TWI808889B - Brushless direct current motor system with switching drive capability via distributed electric batteries - Google Patents

Abstract

This invention belongs to a novel brushless DC motor system with fixed current for multi-stage torque conversion of the motor. A complex coil group can be installed inside a brushless DC motor, and a micro-controlled DC-DC converter group and a plurality of battery groups can be arranged outside the brushless DC motor to jointly form a "distributed battery-driven switching brushless DC motor system". The brushless DC motor is provided with an N-pole permanent magnet, an S-pole permanent magnet and a rotating shaft, a plurality of three-pole coils are provided in the plurality of coil groups, a plurality of converters are provided in the micro-control DC-DC converter group, and a plurality of batteries are provided in the plurality of battery groups. The decentralized battery-driven switching brushless DC motor system utilizes the plurality of batteries (fixed current) to supply power to the plurality of coils through the micro-control DC-DC converter components, and utilizes the electromagnetic interaction between the plurality of coils and the N-pole permanent magnet and S-pole permanent magnet to drive the N-pole permanent magnet and S-pole permanent magnet to rotate and use the rotating shaft to drive a load to work. The distributed battery-driven switching brushless DC motor system forms a "battery-guided stator magnetic flux conversion mechanism" by the complex coil group, the micro-controlled DC-DC converter group, and the complex battery group. The multiple battery packs can be used to change the electromagnetic interaction strength between the multiple coil packs and the N-pole permanent magnets and S-pole permanent magnets, and then change the rotational torque of the rotating shaft for multi-stage torque driving of the motor without affecting the current flow of the multiple battery packs (fixed current multi-stage torque drive). In this way, using this invention, a "distributed battery-driven switching brushless DC motor system" composed of a brushless DC motor with multiple coils, a micro-controlled DC-DC converter, and a multiple battery can make the multiple coils, the micro-controlled DC-DC converter, and the multiple batteries be used for multi-stage torque conversion of the motor. Using this new concept of multiple coils and multiple battery packs to convert power supply, it will be possible to achieve the electrical characteristics and purpose of the brushless DC motor that can be driven by a fixed current for multi-stage torque.

Description

Decentralized battery-driven switched brushless DC motor system

This invention relates to a "distributed battery-driven switching brushless DC motor system", especially a brushless DC motor system that utilizes a complex coil set, a micro-controlled DC-DC converter set, and a complex battery set to drive a brushless DC motor, so that the complex coil set, the micro-controlled DC-DC converter set, and the multiple battery set can be used for multi-stage torque conversion of the motor.

By the way, in today’s era of unstable oil supply sources and fluctuating oil prices, the cost of using oil-related energy may increase. At the same time, for the sake of the global environment and to avoid drastic changes in the environment caused by excessive carbon dioxide emissions from the use of oil, all parties advocate energy-saving and carbon-reducing practices, 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: brushless DC motors) to improve the long-term use of batteries is also a specific approach to energy saving and carbon reduction.

Conventional electric vehicle brushless DC motor uses battery power to drive the load, please refer to Figure 1, where a brushless DC motor 01 is connected to a load 02, the The brushless DC motor 01 is composed of an N-pole permanent magnet 011, an S-pole permanent magnet 012, a coil 013, a coil 014, and a Hall induction device. The brushless DC motor 01 uses a battery 03 to provide a DC power supply to the coil 013 and the coil 014, which can drive the N-pole permanent magnet 011 and the S-pole permanent magnet 012 to rotate, drive the load 02 and perform motor torque addition and subtraction work, so that the electric vehicle can run with the addition and subtraction torque. When the electric vehicle is running with increasing or decreasing torque, the DC power supply supplies power for a variable current, so that the battery 03 of the electric vehicle must also provide a variable current for the brushless DC motor 01 to use.

However, when the electric vehicle is running with increased torque, the discharge current of the battery 03 increases, and the discharge voltage drops quickly. When the electric vehicle is running with reduced torque, the discharge current of the battery 03 decreases, and the discharge voltage drops slowly. , causing permanent structural damage to the battery 03. Therefore, the innovative electric vehicle brushless DC motor safely uses the battery for adding and subtracting torque, which has become a new research direction for electric vehicle manufacturers.

In view of the shortcomings of the electric vehicle brushless DC motor derived from the above-mentioned prior art (fluctuating current), the inventor of this case wanted to improve and innovate. After many days of painstaking research, he finally successfully developed a "distributed battery-driven switching brushless DC motor system" of this case.

The purpose of this invention is to provide a brushless DC motor system for electric vehicles that can perform multi-stage torque conversion with a fixed current. The concept is based on a brushless DC motor A plurality of coil groups can be installed inside the motor, and a micro-control DC-DC converter group and a plurality of battery groups can be installed outside the brushless DC motor, so that the plurality of coil groups, the micro-control DC-DC converter group, and the plurality of battery groups can be used for multi-stage torque conversion of the motor, and the plurality of battery groups can be used to supply power to the brushless DC motor in time-sharing in a fixed current mode, so as to achieve the electrical characteristics and purpose of the brushless DC motor that can be driven by a fixed current for multi-stage torque.

In order to achieve the above-mentioned purpose, the technical means of this invention is to set a plurality of coil groups inside a brushless DC motor, set a micro-controlled DC-DC converter group and a plurality of battery groups outside the brushless DC motor to jointly form a "distributed battery-driven switching brushless DC motor system", which is a constant current DC motor (Constant Current DC Motor). The decentralized battery-driven switching brushless DC motor system is provided with a motor electromagnet stator (a plurality of coil stators) composed of a plurality of coil groups inside the brushless DC motor and a motor permanent magnet rotor composed of an N pole permanent magnet and an S pole permanent magnet. The motor electromagnet stator is indirectly electrically connected to a plurality of battery packs (fixed current) outside the brushless DC motor, and the motor permanent magnet rotor is mechanically connected to a load outside the brushless DC motor through a rotating shaft. The electromagnet stator of the motor is also electrically connected with a micro-control DC-DC converter group outside the brushless DC motor.

The decentralized battery-driven switching brushless DC motor system utilizes the external multiple battery packs (fixed current) to supply time-sharing power to the motor electromagnet stator with multiple coil sets. Through the electromagnetic interaction between the multiple coil sets and the permanent magnet rotor of the motor with N-pole permanent magnets and S-pole permanent magnets, the N-pole permanent magnets and S-pole permanent magnets can be driven to rotate and use the rotating shaft to drive the load to work. The distributed battery-driven switching brushless DC motor system can form a "battery-oriented fixed" system by the complex coil set, the micro-controlled DC-DC converter set, and the multiple battery set. The sub-magnetic flux conversion mechanism" can use the complex battery pack to transform the electromagnetic interaction strength between the electromagnet stator of the motor with multiple coil sets and the permanent magnet rotor of the motor with N pole permanent magnets and S pole permanent magnets, and then change the rotational torque of the rotating shaft for multi-stage torque driving of the motor without affecting the current flow of the multiple battery packs (fixed current power supply, motor multi-stage torque drive).

In this way, in the creation of this invention, a "distributed battery-driven switching brushless DC motor system" composed of a plurality of coil groups of a brushless DC motor, a micro-controlled DC-DC converter group, and a plurality of battery groups enables the "battery-guided stator magnetic flux conversion mechanism" of the plurality of coil groups, the micro-control DC-DC converter group, and the plurality of battery groups. It will be able to achieve the power consumption characteristics and purpose of the brushless DC motor, which can be driven by a fixed current for multi-stage torque.

Please refer to the following detailed description and drawings of a preferred embodiment of the invention "distributed battery-driven switching brushless DC motor system" to further understand the technical content, purpose and effect of this invention:

11: Can drive and switch brushless DC motor

111:N pole permanent magnet

112: S pole permanent magnet

113: rotating shaft

1141: the first three-pole coil

1142: the first three-pole coil

1151: the second three-pole coil

1152: the second three-pole coil

12: load

13:Micro-controlled DC-DC converter group

131: First Converter

132: second converter

133: The third converter

134: The fourth converter

14: Constant current battery pack

141: The first battery

142: Second battery

Figure 1 is a structural diagram of a conventional brushless DC motor for an electric vehicle.

Figure 2 is a structural block diagram and connection diagram of multiple motor coil sets, micro-controlled DC-DC converter sets, and multiple battery sets in a preferred embodiment of the invention "distributed battery-driven switching brushless DC motor system".

Figure 3 is a better example of this invention creation "distributed battery-driven switching brushless DC motor system" In the embodiment, the structural block diagram and current flow diagram of the multiple coil sets, the micro-control DC-DC converter sets, and the multiple battery sets during the first stage of torque rotation of the motor.

Figure 4 is a structural block diagram and a schematic diagram of the current flow of multiple coil sets, micro-controlled DC-DC converter sets, and multiple battery sets during the second torque rotation of the motor in a preferred embodiment of the "distributed battery-driven switching brushless DC motor system" of this invention.

Figure 5 is a block diagram of the structure of multiple coil sets, micro-controlled DC-DC converter sets, and multiple battery sets and a schematic diagram of the current flow in a preferred embodiment of the "distributed battery-driven switching brushless DC motor system" of this invention.

Figure 6 is a block diagram and a schematic diagram of the current flow of multiple coil sets, micro-controlled DC-DC converter sets, and multiple battery sets in a preferred embodiment of the "distributed battery-driven switching brushless DC motor system" of the invention.

Figure 7 is a block diagram and a schematic diagram of the current flow of multiple coil sets, micro-controlled DC-DC converter sets, and multiple battery sets in a preferred embodiment of the "distributed battery-driven switching brushless DC motor system" of the invention.

Figure 8 is a structural block diagram and a schematic diagram of the current flow of multiple coil sets, micro-controlled DC-DC converter sets, and multiple battery sets during the sixth torque rotation of the motor in a preferred embodiment of the "distributed battery-driven switching brushless DC motor system" of this invention.

A "distributed battery-driven switching brushless DC motor system" provided by this invention is shown in Figure 2. The decentralized battery-driven switching brushless DC motor system is provided with a drivable switching brushless DC motor 11. The drivable switching brushless DC motor 11 is provided with a motor permanent magnet 111 composed of an N pole permanent magnet 111 and an S pole permanent magnet 112. Permanent magnet rotor, the permanent magnet rotor of the motor is mechanically connected with a load 12 outside the drivable switchable brushless DC motor 11 through a rotating shaft 113; the drivable switchable brushless DC motor 11 is also provided with a motor electromagnet stator (forming a plurality of coil stators) composed of a first three-pole coil 1141, a first three-pole coil 1142, a second three-pole coil 1151, and a second three-pole coil 1152.

The decentralized battery-driven switching brushless DC motor system is further provided with a micro-control DC-DC converter group 13, and the micro-control DC-DC converter group 13 is provided with a first converter 131, a second converter 132, a third converter 133, and a fourth converter 134. The first three-pole coil 1141 and the first three-pole coil 1142 of the motor electromagnet stator are electrically connected to the first converter 131 and the third converter 133 of the micro-control DC-DC converter group 13, and the second three-pole coil 1151 and the second three-pole coil 1152 of the motor electromagnet stator are electrically connected to the second converter 132 and the fourth converter 134 of the micro-control DC-DC converter group 13.

The distributed battery-driven switching brushless DC motor system also has a constant current battery pack 14 inside, and the constant current battery pack 14 has a first battery 141 and a second battery 142 inside. The first converter 131 and the second converter 132 of the micro-controlled DC-DC converter group 13 are electrically connected to the first battery 141 of the constant current battery pack 14, and the third converter 133 and the fourth converter 134 of the micro-controlled DC-DC converter group 13 are electrically connected to the second battery 142 of the constant current battery pack 14.

The first three-pole coil 1141, the first three-pole coil 1142, the second three-pole coil 1151, the second three-pole coil 1152 (complex coil group) of the motor electromagnet stator and the first converter 131, the second converter 132, the third converter 133, the fourth converter 134, and the first battery 141, the second The batteries 142 (plural battery packs) together constitute a "battery-guided stator flux conversion mechanism" to form a brushless DC motor system that utilizes distributed batteries for drive switching.

Please refer to FIG. 3, the distributed battery-driven switching brushless DC motor system utilizes the first battery 141 (fixed current) of the constant current battery pack 14 to supply power to the first three-pole coil 1141 and the first three-pole coil 1142 of the motor electromagnet stator through the first converter 131 of the micro-control DC-DC converter pack 13 in time division, and through the first three-pole coil 1141, the first three-pole coil 1142 and the N-pole permanent magnet 111 and the S-pole permanent magnet The electromagnetic action between 112 can drive the permanent magnet rotor of the motor with the N pole permanent magnet 111 and the S pole permanent magnet 112 to rotate, and utilize the rotating shaft 113 to drive the load 12 to work. In this way, the decentralized battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft 113 to perform the first stage torque rotation of the motor without affecting the current flow of the first battery 141 (the battery is powered by a fixed current, and the motor rotates with the first stage torque).

Or, as shown in FIG. 4, the decentralized battery-driven switching brushless DC motor system utilizes the first battery 141 (fixed current) of the constant current battery pack 14 to supply power to the second three-pole coil 1151 and the second three-pole coil 1152 of the motor electromagnet stator in time-division through the second converter 132 of the micro-control DC-DC converter set 13, and through the second three-pole coil 1151, the second three-pole coil 1152 and the N-pole permanent magnet 111 and the S-pole The electromagnetic action between the permanent magnets 112 can drive the permanent magnet rotor of the motor with the N pole permanent magnet 111 and the S pole permanent magnet 112 to rotate, and utilize the rotating shaft 113 to drive the load 12 to work. In this way, the decentralized battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotation axis The rotation torque of 113 is used for the second stage of torque rotation of the motor, and does not affect the current flow of the first battery 141 (the battery is powered by a fixed current, and the motor is rotated by the second stage of torque).

Or, as shown in FIG. 5, the decentralized battery-driven switching brushless DC motor system utilizes the second battery 142 (fixed current) of the constant current battery pack 14 to supply power to the first three-pole coil 1141 and the first three-pole coil 1142 of the electromagnet stator of the motor in time-division through the third converter 133 of the micro-control DC-DC converter set 13. The electromagnetic action between the permanent magnets 112 can drive the permanent magnet rotor of the motor with the N pole permanent magnet 111 and the S pole permanent magnet 112 to rotate, and utilize the rotating shaft 113 to drive the load 12 to work. In this way, the decentralized battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft 113 to perform the third-stage torque rotation of the motor without affecting the current flow of the second battery 142 (the battery is powered by a fixed current, and the motor rotates with the third-stage torque).

Furthermore, please refer to FIG. 6, the distributed battery-driven switching brushless DC motor system utilizes the first battery 141 (fixed current) of the constant current battery pack 14 to supply power to the second three-pole coil 1151 and the second three-pole coil 1152 of the motor electromagnet stator through the second converter 132 of the micro-control DC-DC converter set 13, and the distributed battery-driven switching brushless DC motor system utilizes the second battery 142 (fixed current) of the constant current battery pack 14 through the second three-pole coil 1151 of the motor solenoid stator. The third converter 133 of the micro-control DC-DC converter group 13 can supply power to the first three-pole coil 1141 and the first three-pole coil 1142 of the electromagnet stator of the motor in time division, and through the electromagnetic interaction between the first three-pole coil 1141, the first three-pole coil 1142, the second three-pole coil 1151, the second three-pole coil 1152 and the N-pole permanent magnet 111 and the S-pole permanent magnet 112 It can drive the permanent magnet rotor of the motor with the N-pole permanent magnet 111 and the S-pole permanent magnet 112 to rotate, and utilize the rotating shaft 113 to drive the load 12 to work. In this way, the decentralized battery-driven switching brushless DC motor system can completely change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then completely change the rotational torque of the rotating shaft 113 to perform the fourth-stage torque rotation of the motor without affecting the current flow of the first battery 141 and the second battery 142 (the battery is powered by a fixed current, and the motor is rotated by the fourth stage torque).

Or, please refer to Fig. 7, the distributed battery-driven switching brushless DC motor system utilizes the second battery 142 (fixed current) of the constant current battery pack 14 to supply power to the second three-pole coil 1151 and the second three-pole coil 1152 of the motor electromagnet stator in time-division through the fourth converter 134 of the micro-control DC-DC converter set 13, through the second three-pole coil 1151, the second three-pole coil 1152 and the N pole permanent magnet 111, the S pole The electromagnetic action between the permanent magnets 112 can drive the permanent magnet rotor of the motor with the N pole permanent magnet 111 and the S pole permanent magnet 112 to rotate, and utilize the rotating shaft 113 to drive the load 12 to work. In this way, the distributed battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft 113 to perform the fifth stage torque rotation of the motor without affecting the current flow of the second battery 142 (the battery is powered by a fixed current, and the motor rotates with the fifth stage torque).

Finally, as shown in FIG. 8, the distributed battery-driven switching brushless DC motor system utilizes the first battery 141 (fixed current) of the constant-current battery pack 14 to supply power to the first three-pole coil 1141 and the first three-pole coil 1142 of the motor electromagnet stator through the first converter 131 of the micro-control DC-DC converter set 13, and the distributed battery-driven switching brushless DC motor system utilizes the second battery 142 (fixed current) of the constant-current battery pack 14 Current) through the fourth converter 134 of the micro-control DC-DC converter group 13 can be time-divided to supply power to the second three-pole coil 1151 and the second three-pole coil 1152 of the motor electromagnet stator, and through the electromagnetic action between the first three-pole coil 1141, the first three-pole coil 1142, the second three-pole coil 1151, the second three-pole coil 1152 and the N-pole permanent magnet 111 and the S-pole permanent magnet 112. The N-pole permanent magnet 111 , the S-pole permanent magnet 112 , and the permanent magnet rotor of the motor rotate, and utilize the rotating shaft 113 to drive the load 12 to work. In this way, the decentralized battery-driven switching brushless DC motor system can completely change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then completely change the rotational torque of the rotating shaft 113 to perform the sixth-stage torque rotation of the motor without affecting the current flow of the first battery 141 and the second battery 142 (the battery is powered by a fixed current, and the motor is rotated by the sixth stage torque).

In this invention and creation of the "Diversified Battery Drive Switching Underwriting DC motor System", the driver can switch the brushless DC motor 11 to use the external current battery pack 14 (plural battery set) and the micro-control DC-DC converter group 13 to partially power supply or power to the motor electromagnet (plural coil group) to drive the motor permanent magnet rotation Sub -rotor motor motor multi -stage torque transformation work, and does not affect the current flow flow of the fixed current battery pack (fixed current power supply, motor multi -stage torque driver). In this way, using this invention, the "distributed battery-driven switching brushless DC motor system" composed of a brushless DC motor with a plurality of coil groups, a micro-control DC-DC converter group, and a plurality of battery groups can use this new concept of multiple coil groups and multiple battery groups to convert power supply, and can achieve the power consumption characteristics and purpose of the brushless DC motor. The fixed current can be used for multi-stage torque driving, and it will not happen during the driving of the electric vehicle when the torque is added or subtracted. Long-term or continuous excessive discharge current of the car battery will cause the internal overheating of the battery, causing the battery to be permanently damaged. In case of permanent structural damage.

The above detailed description is a specific description of the feasible embodiment of this invention, but the embodiment is not used to limit the patent scope of this invention. Any equivalent implementation or change that does not deviate from the spirit of this invention, such as: equivalent embodiments of other changes, should be included in the patent scope of this case.

11: Can drive and switch brushless DC motor

111:N pole permanent magnet

112: S pole permanent magnet

113: rotating shaft

1141: the first three-pole coil

1142: the first three-pole coil

1151: the second three-pole coil

1152: the second three-pole coil

12: load

13:Micro-controlled DC-DC converter group

131: First Converter

132: second converter

133: The third converter

134: The fourth converter

14: Constant current battery pack

141: The first battery

142: Second battery

Claims (7)

A decentralized battery driven switched brushless DC motor system comprising: A drivable switchable brushless DC motor, the drivable switchable brushless DC motor is a load driving device; An N-pole permanent magnet is located inside the drivable switchable brushless DC motor; An S-pole permanent magnet is located inside the drivable and switchable brushless DC motor; A rotating shaft is arranged inside the drivable and switchable brushless DC motor; A load is arranged outside the drivable and switched brushless DC motor; The N-pole permanent magnet and the S-pole permanent magnet constitute a motor permanent magnet rotor, and the motor permanent magnet rotor is mechanically connected to the load through the rotating shaft; a first three-pole coil arranged inside the drivable switchable brushless DC motor; a second three-pole coil disposed inside the drivable switchable brushless DC motor; The first three-pole coil and the second three-pole coil constitute a motor electromagnet stator; A micro-controlled DC-DC converter set is located outside the drive-switchable brushless DC motor; A first converter, located inside the micro-controlled DC-DC converter group; A second converter, located inside the micro-controlled DC-DC converter group; A third converter, located inside the micro-controlled DC-DC converter group; A fourth converter, located inside the micro-controlled DC-DC converter group; The first three-pole coil of the motor electromagnet stator is electrically connected to the first converter and the third converter of the micro-controlled DC-DC converter group, and the second three-pole coil of the motor electromagnet stator is electrically connected to the second converter and the fourth converter of the micro-control DC-DC converter group; A constant current battery pack is arranged outside the drivable and switched brushless DC motor; a first battery installed inside the constant current battery pack; a second battery installed inside the constant current battery pack; The first converter and the second converter of the micro-controlled DC-DC converter group are electrically connected to the first battery of the constant current battery pack, and the third converter and the fourth converter of the micro-controlled DC-DC converter group are electrically connected to the second battery of the constant current battery pack; The first three-pole coil and the second three-pole coil of the motor electromagnet stator consist of a plurality of coil groups, the first converter, the second converter, the third converter, the fourth converter of the micro-control DC-DC converter group, the first battery of the constant current battery pack, and the plurality of battery packs composed of the second battery, which together constitute a "battery-guided stator magnetic flux conversion mechanism" to form a brushless DC motor system that can be driven by distributed batteries. As described in Claim 1, the decentralized battery-driven switching brushless DC motor system uses the first battery of the constant-current battery pack to supply power to the first three-pole coil of the motor electromagnet stator in time-sharing through the first converter of the micro-control DC-DC converter set. By virtue of the electromagnetic interaction between the first three-pole coil and the N-pole permanent magnet and the S-pole permanent magnet, the permanent magnet rotor of the motor with the N-pole permanent magnet and the S-pole permanent magnet can be driven to rotate, and the rotating shaft is used to drive the load to work; In this way, the distributed battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft to perform the first stage torque rotation of the motor without affecting the current flow of the first battery. As described in Claim 1, the decentralized battery-driven switching brushless DC motor system uses the first battery of the constant current battery pack to supply power to the second three-pole coil of the motor electromagnet stator in time-sharing through the second converter of the micro-control DC-DC converter set. The second three-pole coil can drive the permanent magnet rotor of the motor with the N-pole permanent magnet and the S-pole permanent magnet to rotate through the electromagnetic interaction between the second three-pole coil and the N-pole permanent magnet and the S-pole permanent magnet, and use the rotating shaft to drive the load to work; In this way, the distributed battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft to perform the second stage torque rotation of the motor without affecting the current flow of the first battery. As described in Claim 1, the decentralized battery-driven switching brushless DC motor system uses the second battery of the constant-current battery pack to supply power to the first three-pole coil of the motor electromagnet stator in time-sharing through the third converter of the micro-control DC-DC converter set. By virtue of the electromagnetic interaction between the first three-pole coil and the N-pole permanent magnet and the S-pole permanent magnet, the permanent magnet rotor of the motor with the N-pole permanent magnet and the S-pole permanent magnet can be driven to rotate, and the load can be driven to work by using the rotating shaft; In this way, the distributed battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft to perform the third-stage torque rotation of the motor without affecting the current flow of the second battery. As described in Claim 1, the decentralized battery-driven switching brushless DC motor system uses the first battery of the constant current battery pack via the micro The second converter of the controlled DC-DC converter group can time-divisionally supply power to the second three-pole coil of the motor electromagnet stator, and the distributed battery-driven switching brushless DC motor system can use the second battery of the constant-current battery group to supply power to the first three-pole coil of the motor electromagnet stator through the third converter of the micro-control DC-DC converter group, and through the electromagnetic interaction between the first three-pole coil, the second three-pole coil and the N-pole permanent magnet and the S-pole permanent magnet. The motor permanent magnet rotor of the S pole permanent magnet rotates, and uses the rotating shaft to drive the load to work; in this way, the distributed battery-driven switching brushless DC motor system can completely change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then completely change the rotating torque of the rotating shaft to perform the fourth-stage torque rotation of the motor without affecting the current flow of the first battery and the second battery. As described in Claim 1, the distributed battery-driven switching brushless DC motor system, the decentralized battery-driven switching brushless DC motor system can use the second battery of the constant current battery pack to supply power to the second three-pole coil of the motor electromagnet stator in time-sharing through the fourth converter of the micro-control DC-DC converter group, through the electromagnetic interaction between the second three-pole coil and the N-pole permanent magnet and the S-pole permanent magnet, it can drive the permanent magnet rotor of the motor with the N-pole permanent magnet and the S-pole permanent magnet to rotate, and use the rotating shaft to drive the load to work; In this way, the decentralized battery-driven switching brushless DC motor system can partially change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then partially change the rotational torque of the rotating shaft to perform the fifth stage torque rotation of the motor without affecting the current flow of the second battery. As described in claim 1, the decentralized battery-driven switching brushless DC motor system uses the first battery of the constant-current battery pack to supply power to the first three-pole coil of the motor electromagnet stator in time-division through the first converter of the micro-controlled DC-DC converter group, and the distributed battery-driven switching brushless DC motor system uses the second battery of the constant-current battery pack to supply power to the second three-pole coil of the motor electromagnet stator through the fourth converter of the micro-control DC-DC converter group, and by The electromagnetic interaction between the first three-pole coil, the second three-pole coil, the N-pole permanent magnet, and the S-pole permanent magnet can drive the permanent magnet rotor of the motor with the N-pole permanent magnet and the S-pole permanent magnet to rotate, and use the rotating shaft to drive the load to work; thus, the distributed battery-driven switching brushless DC motor system can completely change the electromagnetic interaction strength between the motor electromagnet stator and the motor permanent magnet rotor, and then completely change the rotational torque of the rotating shaft to perform the sixth-stage torque rotation of the motor without affecting the current of the first battery and the second battery. traffic.

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