 350 along the power semiconductor module 300.
- the first channel 443 is connected to the folded channel 445 provided in the direction opposite to the opening 451.
- the folded flow path 445 is connected to a second flow path formed along the power semiconductor module 300 in the direction opposite to the flow direction of the first flow path.
- connection part 305 When the connection part 305 is compared with the structure of the case 341 without the connection part 305, the area where the fin is not formed becomes large. This is because forming the fins on the connecting portion 305 after the connecting step between the first heat radiating base portion 344a and the frame body 342 is disadvantageous in manufacturing cost.
- the flow path forming body 400 according to the present embodiment has a structure having the connection part 305, the first refrigerant suppressing part 471, the second refrigerant suppressing part 472, the third refrigerant suppressing part 473, and the first refrigerant suppressing part 473 shown in FIG.
- coolant suppression part 473 can be formed easily and productivity can be improved.
- the upper arm side semiconductor element 343 and the lower arm side semiconductor element 344 are arranged in a direction substantially perpendicular to the insertion direction 370 and are arranged in a direction crossing the flow direction of the refrigerant flowing through the first flow path 443. It is done.
- the upper arm side semiconductor element 343 and the lower arm side semiconductor element 344 do not overlap in the refrigerant flow direction, variation in the cooling state between the upper and lower arms can be suppressed, and the cooling performance can be improved.
- the first electrode surface 325 and the control electrode surface 326 are formed on one surface, and the second electrode surface 327 is formed on the other surface.
- the semiconductor element is disposed such that the second electrode surface 327 is closer to the first flow path 443 than the second flow path 444.
- the first electrode surface 325 and the second electrode surface 327 are connected to the conductor plate via the solder 360.
- the conductor plate is cooled by the refrigerant through the heat dissipation base portion 344, the first fin 343a, and the second fin 343b.
- the first electrode surface is, for example, an emitter electrode surface.
- the control electrode surface is, for example, a gate electrode surface.
- the second electrode surface is, for example, a collector electrode surface.
- the second electrode surface 327 has a larger area than the first electrode surface 325 having the control electrode surface 326, and has a large area contributing to heat dissipation.
- the first flow path 443 is in the vicinity of the inlet 442, and the flow velocity in the vicinity of the heat dissipation base is increased, so that the cooling performance can be improved.
- the power semiconductor module 300 is not limited to three for one flow path forming body 400, and may be, for example, one configuration or six configurations.
- the flow path 441 may branch the flow of the refrigerant to the plurality of power semiconductor modules 300. When the supply amount of the refrigerant can be sufficiently secured, the pressure loss can be reduced as compared with the case where the refrigerant is not branched. *
- DESCRIPTION OF SYMBOLS 200 ... Power converter, 300 ... Power semiconductor module, 300a ... 1st power semiconductor module, 300b ... 2nd power semiconductor module, 300c ... 3rd power semiconductor module, 305 ... Connection part, 311 ... Positive electrode terminal, 312 ... Negative electrode terminal 313 ... AC terminal, 314 ... signal terminal, 315 ... signal terminal, 316 ... intermediate DC negative electrode terminal, 321L ... IGBT, 321U ... IGBT, 322L ... diode, 322U ... diode, 323 ... upper arm side semiconductor element, 324 ... lower Arm side semiconductor element, 330 ... circuit body, 331 ... sealing resin, 333 ... insulating sheet, 334 ...
- positive electrode side conductor plate 335 ... first intermediate conductor plate, 336 ... second intermediate conductor plate, 337 ... negative electrode side conductor plate , 341 ... case, 342 ... frame, 343a ... first fin, 343b ... second fin 344a ... first heat radiating base, 344b ... second heat radiating base, 350 ... sealing part, 351 ... sealing member, 354 ... one surface, 355 ... other surface, 360 ... solder, 361 ... solder, 362 ... solder, 363 ... Bonding wire, 370 ... Insertion direction, 401 ... Channel introduction part, 402 ... Channel lead-out part, 440 ... Channel formation body, 411 ... First pipe, 412 ...
- Second pipe 441 ... Channel, 441a ... 1st flow path space, 441b ... 2nd flow path space, 441c ... 3rd flow path space, 442 ... Inlet part, 443 ... 1st flow path, 444 ... 2nd flow path, 445 ... Folding flow path, 446 ... 1st 1 connection part, 447 ... 2nd connection part, 448 ... 3rd connection part, 449 ... 4th connection part, 451 ... opening, 452 ... seal part, 471 ... 1st refrigerant
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- Physics & Mathematics (AREA)
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- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
特許文献(特開2011-114965号公報)に記載の技術では、フィンと枠体またはフィンと流路形成体の間に流路制御部材を装着し冷媒がフィンを迂回するのを抑制している。
しかしながら、流路制御部材の装着は自動化が難しく、生産性の課題があった。
前記パワー半導体モジュールが配置される流路及び当該流路と繋がる開口を形成する流路形成体と、を備え、
前記パワー半導体モジュールは、一方の面に第1フィンを形成し、前記半導体素子を挟んで前記一方面と対向する他方の面に第2フィンを形成し、
前記流路形成体は、前記第1フィンを間に挟むように配置された第1冷媒抑制部と第2冷媒抑制部を有し、
前記第1冷媒抑制部及び前記第2冷媒抑制部は、前記パワー半導体モジュールの前記一方の面の垂直方向から見たとき、前記パワー半導体モジュールの前記第1フィンが形成されていない領域と重なるように形成され、
前記第1冷媒抑制部及び前記第2冷媒抑制部に沿って形成される第1流路と、前記パワー半導体モジュールを介して前記開口とは反対側の形成される折り返し流路と、前記第1流路の流れ方向とは反対側であって前記パワー半導体モジュールに沿って形成される第2流路と、を設ける。
流路形成体400は、冷媒の入口である第1パイプ411と、冷媒の出口である第2パイプ412と、を備える。第1パイプ411ないし第2パイプ412は、流路形成体400に圧入される。なお、流路形成体400は、アルミや樹脂などで成形される。
図1は、図2における電力変換装置200の平面Xで切断した断面図Xである。図4は、図2における電力変換装置200の平面Yで切断した断面図Yである。
図5は、流路形成体400の入口部442を見えるようにした斜視図である。図6は、流路形成体400の出口部490を見えるようにした斜視図である。
第1フィン343aは、パワー半導体モジュール300の一方の面354に形成される。第2フィン343bは、パワー半導体モジュール300の一方の面355に形成される。
接続部305は、FSWやろう付けによって接合され、枠体342と第1放熱ベース部344a、枠体342と第2放熱ベース部344bをシールする。なおここでのシールは、Oリングや接着剤でもよい。
正極側導体板334は、正極端子311と接続される。第2中間導体板336は、交流端子313と接続される。交流端子313は、第1中間導体板335に形成されてもよい。
正極側導体板334および第1中間導体板335および第2中間導体板336および負極側導体板337は、銅などで形成される。
図9は、パワー半導体モジュール300と第1冷媒抑制部471及び第2冷媒抑制部472の配置関係を示す概要図である。図10は、図9の平面A-Aの矢印方向からみた断面図である。
流路形成体400は、第1冷媒抑制部471および前記第2冷媒抑制部472に沿って形成される第1流路443を設ける。また流路形成体400は、パワー半導体モジュール300を介して開口451とは反対側の形成される折り返し流路445を設ける。さらに流路形成体400は、第1流路443の流れ方向とは反対側であってパワー半導体モジュール300に沿って形成される第2流路444を設ける。
第1流路443と第2流路444は、第1冷媒抑制部471及び第2冷媒抑制部472とパワー半導体モジュール300に沿うことで、流路形成体400と一体で流路441を形成することが可能となる。
図10に示されるように、流路形成体400は、第2フィン343bを間に挟むように第3冷媒抑制部473および第4冷媒抑制部474を備える。第3冷媒抑制部473および第4冷媒抑制部474は、パワー半導体モジュール300の他方の面355の垂直方向から見たとき、パワー半導体モジュール300の第1フィン343bが形成されていない領域と重なるように形成される。
第3冷媒抑制部471および第4冷媒抑制部472は、第2フィン343aの形成されていない他方面345に流れる冷媒を抑制することができ、第1冷媒抑制部471および前記第2冷媒抑制部472と同様の効果を得ることができる。
第1冷媒抑制部471と第2冷媒抑制部472が挿入方向370とは別の方向にした場合、開口451とは別の加工するための開口が必要となる。本実施形態においては、第1冷媒抑制部471と第2冷媒抑制部472は、パワー半導体モジュール300を開口451から流路441に挿入する挿入方向370に沿って形成される。これにより、容易に製造が可能となり生産性の向上に繋がる。
図11は、図9におけるパワー半導体モジュール300と流路形成体400の断面図B-Bである。
ケース341は、第1放熱ベース部344aと、第2放熱ベース部344bと、枠体342とにより構成される。枠体342は、第1放熱ベース部344a、第2放熱ベース部344bと接続部305を介して接続される。 フィンは、第1フィン343aと第2フィン343bで構成される。第1フィン343aは、パワー半導体モジュール300の一方の面354に形成される。第2フィン343bは、半導体素子を挟んで一方の面354の対向する他方の面355に形成される。
流路形成体400は、シール部350に近い位置に設けられた接続部305と対向する位置に入口部442を備える。入口部442は、パワー半導体モジュール300に沿ってシール部350と遠ざかる方向に第1流路443と繋がる。
また、上アーム側半導体素子343および下アーム側半導体素子344は、図8に示すように挿入方向370と略垂直方向に配置され、第1流路443を流れる冷媒の流れ方向を横切る方向に並べられる。
これにより、上アーム側半導体素子343および下アーム側半導体素子344は、冷媒流れ方向に対して重なることがないため、上下アーム間の冷却状態のばらつきを抑制でき、冷却性能の向上ができる。
また、半導体素子は、一方の面に第1電極面325及び制御電極面326を形成し、他方の面に第2電極面327を形成する。半導体素子は、第2電極面327が第2流路444よりも第1流路443に近くなるように配置される。第1電極面325および第2電極面327は、はんだ360を介して導体板に接続される。導体板は、放熱ベース部344および第1フィン343a、第2フィン343bを介して冷媒により冷却される。第1電極面は、たとえばエミッタ電極面である。制御電極面は、たとえばゲート電極面である。第2電極面は、たとえばコレクタ電極面である。
これにより、第2電極面327は、制御電極面326をもつ第1電極面325も面積が大きく、放熱に寄与する面積が大きい。第1流路443は、入口部442付近にあり放熱ベース近傍の流速が大きくなるため、冷却性能を向上できる。
Claims (5)
- 半導体素子を有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が配置される流路及び当該流路と繋がる開口を形成する流路形成体と、を備え、
前記パワー半導体モジュールは、一方の面に第1フィンを形成し、前記半導体素子を挟んで前記一方面と対向する他方の面に第2フィンを形成し、
前記流路形成体は、前記第1フィンを間に挟むように配置された第1冷媒抑制部と第2冷媒抑制部を有し、
前記第1冷媒抑制部及び前記第2冷媒抑制部は、前記パワー半導体モジュールの前記一方の面の垂直方向から見たとき、前記パワー半導体モジュールの前記第1フィンが形成されていない領域と重なるように形成され、
前記第1冷媒抑制部及び前記第2冷媒抑制部に沿って形成される第1流路と、前記パワー半導体モジュールを介して前記開口とは反対側の形成される折り返し流路と、前記第1流路の流れ方向とは反対側であって前記パワー半導体モジュールに沿って形成される第2流路と、を設ける電力変換装置。 - 請求項1に記載の電力変換装置であって、
前記第1冷媒抑制部と第2冷媒抑制部は、前記パワー半導体モジュールを前記開口から前記流路に挿入する挿入方向に沿って形成される電力変換装置。 - 請求項1又は2に記載の電力変換装置であって、
前記パワー半導体モジュールは、前記半導体素子を有する回路体と、前記回路体を収納するケースと、を有し、
前記ケースは、フィンを有する放熱ベース部と、当該放熱ベース部と接続部を介して接続される枠体と、前記流路形成体の開口を塞ぐシール部と、を有し、
前記流路形成体は、前記シール部に近い位置に設けられた前記接続部と対向しておりかつ前記第1流路と繋がる入口部を設ける電力変換装置。 - 請求項1ないし3に記載のいずれかの電力変換装置であって、
前記パワー半導体モジュールの前記半導体素子は、インバータ回路の上アームを構成する複数の上アーム側半導体素子と、前記インバータ回路の下アームを構成する複数の下アーム側半導体素子と、を有し、
前記複数の上アーム側半導体素子及び前記複数の下アーム側半導体素子は、前記第1流路を流れる冷媒の流れ方向を横切る方向に並べられる電力変換装置。 - 請求項4に記載の電力変換装置であって、
前記半導体素子は、一方の面に第1電極面及び制御電極面を形成し、他方の面に第2電極面を形成し、
さらに前記半導体素子は、前記第2電極面が前記第2流路よりも前記第1流路に近くなるように配置される電力変換装置。
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| DE112015004284.9T DE112015004284T5 (de) | 2014-11-13 | 2015-10-07 | Leistungsumsetzer |
| CN201580056726.XA CN107078659A (zh) | 2014-11-13 | 2015-10-07 | 电力转换装置 |
| US15/518,303 US10279653B2 (en) | 2014-11-13 | 2015-10-07 | Power converter |
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| ES2773479T3 (es) * | 2016-05-24 | 2020-07-13 | Mitsubishi Electric Corp | Sistema que comprende al menos un módulo de potencia que comprende al menos un chip de potencia que se refrigera con una barra colectora refrigerada por líquido |
| 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 |
| CN106686947B (zh) * | 2016-12-30 | 2018-11-09 | 华为机器有限公司 | 散热器及通信产品 |
| FR3066355B1 (fr) * | 2017-05-11 | 2020-02-07 | Mersen France Sb Sas | Module de refroidissement et convertisseur de puissance comprenant un tel module de refroidissement |
| US20190357386A1 (en) * | 2018-05-16 | 2019-11-21 | GM Global Technology Operations LLC | Vascular polymeric assembly |
| JP7081361B2 (ja) * | 2018-07-17 | 2022-06-07 | 富士通株式会社 | 液浸槽 |
| US11540424B2 (en) * | 2018-09-14 | 2022-12-27 | Mitsubishi Electric Corporation | Electric power converter |
| DE102018132143B4 (de) | 2018-12-13 | 2023-10-12 | Infineon Technologies Ag | Leiterplatte, Chip-Kühlgehäuse, Baugruppe und Verfahren zum Kühlen eines Halbleiterchips |
| JP7133762B2 (ja) * | 2019-06-07 | 2022-09-09 | 株式会社デンソー | 電力変換装置とその製造方法 |
| US11224147B1 (en) * | 2020-11-19 | 2022-01-11 | GM Global Technology Operations LLC | Direct cooling of inverter switches |
| DE102022116921A1 (de) * | 2022-07-07 | 2024-01-18 | Eberspächer Catem Gmbh & Co. Kg | Bauteil einer elektrischen Heizvorrichtung und elektrische Heizvorrichtung |
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| EP2216891B1 (en) * | 2003-08-21 | 2012-01-04 | Denso Corporation | Mounting structure ofa semiconductor device |
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| US7965508B2 (en) * | 2007-03-27 | 2011-06-21 | Denso Corporation | Cooling device for electronic component and power converter equipped with the same |
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| US10279653B2 (en) | 2019-05-07 |
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