WO2013094028A1 - 半導体モジュール - Google Patents
半導体モジュール Download PDFInfo
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- WO2013094028A1 WO2013094028A1 PCT/JP2011/079559 JP2011079559W WO2013094028A1 WO 2013094028 A1 WO2013094028 A1 WO 2013094028A1 JP 2011079559 W JP2011079559 W JP 2011079559W WO 2013094028 A1 WO2013094028 A1 WO 2013094028A1
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- semiconductor
- package
- device package
- semiconductor module
- capacitor
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 159
- 238000001816 cooling Methods 0.000 claims abstract description 123
- 239000003990 capacitor Substances 0.000 claims description 57
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- 239000003507 refrigerant Substances 0.000 claims description 16
- 238000004382 potting Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 4
- 239000002826 coolant Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 13
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- 230000009467 reduction Effects 0.000 description 1
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- H—ELECTRICITY
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
- H01L23/3675—Cooling facilitated by shape of device characterised by the shape of the housing
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4093—Snap-on arrangements, e.g. clips
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/50—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor for integrated circuit devices, e.g. power bus, number of leads
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- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/10—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
- H01L25/11—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L29/00
- H01L25/117—Stacked arrangements of devices
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- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0611—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region
- H01L27/0617—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region comprising components of the field-effect type
- H01L27/0629—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region comprising components of the field-effect type in combination with diodes, or resistors, or capacitors
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
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- H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/32245—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/33—Structure, shape, material or disposition of the layer connectors after the connecting process of a plurality of layer connectors
- H01L2224/331—Disposition
- H01L2224/3318—Disposition being disposed on at least two different sides of the body, e.g. dual array
- H01L2224/33181—On opposite sides of the body
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- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/33—Structure, shape, material or disposition of the layer connectors after the connecting process of a plurality of layer connectors
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- H01L2924/13—Discrete devices, e.g. 3 terminal devices
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- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
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- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
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- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/191—Disposition
- H01L2924/19101—Disposition of discrete passive components
- H01L2924/19105—Disposition of discrete passive components in a side-by-side arrangement on a common die mounting substrate
Definitions
- the present invention relates to a semiconductor module in which a plurality of flat semiconductor packages containing semiconductor elements and a cooler are integrated.
- IGBTs and freewheeling diodes used in inverters and voltage converters generate a large amount of heat. These elements are sometimes called power semiconductor elements or simply power elements. The amount of heat generation depends on the magnitude of the flowing current. Therefore, an inverter or voltage converter that supplies electric power to a wheel driving motor (a driving motor for an electric vehicle including a hybrid vehicle) that requires a large output uses a large number of power elements that generate a large amount of heat. Inverters and voltage converters use electronic components that generate a large amount of heat in addition to power elements.
- a typical example of such an electronic component is a capacitor (smoothing capacitor) for smoothing a current flowing between the source / drain (between the emitter / collector) of the power element.
- Patent Document 1 discloses a semiconductor module in which a flat cooling tube (cooling plate), a flat semiconductor package, and a flat smoothing capacitor are stacked.
- a semiconductor package is sandwiched between one layer sandwiched between adjacent cooling plates, and a flat smoothing capacitor is sandwiched between other layers.
- the flattening rate of the smoothing capacitor is not large, and the thickness of the smoothing capacitor is thicker than that of the semiconductor package. Therefore, the intervals between the stacked cooling plates are not equal.
- Patent Document 2 discloses a semiconductor module in which a capacitor and a semiconductor element are housed in a single package by molding, and a plurality of packages and a plurality of cooling plates are alternately stacked.
- Patent Document 3 discloses a semiconductor module in which a plurality of electronic components formed in a plate shape and a plurality of cooling plates are alternately stacked.
- a package containing a semiconductor element or a device in which a plate-shaped electronic component and a cooling plate are stacked can cool the package or the electronic component from both sides, and thus has excellent compactness.
- This specification relates to a semiconductor module in which a plurality of semiconductor packages and other electronic components and a cooling plate are alternately stacked.
- the present specification provides a technique for improving such a cooler-integrated semiconductor module.
- a semiconductor module includes a plurality of flat plate cooling plates, a plurality of flat plate semiconductor packages containing semiconductor elements, a flat device package, and a cooling pipe.
- the device package contains electronic components of a different type from the semiconductor elements housed in the semiconductor package.
- the device package may be molded with a resin.
- Cooling plates and semiconductor packages or device packages are alternately stacked. In other words, the semiconductor package and the device package are sandwiched between adjacent cooling plates.
- the widths of the semiconductor package and the device package are substantially equal, and therefore a plurality of cooling plates are arranged at substantially equal intervals.
- the cooling pipe connects two adjacent cooling plates. The refrigerant flows through the inside of the cooling pipe from one cooling to the other cooling plate.
- the device package is obtained by molding an electronic component with resin, and can be formed with high accuracy in the thickness direction. Therefore, it is convenient to stack the semiconductor package together with the cooling plate. Moreover, the resin mold is excellent in moisture resistance and voltage resistance. In particular, since it is excellent in voltage resistance, it is convenient to arrange it near the semiconductor package. Semiconductor elements and electronic components through which a large current flows are connected by a conductive member called a bus bar.
- the bus bar is a long metal plate member having a high withstand voltage. A device package having excellent voltage resistance is also convenient to be placed close to such a bus bar.
- the laminated body of the cooling plate, the semiconductor package, and the device package is loaded from both sides in the stacking direction, and the adhesion between the cooling plate and the semiconductor package (or device package) is improved.
- the thickness of the semiconductor package is substantially equal to the thickness of the device package, and the cooling plate may have a structure in which the thickness changes with respect to the load in the stacking direction.
- the side wall of the cooling plate or a part of the cooling pipe is configured with an accordion structure or a bellows structure, and the thickness of the accordion structure or the bellows structure depends on the load. It shrinks.
- the semiconductor module is loaded from both sides in the stacking direction.
- the thickness of the cooling plate is uniformly reduced according to the load, and the cooling plate can be prevented from being damaged.
- the electronic component housed in the device package is typically a capacitor.
- the capacitor may be a flat wound capacitor or a multilayer capacitor.
- a flat wound capacitor is less expensive than a multilayer capacitor.
- a multilayer capacitor can be easily made thinner than a wound capacitor.
- the resin mold of the device package is preferably formed by potting or spraying. Unlike transfer molding often used for semiconductor elements, potting or spraying is suitable for molding electronic components that do not require high-temperature and high-pressure electronic components and do not have high heat resistance.
- the semiconductor package and the device package may be arranged adjacent to one layer between the two cooling plates, or may be arranged in different layers.
- the length of the semiconductor modules in the stacking direction can be shortened.
- the width of the semiconductor module can be reduced.
- at least one semiconductor package and at least one device package may be arranged so as to overlap each other when viewed from the stacking direction.
- at least one semiconductor package and at least one device package may be arranged side by side between two adjacent cooling plates.
- at least one semiconductor package and at least one device package may be arranged side by side in a direction crossing the stacking direction.
- the semiconductor elements in the semiconductor package and the electronic components in the device package are electrically connected by a straight bus bar.
- the semiconductor elements in the semiconductor package and the electronic components in the device package are preferably connected by the shortest distance by the bus bar.
- FIG. 3 shows a cross-sectional view of a cooling plate of one embodiment.
- FIG. 1 is a perspective view of the semiconductor module 100.
- the semiconductor module 100 is a module incorporated in a motor controller unit of an electric vehicle, and is a collection of transistors and diodes that constitute a switching element of an inverter, and a smoothing capacitor.
- the semiconductor module 100 is mainly composed of a plurality of flat plate cooling plates 12, a plurality of flat plate semiconductor packages 5, and a plurality of device packages 2 incorporating capacitors 3.
- the coolant flows inside the cooling plate 12, and the coolant takes heat from the semiconductor package 5 and the device package 2, and the packages are cooled.
- the plurality of cooling plates 12 are arranged in parallel, and the semiconductor package 5 or the device package 2 is sandwiched between two adjacent cooling plates 12.
- the semiconductor module 100 forms a stacked body in which the cooling plates 12 arranged in parallel and the semiconductor packages 5 or the device packages 2 are alternately stacked.
- the entire laminate is clamped with brackets 16.
- a spring 17 is incorporated between the end of the laminated body and the rib 16a of the bracket 16, and the spring 17 applies pressure in the laminating direction to the laminated body. Due to the pressure of the spring 17, the cooling plate 12 and the semiconductor package 5 or the device package 2 are in close contact with each other. Due to the close contact, the heat transfer efficiency between the cooling plate 12 and the semiconductor package 5 or the device package 2 is improved.
- Adjacent cooling plates 12 are connected to each other by two connecting pipes 13a and 13b.
- a supply pipe 15 that supplies a refrigerant and a discharge pipe 14 that discharges the refrigerant are connected to the cooling plate 12 positioned at the end of the laminate.
- the refrigerant supplied from the supply pipe 15 flows to the downstream cooling plate 12 through the connection pipe 13a.
- the refrigerant that has passed through the inside of the cooling plate 12 flows to the discharge pipe 14 through the connection pipe 13b.
- the connection pipes 13a and 13b correspond to an example of a cooling pipe.
- the semiconductor module 100 alternately sandwiches semiconductor packages 5 containing semiconductor elements and device packages 2 containing capacitors 3.
- the semiconductor package 5 and the device package 2 have substantially the same thickness d1.
- the plurality of cooling plates 12 are arranged at substantially equal intervals of the width d2.
- the width d2 between adjacent cooling plates 12 is slightly wider than the package thickness d1.
- ceramic insulating plates 8 are attached to both sides of the semiconductor package 5.
- An insulating plate 8 is inserted into a slight gap between the width d2 between the adjacent cooling plates 12 and the thickness d1 of the package, and is filled with grease.
- the semiconductor package 5 will be described.
- the semiconductor package 5 is formed by molding two transistors 6a and 6b and two diodes 7a and 7b with resin inside. Although not shown, the transistor 6a and the diode 7a are connected in antiparallel inside the resin mold, and the transistor 6b and the diode 7b are also connected in antiparallel. A set of the transistor 6a and the diode 7a and a set of the transistor 6b and the diode 7b are connected in series. As is well known, an anti-parallel circuit of a transistor and a diode is used as a switching circuit for an inverter or a voltage converter.
- One semiconductor package 5 corresponds to a series connection of two switching circuits.
- three electrodes 5a, 5b, and 5c extend from one side surface (bottom surface in FIG. 1) of the semiconductor package 5, and from the other side surface (top surface in FIG. 1).
- the plurality of control terminals 5d extend.
- the electrode 5a is connected to the positive electrode of the two switching circuits connected in series
- the electrode 5b is connected to the negative electrode (ground) of the two switching circuits connected in series.
- the electrode 5c is connected to the midpoint of two switching circuits connected in series.
- the control terminal 5d is connected to the gate electrode of the transistor.
- the device package 2 is obtained by solidifying the capacitor 3 with a resin mold. Both electrodes 2 a and 2 b of the capacitor 3 extend from one side surface (bottom surface in FIG. 1) of the device package 2.
- FIG. 2 shows a partial cross section of the semiconductor module 100.
- FIG. 2 shows a cross section of the three cooling plates 12 and the semiconductor package 5 and the device package 2 sandwiched between them. 2 is an enlarged view of the side end of the cooling plate.
- the cooling plate 12 includes two frame plates 27 constituting a housing, a partition plate 26 that divides an internal space into two, and a corrugated plate 25 corresponding to a cooling fin.
- the semiconductor package 5 is obtained by molding a transistor 22 (semiconductor element) and a diode (not shown) with resin.
- a heat sink 21 is provided on both sides of the semiconductor package 5.
- the heat sink 21 efficiently diffuses the heat of the transistor 22 and the diode to the surface of the package.
- An insulating plate 24 is inserted between the semiconductor package 5 and the cooling plate 12, and grease 23 is filled on both sides of the insulating plate 24. The heat of the heat sink 21 moves to the cooling plate 12 through the grease 23 and the insulating plate 24.
- Device package 2 is obtained by molding capacitor 3 with resin.
- Grease 23 is filled between the device package 2 and the cooling plate 12. The heat of the capacitor 3 moves to the cooling plate 12 through a resin mold and grease 23.
- the one electrode 2a of the capacitor 3 extending from the device package 2 and the electrode 5a extending from the semiconductor package 5 are connected by a linear bus bar 29a.
- the other electrode 2b of the capacitor 3 extending from the device package 2 and the electrode 5b extending from the semiconductor package 5 are connected by a linear bus bar 29b.
- FIG. 3 is a circuit block diagram of a device to which the semiconductor module 100 is applied.
- FIG. 3 is a circuit diagram of the motor control unit of the hybrid vehicle 80 including the engine 87 and the two motors 85 and 86.
- the semiconductor module 100 includes a switching circuit of a first inverter 83 that supplies AC power to the first motor 85, a switching circuit of a second inverter 84 that supplies AC power to the second motor 86, and those switching circuits. This is an integrated capacitor.
- the semiconductor module 100 also includes a switching circuit of a boost converter 82 that converts the output voltage of the battery 81 into a high voltage suitable for motor driving.
- a set of two switching circuits is referred to as a “power module”.
- the battery 81 is connected to the boost converter 82.
- Boost converter 82 includes a series connection of two switching circuits and a reactor L. A series connection of two switching circuits corresponds to the power module PM7.
- the output terminal of the boost converter 82 is connected to the first inverter 83 and the second inverter 84.
- a three-phase output inverter has three sets of two switching circuits connected in series (ie, a power module).
- the first inverter 83 includes power modules PM1, PM2, and PM3. Capacitors (C1, C2, C3) are connected in parallel to each power module.
- the second inverter 84 includes power modules PM4, PM5, and PM6. Capacitors (C4, C5, C6) are connected in parallel to each power module. Capacitor C smoothes the current flowing through power module PM.
- the drive mechanism of the hybrid vehicle 80 will be described.
- the output shaft of the engine 87, the output shaft of the first motor 85, and the output shaft of the second motor 86 are engaged with each other by a power distribution mechanism 88.
- the power distribution mechanism 88 is a planetary gear.
- the output shaft of the engine 87 is connected to the planetary carrier, the output shaft of the first motor 85 is connected to the sun gear, and the output shaft of the second motor 86 is connected to the ring gear.
- the ring gear is also connected to the axle 89.
- the axle 89 is connected to the wheels via a differential 90.
- the hybrid vehicle 80 obtains wheel driving force by appropriately adjusting the outputs of the engine 87 and the two motors 85 and 86.
- the first motor 85 also functions as a starter that starts the engine 87.
- the power distribution mechanism 88 distributes a part of the driving torque of the engine 87 to the first motor 85
- the first motor 85 can generate power and charge the battery 81.
- the hybrid vehicle 80 can also generate electric power with the first and second motors 85 and 86 using the kinetic energy of the vehicle.
- the semiconductor module 100 is obtained by integrating seven power modules PM1-PM7 and six capacitors C1-C6.
- One power module PM corresponds to one semiconductor package 5.
- One capacitor C corresponds to one device package 2.
- FIGS. FIG. 4 shows a semiconductor module 100a in which the device package 2 in which the capacitor is embedded and the semiconductor package 5 are alternately stacked.
- the semiconductor module 100 a accommodates one semiconductor package 5 or device package 2 in one layer between adjacent cooling plates 12. Therefore, the semiconductor module 100a has a longer length in the stacking direction but a smaller width in the horizontal direction.
- the semiconductor package 5 and the device package 2 that are adjacent in the stacking direction are electrically coupled by the bus bars 29a and 29b.
- FIG. 5 shows a semiconductor module 100 b in which one semiconductor package 5 and one device package 2 are accommodated in one layer between adjacent cooling plates 12.
- One semiconductor package 5 and one device package 2 are arranged side by side in the horizontal direction.
- the semiconductor module 100b has a larger width in the lateral direction but a shorter length in the stacking direction.
- the semiconductor package 5 and the device package 2 that are adjacent in the horizontal direction are electrically coupled by the bus bars 29a and 29b.
- FIG. 6 and FIG. 7 show wiring variations of the semiconductor package 5 and the device package 2 arranged in one layer. 6 and 7 show a state where the mold is opened.
- the electrodes 2 a and 2 b of the device package 2 and the electrodes 5 a, 5 b and 5 c of the semiconductor package 5 extend in parallel to the side of the cooling plate 12.
- the electrode 2a and the electrode 5a are connected by a linear bus bar 29a, and the electrode 2b and the electrode 5b are connected by a linear bus bar 29b.
- the capacitor 3 and the transistors 6a and 6b are connected by linear bus bars 302a and 302b.
- the bus bars 302a and 302b connect capacitors and transistors without using the electrodes 2 and 5 like the bus bars 29a and 29b in FIG. 6, and are shorter than the bus bars 29a and 29b.
- a device package that contains a flat wound capacitor As shown in FIG. 8, a film 51 is wound around a flat plate core 52 and flattened by applying pressure from both sides using a pair of press plates 53. Then, as shown in FIG. 9, a flat wound capacitor 55 is obtained. Next, the electrodes 2a and 2b are attached to the flat wound capacitor 55 and placed in the mold 56 (FIG. 10). Next, the resin 57 is poured into the mold 56 (FIG. 11). This method is an example of a manufacturing method called potting. After the resin is solidified, the mold 56 is removed, and the device package 2 in which the flat wound capacitor 55 is molded is obtained (FIG. 12).
- the device package 2 is manufactured by resin potting. Potting is suitable for molding a capacitor that does not have high heat resistance because the resin does not need to be heated to high temperature and pressure. It is also preferable to manufacture the device package 2 by resin spraying instead of potting.
- a method for manufacturing a multilayer capacitor is introduced.
- One method is a method of laminating the film 151 (FIG. 13).
- a multilayer capacitor 155 is obtained by laminating a large number of films 151 (FIG. 14).
- Another method is to prepare a large polygonal bobbin 252 and wind the film 251 around the bobbin 252.
- the multilayer capacitor 255 is obtained.
- the aspect ratio of the capacitor is preferably 10 or more.
- the aspect ratio is the ratio of the long side to the short side. 14 is used, the aspect ratio corresponds to width W / thickness T or depth L / thickness T.
- FIG. 16 shows a cross-sectional view of the semiconductor module 100e.
- the cooler of the semiconductor module 100e is composed of cooling plates 12a to 12g.
- the cooling plates 12a to 12g are collectively referred to as “cooling plate 12”.
- cooling plate 12 In FIG. 16, only the upper two cooling plates 12a and 12b are provided with reference numerals for individual parts, but the reference numerals for the individual parts are omitted in the other cooling plates.
- FIG. 17 shows an exploded perspective view of a single cooling plate.
- FIG. 17 is an exploded perspective view of the outermost cooling plate 12a to which the supply pipe 15 and the discharge pipe 147 are connected. However, all the cooling plates have the same structure except for the presence or absence of the filter 129.
- the casing of the outermost cooling plate 12a is composed of two opposing outer plates 121 and 125.
- the outer plates 121 and 125 have a shallow container shape with a flange. By connecting the flanges facing each other with the intermediate plate 123 in between, the refrigerant flow paths 131 and 132 (see also FIG. 16). ) Is formed.
- the flanges of the outer plates are joined by brazing.
- Two openings 121a and 121b are formed in one outer plate 121.
- the opening protrudes from the surface of the outer plate.
- such an opening may be referred to as a protruding opening.
- the other outer plate 125 is also formed with projecting openings 125a and 125b on both sides in the longitudinal direction (X direction in the figure).
- the middle plate 123 also has openings 123a and 123b at positions facing the openings of the outer plate.
- the openings 121a, 123a, and 125a are provided so as to overlap each other when viewed from the stacking direction of the cooling plates (Y direction in the figure), and these openings constitute a through hole that penetrates the cooling plate 12a.
- the openings 121b, 123b, and 125b also constitute through holes.
- the two through holes of the outermost cooling plate 12a are provided on both sides of the region 118 where the semiconductor package abuts.
- the intermediate plate 123 separates the internal space of the cooling plate 12a into two.
- the lower side in FIG. 17 corresponds to the upstream side of the refrigerant.
- the middle plate 123 divides the flow path inside the cooling plate 12 a into an upstream flow path 131 and a downstream flow path 132.
- a filter 129 for removing foreign matter is attached to the opening 123 a on the upstream side of the intermediate plate 123. Foreign matter contained in the refrigerant flowing in from the refrigerant supply pipe 15 does not flow to the cooling plate downstream of the outermost cooling plate 12a by the filter 129, but passes through the upstream flow path 131 of the outermost cooling plate 12a. , Discharged to the discharge pipe 14.
- Radiation fins 124 (coarse pitch radiation fins 124) extending along the flow direction of the flow path are disposed in the upstream flow path 131, and the downstream flow path 132 extends along the flow direction of the flow path.
- Radiation fins 122 (thin pitch radiation fins 122) are arranged.
- the radiating fins 124 and 122 are provided to facilitate the transfer of the heat of the outer plates 121 and 125 to the refrigerant, and increase the cooling capacity of the cooling plate 12a.
- the pitch of the coarse pitch radiating fins 124 on the upstream side is coarser than that of the fine pitch radiating fins 122 on the downstream side.
- the radiating fins 122 and 124 are corrugated plates, and each of the waves corresponds to a “fin”.
- the “fin pitch” means the corrugated pitch.
- the coarse pitch radiating fins 124 having a coarse pitch are arranged in the upstream flow path 131 so that the foreign substances easily flow, and the foreign substance does not flow in the downstream flow path 132 by the filter 129, so that the cooling efficiency is improved.
- Narrow pitch radiating fins 122 are arranged.
- the projecting opening 121a (121b) of one cooling plate and the projecting opening 125a (125b) of the other cooling plate facing each other are fitted to form a connecting pipe 113.
- the protruding opening 121a (121b) and the protruding opening 125a (125b) are also joined by brazing or the like.
- the cooling plate has the same structure. However, the filter 129 is provided only in the through hole close to the supply pipe 15 of the intermediate plate 123 on the upstream side cooling plate 12a. Although not shown in FIG. 16, coarse pitch heat dissipating fins 124 (see FIG. 17) are arranged in the upstream flow path 131 of the outermost cooling plate 12a. Are arranged with fine pitch heat dissipating fins 122.
- the arrows in the flow path shown in FIG. 16 indicate the refrigerant flow.
- the refrigerant supplied from the supply pipe 15 to the cooler flows in parallel through the cooling plates and exits from the discharge pipe 14.
- the foreign matter mixed in the refrigerant does not flow into the downstream flow path 132 and other cooling plates by the filter 129, but flows to the discharge pipe 14 through the upstream flow path 131 of the outermost cooling plate 12a.
- not the fine pitch heat radiation fins 122 but the coarse pitch heat radiation fins 124 are arranged in the upstream flow path 131, so that foreign matters flow smoothly through a wide gap between the fins.
- the semiconductor package and the device package (not shown) are arranged in a space 134a between the outermost cooling plate 12a and the adjacent cooling plate 12b. Similarly, semiconductor packages or device packages are arranged in spaces 134b to 134f between adjacent cooling plates. As described above, the stacked body of the plurality of cooling plates 12 and the plurality of semiconductor packages (or device packages) receives a compressive load in the stacking direction and adheres to each other. The heat of the semiconductor package is absorbed by the refrigerant through the outer plates 121 and 125 of the cooling plate 12 and the fine pitch radiating fins 122, and the semiconductor package is cooled.
- the semiconductor package is not arranged on the upstream side of the outermost cooling plate 2a. Therefore, even if the coarse pitch heat dissipating fins 124 (see FIG. 17) are arranged in the upstream flow path 131 of the outermost cooling plate 12a and the cooling performance is lowered as compared with other cooling plates, the semiconductor module 100e as a whole has a cooling capacity. There is no effect.
- FIG. 18 is a cross-sectional view of two cooling plates 212 connected to each other.
- the cooling plate 212 has openings 221a (221b) and 225a (225b) that are connected to each other and form the connecting pipe 213.
- the base of the opening 221a (221b) constitutes the bellows 230.
- the base of the opening 225a (225b) also constitutes the bellows 230. That is, the bellows 230 is provided at the base of the connection pipe 213.
- the bellows 230 is reduced, and the distance d2 between adjacent plates is reduced. That is, the cooling plate 212 has a structure in which the inter-plate distance d2 changes with respect to the load in the stacking direction.
- the intermediate plate 123 shown in FIGS. 16 and 17 is not shown.
- the widths of the semiconductor package and the device package are substantially equal, and therefore a plurality of cooling plates are arranged at substantially equal intervals.
- the cooling pipe connects two adjacent cooling plates.
- a semiconductor and another electronic component can be pinched
- the semiconductor package of the embodiment may include an insulating plate provided between the semiconductor element and the cooling plate.
- the device package may include an insulating plate provided between the electronic component and the cooling plate.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims (10)
- 複数の平板型の冷却プレートと、
半導体素子を収めた複数の平板型の半導体パッケージと、
前記半導体パッケージに収められた半導体素子とは異なる種類の電子部品を収めている平板型のデバイスパッケージと、
隣接する冷却プレートの間にわたって設けられ、内部を冷媒が通る冷却管と、
を備えており、
複数の冷却プレートは略等間隔に配置されており、隣接する冷却プレートの間に半導体パッケージとデバイスパッケージが挟持されており、
平板型の冷却プレートと、半導体パッケージまたはデバイスパッケージが交互に積層されている、
ことを特徴とする半導体モジュール。 - 半導体パッケージの厚みとデバイスパッケージの厚みが略等しいことを特徴とする請求項1に記載の半導体モジュール。
- デバイスパッケージは樹脂でモールドされていることを特徴とする請求項1又は2に記載の半導体モジュール。
- デバイスパッケージに収められている電子部品はコンデンサであることを特徴とする請求項1から3のいずれか1項に記載の半導体モジュール。
- 前記コンデンサは、扁平な捲回式コンデンサであることを特徴とする請求項4に記載の半導体モジュール。
- 前記コンデンサは、積層式のコンデンサであることを特徴とする請求項4に記載の半導体モジュール。
- デバイスパッケージの樹脂モールドは、ポッティング又は吹き付けにより成形されていることを特徴とする請求項1から6のいずれか1項に記載の半導体モジュール。
- 少なくとも一つの半導体パッケージと少なくとも一つのデバイスパッケージは、積層方向から見て重なるように配置されていることを特徴とする請求項1から7のいずれか1項に記載の半導体モジュール。
- 少なくとも一つの半導体パッケージと少なくとも一つのデバイスパッケージが、隣接する2個の冷却プレートの間で横方向に並んで配置されていることを特徴とする請求項1から8のいずれか1項に記載の半導体モジュール。
- 半導体パッケージ内の半導体素子とデバイスパッケージ内の電子部品が、直線状のバスバによって電気的に接続されていることを特徴とする請求項1から9のいずれか1項に記載の半導体モジュール。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/079559 WO2013094028A1 (ja) | 2011-12-20 | 2011-12-20 | 半導体モジュール |
KR1020147016831A KR20140098805A (ko) | 2011-12-20 | 2011-12-20 | 반도체 모듈 |
EP11878097.2A EP2797112A4 (en) | 2011-12-20 | 2011-12-20 | SEMICONDUCTOR MODULE |
RU2014125069A RU2014125069A (ru) | 2011-12-20 | 2011-12-20 | Полупроводниковый модуль |
US14/366,730 US20140339693A1 (en) | 2011-12-20 | 2011-12-20 | Semiconductor module |
CN201180075794.2A CN103999213A (zh) | 2011-12-20 | 2011-12-20 | 半导体模块 |
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PCT/JP2011/079559 WO2013094028A1 (ja) | 2011-12-20 | 2011-12-20 | 半導体モジュール |
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WO2013094028A1 true WO2013094028A1 (ja) | 2013-06-27 |
Family
ID=48667954
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PCT/JP2011/079559 WO2013094028A1 (ja) | 2011-12-20 | 2011-12-20 | 半導体モジュール |
Country Status (6)
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US (1) | US20140339693A1 (ja) |
EP (1) | EP2797112A4 (ja) |
KR (1) | KR20140098805A (ja) |
CN (1) | CN103999213A (ja) |
RU (1) | RU2014125069A (ja) |
WO (1) | WO2013094028A1 (ja) |
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CN103999213A (zh) | 2014-08-20 |
KR20140098805A (ko) | 2014-08-08 |
EP2797112A1 (en) | 2014-10-29 |
EP2797112A4 (en) | 2015-09-30 |
US20140339693A1 (en) | 2014-11-20 |
RU2014125069A (ru) | 2016-02-10 |
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