CN110154723B - Combinable double-motor driving module of pure electric vehicle - Google Patents
Combinable double-motor driving module of pure electric vehicle Download PDFInfo
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- CN110154723B CN110154723B CN201910473902.XA CN201910473902A CN110154723B CN 110154723 B CN110154723 B CN 110154723B CN 201910473902 A CN201910473902 A CN 201910473902A CN 110154723 B CN110154723 B CN 110154723B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A combinable double-motor driving module of a pure electric vehicle consists of a main driving motor, a secondary driving motor, a clutch and a linear motor; the turning angle signal of the steering wheel, the rotating speeds and the torque signals of the two wheels are used as control signals of the linear motor, and the linear motor controls the connection and disconnection of the clutch to realize the connection and disconnection between the main rotor 18 of the main driving motor and the secondary rotor 14 of the secondary driving motor; the primary drive motor and the secondary drive motor operate independently when the clutch is disengaged and operate synchronously when the clutch is engaged. The primary drive motor and the secondary drive motor are both in the form of alternating-current permanent magnet motors, and can be used as motors and generators. The switching of the functions of the engine and the motor of the main driving motor and the secondary driving motor is realized through the on-off of the power lines of the main driving motor and the secondary driving motor, the vehicle-mounted power supply and the power line of the storage battery. The device has the advantages of compact structure, high precision, quick response, large acceleration, small torque fluctuation, high overload capacity, high working efficiency and the like.
Description
Technical Field
The invention belongs to the technical field of automobile engineering, and relates to a combinable double-motor driving module of a pure electric vehicle, which is used for realizing stable and rapid starting of the pure electric vehicle and charging a storage battery.
Background
At present, under the condition that hybrid electric vehicles and pure electric vehicles are continuously developed, the requirements on the cold start performance and the rapid acceleration performance of a motor are also continuously improved, and particularly, the requirements on the acceleration performance and the braking energy recovery of the vehicles are also continuously improved. The traditional electric vehicle always considers the electric quantity of the energy storage battery, increases the driving range of the vehicle by increasing the battery capacity, and the single motor driving mode is greatly restricted in the aspects of energy conservation and braking energy recovery.
The double-stator motor refers to a motor which is provided with a rotor and two stators, thereby forming a combination of two single motors. When the two single motors are used as motors, electromagnetic torque generated by active currents of coils on stators of the two single motors jointly acts on a rotor to output mechanical work; when the two single motors are both permanent magnet motors and are used as generators, the stators of the two single motors simultaneously generate induced voltages to output induced currents to the power supply to charge the battery, so that the battery can be charged rapidly; when the two permanent magnet single motor stators are powered in a time sharing way, the effect that the two single motors are driven by the single motor or one motor is driven and the other motor generates power can be achieved. The motor has the advantages of high precision, quick response, large acceleration, small torque fluctuation, high overload capacity and the like; on the other hand, the research of double-stator motors inevitably involves new problems in terms of some motors, and forms a research direction of different systems.
The structure of the existing double-stator motor can realize time-sharing work and combined work of two single motors, but cannot meet the requirements of cold starting performance, acceleration performance, braking energy recovery and the like of the motor for the electric vehicle, and cannot realize the associated operation of the two single motors according to the using conditions of the electric vehicle, so that the structure is extremely unfavorable for the application and popularization of the double-stator motor in the driving of the pure electric vehicle.
Therefore, the invention discloses a novel combined double-motor driving module of a pure electric vehicle, which is used for driving the electric vehicle which meets the use performance requirements of different driving working conditions, and realizes the double effects of energy-saving driving and braking energy recovery.
Disclosure of Invention
The technical scheme adopted by the combinable double-motor driving module of the pure electric vehicle is as follows:
the motor comprises a motor front end cover 1, a motor shell 2, a motor rear end cover 11, a main driving motor, a secondary driving motor, a clutch and a linear motor; the motor front end cover 1 and the motor rear end cover 11 are respectively arranged at two ends of the motor housing 2, the main stator 3 and the secondary stator 10 are respectively fixedly connected with the inner walls of the motor housing 2 at two sides of the clutch housing 5, and the clutch housing 5 is fixedly connected with the inner walls of the motor housing 2;
the main driving motor comprises a main stator 3, a main rotor 18 and a main rotating shaft 23; the main stator 3 is fixedly connected to the inner wall of the motor housing 2 at one side of the clutch housing 5, the main rotor 18 is coaxially connected with the main rotating shaft 23, and the main stator 3, the main rotor 18 and the main rotating shaft 23 are coaxially arranged;
the secondary driving motor comprises a secondary stator 10, a secondary rotor 14 and a secondary rotating shaft 22; the secondary rotor 14 is coaxially connected with the secondary rotating shaft 22; the secondary stator 10, the secondary rotor 14 and the secondary rotating shaft 22 are coaxially arranged, and the primary rotating shaft 23 and the secondary rotating shaft 22 are on the same axis; the main rotor 18 and the secondary rotor 14 are arranged at a special phase angle, and the secondary rotating shaft 22 is connected with the motor rear end cover 11 and the clutch housing 5 through a bearing;
the clutch comprises a clutch housing 5, a spline hub 6, a meshing sleeve 7, a shaft end baffle 16 and a sliding key 26; the spline hub 6 is fixedly connected to the stepped shaft end of the main rotating shaft 23, and the main rotating shaft 23 is respectively connected with the front end cover 1 of the motor and the clutch housing 5 through bearings; the shaft end baffle disc 16 is coaxially and fixedly connected to the stepped shaft end of the secondary rotating shaft 22, the meshing sleeve 7 is coaxially connected with the secondary rotating shaft 22 through a sliding key 26, the front end of the meshing sleeve 7 is provided with a meshing groove which can be meshed with the spline hub 6, a key slot is formed in the meshing sleeve 7 and can be meshed with the sliding key 26, and the meshing sleeve 7 is fixedly connected with the linear motor rotor 9;
the linear motor comprises a linear motor stator 8 and a linear motor rotor 9; the linear motor rotor 9 is coaxially fixed at the tail end of the meshing sleeve 7, the linear motor stator 8 is arranged on the inner wall of the clutch housing 5, and the meshing sleeve 7, the linear motor stator 8 and the linear motor rotor 9 are coaxially connected with the secondary rotating shaft 22;
the linear motor stator 8 comprises a linear motor stator winding 8-1, a linear motor stator tooth ring 8-2 and a linear motor stator core sleeve 8-3; the linear motor stator toothed ring 8-2 is coaxially and fixedly connected to the inner wall of the linear motor stator core sleeve 8-3, and the linear motor stator winding 8-1 is wound between the intervals of the linear motor stator toothed ring 8-2;
the linear motor rotor 9 comprises linear motor rotor magnetic steel 9-1 and a linear motor rotor iron core 9-2; the linear motor rotor magnetic steel 9-1 and the linear motor rotor iron core 9-2 are alternately overlapped and combined to form the linear motor rotor 9.
The beneficial effects of the invention are as follows: a combinable double-motor driving module of a pure electric vehicle adopts a linear motor to operate a clutch to realize synchronous or independent work of two alternating-current permanent magnet motors respectively connected with two driving wheels; the function switching of the motor and the generator is realized through the power connection combination of a vehicle-mounted power supply, a storage battery and two alternating-current permanent magnet motors; the clutch is separated according to the rotation angle signal of the steering wheel of the vehicle and the signals such as the rotating speed and the torque of the two wheels, so that the differential speed of the two alternating current permanent magnet motors is realized, the clutch can be separated according to the electric quantity signal and the speed signal of the vehicle, and the driving of the single alternating current permanent magnet motor and the other power generation effect are realized. The device has the advantages of compact structure, high precision, quick response, large acceleration, small torque fluctuation, high overload capacity, high working efficiency and the like, can greatly reduce the volume and the weight of the electric vehicle, and improves the control precision and the dynamic performance of the electric vehicle.
Drawings
Fig. 1 is a block diagram of a combinable dual-motor driving module of a pure electric vehicle.
Fig. 2 is a clutch structure diagram of a combinable dual-motor driving module of a pure electric vehicle.
Description of the embodiments
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 1 and 2, a combinable dual-motor driving module of a pure electric vehicle comprises a motor front end cover 1, a motor housing 2, a motor rear end cover 11, a main driving motor, a secondary driving motor, a clutch and a linear motor; the motor front cover 1 and the motor rear cover 11 are respectively arranged at two ends of the motor housing 2, the main stator 3 and the secondary stator 10 are respectively fixedly connected with the inner walls of the motor housing 2 at two sides of the clutch housing 5, and the clutch housing 5 is fixedly connected with the inner walls of the motor housing 2.
The main drive motor is of the type of an alternating current permanent magnet motor and comprises a main stator 3, a main rotor 18 and a main rotating shaft 23; the main stator 3 is fixedly connected to the inner wall of the motor housing 2 at one side of the clutch housing 5, the main stator 3, the main rotor 18 and the main rotating shaft 23 are coaxially arranged, the main rotor 18 is coaxially connected with the main rotating shaft 23, and the other end of the main rotating shaft 23 is connected with a driving wheel.
The secondary drive motor is also of the type of an ac permanent magnet motor comprising a secondary stator 10, a secondary rotor 14, a secondary shaft 22; the secondary rotor 14 is coaxially connected with the secondary rotating shaft 22; the secondary stator 10, the secondary rotor 14 and the secondary rotating shaft 22 are coaxially arranged, and the primary rotating shaft 23 and the secondary rotating shaft 22 are on the same axis; the main rotor 18 and the sub rotor 14 are installed at a specific phase angle, and the sub shaft 22 is connected with the motor rear end cover 11 and the clutch housing 5 through bearings.
The clutch adopts a clutch mode of straight tooth engagement and slip disengagement and comprises a clutch housing 5, a spline hub 6, a meshing sleeve 7, a shaft end baffle 16 and a slip key 26; the spline hub 6 is fixedly connected to the stepped shaft end of the main rotating shaft 23, and the main rotating shaft 23 is respectively connected with the front end cover 1 of the motor and the clutch housing 5 through bearings; the shaft end baffle disc 16 is coaxially and fixedly connected to the stepped shaft end of the secondary rotating shaft 22, the meshing sleeve 7 is coaxially connected with the secondary rotating shaft 22 through a sliding key 26, the front end of the meshing sleeve 7 is provided with a meshing groove which can be meshed with the spline hub 6, a key slot is formed in the meshing sleeve 7 and can be meshed with the sliding key 26, and the linear motor is fixedly connected with the meshing sleeve 7.
The linear motor is used for operating the clutch to realize the connection and disconnection between the main rotor 18 of the main drive motor and the secondary rotor 14 of the secondary drive motor; the motor comprises a linear motor stator 8 and a linear motor rotor 9; the linear motor rotor 9 is coaxially fixed at the tail end of the meshing sleeve 7, the linear motor stator 8 is mounted on the inner wall of the clutch housing 5, and the meshing sleeve 7, the linear motor stator 8 and the linear motor rotor 9 are coaxially connected with the secondary rotating shaft 22.
The linear motor stator 8 comprises a linear motor stator winding 8-1, a linear motor stator tooth ring 8-2 and a linear motor stator core sleeve 8-3; the linear motor stator toothed ring 8-2 is coaxially and fixedly connected to the inner wall of the linear motor stator core sleeve 8-3, and the linear motor stator winding 8-1 is wound between the intervals of the linear motor stator toothed ring 8-2.
The linear motor rotor 9 comprises linear motor rotor magnetic steel 9-1 and a linear motor rotor iron core 9-2; the linear motor rotor magnetic steel 9-1 and the linear motor rotor iron core 9-2 are alternately overlapped and combined to form the linear motor rotor 9.
The working process of the invention comprises the following steps:
when the linear motor is started, the clutch is in an engaged state, the spline hub 6 is meshed with the meshing sleeve 7, and synchronous rotation of the main rotor 18 and the secondary rotor 14 is realized; the linear motor is started again, so that the clutch is in a disengaged state, the spline hub 6 is disconnected from the meshing sleeve 7, and the main rotor 18 and the secondary rotor 14 work independently.
When the power lines of the main driving motor and the secondary driving motor are respectively connected through the vehicle-mounted power lines, the vehicle-mounted power supply supplies power, and the main driving motor and the secondary driving motor can be used as motors for power output; when the power lines of the main driving motor and the secondary driving motor are respectively connected with the power line of the storage battery, the main driving motor and the secondary driving motor can be used as a generator to recover braking energy.
When the linear motor is started to enable the clutch to be engaged, power is supplied to the main drive motor and the secondary drive motor, and the main rotor 18 and the secondary rotor 14 synchronously rotate to output double torque; when the main driving motor and the secondary driving motor are not powered and are used as generators, the wheels drive the main rotating shaft 23 and the secondary rotating shaft 22 to rotate, so that the main rotor 18 and the secondary rotor 14 are driven to rotate for generating electricity, and double electric quantity of the storage battery is charged.
When the rotation angle signal of the steering wheel of the vehicle, the rotation speed and torque signals of two wheels or the electric quantity signal and the speed signal of the vehicle are received, the linear motor is started after receiving the signals, the linear motor rotor 9 drives the meshing sleeve 7 to be separated from the spline hub 6, the differential speed between the main driving motor and the secondary driving motor can be realized, or one of the main driving motor and the secondary driving motor is driven, and the other is used as a generator for generating electricity.
The working principle of the invention is as follows:
a combinable double-motor driving module of a pure electric vehicle adopts the cooperative cooperation of double stators and double rotors to form a plurality of driving modes of combined or independent work of double motors and a braking energy recovery mode of combined or independent power generation of the double motors. The turning angle signal of the steering wheel, the rotating speeds and the torque signals of the two wheels are used as control signals of the linear motor, and the linear motor controls the connection and disconnection of the clutch to realize the connection and disconnection between the main rotor 18 of the main driving motor and the secondary rotor 14 of the secondary driving motor; thereby realizing the joint or independent work of the main driving motor and the secondary driving motor. The primary drive motor and the secondary drive motor are both in the form of alternating-current permanent magnet motors, and can be used as motors and generators. The switching of the functions of the engine and the motor of the main driving motor and the secondary driving motor is realized by the on-off of the power lines of the main driving motor and the secondary driving motor, the vehicle-mounted power supply and the power line of the storage battery, and the switching process is realized by adopting a relay and a switch circuit.
Claims (1)
1. A can make up two motor drive module of pure electric vehicles, its characterized in that: the motor comprises a motor front end cover (1), a motor shell (2), a motor rear end cover (11), a main driving motor, a secondary driving motor, a clutch and a linear motor; the motor front end cover (1) and the motor rear end cover (11) are respectively arranged at two ends of the motor shell (2), the main stator (3) and the secondary stator (10) are respectively fixedly connected with the inner walls of the motor shell (2) at two sides of the clutch shell (5), and the clutch shell (5) is fixedly connected with the inner walls of the motor shell (2);
the main driving motor comprises a main stator (3), a main rotor (18) and a main rotating shaft (23); the main stator (3) is fixedly connected to the inner wall of the motor housing (2) at one side of the clutch housing (5), the main rotor (18) is coaxially connected with the main rotating shaft (23), and the main stator (3), the main rotor (18) and the main rotating shaft (23) are coaxially arranged;
the secondary driving motor comprises a secondary stator (10), a secondary rotor (14) and a secondary rotating shaft (22); the secondary rotor (14) is coaxially connected with the secondary rotating shaft (22); the secondary stator (10), the secondary rotor (14) and the secondary rotating shaft (22) are coaxially arranged, and the primary rotating shaft (23) and the secondary rotating shaft (22) are on the same axis; the main rotor (18) and the secondary rotor (14) are arranged at a fixed phase angle, and the secondary rotating shaft (22) is connected with the motor rear end cover (11) and the clutch housing (5) through bearings;
the clutch comprises a clutch shell (5), a spline hub (6), a meshing sleeve (7), a shaft end baffle disc (16) and a sliding key (26); the spline hub (6) is fixedly connected to the stepped shaft end of the main rotating shaft (23), and the main rotating shaft (23) is respectively connected with the front end cover (1) of the motor and the clutch housing (5) through bearings; the shaft end baffle disc (16) is coaxially and fixedly connected to the stepped shaft end of the secondary rotating shaft (22), the meshing sleeve (7) is coaxially connected with the secondary rotating shaft (22) through a sliding key (26), the front end of the meshing sleeve (7) is provided with a meshing groove which can be meshed with the spline hub (6), a key slot is formed in the meshing sleeve (7) and can be meshed with the sliding key (26), and the meshing sleeve (7) is fixedly connected with the linear motor rotor (9);
the linear motor comprises a linear motor stator (8) and a linear motor rotor (9); the linear motor rotor (9) is coaxially fixed at the tail end of the meshing sleeve (7), the linear motor stator (8) is arranged on the inner wall of the clutch housing (5), and the meshing sleeve (7), the linear motor stator (8) and the linear motor rotor (9) are coaxially connected with the secondary rotating shaft (22);
the linear motor stator (8) comprises a linear motor stator winding (8-1), a linear motor stator tooth ring (8-2) and a linear motor stator core sleeve (8-3); the linear motor stator toothed ring (8-2) is coaxially and fixedly connected to the inner wall of the linear motor stator core sleeve (8-3), and the linear motor stator winding (8-1) is wound between the intervals of the linear motor stator toothed ring (8-2);
the linear motor rotor (9) comprises linear motor rotor magnetic steel (9-1) and a linear motor rotor iron core (9-2); the linear motor rotor magnetic steel (9-1) and the linear motor rotor iron core (9-2) are alternately overlapped and combined to form the linear motor rotor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473902.XA CN110154723B (en) | 2019-06-02 | 2019-06-02 | Combinable double-motor driving module of pure electric vehicle |
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| CN201910473902.XA CN110154723B (en) | 2019-06-02 | 2019-06-02 | Combinable double-motor driving module of pure electric vehicle |
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| CN110154723A CN110154723A (en) | 2019-08-23 |
| CN110154723B true CN110154723B (en) | 2023-11-21 |
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| US11198359B2 (en) | 2019-12-16 | 2021-12-14 | Schaeffler Technologies AG & Co. KG | Dual motor coaxial e-axle with rotor shaft locking mechanism |
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