CN114244242A - Motor controller for driving motor control system - Google Patents
Motor controller for driving motor control system Download PDFInfo
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- CN114244242A CN114244242A CN202010941475.6A CN202010941475A CN114244242A CN 114244242 A CN114244242 A CN 114244242A CN 202010941475 A CN202010941475 A CN 202010941475A CN 114244242 A CN114244242 A CN 114244242A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
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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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inverter Devices (AREA)
Abstract
本发明涉及一种驱动电机控制系统用电机控制器，包括控制器壳体，所述控制器壳体中紧密设置差模滤波器、接口板，以及集成化设计的两相输入滤波组件、功率逆变组件和三相输出滤波组件，所述控制器壳体的侧面设有输入插件；所述输入插件的输入端与整车高压电池电气连接，所述两相输入滤波组件的输入端和输出端分别与输入插件的输出端和差模滤波器的输入端电气连接，所述功率逆变组件的输入端和输出端分别与差模滤波器的输出端和三相输出滤波组件的输入端电气连接，所述三相输出滤波组件的输出端直接进入驱动电机内部与电机的三相输入端电气连接。与现有技术相比，本发明采用集成化设计，具有结构紧凑、EMC性能优良、装配自动化程度高等优点。
The invention relates to a motor controller for a driving motor control system, comprising a controller casing, in which a differential mode filter, an interface board, and an integrated designed two-phase input filter assembly, a power inverter, and a differential mode filter are closely arranged. Transformer assembly and three-phase output filter assembly, the side of the controller housing is provided with an input plug-in; the input end of the input plug-in is electrically connected to the high-voltage battery of the vehicle, and the input end and output end of the two-phase input filter assembly are respectively electrically connected with the output end of the input plug-in and the input end of the differential mode filter, and the input end and output end of the power inverter assembly are respectively electrically connected with the output end of the differential mode filter and the input end of the three-phase output filter assembly , the output end of the three-phase output filter assembly directly enters the interior of the drive motor and is electrically connected to the three-phase input end of the motor. Compared with the prior art, the present invention adopts an integrated design and has the advantages of compact structure, excellent EMC performance, and high degree of assembly automation.
Description
Technical Field
The invention relates to the field of motor controllers, in particular to a motor controller for a driving motor control system.
Background
With the continuous development of electric vehicles, more and more whole vehicle factories begin to pay attention to the EMC problem of the whole vehicle. The electric automobile mainly provides traction by one (or more) set of electric drive system, and the motor drive system mainly comprises a power battery, a motor controller, a motor, a high-voltage cable and a connector. Research shows that the most main interference sources in the whole electric drive system are the two-phase input end and the three-phase output end of the motor controller, transient voltage and current can be generated by a power module in the working process of the electric drive system, and the rapidly-changed voltage or current forms an interference source through parasitic capacitance and parasitic inductance, so that large electromagnetic disturbance can be generated, the driving safety of a vehicle is influenced, and meanwhile, the electric drive system can conduct or radiate outwards through a propagation path, so that the electric device of the surrounding environment is influenced. And the excessive electromagnetic interference at the three-phase output end also influences the NVH performance of the driving motor and the electromagnetic performance of the whole motor. And when most whole car factories developed electric drive system now, all required motor controller inside to have good filtering design, current motor controller generally only designs two filters of film capacitor and Y2 electric capacity, the simple filtering of mainly used input, because there is high pressure and high current in the middle of the whole electric drive system, very obvious electromagnetic interference will appear in motor controller's two-phase input and three-phase output section, if design and control well, must lead to whole car controller's stability and reliability to receive the influence, also hardly satisfy the demand of whole car. Therefore, strict filtering devices must be added to both the two-phase input terminal and the three-phase output terminal of the motor controller to ensure that no external interference is introduced into the input terminal and that no internal interference is introduced into the driving motor by the output terminal.
Disclosure of Invention
The present invention is directed to a motor controller for a driving motor control system, which overcomes the above-mentioned drawbacks of the prior art.
The purpose of the invention can be realized by the following technical scheme:
a motor controller for a drive motor control system comprises a controller shell, wherein a differential mode filter, an interface board, a two-phase input filter component, a power inverter component and a three-phase output filter component which are designed in an integrated mode are tightly arranged in the controller shell, and an input plug-in is arranged on the side surface of the controller shell; the input of input plug-in components and whole car high voltage battery electrical connection, the input and the output of two-phase input filtering subassembly respectively with the output of input plug-in components and the input electrical connection of differential mode filter, the input and the output of power contravariant subassembly respectively with the output of differential mode filter and the input electrical connection of three-phase output filtering subassembly, the output of three-phase output filtering subassembly directly gets into inside the driving motor and the three-phase input electrical connection of motor.
Preferably, the two-phase input filtering component comprises an input support, and a common-mode filter, a two-phase magnetic core, a positive and negative input copper plate and an input grounding copper bar which are arranged on the input support, the two-phase magnetic core is fixed in an annular groove on the side surface of the input support in an encapsulating manner, the common-mode filter, the input grounding copper bar and the positive and negative input copper plate are respectively provided with two, the positive and negative input copper plates penetrate through the two-phase magnetic core and are fixed on the input support, an input pin of the common-mode filter is electrically connected with input ends of the positive and negative input copper plates, and a grounding pin of the common-mode filter is electrically connected with the input grounding copper bar.
Preferably, the two common mode filters are respectively arranged on two opposite side edges of the input support, the two input grounding copper bars are respectively arranged at the two common mode filters, and the two positive and negative input copper plates are arranged between the two common mode filters side by side.
Preferably, the power inverter assembly comprises a three-phase switching assembly, a current sensor, a power module and a drive control board; the power module is fixed below the driving control board and is electrically connected with the driving control board; the current sensor is fixed on the power module and positioned on one side of the driving control board, and a pin of the current sensor is electrically connected with the driving control board; and the input end of the three-phase switching assembly penetrates through the current sensor and is electrically connected with the output end of the power module, and then the three-phase switching assembly is fixed on the current sensor.
Preferably, the three-phase switching assembly comprises a three-phase switching support and a three-phase switching copper plate, and the three-phase switching copper plate is bent and fixed in a clamping groove of the three-phase switching support.
Preferably, three-phase output filter subassembly includes three-phase output copper, epitheca, three-phase magnetic core and inferior valve, three-phase magnetic core card is in the recess at inferior valve top, inferior valve and epitheca lock are closed and are pressed from both sides the three-phase magnetic core tightly in the middle of them, three-phase output copper passes epitheca, three-phase magnetic core and inferior valve in proper order.
Preferably, the up end of epitheca is equipped with three first rectangle through-hole, the up end of inferior valve is equipped with an annular groove, the inside three second rectangle through-hole that communicates with first rectangle through-hole that is equipped with of annular groove.
Preferably, the bottom surface of the controller shell is provided with a water channel inlet and a water channel outlet, and the water channel inlet and the water channel outlet are respectively communicated with two ends of the power module heat dissipation water tank.
Preferably, the bottom surface of the controller shell is further provided with a cuboid-shaped three-phase hole.
Preferably, the controller casing includes a cover body, and an annular reinforcing rib is arranged on the upper surface of the cover body.
Compared with the prior art, the invention has the following advantages:
1. the motor controller adopts an integrated design, the interior of the whole motor controller mainly comprises three parts, namely a two-phase input filter component, a power inverter component and a three-phase output filter component, and the three components are all integrated module designs, so that the motor controller has the advantages of high integration level, small occupied volume and reliable structure, and can meet the requirement of simple and convenient disassembly and assembly of the motor controller.
2. The power contravariant subassembly includes three-phase switching subassembly, current sensor, power module, drive control panel, the module support, drive control panel fixes directly over the module, stitch and drive control panel electrical connection above the power module, power module's input is fixed above the module support, current sensor fixes above the power module, and current sensor's stitch and drive control panel electrical connection, three-phase switching subassembly's input passes current sensor's center and fixes on current sensor with power module's output electrical connection after, this subassembly integration level itself is high, can satisfy the automatic assembly of off-line, carry out the assembly on-line with the form of piece at last again.
3. The two-phase input filtering component comprises a positive and negative input copper plate, a two-phase magnetic core, an input support, an input grounding copper bar and a common mode filter, wherein high-voltage input of the motor controller firstly passes through the first filtering of the common mode filter, then passes through the second filtering of the two-phase magnetic core, then enters the differential mode filter from the output ends of the positive and negative input copper plates for the third filtering treatment, and finally enters the inside of the module.
4. The three-phase output filtering component comprises a three-phase output copper plate, an upper shell, a three-phase magnetic core and a lower shell, wherein the three-phase output copper plate directly penetrates through the center of the three-phase magnetic core to be connected into the driving motor, and is electrically connected with the three-phase input end of the motor, so that the magnetic core filtering is increased at the three-phase output position, the influence of the interference of the input end on the driving motor can be effectively reduced, and a better output filtering effect is achieved.
Drawings
FIG. 1 is an exploded view of the motor controller of the present invention;
FIG. 2 is a schematic diagram of a power inverter assembly of the motor controller according to the present invention;
FIG. 3 is a schematic diagram of a two-phase input filter assembly of the motor controller of the present invention;
FIG. 4 is a schematic structural diagram of a three-phase switching assembly of the motor controller of the present invention;
FIG. 5 is a schematic diagram of a three-phase output filter assembly of the motor controller of the present invention;
FIG. 6 is a schematic diagram of a controller housing of the motor controller of the present invention;
FIG. 7 is a schematic diagram of a cover structure of the motor controller according to the present invention;
the figure is marked with: 1. the device comprises a controller shell 1-1, a water channel inlet 1-2, a water channel outlet 1-3, a three-phase hole 2, an input plug-in 3, a two-phase input filter component 3-1, a positive and negative input copper plate 3-2, a two-phase magnetic core 3-3, an input support 3-4, an input grounding copper bar 3-5, a common mode filter 4, a differential mode filter 5, an interface plate 6, a power inversion component 6-1, a three-phase switching component 6-1-1, a three-phase switching support 6-1-2, a three-phase switching copper plate 6-2, a current sensor 6-3, a power module 6-4, a drive control plate 6-5, a module support 7, a three-phase output filter component 7-1 and a three-phase output copper plate, 7-2 parts of an upper shell, 7-3 parts of a three-phase magnetic core, 7-4 parts of a lower shell, 8 parts of a water inlet pipe, 9 parts of a cover body.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
As shown in fig. 1, the present application provides a motor controller for a drive motor control system, which includes a controller housing 1, an input plug-in 2, a two-phase input filter component 3, a differential mode filter 4, an interface board 5, a power inverter component 6, a three-phase output filter component 7, a water inlet pipe 8, and a cover 9. The input plug-in 2 is fixed on the side of the controller shell 1, and the input end of the input plug-in is electrically connected with the high-voltage battery of the whole vehicle. The two-phase input filtering component 3, the differential mode filter 4, the interface board 5, the power inversion component 6 and the three-phase output filtering component 7 are all fixed at the bottom of the controller shell 1. The input end of the two-phase input filtering component 3 is electrically connected with the output end of the input plug-in component 2, and the output end of the two-phase input filtering component 3 is electrically connected with the input end of the differential mode filter 4. The output end of the differential mode filter 4 is electrically connected with the input end of the power inversion component 6. The output end of the power inversion component 6 is electrically connected with the input end of the three-phase output filter component 7. The output end of the three-phase output filter component 7 directly enters the interior of the driving motor and is electrically connected with the three-phase input end of the motor. The water inlet pipe 8 is fixed on the side surface of the controller shell 1. The cover 9 is fixed right above the controller case 1.
As shown in fig. 2, the power inverter assembly 6 includes a three-phase switching assembly 6-1, a current sensor 6-2, a power module 6-3, a driving control board 6-4, and a module support 6-5. The driving control board 6-4 is fixed right above the power module 6-3, a pin on the power module 6-3 is electrically connected with the driving control board 6-4, and the input end of the power module 6-3 is fixed on the module support 6-5. The current sensor 6-2 is fixed on the power module 6-3 and located at one side of the driving control board 6-4, and a pin of the current sensor 6-2 is electrically connected with the driving control board 6-4. The input end of the three-phase switching assembly 6-1 penetrates through the center of the current sensor 6-2, is electrically connected with the output end of the power module 6-3 and then is fixed on the current sensor 6-2.
As shown in fig. 3, the two-phase input filter assembly 3 includes a positive and negative input copper plate 3-1, a two-phase magnetic core 3-2, an input support 3-3, an input ground copper bar 3-4, and a common mode filter 3-5. Wherein the two-phase magnetic core 3-2 is fixed in the annular groove on the side of the input support 3-3 in an encapsulating way. The number of the input grounding copper bars 3-4 is two, and the two input grounding copper bars are fixed on the fixing holes of the input support 3-3. The positive and negative input copper plates 3-1 are fixed on the input support 3-3 through the magnetic core. The two common mode filters 3-5 are sealed and sealed in grooves which are arranged at a certain distance relatively in the input support 3-3 through silica gel, the positive and negative input pins of the common mode filters 3-5 are respectively and electrically connected with the input ends of the positive and negative input copper plates 3-1, and the grounding pins of the common mode filters 3-5 are electrically connected with the input grounding copper bars 3-4. Two common mode filters 3-5 are respectively arranged on two opposite sides of the input support 3-3, two input grounding copper bars 3-4 are respectively arranged at the two common mode filters 3-5, and two positive and negative input copper plates 3-1 are arranged between the two common mode filters 3-5 side by side.
As shown in fig. 4, the three-phase transition assembly 6-1 includes a three-phase transition support 6-1-1 and a three-phase transition copper plate 6-1-2. The three-phase switching copper plate 6-1-2 is bent, placed in a clamping groove of the three-phase switching support 6-1-1 and fixed on the three-phase switching support 6-1-1 to form a whole. The input end of the three-phase switching copper plate 6-1-2 penetrates through the center of the current sensor 6-2, is electrically connected with the output end of the power module 6-3 and then is fixed on the current sensor 6-2.
As shown in fig. 5, the three-phase output filter assembly 7 includes a three-phase output copper plate 7-1, an upper case 7-2, a three-phase magnetic core 7-3, and a lower case 7-4. The three-phase magnetic core 7-3 is clamped in the flower-shaped groove on the lower shell 7-4, and the upper shell 7-2 and the lower shell 7-4 are buckled together to clamp the three-phase magnetic core 7-3 in the middle. The three-phase output copper plate 7-1 directly penetrates through the centers of the upper shell 7-2, the three-phase magnetic core 7-3 and the lower shell 7-4 to finally form an integral three-phase output filter assembly 7. The input end of the three-phase output copper plate 7-1 is electrically connected with the output end of the three-phase switching copper plate 7-1 of the three-phase switching assembly 7, and the output end of the three-phase output copper plate 7-1 directly enters the interior of the driving motor to be electrically connected with the three-phase input end of the motor.
As shown in fig. 6, a water channel inlet 1-1, a water channel outlet 1-2, and a three-phase hole 1-3 are disposed on the bottom surface of the controller housing 1, wherein the water channel inlet 1-1 and the water channel outlet 1-2 are communicated with two ends of the heat sink of the power module 6-3.
As shown in FIG. 7, the upper surface of the cover 9 has two circular rings with reinforcing ribs, and an oval boss is arranged inside the inner circular ring.
The specific assembly process of the motor controller is as follows:
the related components are first assembled offline:
1. first, the two-phase input filter module 3 is assembled: encapsulating a two-phase magnetic core 3-2 and a common mode filter 3-5 at corresponding positions on an input support 3-3, then enabling a positive input copper plate 3-1 and a negative input copper plate 3-1 to penetrate through the middle of the two-phase magnetic core 3-2 encapsulated by the input support 3-3 and fixing the positive input copper plate and the negative input copper plate on the input support 3-3 by bolts, fixing an input grounding copper bar 3-4 on the input support 3-3, then respectively welding positive and negative input pins of the common mode filter 3-5 with the positive and negative input copper plates 3-1, and welding the grounding pins with the input grounding copper bar 3-4;
2. and then assembling the three-phase switching assembly 6-1: placing the three-phase transfer copper plate 6-1-2 in a corresponding clamping groove of the three-phase transfer support 6-1-1, and fixing the three-phase transfer copper plate 6-1-2 on the three-phase transfer support 6-1-1 by using bolts;
3. then, assembling a power inverter assembly 6: firstly, fixing a driving control board 6-4 above a power module 6-3, welding and fixing a pin of the power module 6-3 and the driving control board 6-4 by soldering, then fixing a current sensor 6-2 on the power module 6-3, fixing a pin of the current sensor 6-2 on the driving control board 6-4 by soldering, then enabling an input end of a three-phase switching assembly 6-1 to penetrate through the current sensor 6-2 and be connected with an output end of the power module 6-3 to be fixed on the current sensor 6-2, and finally fixing an input end of the power module 6-3 on a module support 6-5;
4. and then assembling a three-phase output filtering component 7: firstly, a three-phase magnetic core 7-3 is placed in a groove on the upper surface of a lower shell 7-4, then an upper shell 7-2 and the lower shell 7-4 are buckled, the three-phase magnetic core 7-3 is tightly pressed and sealed in the three-phase magnetic core, and finally a three-phase output copper plate 7-1 is inserted from three rectangular through holes on the upper surface of the upper shell 7-4 to complete the assembly of a three-phase output filtering component 7;
5. assembling the motor controller on a line:
(1) firstly, a water inlet pipe 8 is pressed at an inlet position of the bottom surface of a controller shell 1 through a press machine, and then an interface board 5, a two-phase input filter component 3, a power inverter component 6 and a three-phase output filter component 7 are fixed at the bottom surface of the controller shell 1 through bolts;
(2) the output end of a positive and negative input copper plate 3-1 of the two-phase input filtering component 3 and the input end of a differential mode filter 4 are fixed together by using bolts, the output end of the differential mode filter 4 and the input end of a power module 6-3 are connected and fixed on a module support 6-5 by using bolts, and then the output end of a three-phase switching copper plate 6-1-2 of the power inversion component 6 is fixed on the input end of a three-phase output copper plate 7-1 of a three-phase output filtering component 7 by using bolts;
(3) then fixing the input plug-in 2 on the side wall of the controller shell 1, and connecting and fixing the output end of the input plug-in 2 and the positive and negative input copper plates 3-1 input ends of the two-phase input filter assembly 3 on the input support 3-3 by bolts;
(4) and finally, fixing the cover body 9 right above the controller shell 1, and completing the assembly of the whole motor controller.
Claims (10)
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| CN202010941475.6A CN114244242A (en) | 2020-09-09 | 2020-09-09 | Motor controller for driving motor control system |
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| CN202010941475.6A CN114244242A (en) | 2020-09-09 | 2020-09-09 | Motor controller for driving motor control system |
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| CN111490323A (en) * | 2020-05-13 | 2020-08-04 | 合肥巨一动力系统有限公司 | Integrated bus EMC filtering structure |
| CN212572453U (en) * | 2020-09-09 | 2021-02-19 | 上海汽车电驱动有限公司 | Motor controller for driving motor control system |
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