CN209435132U - Power inverter - Google Patents

Abstract

The utility model provides a kind of power inverter, not only can ensure that necessary insulation distance, but also can make the compact in size of power inverter entirety.Power inverter includes: switch element, is configured with the 2nd electrode of the 1st electrode and input drive signal in wherein one side；1st substrate, the 2nd conductive layer including 1st conductive layer opposite with the 1st electrode, the 1st electric insulation layer and the opposite side configured across the 1st electric insulation layer in the 1st conductive layer；And connecting line, connect the 2nd electrode and driving signal input unit, the 1st electrode of the switch element is electrically connected to the 1st conductive layer of the 1st substrate, the end of the driving signal input unit side in the 1st conductive layer compared to the driving signal input unit side in the 2nd conductive layer end and be located remotely from the side of the driving signal input unit.

Description

Power inverter

Technical field

The utility model relates to a kind of power inverters.

Background technique

Conventionally, there is known a kind of includes hybrid power power control unit (hybrid power control unit) Hybrid vehicle (referring for example to patent document 1).The hybrid power power control unit includes: power module, and inside is matched It is equipped with the chip (chip) that heat is generated in movement；And cooler, the heat from power module is cooled down.Described mixed It closes in electrical source of power control unit, equipped with the chip weld interface material for being engaged chip with power module, is formed internal Solder layer.Power module and cooler are bonded and form external solder layer by the weld interface material of more low temperature.

[existing technical literature]

[patent document]

Patent document 1: No. 2017/0096066 specification of U.S. Patent Application Publication No.

Utility model content

[utility model problem to be solved]

However, not being dedicated to sufficiently how constituting the wherein one side to switch element in the hybrid vehicle The electrical connection of the 1st electrode component and the company that is connected with the 2nd electrode of the input drive signal of the wherein one side of switch element Wiring not only can ensure that necessary insulation distance, but also can make power module integral miniaturization.Thus, the hybrid vehicle In, the whole not yet sufficiently miniaturization of power module.

In view of described problem, the purpose of this utility model is to provide a kind of power inverters, both can ensure that necessary Insulation distance, and the compact in size of power inverter can be made.

[technical means to solve problem]

(1) power inverter of an embodiment of the utility model includes: switch element, and one side is configured with the wherein 2nd electrode of 1 electrode and input drive signal；1st substrate, absolutely including 1st conductive layer opposite with the 1st electrode, the 1st electricity 2nd conductive layer of edge layer and the opposite side configured across the 1st electric insulation layer in the 1st conductive layer；And connection Line, connects the 2nd electrode and driving signal input unit, and the 1st electrode of the switch element is electrically connected to the 1st base It is led compared to the described 2nd the end of the 1st conductive layer of plate, the driving signal input unit side in the 1st conductive layer The end of driving signal input unit side in electric layer and the side for being located remotely from the driving signal input unit.

(2) in power inverter described in (1), can also be, in the another side of the switch element, configured with the 3 electrodes, the power inverter further include the 2nd substrate, and the 2nd substrate includes 3rd conduction opposite with the 3rd electrode 4th conductive layer of layer, the 2nd electric insulation layer and the opposite side configured across the 2nd electric insulation layer in the 3rd conductive layer, 3rd electrode is electrically connected to the 3rd conductive layer, the end of the driving signal input unit side in the 3rd conductive layer Compared to the driving signal input unit side in the 4th conductive layer end and be located remotely from the driving signal input unit Side.

It (3) can also be that the driving signal in the 1st conductive layer is defeated in power inverter described in (2) Enter the end of the end of portion side compared to the driving signal input unit side in the 3rd conductive layer and is located remotely from the drive The side of dynamic signal input part.

(4) power inverter described in any one of described (1) to (3) can also further include: spacer portion (spacer), tool The another side for having the wherein one side for being electrically connected to the 1st conductive layer and being electrically connected to the 1st electrode, the 1st conductive layer The end with the amount of thickness of the 1st conductive layer more than, compared to the driving signal input unit in the spacer portion The end of side and be located at driving signal input unit side.

[effect of utility model]

In power inverter described in (1), the 1st substrate includes the 1st conductive layer, the 1st electric insulation layer and across the 1 electric insulation layer and the 2nd conductive layer of opposite side configured in the 1st conductive layer.1st conductive layer is electrically connected to configuration in switch element Wherein one side the 1st electrode.Driving signal input unit is connected to the wherein one side for being configured at switch element by connecting line The 2nd electrode.The end of driving signal input unit side in 1st conductive layer is inputted compared to the driving signal in the 2nd conductive layer The end of portion side and the side for being located remotely from driving signal input unit.

Therefore, in power inverter described in described (1), compared to the driving signal input unit side in the 1st conductive layer End and the 2nd conductive layer in driving signal input unit side end be located at away from driving signal input unit be equidistant feelings Condition not only can ensure that the insulation distance between the 1st conductive layer and connecting line, but also can make the compact in size of power inverter.In detail For thin, the size of power inverter can be made to minimize on the thickness direction of switch element.

That is, not only can ensure that necessary insulation distance, but also electrical power conversion can be made in power inverter described in (1) Device it is compact in size.

In power inverter described in (2), the 2nd substrate includes the 3rd conductive layer, the 2nd electric insulation layer and across the 2 electric insulation layers and the 4th conductive layer of opposite side configured in the 3rd conductive layer.3rd conductive layer is electrically connected to configuration in switch element Another side the 3rd electrode.The end of driving signal input unit side in 3rd conductive layer is compared to the driving in the 4th conductive layer The end of signal input part side and the side for being located remotely from driving signal input unit.

Therefore, in power inverter described in described (2), compared to the driving signal input unit side in the 3rd conductive layer End and the 4th conductive layer in driving signal input unit side end be located at away from driving signal input unit be equidistant feelings Condition not only can ensure that the insulation distance between the 3rd conductive layer and connecting line, but also can make the compact in size of power inverter.In detail For thin, the size of power inverter can be made to minimize in the width direction of switch element.

In power inverter described in (3), the end of the driving signal input unit side in the 1st conductive layer compared to The end of driving signal input unit side in 3rd conductive layer and the side for being located remotely from driving signal input unit.

Therefore, in power inverter described in described (3), compared to the driving signal input unit side in the 1st conductive layer End and the 3rd conductive layer in driving signal input unit side end be located at away from driving signal input unit be equidistant feelings Condition, it can be ensured that the insulation distance between the 1st conductive layer and connecting line.

Power inverter described in (4) further includes the spacer portion for being electrically connected the 1st conductive layer and the 1st electrode.It is described (4) in the power inverter described in, the end of the driving signal input unit side in the 1st conductive layer is with the thickness of the 1st conductive layer It is more than amount, compared to the driving signal input unit side in spacer portion end and be located at driving signal input unit side.

Therefore, in power inverter described in described (4), the diffusion for being able to suppress the heat of switch element generation is hindered The possibility hindered.

Detailed description of the invention

Fig. 1 is an example for indicating the vertical section schematically of major part of the power inverter of the 1st embodiment Figure.

Fig. 2 is the figure for only extracting the switch element in Fig. 1 and indicating.

Fig. 3 is the figure for the feature for illustrating the power inverter of the 1st embodiment.

Fig. 4 is the vertical sectional view of the major part of the power inverter of comparative example.

Fig. 5 is the exploded perspective view of an example of the power inverter of the 2nd embodiment.

Fig. 6 (A) and Fig. 6 (B) is the vertical schematically for indicating the major part of power inverter of the 2nd embodiment The figure of an example of section.

Fig. 7 is the figure for only extracting the low side switch element in Fig. 6 (B) and indicating.

Fig. 8 is the vertical section schematically for indicating the major part of the high side of power inverter of the 3rd embodiment An example figure.

Fig. 9 is the vertical section schematically for indicating the major part of the downside of power inverter of the 3rd embodiment An example figure.

Figure 10 is one of vehicle for indicating power inverter of applicable 1st embodiment to the 3rd embodiment The figure of an example.

[explanation of symbol]

1: power inverter

UH: switch element

UHA: face

UHA1: electrode

UHB: face

UHB1: electrode

UHB2: electrode

UL: switch element

ULA: face

ULA1: electrode

ULB: face

ULB1: electrode

ULB2: electrode

SA: substrate

SA1: electric insulation layer

SA2A: conductive layer

SA2A1: end

TSA2A: thickness

X: overhang

PSA: upper end position

SA2B: conductive layer

SA2B1: end

SA3: conductive layer

SA3A: end

SA3B: end

SB: substrate

SB1: electric insulation layer

SB2: conductive layer

SB2A: end

SB2B: end

SB3A: conductive layer

SB3A1: end

SB3B: conductive layer

SB3B1: end

SH: driving signal input unit

SL: driving signal input unit

SPUH: spacer portion

SUH1: end

PSP: upper end position

SPUL: spacer portion

SPUL1: end

WH: connecting line

WL: connecting line

10: vehicle

Specific embodiment

Hereinafter, being explained with reference to the embodiment of the power inverter of the utility model.

The 1st embodiment > of <

Fig. 1 is an example for indicating the vertical section schematically of major part of the power inverter 1 of the 1st embodiment Figure.Fig. 2 is the figure for only extracting the switch element UH in Fig. 1 and indicating.Fig. 3 is for illustrating that the electric power of the 1st embodiment turns The figure of the feature of changing device 1.Fig. 4 is the vertical sectional view of the major part of the power inverter 1 of comparative example.

For Fig. 1 into example shown in Fig. 3, power inverter 1 includes switch element UH, substrate SA, substrate SB, driving letter Number input unit SH, spacer portion SPUH and connecting line WH.

Switch element UH be, for example, insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), Metal Oxide Semiconductor Field Effect Transistor (Metal Oxide Semi-conductor FieldEffect Transistor, MOSFET) or the like switch element.

As shown in Fig. 2, on wherein (upside of Fig. 2) face UHB of switch element UH, configured with electrode UHB1 and defeated Enter the electrode UHB2 of driving signal.On another (downside of Fig. 2) face UHA of switch element UH, it is configured with electrode UHA1.

For Fig. 1 into example shown in Fig. 3, substrate SA includes the conductive layer opposite with the electrode UHB1 of switch element UH SA2A, electric insulation layer SA1 and the conductive layer SA3 across the electric insulation layer SA1 opposite side configured in conductive layer SA2A.Switch The electrode UHB2 of element UH is for example connected to driving signal by the connecting line WH of closing line (bonding wire) or the like Input unit SH.The electrode UHB1 of switch element UH is electrically connected to substrate SA's via spacer portion SPUH is formed by with electric conductor Conductive layer SA2A.

For Fig. 1 into example shown in Fig. 3, substrate SB includes the conductive layer opposite with the electrode UHA1 of switch element UH SB3A, electric insulation layer SB1 and the conductive layer SB2 across the electric insulation layer SB1 opposite side configured in conductive layer SB3A.Switch The electrode UHA1 of element UH is electrically connected to the conductive layer SB3A of substrate SB.

Substrate SA and substrate SB is respectively, for example, directly to cover copper (Direct Copper Bonding, DCB) substrate.That is, DCB substrate be include ceramic substrate and be located at ceramic substrate thickness direction two sides copper sheet and constitute.Two copper sheets are from thickness side To two sides sandwich ceramic substrate, and be electrically insulated by ceramic substrate.

In the outside (upside of Fig. 1) of substrate SA and the outside (downside of Fig. 1) of substrate SB, it is each configured with radiator (not shown) cools down switch element UH by this radiator.

Into example shown in Fig. 3, the electrode UHA1 of switch element UH is electrically connected to electric insulation layer SB1, conduction Fig. 1 The conductive layer SB3A of the substrate SB of layer SB3A and conductive layer SB2, but in other examples, it is electrically connected with the electrode UHA1 of switch element UH The object connect can not also have electric insulation layer SB1 etc electric insulation layer and conductive layer SB2 etc not with switch element UH's The conductive layer of electrode UHA1 electrical connection.

The driving signal input unit SH side (right side of Fig. 1 of the Fig. 1 into example shown in Fig. 3, in the conductive layer SA2A of substrate SA Side) conductive layer SA3 of the end SA2A1 compared to substrate SA in the side driving signal input unit SH (right side of Fig. 1) end SA3A, and it is located remotely from the side (left side of Fig. 1) of driving signal input unit SH.Therefore, shown in four-headed arrow as shown in figure 1, Insulation distance between the conductive layer SA2A and connecting line WH of substrate SA is in the width direction (right and left of Fig. 1 of switch element UH To) on ensured.

On the other hand, the side driving signal input unit SH in comparative example shown in Fig. 4, in the conductive layer SA2A of substrate SA The end SA2A1 on (right side of Fig. 4), with the side driving signal input unit SH (right side of Fig. 4) in the conductive layer SA3 of substrate SA It is equidistant that end SA3A, which is located in the width direction (left and right directions of Fig. 4) of switch element UH away from driving signal input unit SH, Place.Therefore, as shown in the four-headed arrow in Fig. 4, it is necessary to ensure on the thickness direction (up and down direction of Fig. 4) of switch element UH Insulation distance between the conductive layer SA2A and connecting line WH of substrate SA.Moreover, in comparative example shown in Fig. 4, due to spacer portion SPUH is thick, therefore the inductance Ls of power inverter 1 increases.

As described above, insulation of the Fig. 1 into example shown in Fig. 3, between the conductive layer SA2A and connecting line WH of substrate SA Distance ensured in the width direction (left and right directions of Fig. 1) of switch element UH, therefore compared to comparison shown in Fig. 4 Example, can make the size of the entirety of power inverter 1 small-sized on the thickness direction (up and down direction of Fig. 1) of switch element UH Change.Moreover, Fig. 1 is into example shown in Fig. 3, it can since spacer portion SPUH is thin compared to comparative example shown in Fig. 4 Inhibit the inductance Ls of power inverter 1.

That is, Fig. 1 into example shown in Fig. 3, both can ensure that it is exhausted between the conductive layer SA2A of substrate SA and connecting line WH Edge distance, but can comparative example more shown in Fig. 4 and make whole compact in size of power inverter 1.

Moreover, Fig. 1 into example shown in Fig. 3, can make the end SA3A of the conductive layer SA3 of substrate SA extend to driving Until the side signal input part SH (right side of Fig. 1), therefore it can ensure high cooling performance.

For Fig. 1 into example shown in Fig. 3, wherein (upside of Fig. 1) face of spacer portion SPUH is electrically connected to substrate SA's Conductive layer SA2A.Another (downside of Fig. 1) face of spacer portion SPUH is electrically connected to the electrode UHB1 of switch element UH.

As shown in figure 3, the end of the side driving signal input unit SH (right side of Fig. 3) in the conductive layer SA2A of substrate SA SA2A1 compared to the side driving signal input unit SH (right side of Fig. 3) in spacer portion SPUH end SPUH1 and be located at driving letter Number side input unit SH (right side of Fig. 3).That is, end of the end SA2A1 of the conductive layer SA2A of substrate SA compared to spacer portion SPUH Portion SPUH1 and it is prominent to driving signal input unit SH side (right side of Fig. 3).

By the wholwe-hearted of this creator the study found that if the end SA2A1 of the conductive layer SA2A of substrate SA is relative to interval The end SPUH1 of portion SPUH, the overhang towards the side driving signal input unit SH (right side of Fig. 3) it is too small, then thermal resistance will become Greatly, as a result, diffusion hot caused by switch element UH will receive obstruction.

Given this point, Fig. 1 is into example shown in Fig. 3, and the end SA2A1 of the conductive layer SA2A of substrate SA is relative to interval The end SPUH1 of portion SPUH, the overhang X towards the side driving signal input unit SH (right side of Fig. 3) be set to conductive layer The value of the thickness tSA2A or more of SA2A.That is, the end SA2A1 of the conductive layer SA2A of substrate SA is with the thickness of conductive layer SA2A TSA2A or more, end SPUH1 compared to spacer portion SPUH and be located at the side driving signal input unit SH (right side of Fig. 3).That is, Link the upper end position of the end SA2A1 of the upper end position PSP and conductive layer SA2A of the end SPUH1 of the spacer portion SPUH in Fig. 3 The upper surface angulation θ of the straight line and spacer portion SPUH of setting PSA is set to 45 ° of the following values.

Therefore, Fig. 1 is able to suppress diffusion hot caused by switch element UH and is hindered into example shown in Fig. 3 Possibility.Into example shown in Fig. 3, heat caused by switch element UH is spread Fig. 1 via spacer portion SPUH, substrate SA.

In the case where Fig. 1 is applied to (such as U is equal) high side to power inverter 1 shown in Fig. 3, substrate SB Conductive layer SB3A be electrically connected to side of the positive electrode electric conductor (P bus), the conductive layer SA2A of substrate SA be electrically connected to outlet side conduction Body (output bus).

In the case where Fig. 1 is applied to (such as U is equal) downside to power inverter 1 shown in Fig. 3, substrate SB Conductive layer SB3A be electrically connected to outlet side electric conductor (output bus), the conductive layer SA2A of substrate SA is electrically connected to negative side and leads Electric body (N bus).

The 2nd embodiment > of <

Hereinafter, being illustrated to the 2nd embodiment of the power inverter 1 of the utility model.

The power inverter 1 of 2nd embodiment turns other than aftermentioned point with the electric power of the 1st embodiment Changing device 1 is similarly constituted.Thus, according to the power inverter 1 of the 2nd embodiment, other than aftermentioned point, play with The same effect of power inverter 1 of 1st embodiment.

Fig. 5 is the exploded perspective view of an example of the power inverter 1 of the 2nd embodiment.

In example shown in fig. 5, power inverter 1 includes high-side switch element UH, low side switch element UL, substrate SA, substrate SB, high side driving signal input unit SH, low side driving signal input unit SL, high side spacer portion SPUH, downside spacer portion SPUL, high side connecting line WH (referring to Fig. 6 (A)) and downside connecting line WL (referring to Fig. 6 (B)).

Fig. 6 (A) and Fig. 6 (B) is the lead schematically for indicating the major part of power inverter 1 of the 2nd embodiment The figure of an example of vertical section.Specifically, Fig. 6 (A) is the vertical section for indicating the major part of high side of power inverter 1 Figure.Fig. 6 (B) is the figure for indicating the vertical section of the major part of downside of power inverter 1.Fig. 7 is only to extract Fig. 6 (B) low side switch element UL in and the figure indicated.

Fig. 5 is into example shown in Fig. 7, and switch element UL is in the same manner as switch element UH, and for example, insulated gate bipolar is brilliant Body pipe (Insulated Gate Bipolar Transistor, IGBT), Metal Oxide Semiconductor Field Effect Transistor The switch element of (Metal Oxide Semi-conductor Field Effect Transistor, MOSFET) or the like.

As shown in fig. 7, on wherein (upside of Fig. 7) face ULB of switch element UL, configured with electrode ULB1 and defeated Enter the electrode ULB2 of driving signal.On another (downside of Fig. 7) face ULA of switch element UL, it is configured with electrode ULA1.

For Fig. 5 into example shown in Fig. 7, substrate SA includes the conductive layer opposite with the electrode UHB1 of switch element UH SA2A, the conductive layer SA2B opposite with the electrode ULB1 of switch element UL, electric insulation layer SA1 and match across electric insulation layer SA1 Set the conductive layer SA3 in the opposite side of conductive layer SA2A, SA2B.

It is defeated that the electrode UHB2 of switch element UH is for example connected to driving signal by the connecting line WH of closing line or the like Enter portion SH.The electrode UHB1 of switch element UH is electrically connected to the conductive layer SA2A of substrate SA via spacer portion SPUH.

It is defeated that the electrode ULB2 of switch element UL is for example connected to driving signal by the connecting line WL of closing line or the like Enter portion SL.The electrode ULB1 of switch element UL is electrically connected to the conductive layer SA2B of substrate SA via spacer portion SPUL.

For Fig. 5 into example shown in Fig. 7, substrate SB includes the conductive layer opposite with the electrode UHA1 of switch element UH SB3A, the conductive layer SB3B opposite with the electrode ULA1 of switch element UL, electric insulation layer SB1 and match across electric insulation layer SB1 Set the conductive layer SB2 in the opposite side of conductive layer SB3A, SB3B.

The electrode UHA1 of switch element UH is electrically connected to the conductive layer SB3A of substrate SB.The electrode ULA1 electricity of switch element UL It is connected to the conductive layer SB3B of substrate SB.

The conductive layer SB3B of the conductive layer SA2A and substrate SB of substrate SA are electrically connected via interconnecting piece (not shown).

The side the driving signal input unit SH (Fig. 6 (A) of Fig. 5 into example shown in Fig. 7, in the conductive layer SA2A of substrate SA Right side) conductive layer SA3 of the end SA2A1 compared to substrate SA in the side driving signal input unit SH (right side of Fig. 6 (A)) End SA3A and be located remotely from the side (left side of Fig. 6 (A)) of driving signal input unit SH.Therefore, as double in Fig. 6 (A) To shown in arrow, the width direction of insulation distance between the conductive layer SA2A and connecting line WH of substrate SA in switch element UH Ensured on (left and right directions of Fig. 6 (A)).

The end SA2B1 of the side driving signal input unit SL (left side of Fig. 6 (B)) in the conductive layer SA2B of substrate SA is compared The end SA3B of the side driving signal input unit SL (left side of Fig. 6 (B)) in the conductive layer SA3 of substrate SA and be located remotely from drive The side (right side of Fig. 6 (B)) of dynamic signal input part SL.Therefore, as shown in the four-headed arrow in Fig. 6 (B), the conduction of substrate SA Insulation distance between layer SA2B and connecting line WL obtains in the width direction (left and right directions of Fig. 6 (B)) of switch element UL Ensure.

As described above, insulation of the Fig. 5 into example shown in Fig. 7, between the conductive layer SA2A and connecting line WH of substrate SA Distance ensured in the width direction (left and right directions of Fig. 6 (A)) of switch element UH, the conductive layer SA2B of substrate SA and company Insulation distance between wiring WL is ensured in the width direction (left and right directions of Fig. 6 (B)) of switch element UL, therefore energy Enough make the size of the entirety of power inverter 1 in the thickness direction (upper and lower of Fig. 6 (A) and Fig. 6 (B) of switch element UH, UL To) on minimize.

For Fig. 5 into example shown in Fig. 7, wherein (upside of Fig. 6 (B)) face of spacer portion SPUL is electrically connected to substrate SA Conductive layer SA2B.Another (downside of Fig. 6 (B)) face of spacer portion SPUL is electrically connected to the electrode ULB1 of switch element UL.

As shown in Fig. 6 (B), the side driving signal input unit SL (left side of Fig. 6 (B)) in the conductive layer SA2B of substrate SA End SA2B1 compared to the side driving signal input unit SL (left side of Fig. 6 (B)) in spacer portion SPUL end SPUL1 and position In the side driving signal input unit SL (left side of Fig. 6 (B)).That is, the end SA2B1 of the conductive layer SA2B of substrate SA is compared to interval The end SPUL1 of portion SPUL and it is prominent to the side driving signal input unit SL (left side of Fig. 6 (B)).

Fig. 5 is into example shown in Fig. 7, and the end SA2B1 of the conductive layer SA2B of substrate SA is relative to spacer portion SPUL's End SPUL1, the overhang towards the side driving signal input unit SL (left side of Fig. 6 (B)) be set to conductive layer SA2B's Value more than thickness.That is, the end SA2B1 of the conductive layer SA2B of substrate SA with the amount of thickness of conductive layer SA2B more than, compared to The end SPUL1 of spacer portion SPUL and be located at the side driving signal input unit SL (left side of Fig. 6 (B)).

Therefore, Fig. 5 is able to suppress diffusion hot caused by switch element UL and is hindered into example shown in Fig. 7 Possibility.

For Fig. 5 into example shown in Fig. 7, the conductive layer SB3A of substrate SB is connected to side of the positive electrode electric conductor (P bus).Substrate The conductive layer SB3B of the conductive layer SA2A and substrate SB of SA are electrically connected to outlet side electric conductor (output bus).The conduction of substrate SA Layer SA2A is electrically connected to negative side electric conductor (N bus).

The 3rd embodiment > of <

Hereinafter, being illustrated to the 3rd embodiment of the power inverter 1 of the utility model.

The power inverter 1 of 3rd embodiment turns other than aftermentioned point with the electric power of the 2nd embodiment Changing device 1 is similarly constituted.Thus, according to the power inverter 1 of the 3rd embodiment, other than aftermentioned point, play with The same effect of power inverter 1 of 2nd embodiment.

Fig. 8 is the vertical section schematically for indicating the major part of the high side of power inverter 1 of the 3rd embodiment An example figure.Fig. 9 is the vertical schematically for indicating the major part of the downside of power inverter 1 of the 3rd embodiment The figure of an example of section.

In the power inverter 1 of 2nd embodiment shown in Fig. 6 (A), width direction (Fig. 6 (A) of switch element UH Left and right directions) on substrate SB conductive layer SB3A right part position, the position one with the right part of conductive layer SB2 It causes.

On the other hand, in the power inverter 1 of the 3rd embodiment shown in Fig. 8, the width direction of switch element UH The position of the right part SB3A1 of the conductive layer SB3A of substrate SB on (left and right directions of Fig. 8), the right part with conductive layer SB2 The position of SB2A is different.

Specifically, driving signal input unit SH side (Fig. 8 in example shown in Fig. 8, in the conductive layer SB3A of substrate SB Right side) end SB3A1 compared to the side driving signal input unit SH (right side of Fig. 8) in conductive layer SB2 end SB2A And it is located remotely from the side (left side of Fig. 8) of driving signal input unit SH.

Therefore, in example shown in Fig. 8, in the width direction (left and right directions of Fig. 6 (A)) compared to switch element UH Show shown in the Fig. 6 (A) of the position of the right part of the conductive layer SB3A of substrate SB with the position consistency of the right part of conductive layer SB2 Example, not only can ensure that the insulation distance between the conductive layer SB3A of substrate SB and connecting line WH, but also can make the width of switch element UH The overall dimensions of power inverter 1 on direction (left and right directions of Fig. 8) minimize.That is, being compared in example shown in Fig. 8 The example shown in Fig. 6 (A) can make electrode UHB2 of the driving signal input unit SH close to switch element UH.

Moreover, the side the driving signal input unit SH (right side of Fig. 8 in example shown in Fig. 8, in the conductive layer SA2A of substrate SA Side) conductive layer SB3A of the end SA2A1 compared to substrate SB in the side driving signal input unit SH (right side of Fig. 8) end SB3A1 and the side (left side of Fig. 8) for being located remotely from driving signal input unit SH.

Therefore, the conductive layer SA2A of the substrate SA in the width direction compared to switch element UH (left and right directions of Fig. 8) Right part position and substrate SB conductive layer SB3A right part position consistency the case where, it can be ensured that substrate SA's leads Insulation distance between electric layer SA2A and connecting line WH.

In the power inverter 1 of 2nd embodiment shown in Fig. 6 (B), width direction (Fig. 6 (B) of switch element UL Left and right directions) on substrate SB conductive layer SB3B left part position, the position one with the left part of conductive layer SB2 It causes.

On the other hand, in the power inverter 1 of the 3rd embodiment shown in Fig. 9, the width direction of switch element UL The position of the left part SB3B1 of the conductive layer SB3B of substrate SB on (left and right directions of Fig. 9), the left part with conductive layer SB2 The position of SB2B is different.

Specifically, driving signal input unit SL side (Fig. 9 in example shown in Fig. 9, in the conductive layer SB3B of substrate SB Left side) end SB3B1 compared to the side driving signal input unit SL (left side of Fig. 9) in conductive layer SB2 end SB2B And it is located remotely from the side (right side of Fig. 9) of driving signal input unit SL.

Therefore, in example shown in Fig. 9, in the width direction (left and right directions of Fig. 6 (B)) compared to switch element UL Show shown in the Fig. 6 (B) of the position of the left part of the conductive layer SB3B of substrate SB with the position consistency of the left part of conductive layer SB2 Example, not only can ensure that the insulation distance between the conductive layer SB3B of substrate SB and connecting line WL, but also can make the width of switch element UL The overall dimensions of power inverter 1 on direction (left and right directions of Fig. 9) minimize.That is, being compared in example shown in Fig. 9 The example shown in Fig. 6 (B) can make electrode ULB2 of the driving signal input unit SL close to switch element UL.

Moreover, the side the driving signal input unit SL (left side of Fig. 9 in example shown in Fig. 9, in the conductive layer SA2B of substrate SA Side) conductive layer SB3B of the end SA2B1 compared to substrate SB in the side driving signal input unit SL (left side of Fig. 9) end SB3B1 and the side (right side of Fig. 9) for being located remotely from driving signal input unit SL.

Therefore, the conductive layer SA2B of the substrate SA in the width direction compared to switch element UL (left and right directions of Fig. 9) Left part position and substrate SB conductive layer SB3B left part position consistency the case where, it can be ensured that substrate SA's leads Insulation distance between electric layer SA2B and connecting line WL.

< Application Example >

Hereinafter, being explained with reference to the Application Example of the power inverter 1 of the utility model.

Figure 10 indicates a part of the vehicle 10 of power inverter 1 of applicable 1st embodiment to the 3rd embodiment An example figure.

In the case where the power inverter 1 of the 1st embodiment is suitable for exemplary situation shown in Fig. 10, by 14 the The power inverter 1 of 1 embodiment is used for vehicle 10 shown in Fig. 10.

The case where the power inverter 1 of the 2nd embodiment or the 3rd embodiment is suitable for example shown in Fig. 10 Under, the power inverter 1 of seven the 2nd embodiments or the 3rd embodiment is used for vehicle 10 shown in Fig. 10.

In example shown in Fig. 10, vehicle 10 further includes battery (battery) 11 other than power inverter 1 (BATT), the 1st motor 12 (MOT) of driving and the 2nd motor 13 (GEN) of power generation are travelled.

Battery 11 is including battery case (battery case) and is housed in the intracorporal multiple battery modules of battery case (battery module).Battery module includes the multiple battery units (battery cell) being connected in series.Battery 11 includes With the DC connector 1a of the power inverter 1 positive terminal PB connecting and negative terminal NB.Positive terminal PB and negative pole end Sub- NB is connected to the positive terminal and negative pole end for the multiple battery modules being connected in series in battery case.

1st motor 12 generates rotary driving force (power run action) by the electric power supplied from battery 11.2nd motor 13 generate generation power by being input to the rotary driving force of rotary shaft.It herein, is that can transmit internal combustion engine in the 2nd motor 13 Rotary power constitute.For example, the 1st motor 12 and the 2nd motor 13 are respectively brushless (brush less) direct current of three-phase alternating current (Direct Current, DC) motor.Three-phase is U phase, V phase and W phase.1st motor 12 and the 2nd motor 13 are respectively internal rotor (inner rotor) type.1st motor 12 and the 2nd motor 13 respectively include: rotor has exciting permanent magnet；And it is fixed Son has the stator winding of the three-phase for generating the rotating excitation field for rotating rotor.The stator winding of the three-phase of 1st motor 12 It is connected to the 1st three-phase connector 1b of power inverter 1.The stator winding of the three-phase of 2nd motor 13 is connected to electrical power conversion 2nd three-phase connector 1c of device 1.

Power inverter 1 shown in Fig. 10 includes power module (power module) 21, reactor (reactor) 22, capacitor unit (condenser unit) 23, resistor 24, the 1st current sensor 25, the 2nd current sensor the 26, the 3rd Current sensor 27, electronic control unit 28 (MOT GEN ECU) and drive element of the grid (gate drive unit) 29 (G/D VCU ECU)。

Power module 21 includes the 1st power conversion circuit portion 31, the 2nd power conversion circuit portion 32 and the 3rd electrical power conversion electricity Road portion 33.

In the case where the power inverter 1 of 14 the 1st embodiments is used for vehicle 10 shown in Fig. 10, the 1st Power conversion circuit portion 31 includes power inverter 1 of six Fig. 1 to the 1st embodiment shown in Fig. 3.

The power inverter 1 of seven the 2nd embodiments or the 3rd embodiment is being used for vehicle 10 shown in Fig. 10 In the case of, the 1st power conversion circuit portion 31 includes electricity of three Fig. 5 to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment Power conversion device 1.Specifically, a Fig. 5 to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment power inverter 1 constitutes the U phase in the 1st power conversion circuit portion 31.Another Fig. 5 is to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment Power inverter 1 constitutes the V phase in the 1st power conversion circuit portion 31.One Fig. 5 of residue to the 2nd embodiment shown in Fig. 9 or The power inverter 1 of 3rd embodiment constitutes the W phase in the 1st power conversion circuit portion 31.

The outlet side electric conductor (output bus) 51 in the 1st power conversion circuit portion 31 summarizes U phase, V phase and W phase this three-phase Ground is connected to the 1st three-phase connector 1b.That is, the outlet side electric conductor 51 in the 1st power conversion circuit portion 31 is connected via the 1st three Device 1b and the stator winding for being connected to the three-phase of the 1st motor 12.

Side of the positive electrode electric conductor (P bus) PI in the 1st power conversion circuit portion 31 U phase, V phase and W phase this three-phase are summarized and It is connected to the positive terminal PB of battery 11.

Negative side electric conductor (N bus) NI in the 1st power conversion circuit portion 31 U phase, V phase and W phase this three-phase are summarized and It is connected to the negative terminal NB of battery 11.

That is, the direct current that the 1st power conversion circuit portion 31 will be inputted from battery 11 via the 3rd power conversion circuit portion 33 Power is converted to three-phase ac power.

In the case where the power inverter 1 of 14 the 1st embodiments is used for vehicle 10 shown in Fig. 10, the 2nd Power conversion circuit portion 32 includes power inverter 1 of six Fig. 1 to the 1st embodiment shown in Fig. 3.

The power inverter 1 of seven the 2nd embodiments or the 3rd embodiment is being used for vehicle 10 shown in Fig. 10 In the case of, the 2nd power conversion circuit portion 32 includes electricity of three Fig. 5 to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment Power conversion device 1.Specifically, a Fig. 5 to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment power inverter 1 constitutes the U phase in the 2nd power conversion circuit portion 32.Another Fig. 5 is to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment Power inverter 1 constitutes the V phase in the 2nd power conversion circuit portion 32.One Fig. 5 of residue to the 2nd embodiment shown in Fig. 9 or The power inverter 1 of 3rd embodiment constitutes the W phase in the 2nd power conversion circuit portion 32.

The outlet side electric conductor (output bus) 52 in the 2nd power conversion circuit portion 32 summarizes U phase, V phase and W phase this three-phase And it is connected to the 2nd three-phase connector 1c.That is, the outlet side electric conductor 52 in the 2nd power conversion circuit portion 32 is connected via the 2nd three Device 1c and the stator winding for being connected to the three-phase of the 2nd motor 13.

Side of the positive electrode electric conductor (P bus) PI in the 2nd power conversion circuit portion 32 U phase, V phase and W phase this three-phase are summarized and It is connected to the positive terminal PB of battery 11 and the side of the positive electrode electric conductor PI in the 1st power conversion circuit portion 31.

Negative side electric conductor (N bus) NI in the 2nd power conversion circuit portion 32 U phase, V phase and W phase this three-phase are summarized and It is connected to the negative terminal NB of battery 11 and the negative side electric conductor NI in the 2nd power conversion circuit portion 32.

The three-phase ac power inputted from the 2nd motor 13 is converted to direct current power by the 2nd power conversion circuit portion 32.Through The direct current power of 2 power conversion circuit portions 32 conversion can be supplied at least one into battery 11 and the 1st power conversion circuit portion 31 Person.

In the case where the power inverter 1 of 14 the 1st embodiments is used for vehicle 10 shown in Fig. 10, the 1st Switch element UH, UL, VH, VL, WH, the WL in power conversion circuit portion 31 include six Fig. 1 to the 1st embodiment shown in Fig. 3 Power inverter 1 switch element UH.

The power inverter 1 of seven the 2nd embodiments or the 3rd embodiment is being used for vehicle 10 shown in Fig. 10 In the case of, switch element UH, the UL in the 1st power conversion circuit portion 31 include the 1st Fig. 5 to the 2nd embodiment shown in Fig. 9 or Switch element UH, UL of the power inverter 1 of 3rd embodiment, switch element VH, the VL in the 1st power conversion circuit portion 31 The switch element UH of power inverter 1 comprising the 2nd Fig. 5 to the 2nd embodiment shown in Fig. 9 or the 3rd embodiment, UL, switch element WH, the WL in the 1st power conversion circuit portion 31 include the 3rd Fig. 5 to the 2nd embodiment shown in Fig. 9 or the 3rd Switch element UH, UL of the power inverter 1 of embodiment.

In example shown in Fig. 10, U phase switch element UH, V phase switch element VH, W phase in the 1st power conversion circuit portion 31 Switch element WH and U phase switch element UH, V phase switch element VH, W phase switch element WH in the 2nd power conversion circuit portion 32 It is connected to side of the positive electrode electric conductor PI.Side of the positive electrode electric conductor PI is connected to the positive electrode bus 50p of capacitor unit 23.

U phase switch element UL, V phase switch element VL, W phase switch element WL and the 2nd in the 1st power conversion circuit portion 31 U phase switch element UL, V phase switch element VL, W phase switch element WL in power conversion circuit portion 32 is connected to negative side electric conductor NI.Negative side electric conductor NI is connected to the negative electrode bus 50n of capacitor unit 23.

In example shown in Fig. 10, the U phase switch element UH and U phase switch element UL's in the 1st power conversion circuit portion 31 Tie point TI, W phase switch element WH and W phase switch element WL of tie point TI, V phase switch element VH and V phase switch element VL Tie point TI be connected to outlet side electric conductor 51.

Tie point TI, V phase of the U phase switch element UH and U phase switch element UL in the 2nd power conversion circuit portion 32 switchs member The tie point TI of tie point TI, W phase switch element WH and W phase switch element WL of part VH and V phase switch element VL is connected to defeated Side electric conductor 52 out.

In example shown in Fig. 10, the outlet side electric conductor 51 in the 1st power conversion circuit portion 31 be connected to the 1st input/it is defeated Terminal Q1 out.1st input/output terminal Q1 is connected to the 1st three-phase connector 1b.Each phase in the 1st power conversion circuit portion 31 Tie point TI is connected to the 1st motor via outlet side electric conductor 51, the 1st input/output terminal Q1 and the 1st three-phase connector 1b The stator winding of 12 each phase.

The outlet side electric conductor 52 in the 2nd power conversion circuit portion 32 is connected to the 2nd input/output terminal Q2.2nd input/ Output terminal Q2 is connected to the 2nd three-phase connector 1c.The tie point TI of each phase in the 2nd power conversion circuit portion 32 is via outlet side Electric conductor 52, the 2nd input/output terminal Q2 and the 2nd three-phase connector 1c and be connected to the stator of each phase of the 2nd motor 13 around Group.

In example shown in Fig. 10, switch element UH, UL, VH, VL, WH, the WL in the 1st power conversion circuit portion 31 respectively have Standby freewheeling diode (flywheel diode).

Similarly, switch element UH, UL, VH, VL, WH, the WL in the 2nd power conversion circuit portion 32 are each provided with two pole of afterflow Pipe.

In example shown in Fig. 10, drive element of the grid 29 to the switch element UH, UL in the 1st power conversion circuit portion 31, Each input grid signal of VH, VL, WH, WL.

Similarly, switch element UH, UL, VH, VL, WH, the WL of drive element of the grid 29 to the 2nd power conversion circuit portion 32 Each input grid signal.

The direct current power that 1st power conversion circuit portion 31 will be inputted from battery 11 via the 3rd power conversion circuit portion 33 Three-phase ac power is converted to, and to U phase current, V phase current and the W of the supply exchange of the stator winding of the three-phase of the 1st motor 12 Phase current.It is opened by the 2nd synchronous power conversion circuit portion 32 of the rotation with the 2nd motor 13 in 2nd power conversion circuit portion 32 Respective connections (conducting) of element UH, UL, VH, VL, WH, WL/disconnection (blocking) is closed to drive, it will be from the three-phase of the 2nd motor 13 The three-phase ac power of stator winding output is converted to direct current power.

In the case where the power inverter 1 of 14 the 1st embodiments is used for vehicle 10 shown in Fig. 10, the 3rd Switch element S1, the S2 in power conversion circuit portion 33 include that the electrical power conversion of two Fig. 1 to the 1st embodiment shown in Fig. 3 fills Set 1 switch element UH.

The power inverter 1 of seven the 2nd embodiments or the 3rd embodiment is being used for vehicle 10 shown in Fig. 10 In the case of, switch element S1, the S2 in the 3rd power conversion circuit portion 33 include a Fig. 5 to the 2nd embodiment shown in Fig. 9 or Switch element UH, UL of the power inverter 1 of 3rd embodiment.

3rd power conversion circuit portion 33 is voltage control unit (VCU).3rd power conversion circuit portion 33 includes the height of 1 phase The switch element S1 of the side and switch element S2 of downside.

The electrode of the side of the positive electrode of switch element S1 is connected to positive electrode bus PV.Positive electrode bus PV is connected to capacitor unit 23 Positive electrode bus 50p.The electrode of the negative side of switch element S2 is connected to negative electrode bus NV.Negative electrode bus NV is connected to capacitor The negative electrode bus 50n of unit 23.The negative electrode bus 50n of capacitor unit 23 is connected to the negative terminal NB of battery 11.Switch member The electrode of the negative side of part S1 is connected to the electrode of the side of the positive electrode of switch element S2.Switch element S1 and switch element S2 has continuous Flow diode.

The bus 53 of the switch element S1 and the tie point of switch element S2 that constitute the 3rd power conversion circuit portion 33 are connected to One end of reactor 22.The other end of reactor 22 is connected to the positive terminal PB of battery 11.Reactor 22 includes coil and right The temperature sensor that the temperature of coil is detected.Temperature sensor is connected to electronic control unit 28 by signal wire.

3rd power conversion circuit portion 33 is based on the grid and switch member for being input to switch element S1 from drive element of the grid 29 The grid signal of the grid of part S2, to switch connection (conducting)/disconnection (blocking) of switch element S1 Yu switch element S2.

3rd power conversion circuit portion 33 is set to connect (conducting) and switch element in switch element S2 in boosting S1 is set off the 1st state of (blocking), be set off (blocking) with switch element S2 and switch element S1 is set It is set between the 2nd state of connection (conducting) and alternately switches.Under the 1st state, electric current sequentially flows to the positive terminal of battery 11 Sub- PB, reactor 22, switch element S2, battery 11 negative terminal NB, reactor 22 accumulated magnetic energy by DC excitation.? Under 2nd state, in reactor 22 due to interfere in a manner of flux change caused by the electric current for flowing to reactor 22 is blocked Electromotive force (induced voltage) is generated between both ends.Because induced voltage caused by the magnetic energy that is accumulated in reactor 22 is overlapped in battery electricity Pressure, so that the boost voltage higher than the voltage between terminals of battery 11 is applied to the positive electrode bus PV in the 3rd power conversion circuit portion 33 Between negative electrode bus NV.

3rd power conversion circuit portion 33 alternately switches between the 2nd state and the 1st state in regeneration.In the 2nd shape Under state, electric current sequentially flows to the positive electrode bus PV in the 3rd power conversion circuit portion 33, switch element S1, reactor 22, battery 11 Positive terminal PB, reactor 22 are accumulated magnetic energy by DC excitation.Under the 1st state, to interfere because flowing to reactor 22 Electric current is blocked the mode of caused flux change and generates electromotive force (induced voltage) between the both ends of reactor 22.Because of accumulation The induced voltage caused by the magnetic energy in reactor 22 is depressured, than the 3rd power conversion circuit portion 33 positive electrode bus PV and The low step-down voltage of voltage between negative electrode bus NV is applied between the positive terminal PB of battery 11 and negative terminal NB.

Capacitor unit 23 includes the 1st smoothing capacity device 41, the 2nd smoothing capacity device 42 and noise filter (noise filter)43。

1st smoothing capacity device 41 is connected between the positive terminal PB of battery 11 and negative terminal NB.1st smoothing capacity device The switching of the on/off of switch element S1 and switch element S2 when the regeneration in 41 pairs of adjoint 3rd power conversion circuit portions 33 The variation in voltage for acting and generating is smoothed.

It is respective just that 2nd smoothing capacity device 42 is connected to the 1st power conversion circuit portion 31 and the 2nd power conversion circuit portion 32 Between pole side electric conductor PI and negative side electric conductor NI and the positive electrode bus PV and negative electrode bus NV in the 3rd power conversion circuit portion 33 Between.2nd smoothing capacity device 42 is connected to multiple side of the positive electrode electric conductor PI via positive electrode bus 50p and negative electrode bus 50n and bears Pole side electric conductor NI and positive electrode bus PV and negative electrode bus NV.2nd smoothing capacity device 42 is to the 1st power conversion circuit portion 31 And the 2nd power conversion circuit portion 32 the respective on/off of switch element UH, UL, VH, VL, WH, WL switching action and produce Raw variation in voltage is smoothed.2nd smoothing capacity device 42 to the 3rd power conversion circuit portion 33 boosting when switch The switching action of the on/off of element S1 and switch element S2 and the variation in voltage generated is smoothed.

Noise filter 43 is connected to the respective anode in the 1st power conversion circuit portion 31 and the 2nd power conversion circuit portion 32 Between side electric conductor PI and negative side electric conductor NI between the positive electrode bus PV and negative electrode bus NV in the 3rd power conversion circuit portion 33. Noise filter 43 has two capacitors of series connection.The tie point of two capacitors is connected to the vehicle body ground connection of vehicle 10 (body ground) etc..

Resistor 24 is connected to the respective side of the positive electrode in the 1st power conversion circuit portion 31 and the 2nd power conversion circuit portion 32 and leads Between electric body PI and negative side electric conductor NI between the positive electrode bus PV and negative electrode bus NV in the 3rd power conversion circuit portion 33.

1st current sensor 25 is configured at outlet side electric conductor 51, examines to the electric current of each phase of U phase, V phase and W phase Survey, the outlet side electric conductor 51 constitutes the tie point TI of each phase in the 1st power conversion circuit portion 31, and with the 1st input/output Terminal Q1 connection.2nd current sensor 26 is configured at outlet side electric conductor 52, carries out to the electric current of each phase of U phase, V phase and W phase Detection, the outlet side electric conductor 52 constitute the tie point TI of each phase in the 2nd power conversion circuit portion 32, and with the 2nd input/ Output terminal Q2 connection.3rd current sensor 27 is configured at bus 53, detects to the electric current for flowing to reactor 22, described Bus 53 constitutes the tie point of switch element S1 and switch element S2, and connect with reactor 22.

1st current sensor 25, the 2nd current sensor 26 and the 3rd current sensor 27 are connected each by signal wire In electronic control unit 28.

Electronic control unit 28 controls the 1st motor 12 and the respective movement of the 2nd motor 13.For example, electronic control Unit 28 is to execute established procedure by processors such as central processing units (Central Processing Unit, CPU) and play Software (software) function part of function.Software function portion is the read-only memory for including the processors such as CPU, save routine (Read Only Memory, ROM), temporary storing data random access memory (Random Access Memory, ) and the electronic control unit (Electronic Control Unit, ECU) of the electronic circuits such as timer (timer) RAM.In addition, electric At least part of sub-control unit 28 can also be the collection such as large scale integrated circuit (Large Scale Integration, LSI) At circuit.For example, electronic control unit 28 execute using the 1st current sensor 25 current detection value and be directed to the 1st motor Current feedback (feedback) control of the 12 corresponding current target value of torque (torque) instruction value etc., generation is input to grid The control signal of pole driving unit 29.For example, electronic control unit 28 executes the current detection value for using the 2nd current sensor 26 With the Current Feedback Control etc. of current target value corresponding with the regeneration instructions value of the 2nd motor 13 is directed to, generation is input to grid The control signal of driving unit 29.Control letter is indicated to the 1st power conversion circuit portion 31 and the 2nd power conversion circuit portion 32 Each opportunity (timing) for being connected (conducting)/disconnection (blocking) driving of switch element UH, UL, VH, VL, WH, WL Signal.For example, control signal is the signal etc. through pulsewidth modulation.

Drive element of the grid 29 is based on generating from the received control signal of electronic control unit 28 for turning the 1st electric power The each of switch element UH, UL, VH, VL, WH, WL for changing circuit portion 31 and the 2nd power conversion circuit portion 32 is actually connected (conducting)/disconnect the grid signal that (blocking) drives.For example, drive element of the grid 29 executes the amplification of control signal and level turns It changes (level shift) etc. and generates grid signal.

Drive element of the grid 29 is generated for the switch element S1 and switch element S2 to the 3rd power conversion circuit portion 33 Each grid signal for being connected (conducting)/disconnection (blocking) driving.For example, drive element of the grid 29 generates and the 3rd electric power When the boosting of conversion circuit 33 boost voltage instruction or the 3rd power conversion circuit portion 33 regeneration when step-down voltage instruction The grid signal of corresponding duty ratio.Duty ratio is the ratio of switch element S1 and switch element S2.

It is that the power inverter 1 of the 1st embodiment to the 3rd embodiment is suitable for vehicle in example shown in Fig. 10 10, but in other examples, the power inverter 1 of the 1st embodiment to the 3rd embodiment can also be suitable for such as elevator (elevator), other than the vehicle 10 for pumping (pump), fan (fan), rolling stock, air conditioner, refrigerator, washing machine or the like Equipment.

The embodiments of the present invention is only to illustrate, it is not intended to limit the range of utility model.These embodiments It can implement in such a way that others are various, in the range of not departing from the purport of utility model, be able to carry out various omissions, set It changes, change.These embodiments or the deformation are included in the range or purport of utility model, are also contained in claim In the range of documented utility model and its equalization.

Claims (4)

1. a kind of power inverter characterized by comprising

Switch element is configured with the 2nd electrode of the 1st electrode and input drive signal in wherein one side；

1st substrate is electrically insulated including the 1st conductive layer opposite with the 1st electrode, the 1st electric insulation layer and across the described 1st Layer and configure the 1st conductive layer opposite side the 2nd conductive layer；And

Connecting line connects the 2nd electrode and driving signal input unit,

The 1st electrode of the switch element is electrically connected to the 1st conductive layer of the 1st substrate,

The end of driving signal input unit side in 1st conductive layer is compared to the drive in the 2nd conductive layer The end of dynamic signal input part side and the side for being located remotely from the driving signal input unit.

2. power inverter according to claim 1, which is characterized in that

In the another side of the switch element, it is configured with the 3rd electrode,

The power inverter further includes the 2nd substrate, and the 2nd substrate includes 3rd conduction opposite with the 3rd electrode 4th conductive layer of layer, the 2nd electric insulation layer and the opposite side configured across the 2nd electric insulation layer in the 3rd conductive layer,

3rd electrode is electrically connected to the 3rd conductive layer,

The end of driving signal input unit side in 3rd conductive layer is compared to the drive in the 4th conductive layer The end of dynamic signal input part side and the side for being located remotely from the driving signal input unit.

3. power inverter according to claim 2, which is characterized in that

The end of driving signal input unit side in 1st conductive layer is compared to the drive in the 3rd conductive layer The end of dynamic signal input part side and the side for being located remotely from the driving signal input unit.

4. power inverter according to any one of claims 1 to 3, which is characterized in that further include:

Spacer portion, the another side that there is the wherein one side for being electrically connected to the 1st conductive layer and be electrically connected to the 1st electrode,

The end of 1st conductive layer with the amount of thickness of the 1st conductive layer more than, compared to the institute in the spacer portion It states the end of driving signal input unit side and is located at driving signal input unit side.