TWI858559B - Induction motor system with multistage driving capability via distributed electric batteries - Google Patents

Abstract

This invention is a novel induction motor system that can convert motor torque in multiple stages with fixed current. A plurality of coil groups can be arranged inside an induction motor, and a micro-control inverter group and a plurality of battery groups are arranged outside the induction motor to form a "distributed battery multi-stage drive induction motor system". The induction motor is provided with an iron core winding rotor and a rotating shaft, the plurality of coil groups are provided with a plurality of triode coils, the micro-control inverter group is provided with a plurality of inverters, and the plurality of battery groups are provided with a plurality of batteries. The distributed battery multi-stage drive induction motor system utilizes the multiple battery groups (fixed current) to supply power to the multiple coil groups via the micro-controlled inverter group, and drives the iron core winding rotor to rotate by the electromagnetic effect between the multiple coil groups and the iron core winding rotor, and utilizes the rotating shaft to drive a load to work. The distributed battery multi-stage drive induction motor system forms a "battery-guided stator flux conversion mechanism" through the multiple coil group, the micro-control inverter group, and the multiple battery groups, so that the multiple battery groups can be used to convert the electromagnetic interaction intensity between the multiple coil groups and the iron core winding rotor, thereby changing the rotation torque of the rotating shaft to perform motor multi-stage torque driving work without affecting the current flow of the multiple battery groups (fixed current multi-stage torque drive). Thus, by using the "distributed battery multi-stage drive induction motor system" composed of a plurality of coils of an induction motor, a micro-control inverter, and a plurality of battery groups in this invention, the plurality of coils, the micro-control inverter, and the plurality of battery groups can perform multi-stage torque conversion of the motor. By using this new concept of power conversion of the plurality of coils and the plurality of battery groups, the power consumption characteristics and purpose of the induction motor being able to drive the multi-stage torque with a fixed current can be achieved.

Description

Distributed battery multi-stage drive induction motor system

This invention is related to a "distributed battery multi-stage drive induction motor system", especially an induction motor system that uses a plurality of coils, a micro-controlled inverter, and a plurality of batteries to drive an induction motor, so that the plurality of coils, the micro-controlled inverter, and the plurality of batteries can perform multi-stage torque conversion of the motor.

According to the current era of unstable oil supply and fluctuating oil prices, the cost of using oil-related energy may increase. At the same time, for the sake of the earth's environment, in order to avoid drastic changes in the environment caused by excessive carbon dioxide emissions due to the use of oil, all parties advocate relevant practices of energy conservation and carbon reduction, such as the development and use of electric vehicles. Among them, the innovative and safe use of batteries to power electric vehicle motors (such as induction motors) to improve the long-term use of batteries is also a specific practice of energy conservation and carbon reduction.

The conventional method of using a battery to power an electric vehicle induction motor to drive a load is shown in FIG. 1. An induction motor 01 is connected to a load 02. The induction motor 01 is composed of an iron core winding rotor 011 and a coil 012 and a coil 013. The induction motor 01 uses an inverter 03 and a battery 04 to provide an AC power source to the coil 012 and the coil 013, which can drive the iron core winding rotor 011 to rotate, drive the load 02, and perform the motor torque increase and decrease work, so that the electric vehicle can increase and decrease the torque to drive. When the electric vehicle is driving with increasing or decreasing torque, the AC power source supplies a variable current, so that the battery 04 of the electric vehicle also needs to provide a variable current for the induction motor 01.

However, when the electric vehicle is driving at an increased torque, the discharge current of the battery 04 increases and the discharge voltage drops quickly. When the electric vehicle is driving at a reduced torque, the discharge current of the battery 04 decreases and the discharge voltage drops slowly. The voltage difference of the battery 04 often fluctuates, making the electrochemical reaction inside the battery 04 unstable, which may cause the performance of the battery 04 to be damaged. In addition, when the electric vehicle is driving at a high torque, the discharge current of the battery 04 may be too large. Long-term or continuous excessive discharge current will cause the battery 04 to overheat frequently, causing permanent structural damage to the battery 04. Therefore, the innovative electric vehicle induction motor that safely uses batteries to increase and decrease torque has become a new research direction for electric vehicle manufacturers.

In view of the above-mentioned disadvantages of the battery used in the electric vehicle induction motor derived from the previous technology (variable current), the inventor of this case was eager to improve and innovate it. After many days of painstaking research, he finally successfully developed and completed a "distributed battery multi-stage drive induction motor system" in this case.

The purpose of this invention is to provide an electric vehicle induction motor system that can perform multi-stage torque conversion of the motor with a fixed current. The concept is that a plurality of coil groups can be set inside an induction motor, and a micro-controlled inverter group and a plurality of battery groups are set outside the induction motor, so that the plurality of coil groups, the micro-controlled inverter group, and the plurality of battery groups can perform multi-stage torque conversion of the motor, and the battery group supplies power to the induction motor in a fixed current manner, thereby achieving the power consumption characteristics and purpose of the induction motor being able to perform multi-stage torque driving with a fixed current.

To achieve the above-mentioned purpose, the technical means of the invention is to set a plurality of coil groups inside an induction motor, and set a micro-control inverter group and a plurality of battery groups outside the induction motor to form a "distributed battery multi-stage drive induction motor system" together, which is a constant current AC motor. The distributed battery multi-stage drive induction motor system is provided with a motor electromagnetic iron stator (multiple coil stator) composed of a plurality of coil groups and a core winding rotor inside the induction motor. The motor electromagnetic iron stator is indirectly electrically connected to a plurality of battery groups (constant current) outside the induction motor, and the core winding rotor is mechanically connected to a load outside the induction motor through a rotating shaft. The motor electromagnetic stator is also electrically connected to a micro-control inverter unit outside the induction motor.

The distributed battery multi-stage drive induction motor system utilizes the external multiple battery packs (fixed current) to supply power to the motor electromagnetic iron stator with multiple coil groups. Through the electromagnetic effect between the multiple coil groups and the iron core winding rotor, the iron core winding rotor can be driven to rotate and the rotating shaft can be used to drive the load to work. The distributed battery multi-stage drive induction motor system can form a "battery-guided stator flux conversion mechanism" through the multiple coil groups, the micro-control inverter group, and the multiple battery groups, so that the multiple battery groups can be used to convert the electromagnetic interaction intensity between the motor electromagnetic iron stator with multiple coil groups and the iron core winding rotor, thereby changing the rotation torque of the rotating shaft to perform motor multi-stage torque driving work, and does not affect the current flow of the multiple battery groups (fixed current power supply, motor multi-stage torque drive).

Thus, by using the "distributed battery multi-stage drive induction motor system" composed of a plurality of coils of an induction motor, a micro-control inverter, and a plurality of battery groups in this invention, the "battery-guided stator flux conversion mechanism" of the plurality of coils, the micro-control inverter, and the plurality of battery groups can perform multi-stage torque conversion of the motor and supply power to the induction motor with a fixed current. By using this new concept of power conversion and supply of multiple coils and multiple battery groups, the power consumption characteristics and purpose of the induction motor being able to drive with a fixed current for multiple stages of torque can be achieved.

Please refer to the following detailed description and attached diagrams of a preferred embodiment of this invention "Distributed Battery Multi-stage Drive Induction Motor System" to further understand the technical content, purpose and effect of this invention:

11: Multi-stage drive induction motor

111: Iron core winding rotor

112: Rotating shaft

1131: First triode coil

1132: First triode coil

1141: Second triode coil

1142: Second triode coil

12: Load

13: Micro-control inverter set

131: First inverter

132: Second inverter

14: Constant current battery pack

141: First Battery

142: Second battery

Figure 1 is a structural diagram of a commonly used electric vehicle induction motor.

Figure 2 is a structural block diagram and connection diagram of the motor multiple coil group, micro-control inverter group, and multiple battery groups in a preferred embodiment of the invention "Distributed Battery Multi-stage Drive Induction Motor System".

Figure 3 is a block diagram of the structure and current flow of multiple coil groups, micro-control inverter groups, and multiple battery groups during normal torque rotation of the motor in a preferred embodiment of the invention "Distributed Battery Multi-stage Drive Induction Motor System".

Figure 4 is a block diagram of the structure and current flow of multiple coil groups, micro-control inverter groups, and multiple battery groups during the motor torque increase rotation in a preferred embodiment of the invention "Distributed Battery Multi-stage Drive Induction Motor System".

Figure 5 is a block diagram of the structure and current flow of multiple coil groups, micro-control inverter groups, and multiple battery groups in the motor torque reduction rotation in a preferred embodiment of the invention "Distributed Battery Multi-stage Drive Induction Motor System".

The invention provides a "distributed battery multi-stage drive induction motor system", as shown in Figure 2. The distributed battery multi-stage drive induction motor system is provided with a multi-stage drive induction motor 11, and a core winding rotor 111 is provided inside the multi-stage drive induction motor 11. The core winding rotor 111 is mechanically connected to a load 12 outside the multi-stage drive induction motor 11 through a rotating shaft 112; the multi-stage drive induction motor 11 is also provided with a motor electromagnetic iron stator (forming a multiple coil stator) composed of a first triode 1131, a first triode 1132, a second triode 1141, and a second triode 1142.

The distributed battery multi-stage drive induction motor system is also provided with a micro-control inverter group 13, and a first inverter 131 and a second inverter 132 are provided inside the micro-control inverter group 13. The first triode coil 1131 and the first triode coil 1132 of the motor electromagnetic iron stator are electrically connected to the first inverter 131 of the micro-control inverter group 13, and the second triode coil 1141 and the second triode coil 1142 of the motor electromagnetic iron stator are electrically connected to the second inverter 132 of the micro-control inverter group 13.

The distributed battery multi-stage drive induction motor system is also provided with a constant current battery set 14, and a first battery 141 and a second battery 142 are provided inside the constant current battery set 14. The first inverter 131 of the micro-control inverter set 13 is electrically connected to the first battery 141 of the constant current battery set 14, and the second inverter 132 of the micro-control inverter set 13 is electrically connected to the second battery 142 of the constant current battery set 14.

The first triode coil 1131, the first triode coil 1132, the second triode coil 1141, the second triode coil 1142 (plural coil groups) of the motor electromagnetic stator, the first inverter 131, the second inverter 132 of the micro-control inverter group 13, and the first battery 141, the second battery 142 (plural battery groups) of the constant current battery group 14 together constitute a "battery-guided stator flux conversion mechanism" to form an induction motor system that can be driven in multiple stages using distributed batteries.

Please refer to FIG. 3 , the distributed battery multi-stage driven induction motor system utilizes the second battery 142 (fixed current) of the constant current battery pack 14 to supply power to the second triode coil 1141 and the second triode coil 1142 of the motor electromagnetic iron stator via the second inverter 132 of the micro-control inverter pack 13. The second triode coil 1141 and the second triode coil 1142 are electromagnetically coupled to the core winding rotor 111 to drive the core winding rotor 111 to rotate, and the rotating shaft 112 is used to drive the load 12 to work. In this way, the distributed battery multi-stage drive induction motor system can partially change the electromagnetic interaction strength between the motor electromagnetic iron stator and the iron core winding rotor 111, thereby partially changing the rotation torque of the rotating shaft 112 to perform normal torque rotation of the motor, and does not affect the current flow of the second battery 142 (battery fixed current supply, motor normal torque rotation).

Alternatively, please refer to FIG. 4 , the distributed battery multi-stage drive induction motor system utilizes the second battery 142 (fixed current) of the constant current battery pack 14 to supply power to the second triode coil 1141 and the second triode coil 1142 of the motor electromagnetic stator via the second inverter 132 of the micro-control inverter group 13. In addition, the distributed battery multi-stage drive induction motor system utilizes the first battery 141 (fixed current) of the constant current battery pack 14 to supply power to the second triode coil 1141 and the second triode coil 1142 of the motor electromagnetic stator via the second inverter 132 of the micro-control inverter group 13. The first inverter 131 of the inverter group 13 can also supply power to the first triode 1131 and the first triode 1132 of the motor electromagnetic iron stator, and the first triode 1131, the first triode 1132, the second triode 1141, the second triode 1142 and the iron core winding rotor 111 can be driven to rotate by the electromagnetic action between the first triode 1131, the first triode 1132, the second triode 1141, the second triode 1142 and the iron core winding rotor 111, and the rotating shaft 112 is used to drive the load 12 to work. In this way, the distributed battery multi-stage drive induction motor system can completely change the electromagnetic interaction intensity between the motor electromagnetic iron stator and the iron core winding rotor 111, and then completely change the rotation torque of the rotating shaft 112 to perform the motor torque-enhanced rotation work without affecting the current flow of the first battery 141 and the second battery 142 (battery fixed current supply, motor torque-enhanced rotation).

Furthermore, please refer to FIG. 5 , the distributed battery multi-stage driven induction motor system utilizes the first battery 141 (fixed current) of the constant current battery group 14 to supply power to the first triode coil 1131 and the first triode coil 1132 of the motor electromagnetic iron stator via the first inverter 131 of the micro-control inverter group 13. The first triode coil 1131 and the first triode coil 1132 are electromagnetically acted upon with the core winding rotor 111 to drive the core winding rotor 111 to rotate, and the rotating shaft 112 is utilized to drive the load 12 to work. In this way, the distributed battery multi-stage drive induction motor system can partially change the electromagnetic interaction strength between the motor electromagnetic iron stator and the iron core winding rotor 111, thereby partially changing the rotation torque of the rotating shaft 112 to perform the motor torque reduction rotation work without affecting the current flow of the first battery 141 (battery fixed current supply, motor torque reduction rotation).

In the "distributed battery multi-stage drive induction motor system" of the present invention, the multi-stage drive induction motor 11 utilizes the external constant current battery pack 14 (multiple battery packs) and the micro-control inverter group 13 to partially or fully power the motor electromagnetic iron stator (multiple coil groups) to drive the iron core winding rotor 111 to rotate to perform the motor multi-stage torque conversion work without affecting the current flow of the constant current battery pack 14 (fixed current supply, motor multi-stage torque drive). Thus, by using the "distributed battery multi-stage drive induction motor system" composed of a plurality of coils of an induction motor, a micro-control inverter, and a plurality of battery groups in this invention, and utilizing this new type of multiple coils and multiple battery groups to switch power supply concepts, the power consumption characteristics and purpose of the induction motor can be achieved with a fixed current for multi-stage torque drive, without causing the electric vehicle battery voltage difference to fluctuate frequently during the increase or decrease of torque driving, causing battery performance damage, or the electric vehicle battery overheating due to long-term or continuous excessive discharge current, causing permanent damage to the battery structure.

The above detailed description is a specific description of the feasible implementation examples of this invention, but the implementation examples are not used to limit the patent scope of this invention. Any equivalent implementation or modification that does not deviate from the technical spirit of this invention, such as: equivalent implementation examples of modifications, should be included in the patent scope of this case.

11: Multi-stage drive induction motor

111: Iron core winding rotor

112: Rotating shaft

1131: First triode coil

1132: First triode coil

1141: Second triode coil

1142: Second triode coil

12: Load

13: Micro-control inverter set

131: First inverter

132: Second inverter

14: Constant current battery pack

141: First Battery

142: Second battery

Claims (4)

A distributed battery multi-stage drive induction motor system, comprising: A multi-stage drive induction motor, which is a load-driving device; An iron core winding rotor is disposed inside the multi-stage drive induction motor; A rotating shaft is disposed inside the multi-stage drive induction motor; A load, disposed outside the multi-stage drive induction motor; The iron core winding rotor is mechanically connected to the load via the rotating shaft; A first triode coil, disposed inside the multi-stage drive induction motor; A second triode coil, disposed inside the multi-stage drive induction motor; The first triode coil and the second triode coil together form a motor electromagnetic iron stator, and the motor electromagnetic iron stator is a multiple coil stator; A micro-controlled inverter set is arranged outside the multi-stage drive induction motor; A first inverter, disposed inside the micro-controlled inverter group; A second inverter, disposed inside the micro-controlled inverter group; The first triode coil of the motor electromagnetic iron stator is electrically connected to the first inverter of the micro-control inverter group, and the second triode coil of the motor electromagnetic iron stator is electrically connected to the second inverter of the micro-control inverter group; A battery pack with a certain current is installed outside the multi-stage drive induction motor; A first battery, disposed inside the constant current battery pack; A second battery, disposed inside the constant current battery pack; The first inverter of the micro-controlled inverter group is electrically connected to the first battery of the constant current battery group, and the second inverter of the micro-controlled inverter group is electrically connected to the second battery of the constant current battery group; The multiple coil groups composed of the first triode coil and the second triode coil of the motor electromagnetic stator and the multiple battery groups composed of the first inverter and the second inverter of the micro-control inverter group and the first battery and the second battery of the constant current battery group together constitute a "battery-guided stator flux conversion mechanism" to form an induction motor system that can be driven in multiple stages using distributed batteries. As described in claim 1, the distributed battery multi-stage driven induction motor system utilizes the second battery of the constant current battery group to supply power to the second triode coil of the motor electromagnetic iron stator through the second inverter of the micro-control inverter group, and the electromagnetic effect between the second triode coil and the iron core winding rotor can drive the The iron core winding rotor rotates, and the rotating shaft drives the load to work; thus, the distributed battery multi-stage drive induction motor system can partially change the electromagnetic interaction intensity between the motor electromagnetic iron stator and the iron core winding rotor, thereby partially changing the rotation torque of the rotating shaft to perform normal torque rotation work of the motor, and does not affect the current flow of the second battery. As described in claim 1, the distributed battery multi-stage drive induction motor system utilizes the second battery of the constant current battery group to supply power to the second triode coil of the motor electromagnetic iron stator via the second inverter of the micro-controlled inverter group. In addition, the distributed battery multi-stage drive induction motor system utilizes the first battery of the constant current battery group to supply power to the first triode coil of the motor electromagnetic iron stator via the first inverter of the micro-controlled inverter group. The electromagnetic action between the first triode coil, the second triode coil and the iron core winding rotor can drive the iron core winding rotor to rotate, and the rotating shaft can be used to drive the load to work; in this way, the distributed battery multi-stage drive induction motor system can completely change the electromagnetic action intensity between the motor electromagnetic iron stator and the iron core winding rotor, and then completely change the rotation torque of the rotating shaft to perform the motor torque-enhancing rotation work without affecting the current flow of the first battery and the second battery. As described in claim 1, the distributed battery multi-stage driven induction motor system utilizes the first battery of the constant current battery group to supply power to the first triode coil of the motor electromagnetic iron stator through the first inverter of the micro-control inverter group, and the electromagnetic effect between the first triode coil and the iron core winding rotor can drive the The iron core winding rotor rotates, and the rotating shaft drives the load to work; thus, the distributed battery multi-stage drive induction motor system can partially change the electromagnetic interaction intensity between the motor electromagnetic iron stator and the iron core winding rotor, thereby partially changing the rotation torque of the rotating shaft to perform the motor torque reduction rotation work without affecting the current flow of the first battery.

Images