JP4313273B2 - Power drive unit - Google Patents
Power drive unit Download PDFInfo
- Publication number
- JP4313273B2 JP4313273B2 JP2004262674A JP2004262674A JP4313273B2 JP 4313273 B2 JP4313273 B2 JP 4313273B2 JP 2004262674 A JP2004262674 A JP 2004262674A JP 2004262674 A JP2004262674 A JP 2004262674A JP 4313273 B2 JP4313273 B2 JP 4313273B2
- Authority
- JP
- Japan
- Prior art keywords
- power module
- power
- case
- unit
- heat sink
- 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.)
- Expired - Fee Related
Links
- 239000000463 materials Substances 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 description 19
- 238000003780 insertion Methods 0.000 description 9
- 230000000875 corresponding Effects 0.000 description 8
- 239000000758 substrates Substances 0.000 description 7
- 239000004065 semiconductors Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001360 synchronised Effects 0.000 description 1
Images
Description
The present invention relates to a power drive unit.
In recent years, various hybrid vehicles equipped with an internal combustion engine, an electric motor, and a power storage device such as a battery have been proposed. In such a hybrid vehicle, the internal combustion engine and the electric motor are controlled in accordance with the traveling state of the vehicle (at high speed or low speed).
In such an electric motor in a hybrid vehicle, the direct current output from the power storage device is generally an alternating current by a power drive unit, more precisely, a three-phase power module (three-phase inverter circuit module) in the power drive unit. The alternating current is sent to the stator of the electric motor to be operated.
Incidentally, since the power module in the power drive unit described above generates heat during operation, a means for cooling (dissipating heat) is required. Therefore, for example, as in the technique described in Patent Document 1, a technique in which a heat radiating plate, that is, a heat sink is arranged in a power module or the like is widely known.
However, in the above-described Patent Document 1, since one heat sink is arranged for a three-phase (plurality) power module, any one of the three-phase power modules is arranged. If an abnormality or failure occurs and you want to replace only one phase power module, remove all the screws and connection terminals that connect the power module to the heat sink or electronic circuit board, and then replace it with a new power module. It was necessary to install it, and the replacement work was complicated.
In addition, when a design change occurs in a semiconductor element (such as an IGBT (Insulated-Gate Bipolar Transistor)) that constitutes a power module, an electronic circuit that drives the semiconductor element when only a change in design is attempted. It is necessary to remove all screws, connection terminals, and the like that connect the substrate and the semiconductor element, and the replacement work is complicated as described above. Therefore, there remains room for improvement in maintainability.
Therefore, an object of the present invention is to eliminate the above-mentioned problems, and while it can be easily assembled, it is possible to easily replace only when a failure occurs in a power module or the like so that maintainability can be improved. It is to provide a power drive unit.
In order to achieve the above object, according to claim 1, in a power drive unit comprising at least a plurality of power modules each constituting a phase, the power drive unit is disposed in each of the plurality of power modules, and is independent for each of the configured phases. A heat sink that unitizes the power module, a case that accommodates the unit composed of the power module and the heat sink in parallel so as to be independent for each of the respective phases, and the entire side surface of the case together provided formed a stepped portion, so that the step portion is exposed to the heat radiating plate, wherein the case enclose the periphery of the unit, is further formed on the inside of the case, the power module of the unit A plurality of openings, a positioning protrusion formed on an inner wall of the opening, and a front Formed on the outer wall of the power module in the unit was configured with a said fitting portion to the positioning protrusion is fitted.
According to a second aspect of the present invention, the case is made of a material that can dissipate heat.
In the power drive unit according to claim 1, each of the plurality of power modules constituting the phase is disposed , and the heat sink unitizing the power module so as to be independent for each phase constituted , A case that accommodates a unit composed of a power module and a heat sink in parallel so as to be independent for each configured phase, and a step portion formed over the entire side surface of the case; so as to expose the heat radiating plate, wherein the case enclose the periphery of the unit, it is further formed on the inside of the casing, and a plurality of openings power module of the unit is disposed on the inner wall of the opening A positioning protrusion formed, and the positioning protrusion formed on the outer wall of the power module in the unit. And configured to include a fitting portion to be engaged, i.e., since the power module and the heat sink as a unit, while being capable assembled easily, to any of a plurality of power modules When a failure occurs, only it can be easily replaced, so that maintainability can be improved. The same applies when a design change occurs in a semiconductor element or the like constituting the power module. Further, the power module of the unit can be accurately accommodated in the expected position in the case described above, and therefore it becomes possible to assemble more easily.
Further, in the power drive unit according to claim 2, since the case is by Uni configured Ru fabricated from possible heat dissipation material, in addition to the effects mentioned above, through the case and power module generates heat during operation cooling (Can be radiated).
The best mode for carrying out a power drive unit according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram generally showing a control device for a hybrid vehicle including a control device including a power drive unit according to the first embodiment of the present invention.
In FIG. 1, reference numeral 10 indicates an internal combustion engine (hereinafter referred to as “engine”). The output of the engine 10 is input to the speed change mechanism 14 via the drive shaft 12. The engine 10 is an injection type spark ignition type four-cylinder engine using gasoline as fuel. The speed change mechanism 14 includes an automatic transmission, and is connected to drive wheels 16 of a hybrid vehicle (not shown) on which the engine 10 is mounted to change the engine output and transmit the power to the drive wheels 16 to drive the hybrid vehicle.
A motor (electric motor) 20 is connected to the drive shaft 12 between the engine 10 and the speed change mechanism 14. The motor 20 always rotates when the engine 10 rotates, and is energized at the time of starting to crank and start the engine 10, and also energized at the time of acceleration or the like to assist (increase) the rotation of the engine 10. When the motor 20 is not energized, the motor 20 idles with the rotation of the engine 10, and at the time of deceleration when the fuel supply to the engine 10 is stopped (fuel cut), the kinetic energy generated by the rotation of the drive shaft 12 is converted into electric energy. In other words, the motor 20 functions as a generator.
The motor 20 is connected to a battery (power storage device) 24 via a power drive unit (hereinafter referred to as “PDU”) 22. The motor 20 is a DC brushless motor, more specifically, an AC synchronous motor. The PDU 22 includes a power module (three-phase inverter circuit) as will be described later, converts direct current (electric power) supplied (discharged) from the battery 24 into alternating current and supplies the alternating current to the motor 20, and generates power by regenerative operation of the motor 20. The converted alternating current is converted into direct current and supplied to the battery 24 (charging the battery 24). Thus, in the illustrated hybrid vehicle, the drive / regeneration of the motor 20 is controlled via the PDU 22. The battery 24 is formed by appropriately connecting a number of nickel metal hydride (Ni-MH) batteries in series.
A current sensor 26 is disposed between the PDU 22 and the motor 20. The current sensor 26 outputs a signal corresponding to the current supplied (output) from the PDU 22 to the motor 20.
Further, as shown in the figure, an engine control unit (referred to as “ENGECU”) 28 that controls the operation of the engine 10, and a motor control unit (referred to as “MOTECU”) 30 that controls the operation of the motor 20 based on the output of the current sensor 26 and the like. , And a battery control unit (referred to as “BATECU”) 32 that performs charge / discharge management by calculating a state of charge (SOC) of the battery 24, and a shift control unit (“T”) that controls the operation of the transmission mechanism 14. / MECU)) 34 is provided. The ECUs (Electronic Control Units) such as the above-described ENGECU 28 are all composed of a microcomputer and are connected to each other via a bus 36 so as to be communicable with each other.
Next, the PDU 22 according to the first embodiment will be described. FIG. 2 is an exploded perspective view showing the PDU 22 as a whole. In FIG. 2, many electronic components mounted on the control circuit board and the like, through holes formed in the control circuit board, and the like are omitted for simplification of illustration. Moreover, the recessed part formed in a heat sink, the insertion hole for positioning pins, and the screw hole (all are mentioned later) were also abbreviate | omitted.
The PDU 22 includes a single control circuit board 40 including a MOTECU 30 and the like, a three-phase power module 42a, 42b, and 42c (that is, a three-phase inverter circuit module) connected to the control circuit board 40 and including an inverter circuit. Each of the three-phase power modules 42a, 42b, and 42c is arranged. In other words, the three-phase power modules 42a, 42b, and 42c are fixed, and the heat modules (heat dissipation) unitizing the power modules 42a, 42b, and 42c. Plate) 44a, 44b, 44c, a vehicle mounting case (case) 46 for accommodating in parallel a power module unit (unit) comprising the respective power modules 42a, 42b, 42c and the heat radiating plates 44a, 44b, 44c; Attach to mounting case 46 And a PDU case 48.
Next, details of each of the above-described elements will be described.
FIG. 3 is an enlarged exploded perspective view of the power module 42a and the heat sink 44a shown in FIG. 2, that is, the power module unit.
The power module 42a of the power module unit 50a includes an IGBT 52a that forms an inverter circuit, a gate drive substrate 54a that includes a gate drive circuit that drives the IGBT 52a, and a storage case 56a that stores the IGBT 52a and the gate drive substrate 54a. And an inverter circuit module constituting a phase. In FIG. 3, the electronic components and through holes mounted on the gate drive substrate 54a are omitted for simplification of illustration.
The housing case 56a includes a case portion 56a1 manufactured from a resin material. An opening 58a having a shape corresponding to the outer shape of the IGBT 52a is formed inside the case portion 56a1. Since the IGBT 52a is disposed in the opening as described later, the opening 58a is hereinafter referred to as “IGBT opening”.
The case portion 56a1 is provided with two input terminals 60a1 and 60a2 that are connected to the battery 24 and receive a direct current. Further, a bus bar 62a for outputting an alternating current converted by the IGBT 52a is provided at a portion opposite to the input terminals 60a1 and 60a2 of the case portion 56a1, more precisely at a portion opposite to the IGBT opening 58a. Are arranged so as to extend in the vertical direction.
A plurality of fitting portions 64 to be fitted with positioning protrusions formed on the vehicle mounting case 46 described later, specifically, in the longitudinal direction, are disposed at appropriate positions on the side surface (outer wall) of the case portion 56a1. A total of seven are formed, two on the outer wall, two near the bus bar 62a, and one near the input terminals 60a1 and 60a2 (three are not visible in FIG. 3). The fitting portion 64 is composed of a groove portion extending in the vertical direction in the figure, and its size (height, width, etc.) is substantially the same as that of the positioning projection portion of the vehicle mounting case 46, more precisely compared to the positioning projection portion. Slightly larger.
Further, insertion holes 68 into which screws 66 for fastening the housing case 56a and the heat sink 44a are to be inserted are formed in the vicinity of the four corners of the case portion 56a1 (not shown in two places in FIG. 3). Further, at an appropriate position on the bottom surface of the housing case 56a (the surface that contacts the upper surface 44a1 of the heat sink 44a), a convex portion (in FIG. 3) to be fitted with a concave portion 70 (described later) formed on the upper surface 44a1 of the heat sink 44a. A plurality (specifically, two) are formed.
The heat sink 44a of the power module unit 50a is made of a heat dissipating material, that is, a metal material having a relatively high thermal conductivity (more specifically, aluminum) and has a substantially rectangular parallelepiped shape. A plurality (specifically, four) of screw holes 72 into which the screws 66 are inserted are formed at appropriate positions on the upper surface 44a1 of the heat sink 44a. A plurality of screw holes 74 (specifically four) through which screws for fixing the vehicle mounting case 46 to the heat sink 44a described later are to be inserted are formed at appropriate positions, and these eight screw holes 72 are formed. , 74 are internally threaded.
Further, a plurality of, specifically two, recesses 70 to be fitted to the projections of the housing case 56a are formed on the upper surface 44a1 of the heat sink 44a. Further, in the vicinity of the lower portion of the heat sink 44a in FIG. 3, a large number of cooling fins 76 are integrally projected in a direction orthogonal to the arrow A in FIG.
The other power modules 42b and 42c and the heat sinks 44b and 44c, that is, the power module units 50b and 50c have the same configuration as the power module unit 50a, and thus the description thereof is omitted.
Next, the vehicle mounting case 46 will be described. 4 is an enlarged perspective view showing the vehicle mounting case 46, FIG. 5 is an enlarged plan view thereof, and FIG. 6 is a sectional view taken along line VI-VI in FIG.
The vehicle mounting case 46 is made of a heat dissipating material, that is, a metal material (more specifically, aluminum) having a relatively high thermal conductivity. The vehicle mounting case 46 includes a frame portion 78. Inside the frame portion 78, an opening having a shape corresponding to the outer shape of the power modules 42 a, 42 b, 42 c (more precisely, the housing cases 56 a, 56 b, 56 c). Three portions 80 are formed according to the number of power modules 42a, 42b, and 42c, that is, three portions are formed (in FIGS. 4 to 6, openings corresponding to the power modules 42a, 42b, and 42c are formed as 80a, 80b, 80c). Since the power modules 42a, 42b, and 42c are disposed in the openings 80a, 80b, and 80c as described later, the openings 80a, 80b, and 80c are hereinafter referred to as “power module openings”.
Further, insertion holes 82 through which screws for fixing the vehicle mounting case 46 to the respective heat sinks 44a, 44b, 44c are inserted at appropriate positions on the outer edges of the power module openings 80a, 80b, 80c, respectively. A total of 12 holes are formed by four (four not shown in FIG. 4). Further, near the upper portion of the frame portion 78 (surface facing the PDU case 48), a plurality of screw holes 84 into which screws for fixing the PDU case 48 to the vehicle mounting case 46 are to be inserted are specifically described. 7 are formed, and female screws are respectively screwed into the seven screw holes 84.
The upper end 781 of the frame portion 781 is continuously formed to be horizontal, and at the position where the connector mounted on the control circuit board 40 is to be disposed, step portions 88 and 90 (hereinafter referred to as “connector steps”). Part)).
On the other hand, the lower end 782 of the frame portion 78 is also continuously formed so as to be horizontal, but on the side as viewed from the arrow A in FIG. 4, a high distance of a predetermined distance (indicated by “d1” in FIG. 4). A stepped portion 92 having a thickness is formed over the entire side surface. Since the cooling fins 76 are exposed in the stepped portion 92 as will be described later, the stepped portion 92 is hereinafter referred to as a “stepped portion for cooling fin”.
Further, vehicle mounting portions 94 are formed in the vicinity of the four corners of the lower end 782 of the frame portion 78 so as to protrude in the horizontal direction from the side surface of the frame portion 78 (one is not shown in FIG. 4). The vehicle attachment portion 94 is provided with an insertion hole 96 into which a screw for fixing the vehicle attachment case 46 to a vehicle (not shown) is to be inserted.
Further, the inner wall of the vehicle mounting case 46, more precisely, the inner wall of each of the power module openings 80a, 80b, 80c has a plurality of the above-described positioning projections 98, specifically, the inner walls in the longitudinal direction . A total of seven are formed, two on the wall, two near the position where the bus bar 62 of the power module is to be disposed, and one near the position where the input terminal 60 of the power module is to be disposed. As shown in FIGS. 4 and 5, the positioning protrusion 98 has a substantially rectangular parallelepiped shape, and its height (vertical direction in the figure) is the height of the inner wall of each power module opening 80 a, 80 b, 80 c. (Shown as “d2” in FIG. 6). The width and thickness of the positioning protrusion 98 are appropriately set according to the size of the power module unit 50 and the like.
Next, the control circuit board 40 will be described with reference to FIG. On the control circuit board 40, the number of current sensors 26 corresponding to the power modules 42a, 42b, 42c, that is, three is mounted (the current sensors 26a, 42b, 42c corresponding to the power modules 42a, 42b, 42c in FIG. , 26b, 26c). Each of the current sensors 26a, 26b, and 26c includes a substantially C-shaped magnetic core having a gap, and a magnetoelectric conversion element such as a Hall element that is inserted in the gap (none of which is covered with a cover). At the same time, the magnetoelectric transducer is connected to the control circuit board 40 via lead pins (not shown).
The current sensors 26a, 26b, and 26c configured as described above measure (detect) the output current flowing through the bus bars 62a, 62b, and 62c of the power modules 42a, 42b, and 42c. Specifically, the bus bars 62a, 62b, 62c are inserted through the centers of the magnetic cores of the current sensors 26a, 26b, 26c. When a current flows through the bus bars 62a, 62b, and 62c, in the current sensors 26a, 26b, and 26c, a magnetic field generated in the gap is converted into a voltage signal by the magnetoelectric conversion element, and the voltage signal is converted into a control circuit board. A signal corresponding to the output current of the bus bars 62a, 62b, and 62c is output by being amplified by an amplifier (amplifier) mounted on 40.
Further, the control circuit board 40 is mounted with connectors 100 and 102 that are connected to an external ECU, the motor 20, and the like.
The PDU case 48 is manufactured from a resin material, and a plurality of insertion holes 108 through which screws 106 for fixing the PDU case 48 to the vehicle mounting case 46 are inserted at appropriate positions on the outer edge thereof. Specifically, seven holes are drilled.
The assembly of the PDU 22 configured as described above will be described focusing on the power modules 42a, 42b, 42c and the heat sinks 44a, 44b, 44c, that is, the power module units 50a, 50b, 50c, which are the features of this embodiment.
First, as shown in FIG. 3, the IGBT 52a is fixed near the center of the upper surface 44a1 of the heat sink 44a constituting the power module unit 50a. Specifically, solder is applied to the upper surface 44a1 of the heat sink 44a, and a heat spreader (copper plate), a silicon agent, and an insulating substrate are laminated thereon. Then, solder is again applied to the upper surface of the insulating substrate, and the IGBT 52a is disposed and fixed thereon, but since it does not directly relate to the gist of the present application, illustration and detailed description thereof are omitted.
Next, the storage case 56a is fixed to the heat sink 44a. At this time, the convex portion of the bottom surface of the storage case 56a is fitted into the concave portion 70 of the upper surface 44a1 of the heat sink 44a, whereby the storage case 56a is positioned. Meanwhile, the IGBT 52a is disposed in the IGBT opening 58a. Thereafter, the screw 66 is inserted through the insertion hole 68 and the screw hole 72, and the housing case 56a is fastened and fixed to the heat sink 44a.
Next, the signal pins of the IGBT 52a are appropriately connected to the input terminals 60a1 and 60a2, the bus bar 62a, the through holes of the gate drive substrate 54a, and the like by soldering. In this way, the power module 42a is fixed to the heat sink 44a, and the power module unit 50a is completed. As described above, the power modules 42b and 42c and the heat sinks 44b and 44c have the same configuration as the power module 42a and the heat sink 44a, and thus the description thereof is omitted.
Therefore, in the present application, the power modules 42a, 42b, and 42c are arranged in units by disposing the heat sinks 44a, 44b, and 44c in the power modules 42a, 42b, and 42c, respectively.
Next, the completed power module units 50a, 50b, and 50c are arranged in parallel as shown in FIGS. 2 and 7, and the heat sinks 44a, 44b of the power module units 50a, 50b, and 50c are provided by the vehicle mounting case 46. , 44c so as to surround the periphery.
At this time, the positioning projections 98 of the vehicle mounting case 46 are fitted into the fitting parts 64 of the case parts 56a1, 56b1, and 56c1, thereby positioning the three-phase power modules 42a, 42b, and 42c. The power module openings 80a, 80b, and 80c are disposed. Specifically, since the size (width, etc.) of the fitting portion 64 is set to be substantially the same as the positioning projection portion 98, the power module units 50a, 50b, 50b, 56b1 provided with the case portions 56a1, 56b1, 56c1 50c is moved by being pressed from below in the drawing. Then, the power module units 50a, 50b, and 50c are moved to their intended positions, that is, pressed until the power modules 42a, 42b, and 42c are arranged at appropriate positions of the power module openings 80a, 80b, and 80c.
Further, in the state where the power module units 50a, 50b, and 50c are arranged at the intended positions, the positioning protrusion 98 of the vehicle mounting case 46 is sandwiched by the fitting portions 64 of the case portions 56a1, 56b1, and 56c1. Fixed. Accordingly, the power module units 50a, 50b, and 50c are fixed to the vehicle mounting case 46.
As shown in FIG. 7, the cooling fin 76 of the heat sink 44a or 44c is arranged at the position of the cooling fin step portion 92 of the vehicle mounting case 46, that is, the cooling fin 76 of the heat sink 44a or 44c is exposed. Arranged to be.
Thereafter, twelve screws 110 are inserted through the insertion hole 82 and the screw hole 74, respectively, and the vehicle mounting case 46 is fastened and fixed to the heat sinks 44a, 44b, and 44c. In this way, the power module units 50a, 50b, and 50c are integrally accommodated by the vehicle mounting case 46 so as to surround the power module units 50a, 50b, and 50c.
Continuing the description of the assembly of the PDU 22 with reference to FIG. 2, in the vehicle mounting case 46 in which the power module units 50a, 50b, and 50c are integrally accommodated, the signal pins of the power modules 42a, 42b, and 42c are The control circuit board 40 is inserted through through holes (both not shown) and connected by soldering or the like. In this state, the connectors 100 and 102 mounted on the control circuit board 40 are respectively disposed on the connector step portions 88 and 90 of the vehicle mounting case 46. Thereafter, the seven screws 106 are respectively inserted into the insertion holes 108 and the screw holes 84, whereby the PDU case 48 is fastened and fixed to the vehicle mounting case 46.
The PDU 22 completed as described above is attached to an appropriate position of a vehicle (not shown). Specifically, a plurality of screws (not shown) are respectively inserted into the insertion holes 96 of the vehicle attachment portion 94 of the vehicle attachment case 46 and attached by being fastened and fixed to the vehicle.
Thus, in the power drive unit of the first embodiment, a plurality of power modules, in particular three-phase power module 42a constituting each phase, 42b, to 42c, are disposed respectively, and each of The heat modules 44a, 44b, and 44c that unitize the power modules 42a, 42b, and 42c so as to be independent for each phase, and the power modules 42a, 42b, and 42c and the heat sinks 44a, 44b, so as to be independent for each configured phase . The vehicle mounting case 46 that accommodates the power module units 50a, 50b, and 50c formed of 44c in parallel and the cooling fin step portion 92 that is formed over the entire side surface of the vehicle mounting case 46 are provided. Step 92 for the heat sinks 44a, 44b, 44 To expose, the vehicle mounting case 46 is the power module unit 50a, 50b, enclose the periphery of 50c, was further formed on the inside of the vehicle for mounting the case 46, the power module unit 50a, 50b, 50c of A plurality of power module openings 80a, 80b, 80c in which the power modules 42a, 42b, 42c are disposed, positioning protrusions 98 formed on the inner walls of the power module openings 80a, 80b, 80c, and a power module unit 50a, 50b, 50c includes a fitting part 64 formed on the outer wall of the power modules 42a, 42b, 42c (more precisely, the housing cases 56a, 56b, 56c) to which the positioning projection 98 is to be fitted. That is, the power module and the heat sink Since the unit is unitized, the corresponding power module unit is fixed when a failure occurs in any of the three-phase power modules 42a, 42b, and 42c, while the power drive unit can be easily assembled. Only the screw 110 needs to be removed and then replaced with a new power module unit, so that the replacement work can be facilitated, and thus maintainability can be improved. The same applies when a design change occurs in the IGBTs 52a, 52b, and 52c that constitute the power modules 42a, 42b, and 42c. Furthermore, since the power module units 50a, 50b, and 50c have the same configuration as described above, they can be shared with other power module units. In addition, the power module units 50a, 50b, and 50c can be accurately accommodated at the intended positions in the vehicle mounting case 46 described above, and thus can be more easily assembled.
Further, since the vehicle mounting case 46 is made of a heat dissipating material, that is, a metal material (specifically, aluminum) having a relatively high thermal conductivity, in addition to the above-described effects, The heated power modules 42a, 42b, 42c and the like can be cooled (heat dissipated) via the vehicle mounting case 46. Further, since the vehicle attachment case 46 is attached to the vehicle, heat from the power modules 42a, 42b, 42c and the like can be released to the vehicle body via the vehicle attachment case 46.
Further, even when the power module units 50a, 50b, and 50c are integrally accommodated by the vehicle mounting case 46, the cooling fins 76 of the heat sink 44a or 44c are mounted on the vehicle mounting case as shown in FIG. The cooling fin step 92 is disposed at the position of the cooling fin step 92, that is, the cooling fin 76 of the heat sink 44 a or 44 c is exposed, and the cooling fin step 92 is orthogonal to the cooling fin 76. Therefore, it does not hinder the flow of air that passes while contacting the cooling fins 76, in other words, it does not hinder cooling by the cooling fins 76, that is, heat exchange, and thus generates heat during operation. Cooling (dissipating heat) the power modules 42a, 42b, 42c, etc. more effectively Can.
In the above description, the power modules 42a, 42b, and 42c constitute a three-phase inverter circuit module by the IGBTs 52a, 52b, and 52c and the gate drive circuits 54a, 54b, and 54c that drive the IGBT. The three-phase inverter circuit module may be configured only by the IGBT without including the gate drive circuit.
Moreover, although the battery which consists of a nickel metal hydride battery was mentioned as an example of an electrical storage apparatus, it is not restricted to it, The battery which consists of another battery may be sufficient, or a capacitor may be sufficient.
Further, although the power drive unit has been described by taking a hybrid vehicle as an example, the power drive unit according to the present invention can also be applied to an electric vehicle.
As described above, in the first embodiment of the present invention, in the power drive unit (PDU22) including at least the plurality of power modules (42a, 42b, 42c) constituting the phases, the power modules are arranged in the plurality of power modules, respectively. is, the heat radiating plate unitizing the power module to independently said for each configured phase (heat sink 44a, 44b, 44c) and the heat dissipation plate and the power module to independently said for each configured phase A case (vehicle mounting case 46) that accommodates units (power module units 50a, 50b, 50c) in parallel, and a step portion (92) formed over the entire side surface of the case, The case has the unit so that the stepped portion exposes the heat sink. Enclose the periphery of bets, is further formed on the inside of the case (46), a plurality of openings power module is placed in said unit (80a, 80b, 80c) and, formed on the inner wall of the opening The positioning projection (98) and the positioning projection (98) formed on the outer wall of the power module (42a, 42b, 42c) in the unit (50a, 50b, 50c) should be fitted. It comprised so that a joint part (64) might be provided .
The case (46) is made of a heat dissipating material.
22 Power Drive Unit (PDU)
42a, 42b, 42c Power module 44a, 44b, 44c Heat sink (heat sink)
46 Vehicle mounting case
50a, 50b, 50c Power module unit (unit)
64 Fitting part 98 Positioning projection part
Claims (2)
- In the power drive unit comprising at least a plurality of power modules constituting each phase, each of the plurality of power modules is disposed , and the heat radiating plate unitizing the power modules so as to be independent for each of the configured phases , A case that accommodates a unit composed of a power module and a heat sink in parallel so as to be independent for each configured phase, and a step portion formed over the entire side surface of the case; so as to expose the heat radiating plate, wherein the case enclose the periphery of the unit, it is further formed on the inside of the casing, and a plurality of openings power module of the unit is disposed on the inner wall of the opening A positioning projection formed on the outer wall of the power module in the unit; Been, power drive unit, characterized in that it comprises a said fitting portion to the positioning protrusion is fitted.
- Claim 1 Symbol mounting power drive unit, wherein the casing is fabricated from a possible heat dissipation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004262674A JP4313273B2 (en) | 2004-09-09 | 2004-09-09 | Power drive unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004262674A JP4313273B2 (en) | 2004-09-09 | 2004-09-09 | Power drive unit |
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| Publication Number | Publication Date |
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| JP2006081312A JP2006081312A (en) | 2006-03-23 |
| JP4313273B2 true JP4313273B2 (en) | 2009-08-12 |
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| JP2004262674A Expired - Fee Related JP4313273B2 (en) | 2004-09-09 | 2004-09-09 | Power drive unit |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101335171B1 (en) * | 2006-09-07 | 2013-11-29 | 가부시키가이샤 야스카와덴키 | Motor controller |
| JP2012028401A (en) * | 2010-07-20 | 2012-02-09 | Denso Corp | Semiconductor device |
| JP2012028398A (en) * | 2010-07-20 | 2012-02-09 | Denso Corp | Semiconductor device |
| JP2012028400A (en) * | 2010-07-20 | 2012-02-09 | Denso Corp | Semiconductor device |
| JP2012028399A (en) * | 2010-07-20 | 2012-02-09 | Denso Corp | Semiconductor device |
| JP5872223B2 (en) * | 2011-09-27 | 2016-03-01 | 株式会社ケーヒン | Semiconductor control device |
| JP5858800B2 (en) * | 2012-01-23 | 2016-02-10 | 住友重機械工業株式会社 | Power converter |
| WO2013145620A1 (en) * | 2012-03-28 | 2013-10-03 | 富士電機株式会社 | Semiconductor device |
| CN104160504B (en) | 2012-03-28 | 2017-05-17 | 富士电机株式会社 | Semiconductor device and method for manufacturing semiconductor device |
| EP2833405A4 (en) | 2012-03-28 | 2016-01-13 | Fuji Electric Co Ltd | Semiconductor device, and method for manufacturing semiconductor device |
| KR101459857B1 (en) | 2012-12-27 | 2014-11-07 | 현대자동차주식회사 | Heat sink one body type power module |
| CN103129409B (en) * | 2013-03-04 | 2015-10-21 | 南车株洲电力机车有限公司 | A kind of control setup of aerotrain |
| JP6171586B2 (en) | 2013-06-04 | 2017-08-02 | 富士電機株式会社 | Semiconductor device |
| CN111937289A (en) * | 2018-03-30 | 2020-11-13 | 日本电产株式会社 | Power conversion device |
| WO2020255558A1 (en) * | 2019-06-21 | 2020-12-24 | 株式会社ケーヒン | Power conversion device |
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2004
- 2004-09-09 JP JP2004262674A patent/JP4313273B2/en not_active Expired - Fee Related
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