JP2005094849A - Power conversion apparatus and automobile mounting the same thereon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power conversion apparatus capable of being disposed in a flat space. <P>SOLUTION: A capacitor 30 comprises electrode plates 31, 33 and an element part 32. The element part 32 is sandwiched between the electrode plate 31 and the electrode plate 33. The electrode plate 31 is composed of a flat plate 310 and terminals 311 and 312. The terminals 311 and 312 are integrally formed with the flat plate 310. The terminal 311 is provided at the opposing corner against the terminal 312. The electrode plate 33 is composed of a flat plate 330 and terminals 331 and 332. The terminals 331 and 332 are integrally formed on the flat plate 330. The terminal 331 is provided at a diagonal position with respect to the terminal 332. The terminals 311 and the 331 constitute an input terminal, while the terminals 312 and 332 constitute an output terminal. As a result, the input terminal is provided in the direction opposite to the output terminal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power conversion device, and more particularly to a power conversion device including a flat capacitor and an automobile equipped with the power conversion device.

  Recently, hybrid vehicles and electric vehicles have attracted a great deal of attention as environmentally friendly vehicles. Some hybrid vehicles have been put into practical use.

  This hybrid vehicle is a vehicle that uses a DC power source, an inverter, and a motor driven by the inverter as a power source in addition to a conventional engine. In other words, a power source is obtained by driving the engine, a DC voltage from a DC power source is converted into an AC voltage by an inverter, and a motor is rotated by the converted AC voltage to obtain a power source. An electric vehicle is a vehicle that uses a DC power source, an inverter, and a motor driven by the inverter as a power source.

  Such a hybrid vehicle and an electric vehicle are equipped with a capacitor for smoothing the DC voltage input to the inverter or driving the inverter stably even if the power consumption of the inverter fluctuates. The capacitor is connected between the DC power supply and the inverter.

  A technique for connecting a capacitor and an inverter is disclosed in Patent Document 1, for example. FIG. 30 is a cross-sectional view of a semiconductor element and a capacitor constituting the inverter in Patent Document 1. Referring to FIG. 30, semiconductor elements 409 and 410 constitute an inverter. The semiconductor element 409 is connected to the positive conductor 406 and the AC conductor 408, and the semiconductor element 410 is connected to the negative conductor 407 and the AC conductor 408. The positive side conductor 402 connects the positive side conductor 406 and the positive terminal of the DC smoothing capacitor 401. The negative conductor 403 connects the negative conductor 407 and the negative terminal of the DC smoothing capacitor 401. The connection unit 405 connects the negative electrode side conductor 403 and the negative electrode terminal of the DC smoothing capacitor 401. The connection portion 412 connects the positive conductor 402 and the positive conductor 406. The connection part 413 connects the negative electrode side conductor 403 and the negative side conductor 407. The DC smoothing capacitor 401 is disposed above the semiconductor elements 409 and 410.

  The DC smoothing capacitor 401 receives a DC voltage from the power supply side via the positive electrode side conductor 402 and the negative electrode side conductor 403, and receives the received DC voltage from the positive electrode side conductor 402, the connection portion 412, the positive side conductor 406, and the connection portion 405. , And supplied to the semiconductor elements 409 and 410 via the negative electrode side conductor 403, the connecting portion 413 and the negative side conductor 407.

  Semiconductor elements 409 and 410 convert the DC voltage received from DC smoothing capacitor 401 into an AC voltage, and supply the converted AC voltage to each phase of the motor via AC conductor 408.

As described above, the DC smoothing capacitor 401 has one input / output terminal, and is connected to the power supply side and the inverter side via the one input / output terminal.
JP 2000-69766 A Utility Model Registration No. 3060540

  However, in the conventional connection method, since the capacitor is connected to the power supply side and the inverter side via one input / output terminal, it is difficult to mount the inverter composed of the capacitor and the semiconductor element in a flat space. There is a problem.

  Accordingly, the present invention has been made to solve such a problem, and an object thereof is to provide a power conversion device that can be arranged in a flat space.

  Another object of the present invention is to provide an automobile equipped with a power conversion device that can be arranged in a flat space.

  According to this invention, a power converter device is provided with a drive device and a capacity device. The drive device drives the load. The capacity device is provided between the power source and the driving device. The capacitive device includes first and second electrode plates, a capacitive element, an input terminal, and an output terminal. The first electrode plate constitutes a positive electrode. The second electrode plate constitutes a negative electrode. The capacitive element is sandwiched between the first and second electrode plates. The input terminal and the output terminal are provided in a region from a first plane including the first flat plate portion of the first electrode plate to a second plane including the second flat plate portion of the second electrode plate, Connected to the first and second flat plate portions. The input terminal is provided in a direction different from the output terminal. The power source is connected to the input terminal. Further, the driving device is connected to the output terminal.

  Preferably, the first plane is substantially parallel to the second plane. The input terminal and the output terminal are provided substantially parallel to the first and second flat plate portions.

  Preferably, the input terminal is arranged in the direction of the power source. Further, the output terminal is arranged in the direction of the driving device.

  Preferably, each of the input terminal and the output terminal includes a terminal formed integrally with the first electrode plate and a terminal formed integrally with the second electrode plate.

  Preferably, the input terminal is provided in a direction opposite to the output terminal.

  Preferably, the driving device is disposed on the output terminal side in contact with the capacitor device.

  Preferably, the output terminal includes first and second output terminals. The drive device includes first and second drive circuits. The first drive circuit drives the first load. The second drive circuit drives the second load. The first drive circuit is connected to the first output terminal, and the second drive circuit is connected to the second output terminal. The first output terminal is provided in a direction substantially orthogonal to the input terminal, and the second output terminal is provided in a direction opposite to the first output terminal.

  Preferably, the first drive circuit is disposed on the first output terminal side in contact with the capacitor device. The second drive circuit is disposed on the second output terminal side in contact with the capacitor device.

  Preferably, the first and second loads are linearly arranged in a direction substantially parallel to a direction in which the capacitor device, the first drive circuit, and the second drive circuit are arranged. The first drive circuit is disposed on the first load, and the second drive circuit is disposed on the second load.

  Preferably, the first and second loads are linearly arranged in a direction substantially orthogonal to a direction in which the capacitor device, the first drive circuit, and the second drive circuit are arranged. The capacitive device, the first drive circuit, and the second drive circuit are disposed on the first and second loads. The first drive circuit includes a first load connection portion provided on the upper side of the first load. Further, the second drive circuit has a second load connection portion provided on the upper side of the second load.

  Preferably, the load is a motor generator. The drive device is an inverter that drives the motor generator.

  Preferably, the power source includes a battery and a voltage converter. The voltage converter performs voltage conversion between the battery and the capacity device.

  Moreover, according to this invention, a motor vehicle is a motor vehicle carrying the power converter device of any one of Claims 1-12.

  In the power conversion device according to the present invention, the capacitor device has an input terminal and an output terminal connected to the two flat plate portions of the two electrode plates, and the input terminal is arranged in a different direction from the output terminal. When the driving device is connected to the capacity device via the output terminal, the driving device is arranged beside the capacity device in the same plane as the capacity device. The power source is connected to the capacitor device from a direction different from that of the driving device.

  Therefore, according to this invention, a power converter device can be arrange | positioned in a flat space.

  In the power converter according to the present invention, the two flat plate portions of the two electrode plates are provided substantially parallel to each other. The input terminal and the output terminal are provided in the horizontal direction of the capacity device.

  Therefore, according to the present invention, the power converter can be easily arranged in a flat space.

  Furthermore, in the power conversion device according to the present invention, each of the power supply and the drive device is linearly connected to the capacity device.

  Therefore, according to this invention, it is easy to arrange | position a power converter device by flat space.

  Furthermore, in the power conversion device according to the present invention, the power source and the drive device are electrically connected directly to the two electrode plates, and power is input to and output from the capacitive device via the two power plates.

  Therefore, according to this invention, a power converter device can be arrange | positioned in a flat space, and the power loss in a power converter device can be minimized.

  Furthermore, in the power conversion device according to the present invention, the power source, the capacity device, and the drive device are arranged in a straight line.

  Therefore, according to this invention, it is easy to arrange | position a power converter device in a flat space.

  Furthermore, in the power conversion device according to the present invention, the drive device is disposed in contact with the side surface on the output terminal side of the capacitance device.

  Therefore, according to the present invention, the capacity device and the drive device can be arranged as a single device in a flat space.

  Furthermore, in the power conversion device according to the present invention, the power source, the first drive circuit, and the second drive circuit are connected to the capacitive device from three directions. Each of the first drive circuit, the capacitor device, and the second drive circuit is linearly arranged in the plane of the capacitor device.

  Therefore, according to this invention, even if the output terminal of a capacity | capacitance apparatus becomes plurality, a power converter device can be arrange | positioned in a flat space.

  Furthermore, in the power conversion device according to the present invention, the first and second drive circuits are arranged in contact with different side surfaces of the capacitor device. The first drive circuit, the capacitor device, and the second drive circuit are arranged linearly in the plane of the capacitor device.

  Therefore, according to the present invention, the first drive circuit, the capacitor device, and the second drive circuit can be arranged as one device in a flat space.

  Furthermore, in the power conversion device according to the present invention, in the power conversion device in which the first and second drive circuits are arranged on both sides of the capacitive device, the first drive circuit is located on the first load, and the second Are arranged so as to be located on the second load.

  Therefore, according to the present invention, the connection distance between the power converter arranged in a flat space and the two loads can be minimized.

  Furthermore, in the power conversion device according to the present invention, the capacitor device, the first drive circuit, and the second drive circuit are arranged in a direction substantially orthogonal to the arrangement direction of the first and second loads. The first and second loads are connected to the first and second drive circuits at the shortest distance, respectively.

  Therefore, according to the present invention, the power conversion device can be arranged in a flat space substantially orthogonal to the first and second loads.

  Furthermore, in the power conversion device according to the present invention, the load is a motor generator, and the drive device is an inverter that drives the motor generator.

  Therefore, according to this invention, the power converter device which consists of a capacity | capacitance apparatus and an inverter can be arrange | positioned in a flat space.

  Furthermore, in the power conversion device according to the present invention, the power source includes a battery and a voltage converter. The voltage converter performs voltage conversion between the battery and the capacity device.

  Therefore, according to the present invention, the power conversion device can be arranged in a flat space even when power supplies that output voltages having different voltage levels are connected to the capacitor device.

  Moreover, the motor vehicle by this invention mounts the power converter device of any one of Claims 1-12.

  Therefore, the power conversion device can be arranged in a flat space of the automobile.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

[Embodiment 1]
FIG. 1 is a schematic block diagram of a hybrid vehicle equipped with the power conversion device according to the first embodiment. Referring to FIG. 1, hybrid vehicle 100 includes a battery 10, a power conversion device 20, an MG-ECU (Motor Generator Electric Control Unit) 50, an HV-ECU (Hybrid Vehicle Electronic Control Unit) 60, and an engine 70. And front wheels 80L, 80R, rear wheels 90L, 90R, cable 110, and motor generator MG.

  The power conversion device 20 includes a capacitor 30 and an IPM (Intelligent Power Module) 40.

  Motor generator MG is arranged on the rear wheels 90L, 90R side. Capacitor 30 and IPM 40 are arranged above motor generator MG. Capacitor 30 is connected to IPM 40. Battery 10 is arranged near capacitor 30, IPM 40 and motor generator MG. The cable 110 connects the battery 10 to the input terminal 30 </ b> A of the capacitor 30. The engine 70 is disposed on the front wheels 80L and 80R side.

  The battery 10 supplies a DC voltage to the capacitor 30 via the cable 110. Capacitor 30 smoothes the DC voltage from battery 10 and supplies it to IPM 40. IPM 40 converts the DC voltage from capacitor 30 into an AC voltage in accordance with a control signal from MG-ECU 50 to drive motor generator MG. Motor generator MG drives rear wheels 90L and 90R.

  MG-ECU 50 is an IGBT (Insulated Gate Bipolar) included in IPM 40 based on a motor current flowing through each phase of motor generator MG, a sensor value indicating the rotational position of the rotor of motor generator MG, and a torque command value from HV-ECU 60. A control signal for controlling the driving of the transistor is generated, and the generated control signal is output to the IPM 40.

  HV-ECU 60 controls engine 70 and determines a torque command value for motor generator MG based on battery voltage Vb from battery 10, engine speed from engine 70, and accelerator opening, and the determination The torque command value is output to MG-ECU 50.

  The engine 70 is started at a predetermined rotational speed according to control from the HV-ECU 60, and drives the front wheels 80L and 80R.

  Thus, in hybrid vehicle 100, front wheels 80L and 80R are driven by engine 70, and rear wheels 90L and 90R are driven by motor generator MG.

  FIG. 2 is a cross-sectional view of the capacitor 30 shown in FIG. Referring to FIG. 2, capacitor 30 includes electrode plates 31 and 33 and element portion 32. The element unit 32 is sandwiched between two electrode plates 31 and 33. The electrode plate 31 includes a flat plate portion 310 (a portion in contact with the element portion 32) and terminals 311 and 312. The terminals 311 and 312 are provided in the same plane as the flat plate portion 310 and are formed integrally with the flat plate portion 310. The electrode plate 33 includes a flat plate portion 330 (a portion in contact with the element portion 32) and terminals 331 and 332. The terminals 331 and 332 are provided in the same plane as the flat plate portion 330 and are formed integrally with the flat plate portion 330.

  FIG. 3 is a plan view seen from the upper side of the capacitor 30 shown in FIG. Referring to FIG. 3, electrode plate 31 constitutes a negative electrode, and electrode plate 33 constitutes a positive electrode. The terminal 311 is formed at a diagonal position with respect to the terminal 312, and the terminal 331 is formed at a diagonal position with respect to the terminal 332. The terminal 311 and the terminal 331 constitute an input terminal 30A, and the terminal 312 and the terminal 332 constitute an output terminal 30B. The input terminal 30A is disposed in the opposite direction to the output terminal 30B.

  FIG. 4 is a more specific cross-sectional view of the capacitor 30 shown in FIG. Referring to FIG. 4, element portion 32 includes electrodes 321 to 32n (n is a natural number). The electrodes 321, 323,..., 32n-1 are arranged to face the electrodes 322, 324,.

  The electrodes 321, 323,..., 32 n−1 are connected to the electrode plate 31, and the electrodes 322, 324,. The electrodes 321, 323,..., 32n-1 are substantially orthogonal to the electrode plate 31. The electrodes 322, 324,..., 32 n are substantially orthogonal to the electrode plate 33.

  The electrodes 321 and 322 constitute one capacitive element, and the electrodes 323 and 324 constitute one capacitive element. Hereinafter, in the same manner, the electrodes 32n-1 and 32n constitute one capacitive element. Therefore, the capacitor 30 has a structure in which a plurality of capacitive elements are connected in parallel. The electrode plate 31 collects current from a plurality of electrodes 321, 323,..., 32n-1 (negative electrode) and functions as the negative electrode of the capacitor 30, and the electrode plate 33 includes a plurality of electrodes 322, 324. ,..., 32n (positive electrode) and the function as a positive electrode of the capacitor 30. As a result, the shape of the capacitor 30 can be made flat.

  The terminals 311 and 312 are formed in the plane of the flat plate portion 310 of the electrode plate 31, and the terminals 331 and 332 are formed in the plane of the flat plate portion 330 of the electrode plate 33.

  Thus, the capacitor 30 has an input terminal 30A (consisting of terminals 311 and 331) and an output terminal 30B (comprising terminals 312 and 332) formed in the plane of the flat plate portions of the electrode plates 31 and 33. The input terminal 30A is arranged in the opposite direction to the output terminal 30B.

  FIG. 5 is a plan view of capacitor 30 and IPM 40 shown in FIG. Referring to FIG. 5, capacitor 30 is connected to battery 10 by input terminal 30A (consisting of terminals 311 and 331 shown in FIGS. 3 and 4). Capacitor 30 is connected to IPM 30 by output terminal 30B (comprising terminals 312 and 332 shown in FIGS. 3 and 4). That is, the IPM 30 is disposed in contact with the capacitor 30 on the output terminal 30B side. Accordingly, the capacitor 30 has an input terminal 30A arranged in the direction of the battery 10 (power source) and an output terminal 30B arranged in the direction of the IPM 40 (driving device). The width W1 of the capacitor 30 is the same as the width W2 of the IPM 40. IPM 40 is connected to motor generator MG by load connection unit 40A.

  6 is a side view of the capacitor 30, the IPM 40, and the cooler 41 as seen from the direction A shown in FIG. Referring to FIG. 6, the thickness D1 of the capacitor 30 is the same as the thickness D2 of the IPM 40. The cooler 41 is disposed below the IPM 40. The cooler 41 receives cooling water from the radiator via the supply / discharge port 41A, and cools the IPM 40 with the received cooling water. As will be described later, the IPM 40 includes a plurality of semiconductor elements, and converts the DC voltage from the capacitor 30 into an AC voltage by turning on / off the plurality of semiconductor elements. Therefore, since the IPM 40 generates heat when a plurality of semiconductor elements are turned on / off, the cooler 41 cools the IPM 40.

  FIG. 7 is a side view of the capacitor 30 and the cooler 41 seen from the direction B shown in FIG. The cooler 41 is disposed below the capacitor 30. The load connecting portion 40A is connected to the IPM 40 disposed on the back side of the paper with respect to the capacitor 30.

  FIG. 8 is a plan view of the capacitor 30 and the cooler 41 as seen from the direction C shown in FIG. Referring to FIG. 8, cooler 41 is arranged on the left side of capacitor 30. The load connecting portion 40A is connected to the IPM 40 disposed on the back side of the paper with respect to the cooler 41.

  As described above, the capacitor 30 has the input terminal 30A formed in the direction of the battery 10 and the output terminal 30B formed in the direction of the IPM 40, and the input terminal 30A is provided on the opposite side of the output terminal 30B. It is done. The input terminal 30A and the output terminal 30B are provided in the same plane as the flat plate portions 310 and 330 of the electrode plates 31 and 33 of the capacitor 30. Therefore, the capacitor 30 can be connected to the IPM 40 by the output terminal 30B, and the capacitor 30 and the IPM 40 can be arranged in the lateral direction. Since capacitor 30 has the same width and thickness as IPM 40, power converter 20 (capacitor 30 and IPM 40) suitable for a flat space can be produced by adjusting the width and / or thickness.

  FIG. 9 is a circuit diagram of battery 10, capacitor 30 and IPM 40 shown in FIG.

  The capacitor 30 is connected to the battery 10 through an input terminal including terminals 311 and 331 and is connected to the IPM 40 through an output terminal including terminals 312 and 332.

  The IPM 40 includes a U-phase arm 21, a V-phase arm 22, and a W-phase arm 23 connected in parallel between a power supply line and an earth line.

  The U-phase arm 21 is composed of IGBTs 1 and 2 connected in series, the V-phase arm 22 is composed of IGBTs 3 and 4 connected in series, and the W-phase arm 23 is composed of IGBTs 5 and 6 connected in series. . Further, between the emitters and collectors of the respective IGBTs 1 to 6, diodes 11 to 16 for flowing a current from the emitter side to the collector side are respectively connected.

  An intermediate point of each phase arm is connected to each phase end of each phase coil of motor generator MG. That is, motor generator MG is a three-phase permanent magnet motor, and is configured such that one end of three coils of U, V, and W phases are connected in common to the middle point, and the other end of U-phase coil is IGBTs 1 and 2. The other end of the V-phase coil is connected to the intermediate point of the IGBTs 3 and 4, and the other end of the W-phase coil is connected to the intermediate point of the IGBTs 5 and 6, respectively.

  That is, IPM 40 is an inverter that drives motor generator MG.

  The battery 10 is formed of a secondary battery such as nickel metal hydride or lithium ion. The battery 10 supplies a DC voltage to the capacitor 30. Capacitor 30 receives the DC voltage from battery 10 from input terminals 311 and 331, smoothes the received DC voltage, and supplies it from output terminals 312 and 332 to IPM 40. IPM 40 converts the DC voltage received from capacitor 30 into an AC voltage by signal PWM from MG-ECU 50 to drive motor generator MG.

  Current sensor 34 detects motor current Iu flowing through the U-phase coil of motor generator MG and outputs the detected current to MG-ECU 50. Current sensor 35 detects motor current Iw flowing through the W-phase coil of motor generator MG and outputs it to MG-ECU 50. Resolver 36 detects a sensor value θ indicating the rotational position of the rotor of motor generator MG, and outputs the detected sensor value θ to MG-ECU 50.

  Based on motor currents Iu and Iw, sensor value θ, and torque command value TR from HV-ECU 60, MG-ECU 50 generates a signal PWM for driving and controlling IGBTs 1 to 6 and outputs it to IPM 40.

  MG-ECU 50 generates signal PWM by the following method. The MG-ECU 50 calculates the motor current Iv based on the motor currents Iu and Iw, and calculates the current values Id and Iq by converting the motor currents Iu, Iv and Iw into three-phase / two-phase based on the sensor value θ. . Further, MG-ECU 50 calculates current command values Id * and Iq * based on torque command value TR.

  Then, MG-ECU 50 calculates voltage operation amounts Vd and Vq so that current values Id and Iq become current command values Id * and Iq *, and calculates the calculated voltage operation amounts Vd and Vq by sensor value θ. The voltage manipulated variables Vu, Vv, and Vw are calculated by phase / three-phase conversion. Then, MG-ECU 50 generates signal PWM based on voltage manipulated variables Vu, Vv, and Vw.

  Thus, power conversion device 20 converts the DC voltage from battery 10 into an AC voltage, and drives motor generator MG so that motor generator MG outputs the torque specified by torque command value TR.

  Hybrid vehicle 100 is mounted with power conversion device 20 in a flat space, front wheels 80L and 80R are driven by engine 70, and rear wheels 90L and 90R are driven by motor generator MG.

  Power conversion device 20 according to the first embodiment may include a capacitor 300 shown in FIG. FIG. 10 is another plan view of the capacitor in the first embodiment.

  Referring to FIG. 10, capacitor 300 is the same as capacitor 30 except that electrode plate 33 of capacitor 30 is replaced by electrode plate 33 </ b> A. The electrode plate 33A is integrally formed with terminals 331A and 332A. The terminal 331A is provided at a diagonal position with respect to the terminal 332A.

  In the capacitor 300, the terminal 311 and the terminal 331A constitute an input terminal, and the terminal 312 and the terminal 332A constitute an output terminal.

  FIG. 11 is a side view of the capacitor 300 viewed from the direction D shown in FIG. Referring to FIG. 11, electrode plate 33A includes terminals 331A and 332A, a flat plate portion 333, and arms 334 and 335. Note that the terminal 331A is not illustrated in FIG. 11 because it is disposed on the back side of the terminal 311 in the drawing. The arm 334 is substantially orthogonal to the flat plate portion 333 and is provided along one side surface of the element portion 32. The arm 335 is substantially orthogonal to the flat plate portion 333 and is provided along the other side surface of the element portion 32. The terminal 331A (not shown) is formed at the tip of the arm 334 in the same plane as the flat plate portion 310 of the electrode plate 31. Further, the terminal 332 </ b> A is formed in the same plane as the flat plate portion 310 of the electrode plate 31 at the tip of the arm 335. That is, the terminals 331A and 332A are formed substantially parallel to the flat plate portion 333 of the electrode plate 33A.

  Thus, the capacitor 300 is characterized in that the terminals 311 and 312 of the electrode plate 31 and the terminals 331A and 332A of the electrode plate 33A are formed in the same plane as the flat plate portion 310 of the electrode plate 31. This feature makes it easy to connect the battery 10 and the IPM 40 to the input terminal (comprising terminals 311 and 331A) and the output terminal (comprising terminals 312 and 332A), respectively.

  Moreover, the power conversion device 20 according to the first embodiment may include a capacitor 301 shown in FIG. FIG. 12 is still another side view of the capacitor in the first embodiment.

  Referring to FIG. 12, capacitor 301 is the same as capacitor 30 except that electrode plate 33 of capacitor 30 is replaced with electrode plate 33B. The electrode plate 33B includes terminals 331B and 332B, a flat plate portion 336, and arms 337 and 338. The terminals 331B and 332B, the flat plate portion 336, and the arms 337 and 338 are integrally formed.

  The arm 337 is substantially orthogonal to the flat plate portion 336 and is provided along one side surface of the element portion 32. The arm 338 is substantially orthogonal to the flat plate portion 336 and is provided along the other side surface of the element portion 32.

  The terminal 331B is provided at the tip of the arm 337 in a plane between the flat plate portion 310 of the electrode plate 31 and the flat plate portion 336 of the electrode plate 33B. The terminal 332B is provided at the tip of the arm 338 in a plane between the flat plate portion 310 of the electrode plate 31 and the flat plate portion 336 of the electrode plate 33B. That is, the terminals 331B and 332B are formed substantially parallel to the flat plate portion 336 of the electrode plate 33B between the flat surface including the flat plate portion 310 of the electrode plate 31 and the flat surface including the flat plate portion 336 of the electrode plate 33B.

  In the capacitor 301, the terminal 311 and the terminal 331B constitute an input terminal, and the terminal 312 and the terminal 332B constitute an output terminal.

  In the capacitor 301, the electrode plate constituting the negative electrode may be constituted by the electrode plate 33B, and the electrode plate constituting the positive electrode may be constituted by the electrode plate 31.

  As described above, the capacitor 301 is formed such that one of the terminals of the electrode plate constituting the positive electrode and the terminal of the electrode plate constituting the negative electrode is formed in the same plane as the flat plate portion of the electrode plate, and the other terminal. Is formed in a plane between two flat plate portions of two electrode plates.

  Furthermore, power conversion device 20 according to the first embodiment may include a capacitor 302 shown in FIG. FIG. 13 is still another plan view of the capacitor in the first embodiment.

  Referring to FIG. 13, capacitor 302 is the same as capacitor 30 except that electrode plate 31 of capacitor 30 is replaced with electrode plate 31 </ b> A and electrode plate 33 is replaced with electrode plate 33 </ b> C.

  The electrode plate 31A is integrally formed with terminals 311A and 312A. The terminal 311A is provided at a diagonal position with respect to the terminal 312A. The electrode plate 33C is integrally formed with terminals 331C and 332C. The terminal 331C is provided at a diagonal position with respect to the terminal 332C.

  In the capacitor 302, the terminal 311A and the terminal 331C constitute an input terminal, and the terminal 312A and the terminal 332C constitute an output terminal.

  FIG. 14 is a side view of the capacitor 302 viewed from the direction E shown in FIG. Referring to FIG. 14, electrode plate 31A includes terminals 311A and 312A, a flat plate portion 313, and arms 314 and 315. The arm 314 is substantially orthogonal to the flat plate portion 313 and is provided along one side surface of the element portion 32. The arm 315 is substantially orthogonal to the flat plate portion 313 and is provided along the other side surface of the element portion 32. The terminal 311A is formed at the tip of the arm 314 in a plane between the flat plate portion 313 of the electrode plate 31A and the flat plate portion 339 of the electrode plate 33C. The terminal 312A is formed at the tip of the arm 315 in a plane between the flat plate portion 313 of the electrode plate 31A and the flat plate portion 339 of the electrode plate 33C. That is, the terminals 311A and 312A are formed substantially parallel to the flat plate portion 313 of the electrode plate 31A between the flat surface including the flat plate portion 313 of the electrode plate 31A and the flat surface including the flat plate portion 339 of the electrode plate 33C.

  The electrode plate 33C includes terminals 331C and 332C, a flat plate portion 339, and arms 340 and 341. The arm 340 is substantially orthogonal to the flat plate portion 339 and is provided along one side surface of the element portion 32. The arm 341 is substantially orthogonal to the flat plate portion 339 and is provided along the other side surface of the element portion 32. The terminal 331C is formed at the tip of the arm 340 in a plane between the flat plate portion 313 of the electrode plate 31A and the flat plate portion 339 of the electrode plate 33C. The terminal 332C is formed at the tip of the arm 341 in a plane between the flat plate portion 313 of the electrode plate 31A and the flat plate portion 339 of the electrode plate 33C. That is, the terminals 331C and 332C are formed substantially parallel to the flat plate portion 339 of the electrode plate 33C between the flat surface including the flat plate portion 313 of the electrode plate 31A and the flat surface including the flat plate portion 339 of the electrode plate 33C.

  In the capacitor 302, the terminals 311A and 312A may be formed in the same plane as the terminals 331C and 332C, respectively.

  As described above, the capacitor 302 is characterized in that the terminal of the electrode plate constituting the positive electrode and the terminal of the electrode plate constituting the negative electrode are formed in the plane between the two flat plate portions of the two electrode plates. .

  In the above description, the various capacitors 30, 300, 301, and 302 have been described as the capacitors in the first embodiment. However, the capacitors in the first embodiment are input terminals and output terminals formed integrally with two electrode plates. The input terminal and the output terminal may be provided substantially in parallel with the flat plate portions of the two electrode plates in a region from the plane including one electrode plate to the plane including the other electrode plate.

  In addition, in the capacitors 30, 300, 301, and 302, it has been described that the output terminal is provided in the direction opposite to the input terminal. However, in the present invention, the output terminal is substantially the same as the direction of the input terminal. You may provide in the orthogonal direction.

  Furthermore, generally, in the capacitors 30, 300, 301, and 302, the output terminal may be provided in a direction different from the direction of the input terminal. However, it is necessary that the input terminal is provided in the arrangement direction of the battery 10 and the output terminal is provided in the arrangement direction of the IPM 40.

  As described above, capacitors 30, 300, 301, and 302 in the first embodiment have an input terminal and an output terminal formed integrally with two electrode plates, and the input terminal and the output terminal are one electrode plate. Is provided in a region from the plane including the other electrode plate to the plane including the other electrode plate substantially parallel to the flat plate portions of the two electrode plates, so that the capacitors 30, 300, 301, 302 and the IPM 40 can be connected in the lateral direction. , 300, 301, 302 and the thickness and width of the IPM 40, the power conversion device 20 that can be installed in a flat space can be easily manufactured.

  As a result, the power conversion device 20 including the capacitors 30, 300, 301, 302 and the IPM 40 can be easily installed in the flat space of the hybrid vehicle 100.

  The capacitors 30, 300, 301, and 302 constitute a “capacitance device”, the element unit 32 constitutes a “capacitance element”, and the IPM 40 constitutes a “drive device”.

[Embodiment 2]
FIG. 15 is a schematic block diagram of a hybrid vehicle equipped with the power conversion device according to the second embodiment. Referring to FIG. 15, hybrid vehicle 100A replaces power conversion device 20 of hybrid vehicle 100 with power conversion device 200, replaces motor generator MG with motor generators MG1 and MG2, replaces cable 110 with cable 130, and divides power. The mechanism 120 is added, and the rest is the same as the hybrid vehicle 100.

  Motor generator MG1, power split device 120, and motor generator MG2 are arranged linearly in the width direction of hybrid vehicle 100A. Motor generator MG1 is coupled to engine 70. Power split device 120 is arranged between motor generator MG1 and motor generator MG2, and is coupled to motor generator MG1, motor generator MG2 and engine 70. Motor generator MG2 is connected to front wheels 80L and 80R.

  Power conversion device 200 is arranged above motor generators MG1, MG2 and power split device 120. Power conversion device 200 includes a capacitor 210 and IPMs 220 and 230. Capacitor 210 and IPMs 220 and 230 are linearly arranged in a direction substantially parallel to the direction in which motor generator MG1, power split device 120 and motor generator MG2 are linearly arranged.

  Capacitor 210 is disposed between IPM 220 and IPM 230 and coupled to IPMs 220 and 230. Capacitor 210 is connected to battery 10 by cable 130.

  In hybrid vehicle 100A, HV-ECU 60 determines torque command values for motor generators MG1, MG2 in accordance with the traveling state of hybrid vehicle 100A, and outputs the determined torque command values to MG-ECU 50. MG-ECU 50 controls driving of motor generator MG1 based on a torque command value from HV-ECU 60, a motor current of motor generator MG1 and a sensor value indicating the rotational position of the rotor of motor generator MG1, and HV-ECU 60. The motor generator MG2 is driven and controlled based on the torque command value from the motor, the motor current of the motor generator MG2, and the sensor value indicating the rotational position of the rotor of the motor generator MG2.

  Motor generator MG <b> 1 is driven by IPM 220 to start or start engine 70 and to generate electric power by the rotational force of engine 70. Power split device 120 transmits power from engine 70 to front wheels 80L and 80R, or splits power from engine 70 to motor generator MG1 and front wheels 80L and 80R. Motor generator MG2 is driven by IPM 230 to drive front wheels 80L and 80R, and generates electric power by the rotational force of front wheels 80L and 80R.

  Capacitor 210 smoothes the DC voltage from battery 10 and supplies it to IPMs 220 and 230. IPM 220 drives motor generator MG1 in accordance with control from MG-ECU 50 and converts the AC voltage generated by motor generator MG1 into a DC voltage to charge battery 10. IPM 230 drives motor generator MG2 in accordance with control from MG-ECU 50 and converts the AC voltage generated by motor generator MG2 into a DC voltage to charge battery 10.

  16 is a plan view of capacitor 210 shown in FIG. Referring to FIG. 16, capacitor 210 is the same as capacitor 30 except that electrode plates 31 and 33 of capacitor 30 are replaced with electrode plates 211 and 215, respectively.

  The electrode plate 211 constitutes a positive electrode, and the electrode plate 215 constitutes a negative electrode. In the electrode plate 211, terminals 212 to 214 are integrally formed. The terminal 213 is disposed in a direction substantially orthogonal to the terminal 212, and the terminal 214 is disposed in a direction opposite to the terminal 213 (that is, a direction substantially orthogonal to the terminal 212).

  The electrode plate 215 is integrally formed with terminals 216 to 218. The terminal 217 is disposed in a direction substantially orthogonal to the terminal 216, and the terminal 218 is disposed in a direction opposite to the terminal 217 (that is, a direction substantially orthogonal to the terminal 216).

  In the capacitor 210, the terminals 212 and 216 constitute an input terminal 210A, the terminals 213 and 217 constitute one output terminal 210B, and the terminals 214 and 218 constitute another output terminal 210C.

  An input terminal 210A composed of terminals 212 and 216 is provided in the direction in which the battery 10 is disposed, and an output terminal 210B composed of terminals 213 and 217 is disposed in the direction in which the IPM 220 is disposed, and an output composed of terminals 214 and 218. Terminal 210C is provided in the direction in which IPM 230 is arranged.

  Thus, the capacitor 210 has the input terminal 210A and the two output terminals 210B and 210C, and the input terminal 210A and the two output terminals 210B and 210C are provided in different directions, respectively. The input terminal 210A is provided in the arrangement direction of the battery 10 (power source), and the two output terminals 210B and 210C are provided in the arrangement direction of the corresponding driving device (IPM 220 or 230), respectively.

  FIG. 17 is a side view of the capacitor 210 viewed from the direction F shown in FIG. Referring to FIG. 17, element portion 32 is sandwiched between electrode plates 211 and 215. The terminals 212 and 214 (and 213) are formed in the plane of the electrode plate 211, and the terminals 216 and 218 (and 217) are formed in the plane of the electrode plate 215.

  FIG. 18 is a plan view of the two electrode plates 211 and 215 shown in FIGS. 16 and 17. The electrode plate 211 has a planar shape symmetrical to the electrode plate 215 with respect to the line LN. As a result, as shown in FIG. 16, each of the input terminal and the two output terminals can be constituted by two terminals 212, 216; 213, 217; 214, 218 that are spatially displaced.

  FIG. 19 is a plan view of the capacitor 210 and the two IPMs 220 and 230 shown in FIG. Referring to FIG. 19, capacitor 210 is connected to battery 10 through input terminal 210 </ b> A (consisting of terminals 212 and 216 shown in FIG. 16).

  Capacitor 210 is connected to IPM 220 through output terminal 210B (comprising terminals 213 and 217 shown in FIG. 16), and is connected to IPM 230 through output terminal 210C (comprising terminals 214 and 218 shown in FIG. 16). That is, the IPM 220 is disposed in contact with the capacitor 210 on the output terminal 210B side, and the IPM 230 is disposed in contact with the capacitor 210 on the output terminal 210C side.

  Further, IPM 220 is connected to motor generator MG1 by load connection unit 220A, and IPM 230 is connected to motor generator MG2 by load connection unit 230A.

  Thus, the capacitor 210 has the input terminal 210A provided in the arrangement direction of the battery 10, the output terminal 210B provided in the arrangement direction of the IPM 220, and the output terminal 210C provided in the arrangement direction of the IPM 230. The input terminal 210A and the output terminals 210B and 210C are provided in different directions.

  As a result, the power conversion device 200 can be configured by the capacitor 210 and the two IPMs 220 and 230 arranged in a straight line, and the power conversion device 200 can be arranged in a flat space.

  FIG. 20 is a side view of the power conversion device 200 viewed from the G direction shown in FIG. Referring to FIG. 20, cooler 41 is disposed below IPM 230. In power conversion device 200, cooler 41 is also arranged below condenser 210 and IPM 220, and the cooling water received by condenser 210 and IPM 220, 230 from a radiator (not shown) via supply / exhaust port 41 </ b> A. Cool with water.

  Note that the input terminal 210 </ b> A is connected to the capacitor 210 disposed on the back side of the IPM 230 in the drawing.

  FIG. 21 is a circuit diagram of battery 10, capacitor 210, and two IPMs 220 and 230 shown in FIG. Referring to FIG. 21, capacitor 210 is connected to battery 10 through terminals 212 and 216, connected to IPM 220 through terminals 213 and 217, and connected to IPM 230 through terminals 214 and 218.

  Each of the IPMs 220 and 230 has the same configuration as the IPM 40. Then, the intermediate point of each phase arm of IPM 220 is connected to each phase end of each phase coil of motor generator MG1, and the intermediate point of each phase arm of IPM 230 is connected to each phase end of each phase coil of motor generator MG2. Has been.

  That is, IPMs 220 and 230 are inverters that drive motor generators MG1 and MG2, respectively.

  The battery 10 supplies a DC voltage to the capacitor 210. Capacitor 210 receives the DC voltage from battery 10 from terminals 212 and 216, and smoothes the received DC voltage. Capacitor 210 supplies the smoothed DC voltage to IPMs 220 and 230 via terminals 213, 217 and 214, 218. IPM 220 converts the DC voltage received from capacitor 210 into an AC voltage by signal PWM1 from MG-ECU 50 to drive motor generator MG1. IPM 230 converts the DC voltage received from capacitor 210 into an AC voltage by signal PWM2 from MG-ECU 50 to drive motor generator MG2.

  Current sensor 34A detects motor current Iu1 flowing through the U-phase coil of motor generator MG1, and outputs the detected current to MG-ECU 50. Current sensor 35A detects motor current Iw1 flowing through the W-phase coil of motor generator MG1, and outputs the detected motor current to MG-ECU 50. Resolver 36A detects a sensor value θ1 indicating the rotational position of the rotor of motor generator MG1, and outputs the detected sensor value θ1 to MG-ECU 50.

  Current sensor 34B detects motor current Iu2 flowing through the U-phase coil of motor generator MG2, and outputs the detected current to MG-ECU 50. Current sensor 35B detects motor current Iw2 flowing through the W-phase coil of motor generator MG2, and outputs the detected current to MG-ECU 50. Resolver 36B detects a sensor value θ2 indicating the rotational position of the rotor of motor generator MG2, and outputs the detected sensor value θ2 to MG-ECU 50.

  MG-ECU 50 generates signal PWM1 for driving and controlling IGBTs 1-6 of IPM 220 based on motor currents Iu1, Iw1, sensor value θ1, and torque command value TR1 from HV-ECU 60 by the method described above. Output to IPM 220.

  Further, MG-ECU 50 generates signal PWM2 for driving and controlling IGBTs 1-6 of IPM 230 based on motor currents Iu2, Iw2, sensor value θ2, and torque command value TR2 from HV-ECU 60 by the method described above. And output to the IPM 230.

  Thus, power conversion device 200 converts the DC voltage from battery 10 into an AC voltage, and motor generators MG1, MG2 output motor generators MG1, MG2 with the torques specified by torque command values TR1, TR2. Drive.

  FIG. 22 is a schematic cross-sectional view of engine 70, two motor generators MG1, MG2 and power split mechanism 120 shown in FIG. Referring to FIG. 22, a crankshaft (not shown) of engine 70 is connected to planetary gear (power split mechanism) 120 and motor generators MG1, MG2.

  The power take-out gear 428 is connected to the speed reducer 431 via the chain belt 429. The power take-out gear 428 receives power from a ring gear (not shown) of the planetary gear 120 and transmits the received power to the speed reducer 431 via the chain belt 429.

  The planetary gear 120 includes a sun gear 421 coupled to a hollow sun gear shaft 425 that passes through the center of the carrier shaft 427, a ring gear 422 coupled to a ring gear shaft 426 coaxial with the carrier shaft 427, and a sun gear 421. A plurality of planetary pinion gears 423 that are arranged between the ring gear 422 and revolve while rotating on the outer periphery of the sun gear 421, are coupled to the ends of the carrier shaft 427, and support the rotation shaft of each planetary pinion gear 423. And a planetary carrier 424.

  In this planetary gear 120, the sun gear 421, the ring gear 422, and the sun gear shaft 425 coupled to the planetary carrier 424, the ring gear shaft 426, and the carrier shaft 427, respectively, serve as power input / output shafts, and any one of the three shafts. When the power input / output to / from the two axes is determined, the power input / output to the remaining one axis is determined based on the determined power input / output to the two axes.

  A power take-out gear 428 for taking out power is coupled to the ring gear 422. The power take-out gear 428 is connected to the speed reducer 431 by a chain belt 429, and power is transmitted between the power take-out gear 428 and the speed reducer 431.

  Motor generators MG1 and MG2 are configured as generator motors.

  Rotor 140 of motor generator MG1 is coupled to sun gear shaft 425 coupled to sun gear 421 of planetary gear 120. Stator 150 is fixed to case 190. The motor generator MG1 operates as a generator that generates electromotive force at both ends of the coil 151 by the interaction between the magnetic field generated by the permanent magnet 141 and the rotation of the rotor 140. Motor generator MG1 generates a predetermined torque when current flows through coil 151 by IPM 220, and transmits the generated torque to engine 70 via sun gear shaft 425, sun gear 421, planetary carrier 424, and carrier shaft 427. Then, it operates as an electric motor that drives the engine 70.

  The rotor 140 of the motor generator MG2 is coupled to a ring gear shaft 426 coupled to the ring gear 422 of the planetary gear 120, and the stator 150 is fixed to the case 190. This motor generator MG2 operates as an electric motor that rotates and drives the rotor 140 by the interaction between the magnetic field generated by the permanent magnet 141 and the magnetic field formed by the coil 151, and the interaction between the magnetic field generated by the permanent magnet 141 and the rotation of the rotor 140. Therefore, it operates as a generator that generates electromotive force at both ends of the coil 151.

  Hybrid vehicle 100A has power conversion device 200 mounted in a flat space, motor generator MG1 is driven by IPM 220 to start or start engine 70, and motor generator MG2 is driven by IPM 230. The engine 70 and / or the motor generator MG2 drive the front wheels 80L and 80R to travel. Hybrid vehicle 100A uses motor generators MG1 and MG2 as generators, generates electric power by the rotational force of engine 70 and the rotational force of front wheels 80L and 80R, and charges battery 10.

  Capacitor 210 in the second embodiment can be changed in the same manner as capacitor 30 in the first embodiment is changed to capacitors 300, 301, and 302 shown in FIGS.

  Therefore, the capacitor in the second embodiment has an input terminal and two output terminals formed integrally with the two electrode plates, and the input terminal and the two output terminals are substantially parallel to the flat plate portion of the electrode plate. What is necessary is just to be provided in.

  In the capacitor 210, the output terminal 210C is described as being provided in the direction opposite to the output terminal 210B. However, in the present invention, the output terminal 210C is not limited to this and is provided in the direction opposite to the input terminal 210A. It may be.

  Furthermore, in general, in the capacitor 210, the input terminal and the two output terminals may be provided in different directions. However, it is necessary that the input terminal is provided in the arrangement direction of the battery 10 and the two output terminals are provided in the arrangement direction of the IPMs 220 and 230, respectively.

  As described above, capacitor 210 in the second embodiment has an input terminal and two output terminals integrally formed with two electrode plates, and the input terminal and the two output terminals are connected to the plate portion of the electrode plate. Since it is provided in a substantially parallel plane, the capacitor 210 and the two IPMs 220 and 230 can be connected laterally, and can be installed in a flat space by adjusting the thickness and width of the capacitor 210 and the two IPMs 220 and 230. A simple power conversion device 200 can be easily manufactured.

  As a result, the power conversion device 200 including the capacitor 210 and the two IPMs 220 and 230 can be easily installed in the flat space of the hybrid vehicle 100A.

  The capacitor 210 constitutes a “capacitance device”.

  The output terminal 210B (terminals 213 and 217) constitutes a “first output terminal”, and the output terminal 210C (terminals 214 and 218) constitutes a “second output terminal”.

  Further, the IPMs 220 and 230 constitute a “drive device”.

  Further, the IPM 220 constitutes a “first drive circuit”, and the IPM 230 constitutes a “second drive circuit”.

  Others are the same as in the first embodiment.

[Embodiment 3]
FIG. 23 is a schematic block diagram of a hybrid vehicle in the third embodiment. Referring to FIG. 23, hybrid vehicle 100B is obtained by replacing battery 10 of hybrid vehicle 100A with boosted power supply system 160 and adding CV-ECU 170, and is otherwise the same as hybrid vehicle 100A.

  The step-up power supply system 160 is disposed on the rear wheels 90L and 90R side, and is connected to the capacitor 210 of the power conversion device 200 by the cable 130. Booster power supply system 160 boosts a DC voltage from a battery (not shown) and supplies the boosted DC voltage to capacitor 210 via cable 130.

  CV-ECU 170 includes battery voltage Vb of the battery included in boost power supply system 160, voltage Vm across capacitor 210, torque command value TR1 (or TR2) from HV-ECU 60, and motor rotation speed MRN1 (or MRN2). Based on the above, the boost power supply system 160 controls to boost the DC voltage from the battery or to step down the DC voltage from the capacitor 210. Motor rotation speed MRN1 is the motor rotation speed of motor generator MG1, and MRN2 is the motor rotation speed of motor generator MG2.

  FIG. 24 is a circuit diagram of boosting power supply system 160, capacitor 210, and two IPMs 220 and 230 shown in FIG. The capacitor 210 and the two IPMs 220 and 230 are as described above.

  Referring to FIG. 24, boost power supply system 160 includes a battery 10 and a boost converter 180. Boost converter 180 includes a reactor 181, IGBTs 182 and 183, and diodes 184 and 185.

  Reactor 181 has one end connected to the power line of battery 10 and the other end connected to an intermediate point between IGBT 182 and IGBT 183. IGBTs 182 and 183 are connected in series between terminals 212 and 216 of capacitor 210. Diodes 184 and 185 are connected between the emitters and collectors of the IGBTs 182 and 183 so that current flows from the emitter side to the collector side, respectively.

  Boost converter 180 boosts the DC voltage from battery 10 according to signal PWU from CV-ECU 170 and supplies the boosted voltage to capacitor 210, or steps down the DC voltage from capacitor 210 to charge battery 10.

  Voltage sensor 17 detects battery voltage Vb of battery 10 and outputs it to CV-ECU 170. Voltage sensor 18 detects voltage Vm across capacitor 210 and outputs it to CV-ECU 170.

  CV-ECU 170 generates signal PWU for controlling boost converter 180 based on battery voltage Vb, voltage Vm, torque command values TR1 and TR2 and motor rotation speeds MRN1 and MRN2, and uses the generated signal PWU as boost converter 180. Output to.

  Thus, in Embodiment 3, voltage conversion device 200 drives and controls motor generators MG1 and MG2 with a DC voltage obtained by boosting battery voltage Vb output from battery 10.

  The rest is the same as in the first and second embodiments.

[Embodiment 4]
FIG. 25 is a schematic block diagram of a hybrid vehicle equipped with the power conversion device according to the fourth embodiment. Referring to FIG. 25, hybrid vehicle 100C is the same as hybrid vehicle 100B except that power conversion device 200 of hybrid vehicle 100B is replaced with power conversion device 250.

  In hybrid vehicle 100C, engine 70, motor generator MG1, power split mechanism 120, and motor generator MG2 are linearly arranged in a direction substantially parallel to the traveling direction of hybrid vehicle 100C. Engine 70 is connected to rear wheels 90L and 90R, and drives rear wheels 90L and 90R. Motor generator MG2 is connected to rear wheels 90L and 90R, and drives rear wheels 90L and 90R.

  Power conversion device 250 is arranged on motor generator MG1, power split device 120, and motor generator MG2. Power conversion device 250 includes a capacitor 260 and IPMs 270 and 280. Capacitor 260, IPM 270 and IPM 280 are linearly arranged in a direction substantially orthogonal to the arrangement direction of motor generator MG1, power split device 120 and motor generator MG2.

  Capacitor 260 is connected to boosted power supply system 160 by cable 130. Capacitor 260 is arranged between IPM 270 and IPM 280 and connected to IPM 270 and 280.

  IPM 270 is connected to motor generator MG1, and IPM 280 is connected to motor generator MG2.

  Capacitor 260 smoothes the DC voltage from boosted power supply system 160 and supplies it to IPMs 270 and 280. The IPMs 270 and 280 perform the same functions as the IPMs 220 and 230 described above, respectively.

  FIG. 26 is a plan view of capacitor 260 shown in FIG. Referring to FIG. 26, capacitor 260 is the same as capacitor 210 except that electrode plates 211 and 215 of capacitor 210 are replaced with electrode plates 261 and 265, respectively.

  The electrode plate 261 constitutes a positive electrode, and the electrode plate 265 constitutes a negative electrode. The electrode plate 261 is integrally formed with terminals 262 to 264. The terminal 263 is disposed in a direction substantially orthogonal to the terminal 262, and the terminal 264 is disposed in a direction opposite to the terminal 263 (that is, a direction substantially orthogonal to the terminal 262).

  The electrode plate 265 is integrally formed with terminals 266 to 268. The terminal 267 is arranged in a direction substantially orthogonal to the terminal 266, and the terminal 268 is arranged in a direction opposite to the terminal 267 (that is, a direction substantially orthogonal to the terminal 266).

  The electrode plates 261 and 265 have a length L1 longer than the electrode plates 211 and 215.

  Terminals 262 and 266 are provided in the direction in which boosting power supply system 160 is arranged, terminals 263 and 267 are provided in the direction in which IPM 280 is arranged, and terminals 264 and 268 are provided in the direction in which IPM 270 is arranged. .

  In capacitor 260, terminals 262 and 266 constitute input terminal 260A, terminals 263 and 267 constitute one output terminal 260C, and terminals 264 and 268 constitute another output terminal 260B. .

  As described above, the capacitor 260 has an input terminal and two output terminals, like the capacitor 210, and the input terminal and the two output terminals are provided in different directions.

  FIG. 27 is a side view of the capacitor 260 viewed from the H direction shown in FIG. Referring to FIG. 27, element portion 32 is sandwiched between electrode plates 261 and 265. The terminals 262, 264 (and 263) are formed in the same plane as the flat plate portion of the electrode plate 261, and the terminals 266, 268 (and 267) are formed in the same plane as the flat plate portion of the electrode plate 265.

  FIG. 28 is a plan view of the two electrode plates 261 and 265 shown in FIGS. 26 and 27. The electrode plate 261 has a plane shape symmetrical to the electrode plate 265 with respect to the line LN. As a result, as shown in FIG. 26, each of the input terminal and the two output terminals can be constituted by two terminals 262, 266; 263, 267; 264, 268 which are spatially displaced.

  The length L1 of the electrode plates 261 and 265 is determined according to the interval between the motor generator MG1 and the motor generator MG2. Since capacitor 260 is arranged on motor generator MG1 and motor generator MG2 as shown in FIG. 25, length L1 is determined in accordance with the interval between motor generator MG1 and motor generator MG2. It is.

  FIG. 29 is a plan view of capacitor 260 and two IPMs 270 and 280 shown in FIG. Referring to FIG. 29, capacitor 260 is connected to boosted power supply system 160 through input terminal 260A (consisting of terminals 262 and 266 shown in FIG. 26).

  Capacitor 260 is connected to IPM 270 by output terminal 260B (comprising terminals 264 and 268 shown in FIG. 26), and is connected to IPM 280 by output terminal 260C (comprising terminals 263 and 267 shown in FIG. 26). That is, the IPM 270 is disposed in contact with the capacitor 260 on the output terminal 260B side, and the IPM 280 is disposed in contact with the capacitor 260 on the output terminal 260C side.

  Further, IPM 270 is connected to motor generator MG1 by load connection unit 270A, and IPM 280 is connected to motor generator MG2 by load connection unit 280A. In this case, load connection portion 270A of IPM 270 and load connection portion 280A of IPM 280 are arranged at different positions in the direction of length L1 of capacitor 260. More specifically, load connection portion 270A is arranged to be located above motor generator MG1, and load connection portion 280A is arranged to be located above motor generator MG2.

  Thereby, the cable length for connecting load connecting portion 270A and motor generator MG1 and the cable length for connecting load connecting portion 280A and motor generator MG2 can be minimized. As a result, the power converter 250 can be arranged in a flat and small space.

  As described above, the capacitor 260 includes the input terminal 260A provided in the arrangement direction of the boost power supply system 160, the output terminal 260B provided in the arrangement direction of the IPM 270, and the output terminal 260C provided in the arrangement direction of the IPM 280. Have. The input terminal 260A and the output terminals 260B and 260C are provided in different directions.

  As a result, the power conversion device 250 can be configured by the capacitor 260 and the two IPMs 270 and 280 arranged in a straight line, and the power conversion device 250 can be arranged in a flat space.

  Hybrid vehicle 100C mounts power conversion device 250 in a flat space, drives motor generator MG1 by IPM 270 to start or start engine 70, and drives motor generator MG2 by IPM 280. The engine 70 is driven by driving the rear wheels 90L and 90R, and the motor generator MG2 drives the rear wheels 90L and 90R. Hybrid vehicle 100 </ b> C uses motor generators MG <b> 1 and MG <b> 2 as power generators, generates electric power by the rotational force of engine 70 and the rotational force of rear wheels 90 </ b> L and 90 </ b> R, and charges battery 10 of boosted power supply system 160.

  25 is a circuit diagram in which capacitor 210 and IPMs 220 and 230 shown in FIG. 24 are replaced with capacitor 260 and IPMs 270 and 280, respectively.

  Therefore, IPM 270 and 280 are inverters that drive motor generators MG1 and MG2, respectively.

  The capacitor 260 in the fourth embodiment can be changed in the same manner as the capacitor 30 in the first embodiment is changed to the capacitors 300, 301, and 302 shown in FIGS.

  Therefore, the capacitor according to the fourth embodiment has an input terminal and two output terminals integrally formed with two electrode plates, and the input terminal and the two output terminals are substantially parallel to the flat plate portion of the electrode plate. What is necessary is just to be provided in.

  As described above, capacitor 260 in the fourth embodiment has an input terminal and two output terminals integrally formed with two electrode plates, and the input terminal and the two output terminals are connected to the plate portion of the electrode plate. Since it is provided in a substantially parallel plane, the capacitor 260 and the two IPMs 270 and 280 can be connected laterally, and can be installed in a flat space by adjusting the thickness and width of the capacitor 260 and the two IPMs 270 and 280. A simple power converter 250 can be easily manufactured.

  As a result, the power conversion device 250 including the capacitor 260 and the two IPMs 270 and 280 can be easily installed in the flat space of the hybrid vehicle 100C.

  Capacitor 260, IPM 270 and IPM 280 constituting power conversion device 250 are arranged in a direction substantially perpendicular to the arrangement direction of motor generator MG1, power split mechanism 120 and motor generator MG2, and capacitor 260 and IPM 270 and 280 are arranged as motors. Since it is arranged on generator MG1 and motor generator MG2, the power of engine 70 is divided into the driving power of front wheels 80L and 80R and the power for power generation of motor generator MG1, and rear wheels 90L and 90R are driven by motor generator MG2. Thus, the power conversion device 250 suitable for the hybrid vehicle 100C can be manufactured.

  Capacitor 260 constitutes a “capacitance device”.

  The output terminal 260B (terminals 264 and 268) constitutes a “first output terminal”, and the output terminal 260C (terminals 263 and 267) constitutes a “second output terminal”.

  Further, the IPMs 270 and 280 constitute a “drive device”.

  Further, the IPM 270 constitutes a “first drive circuit”, and the IPM 280 constitutes a “second drive circuit”.

  Others are the same as in the second embodiment.

  In the above description, the input terminals and output terminals of the capacitors 30, 210, 260, 300, 301, 302 are integrated with the terminal formed integrally with the electrode plate constituting the positive electrode and the electrode plate constituting the negative electrode. In the present invention, the input terminal and the output terminal do not have to be formed integrally with the electrode plate, and are connected to the electrode plate constituting the positive electrode. And a terminal connected to the electrode plate constituting the negative electrode. However, the input terminal and the output terminal must be formed in a plane substantially parallel to the flat plate portion of the electrode plate.

  In the present invention, the two terminals constituting the input terminals 30A, 210A and 260A of the capacitors 30, 210, 260 and 300 to 302 and the two terminals constituting the output terminals 30B, 210B, 210C, 260B and 260C are , May be provided in different directions.

  Further, in the present invention, the two terminals constituting the input terminals 30A, 210A, 260A of the capacitors 30, 210, 260, 300 to 302 and the two terminals constituting the output terminals 30B, 210B, 210C, 260B, 260C are Further, it may have a shape other than a flat plate shape such as a round bar.

  Furthermore, in the present invention, the input terminals 30A, 210A, 260A and the output terminals 30B, 210B, 210C, 260B, 260C of the capacitors 30, 210, 260, 300 to 302 may be provided in different planes.

  Furthermore, in the present invention, the capacitive elements 32 of the capacitors 30, 210, 260, and 300 to 302 may be sandwiched between two non-parallel electrode plates.

  Furthermore, in the present invention, any one of the two terminals constituting the input terminals 30A, 210A, 260A of the capacitors 30, 210, 260, 300 to 302 and / or the output terminals 30B, 210B, 210C, 260B, 260C is provided. Any one of the two terminals to be configured may be provided substantially parallel to the flat plate portion of the electrode plate.

  Furthermore, in the above description, the hybrid vehicles 100, 100A, 100B, and 100C equipped with the power conversion devices 20, 200, and 250 have been described. However, the power conversion devices 20, 200, and 250 are mounted on an electric vehicle or a fuel cell vehicle. May be.

  Furthermore, in the first embodiment, engine 70 drives the front wheels, and motor generator MG drives the rear wheels. In the second and third embodiments, engine 70 and motor generator MG2 are configured to drive the front wheels. In the fourth embodiment, engine 70 and motor generator MG2 are configured to drive the rear wheels. However, the present invention is not limited to these configurations.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and is intended to include meanings equivalent to the scope of claims for patent and all modifications within the scope.

  The present invention is applied to a power conversion device that can be arranged in a flat space and an automobile equipped with the power conversion device that can be arranged in a flat space.

1 is a schematic block diagram of a hybrid vehicle equipped with a power conversion device according to Embodiment 1. FIG. It is sectional drawing of the capacitor | condenser shown in FIG. It is the top view seen from the upper side of the capacitor | condenser shown in FIG. FIG. 2 is a more specific cross-sectional view of the capacitor shown in FIG. 1. It is a top view of the capacitor | condenser and IPM which are shown in FIG. FIG. 6 is a side view of the capacitor, the IPM, and the cooler viewed from the direction A shown in FIG. 5. FIG. 7 is a side view of the condenser and the cooler viewed from the B direction shown in FIG. 6. FIG. 7 is a plan view of the condenser and the cooler viewed from the direction C shown in FIG. 6. FIG. 2 is a circuit diagram of the battery, capacitor, and IPM shown in FIG. 1. FIG. 10 is another plan view of the capacitor in the first embodiment. It is a side view of the capacitor | condenser seen from the D direction shown in FIG. FIG. 6 is still another side view of the capacitor in the first embodiment. FIG. 7 is still another plan view of the capacitor in the first embodiment. It is a side view of the capacitor | condenser seen from the E direction shown in FIG. FIG. 4 is a schematic block diagram of a hybrid vehicle equipped with a power conversion device according to a second embodiment. FIG. 16 is a plan view of the capacitor shown in FIG. 15. It is a side view of the capacitor | condenser seen from the F direction shown in FIG. FIG. 18 is a plan view of two electrode plates shown in FIGS. 16 and 17. FIG. 16 is a plan view of the capacitor and two IPMs shown in FIG. 15. It is a side view of the power converter device seen from the G direction shown in FIG. FIG. 16 is a circuit diagram of the battery, capacitor, and two IPMs shown in FIG. 15. FIG. 16 is a schematic cross-sectional view of the engine, two motor generators, and a power split mechanism shown in FIG. 15. FIG. 6 is a schematic block diagram of a hybrid vehicle in a third embodiment. FIG. 24 is a circuit diagram of the boost power supply system, the capacitor, and two IPMs shown in FIG. 23. FIG. 10 is a schematic block diagram of a hybrid vehicle equipped with a power conversion device according to a fourth embodiment. FIG. 26 is a plan view of the capacitor shown in FIG. 25. FIG. 27 is a side view of the capacitor viewed from the H direction shown in FIG. 26. FIG. 28 is a plan view of two electrode plates shown in FIGS. 26 and 27. FIG. 26 is a plan view of the capacitor and two IPMs shown in FIG. 25. It is sectional drawing of the semiconductor element and capacitor which comprise the inverter in patent document 1. FIG.

Explanation of symbols

  1 to 6, 182, 183 IGBT, 10 battery, 11 to 16, 184, 185 diode, 17, 18 voltage sensor, 20, 200, 250 power converter, 21 U-phase arm, 22 V-phase arm, 23 W-phase arm , 30, 210, 260, 300, 301, 302 capacitor, 30A, 210A, 260A input terminal, 30B, 210B, 210C, 260B, 260C output terminal, 31, 31A, 33, 33A, 33B, 33C, 211, 215, 261,265 electrode plate, 32 element section, 34, 34A, 34B, 35, 35A, 35B current sensor, 36, 36A, 36B resolver, 40, 220, 230, 270, 280 IPM, 40A, 220A, 230A, 270A, 280A load connection, 41 cooler, 41A supply Port, 212 to 214, 216 to 218, 262 to 264, 266 to 268, 311, 311A, 312, 312A, 331, 331A, 331B, 331C, 332, 332A, 332B, 332C terminal, 50 MG-ECU, 60 HV -ECU, 70 engine, 80L, 80R front wheel, 90L, 90R rear wheel, 100, 100A, 100B, 100C hybrid vehicle, 110, 130 cable, 120 power split mechanism, 140 rotor, 141 permanent magnet, 150 stator, 151 coil, 160 Boost Power Supply System, 170 CV-ECU, 180 Boost Converter, 181 Reactor, 190 Case, 310, 313, 330, 333, 336, 339 Flat Plate, 314, 315, 334, 335, 337, 338, 340 341 Arm, 321-32n electrode, 401 DC smoothing capacitor, 402 Positive side conductor, 403 Negative side conductor, 405, 412, 413 Connection part, 406 Positive side conductor, 407 Negative side conductor, 408 AC conductor, 409, 410 Semiconductor Element, 421 Sun gear, 422 Ring gear, 423 Planetary pinion gear, 424 Planetary carrier, 425 Sun gear shaft, 426 Ring gear shaft, 427 Carrier shaft, 428 Power take-off gear, 429 Chain belt, 431 Reducer, MG, MG1, MG2 Motor generator.

Claims (13)

A driving device for driving a load;
A capacity device provided between a power source and the driving device;
The capacity device is:
A first electrode plate constituting a positive electrode;
A second electrode plate constituting a negative electrode;
A capacitive element sandwiched between the first and second electrode plates;
Provided in a region from a first plane including the first flat plate portion of the first electrode plate to a second plane including the second flat plate portion of the second electrode plate; Including an input terminal and an output terminal connected to the flat plate portion of
The input terminal is provided in a direction different from the output terminal,
The power source is connected to the input terminal;
The drive device is a power conversion device connected to the output terminal. The first plane is substantially parallel to the second plane;
The power converter according to claim 1, wherein the input terminal and the output terminal are provided substantially parallel to the first and second flat plate portions. The input terminal is arranged in the direction of the power source,
The power converter according to claim 1 or 2, wherein the output terminal is disposed in a direction of the driving device.   Each of the said input terminal and the said output terminal consists of the terminal integrally formed in the said 1st electrode plate, and the terminal integrally formed in the said 2nd electrode plate. Item 4. The power conversion device according to any one of Items 3 above.   The power converter according to any one of claims 1 to 4, wherein the input terminal is provided in a direction opposite to the output terminal.   The power converter according to claim 5, wherein the driving device is disposed on the output terminal side in contact with the capacitive device. The output terminal comprises first and second output terminals,
The driving device includes:
A first drive circuit for driving a first load;
A second drive circuit for driving a second load,
The first driving circuit is connected to the first output terminal;
The second drive circuit is connected to the second output terminal;
The first output terminal is provided in a direction substantially orthogonal to the input terminal,
The power converter according to any one of claims 1 to 4, wherein the second output terminal is provided in a direction opposite to the first output terminal. The first drive circuit is disposed on the first output terminal side in contact with the capacitor device,
The power converter according to claim 7, wherein the second drive circuit is disposed on the second output terminal side in contact with the capacitor device. The first and second loads are linearly arranged in a direction substantially parallel to a direction in which the capacitor device, the first drive circuit, and the second drive circuit are arranged,
The first driving circuit is disposed on the first load;
The power converter according to claim 8, wherein the second drive circuit is disposed on the second load. The first and second loads are linearly arranged in a direction substantially orthogonal to a direction in which the capacitor device, the first drive circuit, and the second drive circuit are arranged,
The capacitive device, the first drive circuit, and the second drive circuit are disposed on the first and second loads,
The first drive circuit has a first load connection provided on the upper side of the first load,
The power converter according to claim 8, wherein the second drive circuit includes a second load connection unit provided on an upper side of the second load. The load is a motor generator,
The power conversion device according to claim 1, wherein the drive device is an inverter that drives the motor generator. The power supply is
Battery,
The power converter according to any one of claims 1 to 11, further comprising a voltage converter that performs voltage conversion between the battery and the capacity device.   The motor vehicle carrying the power converter device of any one of Claims 1-12.

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