JP5394957B2 - Capacitor device - Google Patents

Description

  The present invention relates to a capacitor device, and more particularly, to a capacitor device including a plurality of terminal blocks that connect a capacitor module to an external circuit device such as a power module.

  In recent years, hybrid vehicles including an internal combustion engine and an electric motor as driving force sources have been widely used. In such a hybrid vehicle, a power drive unit that converts DC power supplied from a battery into an AC power flow and supplies the AC power to the motor, and converts AC power generated by a regenerative operation of the motor into DC power and stores it in the battery. Is provided.

  The power drive unit typically includes a capacitor module that smoothes the direct current supplied from the battery, and a power module that converts the direct current smoothed by the capacitor module into an alternating current. In such a power drive unit, surging may occur when the power module converts a direct current supplied from the capacitor module into an alternating current by a switching operation.

  In order to suppress the occurrence of such surging, the capacitor module and the power module are electrically connected to each other via a panel-like bus bar having a large opposing area, and the inductance of the wiring between the capacitor module and the power module is determined. It has been proposed to reduce.

  Patent Document 1 relates to a stack structure of a power conversion device, in which capacitor modules 10a to 10d and power modules 11a, 11b, 12a, 12b, 13a, and 13b are T-shaped bus bars 17a in which a positive electrode and a negative electrode are laminated. , 17b is disclosed.

  Patent Document 2 relates to a control device for an electric vehicle, in which a capacitor module 3 and a power module 2 are electrically connected to each other via positive and negative laminated DC conductor plates 6 and 7 of a substantially crank-shaped panel that has been bent at least twice. Disclosed configuration is disclosed.

JP 2004-135444 A JP 2002-368191 A

  However, according to the study of the present inventors, in the configurations disclosed in Patent Document 1 and Patent Document 2, the capacitor module and the power module are connected via a panel-shaped bus bar having a large facing area. Although the inductance of the wiring between the power module and the power module can be reduced and the occurrence of surging can be suppressed, it is difficult to reduce the size of the device configuration.

That is, in such a configuration, since a panel-shaped bus bar having a large opposing area is used, it is necessary to construct the configuration of the power drive unit in consideration of the arrangement and wiring of the bus bar between the capacitor module and the power module. The power drive unit tends to be difficult to downsize.

  The present invention has been made after the above study, and provides a capacitor device including a plurality of terminal blocks for connecting a capacitor module to an external circuit device such as a power module so that the power drive unit can be miniaturized. For the purpose.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a capacitor module having a capacitor, and a positive electrode whose one end can be connected to an external circuit device and whose other end can be connected to a positive potential. A bus bar, a negative electrode bus bar whose one end side can be connected to the external circuit device and the other end side can be connected to a negative potential, and one end side can be connected to the external circuit device, and the other end side can be connected to a load. An output bus bar and a positive terminal block provided with a positive terminal to be connected to the external circuit device and connected to the end of the one end side of the positive bus bar are provided to be able to face the external circuit device. A negative terminal block provided with a negative terminal to which an end of the one end side of the negative electrode bus bar is connected, and is provided to face the external circuit device, and an end of the output bus bar is in contact with the one end side. A terminal block having an output terminal block on which the output terminal is disposed, wherein the positive electrode bus bar and the negative electrode terminal block are different in height dimension from the height dimension of the output terminal block. The negative electrode bus bar and the output bus bar are built in the capacitor module, and can be connected to the external circuit device via the positive electrode terminal, the negative electrode terminal, and the output terminal correspondingly. Device.

  Moreover, in addition to 1st aspect, this invention makes it 2nd aspect that the said positive electrode bus bar, the said negative electrode bus bar, and the said output bus bar are arranged three-dimensionally inside the said capacitor | condenser module.

  Further, according to the present invention, in addition to the first or second aspect, the capacitor module faces the external circuit device via the positive terminal block, the negative terminal block, and the output terminal block that are arranged close to each other. The third aspect is to be free.

  According to the fourth aspect of the present invention, in addition to any one of the first to third aspects, the positive terminal block, the negative terminal block, and the output terminal block are integrally formed with the capacitor module. Let's say that.

  In addition to any one of the first to fourth aspects, a fifth aspect of the present invention is that the capacitor module includes a current sensor for detecting the magnitude of the current flowing through the output bus bar.

  In addition to any one of the first to fifth aspects, the present invention has a sixth aspect in which the external circuit device is a power module that converts a direct current from the capacitor module into an alternating current. .

In the semiconductor device according to the first aspect of the present invention, a positive terminal block provided with a positive terminal that is provided so as to face an external circuit device and is connected to one end of the positive bus bar, and an external circuit device A negative terminal block provided with a negative terminal to which an end of one end of the negative bus bar is connected and an external circuit device, and an end on one end of the output bus bar A terminal block having an output terminal block provided with a connected output terminal, the height dimension of the positive terminal block and the negative terminal block is different from the height dimension of the output terminal block, the positive bus bar, the negative electrode The bus bar and the output bus bar are built in the capacitor module, and can be connected to the external circuit device via the positive terminal, the negative terminal, and the output terminal, so that the capacitor module and the power drive can be connected. With increased cabling flexibility of wiring, the power drive unit can be miniaturized.

  In the semiconductor device according to the second aspect of the present invention, the positive electrode bus bar, the negative electrode bus bar, and the output bus bar are three-dimensionally arranged inside the capacitor module, thereby reducing the clearance between the bus bars. It can be arranged in three dimensions, the degree of freedom of wiring arrangement between the capacitor module and the power drive can be further increased, and the power drive unit can be downsized.

  In the semiconductor device according to the third aspect of the present invention, the capacitor module can face the external circuit device via the positive terminal block, the negative terminal block, and the output terminal block that are arranged close to each other. And the power drive can be disposed close to each other via the terminal block, and the power drive unit can be reduced in size.

  In the semiconductor device according to the fourth aspect of the present invention, since the positive terminal block, the negative terminal block, and the output terminal block are integrally formed with the capacitor module, the capacitor module and the terminal block can be arranged close to each other. Thus, the power drive unit can be reduced in size.

  In the semiconductor device according to the fifth aspect of the present invention, the capacitor module can detect the magnitude of the current flowing through the output bus bar and can reduce the size of the power drive unit by incorporating the current sensor. .

  In the semiconductor device according to the sixth aspect of the present invention, since the external circuit device is a power module that converts the direct current from the capacitor module into an alternating current, typically the AC / DC conversion function can be realized, The power drive unit can be reduced in size.

It is a block diagram which shows the structure of the control relevant apparatus of the vehicle to which the capacitor | condenser apparatus in the 1st Embodiment of this invention is applied. It is a perspective view which shows the capacitor | condenser apparatus in this embodiment with a power module. It is a top view of the capacitor | condenser apparatus in this embodiment. It is a perspective view which shows transparently the internal structure of the capacitor | condenser apparatus in this embodiment. It is a perspective view which shows the capacitor | condenser apparatus in the 2nd Embodiment of this invention with a power module. It is a top view of the capacitor | condenser apparatus in this embodiment.

  Hereinafter, the capacitor device in each embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the figure, the x-axis, y-axis, and z-axis form a three-axis orthogonal coordinate system, where the x-axis direction is the longitudinal direction, the y-axis direction is the transverse direction, and the z-axis direction is the vertical direction. .

(First embodiment)
The capacitor device according to the first embodiment of the present invention will be described in detail with reference to FIGS.

First, the configuration of a vehicle control device to which the capacitor device according to the present embodiment is applied will be described in detail with reference to FIG. For the capacitor device in this embodiment,
The description will be given by taking the configuration applied to the power drive unit as an example.

  FIG. 1 is a block diagram showing a configuration of a vehicle control-related device to which the capacitor device according to the present embodiment is applied.

  As shown in FIG. 1, in this embodiment, a motor 10 mounted on a vehicle such as an automobile is connected to a battery 30 via a PDU (power drive unit) 20.

  The motor 10 is typically an AC synchronous motor such as a DC brushless motor that operates by being supplied with electric power such as three-phase AC. The motor 10 supplies a driving force for driving the vehicle when the vehicle uses only the motor 10 as a driving force source, while the vehicle mainly drives an engine such as an internal combustion engine (not shown). When used as a power source, it is used in an auxiliary / complementary manner together with the driving force of the engine, and it can function as a starter motor when the engine is started and a generator when the engine is operating as appropriate. It is. In any case, the motor 10 can function as an energy regeneration mechanism that uses inertial energy at the time of deceleration of the vehicle selectively.

  The battery 30 is typically a nickel metal hydride or lithium ion secondary battery, supplies power necessary for the motor 10 and other auxiliary machines, and regenerative power recovered via the motor 10 and the like. In addition, it is possible to store generated power from the motor 10 or a separately provided generator or the like not shown.

  The PDU 20 is a lower-level controller of the PCU (power control unit) 40 that comprehensively controls the motor 10 and the battery 30. When three-phase AC is used, the DC current from the battery 30 is stabilized to three-phase AC current. The DC / AC converter function for converting the electric current into the motor 10 and the AC / DC converter function for stably converting the regenerative alternating current from the motor 10 into the direct current and supplying it to the battery 30 are combined. The PDU 20 may have only the function of a DC / AC converter that stably converts a direct current from the battery 30 into an alternating current and supplies the alternating current to the motor 10 as necessary.

  When the main driving force source of the vehicle is a fuel cell (not shown), the battery 30 supplies necessary power to the auxiliary machine and stores surplus power, regenerative power, etc. of the fuel cell. Is possible. In such a case, the PDU 20 serves as a lower controller of the PCU 40 that comprehensively controls the motor 10, the battery 30, and the fuel cell, and mainly converts the direct current from the fuel cell into a three-phase alternating current stably. And a DC / AC converter function for supplying to the battery 30 and a AC / DC converter function for stably converting the regenerative alternating current from the motor 10 into a direct current and supplying the direct current to the battery 30.

  Next, a specific configuration of the capacitor device will be described in detail with reference to FIGS.

  FIG. 2 is a perspective view showing the capacitor device according to this embodiment together with the power module. FIG. 3 is a top view of the capacitor device according to the present embodiment. FIG. 4 is a perspective view transparently showing the internal structure of the capacitor device according to the present embodiment. In FIG. 4, the illustration of each capacitor is omitted for convenience of explanation.

As shown in FIGS. 2 to 4, the capacitor device of this embodiment is a component of the PDU 20. That is, the PDU 20 has a rectangular parallelepiped resin-made housing, and the capacitor module 100 that smoothes the DC current supplied from the battery 30 shown in FIG. 1 and extends in the longitudinal direction of the capacitor module 100. A power module 200 that is arranged in parallel so as to be along the front side surface and smoothed by the capacitor module 100 is converted into, for example, a three-phase AC current, and then supplied to the motor 10 shown in FIG. And a terminal block 300 interposed between the module 100 and the power module 200, and the capacitor device includes the capacitor module 100 and the terminal block 300. The PDU 20 may convert the alternating current supplied to the power module 200 into a direct current by the power module 200, smooth the smoothing by the capacitor module 100, and then store it in the battery 30. For convenience of explanation, a case where the direct current supplied to the capacitor module 100 is smoothed by the capacitor module 100 and further converted into a three-phase alternating current by the power module 200 and then supplied to the motor 10 is representatively described. To do.

  The capacitor module 100 includes capacitors 101a, 101b, and 101c. Such capacitors 101 a, 101 b, 101 c smooth the direct current supplied from the battery 30 and output it to the power module 200. The capacitors 101a, 101b, and 101c may be connected to each other in series, in parallel, or a combination thereof. In addition, a desired number of capacitors may be mounted.

  Here, the capacitor module 100 includes a positive electrode bus bar 110 and a negative electrode bus bar 120. That is, the positive electrode bus bar 110 and the negative electrode bus bar 120 are connected to the positive and negative terminals (not shown) in the capacitors 101a, 101b, and 101c, respectively, and are direct current smoothed by the capacitors 101a, 101b, and 101c. A current is input to the power module 200.

  The positive electrode bus bar 110 is connected to a flat plate-like longitudinal member 111 extending in the longitudinal direction of the capacitor module 100 and an upper side surface extending in the longitudinal direction of the longitudinal member 111 and extends in the lateral direction of the capacitor module 100. Plate-shaped transverse direction members 112a, 112b, and 112c. One end in the longitudinal direction of the longitudinal member 111 is exposed from a side surface extending in the lateral direction of the capacitor module 100 to form a positive electrode terminal 113 for connection to a positive electrode (not shown) of the battery 30. The transverse direction members 112a, 112b, and 112c are respectively connected to positive terminals 310a, 310b, and 310c disposed on the upper surface of the terminal block 300 formed on the capacitor module 100 on the side facing the power module 200.

  On the other hand, the negative electrode bus bar 120 is connected to the flat plate-like longitudinal member 121 extending in the longitudinal direction of the capacitor module 100 and the side surface upper portion extending in the longitudinal direction of the longitudinal member 121, and the lateral direction of the capacitor module 100. Plate-shaped transverse direction members 122a, 122b, and 122c extending in the horizontal direction. One end in the longitudinal direction of the longitudinal member 121 is exposed from a side surface extending in the transverse direction of the capacitor module 100 to form a negative electrode terminal 123 for connection to a negative electrode (not shown) of the battery 30. The transverse direction members 122a, 122b, 122c are connected to negative terminals 320a, 320b, 320c disposed on the upper surface of the terminal block 300, respectively.

  That is, the terminal block 300 is made of resin or the like, and is integrally formed with the casing of the capacitor module 100 or is formed separately and is disposed close to the front surface in the longitudinal direction of the capacitor module 100. , Located between the capacitor module 100 and the power module 200. From the viewpoint of miniaturization of the assembly of the capacitor module 100 and the terminal block 300, assembly accuracy, and the like, it is preferable that the terminal block 300 is integrally formed with the housing of the capacitor module 100.

Here, a flat plate-like longitudinal member 111 extending in the longitudinal direction of the capacitor module 100 in the positive electrode bus bar 110, and the capacitor module 1 in the negative electrode bus bar 120.
A flat plate-like longitudinal member 121 extending in the longitudinal direction of 00 is disposed in close proximity with a flat plate-like insulating member s interposed therebetween.

  Capacitor module 100 also includes output bus bars 130, 140, and 150 for supplying AC current output from power module 200 to motor 10. The output bus bars 130, 140, and 150 are each formed of a bifurcated flat plate member when viewed from above, and are higher than the vertical height positions of the positive electrode bus bar 110 and the negative electrode bus bar 120 in the housing of the capacitor module 100. Are arranged at different heights.

  That is, the output bus bars 130, 140, and 150 integrally include the low level connection members 131, 141, and 151, the high level connection members 132, 142, and 152, and the output members 133, 143, and 153, respectively. The end portions of the low level connection members 131, 141, and 151 are connected to low level terminals 330 a, 330 b, and 330 c disposed on the upper surface of the terminal block 300, respectively. The ends of the high level connection members 132, 142, 152 are connected to high level terminals 340a, 340b, 340c disposed on the upper surface of the terminal block 300, respectively.

  The ends of the output members 133, 143, and 153 are exposed from the lateral side of the capacitor module 100 and form output terminals 134, 144, and 154 for connection to the motor 10.

  Here, in the positive electrode bus bar 110, the negative electrode bus bar 120, and the output bus bars 130, 140, 150, the low level connection member 131, the lateral direction member 122a, the lateral direction member 112a, the high level connection member 132, the low level connection member 141, the lateral side. The direction member 122b, the lateral direction member 112b, the high level connection member 142, the low level connection member 151, the lateral direction member 122c, the lateral direction member 112c, and the high level connection member 152 are arranged in this order along the longitudinal direction of the capacitor module 100. Closely arranged.

  Further, the output members 133, 143, and 153 include U-shaped magnetic core members 150a, 150b, and 150c, and magnetic sensors 151a that include Hall elements that are disposed in gaps between the magnetic core members 150a, 150b, and 150c, respectively. 151b and 151c are provided. The magnetic fields generated in the gap portions of the magnetic core members 150a, 150b, and 150c change correspondingly depending on the magnitude of the alternating current flowing through the output bus bars 130, 140, and 150. Therefore, the magnetic sensors 151a, 151b, and 151c By detecting this change, the magnitude of the alternating current flowing through the output bus bars 130, 140, 150 can be detected. The magnetic core members 150a, 150b, and 150c and the magnetic sensors 151a, 151b, and 151c are respectively fixed to the casing of the capacitor module 100 via a support that is not shown.

  The outputs of the magnetic sensors 151a, 151b, and 151c are output pins 152a and 152b, output pins 152c and 152d, and output pins 152e that stand from the upper surface of the magnetic sensors 151a, 151b, and 151c and protrude from the upper surface of the capacitor module 100, respectively. , 152f. Thus, the magnetic core members 150a, 150b, and 150c and the magnetic sensors 151a, 151b, and 151c function as current sensors that detect the magnitude of the alternating current flowing through the output bus bars 130, 140, and 150. That is, since the capacitor module 100 incorporates current sensors (magnetic core members 150a, 150b, 150c and magnetic sensors 151a, 151b, 151c) that detect alternating currents transmitted through the output bus bars 130, 140, 150, the PDU 20 is reduced in size. Can be

If the power module 200 uses three-phase AC, the U-phase low-level switching power module 210a, the U-phase high-level switching power module 220a, the V-phase low-level switching power module 210b, and the V-phase high-level switching. Power module 220b, W phase low level switching power module 210c, and W phase high level switching power module 220c. The switching power modules 210 a, 210 b, 210 c, 220 a, 220 b, 220 c are arranged adjacent to each other in this order along the longitudinal direction of the capacitor module 100 so as to face the terminal block 300. Also on the front side surface in the direction, the terminal block 300 is sandwiched between them.

  Each of the switching power modules 210a, 210b, 210c, 220a, 220b, and 220c includes, for example, a switching element composed of a transistor such as an insulated gate bipolar transistor (IGBT) and a diode connected in reverse parallel to the switching element. A switching module for one phase molded as one arm is included.

  In this case, between the low-level switching power module 210a and the high-level switching power module 220a adjacent to the capacitor module 100 in the longitudinal direction, the collector of the switching element of the low-level switching power module 210a and the high level switching power module Wirings such as bus bars (not shown) that connect the emitters of the switching elements of the level switching power module 220a are bridged. This situation is the same between the low level switching power module 210b and the high level switching power module 220b and between the low level switching power module 210c and the high level switching power module 220c.

  Each of the low level switching power modules 210a, 210b, and 210c includes negative bus bars 211a, 211b, and 211c, output bus bars 212a, 212b, and 212c, and a plurality of control pins 213a, 213b, and 213c. The negative electrode bus bars 211 a, 211 b, and 211 c protrude from the surface facing the capacitor module 100 in the lateral direction and are connected to the negative terminals 320 a, 320 b, and 320 c disposed on the upper surface of the terminal block 300. The output bus bars 212a, 212b, and 212c are respectively connected to low level terminals 330a, 330b, and 330c disposed on the upper surface of the terminal block 300 protruding in the lateral direction from the surface facing the capacitor module 100. On / off of each switching element in the low-level switching power modules 210a, 210b, and 210c is controlled via control pins 213a, 213b, and 213c, respectively. Each of the switching elements converts a direct current supplied from the negative terminals 320a, 320b, and 320c through the negative bus bars 211a, 211b, and 211c into a low level voltage in the alternating current, and converts the low level voltage in the alternating current into the low level voltage. The data is output to the low level terminals 330a, 330b, and 330c via the output bus bars 212a, 212b, and 212c.

On the other hand, the high level switching power modules 220a, 220b, and 220c include positive bus bars 221a, 221b, and 221c, output bus bars 222a, 222b and 222c, and a plurality of control pins 223a, 223b and 223c, respectively. The positive electrode bus bars 221 a, 221 b, and 221 c protrude from the surface facing the capacitor module 100 in the lateral direction and are connected to the positive terminals 310 a, 310 b, and 310 c disposed on the upper surface of the terminal block 300. The output bus bars 222a, 222b, and 222c are respectively connected to high level terminals 340a, 340b, and 340c disposed on the upper surface of the terminal block 300 protruding in the lateral direction from the surface facing the capacitor module 100. The on / off states of the switching elements in the high level switching power modules 220a, 220b, and 220c are controlled via control pins 223a, 223b, and 223c, respectively. Each of the switching elements converts a direct current supplied from the positive terminals 310a, 310b, and 310c via the positive bus bars 221a, 221b, and 221c into a high level voltage in the alternating current, and converts the high level voltage in the alternating current into the high level voltage. The data is output to the high level terminals 340a, 340b, and 340c via the output bus bars 222a, 222b, and 222c.

  The terminal block 300 is preferably integrally formed on the side of the capacitor module 100 facing the power module 200, but the input terminal block 350a, 350b, 350c, and the output terminal block 360a. 360b, 360c, 360d are provided as a continuous body.

  On the input terminal block 350a, a positive terminal 310a and a negative terminal 320a are arranged corresponding to the U-phase high level switching power module 220a and the U-phase low level switching power module 210a, respectively. On the terminal block 350b, a positive terminal 310b and a negative terminal 320b are arranged corresponding to the V-phase high level switching power module 220b and the V-phase low level switching power module 210b, respectively, and the input terminal block 350c. Above, a positive terminal 310c and a negative terminal 320c are arranged corresponding to the W phase high level switching power module 220c and the W phase low level switching power module 210c, respectively.

  On the output terminal block 360a, a low level terminal 330a is disposed corresponding to the U phase low level switching power module 210a, and on the output terminal block 360d, a W phase high level switching power module is provided. A high level terminal 340c is provided corresponding to 220c, and a high-level terminal 340c corresponding to the U-phase high-level switching power module 220a and the V-phase low-level switching power module 210a is provided on the output terminal block 360b. A level terminal 340a and a low level terminal 330b are provided, and on the output terminal block 360c, a high level corresponding to the V phase high level switching power module 220b and the W phase low level switching power module 210c, respectively. A terminal 340b and a low level terminal 330c are provided.

  That is, in the terminal block 300, the output terminal block 360a, the input terminal block 350a, the output terminal block 360b, the input terminal block 350b, the output terminal block 360c, the input terminal block 350c, and the output terminal block 360d. In this order, they are adjacently arranged along the longitudinal direction of the capacitor module 100, and correspondingly, the low level terminal 330a, the negative terminal 320a, the positive terminal 310a, the high level terminal 340a, the low level terminal 330b, the negative terminal 320b, The positive terminal 310b, the high level terminal 340b, the low level terminal 330c, the negative terminal 320c, and the positive terminal 310c are arranged in this order so that the low level terminal, the negative terminal, the positive terminal, and the high level terminal are alternately arranged. The capacitor modules 100 are arranged close to each other along the longitudinal direction.

  Here, the height dimensions of the output terminal blocks 360a, 360b, 360c, and 360d are set differently from the vertical dimensions of the input terminal blocks 350a, 350b, and 350c, respectively. That is, the positive terminal 310a, 310b, 310c and the negative terminal 320a, 320b, 320c are arranged on the upper surface of the input terminal block 350a, 350b, 350c, and the upper surface of the output terminal block 360a, 360b, 360c, 360d. Since the low level terminals 330a, 330b, and 330c and the high level terminals 340a, 340b, and 340c are disposed, the height positions of the low level terminals 330a, 330b, and 330c and the high level terminals 340a, 340b, and 340c are arranged. Is set higher than the height positions of the positive terminals 310a, 310b, 310c and the negative terminals 320a, 320b, 320c.

Therefore, with this configuration, the output bus bars 130, 140, and 150 are three-dimensionally located at different height positions so as to be higher than the vertical height positions of the positive electrode bus bar 110 and the negative electrode bus bar 120 in the housing of the capacitor module 100. In combination with the arrangement of the capacitor module 100, the positive bus bar 110, the negative electrode bus bar 120, and the output bus bars 130, 140, 150 have a compact arrangement configuration that ensures a high degree of freedom in the casing of the capacitor module 100. As a result, the capacitor module 100 can be reduced in size.

  In addition, the transverse member 112a, 112b, 112c, the transverse member 122a, 122b, 122c, the low level connecting member 131, 141, 151 in the positive electrode bus bar 110, the negative electrode bus bar 120 and the output bus bar 130, 140, 150, and High level connection members 132, 142, 152, negative power bus bars 211a, 211b, 211c in output power modules 210a, 210b, 210c, 220b, 220c of power module 200, output bus bars 212a, 212b, 212c, positive bus bars 221a, 221b, 221c and the output bus bars 222a, 222b, 222c are larger in the terminal block 300 than the input terminal blocks 350a, 350b, 350c and in the vertical direction. Positive terminals 310a, 310b, 310c, negative terminals 320a, 320b, 320c, low level terminals 330a, 330b, 330c, and high level terminals 340a, 340b disposed on the upper surfaces of the output terminal blocks 360a, 360b, 360c, 360d. 340c, the lateral direction members 112a, 112b, 112c, the lateral direction members 122a, 122b, 122c, the low level connection members 131, 141, 151 and the high level between the capacitor module 100 and the power module 200 are connected. Level connection members 132, 142, 152, negative bus bars 211a, 211b, 211c, output bus bars 212a, 212b, 212c, positive bus bars 221a, 221b, 221c and output bus bars 222a, 222b, 222c The capacitor module 100 and the power module 200 having the switching power modules 210a, 210b, 210c, 220a, 220b, 220c arranged adjacent to each other can be connected to the terminal block. Thus, the PDU 20 can be miniaturized.

  When the PDU 20 having the above configuration is operated as a DC / AC converter under the control of the PCU 40, the direct current from the battery 30 is smoothed by the capacitors 101a, 101b, and 101c of the capacitor module 100, and then the positive electrode in the capacitor module 100 is obtained. The transverse members 112a, 112b, 112c of the bus bar 110 and the transverse members 122a, 122b, 122c of the negative bus bar 120, the positive terminals 310a, 310b, 310c and the negative terminals 320a, 320b, 320c of the terminal block 300, and the negative electrode of the power module 200 Via the bus bars 211a, 211b, 211c and the positive bus bars 221a, 221b, 221c, the low level switching power modules 210a, 210b, 210c of the power module 200 and the high level It is supplied to the replacement power modules 220a, 220b, and 220c and converted into three-phase alternating current, and the output terminals 212a, 212b, and 212c of the power module 200 and the output terminals 222a, 222b, and 222c, and the low level terminals 330a and 330b of the terminal block 300 are displayed. , 330c and high level terminals 340a, 340b, 340c, low level connection members 131, 141, 151 of the output bus bars 130, 140, 150 in the capacitor module 100, high level connection members 132, 142, 152 and output members 133, 143, It is supplied to the motor 10 via 153. At this time, the current sensor composed of the magnetic core members 150a, 150b, and 150c and the magnetic sensors 151a, 151b, and 151c detects the magnitude of the alternating current flowing through the output members 133, 143, and 153 of the output bus bars 130, 140, and 150. To do.

In the above configuration, the height of the input terminal blocks 350a, 350b, and 350c in which the positive terminals 310a, 310b, and 310c and the negative terminals 320a, 320b, and 320c in the terminal block 300 are disposed on the upper surface, The height dimensions of the output terminal blocks 360a, 360b, 360c, and 360d in which the level terminals 330a, 330b, and 330c and the high level terminals 340a, 340b, and 340c are disposed on the upper surface are the input terminal blocks 350a, 350b,
The height dimension of 350c may be larger than the height dimension of the output terminal blocks 360a, 360b, 360c, 360d. In such a case, the positive electrode bus bar 110 and the negative electrode bus bar in the capacitor module 100 correspondingly. The height position of 120 may be set to be higher than the height position of the output bus bars 130, 140, and 150.

  Further, the height dimensions of the input terminal blocks 350a, 350b, and 350c in the terminal block 300 may be different from each other within a range not exceeding the height dimensions of the output terminal blocks 360a, 360b, 360c, and 360d. The height dimensions of the output terminal blocks 360a, 360b, 360c, and 360d may be different from each other as long as they are not lower than the height dimensions of the input terminal blocks 350a, 350b, and 350c in the terminal block 300. It ’s good.

(Second Embodiment)
Next, the capacitor device according to the first embodiment of the present invention will be described in detail with reference mainly to FIGS.

  FIG. 5 is a perspective view showing the capacitor device together with the power module in the present embodiment. FIG. 6 is a top view of the capacitor device according to the present embodiment.

  In the capacitor device according to the present embodiment, the configuration of the terminal block 300 ′, and thus the target configuration of the capacitor module 100 ′, is different from that of the first embodiment because the configuration of the power module 200 ′ is different from that of the first embodiment. It differs from that of the embodiment. Therefore, in the present embodiment, description will be made by paying attention to such differences, and the same components are denoted by the same reference numerals, and description thereof will be simplified or omitted as appropriate.

  As shown in FIGS. 5 and 6, in this embodiment, the low-level and high-level switching power modules of the U phase, the V phase, and the W phase are integrated. That is, the power module 200 'includes a U-phase power module 230a, a V-phase power module 230b, and a W-phase power module 230c. The U-phase power module 230a, the V-phase power module 230b, and the W-phase power module 230c include positive bus bars 231a, 231b, and 231c, negative bus bars 232a, 232b, and 232c, and output bus bars 233a, 233b, and 233c, respectively. In addition, the U-phase power module 230a, the V-phase power module 230b, and the W-phase power module 230c are connected in reverse parallel to a switching element and a switching element, for example, a transistor such as an insulated gate bipolar transistor (IGBT). A switching module for one phase molded by connecting two diodes as one arm in series with each other is included.

  The terminal block 300 ′, which is preferably added as an integral configuration to the capacitor module 100 ′, is independent of the U-phase power module 230a, the V-phase power module 230b, and the W-phase power module 230c. Corresponding terminal blocks 370a, 370b, 370c. The positive terminals 371a, 371b, 371c, the negative terminals 372a, 372b, 372c, and the output terminals 373a, 373b, 373c are arranged on the upper surface of the terminal blocks 370a, 370b, 370c, respectively. A positive terminal block, a negative terminal block, and an output terminal block. Corresponding to such a configuration, the output bus bars 130 ′, 140 ′, 150 ′ in the capacitor module 100 ′ may be formed as simple linear members 135, 145, 155. Note that the terminal block 370a and the terminal block 370b and the terminal block 370b and the terminal block 370c are separated from each other with a gap along the longitudinal direction of the capacitor module 100 ′ for lightening. However, it may be integrally continuous in consideration of convenience during molding.

  That is, in the U-phase power module 230a, the V-phase power module 230b, and the W-phase power module 230c, the positive bus bars 231a, 231b, and 231c, the negative bus bars 232a, 232b, and 232c, and the output bus bars 233a, 233b, and 233c are terminals. The positive electrode bus bar 110 of the capacitor module 100 ′, the negative electrode via the positive terminals 371a, 371b, 371c, the negative terminals 372a, 372b, 372c and the output terminals 373a, 373b, 373c disposed on the upper surface of the bases 370a, 370b, 370c. The bus bar 120 and the output bus bars 130 ′, 140 ′, and 150 ′ are connected correspondingly.

  Further, in the positive electrode bus bar 110, the negative electrode bus bar 120, and the output bus bars 130 ′, 140 ′, and 150 ′, the lateral direction member 122a, the output bus bar 130 ′, the lateral direction member 112a, the lateral direction member 122b, the output bus bar 140 ′, the lateral direction The member 112b, the transverse direction member 122c, the output bus bar 150 ′, and the transverse direction member 112c are arranged close to each other along the longitudinal direction of the capacitor module 100 in this order.

  Further, in the terminal block 300 ′, the terminal blocks 370a, 370b, and 370c are disposed in the vicinity of each other along the longitudinal direction of the capacitor module 100 in this order, while being disposed close to each other along the longitudinal direction of the capacitor module 100. Correspondingly, the negative terminal 372a, the output terminal 373a, the positive terminal 371a, the negative terminal 372b, the output terminal 373b, the positive terminal 371b, the negative terminal 372c, the output terminal 373c, and the positive terminal 371c are arranged in this order in the longitudinal direction. Are arranged close to each other.

  Here, regarding the terminal block 300 ′, in the terminal block 370a, the height dimension of the upper surface where the output terminal 373a is disposed is the height dimension of the upper surface where the positive electrode terminal 371a is disposed and the negative electrode terminal 372a. The height dimension of the upper surface where the output terminal 373b is disposed in the terminal block 370b is the height dimension of the upper surface where the positive terminal 371b is disposed and the negative terminal 372b. In the terminal block 370c, the height dimension of the upper surface where the output terminal 373c is disposed is the height dimension of the upper surface where the positive terminal 371c is disposed. And the height dimension of the upper surface on which the negative electrode terminal 372c is disposed.

  Therefore, even in such a configuration, the lateral direction members 112a, 112b, 112c of the positive electrode bus bar 110 in the capacitor module 100 ′, the lateral direction members 122a, 122b, 122c of the negative electrode bus bar 120, and the output bus bars 130 ′, 140 ′, 150 ′, Positive bus bars 231a, 231b, 231c, negative bus bars 232a, 232b, 232c and output bus bars 233a, 233b, 233c in the U-phase power module 230a, V-phase power module 230b, and W-phase power module 230c of the power module 200 ′; In the terminal block 300 ′, positive terminals 371a, 371b, 371c, negative terminals 372a, 372b, 372c and an output terminal 373 disposed on the upper surface of the terminal blocks 370a, 370b, 370c. , 373b, 373c, the lateral direction members 112a, 112b, 112c, the lateral direction members 122a, 122b, 122c and the output bus bars 130 ′, 140 ′ between the capacitor module 100 ′ and the power module 200 ′. , 150 ′ and the positive electrode bus bars 231a, 231b, 231c, the negative electrode bus bars 232a, 232b, 232c, and the output bus bars 233a, 233b, 233c, and the capacitor module 100 ′ are adjacent to each other. The U-phase power module 230a, the V-phase power module 230b, and the W-phase power module 230c that are arranged and arranged can be arranged close to each other via the terminal block 300 ′, and the PDU 20 can be downsized. Become.

  Even in the above configuration, in the terminal block 370a, the height dimension of the upper surface where the positive electrode terminal 371a is disposed and the height dimension of the upper surface where the negative electrode terminal 372a is disposed are the output terminal 373a. The height dimension of the upper surface where the positive terminal 371b is disposed and the height dimension of the upper surface where the negative terminal 372b is disposed in the terminal block 370b are set higher than the height dimension of the upper surface. In the terminal block 370c, the height dimension of the upper surface where the positive electrode terminal 371c is disposed and the height dimension of the upper surface where the negative electrode terminal 372c is disposed are output. It may be set larger than the height dimension of the upper surface on which the terminal 373c is disposed.

  Also in the terminal blocks 370a, 370b, and 370c, the height of the upper surface where the positive terminal 371a is disposed, the height of the upper surface where the negative terminal 372a is disposed, and the height of the upper surface where the positive terminal 371b is disposed. The height dimension and the height dimension of the upper surface where the negative electrode terminal 372b is disposed, and the height dimension of the upper surface where the positive electrode terminal 371c is disposed and the height dimension of the upper surface where the negative electrode terminal 372c are disposed are respectively The height dimension of the upper surface where the output terminal 373a is disposed, the height dimension of the upper surface where the output terminal 373b is disposed, and the height dimension of the upper surface where the output terminal 373c is disposed are different. , May be different from each other.

  According to the above configuration, the positive terminal block is provided so as to be able to face the external circuit device and is connected to the end on the one end side of the positive bus bar. A negative terminal block provided with a negative terminal to which an end of one end of the negative bus bar is connected; and an output terminal provided to be opposed to an external circuit device and connected to an end of the output bus bar. A terminal block having an output terminal block disposed, and the height dimension of the positive terminal block and the negative terminal block is different from the height dimension of the output terminal block, the positive bus bar, the negative bus bar and the output bus bar are: Built-in capacitor module, and can be connected to external circuit device via corresponding positive terminal, negative terminal and output terminal, increasing the flexibility of wiring between the capacitor module and power drive Both the power drive unit can be miniaturized.

  In addition, since the positive bus bar, the negative bus bar, and the output bus bar are arranged three-dimensionally inside the capacitor module, the bus bars can be arranged three-dimensionally while reducing the clearance between the bus bars. The degree of freedom in wiring between the module and the power drive can be further increased, and the power drive unit can be reduced in size.

  In addition, the capacitor module can be opposed to the external circuit device via the positive terminal block, the negative terminal block, and the output terminal block that are arranged close to each other, so that the capacitor module and the power drive can be connected via the terminal block. The power drive units can be miniaturized because they can be arranged close to each other.

  In addition, since the positive terminal block, the negative terminal block, and the output terminal block are formed integrally with the capacitor module, the capacitor module and the terminal block can be arranged close to each other, and the power drive unit can be downsized. it can.

  In addition, since the capacitor module has a built-in current sensor, the magnitude of the current flowing through the output bus bar can be detected, and the power drive unit can be downsized.

  Further, since the external circuit device is a power module that converts a direct current from the capacitor module into an alternating current, typically, an AC / DC conversion function can be realized, and the power drive unit can be downsized.

  In the present invention, the type, arrangement, number, and the like of the members are not limited to the above-described embodiments, and the components depart from the gist of the invention, such as appropriately replacing the constituent elements with those having the same operational effects. Of course, it can be appropriately changed within the range not to be.

  As described above, the present invention can provide a capacitor device including a plurality of terminal blocks for connecting a capacitor module to an external circuit device such as a power module so that the power drive unit can be miniaturized. It is expected that it can be widely applied to power drive units, etc. because of its universal character.

10 ... Motor 20 ... PDU (Power Drive Unit)
30 ... Battery 40 ... PCU (Power Control Unit)
100, 100 '... Capacitor modules 101a, 101b, 101c ... Capacitor 110 ... Positive electrode bus bar 111 ... Longitudinal member 112a, 112b, 112c ... Lateral member 113 ... Positive electrode terminal 120 ... Negative electrode bus bar 121 ... Longitudinal member 122a, 122b, 122c ... transverse direction member 123 ... negative electrode terminals 130, 140, 150, 130 ', 140', 150 '... output bus bars 131, 141, 151 ... low level connection members 132, 142, 152 ... high level connection members 133, 143, 153 ... output members 134, 144, 154 ... output terminals 135, 145, 155 ... linear members 150a, 150b, 150c ... magnetic core members 151a, 151b, 151c ... magnetic sensors 152a, 152b, 152c, 152e, 152f ... output pins 200 2 00 '... Power module 210a ... U phase low level switching power module 210b ... V phase low level switching power module 210c ... W phase low level switching power modules 211a, 211b, 211c ... Negative electrode bus bars 212a, 212b, 212c ... Output Bus bar 213a, 213b, 213c ... control pin 220a ... U-phase high level switching power module 220b ... V-phase high level switching power module 220c ... W-phase high level switching power module 221a, 221b, 221c ... positive bus bar 222a, 222b , 222c ... Output bus bars 223a, 223b, 223c ... Control pin 230a ... U-phase power module 230b ... V-phase power module 230c ... W-phase power module 231a, 231b, 231c ... Positive bus bars 232a, 232b, 232c ... Negative bus bars 233a, 233b, 233c ... Output bus bars 300, 300 '... Terminal blocks 310a, 310b, 310c ... Positive terminals 320a, 320b, 320c ... Negative terminals 330a, 330b, 330c ... Low level Terminals 340a, 340b, 340c ... High level terminals 350a, 350b, 350c ... Input terminal blocks 360a, 360b, 360c, 360d ... Output terminal blocks 370a, 370b, 370c ... Terminal blocks 371a, 371b, 371c ... Positive terminals 372a, 372b, 372c: negative terminal 373a, 373b, 373c: output terminal

Claims (6)

A capacitor module having a capacitor;
A positive electrode bus bar whose one end is freely connectable to an external circuit device and whose other end is freely connectable to a positive potential;
A negative electrode bus bar whose one end is freely connectable to the external circuit device and whose other end is freely connectable to a negative potential;
An output bus bar whose one end is freely connectable to the external circuit device and whose other end is freely connectable to a load;
A positive terminal block provided with a positive electrode terminal provided so as to be able to face the external circuit device and connected to an end of the positive electrode bus bar, and provided so as to be able to face the external circuit device. A negative terminal block provided with a negative terminal to which the end of the one end side is connected, and an output terminal provided to be opposed to the external circuit device and to which the end of the output bus bar is connected A terminal block having an output terminal block disposed with
The height dimension of the positive terminal block and the negative terminal block is different from the height dimension of the output terminal block, the positive bus bar, the negative bus bar and the output bus bar are built in the capacitor module, the positive terminal, A capacitor device, wherein the capacitor device is freely connectable to the external circuit device via the negative electrode terminal and the output terminal.   The capacitor device according to claim 1, wherein the positive electrode bus bar, the negative electrode bus bar, and the output bus bar are arranged three-dimensionally inside the capacitor module.   3. The capacitor module according to claim 1, wherein the capacitor module can face the external circuit device via the positive terminal block, the negative terminal block, and the output terminal block that are arranged close to each other. The capacitor device described.   4. The capacitor device according to claim 1, wherein the positive terminal block, the negative terminal block, and the output terminal block are integrally formed with the capacitor module. 5.   5. The capacitor device according to claim 1, wherein the capacitor module includes a current sensor that detects a magnitude of a current flowing through the output bus bar.   The capacitor device according to claim 1, wherein the external circuit device is a power module that converts a direct current from the capacitor module into an alternating current.

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