JP2009213307A - Power converter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power converter for a substrate, which easily adjusting the switching speed of a gate signal for a switching element used for an inverter, and to provide a converter having a small area for mounting an adjusting member. <P>SOLUTION: The power converter 1 has the switching element 138 for converting a power having the substrate 7, an element body positioned on the first surface 71 side of the substrate 7 and a gate terminal, electrically connected to the element body and penetrated and arranged to the second surface 72 side as the rear side from the first surface 71 side of the substate 7 to be input and further includes an adjustment circuit 3, having the adjusting members on the substrate 7 so as to be electrically connected to the gate terminal and adjusting the switching operation of the switching element 138 for power conversion, by adjusting the switching speed of the gate signal. A first adjustment member 75 in a plurality of adjusting members is arranged on the second surface 72 of the substrate 7, and a second adjusting member 74 is arranged on the first surface 71 of the substrate 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power conversion device.

  A power conversion device including a power source, an inverter, and a motor generator (MG) is connected to a gate terminal of a switching element constituting the inverter, and adjusts input power from the power source to adjust a switching operation of the switching element. Have In the gate drive circuit, for example, changing the resistance values of the turn-on resistor and the turn-off resistor (adjusting member) for adjusting the switching speed of the gate signal input to the gate terminal affects the switching operation. If the resistance value is changed and the switching operation is made faster, the surge voltage becomes larger, and if the switching operation is made slower, the loss becomes larger. As described above, since the switching operation of the switching element is uniquely determined by the gate signal, it is necessary to adjust the switching operation by adjusting the resistance in consideration of the installation environment, operating conditions, and the like.

  For example, it is necessary to adjust and determine the switching speed of the gate signal in a prototype stage, which is a stage before the power converter is manufactured on the production line. In the trial production stage, the switching speed of the gate signal is adjusted while changing the adjustment member for adjusting the switching speed of the gate signal on the substrate. However, there is not much space to arrange the adjustment member on one side of the board that electrically connects the terminals of the switching element such as the gate terminal, and the element body of the switching element is erected on the other side. It takes a lot of work to repeatedly change the adjustment member. In other words, it is not possible to arrange all adjustment members on one side where adjustment members are easy to change, and it is very difficult to change adjustment members on the other side, so it is efficient to adjust the switching speed of the gate signal. There is a fact that it can not be done.

In Patent Document 1, a gate resistance value (gate signal) composed of an insulation circuit (photocoupler), a command selection circuit, a transistor, an IGBT (switching element) on / off gate resistance, and a power source can be changed from the outside. A drive circuit is presented. This gate drive circuit has a plurality of ON / OFF adjustment members for each IGBT, and any adjustment signal and command signal are input to the command selection circuit via the insulation circuit. Whether to switch to a member can be done in real time.
Japanese Patent Laid-Open No. 10-70878

  However, although the gate drive circuit of Patent Document 1 described above can change the gate resistance value from the outside in real time, it is necessary to mount a plurality of adjustment members so that the gate resistance value can be selected in real time. This increases the area for mounting and increases the cost.

  The present invention has been made in view of the above problems, and it is easy to adjust the switching speed of a gate signal for adjusting the switching operation of a switching element used in an inverter or converter, and the area for mounting the adjusting member does not increase. It is an object to be solved to provide a power converter with a small substrate.

The structural features of the invention according to claim 1 for solving the above-described problems are as follows:
A substrate,
An element main body located on the first surface side of the substrate, and an electrode body that is electrically connected to the element main body and penetrates from the first surface side of the substrate to a second surface side that is the back surface side of the first surface. And a gate terminal that performs a switching operation according to a gate signal that is input, and a switching element for power conversion comprising:
An adjustment circuit including an adjustment member mounted on the substrate so as to be electrically connected to the gate terminal; and an adjustment circuit for adjusting a switching operation of the power conversion switching element by adjusting a switching speed of a gate signal;
A power conversion device comprising:
The adjustment member comprises a plurality of
A first adjusting member that is at least one of the plurality of adjusting members is disposed on the first surface of the substrate;
The remaining second adjustment member among the plurality of adjustment members is arranged on the second surface of the substrate.

  According to a second aspect of the present invention, in the first aspect, the power conversion switching element constitutes an inverter, and the high-voltage upper-arm switching element and the high-voltage GND side are connected in series. A switching element for a lower arm, the circuit constants of the adjustment circuit in the switching element for the upper arm and the switching element for the lower arm are the same, and the first adjustment member is any of the plurality of switching elements. The adjustment member constituting the adjustment circuit, and the second adjustment member is the adjustment member constituting the remaining adjustment circuit among the plurality of switching elements.

  Further, the structural feature of the invention according to claim 3 is that in claim 1, the power conversion switching element constitutes a multiphase inverter, and in each phase connected in parallel, the high voltage side connected in series. A switching element for the upper arm and a switching element for the lower arm on the high-voltage GND side, and the circuit constants of the adjustment circuit in the switching element for the upper arm and the switching element for the lower arm are the same, and the first adjustment The member is the adjustment member constituting the adjustment circuit of any of the plurality of switching elements, and the second adjustment member is the adjustment constituting the remaining adjustment circuit of the plurality of switching elements. It is a member.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the first adjustment member constitutes the adjustment circuit of the switching element that constitutes one of the polyphases. It is an adjustment member, and the second adjustment member is the adjustment member constituting the adjustment circuit of the switching element constituting the remaining phase of the multiphase.

  Further, the structural feature of the invention according to claim 5 is that in claim 3 or 4, the power conversion switching element is connected in parallel to the multiphase inverter and arranged in parallel for each phase on the substrate. And the first adjustment member is the adjustment circuit for the switching element for power conversion of a phase arranged at a position farthest from the surge voltage absorption capacitor on the substrate. Including the adjusting member.

  According to a sixth aspect of the present invention, in any one of the second to fifth aspects, the adjustment circuit includes a turn-on resistance and a turn-off resistance of the power conversion switching element, and other elements. Is to include.

  The structural feature of the invention according to claim 7 is that in claim 6, the adjustment circuit further includes an adjustment capacitor.

  According to an eighth aspect of the present invention, the adjustment circuit according to the first aspect is characterized in that the adjustment circuit adjusts a switching speed of the gate signal of one of the power conversion switching elements and is connected in parallel. An adjustment member, wherein the first adjustment member is one of the plurality of adjustment members constituting one adjustment circuit, and the second adjustment member constitutes one adjustment circuit. It is the remaining of the plurality of the adjustment members.

  The invention according to claim 9 is characterized in that, in claim 8, the power conversion switching element constitutes a multi-phase inverter, and the upper arm on the high voltage side connected in series in each phase connected in parallel. The power conversion device is further connected in parallel to the multi-phase inverter and arranged in parallel for each phase on the substrate. A surge voltage absorbing capacitor disposed in parallel with the element, wherein the first adjustment member is a phase of the power conversion switching element of the phase disposed farthest from the surge voltage absorbing capacitor on the substrate. Including any one of a plurality of the adjustment members constituting the adjustment circuit, and the second adjustment member is disposed on the substrate. There are is to include the rest of the plurality of the adjusting member constituting the adjusting circuit of the power converter switching elements of phase arranged farthest from said surge voltage absorbing capacitors.

  According to a tenth aspect of the present invention, in the first aspect, the adjustment circuit includes a turn-on resistance and a turn-off resistance of the switching element for power conversion, and other elements, and the first adjustment member includes: It includes at least the turn-on resistance and the turn-off resistance, and the second adjustment member includes a part of the other element.

  According to an eleventh aspect of the invention, in the tenth aspect, the adjustment circuit further includes an adjustment capacitor, and the first adjustment member further includes the adjustment capacitor.

  According to a twelfth aspect of the present invention, in any one of the first to eleventh aspects, the switching element for power conversion further outputs a boosted DC voltage to the inverter and is output from the inverter. The converter switching element which comprises the buck-boost converter which pressure | voltage-falls DC voltage is included, A said 1st adjustment member is that the said adjustment member of the said switching element for converters is included.

  In the invention according to claim 1, in the power conversion device of the present invention, the adjustment member provided in the adjustment circuit that adjusts the switching operation of the switching element for power conversion is the second adjustment member arranged on the first surface of the substrate. And a first adjustment member disposed on the second surface. In other words, the adjustment member is not disposed on either the first surface or the second surface of the substrate, but is distributed between the first surface and the second surface. Therefore, the two surfaces of the substrate can be used effectively, the expansion of the substrate can be suppressed, and the reduction can be made possible.

  In the invention according to claim 2, the power conversion device of the present invention includes a switching element for the upper arm on the high-voltage side and a switching element for the lower arm on the high-voltage GND side that are connected in series. The circuit constant is the same. Therefore, after adjusting the adjustment circuit on the first surface or the second surface of the substrate as the first adjustment member or the second adjustment member for each adjustment circuit of each switching element and adjusting the adjustment circuit on the surface that is easy to adjust, Since the adjustment circuits of the remaining surfaces can be set to the same circuit constant, the adjustment efficiency of the adjustment circuit is improved.

  In the invention which concerns on Claim 3, the switching element for power conversion used with the power converter device of this invention comprises a polyphase inverter, and has the switching element for upper and lower arms for every phase, and adjustment in each switching element The circuit constants of the circuits are the same. And the adjustment member which comprises any adjustment circuit among several switching elements is arrange | positioned on a 2nd surface as a 1st adjustment member, and the remaining adjustment members are arrange | positioned on a 1st surface as a 2nd adjustment member. Therefore, any one of the adjustment circuits can be arranged on a surface that can be easily adjusted, and the rest can be adjusted to the same adjustment circuit, so that the switching speed of the gate signal can be adjusted efficiently.

  In the invention which concerns on Claim 4, the adjustment member of the adjustment circuit of the switching element for any one phase among polyphases is made into the 1st adjustment member, and it arrange | positions on the 2nd surface of a board | substrate. And the adjustment member of the adjustment circuit for the remaining phases is arranged on the first surface of the substrate. Thereby, the circuit constants of the one-phase adjustment circuit can be adjusted in terms of easy adjustment, and then the remaining phases can be set to the same circuit constant, so that adjustment of the adjustment circuit for each phase can be performed efficiently.

  In the invention according to claim 5, the switching elements for the upper and lower arms are arranged in parallel with the switching elements for the upper arms of the respective phases on the substrate in the same manner as the circuit connection, and correspond to the direction perpendicular to the parallel direction ( The lower arm switching elements (connected in series) are arranged, and the surge voltage absorbing capacitors are arranged in parallel with each other being arranged in parallel. Therefore, there are a phase close to and a phase far from the surge voltage absorbing capacitor. Therefore, the adjustment member of the adjustment circuit of the phase physically distant from the surge voltage absorbing capacitor is arranged on the second surface as the first adjustment member, so that the switching characteristic in the place where the surge voltage absorption effect is the lowest in principle can be obtained. Since it can be evaluated, it is possible to adjust the maximum surge voltage generated during switching. Further, by effectively using both sides of the substrate, high-density mounting is achieved, and the size of the substrate can be reduced.

  In the invention according to claim 6, since the adjustment circuit includes a turn-on resistor and a turn-off resistor and is arranged on the second surface as the first adjustment member, the switching speed of the gate signal can be easily adjusted. It is possible to efficiently adjust the switching operation (switching speed of the gate signal) of the switching element for power conversion in consideration of the installation environment and operating conditions of the device.

  In the invention according to claim 7, the adjustment circuit includes an adjustment capacitor in addition to the turn-on resistance and the turn-off resistance, and is arranged on the second surface as the first adjustment member, thereby adjusting the switching speed of the gate signal. Therefore, the switching of the power conversion switching element can be adjusted in consideration of the installation environment and operating conditions of the power conversion device.

  In the invention according to claim 8, any of the adjustment members connected in parallel among the adjustment members constituting the adjustment circuit that adjusts the switching speed of the gate signal of the switching element for power conversion is used as the first adjustment member. Since it arrange | positions to a 2nd surface, a minimum adjustment member can be arrange | positioned to the 2nd surface with little space.

  In the invention according to claim 9, the upper arm switching elements are arranged in parallel on the substrate as in the case of circuit connection, and the upper arm switching elements correspond to the direction perpendicular to the parallel direction ( The lower arm switching elements (connected in series) are arranged, and the surge voltage absorbing capacitors are arranged in parallel with each other being arranged in parallel. Therefore, there are a phase close to and a phase far from the surge voltage absorbing capacitor. Therefore, one of the adjustment members connected in parallel among the adjustment members of the adjustment circuit physically distant from the surge voltage absorbing capacitor is arranged on the second surface as the first adjustment member. Thereby, the minimum adjustment member can be arrange | positioned on the surface which is easy to adjust, and it can be set as the voltage converter which can fully acquire the effect of the capacitor | condenser for surge voltage absorption.

  In the invention which concerns on Claim 10, since it becomes easy to adjust the switching speed of a gate signal by arrange | positioning turn-on resistance and turn-off resistance as a 1st adjustment member among the adjustment members on the 2nd surface, It is possible to efficiently adjust the switching operation of the power conversion switching element in consideration of the installation environment and operating conditions.

  In the invention according to claim 11, the switching speed of the gate signal can be adjusted by disposing the adjusting capacitor on the second surface as the first adjusting member in addition to the turn-on resistance and the turn-off resistance in the adjusting circuit. Therefore, it is possible to efficiently adjust the switching of the switching element for power conversion in consideration of the installation environment and operating conditions of the power conversion device.

  In the invention which concerns on Claim 12, when the power converter device of this invention has a converter for step-up / step-down, the adjustment member of the switching element for converters for this step-up / step-down converter is provided on the second surface as the first adjustment member. Since it is disposed, it is possible to provide a power conversion device that easily adjusts the switching operation of the converter.

  Hereinafter, the present invention will be specifically described using embodiments.

(Embodiment 1)
FIG. 1 shows a circuit diagram of the power conversion device 1 according to the first embodiment. The power conversion device 1 according to the first embodiment includes a battery 11, a buck-boost converter 12, a motor generator MG1, a motor generator MG2, an MG1 inverter 13, an MG2 inverter 14, and a surge voltage absorbing capacitor 17.

  The battery 11 is connected to the buck-boost converter 12, supplies DC power to the buck-boost converter 12, and stores DC power regenerated from the buck-boost converter 12.

  The step-up / step-down converter 12 boosts the DC power supplied from the battery 11 and outputs the boosted DC power to inverters 13 and 14 described later, and steps down the DC power output from the inverters 13 and 14 and outputs it to the battery 11. The buck-boost converter 12 includes a capacitor 123, a reactor 124, an upper arm switching element 121 that is a high-voltage side semiconductor element, a lower arm switching element 122 that is a high-voltage GND side semiconductor element, and diodes D1 and D2. One end of the capacitor 123 and the reactor 124 is connected to the positive electrode side of the battery 11, and the other end of the capacitor 123 and the emitter terminal of the lower arm switching element 122 are connected to the negative electrode side. The upper arm switching element 121 and the lower arm switching element 122 are connected in series, and the other end of the reactor 124 is between them, that is, the emitter terminal of the upper arm switching element 121 and the collector of the lower arm switching element 122. Connected to the terminal. The collector terminal of the switching element for the upper arm is connected to one end side of an MG1 inverter 13 and an MG2 inverter 14 which will be described later. The emitter terminal of the lower arm switching element 122 is connected to the other ends of the MG1 inverter 13 and the MG2 inverter 14. Between the collectors and emitters of the switching elements 121 and 122, diodes D1 and D2 that flow current from the emitter side to the collector side are arranged.

  Motor generator MG1 and motor generator MG2 are connected to MG1 inverter 13 and MG2 inverter 14, respectively, and are driven by electric power supplied from battery 11. When working as a generator, AC power is output to inverters 13 and 14 connected to each.

  The MG1 inverter 13 and the MG2 inverter 14 are connected in parallel, convert the DC power boosted by the buck-boost converter 12 into a three-phase AC, and output it to the motor generators MG1 and MG2. When motor generators MG1 and MG2 function as generators, AC power output from motor generators MG1 and MG2 is converted to DC and output to step-up / down converter 12.

  The MG1 inverter 13 includes a U phase 131, a V phase 132, and a W phase 133, and the U phase 131, the V phase 132, and the W phase 133 are connected to the step-up / down converter 12 in parallel. In the U-phase 131, a switching element 134 for the upper arm of the semiconductor element on the high voltage side and a switching element 135 for the lower arm of the semiconductor element on the high voltage GND side are connected in series. Similarly, an upper arm switching element 136 and a lower arm switching element 137 are connected in series in the V phase, and an upper arm switching element 138 and a lower arm switching element 139 are connected in series in the W phase. And between the collector-emitter of each switching element 134-139, the diodes D3-8 which flow an electric current from the emitter side to the collector side are each connected. An intermediate point of each phase is connected to each phase end of each phase coil (not shown) of motor generator MG1.

  The MG2 inverter 14 includes a U phase 141, a V phase 142, and a W phase 143, and the U phase 141, the V phase 142, and the W phase 143 are connected in parallel to the step-up / down converter 12 and the MG1 inverter 14. . In the U-phase 141, a switching element 144 for the upper arm of the semiconductor element on the high voltage side and a switching element 145 for the lower arm of the semiconductor element on the high voltage GND side are connected in series. Similarly, the upper arm switching element 146 and the lower arm switching element 147 are connected in series in the V phase, and the upper arm switching element 148 and the lower arm switching element 149 are connected in series in the W phase. And between the collector-emitter of each switching element 144-149, the diodes D9-14 which flow an electric current from the emitter side to the collector side are each connected. An intermediate point of each phase is connected to each phase end of each phase coil (not shown) of motor generator MG2. Here, the switching elements included in the step-up / down converter 12 and the inverters 13 and 14 use power elements such as IGBTs and MOSFETs.

  The power converter 1 of the present invention boosts DC power of the battery 11 with a step-up / down converter 12 and converts it into three-phase AC with inverters 13 and 14 to drive motor generators MG1 and MG2. When motor generators MG 1 and MG 2 function as generators, AC power output from motor generators MG 1 and MG 2 is converted into DC power by inverters 13 and 14, stepped down by step-up / down converter 12, and regenerated in battery 11. Is done.

  In the power conversion device 1 of the present invention, the upper and lower arm switching elements 134 to 139 and 144 to 149 used in the step-up / down converter 12 and the inverters 13 and 14 have one switching element as shown in FIG. Each of the adjustment circuits 3 is arranged. Normally, the adjustment circuit 3 is composed of the same number of elements for each phase or for each switching element among the three phases for driving the motor generator. For example, in a simple bench test using a single-phase chopper circuit, surge / loss adjustment is performed for one of the three phases, and the adjustment circuit 3 for the adjusted one phase is changed to the other phase for the remaining phases. Will be implemented. Therefore, the switching element 135 for the lower arm of the U-phase 131 of the inverter 13 for MG1 and the adjustment circuit 3 will be described.

  The gate terminal of the switching element 135 is connected to the drive PWM signal output unit 4 that transmits a control signal for controlling the current between the main terminals (between the collector and the emitter), the gate drive circuit IC5, and the adjustment circuit 3. Yes. Moreover, the power supply part 6 as a drive source of a gate terminal is also required. The gate drive circuit IC5 includes a circuit for adjusting the switching speed of the gate signal input to the gate terminal, and the dead time necessary for the switching timing is set so that the upper and lower arm switching elements 134 and 135 are not simultaneously turned ON. It is adjusted to be set. In order to use the switching element, the drive PWM signal output unit 4, the gate drive circuit IC5, and the power supply unit 6 are indispensable. For adjustment, an adjustment circuit 3 composed of a resistor or the like is connected to the gate terminal.

  FIG. 2 is an equivalent circuit diagram of the switching element 135 and a circuit for driving the switching element 135. The collector terminal of the switching element 135 is connected to the emitter terminal of the upper arm switching element 134. A state in which the collector terminal is connected to the 650 V main power supply is also shown. Capacitors Ccg and Cge between the collector and gate and between the emitter and gate of the switching element 135 indicate so-called parasitic capacitance. The emitter is connected to a line connected to a high voltage GND (reference potential). The drive PWM signal output unit 4 is connected to the gate drive circuit IC5 and outputs a PWM signal. In the gate drive circuit IC5, an N-FET 51 (N channel MOS-FET) and a P-FET 52 (P channel MOS-FET) are connected in series, a gate terminal is connected to the drive PWM signal output unit 4 side, and the N-FET 51 is connected. Are connected to the power source 6 and the source terminal of the P-FET 52 is connected to a line connected to GND. The source terminal of the N-FET 51 and the drain terminal of the P-FET 52 are connected in series, and the adjustment circuit 3 is disposed between the series connections.

  The adjustment circuit 3 includes a turn-on resistor R1 and a turn-off resistor R2 connected in series between the source terminal of the N-FET 51 and the drain terminal of the P-FET 52 of the gate drive circuit IC5. One end is connected between the turn-on resistor R1 and the turn-off resistor R2, and the other end has an adjustment capacitor C connected to a line connected to GND. Furthermore, one end is connected to the gate terminal of the switching element 135, and the other end includes an adjusting resistor R3 connected between the turn-on resistor R1 and the turn-off resistor R2 and one end of the adjusting capacitor C. The turn-on resistor R1 and the turn-off resistor R2 are indispensable elements for adjusting the switching speed of the gate signal, and the adjusting capacitor C and the adjusting resistor R3 may not be arranged. Since the adjustment capacitor C is arranged to change the rising or falling time of switching, the switching speed can be adjusted. The adjustment resistor R3 is necessary to eliminate the influence of different circuit wiring resistance when a plurality of switching elements 135 for the lower arm for one phase are provided in parallel. Not necessary.

  As shown in FIG. 3, the power conversion device 1 of the present invention has each component such as a switching element and a gate drive circuit IC disposed on both surfaces (first surface 71, second surface 72) of the substrate 7, and solder Etc. are electrically connected. In the power conversion device 1 according to the present invention, the element bodies 80 of the switching elements 134 to 139 and 144 to 149 are positioned on the first surface 71 side of the substrate 7, and a part of the terminals is connected to the second surface from the first surface 71 side. 72 penetrates to the second surface 72 and is fixed to the second surface 72 by local flow or laser soldering. An IGBT (insulated gate bipolar transistor) or the like is used as a switching element disposed on the substrate 7. As shown in FIG. 4, in this embodiment, the so-called power card 8 in which the element body 80 of the switching element and the temperature detection diode of the switching element are manufactured in one card shape is located on the first surface 71. . The power card 8 has a switching element gate terminal 81, an emitter terminal 82, a sense emitter terminal 83, a diode anode terminal 84, and a cathode terminal 85, which are connected in series from one side, and from the opposite side, A collector terminal 86 and an emitter terminal 87 are exposed. Five terminals of the power card 8 are penetrated from the first surface 71 side and electrically connected to the second surface 72, and the power card 8 is located on the first surface 71 as shown in FIG. Therefore, in the first embodiment, on the first surface 71 of the substrate 7, two power cards 8 in the direction in which the five terminals are arranged in series, and seven in the direction perpendicular to the series direction of the terminals, a total of 14 powers. Card 8 stands.

  Returning to FIG. 3, on the second surface 72, there is a mounting prohibited area 73 in which other elements cannot be mounted for each power card around each terminal. Note that the terminal may be fixed to the board 7 by using a connector instead of solder in advance and fixing the terminal by fitting.

  On the second surface 72, the terminal of the switching element 121 for the upper arm of the buck-boost converter 12 is positioned on the upper left side of the drawing, and the terminal of the switching element 122 for the lower arm is positioned below it. The terminals of the upper arm switching elements 134, 136 and 138 on the right side of the MG1 inverter 13 and the terminals of the lower arm switching elements 135, 137 and 139 on the lower side are the U-phase 131 and V from the left to the right. The phase 132 and the W phase 133 are arranged in this order. The terminals of the upper arm switching elements 144, 146 and 148 are located on the right side of the W phase 133, and the terminals of the lower arm switching elements 145, 147 and 149 are located on the lower side of the U phase 141 and V phase 142. And W phase 143 in this order.

  Then, the adjustment members (turn-on resistance R1, turn-off resistance R2, adjustment capacitor C, adjustment resistance R3) of the adjustment circuit 3 for each switching element are arranged on the first surface 71 and the second surface 72. A second adjustment member 74 is disposed on the first surface 71 of the substrate 7, and a first adjustment member 75 is disposed on the second surface 72. The first adjustment member 75 is an adjustment member of the adjustment circuit 3 of the upper and lower arm switching elements 134 to 137 of the U phase 131 and V phase 132 of the motor generator MG1 inverter 13 and the lower arm switching element 139 of the W phase 133. Adjustment member of adjustment circuit 3, adjustment member of adjustment circuit 3 of upper and lower arm switching elements 144 to 147 of U phase 141 and V phase 142 of MG2 inverter 14, adjustment circuit 3 of lower arm switching element 149 of W phase 143 The adjusting member is included. The second adjustment member 74 is an adjustment member of the adjustment circuit 3 of the switching elements 121 and 122 for the upper and lower arms of the buck-boost converter 12, and a switching element for the upper arms of the W phases 133 and 143 of the inverter 13 for MG1 and the inverter 14 for MG2. The adjustment members of the adjustment circuit 3 of 138 and 148 are included.

  The adjusting member constituting the adjusting circuit 3 of each switching element is disposed near the corresponding switching element. The turn-on resistor R1, the turn-off resistor R2, the adjustment capacitor C, and the adjustment resistor R3 are arranged in series in the same direction as the series direction of the terminals of the power card 8, and are arranged on the left side or the right side of the corresponding switching element. Therefore, on the second surface 71, the respective adjustment members are arranged on the left side of the terminals of the switching elements 121 and 122 of the buck-boost converter 12 and on the right side of the W phases 133 and 143. Similarly, on the first surface 71, an adjusting member is disposed between the power cards 8 that stand up close to each switching element.

  According to the voltage conversion device 1 of the present invention, the second adjustment member 74 is disposed on the first surface 71 of the substrate 7, and the first adjustment member 75 is disposed on the second surface 72, thereby effectively using the two surfaces of the substrate 7. It is possible to suppress the expansion of the substrate 7 and to reduce the size. Since the adjustment circuit 3 for the switching elements of the three-phase AC inverters 13 and 14 can be mounted with the same constant adjustment member for each phase, and the upper and lower arms can be provided with the same constant adjustment member. The adjustment member of the adjustment circuit 3 for the switching element of either of the upper and lower arms of the phase is arranged on the second surface 72 as the first adjustment member 75. Accordingly, the second adjustment member 74 of the first surface 71 on which the power card 8 including the element main body 80 of the switching element stands can be replaced on the substrate 7 in order to perform adjustments such as changing the resistance value. First, since the switching speed of the gate signal of one switching element can be adjusted by replacing the first adjusting member 75 of the second surface 72, the switching speed of the gate signal can be adjusted efficiently. And after adjusting one, the adjustment circuit 3 of the other switching element uses the same resistance value and other adjustment members so that the switching speed of the same gate signal is also used. It can be an inverter.

(Embodiment 2)
Embodiment 2 of the present invention will be specifically described. The second embodiment has basically the same configuration and the same function and effect as the first embodiment. The following description will focus on the different parts.

  The power conversion device 1 according to the second embodiment is different from the first embodiment in the first adjustment member 75 and the second adjustment member 74. As shown in FIG. 6, the first adjustment member 75 disposed on the second surface 72 includes an adjustment member of the adjustment circuit 3 of the upper and lower arm switching elements 122 and 122 of the buck-boost converter 12 and a U of the inverter 13 for MG1. The adjustment member of the adjustment circuit 3 of the switching elements 134 and 135 for the upper and lower arms of the phase 131 and the adjustment member of the adjustment circuit 3 of the switching elements 148 and 149 for the upper and lower arms of the W phase 143 of the inverter 14 for MG2. The second adjustment member 74 disposed on the first surface 71 is an adjustment member for the adjustment circuit 3 of the remaining switching elements.

  In the power conversion device 1 of the present invention, the constituent elements such as the switching element and the adjustment circuit 3 are arranged on the substrate 7 based on the circuit diagram shown in FIG. 1, and therefore the inverter 13 for MG1 is used for the U-phase 131 and MG2. The W phase 143 of the inverter 14 is the farthest phase from the surge voltage absorbing capacitor 17 connected in parallel to the MG1 inverter 13 and the MG2 inverter 14. Therefore, by arranging the adjusting members for the U phase 131 and the W phase 143 on the second surface 72 and close to the surge voltage absorbing capacitor 17, the switching characteristics of the U phase 131 and the W phase 143 having the lowest surge voltage absorption effect. Therefore, the maximum surge voltage generated during switching can be adjusted.

(Embodiment 3)
Embodiment 3 of the present invention will be specifically described. The third embodiment basically has the same configuration and the same function and effect as the first embodiment. The following description will focus on the different parts.

  The power conversion device 1 according to the third embodiment is different from the first embodiment in the first adjustment member 75 and the second adjustment member 74. As shown in FIG. 7, the first adjustment member 75 disposed on the second surface 72 includes an adjustment member of the adjustment circuit 3 of the upper and lower arm switching elements 122 and 122 of the buck-boost converter 12 and a W of the inverter 13 for MG1. Among the adjustment members of the adjustment circuit 3 of the switching element 138 for the upper arm of the phase 133, among the adjustment members of the adjustment circuit 3 of the switching element 148 for the upper arm 143 of the W phase 143 of the inverter 14 for turn-on resistance R1 and turn-off resistance R2, MG2. These are turn-on rectification resistor R1 and turn-off resistor R2. The second adjustment member 74 disposed on the first surface 71 is the remaining adjustment member.

  Adjustment members important for adjusting the switching speed of the gate signals of the switching elements 134 to 139 and 144 to 149 are the turn-on resistance R1 and the turn-off resistance R2. Therefore, the switching element is arranged by arranging only one of the turn-on / off resistors R1 and R2, which are important adjustment members, on the second surface 72, which is one of the switching elements of the MG1 inverter 13 and the MG2 inverter 14. The gate signal switching speed can be adjusted sufficiently. Therefore, if the adjustment members for the respective switching elements are arranged so as to have the same constant after the adjustment in the trial production stage, the voltage conversion device can be realized, so that the switching speed of the gate signal can be adjusted efficiently.

(Modification of Embodiment 3)
This modification basically has the same configuration and the same function and effect as those of the third embodiment. The following description will focus on the different parts.

  The first adjustment member 75 disposed on the second surface 72 includes an adjustment member for the adjustment circuit 3 for the upper and lower arm switching elements 122 and 122 of the buck-boost converter 12 and an upper arm switching element for the W phase 133 of the MG1 inverter 13. Among the adjustment members of the adjustment circuit 3 of 138, one of the turn-on resistance R1 and one of the turn-off resistance R2, and the turn-on resistance of the adjustment members of the adjustment circuit 3 of the switching element 148 for the upper arm of the W-phase 143 of the inverter 14 for MG2. One of R1 and one of turn-off resistors R2. In the adjustment circuit 3 of each switching element, as shown in FIG. 2, a plurality of resistors may be connected in parallel for the turn-on / off resistors R1 and R2, and these resistors are basically the same. The resistance value is used. However, it is also possible to arrange one or two of the resistors connected in parallel on the second surface 72 that is easy to adjust, and adjust only the resistance value arranged on the second surface 72 to adjust the switching speed of the gate signal. it can. From experience, the resistance value that adjusts the switching speed of the gate signal can be predicted to some extent, so it is possible to adjust the date voltage efficiently by arranging some on the surface that is easy to adjust for fine adjustment. .

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, the terminals of the step-up / down converter 12, the MG1 inverter 13, the terminals of the power conversion switching elements of the MG2 inverter 14 and the adjustment circuit 3 on the second surface 72 of the substrate 7 are arranged for the buck-boost converter 12, MG1, The order for MG2, the step-up / step-down converter, and MG1 may be used instead of the order for MG2.

1 is a circuit diagram of a power conversion device 1 according to a first embodiment. 3 is an equivalent circuit diagram of a gate signal adjustment circuit of a switching element used in the power conversion device 1 of Embodiment 1. FIG. It is a schematic diagram of the board | substrate with which the component which comprises the power converter device 1 of this Embodiment 1 is arrange | positioned. It is the perspective view which represented typically the power card 8 containing the element main body 80 of the switching element used with the power converter device 1 of this Embodiment 1. FIG. FIG. 2 is a perspective view schematically showing the power conversion device 1 of Embodiment 1 as viewed from the first surface 71 side of the substrate 7. It is a schematic diagram of the board | substrate with which the component which comprises the power converter device 1 of this Embodiment 2 is arrange | positioned. It is a schematic diagram of the board | substrate with which the component which comprises the power converter device 1 of this Embodiment 3 is arrange | positioned.

Explanation of symbols

1: power converter, 11: battery, 12: buck-boost converter,
13: MG1 inverter, 14: MG2 inverter,
17: Surge voltage absorbing capacitor,
121, 122, 134 to 139, 144 to 149: switching elements,
123: Capacitor, 124: Reactor,
3: adjustment circuit, 4: drive PWM signal output unit,
5: Gate drive circuit IC, 51: N-FET, 52: P-FET,
6: Power supply unit
7: Board, 71: First surface, 72: Second surface, 73: Mounting prohibited area,
74: second adjustment member, 75: first adjustment member,
8: Power card, 80: Element body, 81: Gate terminal, 82: Emitter terminal,
83: sense emitter terminal, 84: anode terminal, 85: cathode terminal,
86: Collector terminal, 87: Emitter terminal,
D1-D14: Diode, MG1, MG2: Motor generator,
R1: Turn-on resistance, R2: Turn-off resistance, C: Adjustment capacitor, R3: Adjustment resistance

Claims (12)

A substrate,
An element main body located on the first surface side of the substrate, and an electrode body that is electrically connected to the element main body and penetrates from the first surface side of the substrate to a second surface side that is the back surface side of the first surface. And a gate terminal that performs a switching operation according to a gate signal that is input, and a switching element for power conversion comprising:
An adjustment circuit including an adjustment member mounted on the substrate so as to be electrically connected to the gate terminal; and an adjustment circuit for adjusting a switching operation of the power conversion switching element by adjusting a switching speed of a gate signal;
A power conversion device comprising:
The adjustment member comprises a plurality of
A first adjustment member that is at least one of the plurality of adjustment members is disposed on the second surface of the substrate;
The remaining second adjustment member among the plurality of adjustment members is disposed on the first surface of the substrate. The switching element for power conversion constitutes an inverter and includes a switching element for the upper arm on the high voltage side and a switching element for the lower arm on the high voltage GND side that are connected in series.
The circuit constants of the adjustment circuit in the upper arm switching element and the lower arm switching element are the same,
The first adjustment member is the adjustment member constituting the adjustment circuit of any of the plurality of switching elements,
The power conversion device according to claim 1, wherein the second adjustment member is the adjustment member constituting the remaining adjustment circuit among the plurality of switching elements. The power conversion switching element constitutes a multi-phase inverter, and in each phase connected in parallel, includes a high-voltage side upper arm switching element and a high-voltage GND side lower arm switching element connected in series,
The circuit constants of the adjustment circuit in the upper arm switching element and the lower arm switching element are the same,
The first adjustment member is the adjustment member constituting the adjustment circuit of any of the plurality of switching elements,
The power conversion device according to claim 1, wherein the second adjustment member is the adjustment member constituting the remaining adjustment circuit among the plurality of switching elements. The first adjustment member is the adjustment member that constitutes the adjustment circuit of the switching element that constitutes one of the polyphases,
4. The power conversion device according to claim 3, wherein the second adjustment member is the adjustment member that constitutes the adjustment circuit of the switching element that constitutes the remaining phase of the polyphase. 5. A surge voltage absorbing capacitor that is connected in parallel to the multiphase inverter and arranged in parallel with the switching element for power conversion arranged in parallel for each phase on the substrate,
The said 1st adjustment member contains the said adjustment member which comprises the said adjustment circuit of the said switching element for power conversion of the phase arrange | positioned in the position farthest from the said capacitor | condenser for surge voltage absorption on the said board | substrate. 4. The power conversion device according to 4.   6. The power conversion device according to claim 2, wherein the adjustment circuit includes a turn-on resistance and a turn-off resistance of the switching element for power conversion, and other elements.   The power converter according to claim 6, wherein the adjustment circuit further includes an adjustment capacitor. The adjustment circuit includes a plurality of adjustment members that adjust the switching speed of the gate signal of one switching element for power conversion and are connected in parallel.
The first adjustment member is one of the plurality of adjustment members constituting one adjustment circuit,
2. The power conversion device according to claim 1, wherein the second adjustment member is the remaining of the plurality of adjustment members constituting one of the adjustment circuits. The switching element for power conversion constitutes a multiphase inverter, and in each phase connected in parallel, includes a switching element for the upper arm on the high voltage side and a switching element for the lower arm on the high voltage GND side, which are connected in series.
The power converter further includes a surge voltage absorbing capacitor that is connected in parallel to the multiphase inverter and arranged in parallel with the power conversion switching element arranged in parallel for each phase on the substrate,
The first adjustment member is any one of the plurality of adjustment members constituting the adjustment circuit of the power conversion switching element in a phase disposed on the substrate at a position farthest from the surge voltage absorbing capacitor. Including
The second adjustment member is the rest of the plurality of adjustment members constituting the adjustment circuit of the switching element for power conversion of a phase arranged at a position farthest from the surge voltage absorbing capacitor on the substrate. The power converter of Claim 8 containing. The adjustment circuit includes a turn-on resistance and a turn-off resistance of the switching element for power conversion, and other elements,
The first adjustment member includes at least the turn-on resistance and the turn-off resistance,
The power conversion device according to claim 1, wherein the second adjustment member includes a part of the other element. The adjustment circuit further includes an adjustment capacitor,
The power conversion device according to claim 10, wherein the first adjustment member further includes the adjustment capacitor. The power conversion switching element further includes a converter switching element that constitutes a step-up / step-down converter that outputs a boosted DC voltage to the inverter and steps down the DC voltage output from the inverter,
The power converter according to any one of claims 1 to 11, wherein the first adjustment member includes the adjustment member of the converter switching element.

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