JP5567848B2 - Electrical equipment - Google Patents

Description

  The present invention relates to an electrical device, and more particularly to an electrical device including a plurality of electrical components stacked in a predetermined direction.

  Japanese Patent Laying-Open No. 2004-297033 (Patent Document 1) discloses positioning a semiconductor device by bonding a positioning piece to a cooling tube sandwiching the semiconductor device.

  Japanese Patent Laying-Open No. 2006-278467 (Patent Document 2) discloses a connection member that positions pins of a semiconductor device with respect to a substrate.

  Japanese Patent Laying-Open No. 2007-53307 (Patent Document 3) shows a structure in which a channel tube is stacked on an electronic component.

  In JP 2005-228919 A (Patent Document 4), an uneven portion that individually determines the position of each semiconductor module or cooler in the stacking direction is formed on a support member that supports the semiconductor module and cooler. It is shown.

JP 2004-297033 A JP 2006-278467 A JP 2007-53307 A JP 2005-228919 A

  In the invention described in Patent Document 1, positioning is facilitated by the positioning piece, but a positioning piece bonding step is required, and the manufacturing cost of the electric device increases by providing an extra step. Even the inventions described in Patent Documents 2 to 4 do not sufficiently solve the above problem.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an electric device with reduced manufacturing cost by easily positioning a plurality of electric components stacked in a predetermined direction. To provide equipment.

  The electrical device according to the present invention includes a plurality of electrical components each having a pin and stacked in a first direction, a first member having a first hole extending in the first direction, and a first member stacked on the first member. A second member provided with a second hole extending in a second direction intersecting the first direction, and a third member provided on the second member and having a third hole, the first hole, Electrical component pins are inserted into the second hole and the third hole.

  According to the above invention, the electrical component can be easily positioned by inserting the pin of the electrical component through the first hole extending in the first direction and the second hole extending in the second direction. As a result, it is not necessary to provide a separate positioning step when inserting the pin through the third hole of the third member. As a result, it is possible to reduce the manufacturing cost of the electrical equipment.

  As an example, in the electric device, the first hole has a tapered portion whose width decreases along the first direction.

As an example, in the electric device, the first hole has a bowl shape.
As an example, in the electrical device, the third member includes an electrical circuit, the electrical circuit and the pin are electrically connected, and an electrical signal is input to and output from the electrical component through the electrical circuit and the pin.

  As one example, in the above-described electrical apparatus, the electrical component is a switching element included in a control device for an electric vehicle.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing cost of an electric equipment can be reduced by positioning the several electric component laminated | stacked on the predetermined direction easily.

It is a circuit diagram which shows the structure of the principal part of the control apparatus for electric vehicles containing the electric equipment which concerns on one embodiment of this invention. It is a perspective view which shows the electrical component contained in the electric equipment which concerns on one embodiment of this invention. It is a side view which shows the electric equipment which concerns on one embodiment of this invention. It is a front view which shows the electric equipment which concerns on one embodiment of this invention. It is a top view of the 1st member contained in the electric equipment shown by FIG. 3, FIG. It is a top view of the 2nd member contained in the electric equipment shown by FIG. 3, FIG. It is a top view of the 3rd member contained in the electric equipment shown by FIG. 3, FIG. It is a figure which shows the modification of the 1st hole formed in the 1st member shown in FIG.

  Embodiments of the present invention will be described below. Note that the same or corresponding portions are denoted by the same reference numerals, and the description thereof may not be repeated.

  Note that in the embodiments described below, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified. In the following embodiments, each component is not necessarily essential for the present invention unless otherwise specified.

  FIG. 1 is a circuit diagram showing a configuration of a main part of a control device (PCU 300) for an electric vehicle including an electric device according to the present embodiment.

  Referring to FIG. 1, PCU 300 is connected to battery 100 and motor generators 210 and 220. PCU 300 includes a converter 310, inverters 320 (321 and 322), a control device 330, and capacitors C1 and C2. Converter 310 is connected between battery 100 and inverter 320, and inverters 321 and 322 are connected to motor generators 210 and 220, respectively.

  Converter 310 includes power transistors Q1 and Q2, diodes D1 and D2, and a reactor L. Power transistors Q1 and Q2 are connected in series and receive a control signal from control device 330 as a base. Diodes D1 and D2 are connected between the collector and emitter of power transistors Q1 and Q2, respectively, so that current flows from the emitter side to the collector side of power transistors Q1 and Q2. Reactor L has one end connected to a power supply line connected to the positive electrode of battery 100, and the other end connected to a connection point between power transistors Q1 and Q2.

  Converter 310 boosts the DC voltage received from battery 100 using reactor L, and supplies the boosted boosted voltage to the power supply line. Converter 310 steps down DC voltage received from inverter 320 and charges battery 100.

  Inverters 321 and 322 include U-phase arms 321U and 322U, V-phase arms 321V and 322V, and W-phase arms 321W and 322W, respectively. U-phase arm 321U, V-phase arm 321V and W-phase arm 321W are connected in parallel between nodes N1 and N2. Similarly, U-phase arm 322U, V-phase arm 322V, and W-phase arm 322W are connected in parallel between nodes N1 and N2.

  U-phase arm 321U includes two power transistors Q3 and Q4 connected in series. Similarly, U-phase arm 322U, V-phase arms 321V and 322V, and W-phase arms 321W and 322W each include two power transistors Q5 to Q14 connected in series. Further, diodes D3 to D14 that flow current from the emitter side to the collector side are connected between the collector and emitter of each of the power transistors Q3 to Q14.

  An intermediate point of each phase arm of inverters 321 and 322 is connected to each phase end of each phase coil of motor generators 210 and 220, respectively. In motor generators 210 and 220, one end of three coils of U, V, and W phases is commonly connected to the midpoint.

  Capacitor C1 is connected to battery 100 in parallel. Capacitor C2 is connected in parallel to inverters 321 and 322. Capacitors C1 and C2 smooth the voltage level of the power supply line.

  Inverters 321, 322 drive motor generators 210, 220 by converting the DC voltage from capacitor C2 into an AC voltage based on a drive signal from control device 330.

  Current sensors 340U, 340V, 340W, 350U, 350V, and 350W detect currents flowing through motor generators 210 and 220, respectively, and output the detected currents to control device 330.

  Control device 330 calculates each phase coil voltage of motor generators 210 and 220 based on the motor torque command value, each phase current value of motor generators 210 and 220, and the input voltage of inverters 321 and 322. Based on this, a PWM (Pulse Width Modulation) signal for turning on / off the power transistors Q3 to Q14 is generated and output to the inverters 321 and 322.

  Control device 330 calculates the duty ratio of power transistors Q1 and Q2 for optimizing the input voltage of inverter 320 based on the motor torque command value and the motor rotation speed described above, and power based on the calculation result. A PWM signal for turning on / off the transistors Q1 and Q2 is generated and output to the converter 310.

  Further, control device 330 controls switching operations of power transistors Q <b> 1 to Q <b> 14 in converter 310 and inverter 320 in order to charge battery 100 by converting AC power generated by motor generators 210 and 220 into DC power.

  The power transistors Q1 to Q14 described above are stacked and disposed with a cooler (not shown) interposed therebetween. The electrical device according to the present embodiment is characterized by a method of positioning power transistors Q1 to Q14 as the “electrical component”. That is, the electric device according to the present embodiment is a control device (PCU 300) for an electric vehicle, and is characterized by a method of positioning power transistors Q1 to Q14 as “switching elements” included therein. is there.

  FIG. 2 is a perspective view showing an electrical component 40 included in the electrical apparatus according to the present embodiment. As described above, the electrical component 40 corresponds to the power transistors Q1 to Q14.

  As shown in FIG. 2, the electrical component 40 includes a pin 41, a main body 42, and a bus bar 43. The pin 41 is provided so as to protrude from the main body 42. The bus bar 43 protrudes from the main body 42 similarly to the pin 41. The bus bar 43 is provided on the opposite side of the pin 41 with respect to the main body 42. A plurality of pins 41 and bus bars 43 are provided.

  3 and 4 are a side view and a front view, respectively, showing the electrical apparatus according to the present embodiment. As shown in FIGS. 3 and 4, the electrical device according to the present embodiment is formed by stacking a plurality of electrical components 40 in a predetermined direction (Y-axis direction in FIG. 3). Here, the plurality of pins 41 arranged in the X-axis direction orthogonal to the Y-axis direction are inserted through holes provided in the first member 10, the second member 20, and the third member 30, respectively.

  In the electrical device according to the present embodiment, the electrical component is positioned using the pin 41 described above. In other words, the electrical device according to the present embodiment is characterized by the shape of the hole through which the pin 41 formed in the first member 10 to the third member 30 is inserted.

  5 to 7 are top views of the first member 10, the second member 20, and the third member 30, respectively.

  Referring to FIG. 5, the first member 10 includes a frame portion 10A and a plate-like portion 10B. A first hole 11 and a first bolt hole 12 are formed in the frame portion 10A. The first hole 11 has a vertically long shape extending in the Y-axis direction. The first hole 11 is formed at a position corresponding to each pin 41. Therefore, the electrical component 40 is positioned in the X-axis direction by inserting the pin 41 into the first hole 11.

  Referring to FIG. 6, second member 20 includes a second hole 21 and a second bolt hole 22. The second hole 21 has a horizontally long shape extending in the X-axis direction. The 2nd hole 21 is formed in the position corresponding to the one end part (upper end part in Drawing 5) of the 1st hole 11 mentioned above. Therefore, the electric component 40 is positioned in the Y-axis direction by inserting the pin 41 into the second hole 21.

  Referring to FIG. 7, third member 30 includes a third hole 31 and a third bolt hole 32. The third hole 31 has a circular shape. The third hole is provided at a position corresponding to each pin 41.

  By the way, the 3rd member 30 is a board | substrate containing an electric circuit. By inserting the pin 41 into the third hole 31, the electric circuit formed in the third member 30 and the pin 41 are electrically connected. As a result, an electrical signal is input to and output from the electrical component 40 via the electrical circuit and the pin 41.

  When the electric component 40 is operated, the third member 30 also generates heat in the same manner as the electric component 40. In order to cool the third member, a heat dissipation path for releasing heat from the second member 20 adjacent to the third member 30 is provided. Thereby, the heat generated in the third member 30 is radiated through the second member 20.

  When assembling the electric device, the pin 41 is inserted through the first hole 11, the second hole 22, and the third hole 32. The same bolt is inserted into the first bolt hole 12, the second bolt hole 22, and the third bolt hole 32. Thereby, the 1st member 10, the 2nd member 20, and the 3rd member 30 are integrated.

  As described above, the electrical component 40 is positioned in the X-axis direction by inserting the pin 41 into the first hole 11. Furthermore, the electric component 40 is positioned in the Y-axis direction by inserting the pin 41 into the second hole 12. Therefore, when the pin 41 is inserted into the first hole 11 and the second hole 21, the positioning of the plurality of electrical components 40 in the X-axis direction and the Y-axis direction is completed. Therefore, when inserting the pin 41 into the third hole 31 of the third member 30, it is not necessary to perform positioning again using a separate positioning jig. As a result, it is possible to reduce the manufacturing cost of the electrical equipment.

  When assembling an electrical device, first, the pins 41 of the plurality of electrical components 40 are inserted into the first holes 11 of the first member 10. Thereby, positioning in the X-axis direction is performed. Thereafter, the plurality of electrical components 40 are moved so that the pin 41 is positioned at the upper end portion of the first hole 11, and the second member 20 is stacked on the first member 10, that is, the pin 41 is moved to the second member. 20 through the second hole 21. Thereby, positioning in the Y-axis direction is performed. Thereafter, the pin 41 is inserted into the third hole 31 of the third member 30.

  FIG. 8 is a view showing a modification of the first hole 11. The first hole 11 shown in FIG. 8 is characterized by being formed in a bowl shape while having a long shape in the X-axis direction, as in the example of FIG. That is, the first hole 11 according to this modification has a tapered portion 11A whose width decreases along the X-axis direction. In this way, when the pin 41 is inserted into the first hole 11, there is a slight “play” in the X-axis direction, and the insertion of the pin 41 is easy. Thereafter, the pin 41 is slid in the Y-axis direction, thereby positioning the pin 41 in the X-axis direction.

  According to the electrical device according to the present embodiment, the electrical component 40 is positioned by inserting the pin 41 of the electrical component 40 through the first hole 11 extending in the Y-axis direction and the second hole 21 extending in the X-axis direction. Can be easily performed. As a result, when inserting the pin 41 into the third hole 31 of the third member 30, there is no need to provide a separate positioning step. As a result, it is possible to reduce the manufacturing cost of the electrical equipment.

  In the present embodiment, the example in which the extending direction of the first hole 11 and the extending direction of the second hole 21 are orthogonal to each other has been described. However, the extending direction of the first hole 11 and the extending direction of the second hole 21 are the same. It does not necessarily need to be orthogonal, and may intersect at an angle other than 90 degrees as long as the above positioning effect can be obtained.

  The above contents are summarized as follows. That is, the electrical device according to the present embodiment has the pins 41, each having a plurality of electrical components 40 stacked in the Y-axis direction (first direction), and the first hole 11 extending in the Y-axis direction. The first member 10, the second member 20 provided on the first member 10 so as to overlap the first member 10, and having a second hole 21 extending in the X-axis direction (second direction) intersecting the Y-axis direction, and the second member 20 And the third member 30 having the third hole 31, and the pin 41 of the electrical component 40 is inserted into the first hole 11, the second hole 21, and the third hole 31.

  Although the embodiments of the present invention have been described above, the embodiments disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  10 1st member, 10A frame part, 10B plate-like part, 11 1st hole, 11A taper part, 12 1st bolt hole, 20 2nd member, 21 2nd hole, 22 2nd bolt hole, 30 3rd member, 31 3rd hole, 32 3rd bolt hole, 40 electrical parts, 41 pin, 42 body, 43 bus bar, 100 battery, 210, 220 motor generator, 300 PCU, 310 converter, 320, 321, 322 inverter, 321U, 322U U Phase Arm, 321V, 322V V Phase Arm, 321W, 322W W Phase Arm, 330 Controller, 340U, 340V, 340W, 350U, 350V, 350W Current Sensor, C1, C2 Capacitor, D1-D14 Diode, L Reactor, Q1- Q14 Power transistor.

Claims (5)

A plurality of electrical components each having a pin and stacked in a first direction;
A first member having a first hole extending in the first direction;
A second member provided on the first member and having a second hole extending in a second direction intersecting the first direction;
A third member having a third hole provided over the second member,
The electrical device in which the pin of the electrical component is inserted into the first hole, the second hole, and the third hole.   The electric device according to claim 1, wherein the first hole has a tapered portion whose width decreases along the first direction.   The electrical device according to claim 1, wherein the first hole has a bowl shape. The third member includes an electrical circuit;
The electrical circuit and the pin are electrically connected;
The electrical device according to any one of claims 1 to 3, wherein an electrical signal is input to and output from the electrical component via the electrical circuit and the pin.   The electrical device according to any one of claims 1 to 4, wherein the electrical component is a switching element included in a control device for an electric vehicle.

Images