Abstract:
A generator motor, an electric automobile and an electric ship driven by this kind of generator motor are provided. Said generator motor includes a rotating shaft ( 180 ), a generator stator ( 110 ), a rotator ( 120 ) and a motor stator ( 130 ), the generator stator ( 110 ), the rotator ( 120 ) and the motor stator ( 130 ) are installed on the rotating shaft ( 180 ) form the inner side to the outer side sequently. A generator rotator winding and a motor rotator winding are disconnected and arranged alternately on said rotator ( 120 ). The generator motor runs driven by the external electric supply, and the generating part generates electric power at the same time. The generator motor supplies the power to the electric automobile and the electric ship, which consumes the electric quantity of the storage cell ( 322 ) and supplements electric quantity to the storage cell at the same time, and the using time of the storage cell is prolonged.

Description:
FIELD OF THE PATENT APPLICATION 
       [0001]    The present patent application generally relates to motors, more particularly to a generator motor, an electric automobile and an electric ship driven by such generator motor. 
       BACKGROUND OF THE PATENT APPLICATION 
       [0002]    As rapid development of industries and rapid increase of the quantity of automobiles in the cities, nature energy sources such as oil are gradually reduced, and great amount of discharged harmful gas seriously pollutes the atmosphere, speeds up green house effect of the earth, and continuously worsens environment for people living. Therefore, problems with respect to shortage of energy sources, air pollution are focus concerned by countries all over the world nowadays, and various kinds of automobiles driven by other green energy such as electric energy, solar energy occur. 
         [0003]    An electric automobile driven by electric energy generally carries a storage cell, through which the motor is supplied with power to run and drive a shaft rotating, and in turn drive a driving wheel via differential gears. Since electric power of the storage cell is limited, and re-charge of the storage cell needs to wait for a period of time, application range of such electric automobiles is greatly restricted. 
         [0004]    It is known that the motor generates electromagnetic torque through interaction between a rotary magnetic field of the stator and induced current of the rotator, and then output it via the shaft. A certain proportion of power loss exists when the motor runs. When the motor is used on an automobile with storage cell having limited electric quantity, such power loss will speed up consumption of electric quantity of the storage cell. Therefore, studies on how to reduce power loss of the motor to make it more power saving and even on reutilization of power loss of the motor, become a key point of research. 
       SUMMARY OF THE PATENT APPLICATION 
       [0005]    Aiming at the disadvantages of the motors in the prior art, the present application is intended to provide a generator motor, an electric automobile and an electric ship driven by such kind of generator motor in order to achieve recycling of energy. 
         [0006]    According to an aspect of the present application, a generator motor is provided, comprising a rotating shaft, a generator stator, a rotator, and a motor stator, the generator stator, the rotator, and the motor stator are installed on the rotating shaft sequentially from inside to outside, wherein the generator stator has a plurality of first protrusions symmetrically distributed along its circumferential direction, and a generator stator winding is arranged on said plurality of first protrusions; the motor stator has a plurality of second protrusions extending inward and symmetrically distributed along its inner wall, and a motor stator winding is arranged on said plurality of second protrusions; the rotator includes a plurality of first partial tubular members which have a first inner diameter and a first outer diameter, and a corresponding plurality of second partial tubular members which have a second inner diameter and a second outer diameter, and the plurality of first partial tubular members and the plurality of second partial tubular members are connected alternately with each other along its circumferential direction, the first inner diameter is less than the second inner diameter, and the first outer diameter is less than the second outer diameter, wherein a generator rotator winding is arranged on the plurality of first partial tubular members, and a motor rotator winding is arranged on the plurality of second partial tubular members. 
         [0007]    In an embodiment of the present application, the generator stator and the motor stator are installed on the rotating shaft of the generator motor via bearings respectively. The rotator is fixedly installed on the rotating shaft of the generator motor via sleeves. 
         [0008]    According to another aspect of the present application, an electric automobile is provided, comprising a storage cell, a motor, a clutch, a gear box, a universal joint, a rear bridge, a differential gear, and a plurality sets of front wheels and rear wheels, motive power generated by the motor when it is powered from the storage cell to run, being transferred to the rear wheels via the clutch, the gear box, the universal joint, the rear bridge and the differential gear installed on the central shaft, and then via a half shaft, wherein the motor is a generator motor of the present application as described above, a motor stator winding of the generator motor is connected externally to the storage cell, and electric current generated from a generator rotator winding of the generator motor is connected to the storage cell. 
         [0009]    In an embodiment of the present application, at least a generator driven by the shaft is arranged on a non-output terminal of the shaft of the generator motor, and at least another generator driven by the shaft is arranged on the shaft between the generator motor and the clutch. 
         [0010]    In an embodiment of the present application, at least a generator driven by the central shaft of the electric automobile is arranged on the central shaft to supply power to the storage cell. 
         [0011]    In an embodiment of the present application, each of the plurality sets of front wheels and rear wheels is provided with a generator which runs with rotation of the corresponding wheel to supply power to the storage cell. 
         [0012]    According to yet another aspect of the present application, an electric ship is provided, comprising at least one propulsion system, wherein in each propulsion system a motor is powered by a storage cell to drive a screw propeller running, and said motor is a generator motor of the present application as described above, a motor stator winding of the generator motor is connected externally to the storage cell, and electric current generated from a generator rotator winding of the generator motor is connected to the storage cell. 
         [0013]    In an embodiment of the present application, on a rotating shaft of each propulsion system, at least one generator which is driven by the shaft is arranged to supply power to the storage cell. 
         [0014]    In an embodiment of the present application, at the bottom of the electric ship, at least one hydraulic turbine driven by water flow is arranged. 
         [0015]    The generator motor, the electric automobile and the electric ship in accordance with embodiments of the present application have the following advantages: the present application shares a special designed rotator for the generator rotator and the motor rotator, such that the generator and the motor are integrated into a whole. When the motor portion is initiated with external power supply to run, the generator portion is driven to generate electric energy simultaneously. The generated electric energy may be used as a supplement to the external power supply of the motor portion, thereby power consumption of the generator motor is significantly reduced, and recycling and reuse of kinetic energy is achieved. In the electric automobile and the electric ship driven by such generator motors, storage cells are used to supply power for the generator motor to initiate the automobile and the ship, and then the generator portion of the generator motor runs along with operation of the motor portion to generate electric energy, which is supplied to the storage cells. In such a way, during the traveling of the automobile and the ship, the generator motors can continuously supplement partial electric quantity to the storage cells while they are consuming electric quantity of the storage cells, thus service time of the storage cells is prolonged, and traveling distance of the automobile and the ship is extended. The electric automobile and the electric ship are more energy-saving through recycling of kinetic energy. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]      FIG. 1  is a structural diagram showing a generator motor in accordance with a first embodiment of the present application. 
           [0017]      FIG. 2  is a diagram showing assembly of the generator motor as shown in  FIG. 1  in accordance with the first embodiment of the present application. 
           [0018]      FIG. 3  is a structural diagram showing a generator motor in accordance with a second embodiment of the present application. 
           [0019]      FIG. 4  is a diagram showing a chassis transmission system of an electric automobile driven by a generator motor in accordance with an embodiment of the present application. 
           [0020]      FIG. 5  is a diagram showing an electric ship driven by a generator motor in accordance with an embodiment of the present application. 
           [0021]      FIG. 6  is a diagram showing an electric ship in accordance with another embodiment of the present application. 
       
    
    
     DETAILED DESCRIPTION 
       [0022]    These and other aspects of the present application will be further described from the following description of the embodiments taken in conjunction with the drawings. 
         [0023]      FIG. 1  is a structural diagram showing a generator motor in accordance with a first embodiment of the present application. As shown in  FIG. 1 , a generator stator  110 , a rotator  120  and a motor stator  130  are arranged sequentially from inside to outside within a housing (not shown) of the generator motor. The generator stator  110  comprises a columnar body and three arc-shaped protrusions  112  which are arranged symmetrically along the outer circumference of the columnar body. The columnar body has a central hole  140 . A generator stator winding is arranged in the three arc-shaped protrusions  112 . The motor stator  130  is tubular and has three arc-shaped protrusions  132  symmetrically arranged along its inner wall. The three arc-shaped protrusions are used to wind a motor stator winding. The rotator  120  is substantially tubular, and is consisted of three first partial tubular members  122 ,  124 , and  126 , which have a first inner diameter and a first outer diameter, and three second partial tubular members  121 ,  123 , and  125 , which have a second inner diameter and a second outer diameter, and the three first partial tubular members  122 ,  124 ,  126  and the three second partial tubular members  121 ,  123 ,  125  are connected alternately with each other, wherein the first inner diameter is less than the second inner diameter, the first outer diameter is less than the second outer diameter, and the first outer diameter may be equal to the second inner diameter. The first partial tubular members  122 ,  124  and  126  of the rotator  120  are wound with a generator rotator winding, while the second partial tubular members  121 ,  123  and  125  of the rotator  120  are wound with a motor rotator winding, but the generator rotator winding is disconnected with the motor rotator winding. In such a way, the rotator  120  is shared as the generator rotator and the motor rotator. The inner generator stator  110  interacts with the rotator  120  to form a generator, and the outer motor stator  130  interacts with the rotator  120  to form a motor, thereby a generator motor integrated with the generator and the motor is achieved. 
         [0024]      FIG. 2  is a assembly diagram of the generator motor as shown in  FIG. 1 . As shown in  FIG. 2 , the generator motor comprises a rotating shaft  180  for outputting torque. The generator stator  110  is rotatablely installed on the rotating shaft  180  via bearings  150 . The rotator  120  is fixedly installed on the rotating shaft  180  at the inner wall of the first partial tubular members  122 ,  124  and  126  via sleeves  160 . The motor stator  130  is rotatablely installed on the rotating shaft  180  via bearing end covers  170 . The above-mentioned components constitute a core portion of the generator motor. The core portion may be supported in the housing through the rotating shaft, and also may be provided with a frame for connection with other application structures. Since these are prior art, detailed description with respect to these structures is omitted in the present application. 
         [0025]    Working principle of the generator motor will be described in conjunction with the first embodiment of the present application as below: 
         [0026]    When the motor stator wingding of the outer motor stator  130  is connected to external power supply, interaction between the motor stator winding and the motor rotator winding arranged on the second partial tubular members  121 ,  123  and  125  of the rotator  120  generates electromagnetic torque, which drives the rotator  120  rotating, in turn drives the shaft  180  rotating, then electric energy is converted into mechanical energy. The output torque of the shaft  180  then drives a central shaft or associated mechanical shafts of the automobile rotating. During the rotation of the shaft  180  driven by the rotator  120 , the generator rotator winding arranged on the first partial tubular members  122 ,  124  and  126  of the rotator  120  cuts magnetic line in the magnetic filed produced by the generator stator  110  to generate induced current. The induced current is outputted from the generator rotator winding and is supplied to the storage cell after being processed, then mechanical energy is converted into electric energy. Then, the storage cell may supply power to the motor portion of the generator motor to drive the rotator  120  again, and rotation of the rotator  120  then generates induced current to supplement electric quantity of the storage cell. In such a manner of recycling, power consumption of the motor is significantly reduced, and recycling and reuse of kinetic energy is achieved. 
         [0027]      FIG. 3  is a structural diagram showing a generator motor in accordance with a second embodiment of the present application. As shown in  FIG. 3 , a generator stator  210 , a rotator  220  and a motor stator  230  are arranged sequentially from inside to outside within a housing (not shown) of the generator motor. The second embodiment as shown in  FIG. 3  has a similar structure as the first embodiment shown in  FIG. 1 . The generator stator  210  comprises a columnar body and four arc-shaped protrusions  212  which are arranged symmetrically along the outer circumference of the columnar body. The columnar body has a central hole  240 . A generator stator winding is arranged in the four arc-shaped protrusions  212 . The motor stator  230  is tubular and has four arc-shaped protrusions  132  symmetrically arranged along its inner wall. The four arc-shaped protrusions are used to wind a motor stator winding. The rotator  220  is substantially tubular, and is consisted of four first partial tubular members  222 ,  224 ,  226  and  228 , which have a first inner diameter and a first outer diameter, and four second partial tubular members  221 ,  223 ,  225  and  227 , which have a second inner diameter and a second outer diameter, and the four first partial tubular members  222 ,  224 ,  226 ,  228  and the four second partial tubular members  221 ,  223 ,  225 ,  227  are connected alternately with each other, wherein the first inner diameter is less than the second inner diameter, the first outer diameter is less than the second outer diameter, and the first outer diameter may be equal to the second inner diameter. The first partial tubular members  222 ,  224 ,  226  and  228  of the rotator  220  are wound with a generator rotator winding, while the second partial tubular members  221 ,  223 ,  225  and  227  of the rotator  220  are wound with a motor rotator winding, but the generator rotator winding is disconnected with the motor rotator winding. In such a way, the rotator  220  is shared as the generator rotator and the motor rotator. The inner generator stator  210  interacts with the rotator  220  to form a generator, and the outer motor stator  230  interacts with the rotator  220  to form a motor, thereby a generator motor integrated with the generator and the motor is achieved. 
         [0028]      FIG. 4  is a diagram showing a transmission system of an electric automobile  300  driven by a generator motor in accordance with an embodiment of the present application. As shown in  FIG. 4 , the electric automobile  300  is driven by a generator motor  302 . The rotating shaft of the generator motor  302  is connected to the central shaft  324  of the automobile via a clutch  304 . Then, the output torque from the generator motor  302  is decelerated via a gear box  306 , and transmitted to a differential gear  312  through a universal joint  308 , and then transmitted to a set of rear wheels  316  through a half shaft  314 . The clutch  304 , the gear box  306 , the universal joint  308 , the differential gear  312  and the transmission thereof may be realized through various technical means in the prior art, so detailed discussion regarding this portion is omitted here. 
         [0029]    As shown in  FIG. 4 , the electric automobile includes a storage cell  322  for providing power supply to the generator motor  302 . The storage cell is electrically connected to the motor stator winding of the generator motor  302  via wires. When the generator motor  302  is initiated to run utilizing power supply from the storage cell  322 , the generator motor  302  drives the central shaft  324  rotating, in turn drives the automobile traveling forward. After the generator motor  302  is initiated to run, the generator portion of the generator motor  302  outputs electric current to the storage cell  322  continuously. That is, kinetic energy of rotation of the generator motor  302  is sufficiently reused and converted into electric energy. In such a way, service time of the storage cell  322  may be prolonged. 
         [0030]    Since electric energy generated by self power generation of the generator motor  302  is not enough to supplement the electric energy consumed by its motor portion, in the embodiment of the present application as shown in  FIG. 4 , the electric automobile is further provide with a generator  320  at the non-output terminal of the generator motor  302 . A rotator of the generator  320  is driven by and rotates with the shaft of the generator motor  302 . Electric energy generated from the generator  320  is supplied to the storage cell  322  after some necessary processing such as A/D conversion. Additionally, a further generator  311  is arranged on the shaft between the output terminal of the generator motor  302  and the clutch. A rotator of the generator  311  is driven by and rotates with the shaft of the generator motor  302 , and electric energy generated from the generator  311  is also supplied to the storage cell  322  after some necessary processing. With such design of the electric automobile, electric quantity of the storage cell can not only be supplemented during the traveling through driving the generator producing electricity, but also can be supplemented when the electric automobile doesn&#39;t work. For example, when the automobile is waiting red light, idle running of the generator motor  302  may also drive the generators  311  and  320  on its shaft to generate electricity. 
         [0031]    Further, a generator  310  is installed on the central shaft  324  of the electric automobile. The generator  310  is driven by the central shaft  324  to generate electric current to the storage cell  322 .  FIG. 4  shows only an embodiment of the present application, but the present application is not limited as illustrated. It can be understood by one skilled in the art that the number of the generators, which utilize rotation energy of the generator motor  302  to re-generate electricity, such as the generators  310 ,  311  and  320 , is not limited to the illustrated embodiment in  FIG. 4 . Upon actual application and available chassis space, the number of the generators may be adjusted. 
         [0032]    In order to use the output energy of the generator motor  302  more sufficiently, the electric automobile is provided with a generator  318  on each wheel of the two sets of front and real wheels  316 . Running of the wheel  316  drives the generator  318  to generate electricity, and the generated electric energy is transmitted to the storage cell  322 . Additionally, a plurality of small wind-driven generators may be arranged above the windscreens of the automobile so as to utilize wind energy during traveling. The generated electric energy is transmitted into the storage cell  322 . 
         [0033]    In virtue of the above-described design, the electric automobile of the present application can supplement electric quantity of the storage cell through recycling and reuse of kinetic energy converted into electric energy in the case that electric quantity of the storage cell is limited. Thus service time of the storage cell is prolonged to the utmost, then application range of the electric automobile is extended. 
         [0034]      FIG. 5  is a diagram showing an electric ship  400  driven by the generator motor in accordance with an embodiment of the present application. The electric ship  400  utilizes a same driving principle as the electric automobile  300  shown in  FIG. 3 . As shown in  FIG. 5 , the electric ship  400  is driven by a generator motor  412 . The generator motor  412  drives a shaft  410  and in turn a screw propeller  411  running, which pushes the ship traveling. Highpower ship are usually equipped with more than one set of propulsion systems, for example, in the embodiment as shown in  FIG. 5 , there are three sets of propulsion systems. Each set of the propulsion system is provided with a generator motor for driving the corresponding shafts  410 ,  420  and  430  rotating to run the respective screw propellers. 
         [0035]    The generator motors in the individual sets of propulsion systems of the electric ship  400  are powered by the storage cells. For example, when the generator motor  412  is initiated to run utilizing power supply of the storage cell, it drives the shaft  410  rotating, which in turn drives the screw propeller  411  running. When the generator motor  412  is running, its generator portion starts generating electricity, kinetic energy of rotation of the generator motor  412  is converted into electric energy stored in the storage cell. Further, in order to use kinetic energy of rotation sufficiently, at the non-output terminal and the output terminal of the generator motor in each set of propulsion system, at least one generator is installed respectively, which is driven by the corresponding generator motor. For example, in the embodiment as shown in  FIG. 5 , a generator  413  is installed at the non-output terminal of the generator motor  412 . A rotator of the generator  413  runs with rotation of the shaft of the generator motor  412 , and the generated electric energy is supplied to the storage cell to supplement its electric quantity after some necessary processing such as A/D conversion. Three additional generators  414 ,  415  and  416  are installed on the shaft  410 . They are all driven by the shaft  410  to generate electricity, which is provided to the storage cell. 
         [0036]      FIG. 6  is an electric ship  500  in accordance with another embodiment of the present application. The electric ship  500  may utilize the same propulsion system as in the electric ship  400  shown in  FIG. 5 . That is, the screw propeller is driven by motive power from the generator motor, which runs with power supply from the storage cell, and the storage cell is supplemented by self generated electricity of the generator motor and electric energy generated by the individual generators driven by the generator motor. In such a way, recycling and reuse of kinetic energy is achieved. The electric ship  500  shown in  FIG. 6  is further equipped with a group of plurality of hydraulic turbines  502 . The hydraulic turbines  502  are driven by water flow during traveling of the ship  500  to generate electricity. The generated electric energy may be supplied to the storage cell, or directly supplied to various consumer devices on the ship  500 .