CN215072089U - Multilayer motor and control system thereof - Google Patents

Abstract

The utility model discloses a multilayer motor and control system thereof, the multilayer motor includes L electrical unit, and every electrical unit includes stator unit and rotor unit, L electrical unit's stator unit is along the range-upon-range of axial and fixed together, and L electrical unit's rotor unit is arranged and is fixed in the pivot along the axial layer, and the pivot is passed from electrical unit's centre, drives rotor unit through the pivot and rotates, and every stator unit includes m group's coil, has n group's phase place in every group coil, and every electrical unit all has m x n group's excitation coil and a set of rotor unit that corresponds, wherein L, m and n are for being greater than 1 natural number, electrical unit is for no tooth torque in a wretched state or no magnetism card torque electrical unit. The utility model provides a current motor control system can not individualized driving motor operation, be difficult to carry out the problem of electric power recovery.

Description

Multilayer motor and control system thereof

Technical Field

The utility model relates to a motor control technology field, concretely relates to multilayer motor and control system thereof.

Background

At present, electric vehicles develop rapidly, new requirements are provided for motors and control systems thereof, the output of the motors can be better controlled to meet the requirements of the electric vehicles, particularly the vehicles powered by mobile power supplies under various working conditions, the energy is saved more to improve the efficiency and the cruising ability of the vehicles, and the rapid recovery of power is required under some conditions. There is therefore a need to develop electric machines and corresponding control and power supply systems that are more suitable for use in electric vehicles.

The traditional motor is only provided with one set of coil, the connection of the coil in the motor cannot be changed after the motor is produced, and the resistance value of the coil in the motor cannot be changed. When electric vehicles are not widely used, most of the motors provide power for industrial machinery, and the maximum efficiency output of the motors is set to a specific torque and a specific rotating speed, so that the machinery can stably and efficiently operate. When the electric vehicle is operated, the torque and the rotational speed are changed according to the driving conditions, and thus the output of the motor deviates from the torque and rotational speed setting for the maximum efficiency. When the vehicle is started and accelerated, the motor needs to output strong torque, when the vehicle continues to navigate at high speed, the motor only needs to maintain relatively high rotating speed to reduce the output torque, and under the condition, the general motor can be set to output large torque so that the motor cannot be burnt out due to overheating. However, when the torque is reduced, the motor cannot change the resistance of the inner coil, and at high rotation speed, the motor needs to maintain the voltage in the coil, and consumes considerable power, so that the conventional electric vehicle cannot save power when running at high speed.

On the other hand, since the motor generally used in the electric vehicle always consumes a considerable voltage and current during operation, when the vehicle brakes, the running motor is difficult to be quickly converted into a generator, and since the motor generally used in the electric vehicle usually uses a thick coil or multiple coils to reduce resistance and pass a large current to provide a larger power, such a configuration cannot effectively recover the power and convert it into electric energy.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a multilayer motor and control system thereof to solve current motor control system can not individualized driving motor operation, be difficult to carry out the problem of electric power recovery.

In order to achieve the above object, the present invention provides the following technical solutions:

according to the utility model discloses a first aspect, a multilayer motor is disclosed, multilayer motor includes L electrical unit, and every electrical unit includes stator unit and rotor unit, L electrical unit's stator unit is along the range upon range of axial and fix together, and L electrical unit's rotor unit is along the range of axial layer and fix in the pivot, and the pivot is passed from electrical unit's centre, drives rotor unit through the pivot and rotates, and every stator unit includes m group's coil, has n group's phase place in every group coil, and every electrical unit all has mxn group's excitation coil and a set of rotor unit that corresponds, wherein L, m and n are for being greater than 1 natural number, electrical unit is for no tooth's socket torque or no magnetic card torque electrical unit.

Further, the motor units are coreless permanent magnet motor units or non-permanent magnet induction motor units, the multi-layer motor can be matched with one or more motor units without tooth-groove torque under different application conditions, the number and the phase of the magnet exciting coils of the stator units are the same as those of the magnet exciting coils of other stator units, the positions of the magnet exciting coils of the stator units are the same, the rotor units are fixed on the same rotating shaft, and the number and the positions of the magnetic poles or induction magnetic poles on the rotor unit of each motor unit are the same as those of the other rotor units.

Further, the stator unit includes: the permanent magnet motor without the iron core comprises a stator unit and a non-permanent magnet induction motor unit, wherein the stator unit and the non-permanent magnet induction motor unit are arranged and fixed in an axial stacking manner, and the rotor unit comprises: the permanent magnet motor comprises a coreless permanent magnet motor rotor unit and a non-permanent magnet induction motor unit, wherein the coreless permanent magnet motor rotor unit and the non-permanent magnet induction motor unit are arranged in an axial stacking mode and are fixed on a rotating shaft.

According to the utility model discloses a second aspect discloses a control system of multilayer motor, control system includes: the motor unit comprises a main control computer, wherein the main control computer is connected with a plurality of motor drivers, each motor driver is connected with one motor unit, the motor drivers are controlled by the main control computer, and the motor drivers control the correspondingly connected motor units.

Further, the motor driver detects and calculates the phase of the stator unit in each motor unit and the relative position between the magnetic poles in the rotor unit through the Hall detection element coaxially connected with the motor unit and the back electromotive force of the motor unit.

Furthermore, the motor driver induces the magnetic poles and the steering deflection angle of the rotor of the motor unit connected with the motor driver through the Hall detection element, calculates the corresponding phase position when the rotor unit generates the most effective torque, supplies power to the m excitation coil groups in the same phase, and shares the sensed and calculated information with the main control computer and the motor drivers of other motor units in the multi-layer motor.

Furthermore, the main control computer can adjust the number of the motor units to be turned on and turned off according to the requirements of load torque and rotating speed, when the multilayer motor drives the load to be started or the rotating speed is increased, namely the output torque is increased, the main system computer can instruct a proper number of motor units or a whole number of motor units to work, and when the multilayer motor reaches the required rotating speed, the main system computer can control part of the motor units to enter the dormancy state, and the sufficient number of the motor units are left to work to maintain the required torque and rotating speed.

Further, when the main control computer detects that the motor unit decelerates, the motor unit in the dormant state is adjusted to be a generator through the motor driver, electric energy recovery is carried out, when the main control computer detects that the motor unit stops, all the motor units are converted into generators through the motor driver, electric energy recovery is carried out, and braking and stopping actions are assisted.

Further, the main control calculator instructs the motor units to work and sleep in turn according to the states of the motor units, the working temperature and other data.

Further, the main control calculator divides the output power of the multi-layer motor into L levels from low to high, and controls the L motor drivers according to the levels of the output power so that the multi-layer motor outputs power in a mode of the highest efficiency.

Furthermore, when the motor unit of the motor driver is set to be dormant, the counter electromotive force generated by the motor unit is grounded to the battery through the freewheeling diode in the insulated gate bipolar transistor or the metal oxide semiconductor field effect transistor in the driver, so that the rotor in the motor unit in the dormant state is not influenced by the acting force of the counter electromotive force of the stator, and the whole rotating speed of the motor is reduced.

Further, the control system also comprises a main power supply management computer, wherein the main power supply management computer is connected with a main battery pack, the main battery pack is connected with a battery column, the battery column comprises a plurality of slave battery packs, and each slave battery pack is connected with one motor unit.

Further, the slave battery pack is connected with a common quick charging unit, the common quick charging unit is connected with the master battery pack, and when the slave battery pack is insufficient in electric quantity, the slave battery pack is charged through the common quick charging unit.

Furthermore, the main battery pack is also connected with a high-power quick charging unit, and the high-power quick charging unit and the common quick charging unit operate independently and do not interfere with each other.

Further, the master power management computer controls the slave battery packs to supplement the electric quantity according to the residual electric quantity of the slave battery packs and the sequence.

The utility model has the advantages of as follows:

the utility model discloses a multilayer motor and a control system thereof, wherein the multilayer motor comprises motor units, each motor unit comprises a plurality of stator discs, and each stator disc is provided with n groups of m-phase excitation rings; each layer of motor unit is provided with an independent driver and a power supply system, so that the utility model discloses a multilayer motor can be controlled more flexibly with the vehicle having the multilayer motor and the control and power supply system thereof embodies the multilayer motor system under different driving conditions and the application of controlling the torque and the rotating speed output thereof in a motor unit starting and dormancy mode to the highest efficiency is reached. Realizing personalized control. Furthermore, the molding of the motor unit via the hibernation allows for a timely recovery of energy during braking of the vehicle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural diagram of a multilayer motor provided by an embodiment of the present invention

Fig. 2 is a schematic diagram of the positions of the stator magnetic poles and the rotor of the multilayer motor according to the embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a control connection of a main control computer of a multi-layer motor control system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a main power management computer control connection of a multi-layer motor control system according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an operation of an acceleration motor unit of a multi-layer motor according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating a motor unit sleep operation of a uniform-speed traveling part of a multi-layer motor according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the operation of the motor unit in a decelerating state of the multi-layer motor according to the embodiment of the present invention;

fig. 8 is a schematic working diagram of a motor unit in a brake-off state of a multi-layer motor according to an embodiment of the present invention;

fig. 9 is a schematic diagram of efficiency when a different number of motor units are used in a multi-layer motor according to an embodiment of the present invention.

In the figure: 1-motor unit, 2-stator unit, 3-rotor unit, 4-rotating shaft, 5-main control computer, 6-motor driver, 7-Hall detection element, 8-main power supply management computer, 9-main battery pack, 10-auxiliary battery pack, 11-common quick charging unit, 12-high power quick charging unit and 13-main power supply management computer.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The present embodiment discloses a multilayer electric machine, and the following detailed description of the embodiments of the multilayer electric machine of the present invention, its control and power supply system, and a vehicle having the same, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. In the description of the multi-layer motor and the system thereof of the present invention, it should be understood that the terms "front", "back", "upper", "lower", "upper end", "lower end", "upper part", "lower part", etc. indicate the manner or positional relationship based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or assembly referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the multi-layer motor in the embodiment is coaxially combined into a power output point, which is only for convenience of describing the invention and simplifying the description, but does not indicate or imply that the motor in question must be coaxially combined into a power output point.

The multilayer motor includes L electrical unit 1, and every electrical unit 1 includes stator unit 2 and rotor unit 3, stator unit 2 of L electrical unit 1 is in the same place along the range upon range of axial, and L electrical unit 1's rotor unit 3 is arranged and is fixed on pivot 4 along the axial layer, and pivot 4 passes from electrical unit 1's centre, drives rotor unit 3 through pivot 4 and rotates, and every stator unit 2 includes m group's coils, has n group's phase place in every group coil, and every electrical unit 1 all has mxn group's excitation coil and a set of rotor unit 3 that corresponds, and wherein L, m and n are for being greater than 1 natural number, electrical unit 1 is for no tooth's socket torque or no magnetism card torque electrical unit 1.

The motor units 1 are coreless permanent magnet motor units 1 or non-permanent magnet induction motor units 1, in different application situations, a multi-layer motor can be matched with one or more motor units 1 without tooth-space torque, the number and the phase of the magnet exciting coils of the stator units 2 are the same as those of the magnet exciting coils of other stator units 2, the positions of the magnet exciting coils are the same, the rotor units 3 are fixed on the same rotating shaft 4, and the number and the positions of the magnetic poles or induction magnetic poles on the rotor unit 3 of each motor unit 1 are the same as those of the other rotor units 3. The stator unit 2 includes: the permanent magnet motor comprises a coreless permanent magnet motor stator unit 2 and a non-permanent magnet induction motor unit 1, wherein the coreless permanent magnet motor stator unit 2 and the non-permanent magnet induction motor unit 1 are arranged and fixed in an axial stacking mode, and the rotor unit 3 comprises: the permanent magnet motor comprises a coreless permanent magnet motor rotor unit 3 and a non-permanent magnet induction motor unit 1, wherein the coreless permanent magnet motor rotor unit 3 and the non-permanent magnet induction motor unit 1 are arranged in an axial stacking mode and are fixed on a rotating shaft 4.

In the present exemplary embodiment, L motor units 1 are connected via a rotary shaft 4, wherein the rotor unit 3 is located between the stator units 2. The rotor unit 3 rotates in synchronism with the rotor shaft. The L motor units 1 have the same number of field coils and the same phase position. The corresponding poles and directions of the rotors of the middle L motor units 1 are the same. Because the utility model discloses a multilayer motor includes a plurality of motor element 1, every motor element 1's stator, all can independently drive make the utility model discloses a multilayer motor can be controlled in a flexible way and the needs that satisfy various operating modes are installed.

Example 2

Referring to fig. 1 and 2, in the present embodiment, a control system of a multi-layer motor is disclosed, a main control computer 5 is connected to a plurality of motor drivers 6, each motor driver 6 is connected to one motor unit 1, the motor drivers 6 are controlled by the main control computer 5, and the motor drivers 6 control the correspondingly connected motor units 1. The motor driver 6 detects and calculates the phase of the stator unit 2 in each motor unit 1 and the relative position between the poles in the rotor unit 3 through the hall detection element 7 coaxially connected to the motor unit 1 and the back electromotive force of the motor unit 1. The motor drivers 6 sense the magnetic poles and the steering deflection angles of the rotors of the motor units 1 connected with the motor drivers 6 through the Hall detection elements 7, calculate the corresponding phases when the rotor units 3 generate the most effective torques, supply power to m excitation coil groups in the same phase, and each motor driver 6 can share the sensed and calculated information to the main control computer 5 and the motor drivers 6 of other motor units 1 in the multi-layer motor.

Referring to fig. 3, each motor driver 6 corresponds to one motor unit 1 and is connected to the corresponding motor unit 1, and the main control calculator sends a control command to each driver. Each motor driver 6 controls the motor unit 1 connected thereto according to a control instruction of the main control calculator. The motor driver 6 can accurately calculate the relative position between the stator phase and the magnetic pole through the hall detection element 7 coaxial with the multi-layer motor unit 1 and the back electromotive force sensing of each motor unit 1. The motor unit 1 in the dormancy is subjected to instantaneous frequency alignment, and participates in work to provide required torque. The motor driver 6 simultaneously shares the sensed and calculated data with the main control computer 5, the main control computer 5 will adjust the state of each motor unit 1, and the output requirement of the overall multi-layer motor will adjust the control instructions to each driver to control the operation of the motor units 1.

The mode of operation of the motor unit 1 includes:

1. more electric power is consumed to drive all the motor units 1 to operate, so that the motor units 1 provide high rotating speed and strong torque;

2. consuming less electric power, enabling a part of motors to provide basic power, rotating speed and torque when the motors enter a cruise uniform-speed running stage, enabling the rest motor units 1 to enter a dormant state without consuming electric power, detecting various parameters of the motor units 1, and waiting for power supply or electric energy recovery;

3. and recovering electric power, decelerating the motor, converting the motor unit 1 in a dormant state into a generator to recover the electric power, and converting all the motor units 1 into the generators to recover the electric power when the motor is stopped. The main control computer of the control system can make a part of the motor units 1 in a dormant state according to the mechanical torque output requirement, and only one motor unit 1 can provide the required rotating speed and torque. The main control calculator can calculate and use the first mode, the second mode or the third mode to control the multilayer motor according to the integral rotating speed of the multilayer motor and the working temperature. When different driving modes are used, the used electric quantity is different, so that the energy loss can be effectively reduced. Adjusting the total output of the motor in this way does not allow for a change in the internal resistance value, unlike conventional motors that only allow for a change in voltage and current adjustment, so that the operating efficiency of the motor unit 1 can be maintained at a high level instead of reducing the motor output to accommodate power and torque requirements.

Referring to fig. 5, in the first operation mode of the motor units 1, the main control computer 5 controls all the motor units 1 to enter a working state, so as to provide more torque and higher rotation speed to meet the application requirement, and the power system supplies power to all the motor units 1, so that all the motor units 1 operate at full power.

Referring to fig. 6, in the second mode of operation of the motor unit 1, the maximum efficiency output of the conventional motor when powering an industrial machine is set at a specific torque and rotational speed which must be varied according to the driving situation when powering a vehicle. When the vehicle reaches a stable cruising speed, the motor only needs to provide less force to counteract the wind resistance and the resistance to tire rotation to maintain the cruising speed, the main control computer 5 can instruct enough motor unit 1 to continue to work so as to provide enough cruising power, and the rest of the motor unit 1 which does not need to work temporarily sleeps so as to keep the energy consumption low. The main control computer 5 will take turns using each motor unit 1 to bring the operating temperature of the motor unit 1 to a reasonable level. The total motor management initiation of the first set of motor units 1 when the output power of the motor unit or the set of motor units 1 has met the application needs and the increase in the operating temperature at a time when the first set of motor units 1 is operated. When the first set of operating temperatures reaches the upper limit, the control computer switches the first motor unit 1 to the sleep state and switches the second set of motor units 1 from the sleep state to the operating state. Likewise, if the operating temperature of the second group motor unit 1 reaches the upper limit, the main control calculator switches the second group motor unit 1 to the sleep state and switches the third group motor unit 1 from the sleep state to the operating state. And so on, continuously circulating.

In the third mode of operation of the motor unit 1, with reference to fig. 7, when the vehicle is decelerating, the main control computer 5 controls the dormant motor unit 1 to be rapidly switched to a generator; referring to fig. 8, when the vehicle is stopped, all the motor units 1 are converted into generators, maximizing the energy recovery capability and efficiency.

The main control computer 5 of the control system will put some of the motor units 1 in a stand-by state in accordance with the mechanical torque output request. Only a part of the motor unit 1 will provide the required speed and torque. The motor unit 1 providing the rotating speed and the torque can select the first mode or the second mode to control the multilayer motor according to the existing rotating speed and the working temperature of the motor. When different driving modes are used, the used electric quantity is different, so that the energy loss can be effectively reduced. The total output of the motor is adjusted in this way, unlike the conventional motor which can only change the voltage and current, so that the operation efficiency of the motor unit 1 can be maintained at a high level, rather than reducing the output of the motor to meet the power and torque requirements.

Control of the multi-layer motor, in addition to current and voltage control, allows another means of controlling the output power. The main control computer 5 divides the output power of the motor unit 1 from low to high into L levels, and correspondingly, 1 to L motor units 1 are switched from a sleep state to a power supply state. As shown in the motor efficiency overlay of fig. 9, the regulation of current and voltage by the motor unit 1 may not require output as a primary decision factor, and more efficient operation conditions may be selected, despite high and low output, to provide maximum efficiency output. The more the motor unit 1 is used, the greater the range of options for 94% efficiency manipulation.

Under the condition of many practical applications, the output power of the whole motor is only 20% -30% when the motor runs for a long time. With a multi-layer motor and its control system, a small number of motor units 1 are already able to cope with this low output power. The main control computer 5 will use each motor unit 1 in turn to keep the operating temperature of the motor units 1 at a reasonable level. If the output power of one motor unit 1 unit has met the application requirements, the total motor management turns on the first motor unit 1. After a period of time when the first motor unit 1 is operated, the operating temperature rises. When the working temperature of the first layer reaches the set level, the main control computer 5 will switch the first motor unit 1 to the ready state and switch the m/2+1 motor unit 1 from the ready state to the power supply state. Similarly, when the operating temperature of the (m/2 + 1) th motor unit 1 reaches a predetermined level, the main control computer 5 switches the (m/2 + 1) th motor unit 1 to the standby state and switches the second motor unit 1 from the standby state to the power supply state. By analogy, the main control computer 5 can ensure that the motor unit 1 which is powered up has time and space for heat dissipation, and the temperature is reduced to a lower temperature, so that the motor unit is suitable for next power supply.

In the motor application case, the power supply is not a fixed power supply, but a mobile power supply provided by a battery is used, and how good the use of the power is, how good the use of the power becomes an important factor for good and bad application. If the application condition is that the speed is required to be fast or slow during movement, when the fast rotation is changed into the slow speed, the braking mode is used, power is wasted, and the generated energy can be recovered from the inertial rotation. The multi-layer motor can transfer part of the motor unit 1 from the standby state to the generator function, and recover the energy.

Electric vehicles are one example of a mobile power application. When the electric vehicle is running at a high speed, the running speed needs to be reduced or even the vehicle is stopped according to the road surface condition. When the vehicle runs at high speed, the general control computer should only use part of the motor units 1 as power supply to provide the power required by the high-speed running, and the other part of the motor units 1 are in a standby state. When the driver starts to reduce the speed, the general control computer can convert the motor unit 1 in the ready state into a generator, recover the redundant power in the system, convert the energy generated in the inertial rotation into electric power, and store the electric power in the battery. If the electric vehicle needs to be stopped, the master control computer can convert more motor units 1 or all the motor units 1 into a generator, recover all power and convert energy generated in inertial rotation into electric power. If desired, the braking system may be used simultaneously to speed up the time required for parking.

Referring to fig. 4, the control system further comprises a master power management computer 13, said master power management computer 13 being connected to a master battery pack 9, the master battery pack 9 being connected to a battery train comprising a plurality of slave battery packs 10, each slave battery pack 10 operating independently, each slave battery pack 10 being connected to one motor unit 1.

When the first slave battery pack 10 is connected to the motor unit 1, the second slave battery pack 10 supplies power to the motor unit 1 connected thereto, and the motor unit 1 operates, in which the first slave battery pack 10 and the motor unit 1 connected thereto are in a sleep state, and if the voltage of the first slave battery pack 10 is insufficient for the next power supply and the operating temperature is suitable for charging, the first slave battery pack 10 is connected to the master battery pack 9 to rapidly supplement power. When the power of the second slave battery pack 10 is about to be consumed or the operating temperature of the slave battery pack 10 reaches a specified level, the remaining slave battery pack 10 is also used to replace the second slave battery pack 10 for power supply.

The battery pack is connected with a general quick charge unit 11, the general quick charge unit 11 is connected with the main battery pack 9, when the electric quantity of the slave battery pack 10 is insufficient, the battery pack is charged through the general quick charge unit 11, and the L general quick charge units 11 are independently charged. The main battery pack 9 is also connected with a high-power quick charging unit 12, and the high-power quick charging unit 12 and the common quick charging unit 11 operate independently and do not interfere with each other. The first general quick charge unit 11 checks the voltage of the first slave battery pack 10 first, and performs charging if the first slave battery pack 10 is not fully charged. Otherwise, the voltage of the second slave battery pack 10 is checked again, and if the second slave battery pack 10 is not fully charged, charging is performed. Since the L normal quick charge units 11 and the high power quick charge unit 12 are operated independently, the master battery pack 9 and the plurality of slave battery packs 10 have different capacities due to the difference of the overall charging time. However, the motor unit 1 is independently supplied with power from the respective slave battery packs 10, and the power amount does not necessarily need to be uniform among the slave battery packs 10. Avoid carrying out automatic voltage balance work between group battery and the group battery, reduce the power loss greatly. The slave battery pack 10 can be mobile charged by the stored energy battery pack when necessary. In a multi-layer motor system, flexible use is realized.

In addition, this kind of mode reduces the electric power load requirement of quick charge, reduces the safety risk of quick charge. Because the whole system is provided with L +1 chargers, the energy involved in charging is not concentrated on one charger, and the energy can be easily reached in safety. Under the demand of quick charging, the device can more easily reach the safety standard. In this embodiment, the motor unit 1 in the multi-layer motor is the non-magnetic core permanent magnet motor unit 1 or the non-permanent magnet induction motor unit 1, which is only for convenience of description the present invention simplifies the description, but does not indicate or suggest that the indicated motor unit 1 must use the switched reluctance motor unit 1, and any motor unit 1 without cogging effect can be the motor unit 1 of the multi-layer motor.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (6)

1. The utility model provides a multilayer motor, its characterized in that, multilayer motor includes L motor element, and every motor element includes stator element and rotor element, L motor element's stator element is along the axial range upon range of range and fixed together, and L motor element's rotor element is along the axial layer range and fix in the pivot, and the pivot passes in the centre of motor element, drives rotor element through the pivot and rotates, and every stator element includes m group's coil, has n group's phase place in every group coil, and every motor element all has m x n group excitation coil and a set of rotor element that corresponds, and wherein L, m and n are for being greater than 1 natural number, motor element is for no tooth's socket torque or no magnetic card torque motor element.

2. A multi-layer electrical machine as claimed in claim 1, wherein the machine elements are coreless permanent-magnet machine elements or non-permanent-magnet induction machine elements, and the multi-layer electrical machine is adapted to be used with one or more machine elements without cogging torque in different applications, the number and phase of the field coils of the stator elements are the same as the number and phase, and the position of the field coils of the other stator elements, the rotor elements are fixed to the same shaft, and the number and position of the magnetic poles or induction poles on the rotor element of each machine element are the same as those of the other rotor elements.

3. A multi-layer motor as claimed in claim 1, wherein said stator unit comprises: the permanent magnet motor without the iron core comprises a stator unit and a non-permanent magnet induction motor unit, wherein the stator unit and the non-permanent magnet induction motor unit are arranged and fixed in an axial stacking manner, and the rotor unit comprises: the permanent magnet motor comprises a coreless permanent magnet motor rotor unit and a non-permanent magnet induction motor unit, wherein the coreless permanent magnet motor rotor unit and the non-permanent magnet induction motor unit are arranged in an axial stacking mode and are fixed on a rotating shaft, the rotor units are transversely arranged or longitudinally arranged, and the rotor units are wrapped by stator units.

4. A control system for a multi-layer motor, the control system comprising: the motor driver is controlled by the main control computer, and the motor driver controls the motor units correspondingly connected;

the motor driver detects and calculates the phase of the stator unit in each motor unit and the relative position between the magnetic poles in the rotor unit through the Hall detection element coaxially connected with the motor units and the back electromotive force of the motor units.

5. The control system of a multi-layer motor according to claim 4, wherein the main control calculator instructs the motor units to alternately operate and sleep according to the states of the respective motor units and the operating temperature data.

6. The control system for a multi-layer motor according to claim 4, further comprising a master power management computer, said master power management computer being connected to a master battery pack, said master battery pack being connected to a battery train, said battery train including a plurality of slave battery packs, each slave battery pack being connected to one of said motor units.

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