CN112677749A - Integrated electric drive system and electric automobile - Google Patents
Integrated electric drive system and electric automobile Download PDFInfo
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- CN112677749A CN112677749A CN202011575264.1A CN202011575264A CN112677749A CN 112677749 A CN112677749 A CN 112677749A CN 202011575264 A CN202011575264 A CN 202011575264A CN 112677749 A CN112677749 A CN 112677749A
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Abstract
The embodiment of the application provides an integrated electric drive system, the motor controller that will be used for controlling first disc motor and second disc motor sets up between first disc motor and second disc motor, utilize the output of the direct independent drive-by-wire first disc motor of motor controller and second disc motor, replace traditional mechanical reduction gear, and two terminal surfaces of motor controller are fixed mutually with first disc motor and second disc motor respectively, first disc motor and second disc motor all are cylindrically, motor controller is the disc type, and motor controller's external diameter is the same with the external diameter of first disc motor and second disc motor, whole electrical control mechanism is a complete cylinder, the shape is regular, do benefit to chassis platformization, the research and development cycle of motorcycle type has been accelerated.
Description
Technical Field
The application relates to the technical field of electric automobiles, in particular to an integrated electric drive system and an electric automobile.
Background
Currently, with the rapid economic development of human society, non-renewable resources such as petroleum energy face the threat of exhaustion, and the environmental pollution is getting more and more serious. Therefore, electric vehicles are receiving global attention as an alternative to fuel vehicles.
The drive power source of electric automobile is driving motor, in order to satisfy climbing and the demand of acceleration performance, generally need be for the more powerful driving motor of electric automobile assembly, and the required power of the most actual operation operating mode of whole car is less relatively, for improving actual operation economy, current solution generally increases mechanical reducer, driving motor's output is through mechanical reducer with torque transmission to left and right sides drive shaft after slowing down again.
In implementing the present disclosure, the inventors found that the related art has at least the following problems: the additional arrangement of the mechanical speed reducer can increase the arrangement difficulty of the whole driving system, is not beneficial to chassis platformization, and slows down the research and development period of the vehicle type.
Disclosure of Invention
In view of this, this application provides an integrated electric drive system and electric automobile, need not to set up mechanical reduction gear, and compact structure does benefit to chassis platformization for the research and development cycle of new motorcycle type.
Specifically, the method comprises the following technical scheme:
in one aspect, the present application provides an integrated electric drive system that includes a first disc motor, a second disc motor, and a motor controller.
The motor controller is arranged between the first disc motor and the second disc motor, and two end faces of the motor controller are fixed with the first disc motor and the second disc motor respectively.
The motor controller is configured to electrically connect with the first and second disc motors, and the motor controller is configured to control the first and second disc motors and simultaneously provide power to the first and second disc motors.
The first disc motor and the second disc motor are both cylindrical, the motor controller is disc-shaped, and the outer diameter of the motor controller is the same as that of the first disc motor and that of the second disc motor.
Optionally, the system further comprises a power battery.
The output end of the power battery is electrically connected with the input end of the motor controller.
The power battery is configured to deliver direct current to the motor controller.
Optionally, the motor controller includes a first power board and a second power board.
The first power board is disposed in the motor controller on a side adjacent to the first disc motor.
The first power board is configured to convert direct current received at an input of the motor controller to alternating current suitable for use by the first disc motor.
The second power board is disposed on a side of the motor controller near the second disc motor.
The second power board is configured to convert direct current received at the input of the motor controller to alternating current suitable for use by the second disc motor.
Optionally, at least two first modules and at least one first capacitor are disposed in the first power board.
At least two second modules and at least one second capacitor are arranged in the second power board.
At least two first modules are arranged in parallel, the at least two first modules are connected with a first capacitor, and the first capacitor is perpendicular to the axis of the at least two first modules.
At least two second modules are arranged in parallel, the at least two second modules are connected with a second capacitor, and the second capacitor is perpendicular to the axis of the at least two second modules.
Optionally, the first module and the second module are insulated gate bipolar transistor modules, and the first capacitor and the second capacitor are thin film capacitors.
The first and second modules are configured to convert direct current received at an input of the motor controller to alternating current.
The first capacitor is configured to reduce ripple of the direct current in the first power plate and the second capacitor is configured to reduce ripple of the direct current in the second power plate.
Optionally, the motor controller further comprises a main control board disposed between the first power board and the second power board.
The main control board is electrically connected with the first power board and the second power board.
The main control board is configured to control outputs of the first power board and the second power board.
Optionally, the system further comprises a cooling circuit.
The cooling pipeline comprises a first electric control cooling pipeline, a second electric control cooling pipeline, a first motor cooling pipeline and a second motor cooling pipeline.
A first electronically controlled cooling circuit is disposed between the first power board and the main control board.
The second electrically controlled cooling circuit is disposed between the second power board and the main control board.
The first motor cooling circuit is configured to helically surround the housing of the first disc motor.
The second motor cooling line is configured to helically surround the housing of the second disc motor.
Optionally, the water outlet of the first electronically controlled cooling circuit is configured to communicate with the water inlet of the first motor cooling circuit.
The water outlet of the second electronically controlled cooling circuit is configured to communicate with the water inlet of the second motor cooling circuit.
The water inlets of the first and second electrically controlled cooling pipelines are arranged on the housing of the motor controller.
The water outlets of the first motor cooling pipeline and the second motor cooling pipeline are respectively arranged at one ends, far away from the motor controller, of the shells of the first disc motor and the second disc motor.
Optionally, the first disc motor further comprises a first output shaft and the second disc motor further comprises a second output shaft.
The first output shaft and the second output shaft are coaxial and face towards one side far away from the motor controller.
The first output shaft and the second output shaft are configured to drive two wheels on different sides of each other, respectively.
In another aspect, the present application further provides an electric vehicle including the integrated electric drive system provided in the first aspect.
The technical scheme provided by the application has the beneficial effects that:
the application provides an integrated electric drive system and electric automobile, the motor controller that will be used for controlling first disc motor and second disc motor sets up between first disc motor and second disc motor, utilizes the output of motor controller direct control first disc motor and second disc motor, replaces traditional mechanical reduction gear, and two terminal surfaces of motor controller are fixed mutually with first disc motor and second disc motor respectively, compact structure. First disc motor and second disc motor all are cylindrically, and motor controller is the disc type, and motor controller's external diameter is the same with first disc motor and second disc motor's external diameter, and motor controller, first disc motor and the whole electrical control mechanism that second disc motor three constitutes are a complete cylinder, and the shape is regular, do benefit to chassis platformization for the research and development cycle of motorcycle type.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of an integrated electric drive system provided in an embodiment of the present application;
FIG. 2 is another block diagram of an integrated electric drive system provided in accordance with an embodiment of the present application;
FIG. 3 is another block diagram of an integrated electric drive system provided in accordance with an embodiment of the present application;
FIG. 4 is another block diagram of an integrated electric drive system provided in accordance with an embodiment of the present application;
FIG. 5 is another block diagram of an integrated electric drive system provided in accordance with an embodiment of the present application;
FIG. 6 is another block diagram of an integrated electric drive system provided in accordance with an embodiment of the present application.
The reference numerals in the figures are respectively:
1-a first disc motor;
101-a first output shaft;
2-a second disc motor;
201-a second output shaft;
3-a motor controller;
301-a first power board;
3011-a first module;
3012-a first capacitance;
302-a second power board;
3021-a second module;
3022-a second capacitance;
303-main control board;
4-a power battery;
5-a cooling pipeline;
501-a first electrically controlled cooling circuit;
502-a second electronically controlled cooling circuit;
503-first motor cooling circuit;
504-second motor cooling circuit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Before further detailed description of the embodiments of the present application, the directional terms referred to in the embodiments of the present application are used only for clearly describing the structure of the integrated electric drive system of the embodiments of the present application, and do not have a meaning of limiting the scope of the present application.
At present, electric automobiles are in the early stage of vigorous development and popularization, and high-efficiency compact integrated electric drive assemblies become the key point of discussion. Efficient and compact integrated electronic drive designs need to be considered in a comprehensive manner in terms of structure, cooling, efficiency, cost, control, platformization, and the like. A good integrated electricity drives can reach the comprehensive optimum in several aspects such as operating efficiency, cost, cooling effect, and the structure is ingenious simultaneously, and interchangeability is good, can carry out the platform ization management.
In order to have the advantages of the electric driving system in aspects of dynamic property, economy, cost, cooling, compact structure and the like, the pure electric automobile on the market at present has an electric driving assembly structure with various schemes, and the mainstream of the electric driving assembly structure mainly comprises a single motor, a single electric control and a single-stage speed reducer, a single motor, a single electric control and a two-gear speed reducer, and a double motor, a double electric control and a two-gear speed reducer. However, these structures are either too powerful to be economical, or they are complex, bulky, heavy and complicated to shift control. Based on this, cancel reduction gear and differential mechanism, realize that the independent drive-by-wire of motor will be future development direction, let the automatically controlled perfect integration of realization of motor simultaneously, what do the structure of the assembly of driving electrically compacter, do benefit to the platformization more, will be a key of the integrated design direction of driving electrically.
Based on this, this application embodiment provides an integrated electric drive system and electric automobile, specifically as follows:
the embodiment of the application provides an integrated electric drive system, as shown in fig. 1, the system includes a first disc motor 1, a second disc motor 2 and a motor controller 3.
The motor controller 3 is provided between the first disc motor 1 and the second disc motor 2, and both end surfaces of the motor controller 3 are fixed to the first disc motor 1 and the second disc motor 2, respectively.
Specifically, the motor controller 3 and the first disc motor 1, and the motor controller 3 and the second disc motor 2 may be fixed to each other by flanges, and bolts may be provided at corresponding positions.
In addition, the corresponding positions of the end surfaces of the motor controller 3, the first disc motor 1 and the second disc motor 2 can also be provided with groove rabbets, so that the groove rabbets are mutually meshed to ensure that the motor controller 3, the first disc motor 1 and the second disc motor 2 are coaxial. When in installation, waterproof adhesive glue can be coated on the periphery of the occlusion to strengthen the fixation.
It can be understood that the first disk motor 1 and the second disk motor 2 are placed back to back, and the first disk motor 1 and the second disk motor 2 output power to both sides respectively so as to cater to the transmission structure of the whole vehicle.
The disc type motor refers to a disc type permanent magnet motor, also called an axial permanent magnet motor, and has the advantages of compact structure, high efficiency, large power density, large torque and the like. The air gap of the disc type motor is in a plane shape, the air gap magnetic field is distributed along the axial direction, and the problems of low iron core utilization rate, difficult cooling and the like of the traditional cylindrical motor can be solved. The disc type motor is particularly suitable for being applied to occasions requiring high torque density and compact space, such as electric vehicles, renewable energy systems, energy storage systems, industrial equipment and the like.
The motor controller 3 is electrically connected to the first and second disc motors 1 and 2, and the motor controller 3 is configured to control the first and second disc motors 1 and 2 and simultaneously supply power to the first and second disc motors 1 and 2.
Specifically, the motor controller 3 may establish an electrical connection with the first disc motor 1 and the second disc motor 2 by using a three-phase interface, and the motor controller 3 may transmit three-phase ac power to the first disc motor 1 and the second disc motor 2 through the three-phase interface.
The first disc motor 1 and the second disc motor 2 are both cylindrical, the motor controller 3 is disc-shaped, and the outer diameter of the motor controller 3 is the same as the outer diameter of the first disc motor 1 and the second disc motor 2.
By adopting the integrated electric drive system provided by the embodiment of the application, the motor controller 3 for controlling the first disc motor 1 and the second disc motor 2 is arranged between the first disc motor 1 and the second disc motor 2, the output of the first disc motor 1 and the output of the second disc motor 2 are directly controlled by the motor controller 3 to replace the traditional mechanical reducer, two end surfaces of the motor controller 3 are respectively fixed with the first disc motor 1 and the second disc motor 2, the structure is compact, the first disc motor 1 and the second disc motor 2 are both cylindrical, the motor controller 3 is disc-shaped, the outer diameter of the motor controller 3 is the same as the outer diameters of the first disc motor 1 and the second disc motor 2, the whole electric control mechanism formed by the motor controller 3, the first disc motor 1 and the second disc motor 2 is a complete cylinder and has compact structure, the arrangement is convenient, the cooling is facilitated, the chassis platformization is facilitated, and the research and development period of the vehicle type is accelerated.
Most of electric appliances on the electric automobile, such as air conditioners, multimedia equipment or vehicle lamps, are driven by low-voltage direct current, and the low-voltage direct current can be stored in a low-voltage storage battery. Whereas, for the power system, the first disc motor 1 and the second disc motor 2 are adapted to be driven by alternating current, one of the functions performed by the motor controller 3 is to convert high-voltage direct current into alternating current that can be used by the first disc motor 1 and the second disc motor 2. High voltage dc is a power source for electric vehicles and needs to be stored in a dedicated battery, and therefore:
in some alternative embodiments, as shown in fig. 2, the system further comprises a power battery 4.
The output end of the power battery 4 is electrically connected with the input end of the motor controller 3.
The power battery 4 is configured to deliver direct current to the motor controller 3.
In some alternative embodiments, as shown in fig. 3, the motor controller 3 includes a first power board 301 and a second power board 302.
The first power board 301 is provided on the side of the motor controller 3 close to the first disc motor 1.
The first power board 301 is configured to convert dc power received at the input of the motor controller 3 to ac power suitable for use by the first disc motor 1.
The second power board 302 is provided on the side of the motor controller 3 close to the second disc motor 2.
The second power board 302 is configured to convert the direct current received by the input of the motor controller 3 into alternating current suitable for use by the second disc motor 2.
It can be understood that the first power board 301 and the second power board 302 are symmetrically disposed and parallel to each other, so that the structure inside the motor controller 3 is more regular and is beneficial to cooling. In some alternative embodiments, as shown in fig. 4, at least two first modules 3011 and at least one first capacitor 3012 are disposed in the first power board 301.
As shown in fig. 5, at least two second modules 3021 and at least one second capacitor 3022 are disposed in the second power board 302.
At least two first modules 3011 are arranged in parallel, at least two first modules 3011 are connected to a first capacitor 3012, and the first capacitor 3012 is perpendicular to the axes of at least two first modules 3011.
It can be understood that, since the clock line is perpendicular to the I/O line and less electromagnetic interference is generated than the parallel I/O line, the first capacitor 3012 and the at least two first modules 3011 are arranged on the plane of the first power board 301, so that the axes are perpendicular to each other, which can improve the capability of the first power board 301 to resist electromagnetic interference.
At least two second modules 3021 are arranged in parallel, at least two second modules 3021 are connected to a second capacitor 3022, and the second capacitor 3022 is perpendicular to the axes of the at least two second modules 3021.
It will be appreciated that, similar to the first power board 301, since the clock line is less electromagnetic interference perpendicular to the I/O lines than parallel I/O lines, arranging the second capacitor 3022 and the at least two second modules 3021 with axes perpendicular to each other on the plane of the second power board 302 also improves the capability of the second power board 302 to resist electromagnetic interference.
In some alternative embodiments, the first module 3011 and the second module 3021 are igbt modules, and the first capacitor 3012 and the second capacitor 3022 are thin film capacitors.
The first and second modules 3011 and 3021 are configured to convert direct current received at an input of the motor controller 3 to alternating current.
It can be understood that an Insulated Gate Bipolar Transistor (IGBT) module is a composite fully-controlled voltage-driven power semiconductor device composed of a Bipolar Transistor and an Insulated Gate field effect Transistor, and is a core device for energy conversion and transmission, and can convert direct current into alternating current.
In some alternative embodiments, instead of an Insulated Gate Bipolar Transistor (IGBT) module, the first module 3011 and the second module 3021 may also include at least two Metal-Oxide-Semiconductor Field Effect transistors (MOSFETs) connected in parallel, respectively.
The first capacitor 3012 is configured to reduce the ripple of the direct current in the first power board 301 and the second capacitor 3022 is configured to reduce the ripple of the direct current in the second power board 302.
In the first power board 301, the first capacitor 3012 is used as a bus connected to at least one first module 3011 arranged in parallel, and can store electric energy and make the filtered output voltage be a stable dc voltage, and the operating principle is as follows:
when the rectified voltage is higher than the capacitor voltage, the first capacitor 3012 is charged, and when the rectified voltage is lower than the capacitor voltage, the first capacitor 3012 is discharged, so that the output voltage is basically stable in the charging and discharging processes. In other words, the first power board 301 is charged when the peak arrives, the peak is cut off, and the second power board is discharged when the valley arrives, and the valley is filled, thereby reducing the ripple of the direct current in the first power board 301.
Similarly, in the second power board 302, the second capacitor 3022 serves as a bus connecting at least one second module 3021 arranged in parallel, and is also capable of storing electric energy and making the filtered output voltage a stable dc voltage, and the operation principle is as follows:
when the rectified voltage is higher than the capacitor voltage, the second capacitor 3022 is charged, and when the rectified voltage is lower than the capacitor voltage, the second capacitor 3022 is discharged, so that the output voltage is substantially stabilized during charging and discharging. In other words, the charging at the arrival of the peak cuts off the peak, and the discharging at the arrival of the valley fills up the valley, thereby also reducing the ripple of the direct current in the second power board 302.
The first capacitor 3012 and the second capacitor 3022 are both thin film capacitors, which are manufactured by stacking a metal foil as an electrode with a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate from both ends and winding the stack into a cylindrical shape.
By using the thin-film capacitor as the first capacitor 3012 and the second capacitor 3022, the first capacitor 3012 and the second capacitor 3022 have the advantages of no polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), small dielectric loss, and the like.
In some alternative embodiments, the motor controller 3 further includes a main control board 303 disposed between the first power board 301 and the second power board 302.
The main control board 303 is electrically connected to the first power board 301 and the second power board 302.
Specifically, in order to ensure the heat dissipation effect of the motor controller 3, the main control board 303 and the first power board 301 and the second power board 302 may be connected by using a low-voltage flat cable disposed on the housing of the motor controller 3, so that the gap between the main control board 303 and the first power board 301 and the gap between the main control board 303 and the second power board 302 may be used for passing the cooling liquid, thereby improving the cooling effect.
The main control board 303 is configured to control the outputs of the first power board 301 and the second power board 302.
Specifically, the main control board 303 may control the first power board 301 and the second power board 302 to output three-phase sinusoidal alternating current by using Space Vector Pulse Width Modulation (SVPWM).
It CAN be understood that the main control board 303 CAN also utilize the CAN bus connection with the vehicle controller to according to the present operating mode of vehicle that the vehicle controller gathered, the output of first power board 301 and second power board 302 is controlled in a flexible way, thereby makes first disk motor 1 and second disk motor 2 CAN carry out power take off according to the present operating mode of vehicle in a flexible way, better drip different operating modes of adaptation, reduce power consumption on the basis of satisfying the power demand.
The motor controller 3 may further be provided with two three-phase output slots, where the two three-phase output slots are electrically connected to the first power board 301 and the second power board 302 respectively, and are used to output three-phase alternating currents obtained after the conversion of the first power board 301 and the second power board 302, and output the three-phase alternating currents to the first disc motor 1 and the second disc motor 2 on the corresponding sides respectively.
Specifically, the three-phase alternating current refers to a current composed of three alternating currents having the same frequency, the same potential amplitude, and the phase difference of 120 ° from each other.
The first disc motor 1 and the second disc motor 2 may be respectively provided with corresponding three-phase input plugs for receiving three-phase alternating current input from the first power board 301 and the second power board 302 in the motor controller 3.
The three-phase output slot is combined with the three-phase input plug to form a three-phase interface.
Specifically, the three-phase output slot and the three-phase input plug can be both made of copper, the resistance of copper metal is low, and the electric energy transmission efficiency is guaranteed.
In some alternative embodiments, as shown in fig. 6, the system further comprises a cooling circuit 5.
The cooling circuit 5 comprises a first electrically controlled cooling circuit 501, a second electrically controlled cooling circuit 502, a first motor cooling circuit 503 and a second motor cooling circuit 504.
A first electronically controlled cooling circuit 501 is provided between the first power board 301 and the main control board 303.
Specifically, the first electrically controlled cooling pipeline 501 may be U-shaped or spiral, so as to ensure a cooling effect.
A second electronically controlled cooling circuit 502 is disposed between second power board 302 and main control board 303.
Similarly, the first electrically controlled cooling pipeline 501 may be U-shaped or spiral, so as to ensure the cooling effect.
Since the cooling pipes 5 are provided between the main control board 303 and the second power board 302, and between the main control board 303 and the first power board 301, the cooling effect is improved.
The first motor cooling line 503 is configured to spirally surround the housing of the first disc motor 1.
The second motor cooling line 504 is configured to helically surround the housing of the second disc motor 2.
In some optional embodiments, the first motor cooling pipeline 503 and the second motor cooling pipeline 504 may also be U-shaped, which reduces the difficulty of arrangement on the basis of ensuring the cooling effect.
In some alternative embodiments, the water outlet of the first electronically controlled cooling circuit 501 is configured to communicate with the water inlet of the first motor cooling circuit 503.
The water outlet of the second electronically controlled cooling circuit 502 is configured to communicate with the water inlet of the second motor cooling circuit 504.
In some alternative embodiments, the insertion between the water outlet of the first electrically controlled cooling pipeline 501 and the water inlet of the first motor cooling pipeline 503 can also be used to fix the end surface of the motor controller 3 and the end surface of the first disc motor 1 for positioning.
Similarly, the insertion between the water outlet of the second electrically controlled cooling pipeline 502 and the water inlet of the second motor cooling pipeline 504 can also be used for fixing the end face of the motor controller 3 and the end face of the second disc motor 2, so as to play a positioning role.
The water inlets of the first and second electronically controlled cooling lines 501, 502 are arranged on the housing of the motor controller 3.
In some alternative embodiments, the water inlets of the first electronically controlled cooling circuit 501 and the second electronically controlled cooling circuit 502 may be shared, and the cooling fluid is introduced from a uniform water inlet and enters the first electronically controlled cooling circuit 501 and the second electronically controlled cooling circuit 502 after being divided.
It can be understood that the water outlet of the first electrically controlled cooling pipeline 501 is communicated with the water inlet of the first motor cooling pipeline 503, and the water outlet of the second electrically controlled cooling pipeline 502 is communicated with the water inlet of the second motor cooling pipeline 504, in this case, when the first electrically controlled cooling pipeline 501 and the second electrically controlled cooling pipeline 502 share the water inlet, the motor controller 3, the first disc motor 1 and the second disc motor 2 share one complete set of cooling pipeline 5, so that the arrangement difficulty is reduced on the basis of ensuring the heat dissipation effect, and the cost is reduced.
The water outlets of the first motor cooling pipeline 503 and the second motor cooling pipeline 504 are respectively arranged at one ends of the housings of the first disc motor 1 and the second disc motor 2 far away from the motor controller 3.
The high symmetry of cooling pipeline 5 also can improve whole electric drive system's regularity, the dismouting of being convenient for.
In some alternative embodiments, as shown in fig. 2, the first disc motor 1 further includes a first output shaft 101, and the second disc motor 2 further includes a second output shaft 201.
The first output shaft 101 and the second output shaft 201 are coaxial and both face the side away from the motor controller 3.
The first output shaft 101 and the second output shaft 201 are configured to drive two wheels on different sides from each other, respectively.
In some alternative embodiments, the first output shaft 101 may be configured to drive the left side wheels and the second output shaft 201 may be configured to drive the right side wheels.
In some alternative embodiments, the first output shaft 101 may be configured to drive a right wheel and the second output shaft 201 may be configured to drive a left wheel.
Specifically, the first output shaft 101 and the second output shaft 201 can be used for driving the front wheels to realize forward driving.
The first output shaft 101 and the second output shaft 201 can also be used for driving the rear wheels, thereby realizing rear drive.
For a four-wheel drive vehicle model, the integrated electric drive system provided by the embodiment of the application can be respectively arranged on the front shaft and the rear shaft, the arrangement difficulty is low, and the expansion application capability is strong.
In the embodiment of the present application, two end surfaces of the motor controller 3 are respectively fixed to the first disc motor 1 and the second disc motor 2, the structure is compact, the first disc motor 1 and the second disc motor 2 are both cylindrical, the motor controller 3 is in a disc shape, the outer diameter of the motor controller 3 is the same as the outer diameters of the first disc motor 1 and the second disc motor 2, and the whole electric control mechanism formed by the motor controller 3, the first disc motor 1 and the second disc motor 2 is a complete cylinder, so that a shielding layer or a sound-proof cover is conveniently wrapped on the surface of the whole electric control mechanism, and the anti-electromagnetic interference capability of the integrated electric drive system and the Noise, Vibration and Harshness (Noise, Vibration and Harshness, NVH) performance of the whole vehicle are improved.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
the embodiment of the application provides an integrated electric drive system, and a motor controller 3 for controlling a first disc motor 1 and a second disc motor 2 is arranged between the first disc motor 1 and the second disc motor 2, the first disc motor 1 and the second disc motor adopt an independent wire control mode, and the motor controller 3 is used for directly controlling the output of the first disc motor 1 and the output of the second disc motor 2, so that the traditional mechanical speed reducer is replaced. And two terminal surfaces of motor controller 3 are fixed mutually with first disc motor 1 and second disc motor 2 respectively, compact structure, first disc motor 1 and second disc motor 2 all are cylindrically, motor controller 3 is the disc type, and motor controller 3's external diameter is the same with first disc motor 1 and second disc motor 2's external diameter, motor controller 3, whole electrical control mechanism that first disc motor 1 and second disc motor 2 three are constituteed is a complete cylinder, the shape is regular, do benefit to chassis platformization, the research and development cycle of motorcycle type has been accelerated. And the whole integrated electric drive system is highly symmetrical and light in weight, and is beneficial to improving the operation efficiency and improving the vehicle control stability. Meanwhile, in the first power board 301 of the motor controller 3, the axes of the first capacitor 3012 and the at least two first modules 3011 are perpendicular to each other, so that the capability of the first power board 301 against electromagnetic interference is improved, and in the second power board 302 of the motor controller 3, the axes of the second capacitor 3022 and the at least two second modules 3021 are perpendicular to each other, so that the capability of the second power board 302 against electromagnetic interference is also improved, and thus the capability of the whole motor controller 3 against electromagnetic interference is finally improved. In addition, the motor controller 3, the first disc motor 1 and the second disc motor 2 share a set of complete cooling pipeline 5, so that the arrangement difficulty is reduced on the basis of ensuring the heat dissipation effect, and the cost is reduced.
The embodiment of the application also provides an electric automobile which comprises the integrated electric drive system provided in the embodiment.
In particular, for a front-wheel-drive vehicle type, the integrated electric drive system provided by the embodiment of the application can be arranged on a front axle.
For a rear wheel drive vehicle, the integrated electric drive system provided by the embodiment of the application can be arranged on a rear axle.
For the motorcycle type of four wheel drive, can set up the integrated electric drive system that this application embodiment provided respectively on the front and back axle, arrange the degree of difficulty and hang down, and the expansion ability is strong.
For example, if the peak power demand of the entire vehicle is 140kW and the wheel-side torque is 2400Nm (Nm), a first disc motor 1 with a peak power of 70kW and a torque of 1200Nm (Nm) and a second disc motor 2 with the same peak power of 70kW and a torque of 1200Nm (Nm) may be selected in the integrated electric drive system, and the integrated electric drive system is assembled on the front axle or the rear axle, so that the efficiency of the entire vehicle is improved with low arrangement difficulty.
In the present application, it is to be understood that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An integrated electric drive system, characterized in that the system comprises a first disc motor (1), a second disc motor (2) and a motor controller (3);
the motor controller (3) is arranged between the first disc motor (1) and the second disc motor (2), and two end faces of the motor controller (3) are respectively fixed with the first disc motor (1) and the second disc motor (2);
the motor controller (3) is electrically connected with the first disc motor (1) and the second disc motor (2), and the motor controller (3) is configured to control the first disc motor (1) and the second disc motor (2) and simultaneously provide power for the first disc motor (1) and the second disc motor (2);
the first disc motor (1) and the second disc motor (2) are both cylindrical, the motor controller (3) is disc-shaped, and the outer diameter of the motor controller (3) is the same as that of the first disc motor (1) and that of the second disc motor (2).
2. The system according to claim 1, characterized in that it further comprises a power battery (4);
the output end of the power battery (4) is electrically connected with the input end of the motor controller (3);
the power battery (4) is configured to deliver direct current to the motor controller (3).
3. The system according to claim 2, characterized in that the motor controller (3) comprises a first power board (301) and a second power board (302);
the first power board (301) is arranged on one side of the motor controller (3) close to the first disc motor (1);
the first power board (301) is configured to convert direct current received at an input of the motor controller (3) into alternating current suitable for use by the first disc motor (1);
the second power board (302) is provided on a side of the motor controller (3) close to the second disc motor (2);
the second power board (302) is configured to convert direct current received at an input of the motor controller (3) into alternating current suitable for use by the second disc motor (2).
4. A system according to claim 3, characterized in that at least two first modules (3011) and at least one first capacitor (3012) are arranged in the first power board (301);
at least two second modules (3021) and at least one second capacitor (3022) are arranged in the second power board (302);
the at least two first modules (3011) are arranged in parallel, the at least two first modules (3011) are connected with the first capacitor (3012), and the axes of the first capacitor (3012) and the at least two first modules (3011) are perpendicular to each other;
the at least two second modules (3021) are arranged in parallel, the at least two second modules (3021) are both connected with the second capacitor (3022), and the second capacitor (3022) and the at least two second modules (3021) have mutually perpendicular axes.
5. The system of claim 4, wherein the first module (3011) and the second module (3021) are insulated gate bipolar transistor modules, and the first capacitor (3012) and the second capacitor (3022) are thin film capacitors;
the first module (3011) and the second module (3021) are configured to convert direct current received at an input of the motor controller (3) into alternating current;
the first capacitor (3012) is configured to reduce ripple of direct current in the first power board (301), and the second capacitor (3022) is configured to reduce ripple of direct current in the second power board (302).
6. A system according to claim 3, characterized in that the motor controller (3) further comprises a main control board (303) arranged between the first power board (301) and the second power board (302);
the main control board (303) is electrically connected with the first power board (301) and the second power board (302);
the main control board (303) is configured to control outputs of the first power board (301) and the second power board (302).
7. The system according to claim 6, characterized in that it further comprises a cooling circuit (5);
the cooling pipeline (5) comprises a first electric control cooling pipeline (501), a second electric control cooling pipeline (502), a first motor cooling pipeline (503) and a second motor cooling pipeline (504);
the first electronically controlled cooling circuit (501) is disposed between the first power board (301) and the main control board (303);
the second electronically controlled cooling circuit (502) is disposed between the second power board (302) and the main control board (303);
the first motor cooling line (503) is configured to helically surround in a housing of the first disc motor (1);
the second motor cooling line (504) is configured to helically surround in a housing of the second disc motor (2).
8. The system of claim 7, wherein a water outlet of the first electronically controlled cooling circuit (501) is configured to communicate with a water inlet of the first motor cooling circuit (503);
the water outlet of the second electronically controlled cooling circuit (502) is configured to communicate with the water inlet of the second motor cooling circuit (504);
the water inlets of the first electrically controlled cooling pipeline (501) and the second electrically controlled cooling pipeline (502) are arranged on the shell of the motor controller (3);
the water outlets of the first motor cooling pipeline (503) and the second motor cooling pipeline (504) are respectively arranged at one ends of the shells of the first disc motor (1) and the second disc motor (2) far away from the motor controller (3).
9. The system according to claim 1, characterized in that said first disc motor (1) further comprises a first output shaft (101), said second disc motor (2) further comprises a second output shaft (201);
the first output shaft (101) and the second output shaft (201) are coaxial and face to the side far away from the motor controller (3);
the first output shaft (101) and the second output shaft (201) are configured to drive two wheels on opposite sides of each other, respectively.
10. An electric vehicle, characterized in that it comprises an integrated electric drive system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011575264.1A CN112677749A (en) | 2020-12-28 | 2020-12-28 | Integrated electric drive system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011575264.1A CN112677749A (en) | 2020-12-28 | 2020-12-28 | Integrated electric drive system and electric automobile |
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| CN112677749A true CN112677749A (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011575264.1A Pending CN112677749A (en) | 2020-12-28 | 2020-12-28 | Integrated electric drive system and electric automobile |
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| CN (1) | CN112677749A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103828199A (en) * | 2011-09-29 | 2014-05-28 | 株式会社安川电机 | Motor drive device and vehicle |
| CN203086389U (en) * | 2013-01-18 | 2013-07-24 | 上海大郡动力控制技术有限公司 | Capacitor connection structure of vehicle-mounted dual-motor controller |
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