WO2013046880A1 - 自動車用電力変換制御装置 - Google Patents
自動車用電力変換制御装置 Download PDFInfo
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- WO2013046880A1 WO2013046880A1 PCT/JP2012/068357 JP2012068357W WO2013046880A1 WO 2013046880 A1 WO2013046880 A1 WO 2013046880A1 JP 2012068357 W JP2012068357 W JP 2012068357W WO 2013046880 A1 WO2013046880 A1 WO 2013046880A1
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 55
- 239000004065 semiconductor Substances 0.000 claims abstract description 39
- 238000004804 winding Methods 0.000 claims description 36
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000000446 fuel Substances 0.000 abstract description 8
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- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 238000005476 soldering Methods 0.000 description 3
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- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to an automotive power conversion control device that controls an electric motor mounted on an automobile, and more particularly to an automotive power conversion control device that can drive and control an electric motor even if a part of an inverter circuit or the like fails. .
- An electric motor or the like used for driving power of an automobile such as an electric car or a hybrid car is driven with a high voltage of several hundred volts.
- an inverter circuit using a switching element made of a power semiconductor element such as an IGBT (insulated gate bipolar transistor) is used to drive a motor. It is necessary to convert to AC.
- IGBT insulated gate bipolar transistor
- a signal for driving the inverter circuit for example, a drive signal for driving the gate of the IGBT, is generated in the control circuit of the low voltage circuit that is insulated from the high voltage circuit that drives the motor and operates at a voltage lower than the voltage of the high voltage circuit. Is done.
- an electric power conversion control device for driving the electric motor is provided with an IGBT drive circuit for driving the IGBT of the inverter circuit based on the drive signal. That is, an electric power conversion control device for an electric motor includes an electric motor control circuit that operates in a low voltage circuit, an IGBT drive circuit that operates in the high voltage circuit and drives an IGBT based on a drive signal generated by the electric motor control circuit, And an inverter circuit composed of a plurality of IGBTs.
- the motor is driven by three-phase alternating current, but if one of the IGBTs breaks due to an event such as a short circuit, the IGBT drive circuit The power supply may become inoperable and all gate circuits may stop. For this reason, it becomes impossible for the electric motor to continue rotating, and the automobile can no longer be moved.
- each IGBT gate circuit of the IGBT drive circuit is independent of each gate circuit.
- the electric motor can be rotated by a two-phase coil.
- this power conversion control device is an environment in which the power conversion control device is mounted on a vehicle, the size of the power conversion control device is reduced, that is, the device is reduced in size and mounted. There is a need to reduce the weight of the hybrid vehicle in order to improve the fuel efficiency of the gasoline engine.
- the power conversion control device for an automobile described in Patent Document 1 certainly has a limp home function, it is downsized because six power sources including a transformer are required for each gate circuit of each IGBT drive circuit. As mentioned above, it was not possible to meet the demands for improving mountability and fuel consumption.
- An object of the present invention is to provide an automotive power conversion control device that has a limp home function and is improved in size and weight.
- a feature of the present invention is that a power semiconductor module comprising a power semiconductor element that converts a direct current into a three-phase alternating current to drive an electric motor, and an automotive power conversion control device including a drive circuit that drives the power semiconductor module
- the power semiconductor module and the drive circuit are composed of three unit semiconductor modules and three unit drive circuits corresponding to three-phase alternating current, and the power supply units of the unit drive circuits are provided independently of each other.
- the other two phases have a dedicated DC power supply independent of the failed one phase, so that they can operate without being affected by the failed IGBT. Accordingly, the other two phases (V phase and W phase) can operate independently of the failed one phase (U phase), and the electric motor 10 can be continuously rotated.
- the physique is reduced in size and weight is reduced. It is possible to meet the demands for improved mountability and fuel efficiency.
- FIG. 1 It is a figure which shows the circuit structure of the power conversion control apparatus for motor vehicles which becomes one Example of this invention. It is a disassembled perspective view of the power conversion control device for motor vehicles which consists of a circuit structure shown in FIG. It is a block diagram of the circuit board which shows the arrangement
- Reference numeral 10 is an electric motor that operates with a three-phase alternating current, and this electric motor 10 is connected to the IGBT module 11, and from the IGBT module 11. In response to this drive signal, a rotating magnetic field is generated in the induction winding on the fixed side constituting the electric motor 10 to rotate the electric motor 10.
- the IGBT module 11 is composed of switching elements Sn1 to Sn6 composed of six IGBTs.
- the six switching elements Sn1 to Sn6 are supplied in pairs to supply power to the U-phase, V-phase, and W-phase windings of the electric motor 10, respectively.
- switching element Sn1, switching element Sn3, and switching element Sn5 is connected to DC power supply 12, and the emitters of switching element Sn2, switching element Sn4, and switching element Sn6 are grounded via inductances Lu, Lv, and Lw. Yes.
- This inductance is the inductance of the wiring.
- the DC power source 12 to which the collector side of the switching element Sn1, the switching element Sn3, and the switching element Sn5 is connected is, for example, a plurality of lithium ion batteries connected in series to ensure a high voltage DC power source.
- the emitter of the switching element Sn1 and the collector of the switching element Sn2 are connected, and the power of the U-phase winding is controlled by this pair of switching elements.
- the emitter of the switching element Sn3 and the collector of the switching element Sn4 are The power of the V-phase winding is controlled by the pair of switching elements.
- the emitter of the switching element Sn5 and the collector of the switching element Sn6 are connected, and the W-phase winding is connected by the pair of switching elements.
- the power of the line is controlled, and these configurations are already well-known configurations.
- drive circuits 13 to 18 as gate drivers are connected to the gates of the switching elements Sn1 to Sn6, and these drive circuits 13 to 18 generate U-phase, V-phase and W-phase winding drive signals. Generated.
- the drive circuit 13 to the drive circuit 18 are supplied with power by a common power supply unit 19, which is supplied by a transformer unit 20 and a MOS FET that controls the supply of electrical energy to the transformer unit 20.
- the transformer unit 20 is composed of one common primary winding 24 and six secondary windings 25A to 25F connected to the drive circuits 13 to 18.
- the drive circuit 17 is normally made to operate at about the maximum gate voltage of the switching element Sn5, when the high voltage is applied, the drive circuit 17 connected to the switching element Sn5 is destroyed.
- a short-circuit current flows as shown by an arrow (2) (indicated by a circle in the drawing). This short-circuit current causes a current to flow in the secondary winding 25A connected to the drive circuit 17 of the transformer unit 20 as indicated by an arrow (3) (shown in a circle in the drawing).
- the current to the common primary winding 24 of the transformer unit 20 flows as indicated by the arrow (4) (shown by circles in the drawing), but by the arrow (3) of the secondary winding 25A. Most of the electric energy is consumed by the current flow as shown, and the outputs of the other secondary winding 24B to secondary winding 24F terminals are not output.
- Patent Document 1 As a countermeasure against such an event, as disclosed in Patent Document 1, by connecting a power source including six independent transformers to each gate circuit of each IGBT, one of the IGBTs may be short-circuited. Even if a failure occurs, the remaining power supply is still alive, so that the motor can be rotated by at least two of the U-phase, V-phase, and W-phase windings.
- the power conversion control device for automobiles having such a limp home function is an environment in which the power conversion control device is mounted on a vehicle as described above, the physique is reduced, that is, the device is reduced in size and mounted. There is a demand for weight reduction in order to improve fuel efficiency and to improve the fuel efficiency of gasoline engines in hybrid vehicles.
- each gate circuit requires six power supplies including a transformer, and thus can be reduced in size and weight.
- FIG. 1 shows a circuit configuration of an automotive power conversion control apparatus according to an embodiment of the present invention. Reference numerals common to the components shown in FIG. 1 indicate the same or equivalent functions. .
- reference numeral 30 is a unit semiconductor module (hereinafter referred to as a unit IGBT module) composed of a pair of switching elements Sn1 and Sn2 that controls U-phase power, and similarly controls V-phase power.
- a unit IGBT module 31 comprising a pair of switching elements Sn3 and Sn4, and a unit IGBT module 32 comprising a pair of switching elements Sn5 and switching element Sn6 for controlling W-phase power are provided.
- the switching element Sn1 of the unit IBGT module 30 is connected to the driving circuit 13, and the switching element Sn2 is connected to the driving circuit 14.
- the driving circuit 13 and the driving circuit 14 correspond to the unit IGBT module 30 and are unit driving circuits. It is configured as.
- switching element Sn3 and the switching element Sn4 of the unit IBGT module 31 and the driving circuit 15 and the driving circuit 16 of the unit IBGT module 31, and the switching element Sn5 and the switching element Sn6 of the unit IBGT module 32 are configured as the unit driving circuit.
- the switching element Sn3 and the switching element Sn4 of the unit IBGT module 31 and the driving circuit 15 and the driving circuit 16 of the unit IBGT module 31, and the switching element Sn5 and the switching element Sn6 of the unit IBGT module 32 are configured as the unit driving circuit.
- each unit drive circuit of each unit IGBT module 30 to unit IGBT module 32 includes an independent power supply unit 33.
- FIG. 1 shows an independent power supply unit 33 dedicated to the unit drive circuit of the IGBT module 30, and the independent power supply unit dedicated to the unit drive circuit of the IGBT module 31 and the IGBT module 32 is not shown. All have the same configuration.
- the power supply unit 33 includes a transformer unit 34, a switching element 35 made of a MOS type FET for controlling electric energy supply to the transformer unit 34, a power source IC 36 and a capacitor 37.
- the transformer unit 34 includes an iron core, one primary winding 38 electromagnetically coupled to the iron core, a secondary winding 39 electromagnetically coupled to the iron core and connected to the drive circuit 13, and the iron core and electromagnetic coupling.
- the secondary winding 40 is connected to the drive circuit 14.
- the inductance Lu is the inductance of the wiring, and the ground point of the drive circuit 14 is determined by using the emitter of the switching element Sn2 as a single ground so that the power supply of the drive circuit 14 does not change.
- Divided resistors R1 and R2 for feedback signals are provided between the secondary winding 40 on the input side of the drive circuit 14 and the ground, and the power supply IC 36 causes the MOS FET 35 to be driven by an intermediate voltage signal between the divided resistors R1 and R2.
- the drive is controlled so that the voltage to the drive circuit 14 is constant.
- the electrical energy input from the DC power supply 12 is stored in the capacitor 37, converted into a voltage by the drive circuit 13 and the drive circuit 14 via the transformer unit 34, and a voltage is applied.
- the drive circuit 13 and the drive circuit 14 drive the switching element Sn ⁇ b> 1 and the switching element Sn ⁇ b> 2 and supply power to the U-phase winding of the electric motor 10.
- the winding ratio of the secondary winding 39 of the transformer unit 34 connected to the drive circuit 13 to the primary winding is the same as the winding ratio of the secondary winding 40 connected to the drive circuit 14. Is set to produce the same voltage.
- the other two phases since the other two phases have a dedicated DC power supply independent of the failed one phase, they can operate without being affected by the failed IGBT. Accordingly, the other two phases (V phase and W phase) can operate independently of the failed one phase (U phase), and the electric motor 10 can be continuously rotated.
- the motor can be moved by rotating the motor, which can greatly contribute to improving the safety of drivers and passengers.
- FIG. 2 is a perspective view of the automobile power conversion control device disassembled and viewed from an oblique direction, and particularly shows the inside of the case that houses the mounting circuit.
- an IGBT module that drives the electric motor 10 a bus bar that transmits high voltage to the electric motor 10, a cooling mechanism that cools the IGBT module, and the like are arranged inside the metal case 41. Since it is not so much related to the present invention, detailed description is omitted.
- an IGBT module 30 comprising a switching element Sn1 and a switching element Sn2 paired therewith, an IGBT module 31 comprising a switching element Sn3 and a switching element Sn4 paired therewith,
- the IGBT module 32 including the switching element Sn5 and the switching element Sn6 paired with the switching element Sn5 is attached so as to be heat sinkable.
- Each switching element Sn1 to switching element Sn6 is provided with a control terminal 43, which extends along the outer wall direction of the case 41. These control terminals 43 are inserted into the terminal holes 45 of the control board 44 and are electrically connected to the circuit components of the control board by soldering or the like.
- FIG. 3 shows the mounting surface showing the arrangement state of the circuit components of the control board 44.
- This mounting surface faces the inside of the case 41 in FIG. That is, the circuit components of the control board 44 are stored in the case 41.
- a low voltage control circuit unit 46 for generating a control signal for the electric motor 10 is arranged near the center of the control board 44, and each low voltage control circuit unit 46 is arranged on the outer side of one side facing each other.
- An IGBT module drive circuit and a power supply unit are arranged.
- a drive circuit 13 for driving the U-phase switching element Sn1 and a pair of the switching element Sn1 are paired on the upper left outer side which is one side of the low voltage control circuit unit 46 shown in FIG.
- a drive circuit 14 for driving the switching element Sn2 is disposed.
- the drive circuit 13 and the drive circuit 14 are electrically connected to the IGBT control terminals which are the switching element Sn1 and the switching element Sn2.
- a transformer part 34 constituting a power supply part 33 and a power supply IC 36 incorporating a MOS FET switching element 35 are arranged.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- the transformer unit 34 and the power supply IC 36 constituting the power supply unit 33 are arranged adjacent to the low voltage control circuit unit 46.
- a driving circuit 15 for driving a V-phase switching element Sn3 and a switching element that forms a pair with the switching element Sn3 are arranged on the upper right outer side that is one side of the low voltage control circuit unit 46 shown in FIG.
- a drive circuit 16 for driving Sn4 is arranged.
- the drive circuit 15 and the drive circuit 16 are electrically connected to the IGBT control terminals of the switching element Sn3 and the switching element Sn4.
- a power supply IC 36 including a transformer 34 constituting a power supply unit 33 dedicated to the V phase and a MOS FET switching element 35 is disposed.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- transformer unit 34 and the power supply IC 36 constituting the power supply unit 33 are arranged adjacent to the low voltage control circuit unit 46.
- a U-phase and V-phase two-phase drive circuit and a power supply unit are arranged on one side of the low voltage control circuit unit 46, which is suitable for a mounting shape in which the shape of the case 41 is rectangular. . Since the remaining is one phase of the W phase, it can be naturally stored in a rectangular case.
- a driving circuit 17 for driving the W-phase switching element Sn5 and a switching paired with the switching element Sn5 are provided on the outer side on the lower right side, which is the other side of the low voltage control circuit unit 46 shown in FIG. 3, a driving circuit 17 for driving the W-phase switching element Sn5 and a switching paired with the switching element Sn5 are provided.
- a drive circuit 18 for driving the element Sn6 is arranged.
- the drive circuit 17 and the drive circuit 18 are electrically connected to the control terminals of the IGBTs that are the switching element Sn5 and the switching element Sn6.
- a transformer unit 34 constituting a power supply unit 33 dedicated to the W phase and a power supply IC 36 incorporating a MOS FET switching element 35 are arranged.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- transformer unit 34 and the power supply IC 36 constituting the power supply unit 33 are arranged adjacent to the low voltage control circuit unit 46.
- the drive circuit 13 and the drive circuit 14 have substantially the same shape in plan view with respect to the paper surface, and are arranged symmetrically with respect to the transformer 34 and the power supply IC 36 as a boundary.
- the drive circuit 15 and the drive circuit 16, and the drive circuit 17 and the drive circuit 18 have substantially the same shape in plan view with respect to the paper surface, and are arranged symmetrically with respect to the transformer 34 and the power supply IC 36.
- connection terminals 43 of the IGBT modules 30, 31, and 32 are configured to be connected on the outer periphery of the drive circuits 13 to 18.
- the exchange of electrical control signals between the low voltage control circuit unit 46 and each of the drive circuits 13 to 18 is interposed between the low voltage control circuit unit 46 and each of the drive circuits 13 to 18.
- a U-phase side photocoupler 47, a V-phase side photocoupler 48, and a W-phase side photocoupler 49 are used.
- the main features of the arrangement of the circuit components of the control board 44 are as follows: (1) the drive circuits 13 to 18 are arranged on opposite sides of the low voltage control circuit section 46; Between the drive circuit of the switching element that is paired with the phase, the transformer section that is the power supply section dedicated to each phase and the power supply IC (if the MOS type FET is not built-in, the MOS type FET is arranged separately) (3) A transformer section and a power supply IC, which are power supply sections dedicated to each phase, are arranged adjacent to the low voltage control circuit section 46, and (4) a connection section with a switching element made of IGBT is connected to each drive circuit 13 (5)
- the drive circuit that is paired with each phase has substantially the same shape and is arranged symmetrically with respect to the transformer section and the power supply IC.
- the low voltage control circuit 46, the photocoupler 47 to the photocoupler 49, the drive circuits 13 to the drive circuit 18, and the connection terminals of the IGBT modules are arranged in the direction in which the potential is sequentially increased, the electrical insulation is achieved. It is an advantageous arrangement for securing.
- the drive circuit that is paired with each phase has substantially the same shape and is symmetrical with respect to the transformer section and the power supply IC, so that the productivity is excellent.
- FIG. 4 is an exploded perspective view of the automotive power conversion control device as seen in FIG. 2, as seen from an oblique direction, and particularly shows the inside of the case housing the mounting circuit.
- an IGBT module that drives the electric motor 10 a bus bar that transmits high voltage to the electric motor 10, a cooling mechanism that cools the IGBT module, and the like are arranged inside the metal case 50. Description is omitted.
- the IGBT module 30 including the switching element Sn 1 and the switching element Sn 2 paired with the switching element Sn 1 and the switching element Sn 3 and the switching element Sn 4 paired with the switching element Sn 1 are provided on each side
- the IGBT module 31 and the IGBT module 32 including the switching element Sn5 and the switching element Sn6 paired with the IGBT module 31 are attached so as to be heat sinkable.
- Each switching element Sn1 to switching element Sn6 is provided with a control terminal 43, which extends along the outer wall direction of the case 50. These control terminals 43 are inserted into the terminal holes 53 of the control board 52 and are electrically connected to the circuit components of the control board by a method such as soldering.
- FIG. 5 shows a mounting surface showing the arrangement state of the circuit components of the control board 52. This mounting surface faces the inside of the case 50 in FIG. That is, the circuit components of the control board 52 are stored in the case 50.
- a low voltage control circuit portion 54 having a substantially rectangular shape for generating a control signal for the electric motor 10 near one side of the control board 52 is disposed, and each IGBT module is arranged around the outer three sides. Drive circuit and power supply unit are arranged.
- a drive circuit 13 for driving the U-phase switching element Sn1, and the switching element Sn1.
- a drive circuit 14 for driving the switching element Sn2 is provided.
- the control terminal 43 of IGBT which is switching element Sn1 and switching element Sn2 is electrically connected to the outer peripheral side of each drive circuit 13 and drive circuit 14.
- a transformer part 34 constituting a power supply part 33 and a power supply IC 36 incorporating a MOS FET switching element 35 are arranged.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- the transformer unit 34 and the power supply IC 36 constituting the power supply unit 33 are arranged adjacent to the left side of the low voltage control circuit unit 54.
- a driving circuit 16 for driving the switching element Sn4 forming the following is arranged.
- the control terminal 43 of IGBT which is switching element Sn3 and switching element Sn4 is electrically connected to the outer peripheral side of each drive circuit 15 and drive circuit 16.
- a power supply IC 36 including a transformer 34 constituting a power supply unit 33 dedicated to the V phase and a MOS FET switching element 35 is disposed.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- transformer unit 34 and the power supply IC 36 constituting the power supply unit 33 are arranged adjacent to one side of the upper center side of the low voltage control circuit unit 54.
- a drive circuit 17 for driving the W-phase switching element Sn5 and a switching paired with the switching element Sn5 are provided on one side of the right side of the low voltage control circuit unit 54 arranged on the control board 52 shown in FIG. 5.
- a drive circuit 18 for driving the element Sn6 is arranged on one side of the right side of the low voltage control circuit unit 54 arranged on the control board 52 shown in FIG. 5.
- a drive circuit 18 for driving the element Sn6 is arranged on one side of the right side of the low voltage control circuit unit 54 arranged on the control board 52 shown in FIG. 5.
- a drive circuit 18 for driving the element Sn6 is arranged on one side of the right side of the low voltage control circuit unit 54 arranged on the control board 52 shown in FIG. 5.
- a transformer unit 34 constituting a power supply unit 33 dedicated to the W phase and a power supply IC 36 incorporating a MOS FET switching element 35 are arranged.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- transformer unit 34 and the power supply IC 36 constituting the power supply unit 33 are disposed adjacent to one side of the right side of the low voltage control circuit unit 54.
- the exchange of electrical control signals between the low voltage control circuit unit 54 and each of the drive circuits 13 to 18 is interposed between the low voltage control circuit unit 54 and each of the drive circuits 13 to 18.
- a U-phase side photocoupler 47, a V-phase side photocoupler 48, and a W-phase side photocoupler 49 are used.
- the main features of the arrangement of the circuit components of the control board 52 are as follows: (1) the drive circuit 13 to the drive circuit 18 of each phase are arranged on each of the three sides of the low voltage control circuit unit 54; 2) Between the drive circuit of the switching element that is paired in each phase, a transformer section that is a power supply section dedicated to each phase and a power supply IC (if the MOS type FET is not built-in, the MOS type FET is arranged separately) (3) The transformer section and the power supply IC, which are dedicated power supply sections for each phase, are disposed adjacent to the low-voltage control circuit section 54, and (4) each connection section with a switching element made of IGBT is provided. It is arranged outside the drive circuit 13 to the drive circuit 18.
- the drive circuit 13 and the drive circuit 14, the drive circuit 15 and the drive circuit 16, and the drive circuit 17 and the drive circuit 18 are substantially the same in plan view with respect to the paper surface. It may be configured so as to be symmetrical and arranged symmetrically with respect to the transformer 34 and the power supply IC 36.
- the low voltage control circuit unit 54, the photocoupler 47 to the photocoupler 49, the drive circuits 13 to the drive circuit 18, and the connection terminals of the IGBT modules are arranged in the direction in which the potential is sequentially increased, This is an advantageous arrangement for ensuring insulation.
- the three-phase drive circuit and the like are divided into three sides for each side of the low-voltage control circuit unit 54, it is easy to apply when a square case is required in the layout on the vehicle. .
- the drive signal wiring from the low voltage control circuit unit 54 can be evenly and shortened for each phase of the drive circuit, signal deterioration and signal transmission delay and drive due to the length of the control signal and drive signal wiring lengthened. The effect that the difference of the signal delay by every circuit can be prevented can be expected.
- FIG. 6 is an exploded perspective view of the automobile power conversion control device as seen in FIG. 2, as seen from an oblique direction, and particularly shows the inside of the case that houses the mounting circuit.
- an IGBT module that drives the electric motor 10 a bus bar that transmits high voltage to the electric motor 10, a cooling mechanism that cools the IGBT module, and the like are arranged inside the metal case 60. Description is omitted.
- an IGBT module 30 including a switching element Sn1 and a switching element Sn2 paired therewith, an IGBT module 31 including a switching element Sn3 and a switching element Sn4 paired therewith, and a switching element
- An IGBT module 32 composed of Sn5 and a switching element Sn6 paired therewith is mounted side by side.
- Each switching element Sn1 to switching element Sn6 is provided with the control terminal 43 as described above, and this control terminal 43 extends along the opening end direction of the case 60.
- These control terminals 43 are inserted into the terminal holes 62 of the control board 61 and are electrically connected to the circuit components of the control board 61 by a method such as soldering.
- FIG. 7 shows a mounting surface showing the arrangement state of the circuit components of the control board 61.
- This mounting surface faces the inside of the case 60 in FIG. That is, the circuit components of the control board 61 are stored in the case 60.
- a low voltage control circuit unit 63 for generating a control signal for the electric motor 10 is arranged near the right region of the control board 61, and each IGBT module is driven in the left region of the low voltage control circuit unit 63.
- a circuit and a power supply unit are arranged.
- the width of the left region and the right region is appropriately selected depending on the size of the low voltage control circuit unit 63, the drive circuit of each phase, and the power supply unit.
- a drive circuit 13 that drives the U-phase switching element Sn1 and a drive circuit 14 that drives the switching element Sn2 paired with the switching element Sn1.
- the drive circuit 13 and the drive circuit 14 are electrically connected to a control terminal 43 of an IGBT that is a switching element Sn1 and a switching element Sn2.
- a transformer part 34 constituting a power supply part 33 and a power supply IC 36 incorporating a MOS FET switching element 35 are arranged.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- the drive circuit 13 and the drive circuit 14 are arranged side by side in the drawing. That is, it is arranged in two stages in the longitudinal direction so that any one drive circuit faces the low voltage control circuit unit 63.
- a drive circuit 15 for driving the V-phase switching element Sn3 and a drive circuit 16 for driving the switching element Sn4 paired with the switching element Sn3 are arranged.
- the drive circuit 15 and the drive circuit 16 are electrically connected to the IGBT control terminals of the switching element Sn3 and the switching element Sn4.
- a power supply IC 36 including a transformer 34 constituting a power supply unit 33 dedicated to the V phase and a MOS FET switching element 35 is disposed.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- the drive circuit 15 and the drive circuit 16 are arranged side by side in the drawing. That is, it is arranged in two stages in the longitudinal direction so that any one drive circuit faces the low voltage control circuit unit 63.
- a drive circuit 17 for driving the W-phase switching element Sn5 and a drive circuit 18 for driving the switching element Sn6 paired with the switching element Sn5 are arranged. ing.
- the drive circuit 17 and the drive circuit 18 are electrically connected to the control terminals of the IGBTs that are the switching element Sn5 and the switching element Sn6.
- a transformer unit 34 constituting a power supply unit 33 dedicated to the W phase and a power supply IC 36 incorporating a MOS FET switching element 35 are arranged.
- the power supply IC 36 may be separate from the switching element 35. In this case, the switching element 35 is arranged near the power supply IC 36.
- the drive circuit 17 and the drive circuit 18 are arranged side by side in the drawing. That is, it is arranged in two stages in the longitudinal direction so that any one drive circuit faces the low voltage control circuit unit 63.
- each phase is attached over three rows by a combination of a drive circuit, a power supply unit, and a drive circuit.
- the exchange of electrical control signals between the low voltage control circuit unit 63 and each of the drive circuits 13 to 18 is interposed between the low voltage control circuit unit 63 and each of the drive circuits 13 to 18.
- a U-phase side photocoupler 47, a V-phase side photocoupler 48, and a W-phase side photocoupler 49 are used.
- the U-phase side photocoupler 47, the V-phase side photocoupler 48, and the W-phase side photocoupler 49 are located on substantially the same line. That is, since the drive circuits of the respective phases are arranged opposite to one side of the low voltage control circuit unit 63, all the photocouplers 47 to 49 are arranged along one side of the low voltage control circuit unit 63. Can do. Of course, the photocoupler and each of the drive circuits 13 to 18 are connected by wiring.
- the main features of the arrangement of the circuit components of the control board 61 are as follows: (1) The drive circuits 13 to 18 of each phase are arranged in two stages in the longitudinal direction so as to face one side of the low voltage control circuit section 63. And (2) a transformer section, which is a power supply section dedicated to each phase, and a power supply IC (MOS type if it is not built-in MOS type FET) between the drive circuits of the switching elements that are paired in each phase. (3) U-phase side photocoupler 47, V-phase side photocoupler 48, and W-phase side photocoupler 49 are identical along one side of low-voltage control circuit unit 63. It is arranged on the line.
- the drive circuit 13 and the drive circuit 14, the drive circuit 15 and the drive circuit 16, and the drive circuit 17 and the drive circuit 18 have substantially the same shape in plan view with respect to the paper surface.
- the transformer 34 and the power supply IC 36 may be arranged symmetrically with respect to the boundary.
- the low voltage control circuit unit 63, the photocoupler 47 to the photocoupler 49, the drive circuits 13 to the drive circuit 18, and the connection terminals of the IGBT modules are arranged in the direction in which the potential is sequentially increased, This is an advantageous arrangement for ensuring insulation.
- the photocoupler installation area can be reduced as shown in FIGS. 3 and 5, and as a result, the effect of reducing the substrate area can be expected.
- SYMBOLS 10 Electric motor, Sn1-Sn6 ... Switching element consisting of IGBT, 13-18 ... Drive circuit, 30-32 ... Unit IGBT module, 33 ... Power supply part, 34 ... Transformer part, 35 ... Switching element consisting of MOS type FET, 36 ... Power supply IC, 38 ... Primary winding, 39, 40 ... Secondary winding, 41 ... Case, 42 ... Outer wall, 43 ... Control terminal, 44 ... Control board, 45 ... Terminal hole, 46 ... Low voltage control circuit section , 47 ... U-phase side photocoupler, 48 ... V-phase side photocoupler, 49 ... W-phase side photocoupler, 50 ... Case, 51 ... Outer wall, 52 ... Control board, 53 ... Terminal hole, 54 ... Low voltage control circuit section , 60 ... Case, 61 ... Control board, 62 ... Terminal hole, 63 ... Low voltage control circuit section.
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Abstract
Description
各駆動回路13及び駆動回路14の外周側にはスイッチング素子Sn1及びスイッチング素子Sn2であるIGBTの制御端子43が電気的に接続されている。
Claims (13)
- 電動機のU相巻線と接続された一対のU相側パワー半導体素子と、前記電動機のV相巻線と接続された一対のV相側パワー半導体素子と、前記電動機のW相巻線と接続された一対のW相側パワー半導体素子と、前記U相側パワー半導体素子を駆動する一対のU相側駆動回路と、前記V相側パワー半導体素子を駆動する一対のV相側駆動回路と、前記W相側パワー半導体素子を駆動する一対のW相側駆動回路と、前記一対のU相側駆動回路に電源を供給するU相側電源供給部と、前記U相側直流電源とは独立して前記一対のV相側駆動回路に電源を供給するV相側電源供給部と、前記U相側直流電源及び前記V相側直流電源とは独立して前記一対のW相側駆動回路に電源を供給するW相側電源供給部とを備えたことを特徴とする自動車用電力変換制御装置。
- 請求項1に記載の自動車用電力変換制御装置において、
前記一対のU相側パワー半導体素子の一方のエミッタと他方のコレクタとが前記U相側巻線に接続され、前記一対のV相側パワー半導体素子の一方のエミッタと他方のコレクタとが前記V相側巻線に接続され、前記一対のW相側パワー半導体素子の一方のエミッタと他方のコレクタとが前記W相側巻線に接続され、
前記一対のU相側パワー半導体素子の夫々のゲートが前記一対のU相側駆動回路と接続され、前記一対のV相側パワー半導体素子の夫々のゲートが前記一対のV相側駆動回路と接続され、前記一対のW相側パワー半導体素子の夫々のゲートが前記一対のW相側駆動回路と接続され、
前記一対のU相側駆動回路が少なくともトランス部と電源ICを含むU相側直流電源と接続され、前記一対のV相側駆動回路が少なくともトランス部と電源ICを含むV相側直流電源と接続され、前記一対のW相側駆動回路が少なくともトランス部と電源ICを含むW相側直流電源と接続されていることを特徴とする自動車用電力変換制御装置。 - 請求項2に記載の自動車用電力変換制御装置において、
前記U相側直流電源、V相側直流電源、及びW相側直流電源は少なくとも鉄心と一次巻線と夫々の駆動回路に接続された二次巻線とを含んでいることを特徴とする自動車用電力変換制御装置。 - 直流電流を3相の交流電流に変換して電動機を駆動するパワー半導体素子よりなるパワー半導体モジュールと、前記パワー半導体モジュールを駆動する駆動回路を備えた自動車用電力変換制御装置において、
前記パワー半導体モジュール及び前記駆動回路は前記3相の交流電流に対応して3個の単位半導体モジュールと3個の単位駆動回路より構成され、前記単位駆動回路の電源供給部をそれぞれ独立して設けたことを特徴とする自動車用電力変換制御装置。 - 直流電流を3相の交流電流に変換するため一相毎に一対のパワー半導体素子を備えた3個の単位半導体モジュールが収容された金属製のケースと、前記単位半導体モジュールの一対のパワー半導体素子を駆動する3個の単位駆動回路、前記単位駆動回路にそれぞれ独立して電力を供給する3個の電源供給装置、及び前記単位駆動回路を制御する低電圧制御回路部を設けた制御基板を備え、
制御基板には、その中央部付近に前記低電圧制御回路部が配置され、前記低電圧制御回路部の対向する一方の一辺の外方向側に2相の単位駆動回路とこれの電源供給装置を配置し、前記低電圧制御回路部の対向する他方の一辺側に残りの1相の単位駆動回路とこれの電源供給装置を配置したことを特徴とする自動車用電力変換制御装置。 - 請求項5に記載の自動車用電力変換制御装置において、
前記単位駆動回路を構成する一対の駆動回路は並べて配置されており、前記一対の駆動回路の間に少なくとも共通の電源供給装置が配置されていることを特徴とする自動車用電力変換制御装置。 - 請求項6に記載の自動車用電力変換制御装置において、
前記共通の電源供給装置を境にして、ほぼ同形状の前記駆動回路が対称に配置されていることを特徴とする自動車用電力変換制御装置。 - 直流電流を3相の交流電流に変換するため一相毎に一対のパワー半導体素子を備えた3個の単位半導体モジュールが収容された金属製のケースと、前記単位半導体モジュールの一対のパワー半導体素子を駆動する3個の単位駆動回路、前記単位駆動回路にそれぞれ独立して電力を供給する3個の電源供給装置、及び前記単位駆動回路を制御する低電圧制御回路部を設けた制御基板を備え、
制御基板には、その一辺に寄せてほぼ矩形状の前記低電圧制御回路部が配置され、前記低電圧制御回路部の三辺に夫々1相毎に単位駆動回路とこれの電源供給装置を配置したことを特徴とする自動車用電力変換制御装置。 - 請求項8に記載の自動車用電力変換制御装置において、
前記単位駆動回路を構成する一対の駆動回路は並べて配置されており、前記一対の駆動回路の間に少なくとも共通の電源供給装置が配置されていることを特徴とする自動車用電力変換制御装置。 - 請求項9に記載の自動車用電力変換制御装置において、
前記共通の電源供給装置を境にして、ほぼ同形状の駆動回路が対称に配置されていることを特徴とする自動車用電力変換制御装置。 - 直流電流を3相の交流電流に変換するため一相毎に一対のパワー半導体素子を備えた3個の単位半導体モジュールが収容された金属製のケースと、前記単位半導体モジュールの一対のパワー半導体素子を駆動する3個の単位駆動回路、前記単位駆動回路にそれぞれ独立して電力を供給する3個の電源供給装置、及び前記単位駆動回路を制御する低電圧制御回路部を設けた制御基板を備え、
制御基板には、一方の領域に寄せて前記低電圧制御回路部が配置され、前記低電圧制御回路部の他方の領域に1相毎に単位駆動回路とこれの電源供給装置を対として3列に配置したことを特徴とする自動車用電力変換制御装置。 - 請求項11に記載の自動車用電力変換制御装置において、
前記単位駆動回路を構成する一対の駆動回路は並べて配置されており、前記一対の駆動回路の間に少なくとも共通の電源供給装置が配置されていることを特徴とする自動車用電力変換制御装置。 - 請求項12に記載の自動車用電力変換制御装置において、
前記共通の電源供給装置を境にして、ほぼ同形状の駆動回路が対称に配置されていることを特徴とする自動車用電力変換制御装置。
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