WO2018223484A1 - Power electronic controller, and electric car - Google Patents

Power electronic controller, and electric car Download PDF

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Publication number
WO2018223484A1
WO2018223484A1 PCT/CN2017/092489 CN2017092489W WO2018223484A1 WO 2018223484 A1 WO2018223484 A1 WO 2018223484A1 CN 2017092489 W CN2017092489 W CN 2017092489W WO 2018223484 A1 WO2018223484 A1 WO 2018223484A1
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WO
WIPO (PCT)
Prior art keywords
power module
module assembly
output
electronic controller
inverter power
Prior art date
Application number
PCT/CN2017/092489
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French (fr)
Chinese (zh)
Inventor
张超
王新国
黄祥飞
Original Assignee
蔚来汽车有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201720640198.9U external-priority patent/CN207368890U/en
Priority claimed from CN201710412463.2A external-priority patent/CN108988655B/en
Application filed by 蔚来汽车有限公司 filed Critical 蔚来汽车有限公司
Publication of WO2018223484A1 publication Critical patent/WO2018223484A1/en

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the invention belongs to the technical field of AC motor drive control, and relates to a Power Electronic Unit (PEU) for providing an AC input to an AC motor and controlling the AC motor.
  • PEU Power Electronic Unit
  • High-power AC motors such as induction motors or permanent magnet synchronous motors
  • induction motors or permanent magnet synchronous motors are widely used in electric vehicles and used as drive motors.
  • drive motors With the increasing popularity of electric vehicles, the market's power density, cost, safety and other aspects of motor drive systems. Make higher demands.
  • the power electronic controller PEU is used to control and adjust the rotational speed of the drive motor, and the PEU simultaneously inverts the DC high voltage power input, for example, from the power battery, into an AC high voltage power, as a current input of the drive motor.
  • the main functions of PEU include the following two points:
  • an inverter function that is, a DC-AC conversion function, for example, it can convert the high-voltage direct current input from the power battery into a three-phase high-voltage alternating current transmission to the drive.
  • the control signal interface circuit and the drive motor control circuit the signal transmitted by the vehicle controller VCU (Vehicle Control Unit) and the signals of the motor temperature, speed, power, etc. are received, corresponding feedback is provided, and the signal is fed back to the VCU. And drive the motor to play the role of drive motor control.
  • VCU Vehicle Controller Unit
  • the power electronic controller adopts a single traditional three-phase full-bridge inverter power module, which is easily limited by the maximum allowable current of the power device for a driving motor of a large electric vehicle, for example, a PEU currently in the market.
  • the peak power does not exceed 200 KW, and the peak phase current does not exceed 500 A. Therefore, the power output of the drive motor will be limited; and, the single conventional three-phase full-bridge inverter power module, the selection and cost of the power device are not well controlled. Excessive power will make it difficult to reduce the volume and cost, and the cooling efficiency is also low.
  • the present invention provides the following technical solutions.
  • a power electronic controller for providing an AC input to an AC motor and controlling the AC motor includes:
  • the first inverter power module assembly and the second inverter power module assembly are connected in parallel from the same high voltage DC input terminal of the power electronic controller to an external high voltage DC power source, and output the AC output in parallel to Its AC output;
  • a cooling flow path shared by the first inverter power module assembly and the second inverter power module assembly is disposed in the cooling interlayer.
  • a power electronic controller is provided, inside the power electronic controller, electrically connected to the high voltage direct current input terminal for dividing the external high voltage direct current power supply into two direct current An input DC busbar assembly; the DC busbar assembly has two parallel first DC rows and a second DC row respectively corresponding to the two DC inputs, the first inverter power module total The second inverter power module is electrically connected to the first DC row and the second DC row, respectively.
  • a power electronic controller wherein the DC bus bar assembly further includes a filter capacitor and a filter inductor.
  • a power electronic controller wherein the first inverter power module assembly and the second inverter power module assembly each include:
  • the heat dissipating components respectively disposed on the switching power modules of the first inverter power module assembly and the second inverter power module assembly at least partially protrude into the cooling flow channel.
  • the capacitances of the first inverter power module assembly and the second inverter power module assembly are respectively attached to the upper surface and the lower surface of the cooling interlayer, or at least partially disposed in the cooling In the cooling flow channel of the interlayer.
  • a power electronic controller according to an embodiment of the present invention, wherein the first inverter power module assembly includes a first AC output bus interface for forming the AC output terminal, and the second inverter power module total The second AC output bus interface is configured to form the AC output.
  • the power electronic controller according to an embodiment of the present invention, wherein the second AC output bus interface/first AC output bus interface is provided with a transfer bus for forming the AC output, wherein the The first end of the transfer bus bar is connected to the second AC output bus interface/first AC output bus interface.
  • a power electronic controller wherein a height of the transit busbar is equal to a height difference of the first AC output busbar interface and a second AC output busbar interface, the transit busbar The second end and the first AC output bus interface/the second AC output bus interface are arranged in a straight line at the same height.
  • the power electronic controller according to an embodiment of the present invention, wherein the first AC output bus interface/second AC output bus interface is provided with a first transfer output bus for forming the AC output, corresponding to the The second end of the transfer bus bar is provided with a second transfer output bus bar for constituting the AC output terminal, and the first transfer output bus bar and the second transfer output bus bar are arranged side by side in a straight line.
  • the power electronic controller further includes a filter inductor disposed on the first transit output bus and the second transit output bus.
  • a power electronic controller wherein the first inverter power module assembly and the second inverter power module assembly each further include a current sensor.
  • a power electronic controller has three phase lines corresponding to a first inverter power module assembly, a first three-phase AC output, and a total corresponding to the second inverter power module.
  • the three phase lines of the second three-phase AC output are corresponding to a first inverter power module assembly, a first three-phase AC output, and a total corresponding to the second inverter power module.
  • the three phase lines corresponding to the first three-phase AC output and the three phase lines corresponding to the second three-phase AC output are electrically connected to each other on the three-phase winding of the three-phase AC motor.
  • the three phase lines corresponding to the first three-phase AC output and the three phase lines corresponding to the second three-phase AC output are respectively electrically connected to the six-phase winding of the six-phase AC motor.
  • a power electronic controller configured as a substantially box structure, the first inverter power module assembly, the cooling interlayer, and the second inverter power module assembly They are used to form the upper, middle and lower layers of the box structure, respectively.
  • cooling interlayer is configured as a part of a main box of the box structure, the first inverter power module assembly and a second inverter power module
  • the assemblies are symmetrically distributed on the upper and lower sides of the cooling interlayer.
  • a power electronic controller according to an embodiment of the present invention, wherein the power electronic controller further includes a low voltage control circuit and a shielding plate, wherein the shielding plate is disposed at the low voltage control circuit and the first inverter power The electromagnetic interference between the module assembly or the second inverter power module assembly is used to shield the high voltage current signal.
  • an electric vehicle which includes an AC motor for outputting power, and a power electronic controller as described above.
  • the power electronic controller PEU of the present invention has a first inverter power module assembly and a second inverter power module assembly arranged in parallel, and they share a cooling flow channel in the cooling interlayer to improve the power output and current output capability of the PEU. At the same time, it can improve the reliability of its work, and has better heat dissipation efficiency and compact overall structure.
  • FIG. 1 and 2 are schematic diagrams showing the external three-dimensional structure of a power electronic device according to an embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a power electronic device in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of an internal DC busbar assembly and an inverter power module assembly of a power electronic device according to an embodiment of the invention.
  • FIG. 5 is a schematic diagram showing the structure of a DC bus bar assembly inside a power electronic device according to an embodiment of the invention.
  • FIG. 6 is a partial structural diagram of an inverter power module assembly of a power electronic device according to an embodiment of the invention.
  • FIG. 7 is a schematic structural diagram of an AC output end of an inverter power module assembly of a power electronic device according to an embodiment of the invention.
  • FIG. 8 is a schematic diagram showing the internal structure of a power electronic device according to an embodiment of the present invention, in which a low voltage control circuit and a shield plate are shown.
  • FIG. 9 is a schematic diagram of a cooling flow path inside a power electronic device in accordance with an embodiment of the present invention.
  • Figure 10 is a schematic diagram of the cooling principle of a power electronic device in accordance with an embodiment of the present invention.
  • the high direction of the power electronic controller is defined as the z direction
  • the long direction of the power electronic controller is defined as the x direction
  • the direction perpendicular to the z direction and the x direction that is, power electronics
  • the width direction of the controller is defined as the y direction. It is to be understood that the definitions of these directions are for relative description and clarification, which may vary accordingly depending on the change in the orientation of the power electronic controller.
  • orientation terms of "upper” and “lower” are defined based on the z direction unless otherwise specified; and, it should be understood that these directional terms are relative concepts and they are used for With respect to the description and clarification, it may vary accordingly depending on the change in the orientation in which the stabilizing device is mounted.
  • the power electronic controller PEU10 according to an embodiment of the present invention will be described in detail below with reference to FIG. 1 to FIG.
  • the PEU 10 is exemplarily applied to an AC motor that drives an electric vehicle (including a pure electric vehicle and a hybrid vehicle), which can provide a high-power three-phase high-voltage AC output (U1, V1, and W1, U2, V2, and W2) for the AC motor. And provide greater peak power and Peak current output.
  • the PEU 10 is integrally provided as a substantially square box structure 11 having a high voltage DC input terminal 101 externally for accessing a high voltage DC power source, for example, two high voltage DC input terminals. 101 is respectively connected to the positive and negative output ends of the power battery pack; and, the outside of the PEU 10 has an inlet and outlet 301 corresponding to the internal cooling flow passage 310, and a liquid (for example, water) for cooling can flow in and out cyclically from the inlet and outlet 301.
  • the specific shape design of the outer structure of the PEU 10 is not limitative, and its shape can be designed according to factors such as its position mounted on an electric car. In the following description, it will be understood that the PEU 10 having the box structure 11 of the embodiment of the present invention has an overall compact advantage.
  • the PEU10 is mainly provided with an inverter power module assembly 200 and an inverter power module assembly 400.
  • the two inverter power module assemblies 200 and 400 are mainly used for converting from DC-AC; from the perspective of electrical connection structure
  • the input terminals are simultaneously connected to the external high-voltage DC power supply in parallel, and the inverter power module assemblies 200 and 400 output three-phase AC U1, V1 and W1 and three-phase AC U2, V2 and W2 in parallel; Looking (as shown in Figure 3), the inverter power module assemblies 200 and 400 can be arranged in parallel with a cooling interlayer 300 disposed therebetween, such that the inverter power module assembly 200, the cooling interlayer 300, and the inverter power module assembly 400 is used to form the upper layer, the intermediate layer, and the lower layer of the box structure 11, respectively.
  • the intermediate layer corresponding to the cooling interlayer 300 may be a part of a main casing of a casing structure 11 formed of, for example, an aluminum alloy, and the main casing serves as a main body of the casing structure 11, which may be integrally formed and used to fix other parts included in the PEU 10 A component that has a certain strength and thermal conductivity.
  • a cooling flow path 310 through which the coolant can circulate can be formed, thereby forming a common cooling of the inverter power module assemblies 200 and 400.
  • the interlayer 300 which can simultaneously cool the inverter power module assemblies 200 and 400, has high cooling efficiency and can achieve a more compact arrangement on the cooling structure.
  • the inverter power module assemblies 200 and 400 each have substantially similar structures as shown in FIG. 4 and FIG. 6, which are symmetrically distributed up and down on the upper and lower sides of the cooling interlayer 300, and have respective uses.
  • the heat dissipating members 221 and 421 may be columns that are easily thermally conductive, as shown in FIGS. 3, 7, and 9, the heat dissipating members 221 and the counter on the inverter power module assembly 200.
  • the heat dissipating members 421 on the variable power module assembly 400 are disposed opposite each other and at least partially extend into their shared cooling interlayer
  • the cooling runner 310 of 300 increases the heat dissipation efficiency of the inverter power module assembly.
  • the cooling principle of the PEU 10 is as shown in FIG. 10 .
  • the core of the inverter power module assembly 200 needs to be cooled.
  • the component that is cooled is a high-power switching power module 220 whose main heating element is a power switching element (eg, IGBT) 222 of the switching power module 220.
  • the component of the inverter power module assembly 400 that is particularly in need of cooling is a high power switching power module 420 whose primary heating element is a power switching element (eg, IGBT) 422 of the switching power module 420.
  • the liquid in the cooling flow path 310 circulates in the direction as illustrated in FIG. 10, thereby simultaneously taking away the heat dissipated by the power switching elements 222 and 422, so that one cooling interlayer 300 can simultaneously provide heat dissipation for the two inverter power module assemblies. , thereby improving heat dissipation efficiency.
  • the inside of the PEU 10 is further provided with a DC bus bar assembly 100 electrically connected to the high voltage DC input terminal 101, and the DC bus bar assembly 100 is used for external high voltage DC power supply (for example, a power battery pack)
  • the high voltage DC output is divided into two DC inputs, so that the inverter power module assembly 200 and the inverter power module assembly 400 have the same DC input at the same time.
  • the DC bus bar assembly 100 has two parallel first DC rows 120 and a second DC row 140 respectively corresponding to two DC inputs, each DC row 120 or 140 has two terminals, which are electrically connected to two
  • the DC input terminals 101 are respectively electrically connected to the positive and negative DC input terminals; the two first DC banks 120 and the second DC banks 140 are shunted in parallel to realize the DC input of the DC bus bar assembly 100.
  • the inverter power module assembly 200 and the inverter power module 400 are electrically connected to the first DC line 120 and the second DC line 140 respectively, thereby respectively connecting the inverter power module assembly 200 and the inverter power module 400 to each other independently.
  • One way DC input power is provided to the first DC line 120 and the second DC line 140 respectively.
  • the first DC row 120 and/or the second DC row 140 may specifically be DC copper bars, and the first DC row 120 and the second DC row 140 have the same structural arrangement and use the same material, for example, the first DC row. 120 and second DC row 140 have the same cross-sectional area.
  • the DC bus bar assembly 100 further includes a filter capacitor 110 and a filter inductor 130.
  • the filter capacitor 110 can be, for example, an X capacitor and a Y capacitor, which can filter the high voltage DC input to ensure stable and reliable input current.
  • the filter inductor 130 can be an inductor device such as a ferrite inductor, which can be used from a power battery pack. The high-voltage DC input DC high-voltage electric clutter is filtered to ensure the EMC performance of the PEU10.
  • the inverter power module assembly 200 mainly includes a capacitor 210, a switching power module 220, and a driving circuit 230.
  • the inverter power module assembly 400 also has a class.
  • the structure mainly includes a capacitor 410, a switching power module 420, and a driving circuit 430.
  • the capacitors 210 and 410 are optionally thin film capacitors that can be connected across the respective DC input terminals to form a DC-link capacitor, and are therefore also referred to as DC coupling capacitors.
  • the capacitors 210 and 410 may generate a ripple current to generate heat when they are in operation, in an embodiment, the capacitors 210 and 410 may be attached to the upper and lower surfaces of the cooling interlayer 300, respectively, or At least a portion of the capacitors 210 and 410 are disposed directly in the cooling runner 310 to cool the capacitors 210 and 410 using the cooling interlayer 300.
  • the switching power modules 220 and 420 generate a large amount of heat during the inverter operation and are liquid-cooled by the cooling interlayer 300.
  • the switching power modules 220 and 420 can simultaneously output three-phase alternating current, thereby improving the power output and current output capability of the PEU 10, and easily meeting the high power output requirements of the AC motor in the electric vehicle.
  • the PEU 10 can have a rated power of 60 kW, a peak power of 240 kW, and a peak current of 930 amps.
  • the other can continue to operate and provide a certain power AC output, so that the AC motor can continue to drive the electric vehicle under relatively low power conditions, and reliability is obtained. Improvement will help prevent the occurrence of vehicle breakdown and so on.
  • Switching power modules 220 and 420 can include, for example, three inverter sub-modules to invert to form a 3-phase AC output. It should be noted that if the switching power modules 220 and 420 need to output an AC output other than the three phases, the number of output phases can be adjusted by setting the number of the inverter submodules.
  • the power switching elements 222 and 422 used for each inverter sub-module may be, but are not limited to, IGBTs (Insulated Gate Bipolar Transistors).
  • the PEU 10 further has an AC output terminal 24 having two sets of AC output busbar interfaces corresponding to two inverter power module assemblies, namely, a first AC output bus bar interface 240 and a second.
  • the AC output bus interface 440 as shown in FIG. 7, the first AC output bus interface 240 is corresponding to the switch power module 220, and the second AC output bus interface 440 is corresponding to the switch power module 420, the first AC output sink
  • the row interface 240 corresponds to the three-phase AC output end of the inverter power module assembly 200, and the three interfaces respectively output the U1 phase, the V1 phase and the W1 phase, and the second AC output bus bar interface 440 corresponds to the inverter power module assembly.
  • the three-phase AC output of 400 and the three interfaces output the U2 phase, the V2 phase, and the W2 phase, respectively.
  • the inverter power module assembly 200 and the inverter power module assembly 400 are arranged in parallel in the z direction, their corresponding first AC output confluences
  • the row interface 240 and the second AC output bus bar interface 440 have a height difference in the z direction.
  • the second AC output bus bar interface 440 is provided with a transfer bus bar 442 for constituting the AC output terminal 24, wherein the transfer bus bar 442 is provided.
  • the first end is connected to the second AC output bus interface 440; the height of the transfer bus bar 442 is substantially equal to the height difference between the first AC output bus interface 240 and the second AC output bus interface 440, thereby, the transfer bus
  • the second end of the 442 and the first AC output bus bar interface 240 are arranged in a straight line at the same height.
  • the transfer bus 442 transfers the AC output of the inverter power module assembly 400 to the same height of the AC output of the corresponding inverter power module assembly 200, facilitating the extraction of the two three-phase AC outputs from the PEU 10.
  • the first AC output bus interface 240 may be disposed corresponding to the first AC output bus interface 240, and the first end of the transfer bus bar is connected to the first AC output bus interface 240.
  • the second end is disposed at the same height as the second AC output bus interface 440 and arranged in a straight line; thus, the transfer bus bar transfers the AC output of the inverter power module assembly 200 to the corresponding inverter power module assembly.
  • the transfer bus bar 442 can be specifically a transfer copper bar.
  • the corresponding AC output bus interface 240 is provided with a first switching output bus 250 for forming an AC output terminal 24
  • the second end of the corresponding switching bus bar 442 is provided with an AC output.
  • the second transfer output bus bar 450 of the terminal 24, the first transfer output bus bar 250 and the second transfer output bus bar 450 are arranged side by side in a straight line (for example, in the y direction) for convenient connection to the input end of the AC motor.
  • the AC output terminal 24 of the PEU 10 can be understood as an AC output terminal assembly, which mainly includes a first AC output bus bar interface 240, a second AC output bus bar interface 440, and an adapter bus bar. 442.
  • the AC output terminal 24 is provided with a filter inductor 245, and the filter inductor 245 can be integrally disposed on the first transfer output bus bar 250 and the second transfer output bus bar 450.
  • the filter inductor can be integrated.
  • the first switching output bus 250 and the second switching output bus 450 arranged side by side in a straight line are filtered; the filter inductor 245 may also be arranged in a line side by side with six filter inductors, for the first switching output bus 250 and The six outputs of the second switching output bus 450 are separately filtered. Filter
  • the wave inductor 245 ensures the stability of the AC output signal.
  • the material selected by the filter inductor 245 may be, but not limited to, a ferrite or an amorphous material; the filter inductor 245 may be integrated in the main case by a plastic part or the like, or integrated on the main case cover.
  • drive circuits 230 and 430 may be specifically provided in the form of a circuit board that provides switch drive signals for switching power modules 220 and 420, respectively, thereby controlling the conduction of each of power switching elements 222 and 422. And shutting down.
  • the inverter power module assembly 200 further includes a current sensor 260.
  • the inverter power module assembly 400 is also provided with a current sensor (not shown).
  • the power electronic controller 10 further includes a low voltage control circuit 500, which can be used, for example, to control the drive circuits 230 and 430 for implementing the function of controlling the AC motor.
  • the low voltage control circuit 500 operates with a low voltage and a small current. Therefore, it is easily used by the DC busbar assembly 100 inside the PEU 10, the capacitors 210 and 410, the switching power modules 220 and 420, the first AC output bus interface 240, and the second.
  • the corresponding low voltage control circuit 500 is further provided with a shielding plate 600, and the shielding plate 600 can be disposed in the low voltage control circuit 500 and the inverter power module. Between the assemblies 200, a low voltage control circuit 500 and an inverter power module assembly 400 may also be provided, which have the function of isolating the electromagnetic interference of the high voltage current signal.
  • the shielding plate 600 is designed as a metal sheet metal member, and the material thereof is galvanized carbon steel; the surrounding area of the sheet metal member includes a rib, so that the shielding plate is structurally wrapped with the low voltage control circuit 500 to realize a low voltage control circuit. 500 signal isolation.
  • the low voltage control circuit 500 can be embodied as a circuit board.
  • the first transit output bus bar 250 can output three-phase AC output (U1, V1, W1)
  • the second transit output bus bar 450 can output another three-phase AC output (U2). V2, W2), that is, the AC output 24 has six phase lines corresponding to two three-phase AC outputs.
  • the AC motor is a three-phase AC motor
  • the three-phase AC output of the first switching output bus 250 and the three-phase AC output of the second switching output bus 450 are electrically in phase, and they can simultaneously be the three-phase motor Providing superimposed three-phase AC output.
  • U1 and U2, V1 and V2, W1 and W2 are respectively electrically connected to the three-phase winding of the three-phase AC motor, so that the corresponding three-phase AC is electrically connected to the three-phase AC motor.
  • the windings On the windings.
  • the AC motor is a six-phase AC motor
  • the three-phase AC output of the first switching output bus 250 and the three-phase AC output of the second switching output bus 450 are electrically separated by, for example, 60°, the first turn Three-phase AC connected to the output bus 250
  • the output and the three-phase AC output combination of the second switching output bus 450 provide a six-phase AC output for the six-phase AC motor, for example, U1, U2, V1, V2, W1, and W2 are electrically connected to the six-phase AC motor, respectively.
  • U1, U2, V1, V2, W1, and W2 are electrically connected to the six-phase AC motor, respectively.
  • the electric vehicle of the embodiment of the present invention When the PEU 10 of the above embodiment of the present invention is applied to an electric vehicle to drive an AC motor, the electric vehicle of the embodiment of the present invention is formed.
  • the electric vehicle of the embodiment of the present invention may use a three-phase alternating current motor or a six-phase alternating current motor.
  • U1 and U2, V1 and V2, W1 and W2 are respectively connected to the three-phase windings of the three-phase AC motor.
  • the three-phase AC output of the first transfer output bus 250 and the three-phase AC output of the second transfer output bus 450 are electrically separated by, for example, 60°, U1, U2 V1, V2, W1 and W2 are respectively connected to the six-phase winding of the six-phase AC motor.
  • the PEU 10 of the embodiment of the present invention is not limited to being applied to an electric vehicle. According to the above disclosure, the PEU 10 of the embodiment of the present invention can also be applied to a machine having an application requirement of an AC motor similar to an electric vehicle or On the device.

Abstract

A power electronic controller (10), configured to provide an alternating current motor with an alternating current input and control the alternating current motor. The controller comprises: a first inverter power module assembly (200) and a second inverter power module assembly (400) arranged in parallel; a cooling layer (300) sandwiched between the first inverter power module assembly (200) and the second inverter power module assembly (400); and a cooling flow channel (310) arranged in the cooling layer and shared by the first inverter power module assembly (200) and the second inverter power module assembly (400). The power electronic controller (10) has a large power output and current output capability, superior operational reliability, excellent heat dissipation efficiency, and a compact overall structure.

Description

电力电子控制器和电动汽车Power electronic controller and electric car 技术领域Technical field
本发明属于交流电机驱动控制技术领域，涉及用于为交流电机提供交流输入并控制所述交流电机的电力电子控制器(Power Electronic Unit，PEU)。The invention belongs to the technical field of AC motor drive control, and relates to a Power Electronic Unit (PEU) for providing an AC input to an AC motor and controlling the AC motor.
背景技术Background technique
大功率的交流电机(例如感应电机或永磁同步电机)在诸如电动汽车领域广泛应用并用作驱动电机，随着电动汽车的不断普及，市场对电机驱动系统的功率密度、成本、安全性等方面提出更高的要求。High-power AC motors (such as induction motors or permanent magnet synchronous motors) are widely used in electric vehicles and used as drive motors. With the increasing popularity of electric vehicles, the market's power density, cost, safety and other aspects of motor drive systems. Make higher demands.
驱动电机的电机驱动系统中，使用电力电子控制器PEU对驱动电机转速进行控制调节，PEU同时将例如动力电池输入的直流高压电逆变为交流高压电，作为驱动电机的电流输入。PEU主要功能包括如下两点：In the motor drive system of the drive motor, the power electronic controller PEU is used to control and adjust the rotational speed of the drive motor, and the PEU simultaneously inverts the DC high voltage power input, for example, from the power battery, into an AC high voltage power, as a current input of the drive motor. The main functions of PEU include the following two points:
第一，作为动力电池与驱动电机之间的能量传输装置，其具有逆变功能，也即DC-AC转换功能，例如，其可以将动力电池输入的高压直流电转换为三相高压交流电传输给驱动电机；First, as an energy transmission device between the power battery and the drive motor, it has an inverter function, that is, a DC-AC conversion function, for example, it can convert the high-voltage direct current input from the power battery into a three-phase high-voltage alternating current transmission to the drive. Motor
第二，作为控制信号接口电路与驱动电机控制电路，接收由整车控制器VCU(Vehicle Control Unit)发送的信号以及电机温度、速度、功率等信号，做出相应反馈，再将信号反馈给VCU和驱动电机，从而起到驱动电机控制作用。Secondly, as the control signal interface circuit and the drive motor control circuit, the signal transmitted by the vehicle controller VCU (Vehicle Control Unit) and the signals of the motor temperature, speed, power, etc. are received, corresponding feedback is provided, and the signal is fed back to the VCU. And drive the motor to play the role of drive motor control.
目前，电力电子控制器采用单一的传统三相全桥逆变功率模块，对于例如功率较大的电动汽车的驱动电机来说，容易受到功率器件最大允许电流的限制，例如，目前市场中的PEU峰值功率不超过200KW，峰值相电流不超过500A，因此，驱动电机的功率输出将受到限制；并且，单一的传统三相全桥逆变功率模块，功率器件的选型及成本都不好控制，过大的功率导致体积和成本将难以下降，冷却效率也较低。At present, the power electronic controller adopts a single traditional three-phase full-bridge inverter power module, which is easily limited by the maximum allowable current of the power device for a driving motor of a large electric vehicle, for example, a PEU currently in the market. The peak power does not exceed 200 KW, and the peak phase current does not exceed 500 A. Therefore, the power output of the drive motor will be limited; and, the single conventional three-phase full-bridge inverter power module, the selection and cost of the power device are not well controlled. Excessive power will make it difficult to reduce the volume and cost, and the cooling efficiency is also low.
发明内容Summary of the invention
本发明的目标是公开一种解决方案，该解决方案消除或至少减轻现有技术方案中出现的如上所述的缺陷。本发明的目标也是实现下面 的优点的一个或多个：It is an object of the present invention to disclose a solution that eliminates or at least mitigates the deficiencies described above that occur in prior art solutions. The object of the invention is also to achieve the following One or more of the advantages:
-提高PEU的功率输出和电流输出能力；- Improve the power output and current output capability of the PEU;
-提高PEU的可靠性；- Improve the reliability of the PEU;
-提高PEU的散热效率；- Improve the heat dissipation efficiency of the PEU;
-提高PEU的结构紧凑性。- Improve the structural compactness of the PEU.
本发明提供以下技术方案。The present invention provides the following technical solutions.
按照本发明的一方面，提供一种电力电子控制器，用于为交流电机提供交流输入并控制所述交流电机，其包括：According to an aspect of the present invention, a power electronic controller for providing an AC input to an AC motor and controlling the AC motor includes:
并行设置的第一逆变功率模块总成和第二逆变功率模块总成；和a first inverter power module assembly and a second inverter power module assembly arranged in parallel; and
夹置于所述第一逆变功率模块总成和第二逆变功率模块总成之间的冷却夹层；a cooling interlayer sandwiched between the first inverter power module assembly and the second inverter power module assembly;
其中，所述第一逆变功率模块总成和第二逆变功率模块总成从所述电力电子控制器的同一高压直流输入端子并联地接入外部高压直流电源、并且并行地输出交流输出至其交流输出端；The first inverter power module assembly and the second inverter power module assembly are connected in parallel from the same high voltage DC input terminal of the power electronic controller to an external high voltage DC power source, and output the AC output in parallel to Its AC output;
在所述冷却夹层中布置有所述第一逆变功率模块总成和第二逆变功率模块总成共用的冷却流道。A cooling flow path shared by the first inverter power module assembly and the second inverter power module assembly is disposed in the cooling interlayer.
根据本发明一实施例的电力电子控制器，其中，在所述电力电子控制器的内部设置有与所述高压直流输入端子电连接的用于将所述外部高压直流电源均分为两路直流输入的直流汇流排总成；所述直流汇流排总成具有对应所述两路直流输入分别设置的两路并行的第一直流排和第二直流排，所述第一逆变功率模块总成和第二逆变功率模块分别电连接于所述第一直流排和第二直流排。According to an embodiment of the present invention, a power electronic controller is provided, inside the power electronic controller, electrically connected to the high voltage direct current input terminal for dividing the external high voltage direct current power supply into two direct current An input DC busbar assembly; the DC busbar assembly has two parallel first DC rows and a second DC row respectively corresponding to the two DC inputs, the first inverter power module total The second inverter power module is electrically connected to the first DC row and the second DC row, respectively.
根据本发明一实施例的电力电子控制器，其中，所述直流汇流排总成还包括滤波电容和滤波电感。According to an embodiment of the present invention, a power electronic controller, wherein the DC bus bar assembly further includes a filter capacitor and a filter inductor.
根据本发明一实施例的电力电子控制器，其中，第一逆变功率模块总成和第二逆变功率模块总成各自包括：According to an embodiment of the present invention, a power electronic controller, wherein the first inverter power module assembly and the second inverter power module assembly each include:
电容；capacitance;
开关功率模块；和Switching power module; and
驱动电路；Drive circuit;
其中，所述第一逆变功率模块总成和第二逆变功率模块总成的所述开关功率模块上分别设置的散热部件相向地至少部分伸入所述冷却流道中。 The heat dissipating components respectively disposed on the switching power modules of the first inverter power module assembly and the second inverter power module assembly at least partially protrude into the cooling flow channel.
可选地，所述第一逆变功率模块总成和第二逆变功率模块总成的电容分别贴附在所述冷却夹层的上表面和下表面上，或者至少部分地设置在所述冷却夹层的冷却流道中。Optionally, the capacitances of the first inverter power module assembly and the second inverter power module assembly are respectively attached to the upper surface and the lower surface of the cooling interlayer, or at least partially disposed in the cooling In the cooling flow channel of the interlayer.
根据本发明一实施例的电力电子控制器，其中，所述第一逆变功率模块总成包括用于构成所述交流输出端的第一交流输出汇流排接口，所述第二逆变功率模块总成包括用于构成所述交流输出端的第二交流输出汇流排接口。A power electronic controller according to an embodiment of the present invention, wherein the first inverter power module assembly includes a first AC output bus interface for forming the AC output terminal, and the second inverter power module total The second AC output bus interface is configured to form the AC output.
根据本发明一实施例的电力电子控制器，其中，对应所述第二交流输出汇流排接口/第一交流输出汇流排接口设置有用于构成所述交流输出端的转接汇流排，其中，所述转接汇流排的第一端与所述第二交流输出汇流排接口/第一交流输出汇流排接口连接。The power electronic controller according to an embodiment of the present invention, wherein the second AC output bus interface/first AC output bus interface is provided with a transfer bus for forming the AC output, wherein the The first end of the transfer bus bar is connected to the second AC output bus interface/first AC output bus interface.
根据本发明一实施例的电力电子控制器，其中，所述转接汇流排的高度等于所述第一交流输出汇流排接口和第二交流输出汇流排接口的高度差，所述转接汇流排的第二端以及所述第一交流输出汇流排接口/所述第二交流输出汇流排接口在同一高度上按直线地布置。According to an embodiment of the present invention, a power electronic controller, wherein a height of the transit busbar is equal to a height difference of the first AC output busbar interface and a second AC output busbar interface, the transit busbar The second end and the first AC output bus interface/the second AC output bus interface are arranged in a straight line at the same height.
根据本发明一实施例的电力电子控制器，其中，对应第一交流输出汇流排接口/第二交流输出汇流排接口设置有用于构成所述交流输出端的第一转接输出汇流排，对应所述转接汇流排的第二端设置有用于构成所述交流输出端的第二转接输出汇流排，第一转接输出汇流排和第二转接输出汇流排按直线地并排地布置。The power electronic controller according to an embodiment of the present invention, wherein the first AC output bus interface/second AC output bus interface is provided with a first transfer output bus for forming the AC output, corresponding to the The second end of the transfer bus bar is provided with a second transfer output bus bar for constituting the AC output terminal, and the first transfer output bus bar and the second transfer output bus bar are arranged side by side in a straight line.
根据本发明一实施例的电力电子控制器，其中，所述交流输出端还包括设置在所述第一转接输出汇流排和第二转接输出汇流排上的滤波电感。According to an embodiment of the present invention, the power electronic controller further includes a filter inductor disposed on the first transit output bus and the second transit output bus.
根据本发明一实施例的电力电子控制器，其中，所述第一逆变功率模块总成和第二逆变功率模块总成各自还包括电流传感器。According to an embodiment of the present invention, a power electronic controller, wherein the first inverter power module assembly and the second inverter power module assembly each further include a current sensor.
根据本发明一实施例的电力电子控制器，其中，所述交流输出端具有对应于第一逆变功率模块总成的三根相线第一三相交流输出以及对应于第二逆变功率模块总成的第二三相交流输出的三根相线。According to an embodiment of the present invention, a power electronic controller has three phase lines corresponding to a first inverter power module assembly, a first three-phase AC output, and a total corresponding to the second inverter power module. The three phase lines of the second three-phase AC output.
可选地，所述第一三相交流输出对应的三根相线和第二三相交流输出对应的三根相线对应叠加地电连接在三相交流电机的三相绕组上。Optionally, the three phase lines corresponding to the first three-phase AC output and the three phase lines corresponding to the second three-phase AC output are electrically connected to each other on the three-phase winding of the three-phase AC motor.
可选地，所述第一三相交流输出和第二三相交流输出之间存在相 差时，所述第一三相交流输出对应的三根相线和第二三相交流输出对应的三根相线分别电连接在六相交流电机的六相绕组上。Optionally, there is a phase between the first three-phase AC output and the second three-phase AC output When the difference is small, the three phase lines corresponding to the first three-phase AC output and the three phase lines corresponding to the second three-phase AC output are respectively electrically connected to the six-phase winding of the six-phase AC motor.
根据本发明一实施例的电力电子控制器，其中，所述电力电子控制器被构造为大致箱体结构，所述第一逆变功率模块总成、冷却夹层和第二逆变功率模块总成分别用于形成所述箱体结构的上层、中间层和下层。A power electronic controller according to an embodiment of the present invention, wherein the power electronic controller is configured as a substantially box structure, the first inverter power module assembly, the cooling interlayer, and the second inverter power module assembly They are used to form the upper, middle and lower layers of the box structure, respectively.
根据本发明一实施例的电力电子控制器，其中，所述冷却夹层被配置为所述箱体结构的主箱体的一部分，所述第一逆变功率模块总成和第二逆变功率模块总成对称地分布在所述冷却夹层的上下两侧。A power electronic controller according to an embodiment of the present invention, wherein the cooling interlayer is configured as a part of a main box of the box structure, the first inverter power module assembly and a second inverter power module The assemblies are symmetrically distributed on the upper and lower sides of the cooling interlayer.
根据本发明一实施例的电力电子控制器，其中，所述电力电子控制器还包括低压控制电路和屏蔽板，其中，所述屏蔽板设置在所述低压控制电路和所述第一逆变功率模块总成或第二逆变功率模块总成之间用于屏蔽高压电流信号的电磁干扰。A power electronic controller according to an embodiment of the present invention, wherein the power electronic controller further includes a low voltage control circuit and a shielding plate, wherein the shielding plate is disposed at the low voltage control circuit and the first inverter power The electromagnetic interference between the module assembly or the second inverter power module assembly is used to shield the high voltage current signal.
按照本发明的又一方面，提供一种电动汽车，其包括有用于输出动力的交流电机，和以上所述及的电力电子控制器。According to still another aspect of the present invention, an electric vehicle is provided which includes an AC motor for outputting power, and a power electronic controller as described above.
本发明的电力电子控制器PEU具有并行设置的第一逆变功率模块总成和第二逆变功率模块总成，并且它们共用冷却夹层中的冷却流道，提高PEU的功率输出和电流输出能力的同时，可以提高其工作可靠性，并且，具有较好的散热效率，整体结构紧凑。The power electronic controller PEU of the present invention has a first inverter power module assembly and a second inverter power module assembly arranged in parallel, and they share a cooling flow channel in the cooling interlayer to improve the power output and current output capability of the PEU. At the same time, it can improve the reliability of its work, and has better heat dissipation efficiency and compact overall structure.
附图说明DRAWINGS
从结合附图的以下详细说明中，将会使本发明的上述和其他目的及优点更加完整清楚，其中，相同或相似的要素采用相同的标号表示。The above and other objects and advantages of the present invention will be more fully understood from the aspects of the appended claims.
图1和图2是按照本发明一实施例的电力电子器件的外部立体结构示意图。1 and 2 are schematic diagrams showing the external three-dimensional structure of a power electronic device according to an embodiment of the present invention.
图3是按照本发明一实施例的电力电子器件的横截面图。3 is a cross-sectional view of a power electronic device in accordance with an embodiment of the present invention.
图4是按照本发明一实施例的电力电子器件的内部的直流汇流排总成与逆变功率模块总成的结构示意图。4 is a schematic structural view of an internal DC busbar assembly and an inverter power module assembly of a power electronic device according to an embodiment of the invention.
图5是按照本发明一实施例的电力电子器件的内部的直流汇流排总成的结构示意图。FIG. 5 is a schematic diagram showing the structure of a DC bus bar assembly inside a power electronic device according to an embodiment of the invention.
图6是按照本发明一实施例的电力电子器件的逆变功率模块总成的局部结构示意图。 FIG. 6 is a partial structural diagram of an inverter power module assembly of a power electronic device according to an embodiment of the invention.
图7是按照本发明一实施例的电力电子器件的逆变功率模块总成的交流输出端的结构示意图。FIG. 7 is a schematic structural diagram of an AC output end of an inverter power module assembly of a power electronic device according to an embodiment of the invention.
图8是按照本发明一实施例的电力电子器件的内部结构示意图，其中示出了低压控制电路和屏蔽板。FIG. 8 is a schematic diagram showing the internal structure of a power electronic device according to an embodiment of the present invention, in which a low voltage control circuit and a shield plate are shown.
图9是按照本发明一实施例的电力电子器件的内部的冷却流道示意图。9 is a schematic diagram of a cooling flow path inside a power electronic device in accordance with an embodiment of the present invention.
图10是按照本发明一实施例的电力电子器件的冷却原理示意图。Figure 10 is a schematic diagram of the cooling principle of a power electronic device in accordance with an embodiment of the present invention.
具体实施方式detailed description
现在将参照附图更加完全地描述本发明，附图中示出了本发明的示例性实施例。但是，本发明可按照很多不同的形式实现，并且不应该被理解为限制于这里阐述的实施例。相反，提供这些实施例使得本公开变得彻底和完整，并将本发明的构思完全传递给本领域技术人员。The invention will now be described more fully hereinafter with reference to the accompanying drawings in which FIG. However, the invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
下面的描述中，为描述的清楚和简明，并没有对图中所示的所有多个部件进行详细描述。附图中示出了本领域普通技术人员为完全能够实现本发明的多个部件，对于本领域技术人员来说，许多部件的操作都是熟悉而且明显的。In the following description, for the sake of clarity and conciseness of the description, all the various components shown in the drawings are not described in detail. The various components of the present invention are fully apparent to those skilled in the art, and the operation of many components is familiar and obvious to those skilled in the art.
在以下的说明中，为方便说明，将电力电子控制器的高的方向定义为z方向，电力电子控制器的长的方向定义为x方向，垂直于z方向和x方向的方向，即电力电子控制器的宽的方向，定义为y方向。需要理解，这些方向的定义是用于相对于的描述和澄清，其可以根据电力电子控制器的方位的变化而相应地发生变化。In the following description, for convenience of explanation, the high direction of the power electronic controller is defined as the z direction, and the long direction of the power electronic controller is defined as the x direction, the direction perpendicular to the z direction and the x direction, that is, power electronics The width direction of the controller is defined as the y direction. It is to be understood that the definitions of these directions are for relative description and clarification, which may vary accordingly depending on the change in the orientation of the power electronic controller.
在以下实施例中，在没有特殊说明的情况下，“上”和“下”的方位术语是基于z方向来定义的；并且，应当理解到，这些方向性术语是相对的概念，它们用于相对于的描述和澄清，其可以根据稳定装置所安装的方位的变化而相应地发生变化。In the following embodiments, the orientation terms of "upper" and "lower" are defined based on the z direction unless otherwise specified; and, it should be understood that these directional terms are relative concepts and they are used for With respect to the description and clarification, it may vary accordingly depending on the change in the orientation in which the stabilizing device is mounted.
以下结合图1至图10对本发明一实施例的电力电子控制器PEU10进行详细示例说明。The power electronic controller PEU10 according to an embodiment of the present invention will be described in detail below with reference to FIG. 1 to FIG.
PEU10示例地应用于驱动电动汽车(包括纯电动汽车和混合动力汽车)的交流电机，其能够为交流电机提供大功率的三相高压交流输出(U1、V1和W1，U2、V2和W2)，并提供较大的峰值功率和 峰值电流输出。The PEU 10 is exemplarily applied to an AC motor that drives an electric vehicle (including a pure electric vehicle and a hybrid vehicle), which can provide a high-power three-phase high-voltage AC output (U1, V1, and W1, U2, V2, and W2) for the AC motor. And provide greater peak power and Peak current output.
如图1和图2所示，PEU10整体地被设置为大致为方形的箱体结构11，其外部具有高压直流输入端子101，其用于接入高压直流电源，例如，两个高压直流输入端子101分别连接动力电池包的正负输出端；并且，PEU10外部具有对应内部的冷却流道310设置的出入口301，用于冷却的液体(例如水)可以从出入口301循环地流进和流出。PEU10的外部结构的具体形状设计不是限制性的，其可以根据其安装在例如电动汽车上的位置等因素来设计其形状。在其后的描述中，将理解到，本发明实施例的具有箱体结构11的PEU10整体具有结构紧凑的优点。As shown in FIGS. 1 and 2, the PEU 10 is integrally provided as a substantially square box structure 11 having a high voltage DC input terminal 101 externally for accessing a high voltage DC power source, for example, two high voltage DC input terminals. 101 is respectively connected to the positive and negative output ends of the power battery pack; and, the outside of the PEU 10 has an inlet and outlet 301 corresponding to the internal cooling flow passage 310, and a liquid (for example, water) for cooling can flow in and out cyclically from the inlet and outlet 301. The specific shape design of the outer structure of the PEU 10 is not limitative, and its shape can be designed according to factors such as its position mounted on an electric car. In the following description, it will be understood that the PEU 10 having the box structure 11 of the embodiment of the present invention has an overall compact advantage.
PEU10内部主要地设置有逆变功率模块总成200和逆变功率模块总成400，两个逆变功率模块总成200和400主要用于实现从DC-AC的转换；从电学连接结构上看，它们的输入端同时并联地接入外部高压直流电源，并且，逆变功率模块总成200和400并行输出三相交流U1、V1和W1、以及三相交流U2、V2和W2；从结构上来看(如图3所示)，逆变功率模块总成200和400可以并行地设置，它们中间设置冷却夹层300，这样，逆变功率模块总成200、冷却夹层300和逆变功率模块总成400分别用于形成箱体结构11的上层、中间层和下层。冷却夹层300对应的中间层可以是例如铝合金形成的箱体结构11的主箱体的一部分，主箱体作为箱体结构11的主体，其可以一体地形成并用于固定PEU10所包括的其他各个部件，其具有一定的强度和导热性。对应夹置在逆变功率模块总成200和400之间的主箱体部分的内部可以形成冷却液可以循环流动的冷却流道310，从而形成了逆变功率模块总成200和400共用的冷却夹层300，其可以同时对逆变功率模块总成200和400进行冷却，冷却效率高，并且，在冷却结构上可以实现更紧凑地布置。The PEU10 is mainly provided with an inverter power module assembly 200 and an inverter power module assembly 400. The two inverter power module assemblies 200 and 400 are mainly used for converting from DC-AC; from the perspective of electrical connection structure The input terminals are simultaneously connected to the external high-voltage DC power supply in parallel, and the inverter power module assemblies 200 and 400 output three-phase AC U1, V1 and W1 and three-phase AC U2, V2 and W2 in parallel; Looking (as shown in Figure 3), the inverter power module assemblies 200 and 400 can be arranged in parallel with a cooling interlayer 300 disposed therebetween, such that the inverter power module assembly 200, the cooling interlayer 300, and the inverter power module assembly 400 is used to form the upper layer, the intermediate layer, and the lower layer of the box structure 11, respectively. The intermediate layer corresponding to the cooling interlayer 300 may be a part of a main casing of a casing structure 11 formed of, for example, an aluminum alloy, and the main casing serves as a main body of the casing structure 11, which may be integrally formed and used to fix other parts included in the PEU 10 A component that has a certain strength and thermal conductivity. Corresponding to the inside of the main box portion sandwiched between the inverter power module assemblies 200 and 400, a cooling flow path 310 through which the coolant can circulate can be formed, thereby forming a common cooling of the inverter power module assemblies 200 and 400. The interlayer 300, which can simultaneously cool the inverter power module assemblies 200 and 400, has high cooling efficiency and can achieve a more compact arrangement on the cooling structure.
在一实施例中，逆变功率模块总成200和400均具有大致相似的如4和图6所示的相似的结构，它们上下对称地分布在冷却夹层300的上下两侧，并且分别具有用于提高散热效率的散热部件221和421，散热部件221和421可以是容易导热的柱体，如图3、图7和图9所示，逆变功率模块总成200上的散热部件221和逆变功率模块总成400上的散热部件421相向设置，并且至少部分伸入它们共用的冷却夹层 300的冷却流道310中，从而提高对逆变功率模块总成的散热效率。In an embodiment, the inverter power module assemblies 200 and 400 each have substantially similar structures as shown in FIG. 4 and FIG. 6, which are symmetrically distributed up and down on the upper and lower sides of the cooling interlayer 300, and have respective uses. For the heat dissipating members 221 and 421 for improving the heat dissipation efficiency, the heat dissipating members 221 and 421 may be columns that are easily thermally conductive, as shown in FIGS. 3, 7, and 9, the heat dissipating members 221 and the counter on the inverter power module assembly 200. The heat dissipating members 421 on the variable power module assembly 400 are disposed opposite each other and at least partially extend into their shared cooling interlayer The cooling runner 310 of 300 increases the heat dissipation efficiency of the inverter power module assembly.
PEU10的冷却原理如图10所示，逆变功率模块总成200的核心需要冷却的部件是大功率的开关功率模块220，其主要发热元件是开关功率模块220的功率开关元件(例如IGBT)222；同样地，逆变功率模块总成400的特别需要冷却的部件是大功率的开关功率模块420，其主要发热元件是开关功率模块420的功率开关元件(例如IGBT)422。冷却流道310中液体按照如图10示意的方向循环流动，从而同时带走功率开关元件222和422所散发的热量，因此，一个冷却夹层300同时能为两个逆变功率模块总成提供散热，从而提高散热效率。The cooling principle of the PEU 10 is as shown in FIG. 10 . The core of the inverter power module assembly 200 needs to be cooled. The component that is cooled is a high-power switching power module 220 whose main heating element is a power switching element (eg, IGBT) 222 of the switching power module 220. Similarly, the component of the inverter power module assembly 400 that is particularly in need of cooling is a high power switching power module 420 whose primary heating element is a power switching element (eg, IGBT) 422 of the switching power module 420. The liquid in the cooling flow path 310 circulates in the direction as illustrated in FIG. 10, thereby simultaneously taking away the heat dissipated by the power switching elements 222 and 422, so that one cooling interlayer 300 can simultaneously provide heat dissipation for the two inverter power module assemblies. , thereby improving heat dissipation efficiency.
如图3和图4所示，PEU10的内部还设置有与高压直流输入端子101电连接的直流汇流排总成100，直流汇流排总成100用于将外部高压直流电源(例如动力电池包的高压直流输出)均分为两路直流输入，从而逆变功率模块总成200和逆变功率模块总成400同时具有相同的直流输入。直流汇流排总成100具有对应两路直流输入分别设置的两路并行的第一直流排120和第二直流排140，每个直流排120或140具有两个端子，其分别电连接两个直流输入端子101，即分别电连接正负直流输入端子；两路第一直流排120和第二直流排140通过并行设置来实现对直流汇流排总成100的直流输入进行分流。逆变功率模块总成200和逆变功率模块400分别电连接于第一直流排120和第二直流排140，从而为逆变功率模块总成200和逆变功率模块400分别接入独立的一路直流输入电源。第一直流排120和/或第二直流排140具体可以为直流铜排，第一直流排120和第二直流排140具有相同的结构设置并采用相同的材料，例如第一直流排120和第二直流排140具有相同的横截面积。As shown in FIG. 3 and FIG. 4, the inside of the PEU 10 is further provided with a DC bus bar assembly 100 electrically connected to the high voltage DC input terminal 101, and the DC bus bar assembly 100 is used for external high voltage DC power supply (for example, a power battery pack) The high voltage DC output is divided into two DC inputs, so that the inverter power module assembly 200 and the inverter power module assembly 400 have the same DC input at the same time. The DC bus bar assembly 100 has two parallel first DC rows 120 and a second DC row 140 respectively corresponding to two DC inputs, each DC row 120 or 140 has two terminals, which are electrically connected to two The DC input terminals 101 are respectively electrically connected to the positive and negative DC input terminals; the two first DC banks 120 and the second DC banks 140 are shunted in parallel to realize the DC input of the DC bus bar assembly 100. The inverter power module assembly 200 and the inverter power module 400 are electrically connected to the first DC line 120 and the second DC line 140 respectively, thereby respectively connecting the inverter power module assembly 200 and the inverter power module 400 to each other independently. One way DC input power. The first DC row 120 and/or the second DC row 140 may specifically be DC copper bars, and the first DC row 120 and the second DC row 140 have the same structural arrangement and use the same material, for example, the first DC row. 120 and second DC row 140 have the same cross-sectional area.
在一实施例中，如图5所示，直流汇流排总成100还包括滤波电容110和滤波电感130。滤波电容110例如可以是X电容和Y电容，其可以对高压直流输入进行滤波处理，保证输入电流稳定可靠；滤波电感130具体可以是铁氧体电感等电感器件，其可以将来自动力电池包的高压直流输入的直流高压电杂波进行过滤，保证PEU10的EMC性能。In an embodiment, as shown in FIG. 5, the DC bus bar assembly 100 further includes a filter capacitor 110 and a filter inductor 130. The filter capacitor 110 can be, for example, an X capacitor and a Y capacitor, which can filter the high voltage DC input to ensure stable and reliable input current. The filter inductor 130 can be an inductor device such as a ferrite inductor, which can be used from a power battery pack. The high-voltage DC input DC high-voltage electric clutter is filtered to ensure the EMC performance of the PEU10.
如图3、4和图7所示，逆变功率模块总成200主要包括电容210、开关功率模块220和驱动电路230；逆变功率模块总成400也具有类 似的结构，其主要包括电容410、开关功率模块420和驱动电路430。其中，电容210和410可选地为薄膜电容，其可分别跨接在每路直流输入的两端，从而形成DC-link电容，因此，也被称为DC联接电容器。As shown in FIG. 3, FIG. 4 and FIG. 7, the inverter power module assembly 200 mainly includes a capacitor 210, a switching power module 220, and a driving circuit 230. The inverter power module assembly 400 also has a class. The structure mainly includes a capacitor 410, a switching power module 420, and a driving circuit 430. The capacitors 210 and 410 are optionally thin film capacitors that can be connected across the respective DC input terminals to form a DC-link capacitor, and are therefore also referred to as DC coupling capacitors.
由于电容210和410在工作时，可能在其上产生纹波电流而发热，因此，在一实施例中，可以将电容210和410分别贴附在冷却夹层300的上表面和下表面上，或者将电容210和410的至少以部分直接设置在冷却流道310中，从而利用冷却夹层300为电容210和410散热降温。Since the capacitors 210 and 410 may generate a ripple current to generate heat when they are in operation, in an embodiment, the capacitors 210 and 410 may be attached to the upper and lower surfaces of the cooling interlayer 300, respectively, or At least a portion of the capacitors 210 and 410 are disposed directly in the cooling runner 310 to cool the capacitors 210 and 410 using the cooling interlayer 300.
开关功率模块220和420在进行逆变工作过程会产生大量的热量并通过冷却夹层300液冷。开关功率模块220和420可以同时工作输出三相交流电，因此，提高了PEU10的功率输出和电流输出能力，容易满足电动汽车中的交流电机的大功率输出要求。在一实施例中，该PEU10的额定功率可以达到60KW、峰值功率可以达到240KW、峰值电流可以达到930A。并且，如果开关功率模块220和420中的一个发生故障或失效，另一个可以继续工作并提供一定功率交流输出，因此，交流电机可以在相对较低功率条件下继续驱动电动汽车行驶，可靠性得到提高，有利于防止车辆抛锚等情况发生。The switching power modules 220 and 420 generate a large amount of heat during the inverter operation and are liquid-cooled by the cooling interlayer 300. The switching power modules 220 and 420 can simultaneously output three-phase alternating current, thereby improving the power output and current output capability of the PEU 10, and easily meeting the high power output requirements of the AC motor in the electric vehicle. In one embodiment, the PEU 10 can have a rated power of 60 kW, a peak power of 240 kW, and a peak current of 930 amps. Moreover, if one of the switching power modules 220 and 420 fails or fails, the other can continue to operate and provide a certain power AC output, so that the AC motor can continue to drive the electric vehicle under relatively low power conditions, and reliability is obtained. Improvement will help prevent the occurrence of vehicle breakdown and so on.
开关功率模块220和420可以包括例如三个逆变子模块来逆变形成3相交流输出。需要说明的是，如果开关功率模块220和420需要输出除3相以外的交流输出，可以通过设置逆变子模块的个数来调整输出相的个数。每个逆变子模块是用的功率开关元件222和422可以但不限于为IGBT(绝缘栅双极型晶体管)。 Switching power modules 220 and 420 can include, for example, three inverter sub-modules to invert to form a 3-phase AC output. It should be noted that if the switching power modules 220 and 420 need to output an AC output other than the three phases, the number of output phases can be adjusted by setting the number of the inverter submodules. The power switching elements 222 and 422 used for each inverter sub-module may be, but are not limited to, IGBTs (Insulated Gate Bipolar Transistors).
继续如图1和图3所示，PEU10还具有交流输出端24，其具有对应两个逆变功率模块总成的两套交流输出汇流排接口，即第一交流输出汇流排接口240和第二交流输出汇流排接口440，如图7所示，第一交流输出汇流排接口240对应于开关功率模块220设置，第二交流输出汇流排接口440对应于开关功率模块420设置，第一交流输出汇流排接口240对应作为逆变功率模块总成200的三相交流输出端、并且三个接口分别输出U1相、V1相和W1相，第二交流输出汇流排接口440对应作为逆变功率模块总成400的三相交流输出端并且三个接口分别输出U2相、V2相和W2相。 As shown in FIG. 1 and FIG. 3, the PEU 10 further has an AC output terminal 24 having two sets of AC output busbar interfaces corresponding to two inverter power module assemblies, namely, a first AC output bus bar interface 240 and a second. The AC output bus interface 440, as shown in FIG. 7, the first AC output bus interface 240 is corresponding to the switch power module 220, and the second AC output bus interface 440 is corresponding to the switch power module 420, the first AC output sink The row interface 240 corresponds to the three-phase AC output end of the inverter power module assembly 200, and the three interfaces respectively output the U1 phase, the V1 phase and the W1 phase, and the second AC output bus bar interface 440 corresponds to the inverter power module assembly. The three-phase AC output of 400 and the three interfaces output the U2 phase, the V2 phase, and the W2 phase, respectively.
在一实施例中，如图4和图7所示，由于逆变功率模块总成200和逆变功率模块总成400是在z方向上上下平行布置，因此，它们对应的第一交流输出汇流排接口240和第二交流输出汇流排接口440在z方向上存在高度差。为克服该高度差，如图4、图7和图8所示，对应第二交流输出汇流排接口440设置有用于构成交流输出端24的转接汇流排442，其中，转接汇流排442的第一端与第二交流输出汇流排接口440连接；转接汇流排442的高度基本等于第一交流输出汇流排接口240和第二交流输出汇流排接口440的高度差，从而，转接汇流排442的第二端以及第一交流输出汇流排接口240在同一高度上按直线地布置。这样，转接汇流排442将逆变功率模块总成400的交流输出转接到对应逆变功率模块总成200的交流输出的同一高度，方便将两路三相交流输出从PEU10中引出。需要理解的是，在又一替换实施例中，也可以对应第一交流输出汇流排接口240设置转接汇流排，该转接汇流排的第一端连接第一交流输出汇流排接口240，其第二端与第二交流输出汇流排接口440在同一高度上并按直线地布置；这样，该转接汇流排将逆变功率模块总成200的交流输出转接到对应逆变功率模块总成400的交流输出的同一高度。转接汇流排442具体可以为转接铜排。In an embodiment, as shown in FIG. 4 and FIG. 7, since the inverter power module assembly 200 and the inverter power module assembly 400 are arranged in parallel in the z direction, their corresponding first AC output confluences The row interface 240 and the second AC output bus bar interface 440 have a height difference in the z direction. To overcome the height difference, as shown in FIG. 4, FIG. 7, and FIG. 8, the second AC output bus bar interface 440 is provided with a transfer bus bar 442 for constituting the AC output terminal 24, wherein the transfer bus bar 442 is provided. The first end is connected to the second AC output bus interface 440; the height of the transfer bus bar 442 is substantially equal to the height difference between the first AC output bus interface 240 and the second AC output bus interface 440, thereby, the transfer bus The second end of the 442 and the first AC output bus bar interface 240 are arranged in a straight line at the same height. Thus, the transfer bus 442 transfers the AC output of the inverter power module assembly 400 to the same height of the AC output of the corresponding inverter power module assembly 200, facilitating the extraction of the two three-phase AC outputs from the PEU 10. It should be understood that, in still another alternative embodiment, the first AC output bus interface 240 may be disposed corresponding to the first AC output bus interface 240, and the first end of the transfer bus bar is connected to the first AC output bus interface 240. The second end is disposed at the same height as the second AC output bus interface 440 and arranged in a straight line; thus, the transfer bus bar transfers the AC output of the inverter power module assembly 200 to the corresponding inverter power module assembly. The same height of the AC output of the 400. The transfer bus bar 442 can be specifically a transfer copper bar.
如图7和图8所示，对应交流输出汇流排接口240设置有用于构成交流输出端24的第一转接输出汇流排250，对应转接汇流排442的第二端设置有用于构成交流输出端24的第二转接输出汇流排450，第一转接输出汇流排250和第二转接输出汇流排450按直线地(例如在y方向上)并排布置，方便连接交流电机的输入端需要理解的是，以上实施例中，PEU10的交流输出端24可以理解为交流输出端总成，其主要地包括第一交流输出汇流排接口240、第二交流输出汇流排接口440、转接汇流排442、第一转接输出汇流排250和第二转接输出汇流排450等部件。在又一实施例中，交流输出端24中设置有滤波电感245，滤波电感245可以一体地设置在第一转接输出汇流排250和第二转接输出汇流排450上，滤波电感可整体的对直线并排布置的第一转接输出汇流排250和第二转接输出汇流排450进行滤波；滤波电感245也可以为直线并排的布置6个滤波电感，对第一转接输出汇流排250和第二转接输出汇流排450的6个输出端分别进行滤波。滤 波电感245保证交流输出信号的稳定。可选地，滤波电感245选用的材料可以但不限于是铁氧体或者非晶材料；滤波电感245可通过塑料件等集成在主箱体中，或者集成在主要箱体盖板上。继续如图3和图7所示，驱动电路230和430具体可以以电路板形式设置，它们分别为开关功率模块220和420提供开关驱动信号，从而控制每个功率开关元件222和422的导通和关断。在一实施例中，如图6所示，逆变功率模块总成200还包括电流传感器260，同样地，逆变功率模块总成400也相应地设置有电流传感器(图中未示出)。As shown in FIG. 7 and FIG. 8 , the corresponding AC output bus interface 240 is provided with a first switching output bus 250 for forming an AC output terminal 24 , and the second end of the corresponding switching bus bar 442 is provided with an AC output. The second transfer output bus bar 450 of the terminal 24, the first transfer output bus bar 250 and the second transfer output bus bar 450 are arranged side by side in a straight line (for example, in the y direction) for convenient connection to the input end of the AC motor. It is understood that, in the above embodiment, the AC output terminal 24 of the PEU 10 can be understood as an AC output terminal assembly, which mainly includes a first AC output bus bar interface 240, a second AC output bus bar interface 440, and an adapter bus bar. 442. The first transit output bus 250 and the second transit output bus 450 and the like. In another embodiment, the AC output terminal 24 is provided with a filter inductor 245, and the filter inductor 245 can be integrally disposed on the first transfer output bus bar 250 and the second transfer output bus bar 450. The filter inductor can be integrated. The first switching output bus 250 and the second switching output bus 450 arranged side by side in a straight line are filtered; the filter inductor 245 may also be arranged in a line side by side with six filter inductors, for the first switching output bus 250 and The six outputs of the second switching output bus 450 are separately filtered. Filter The wave inductor 245 ensures the stability of the AC output signal. Optionally, the material selected by the filter inductor 245 may be, but not limited to, a ferrite or an amorphous material; the filter inductor 245 may be integrated in the main case by a plastic part or the like, or integrated on the main case cover. Continuing with Figures 3 and 7, drive circuits 230 and 430 may be specifically provided in the form of a circuit board that provides switch drive signals for switching power modules 220 and 420, respectively, thereby controlling the conduction of each of power switching elements 222 and 422. And shutting down. In an embodiment, as shown in FIG. 6, the inverter power module assembly 200 further includes a current sensor 260. Similarly, the inverter power module assembly 400 is also provided with a current sensor (not shown).
在一实施例中，如图3和图8所示，电力电子控制器10还包括低压控制电路500，低压控制电路500例如可以用来控制驱动电路230和430，用来实现控制交流电机的功能。低压控制电路500中工作的电压低、电流小，因此，容易被PEU10内部的直流汇流排总成100、电容210和410、开关功率模块220和420、第一交流输出汇流排接口240和第二交流输出汇流排接口440等的大电流、高压信号的电磁干扰，为避免该电磁干扰，对应低压控制电路500还设置有屏蔽板600，屏蔽板600可以设置在低压控制电路500与逆变功率模块总成200之间，也可以设置低压控制电路500与逆变功率模块总成400之间，其具有隔离高压电流信号的电磁干扰的作用。具体地，屏蔽板600设计为金属钣金件，其材料使用镀锌碳钢；该钣金件四周区域含有凸筋，使屏蔽板从结构上对低压控制电路500进行包裹，实现对低压控制电路500的信号隔离。低压控制电路500具体可以构造为电路板。In an embodiment, as shown in FIGS. 3 and 8, the power electronic controller 10 further includes a low voltage control circuit 500, which can be used, for example, to control the drive circuits 230 and 430 for implementing the function of controlling the AC motor. . The low voltage control circuit 500 operates with a low voltage and a small current. Therefore, it is easily used by the DC busbar assembly 100 inside the PEU 10, the capacitors 210 and 410, the switching power modules 220 and 420, the first AC output bus interface 240, and the second. The electromagnetic interference of the high current and high voltage signals of the AC output bus interface 440, etc., in order to avoid the electromagnetic interference, the corresponding low voltage control circuit 500 is further provided with a shielding plate 600, and the shielding plate 600 can be disposed in the low voltage control circuit 500 and the inverter power module. Between the assemblies 200, a low voltage control circuit 500 and an inverter power module assembly 400 may also be provided, which have the function of isolating the electromagnetic interference of the high voltage current signal. Specifically, the shielding plate 600 is designed as a metal sheet metal member, and the material thereof is galvanized carbon steel; the surrounding area of the sheet metal member includes a rib, so that the shielding plate is structurally wrapped with the low voltage control circuit 500 to realize a low voltage control circuit. 500 signal isolation. The low voltage control circuit 500 can be embodied as a circuit board.
以上实施例的PEU10在工作时，第一转接输出汇流排250可以输出三相交流输出(U1、V1、W1)，第二转接输出汇流排450可以输出又一三相交流输出(U2、V2、W2)，也即，交流输出端24具有对应两个三相交流输出的六根相线。若交流电机为三相交流电机，第一转接输出汇流排250的三相交流输出和第二转接输出汇流排450的三相交流输出在电气上为同相，它们可以同时为该三相电机提供叠加的三相交流输出，例如，U1和U2、V1和V2、W1和W2分别对应电连接在三相交流电机的三相绕组上，从而对应叠加地电连接在三相交流电机的三相绕组上。若交流电机为六相交流电机，第一转接输出汇流排250的三相交流输出和第二转接输出汇流排450的三相交流输出在电气上为存在例如60°的相差，第一转接输出汇流排250的三相交流 输出和第二转接输出汇流排450的三相交流输出组合为六相交流电机提供六相交流输出，例如，U1、U2、V1、V2、W1和W2分别电连接在六相交流电机的六相绕组上。When the PEU 10 of the above embodiment is in operation, the first transit output bus bar 250 can output three-phase AC output (U1, V1, W1), and the second transit output bus bar 450 can output another three-phase AC output (U2). V2, W2), that is, the AC output 24 has six phase lines corresponding to two three-phase AC outputs. If the AC motor is a three-phase AC motor, the three-phase AC output of the first switching output bus 250 and the three-phase AC output of the second switching output bus 450 are electrically in phase, and they can simultaneously be the three-phase motor Providing superimposed three-phase AC output. For example, U1 and U2, V1 and V2, W1 and W2 are respectively electrically connected to the three-phase winding of the three-phase AC motor, so that the corresponding three-phase AC is electrically connected to the three-phase AC motor. On the windings. If the AC motor is a six-phase AC motor, the three-phase AC output of the first switching output bus 250 and the three-phase AC output of the second switching output bus 450 are electrically separated by, for example, 60°, the first turn Three-phase AC connected to the output bus 250 The output and the three-phase AC output combination of the second switching output bus 450 provide a six-phase AC output for the six-phase AC motor, for example, U1, U2, V1, V2, W1, and W2 are electrically connected to the six-phase AC motor, respectively. On the phase winding.
本发明以上实施例的PEU10在安装应用于电动汽车上来驱动交流电机时，形成了本发明实施例的电动汽车。本发明实施例的电动汽车可以使用三相交流电机，也可以使用六相交流电机。在使用三相交流电机时，U1和U2、V1和V2、W1和W2分别连接在三相交流电机的三相绕组上。在使用为六相交流电机时，第一转接输出汇流排250的三相交流输出和第二转接输出汇流排450的三相交流输出在电气上为存在例如60°的相差，U1、U2、V1、V2、W1和W2分别连接在六相交流电机的六相绕组上。When the PEU 10 of the above embodiment of the present invention is applied to an electric vehicle to drive an AC motor, the electric vehicle of the embodiment of the present invention is formed. The electric vehicle of the embodiment of the present invention may use a three-phase alternating current motor or a six-phase alternating current motor. When using a three-phase AC motor, U1 and U2, V1 and V2, W1 and W2 are respectively connected to the three-phase windings of the three-phase AC motor. When a six-phase AC motor is used, the three-phase AC output of the first transfer output bus 250 and the three-phase AC output of the second transfer output bus 450 are electrically separated by, for example, 60°, U1, U2 V1, V2, W1 and W2 are respectively connected to the six-phase winding of the six-phase AC motor.
需要说明的是，本发明实施例的PEU10并不限于应用于电动汽车中，根据以上揭示将理解到，本发明实施例的PEU10还可以应用于具有类似电动汽车的交流电机的使用要求的机器或设备上。It should be noted that the PEU 10 of the embodiment of the present invention is not limited to being applied to an electric vehicle. According to the above disclosure, the PEU 10 of the embodiment of the present invention can also be applied to a machine having an application requirement of an AC motor similar to an electric vehicle or On the device.
将理解，当据称将部件“连接”到另一个部件时，它可以直接连接到另一个部件或可以存在中间部件。It will be understood that when a component is "connected" to another component, it can be directly connected to the other component or the intermediate component can be present.
以上例子主要说明了本发明的电力电子控制器和电动汽车。尽管只对其中一些本发明的实施方式进行了描述，但是本领域普通技术人员应当了解，本发明可以在不偏离其主旨与范围内以许多其他的形式实施。因此，所展示的例子与实施方式被视为示意性的而非限制性的，在不脱离如所附各权利要求所定义的本发明精神及范围的情况下，本发明可能涵盖各种的修改与替换。 The above examples mainly illustrate the power electronic controller and the electric vehicle of the present invention. Although only a few of the embodiments of the present invention have been described, it will be understood by those skilled in the art that the invention may be practiced in many other forms without departing from the spirit and scope of the invention. Accordingly, the present invention is to be construed as illustrative and not restrictive, and the invention may cover various modifications without departing from the spirit and scope of the invention as defined by the appended claims With replacement.

Claims (17)

  1. 一种电力电子控制器(10)，用于为交流电机提供交流输入并控制所述交流电机，其特征在于，包括：A power electronic controller (10) for providing an AC input to an AC motor and controlling the AC motor, comprising:
    并行设置的第一逆变功率模块总成(200)和第二逆变功率模块总成(400)；和a first inverter power module assembly (200) and a second inverter power module assembly (400) disposed in parallel; and
    夹置于所述第一逆变功率模块总成和第二逆变功率模块总成之间的冷却夹层(300)；a cooling interlayer (300) sandwiched between the first inverter power module assembly and the second inverter power module assembly;
    其中，所述第一逆变功率模块总成(200)和第二逆变功率模块总成(400)从所述电力电子控制器(10)的同一高压直流输入端子(101)并联地接入外部高压直流电源、并且并行地输出交流输出至其交流输出端(24)；The first inverter power module assembly (200) and the second inverter power module assembly (400) are connected in parallel from the same high voltage DC input terminal (101) of the power electronic controller (10). External high-voltage DC power supply, and output AC output to its AC output terminal (24) in parallel;
    在所述冷却夹层(300)中布置有所述第一逆变功率模块总成(200)和第二逆变功率模块总成(400)共用的冷却流道(310)。A cooling flow passage (310) shared by the first inverter power module assembly (200) and the second inverter power module assembly (400) is disposed in the cooling interlayer (300).
  2. 如权利要求1所述的电力电子控制器(10)，其特征在于，在所述电力电子控制器(10)的内部设置有与所述高压直流输入端子(101)电连接的用于将所述外部高压直流电源均分为两路直流输入的直流汇流排总成(100)；所述直流汇流排总成(100)具有对应所述两路直流输入分别设置的两路并行的第一直流排(120)和第二直流排(140)，所述第一逆变功率模块总成(200)和第二逆变功率模块(400)分别电连接于所述第一直流排(120)和第二直流排(140)。The power electronic controller (10) according to claim 1, wherein a power connection with said high voltage direct current input terminal (101) is provided inside said power electronic controller (10) for The external high-voltage DC power supply is divided into two DC input DC busbar assemblies (100); the DC busbar assembly (100) has two parallel parallel first lines respectively corresponding to the two DC inputs. The flow line (120) and the second DC line (140), the first inverter power module assembly (200) and the second inverter power module (400) are electrically connected to the first DC line (120, respectively) And the second DC row (140).
  3. 如权利要求2所述的电力电子控制器，其特征在于，所述直流汇流排总成(100)还包括滤波电容(110)和滤波电感(130)。The power electronic controller of claim 2 wherein said DC busbar assembly (100) further comprises a filter capacitor (110) and a filter inductor (130).
  4. 如权利要求1所述的电力电子控制器(10)，其特征在于，第一逆变功率模块总成(200)和第二逆变功率模块总成(400)各自包括：The power electronic controller (10) of claim 1 wherein the first inverter power module assembly (200) and the second inverter power module assembly (400) each comprise:
    电容(210，410)；Capacitor (210, 410);
    开关功率模块(220，420)；和Switching power module (220, 420); and
    驱动电路(230，430)；Drive circuit (230, 430);
    其中，所述第一逆变功率模块总成(200)和第二逆变功率模块总成(400)的所述开关功率模块(220，420)上分别设置的散热部 件(221，421)相向地至少部分伸入所述冷却流道(310)中。The heat dissipation part respectively disposed on the switching power modules (220, 420) of the first inverter power module assembly (200) and the second inverter power module assembly (400) The pieces (221, 421) extend at least partially into the cooling flow passage (310).
  5. 如权利要求4所述的电力电子控制器(10)，其特征在于，所述第一逆变功率模块总成(200)和第二逆变功率模块总成(400)的电容(210，410)分别贴附在所述冷却夹层(300)的上表面和下表面上，或者至少部分地设置在所述冷却夹层(300)的冷却流道(310)中。The power electronic controller (10) of claim 4, wherein the capacitance of the first inverter power module assembly (200) and the second inverter power module assembly (400) (210, 410) And attached to the upper and lower surfaces of the cooling interlayer (300), respectively, or at least partially disposed in the cooling flow channel (310) of the cooling interlayer (300).
  6. 如权利要求1或4所述的电力电子控制器(10)，其特征在于，所述第一逆变功率模块总成(200)包括用于构成所述交流输出端(24)的第一交流输出汇流排接口(240)，所述第二逆变功率模块总成(400)包括用于构成所述交流输出端(24)的第二交流输出汇流排接口(440)。A power electronic controller (10) according to claim 1 or 4, wherein said first inverter power module assembly (200) comprises a first alternating current for forming said alternating current output (24) An output bus interface (240), the second inverter power module assembly (400) includes a second AC output bus interface (440) for forming the AC output (24).
  7. 如权利要求6所述的电力电子控制器(10)，其特征在于，对应所述第二交流输出汇流排接口(440)/第一交流输出汇流排接口(240)设置有用于构成所述交流输出端(24)的转接汇流排(442)，其中，所述转接汇流排(442)的第一端与所述第二交流输出汇流排接口(440)/第一交流输出汇流排接口(240)连接。The power electronic controller (10) according to claim 6, wherein the second alternating current output bus interface (440) / the first alternating current output bus interface (240) is provided to constitute the communication a transfer bus bar (442) of the output terminal (24), wherein the first end of the transfer bus bar (442) is connected to the second AC output bus bar interface (440) / the first AC output bus bar interface (240) Connection.
  8. 如权利要求7所述的电力电子控制器(10)，其特征在于，所述转接汇流排(442)的高度等于所述第一交流输出汇流排接口(240)和第二交流输出汇流排接口(440)的高度差，所述转接汇流排(442)的第二端以及所述第一交流输出汇流排接口(240)/所述第二交流输出汇流排接口(440)在同一高度上按直线地布置。The power electronic controller (10) according to claim 7, wherein the height of the transfer bus bar (442) is equal to the first AC output bus bar interface (240) and the second AC output bus bar a height difference of the interface (440), the second end of the transfer bus (442) and the first AC output bus interface (240) / the second AC output bus interface (440) are at the same height Arranged in a straight line.
  9. 如权利要求7或8所述的电力电子控制器(10)，其特征在于，对应第一交流输出汇流排接口(240)/第二交流输出汇流排接口(440)设置有用于构成所述交流输出端(24)的第一转接输出汇流排(250)，对应所述转接汇流排(442)的第二端设置有用于构成所述交流输出端(24)的第二转接输出汇流排(450)，第一转接输出汇流排(250)和第二转接输出汇流排(450)按直线地并排地布置。The power electronic controller (10) according to claim 7 or 8, wherein the corresponding first alternating current output bus interface (240) / the second alternating current output bus interface (440) are provided to constitute the alternating current a first switching output bus (250) of the output terminal (24), and a second end of the switching bus bar (442) is provided with a second switching output confluence for forming the AC output terminal (24) The row (450), the first transfer output bus bar (250) and the second transfer output bus bar (450) are arranged side by side in a straight line.
  10. 如权利要求9所述的电力电子控制器(10)，其特征在于，所述交流输出端(24)还包括设置在所述第一转接输出汇流排(250)和第二转接输出汇流排(450)上的滤波电感(245)。The power electronic controller (10) of claim 9 wherein said alternating current output (24) further comprises a first switching output bus (250) and a second switching output confluence Filter inductor (245) on row (450).
  11. 如权利要求4所述的电力电子控制器(10)，其特征在于，所述第一逆变功率模块总成(200)和第二逆变功率模块总成(400) 各自还包括电流传感器(260)。The power electronic controller (10) of claim 4, wherein the first inverter power module assembly (200) and the second inverter power module assembly (400) Each also includes a current sensor (260).
  12. 如权利要求1所述的电力电子控制器(10)，其特征在于，所述交流输出端(24)具有对应于第一逆变功率模块总成(200)的第一三相交流输出的三根相线以及对应于第二逆变功率模块总成(400)的第二三相交流输出的三根相线。The power electronic controller (10) of claim 1 wherein said alternating current output (24) has three of said first three-phase AC outputs corresponding to said first inverter power module assembly (200) The phase line and the three phase lines corresponding to the second three-phase AC output of the second inverter power module assembly (400).
  13. 如权利要求12所述的电力电子控制器(10)，其特征在于，所述第一三相交流输出对应的三根相线和第二三相交流输出对应的三根相线对应叠加地电连接在三相交流电机的三相绕组上。The power electronic controller (10) according to claim 12, wherein the three phase lines corresponding to the first three-phase alternating current output and the three phase lines corresponding to the second three-phase alternating current output are electrically connected in a corresponding manner. On the three-phase winding of a three-phase AC motor.
  14. 如权利要求12所述的电力电子控制器(10)，其特征在于，所述第一三相交流输出对应的三根相线和第二三相交流输出对应的三根相线分别电连接在六相交流电机的六相绕组上。The power electronic controller (10) according to claim 12, wherein the three phase lines corresponding to the first three-phase AC output and the three phase lines corresponding to the second three-phase AC output are electrically connected to each other in six phases. On the six-phase winding of the AC motor.
  15. 如权利要求1所述的电力电子控制器(10)，其特征在于，所述电力电子控制器(10)被构造为箱体结构(11)，所述第一逆变功率模块总成(200)、冷却夹层(300)和第二逆变功率模块总成(400)分别用于形成所述箱体结构(11)的上层、中间层和下层。The power electronic controller (10) of claim 1 wherein said power electronic controller (10) is configured as a cabinet structure (11), said first inverter power module assembly (200) The cooling interlayer (300) and the second inverter power module assembly (400) are respectively used to form an upper layer, an intermediate layer and a lower layer of the box structure (11).
  16. 如权利要求15所述的电力电子控制器(10)，其特征在于，所述冷却夹层(300)被配置为所述箱体结构(11)的主箱体的一部分，所述第一逆变功率模块总成(200)和第二逆变功率模块总成(400)对称地分布在所述冷却夹层(300)的上下两侧。The power electronic controller (10) of claim 15 wherein said cooling jacket (300) is configured as part of a main housing of said cabinet structure (11), said first inverter The power module assembly (200) and the second inverter power module assembly (400) are symmetrically distributed on the upper and lower sides of the cooling interlayer (300).
  17. 如权利要求1所述的电力电子控制器(10)，其特征在于，所述电力电子控制器(10)还包括低压控制电路(500)和屏蔽板(600)，其中，所述屏蔽板(600)设置在所述低压控制电路(500)和所述第一逆变功率模块总成(200)或第二逆变功率模块总成(400)之间用于屏蔽高压电流信号的电磁干扰。 The power electronic controller (10) of claim 1 wherein said power electronic controller (10) further comprises a low voltage control circuit (500) and a shield plate (600), wherein said shield plate ( 600) Between the low voltage control circuit (500) and the first inverter power module assembly (200) or the second inverter power module assembly (400) for shielding electromagnetic interference of the high voltage current signal.
PCT/CN2017/092489 2017-06-05 2017-07-11 Power electronic controller, and electric car WO2018223484A1 (en)

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CN201720640198.9 2017-06-05
CN201710412463.2 2017-06-05
CN201720640198.9U CN207368890U (en) 2017-06-05 2017-06-05 Power electronic controller and electric automobile
CN201710412463.2A CN108988655B (en) 2017-06-05 2017-06-05 Electric power electronic controller and electric automobile

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CN105578838A (en) * 2014-10-16 2016-05-11 中山大洋电机股份有限公司 Motor controller
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005020881A (en) * 2003-06-25 2005-01-20 Aisin Aw Co Ltd Drive unit
CN201781409U (en) * 2010-07-30 2011-03-30 比亚迪股份有限公司 Inverter
CN103138602A (en) * 2011-11-30 2013-06-05 永济新时速电机电器有限责任公司 Water-cooling inversion power module
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