WO2014147720A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
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- WO2014147720A1 WO2014147720A1 PCT/JP2013/057709 JP2013057709W WO2014147720A1 WO 2014147720 A1 WO2014147720 A1 WO 2014147720A1 JP 2013057709 W JP2013057709 W JP 2013057709W WO 2014147720 A1 WO2014147720 A1 WO 2014147720A1
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- switch element
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- control switch
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- horizontal
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/18—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 subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L25/04—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 not having separate containers
- H01L25/07—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 not having separate containers the devices being of a type provided for in group H01L29/00
- H01L25/072—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 not having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
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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
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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
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73201—Location after the connecting process on the same surface
- H01L2224/73203—Bump and layer connectors
- H01L2224/73204—Bump and layer connectors the bump connector being embedded into the layer connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73253—Bump and layer connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
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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
- H02M7/5387—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 in a bridge configuration
Definitions
- the present invention relates to a power conversion device, and more particularly, to a power conversion device including a horizontal switch element.
- a power conversion device including a horizontal switch element is known.
- Such a power converter is disclosed in, for example, Japanese Patent Application Laid-Open No. 2012-222361.
- JP-A-2012-222361 discloses a group III-V transistor (horizontal switch element) and a group IV vertical transistor connected to the group III-V transistor and controlling the driving of the group III-V transistor (for control).
- a power conversion device including a switch element) is disclosed.
- the electrodes of the group III-V transistor and the electrode of the group IV vertical transistor are connected so as to be in direct contact with each other.
- the present invention has been made to solve the above-described problems, and one object of the present invention is to suppress a decrease in power conversion function in a power conversion device including a lateral switch element. It is to provide a possible power conversion device.
- a power conversion device is disposed between a horizontal switch element, a control switch element connected to the horizontal switch element and controlling driving of the horizontal switch element, and the horizontal switch element and the control switch element.
- a heat conduction suppressing member for suppressing heat generated from the horizontal switch element from being transmitted to the control switch element.
- a heat conduction suppression member is provided that is disposed between the horizontal switch element and the control switch element and suppresses heat generated from the horizontal switch element from being transmitted to the control switch element.
- the power conversion device it is possible to suppress a decrease in the function of the power conversion device.
- FIG. 1 is a circuit diagram of a three-phase inverter device including a power module according to a first embodiment.
- FIG. It is a top view of the power module by a 1st embodiment.
- FIG. 3 is a cross-sectional view taken along line 200-200 in FIG.
- FIG. 3 is a cross-sectional view taken along line 300-300 in FIG.
- FIG. 4 is a sectional view taken along line 400-400 in FIG. It is a top view of the 1st board
- FIG. 20 is a cross-sectional view taken along line 500-500 in FIG.
- the three-phase inverter device 100 is configured by electrically connecting three power modules 101a, 101b, and 101c that respectively perform U-phase, V-phase, and W-phase power conversion. Has been.
- Each of the power modules 101a, 101b, and 101c converts DC power input from a DC power source (not shown) through input terminals P and N into AC power of three phases (U phase, V phase, and W phase). Is configured to do.
- the power modules 101a, 101b, and 101c are configured to output the U-phase, V-phase, and W-phase AC power converted as described above to the outside via the output terminals U, V, and W, respectively. ing.
- the output terminals U, V, and W are connected to a motor (not shown).
- the power module 101a includes two horizontal switch elements 11a and 12a, two control switch elements 13a and 14a connected to each of the two horizontal switch elements, and a snubber capacitor 15.
- the lateral switch elements 11a and 12a are both normally-on switch elements (currents between the drain electrodes D1a and D2a and the source electrodes S1a and S2a when the voltage applied to the gate electrodes G1a and G2a is 0 V). Switch element configured to flow.
- the control switch elements 13a and 14a are both normally-off switch elements (between the drain electrode D3a and the source electrode S3a when the voltage applied to the gate electrodes G3a and G4a is 0 V, and the drain electrode D4a). Switch element configured so that no current flows between the source electrode S4a and the source electrode S4a.
- Control switch elements 13a and 14a are cascode-connected to horizontal switch elements 11a and 12a.
- the gate electrode G1a (G2a) of the horizontal switch element 11a (12a) is connected to the source electrode S3a (S4a) of the control switch element 13a (14a).
- the control switch element 13a (14a) controls the drive (switching) of the horizontal switch element 11a (12a) by performing switching based on the control signal input to the gate electrode G3a (G4a). It is configured as follows.
- the switch circuit including the normally-on lateral switch element 11a (12a) and the normally-off control switch element 13a (14a) is configured to be controlled as a normally-off type as a whole.
- the power module 101b also includes two normally-on lateral switch elements 11b and 12b and two normally-off control elements that are cascode-connected to each of the two lateral switch elements. Switch elements 13b and 14b and a snubber capacitor 16 are included.
- the normally-on horizontal switch element 11b (12b) and the normally-off control switch element 13b (14b) constitute a normally-off switch circuit.
- the control switch element 13b (14b) is configured to control the switching of the horizontal switch element 11b (12b) by performing switching based on a control signal input to the gate electrode G3b (G4b). ing.
- the power module 101c includes two normally-on type horizontal switching elements 11c and 12c and two normally-off type cascode-connected to each of the two horizontal switching elements.
- the normally-on lateral switch element 11c (12c) and the normally-off control switch element 13c (14c) constitute a normally-off switch circuit.
- the control switch element 13c (14c) is configured to control the switching of the horizontal switch element 11c (12c) by performing switching based on a control signal input to the gate electrode G3c (G4c). ing.
- the power module 101a includes a first substrate 1, a second substrate 2, two horizontal switch elements 11a and 12a, two control switch elements 13a and 14a, One snubber capacitor 15, two heat conduction suppression members 18 a and 18 b, two heat conduction members 19 a and 19 b, and a sealing resin 20 are provided.
- the second substrate 2, the horizontal switch element 11a (12a), the heat conduction suppressing member 18a (18b), the first substrate 1 and the control switch element 13a (14a) are stacked in this order from the bottom (Z1 direction). ing.
- the first substrate 1 has a thermal conductivity of about 0.5 to about 1 W / mK
- the second substrate 2 has a thermal conductivity of about 50 W / mK
- the heat conduction suppressing members 18a and 18b have a thermal conductivity of about 0.1 W / mK
- the heat conduction members 19a and 19b have a thermal conductivity of about 1 to about 5 W / mK
- the sealing resin 20 has a thermal conductivity of about 0.1 to about 0.5 W / mK.
- the first substrate 1 and the second substrate 2 are arranged at a predetermined interval in the vertical direction (Z direction) so as to face each other.
- the first substrate 1 is disposed on the upper side (Z2 direction side)
- the second substrate 2 is disposed on the lower side (Z1 direction side).
- the horizontal switch element 11a, the horizontal switch element 12a, and the snubber capacitor 15 are composed of a lower surface of the first substrate 1 (surface on the Z1 direction side) and an upper surface of the second substrate 2 (surface on the Z2 direction side). It is arranged between.
- the control switch element 13 a and the control switch element 14 a are disposed on the upper surface of the first substrate 1.
- a sealing resin 20 is filled between the lower surface of the first substrate 1 and the upper surface of the second substrate 2.
- the first substrate 1 is provided with through holes 21 a, 22 a, and 23 a formed so as to penetrate in the vertical direction (Z direction) of the first substrate 1.
- conductive patterns 24a, 25a, 26a, 27a, 28a, 29a, 30a, and 31a are provided on the upper surface (Z2 direction) of the first substrate 1.
- conductive patterns 24d, 25c, 28d, 29c, 32, and 33 are provided on the lower surface (Z1 direction) of the first substrate 1.
- the conductive patterns 24a and 24d are connected by an electrode 24b penetrating the inside of the first substrate 1.
- the conductive patterns 24 a and 32 are connected by an electrode 24 c that penetrates the inside of the first substrate 1.
- the conductive patterns 25 a and 25 c are connected by an electrode 25 b that penetrates the inside of the first substrate 1.
- the conductive patterns 28 a and 28 d are connected by an electrode 28 b that penetrates the inside of the first substrate 1.
- the conductive patterns 28 a and 33 are connected by an electrode 28 c that penetrates the inside of the first substrate 1.
- the conductive patterns 29 a and 29 c are connected by an electrode 29 b that penetrates the inside of the first substrate 1.
- the electrodes 24b and 28b are examples of “through electrodes”.
- the electrode 24b (28b) is configured to connect the heat conduction suppressing member 18a (18b) and the control switch element 13a (14a). As shown in FIGS. 2 and 3, the electrode 24b (28b) is disposed at a position shifted from the control switch element 13a (14a) in plan view (as viewed in the Z direction).
- the first substrate 1 is mainly formed of a material having a thermal conductivity of about 0.5 to about 1 W / mK. That is, the first substrate 1 has a thermal conductivity lower than that of the thermal conductive member 19a (19b) (thermal conductivity of about 1 to about 5 W / mK).
- conductive patterns 34, 35, 36, 37, 38, 39 and 40 are provided on the upper surface (Z2 direction) of the second substrate 2. Also, as shown in FIGS. 3 to 5, a conductive pattern 41 is provided on the lower surface (Z1 direction) of the second substrate 2.
- the second substrate 2 is mainly made of a material having a thermal conductivity of about 50 W / mK. That is, the second substrate 2 mainly includes the heat conduction member 19a (19b) (heat conductivity of about 1 to about 5 W / mK) and the heat conduction suppression member 18a (18b) (heat conductivity of about 0.1 W / mK). Higher thermal conductivity than
- columnar conductors 21, 22 and 23 are disposed through the through holes 21a, 22a and 23a of the first substrate 1, respectively.
- One of the columnar conductors 21 is connected to the input terminal P, and the other is connected to the conductive pattern 34 of the second substrate 2.
- One of the columnar conductors 22 is connected to the input terminal N, and the other is connected to the conductive pattern 40 of the second substrate 2.
- One of the columnar conductors 23 is connected to the output terminal U, and the other is connected to the conductive pattern 37 of the second substrate 2.
- a columnar electrode 26b is connected to the conductive pattern 26a on the surface above the first substrate 1 (Z2 direction).
- the columnar electrode 26b is connected to an external electrode (not shown).
- a columnar electrode 27b is connected to the conductive pattern 27a.
- the columnar electrode 27b is connected to a circuit (not shown) that generates a control signal for controlling the gate electrode G3a of the control switch element 13a.
- a columnar electrode 30b is connected to the conductive pattern 30a.
- the columnar electrode 30b is connected to an external electrode (not shown).
- a columnar electrode 31b is connected to the conductive pattern 31a.
- the columnar electrode 31b is connected to a circuit (not shown) that generates a control signal for controlling the gate electrode G4a of the control switch element 14a.
- the conductive pattern 25c of the first substrate 1 and the conductive pattern 36 of the second substrate 2 are connected by a columnar electrode 36a.
- the conductive pattern 29c of the first substrate 1 and the conductive pattern 39 of the second substrate 2 are connected by a columnar electrode 39a.
- the conductive pattern 24d of the first substrate 1 and the conductive pattern 35 of the second substrate 2 are connected by a columnar electrode 35a.
- the conductive pattern 28d of the first substrate 1 and the conductive pattern 38 of the second substrate 2 are connected by a columnar electrode 38a.
- the conductive pattern 24d of the first substrate 1 and the conductive pattern 37 of the second substrate 2 are connected by a columnar electrode 37a.
- the conductive pattern 28d of the first substrate 1 and the conductive pattern 40 of the second substrate 2 are connected by a columnar electrode 40a.
- the gate electrode G1a (G2a), the source electrode S1a (S2a), and the drain electrode D1a (D2a) are provided on the same side (surface). It is configured to be. That is, when the horizontal switch element 11a (12a) is driven, a current mainly flows through one surface where each electrode is provided, and therefore heat is generated mainly from the surface where each electrode is provided. In other words, in the horizontal switch element 11a (12a), the surface on which each electrode is provided becomes a heat generating surface.
- the lateral switch element 11a (12a) is made of a semiconductor material containing GaN (gallium nitride). Further, the horizontal switch element 11a (12a) has heat resistance at a temperature of about 200 ° C.
- the drain electrode D1a (D2a) is connected to the conductive pattern 34 (37) of the second substrate 2 as shown in FIGS.
- the source electrode S1a (S2a) is connected to the conductive pattern 36 (39) of the second substrate 2.
- the gate electrode G1a (G2a) is connected to the conductive pattern 35 (38) of the second substrate 2.
- the horizontal switch element 11a (12a) includes a gate electrode G1a (G2a), a source electrode S1a (S2a), and a drain electrode D1a (D2a) provided below (Z1 direction).
- G2a gate electrode
- S1a source electrode
- D1a drain electrode
- Two substrates 2 are joined to each conductive pattern via a joining layer made of solder or the like. That is, the horizontal switch element 11a (12a) is bonded to the second substrate 2 with the heat generating surface facing the second substrate 2 side.
- the control switch element 13a (14a) is constituted by a vertical device having a gate electrode G3a (G4a), a source electrode S3a (S4a), and a drain electrode D3a (D4a). Specifically, in the control switch element 13a (14a), the gate electrode G3a (G4a) and the source electrode S3a (S4a) are disposed on the upper side (Z2 direction), and the drain electrode D3a (D4a) is disposed on the lower side (Z1 direction). ) Is located on the side.
- the control switch element 13a (14a) is made of a semiconductor material containing silicon (Si).
- the control switch element 13a (14a) has heat resistance at a temperature of about 150 ° C.
- control switch element 13a (14a) is disposed on the upper surface (Z2 direction) of the first substrate 1. Specifically, as shown in FIGS. 2 and 3, the control switch element 13a (14a) has a drain electrode D3a (D4a) bonded to the conductive pattern 25a (29a) of the first substrate 1 made of solder or the like. Connected through layers. Further, the control switch element 13a (14a) includes a source electrode S3a (S4a), a conductive pattern 24a and 26a (28a and 30a) of the first substrate 1, and a wire 131 made of a metal such as aluminum or copper, respectively. 132 (141 and 142).
- the gate electrode G3a (G4a) is connected to the conductive pattern 27a (31a) of the first substrate 1 through a wire 133 (143) made of metal such as aluminum or copper.
- the control switch element 13a (14a) is disposed on the opposite side (Z2 direction side) of the horizontal switch element 11a (12a) via the heat conduction suppressing member 18a (18b).
- the snubber capacitor 15 is arranged so as to connect the conductive pattern 40 of the second substrate 2 and the conductive pattern 34 as shown in FIG.
- the heat conduction suppressing member 18a (18b) is provided between the horizontal switch element 11a (12a) and the control switch element 13a (14a). It arrange
- the heat conduction suppressing member 18a (18b) is located above the horizontal switch element 11a (12a) so as to cover the entire surface opposite to the heat generation surface (Z2 direction side) of the horizontal switch element 11a (12a). They are arranged in the (Z2 direction).
- Thermal conduction suppressing member 18a (18b) includes an insulating member (for example, nanoporous silica) and a metallized layer formed on the surface of the insulating member.
- the metallized layer of the heat conduction suppressing member 18a (18b) is electrically connected to the source electrode S3a (S4a) of the control switch element 13a (14a).
- the upper surface (Z2 direction) side of the metallization layer of the heat conduction suppressing member 18a (18b) is made of solder or the like on the conductive pattern 24d (28d) of the first substrate 1. They are connected via a bonding layer.
- the surface on the lower side (Z1 direction) of the metallization layer of the heat conduction suppressing member 18a (18b) is the surface on the opposite side (Z2 direction side) to the surface on which each electrode of the horizontal switch element 11a (12a) is disposed. Are connected through a bonding layer made of solder or the like.
- the heat conduction member 19a (19b) having a higher heat conductivity than the heat conduction suppressing member 18a (18b) has a control switch element 13a (14a) with respect to the horizontal switch element 11a (12a). It is arrange
- the heat conducting member 19a (19b) is made of an insulating member.
- the heat conductive member 19a (19b) is made of a polyimide resin in which a filler made of ceramic (for example, BN (boron nitride)) is dispersed.
- the heat conducting member 19a (19b) is disposed on the heat generating surface side (Z1 direction side) of the horizontal switch element 11a (12a). That is, the heat conducting member 19a (19b) is filled between the horizontal switch element 11a (12a) and the second substrate 2. Thereby, the heat generated from the heat generating surface (surface on the Z1 direction side) of the horizontal switch element 11a (12a) is transferred to the second substrate 2 side (Z1 direction side) via the heat conducting member 19a (19b). It is comprised so that.
- the sealing resin 20 is filled between the lower surface (the surface on the Z1 direction side) of the first substrate 1 and the upper surface (the surface on the Z2 direction side) of the second substrate 2. That is, the horizontal switch element 11a (12a), the heat conduction suppressing member 18a (18b), and the heat conduction member 19a (19b) are sealed with the sealing resin 20. Moreover, the sealing resin 20 has a lower thermal conductivity than the thermal conductive member 19a (19b). Moreover, the sealing resin 20 has high heat resistance.
- the sealing resin 20 is made of, for example, an epoxy resin.
- the method of assembling the power module 101a includes a step of mounting the control switch element 13a (14a) on the first substrate 1, a step of mounting each component on the second substrate 2, and a heat conducting member 19a ( 19b), a step of bonding the first substrate 1, the second substrate 2 and the heat conduction suppressing member 18a (18b), a step of wire-wiring the control switch element 13a (14a), and a sealing resin And a step of sealing at 20.
- the control switch element 13a (14a) In the process of mounting the control switch element 13a (14a) on the first substrate 1, the control switch element 13a (14a) is different from the horizontal switch element 11a (12a) of the first substrate 1 as shown in FIG. It arrange
- the lateral switch elements 11a and 12a, the snubber capacitor 15, the columnar conductor are formed on the surface above the second substrate 2 (Z2 direction). 21, 22, 23, and columnar electrodes 35a, 36a, 37a, 38a, 39a, and 40a are mounted (arranged).
- the heat conducting member 19a (19b) is interposed between the horizontal switch element 11a (12a) and the second substrate 2 as shown in FIG. Filled.
- the second substrate 2 In the step of joining the first substrate 1, the second substrate 2, and the heat conduction suppressing member 18a (18b), as shown in FIG. 15, the second substrate 2, the heat conduction suppressing member 18a (18b), the first substrate from the bottom.
- the layers are stacked in the order of 1 and are bonded to each other through a bonding layer.
- the source electrode S3a (S4a) of the control switch element 13a (14a) is connected to the conductive pattern 24a of the first substrate 1 as shown in FIGS. And 26a (28a and 30a) via wires 131 and 132 (141 and 142) made of metal such as aluminum or copper, respectively, and the gate electrode G3a (G4a) of the control switch element 13a (14a) ) Is connected to the conductive pattern 27a (31a) of the first substrate 1 via a wire 133 (143) made of a metal such as aluminum or copper.
- the sealing resin 20 includes the lower surface of the first substrate 1 (the surface on the Z1 direction side) and the upper surface of the second substrate 2 (the surface on the Z2 direction side). ) And are sealed.
- the power module 101a is completed.
- the power modules 101b and 101c are assembled in the same manner. Further, the power modules 101a to 101c may be integrally assembled from the same first substrate and second substrate.
- the heat is generated between the horizontal switch element 11a (12a) and the horizontal switch element 11a (12a) and the control switch element 13a (14a).
- the heat conduction suppressing member 18a (18b) for suppressing the transmission to 13a (14a)
- the heat conducting member 19a (19b) is formed of an insulating member, thereby preventing a short circuit between the electrodes of the lateral switch element 11a (12a).
- the heat generated from the horizontal switch element 11a (12a) can be transmitted in the opposite direction to the control switch element 13a (14a).
- the heat conduction member 19a (19b) is disposed on the heat generating surface side (Z1 direction side) of the horizontal switch element 11a (12a), thereby the horizontal switch element 11a (12a). ) Can be efficiently transmitted by the heat conduction member 19a (19b).
- control switch element 13a (14a) is placed on the side opposite to the heat generating surface of the horizontal switch element 11a (12a) (on the Z2 direction side) 18a (18b). ), The heat generated from the heat generating surface of the horizontal switch element 11a (12a) can be more effectively suppressed from being transmitted to the control switch element 13a (14a).
- the heat conduction suppressing member 18a (18b) is disposed so as to cover the entire surface opposite to the heat generation surface (Z2 direction side) of the horizontal switch element 11a (12a). By doing so, it is possible to more effectively suppress the heat generated from the heat generating surface of the horizontal switch element 11a (12a) from being transmitted to the control switch element 13a (14a).
- the horizontal switch element 11a (12a) is sealed with the sealing resin 20 having a lower thermal conductivity than that of the heat conductive member 19a (19b). It is possible to suppress the heat generated from the horizontal switch element 11a (12a) from being transmitted to the control switch element 13a (14a) while suppressing the entry of foreign matter into the 11a (12a).
- the first substrate 1 is provided by providing the first substrate 1 disposed between the heat conduction suppressing member 18a (18b) and the control switch element 13a (14a). In addition, the first substrate 1 can also suppress the heat from being transmitted to the control switch element 13a (14a).
- the first substrate 1 is formed of a material having a lower thermal conductivity than the heat conductive member 19a (19b), so that the heat conduction suppressing member 18a (18b) and the first substrate 1 are formed.
- the heat transfer to the control switch element 13a (14a) can be effectively suppressed by both the one substrate 1.
- control switch element 13a (14a) is disposed on the surface of the first substrate 1 opposite to the lateral switch element 11a (12a) (Z2 direction side).
- control switch element 13a (14a) is disposed on the surface of the first substrate 1 opposite to the lateral switch element 11a (12a) (Z2 direction side).
- the heat conduction suppressing member 18a (18b) and the control switch element 13a (14a) are connected to the first substrate 1 so as to penetrate the first substrate 1.
- An electrode 24b (28b) made of a conductive member is provided, and the electrode 24b (28b) is arranged at a position shifted from the control switch element 13a (14a) in plan view (as viewed in the Z direction). Thereby, it can suppress that the heat which generate
- the metallization layer of the heat conduction suppressing member 18a (18b) is electrically connected to the control switch element 13a (14a), whereby the heat conduction suppressing member 18a (18b) is electrically connected.
- the surface opposite to the electrode of the horizontal switch element 11a (12a) (Z2 direction side) are connected to the opposite side of the electrode of the horizontal switch element 11a (12a) (Z2 direction side). The surface potential can be fixed and stabilized.
- the heat conduction member 19a (19b) is disposed on the opposite side (Z1 direction side) from the horizontal switch element 11a (12a), and the horizontal switch element 11a (12a). Is provided on the second substrate 2 while suppressing the heat generated from the lateral switch element 11a (12a) from being transmitted to the control switch element 13a (14a) side. 11a (12a) can be easily arranged.
- the heat conduction member 19a (19b) is filled between the horizontal switch element 11a (12a) and the second substrate 2 to thereby form the horizontal switch element 11a (12a). Heat can be satisfactorily transmitted to the second substrate 2 via the heat conducting member 19a (19b), so that it is possible to easily suppress the heat from being transmitted to the control switch element 13a (14a) side. it can.
- the second substrate 2 is formed of a material having a higher thermal conductivity than the heat conduction member 19a (19b) and the heat conduction suppression member 18a (18b), thereby forming a horizontal type. Heat generated from the switch element 11a (12a) can be easily dissipated from the second substrate 2 side opposite to the control switch element 13a (14a).
- the second substrate 2 the horizontal switch element 11 a (12 a), the heat conduction suppressing member 18 a (18 b), the first substrate 1, and the control switch element 13 a (14 a)
- the power module 101a three-phase inverter device 100
- control switch element 13a (14a) is cascode-connected to the horizontal switch element 11a (12a), so that the gate electrode G3a ( By performing switching based on the control signal input to G4a), the switching of the horizontal switch element 11b (12b) can be easily controlled.
- the control switch element 13a (14a) includes a vertical device. Thereby, it can suppress that the power conversion function of the power module 101a (three-phase inverter apparatus 100) using the control switch element 13a (14a) of a vertical device falls.
- the power module 102a by 2nd Embodiment is demonstrated.
- the horizontal switch elements 11a and 12a are covered with the heat conduction suppressing members 18a and 18b, respectively, the horizontal switch elements 11a and 12a are replaced with a common heat conduction suppressing member.
- the example of the structure covered with 18c is demonstrated.
- the power module 102a is an example of a “power converter”.
- the configuration of the power module 102a according to the second embodiment will be described.
- This power module 102a performs U-phase power conversion in a three-phase inverter device. That is, also in the second embodiment, as in the first embodiment, two power modules (power modules that perform V-phase and W-phase power conversion) having substantially the same configuration as the power module 102a are power modules. It is provided separately from 102a.
- the power module 102a that performs U-phase power conversion will be described for the sake of simplicity.
- one heat conduction suppressing member 18 c is arranged so as to cover the lower (Z1 direction) side surface of the first substrate 1. Further, the heat conduction suppressing member 18c is provided with a cut or a through hole so as to expose the conductive patterns 24d, 25c, 28d, 29c, 32 and 33 of the first substrate 1. As shown in FIG. 18, one heat conduction suppressing member 18c is arranged so as to cover both the horizontal switch elements 11a and 12a.
- the heat conduction suppressing member 18c transmits heat generated from the horizontal switch element 11a (12a) to the control switch element 13a (14a) between the horizontal switch elements 11a and 12a and the control switch elements 13a and 14a. It is arranged to suppress this. Specifically, as shown in FIG. 18, the heat conduction suppressing member 18 c has the horizontal switch elements 11 a and 12 a so as to cover the entire surface opposite to the heat generating surface of the horizontal switch elements 11 a and 12 a (Z2 direction side). Is arranged above (Z2 direction). Further, the heat conduction suppressing member 18c has a heat conductivity of about 0.1 W / mK.
- one heat conduction suppressing member 18c is disposed so as to cover the entire surface on the opposite side (Z2 direction side) to the heat generating surfaces of the two horizontal switch elements 11a and 12a. Therefore, it is possible to suppress heat transfer in a wide range while reducing the number of parts.
- the three-phase inverter device is shown as an example of the power converter, but a power converter other than the three-phase inverter device may be used.
- the lateral switch element is made of a semiconductor material containing GaN (gallium nitride).
- the lateral switch element is a group III-V group other than GaN. It may be made of a material or a group IV material such as C (diamond).
- the heat conduction suppression member showed the example arrange
- the horizontal switch element may be disposed so as to cover a part thereof.
- the heat conduction suppressing member includes an insulating member and a metallized layer.
- heat generated from the horizontal switch element is transmitted to the control switch element.
- the heat conduction suppressing member may have a configuration other than an insulating member and a metallized layer.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Thermal Sciences (AREA)
- Inverter Devices (AREA)
Abstract
Description
まず、図1を参照して、第1実施形態によるパワーモジュール101a、101bおよび101cを含む3相インバータ装置100の構成について説明する。なお、パワーモジュール101a~101cおよび3相インバータ装置100は、「電力変換装置」の一例である。
次に、図17および図18を参照して、第2実施形態によるパワーモジュール102aについて説明する。この第2実施形態では、横型スイッチ素子11aおよび12aを、それぞれ、熱伝導抑制部材18aおよび18bにより覆う構成の上記第1実施形態と異なり、横型スイッチ素子11aおよび12aを、共通の熱伝導抑制部材18cにより覆う構成の例について説明する。なお、パワーモジュール102aは、「電力変換装置」の一例である。
2 第2基板
11a、11b、11c、12a、12b、12c 横型スイッチ素子
13a、13b、13c、14a、14b、14c 制御用スイッチ素子
18a、18b、18c 熱伝導抑制部材
19a、19b 熱伝導部材
20 封止樹脂
24b、28b 電極(貫通電極)
100 3相インバータ装置(電力変換装置)
101a、101b、101c、102a パワーモジュール(電力変換装置)
Claims (19)
- 横型スイッチ素子(11a~11c、12a~12c)と、
前記横型スイッチ素子に接続され、前記横型スイッチ素子の駆動を制御する制御用スイッチ素子(13a~13c、14a~14c)と、
前記横型スイッチ素子と前記制御用スイッチ素子との間に配置され、前記横型スイッチ素子から発生した熱が前記制御用スイッチ素子に伝わるのを抑制するための熱伝導抑制部材(18a~18c)とを備える、電力変換装置。 - 前記横型スイッチ素子に対して前記制御用スイッチ素子とは反対側に配置され、前記熱伝導抑制部材よりも熱伝導率の高い熱伝導部材(19a、19b)をさらに備える、請求項1に記載の電力変換装置。
- 前記熱伝導部材は、絶縁性の部材により構成されている、請求項2に記載の電力変換装置。
- 前記横型スイッチ素子は、発熱面を含み、
前記熱伝導部材は、前記横型スイッチ素子の前記発熱面側に配置されている、請求項2または3に記載の電力変換装置。 - 前記制御用スイッチ素子は、前記横型スイッチ素子の前記発熱面とは反対側に前記熱伝導抑制部材を介して配置されている、請求項4に記載の電力変換装置。
- 前記熱伝導抑制部材は、前記横型スイッチ素子の発熱面とは反対側の面全体を覆うように配置されている、請求項4または5に記載の電力変換装置。
- 前記横型スイッチ素子は、前記熱伝導部材よりも熱伝導率の低い封止樹脂(20)により封止されている、請求項2~6のいずれか1項に記載の電力変換装置。
- 前記熱伝導抑制部材と前記制御用スイッチ素子との間に配置された第1基板(1)をさらに備える、請求項1~7のいずれか1項に記載の電力変換装置。
- 前記第1基板は、前記熱伝導部材よりも熱伝導率の低い材料により形成されている、請求項8に記載の電力変換装置。
- 前記制御用スイッチ素子は、前記第1基板の前記横型スイッチ素子とは反対側の表面に配置されている、請求項8または9に記載の電力変換装置。
- 前記第1基板は、前記第1基板を貫通するように設けられ、前記熱伝導抑制部材と前記制御用スイッチ素子とを接続する導電部材からなる貫通電極(24b、28b)を含み、
前記貫通電極は、平面視において、前記制御用スイッチ素子に対してずれた位置に配置されている、請求項8~10のいずれか1項に記載の電力変換装置。 - 前記熱伝導抑制部材は、絶縁性部材と、前記絶縁性部材の表面に形成されたメタライズ層とを含み、
前記熱伝導抑制部材のメタライズ層は、前記制御用スイッチ素子と電気的に接続されている、請求項1~11のいずれか1項に記載の電力変換装置。 - 前記熱伝導部材に対して前記横型スイッチ素子とは反対側に配置され、前記横型スイッチ素子が配置される第2基板(2)をさらに備える、請求項2に記載の電力変換装置。
- 前記熱伝導部材は、前記横型スイッチ素子と前記第2基板との間に充填されている、請求項13に記載の電力変換装置。
- 前記第2基板は、前記熱伝導部材および前記熱伝導抑制部材よりも熱伝導率の高い材料により形成されている、請求項13または14に記載の電力変換装置。
- 前記第2基板、前記横型スイッチ素子、前記熱伝導抑制部材および前記制御用スイッチ素子は、この順番で積層されている、請求項13~15のいずれか1項に記載の電力変換装置。
- 前記制御用スイッチ素子が配置された第1基板(1)をさらに備え、
前記第2基板、前記横型スイッチ素子、前記熱伝導抑制部材、前記第1基板および前記制御用スイッチ素子は、この順番で積層されている、請求項16に記載の電力変換装置。 - 前記制御用スイッチ素子は、前記横型スイッチ素子にカスコード接続されている、請求項1~17のいずれか1項に記載の電力変換装置。
- 前記制御用スイッチ素子は、縦型デバイスを含む、請求項1~18のいずれか1項に記載の電力変換装置。
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PCT/JP2013/057709 WO2014147720A1 (ja) | 2013-03-18 | 2013-03-18 | 電力変換装置 |
JP2015506403A JP6044703B2 (ja) | 2013-03-18 | 2013-03-18 | 電力変換装置 |
CN201380074704.7A CN105190881A (zh) | 2013-03-18 | 2013-03-18 | 电力变换装置 |
US14/854,042 US20160007500A1 (en) | 2013-03-18 | 2015-09-15 | Power converter apparatus |
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US14/854,042 Continuation US20160007500A1 (en) | 2013-03-18 | 2015-09-15 | Power converter apparatus |
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EP2811642A4 (en) * | 2012-01-31 | 2015-10-07 | Yaskawa Denki Seisakusho Kk | ELECTRIC POWER CONVERTING DEVICE AND METHOD FOR MANUFACTURING ELECTRIC POWER CONVERTING DEVICE |
US10411609B2 (en) * | 2017-12-22 | 2019-09-10 | Panasonic Intellectual Property Management Co., Ltd. | Substrate mounted inverter device |
DE102020207701A1 (de) | 2020-06-22 | 2021-12-23 | Zf Friedrichshafen Ag | Leistungsmodul zum Betreiben eines Elektrofahrzeugantriebs mit einem Zwischenkreiskondensator |
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- 2013-03-18 CN CN201380074704.7A patent/CN105190881A/zh active Pending
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