TWM666247U - Energy-saving battery DC brushless motor - Google Patents

Abstract

This new invention is a novel brushless DC motor that can convert motor torque in multiple stages with fixed current. A plurality of coil groups can be arranged inside a brushless DC motor, and a DC-DC converter group and a plurality of energy-saving battery groups are arranged outside the brushless DC motor to form an "energy-saving battery DC brushless motor". The brushless DC motor is provided with an N-pole magnet, an S-pole magnet and a rotating shaft, the plurality of coil groups are provided with a plurality of coils, the DC-DC converter group is provided with a plurality of converters, and the plurality of energy-saving battery groups are provided with a plurality of energy-saving batteries. The energy-saving battery DC brushless motor utilizes the plurality of energy-saving battery groups (fixed current) to supply power to the plurality of coil groups in a time-sharing manner via the DC-DC converter group, and drives the N-pole magnet and the S-pole magnet to rotate by electromagnetic action between the plurality of coil groups and the N-pole magnet and the S-pole magnet, and utilizes the rotating shaft to drive a load to work. The energy-saving battery DC brushless motor forms an "energy-saving battery-guided stator flux conversion mechanism" through the multiple coil groups, the DC-DC converter group, and the multiple energy-saving battery groups, so that the multiple energy-saving battery groups can be used to convert the electromagnetic interaction intensity between the multiple coil groups and the N-pole magnet and the S-pole magnet, 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 energy-saving battery groups (fixed current multi-stage torque driving). Thus, by using this new invention, the "energy-saving battery DC brushless motor" composed of a plurality of coils of a brushless DC motor, a DC-DC converter, and a plurality of energy-saving batteries can be used for multi-stage torque conversion of the motor. By using this new concept of power conversion of the plurality of coils and the plurality of energy-saving batteries, the power consumption characteristics and purpose of the brushless DC motor can be achieved with a fixed current for multi-stage torque driving.

Description

Energy-saving battery DC brushless motor

This new invention is about a "energy-saving battery DC brushless motor", especially a brushless DC motor that uses a plurality of coils, a DC-DC converter, and a plurality of energy-saving batteries to drive a brushless DC motor, so that the plurality of coils, the DC-DC converter, and the plurality of energy-saving 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 related 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 brushless DC 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 brushless DC motor of an electric vehicle to drive a load using a battery is shown in FIG. 1. A brushless DC motor 01 is connected to a load 02. The brushless DC motor 01 is composed of an N-pole magnet 011, an S-pole magnet 012, a coil 013, a coil 014, and a Hall sensor. The brushless DC motor 01 uses a battery 03 to provide a DC power source to the coil 013 and the coil 014, which can drive the N-pole magnet 011 and the S-pole magnet 012 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 travel. When the electric vehicle is driving with increasing or decreasing torque, the DC power source supplies a variable current, so that the battery 03 of the electric vehicle also needs to provide a variable current for the brushless DC motor 01.

However, when the electric vehicle is driving at an increased torque, the discharge current of the battery 03 increases and the discharge voltage drops quickly. When the electric vehicle is driving at a reduced torque, the discharge current of the battery 03 decreases and the discharge voltage drops slowly. The voltage of the battery 03 often fluctuates, making the electrochemical reaction inside the battery 03 unstable, which may cause the performance of the battery 03 to be damaged. In addition, when the electric vehicle is driving at a high torque, the discharge current of the battery 03 may be too large. Long-term or continuous excessive discharge current will cause the battery 03 to overheat frequently, causing permanent structural damage to the battery 03. Therefore, the innovative electric vehicle brushless DC motor that safely uses batteries to increase and decrease torque has also become a new research direction for electric vehicle manufacturers.

In view of the disadvantages of using batteries (variable current) in the brushless DC motors for electric vehicles derived from the above-mentioned previous technologies, the creators of this new project are eager to improve and innovate it. After many days of painstaking research, they finally successfully developed and completed a "energy-saving battery DC brushless motor" in this project.

The purpose of this new invention is to provide a brushless DC motor for electric vehicles 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 a brushless DC motor, and a DC-DC converter group and a plurality of energy-saving battery groups are set outside the brushless DC motor, so that the plurality of coil groups, the DC-DC converter group, and the plurality of energy-saving battery groups can perform multi-stage torque conversion of the motor, and the plurality of energy-saving battery groups can supply power to the brushless DC motor in a time-sharing manner with a fixed current, thereby achieving the power consumption characteristics and purpose of the brushless DC motor that can perform multi-stage torque driving with a fixed current.

To achieve the above-mentioned purpose, the technical means of this novel creation is to set a plurality of coil groups inside a brushless DC motor, and set a DC-DC converter group and a plurality of energy-saving battery groups outside the brushless DC motor to jointly form an "energy-saving battery DC brushless motor", which is a constant current DC motor. The energy-saving battery DC brushless motor has a motor electromagnetic iron stator (multiple coil stator) composed of a plurality of coils and a motor magnetic rotor composed of an N-pole magnet and an S-pole magnet inside the brushless DC motor. The motor electromagnetic iron stator is indirectly electrically connected to a plurality of energy-saving battery groups (fixed current) outside the brushless DC motor, and the motor magnetic rotor is mechanically connected to a load outside the brushless DC motor through a rotating shaft. The motor electromagnetic iron stator is also electrically connected to a DC-DC converter group outside the brushless DC motor.

The energy-saving battery DC brushless motor utilizes the external multiple energy-saving battery pack (fixed current) to supply power to the motor electromagnetic iron stator with multiple coil groups in a time-sharing manner. Through the electromagnetic effect between the multiple coil groups and the motor magnetic iron rotor with N-pole magnets and S-pole magnets, the N-pole magnets and S-pole magnets can be driven to rotate and the rotating shaft can be used to drive the load to work. The energy-saving battery DC brushless motor can form an "energy-saving battery-guided stator flux conversion mechanism" through the multiple coil groups, the DC-DC converter group, and the multiple energy-saving battery groups, so that the multiple energy-saving battery groups can be used to convert the electromagnetic interaction intensity between the motor electromagnetic iron stator with multiple coil groups and the motor magnetic iron rotor with N-pole magnets and S-pole magnets, 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 energy-saving battery groups (fixed current power supply, motor multi-stage torque driving).

Thus, by using the "energy-saving battery DC brushless motor" composed of a plurality of coils of a brushless DC motor, a DC-DC converter set, and a plurality of energy-saving battery sets in this new invention, the "energy-saving battery-guided stator flux conversion mechanism" of the plurality of coils, the DC-DC converter set, and the plurality of energy-saving battery sets can perform multi-stage torque conversion of the motor and supply power to the brushless DC motor in a time-sharing manner with a fixed current. By using this new concept of power conversion and supply by a plurality of coils and a plurality of energy-saving battery sets, the power consumption characteristics and purpose of the brushless DC motor can be achieved with a fixed current for multi-stage torque driving.

Please refer to the following detailed description and attached pictures of a preferred embodiment of this new creation "Energy-saving Battery DC Brushless Motor" to further understand the technical content, purpose and effect of this creation:

11: Brushless DC motor

111: N-pole magnet

112: S-polar magnet

113: Rotating shaft

1141: First coil

1142: First coil

1151: Second coil

1152: Second coil

12: Load

13: DC-DC converter set

131: First converter

132: Second converter

14: Constant current energy-saving battery pack

141: The first energy-saving battery

142: Second energy-saving battery

Figure 1 is a structural diagram of a brushless DC motor commonly used in electric vehicles.

Figure 2 is a block diagram of the structure and current flow of multiple coil groups, DC-DC converter groups, and multiple energy-saving battery groups in the first stage of torque rotation of the motor in a preferred embodiment of this new invention "Energy-saving Battery DC Brushless Motor".

Figure 3 is a block diagram of the structure and current flow of multiple coil groups, DC-DC converter groups, and multiple energy-saving battery groups in the second stage of the motor's torque rotation in a preferred embodiment of this new invention "Energy-saving Battery DC Brushless Motor".

Figure 4 is a block diagram of the structure and current flow of multiple coil groups, DC-DC converter groups, and multiple energy-saving battery groups in the third stage of the motor torque rotation in a preferred embodiment of this new invention "Energy-saving Battery DC Brushless Motor".

The energy-saving battery DC brushless motor provided by this novel invention is shown in Figure 2. The energy-saving battery DC brushless motor has a brushless DC motor 11 inside. The brushless DC motor 11 has a motor magnet rotor composed of an N-pole magnet 111 and an S-pole magnet 112. The motor magnet rotor is mechanically connected to a load 12 outside the brushless DC motor 11 through a rotating shaft 113. The brushless DC motor 11 also has a motor electromagnetic stator composed of a first coil 1141, a first coil 1142 and a second coil 1151, a second coil 1152 (forming a multiple coil stator).

The energy-saving battery DC brushless motor is further provided with a DC-DC converter set 13 inside, and the DC-DC converter set 13 is provided with a first converter 131 and a second converter 132 inside. The first coil 1141 and the first coil 1142 of the motor electromagnetic iron stator are electrically connected to the first converter 131 of the DC-DC converter set 13, and the second coil 1151 and the second coil 1152 of the motor electromagnetic iron stator are electrically connected to the second converter 132 of the DC-DC converter set 13.

The energy-saving battery DC brushless motor is also provided with a constant current energy-saving battery set 14 inside, and the constant current energy-saving battery set 14 is provided with a first energy-saving battery 141 and a second energy-saving battery 142 inside. The first converter 131 of the DC-DC converter set 13 is electrically connected to the first energy-saving battery 141 of the constant current energy-saving battery set 14, and the second converter 132 of the DC-DC converter set 13 is electrically connected to the second energy-saving battery 142 of the constant current energy-saving battery set 14.

The first coil 1141, the first coil 1142, the second coil 1151, the second coil 1152 (plural coil groups) of the motor electromagnetic stator, the first converter 131, the second converter 132 of the DC-DC converter group 13, and the first energy-saving battery 141, the second energy-saving battery 142 (plural energy-saving battery groups) of the constant current energy-saving battery group 14 together constitute an "energy-saving battery-guided stator flux conversion mechanism" to form a brushless DC motor that can be driven and switched using energy-saving batteries.

Please refer to FIG. 2 . The energy-saving battery DC brushless motor utilizes the first energy-saving battery 141 (fixed current) of the constant current energy-saving battery group 14 to supply power to the first coil 1141 and the first coil 1142 of the motor electromagnetic iron stator in a time-sharing manner through the first converter 131 of the DC-DC converter group 13. The electromagnetic effect between the first coil 1141 and the first coil 1142 and the N-pole magnet 111 and the S-pole magnet 112 can drive the motor magnetic rotor with the N-pole magnet 111 and the S-pole magnet 112 to rotate, and the rotating shaft 113 is used to drive the load 12 to work. In this way, the energy-saving battery DC brushless motor can partially change the electromagnetic interaction strength between the motor electromagnetic iron stator and the motor electromagnetic iron rotor, thereby partially changing the rotation torque of the rotating shaft 113 to perform the first torque rotation of the motor, and does not affect the current flow of the first energy-saving battery 141 (battery fixed current supply, motor first torque rotation).

Alternatively, please refer to FIG. 3 , the energy-saving battery DC brushless motor utilizes the second energy-saving battery 142 (fixed current) of the constant current energy-saving battery set 14 to supply power to the second coil 1151 and the second coil 1152 of the motor electromagnetic iron stator in a time-sharing manner via the second converter 132 of the DC-DC converter set 13. The electromagnetic effect between the second coil 1151 and the second coil 1152 and the N-pole magnet 111 and the S-pole magnet 112 can drive the motor magnetic rotor having the N-pole magnet 111 and the S-pole magnet 112 to rotate, and the rotating shaft 113 is used to drive the load 12 to work. In this way, the energy-saving battery DC brushless motor can partially change the electromagnetic interaction strength between the motor electromagnetic iron stator and the motor electromagnetic iron rotor, thereby partially changing the rotation torque of the rotating shaft 113 to perform the second torque rotation of the motor, and does not affect the current flow of the second energy-saving battery 142 (battery fixed current supply, motor second torque rotation).

Furthermore, please refer to FIG. 4 , the energy-saving battery DC brushless motor uses the first energy-saving battery 141 (fixed current) of the constant current energy-saving battery set 14 to supply power to the first coil 1141 and the first coil 1142 of the motor electromagnetic iron stator in a time-sharing manner through the first converter 131 of the DC-DC converter set 13, and the energy-saving battery DC brushless motor uses the second energy-saving battery 142 (fixed current) of the constant current energy-saving battery set 14 through the DC-DC converter. The second converter 132 of the group 13 can supply power to the second coil 1151 and the second coil 1152 of the motor electromagnetic iron stator in a time-sharing manner, and through the electromagnetic effect between the first coil 1141, the first coil 1142, the second coil 1151, the second coil 1152 and the N-pole magnet 111 and the S-pole magnet 112, the motor magnetic rotor with the N-pole magnet 111 and the S-pole magnet 112 can be driven to rotate, and the rotating shaft 113 is used to drive the load 12 to work. In this way, the energy-saving battery DC brushless motor can completely transform the electromagnetic interaction strength between the motor electromagnetic iron stator and the motor electromagnetic iron rotor, and then completely change the rotation torque of the rotating shaft 113 to perform the fourth stage torque rotation of the motor, and does not affect the current flow of the first energy-saving battery 141 and the second energy-saving battery 142 (battery fixed current supply, motor third stage torque rotation).

In the new invention of the "energy-saving battery DC brushless motor", the brushless DC motor 11 utilizes the external constant current energy-saving battery set 14 (plural energy-saving battery sets) and the DC-DC converter set 13 to partially or fully supply power to the motor electromagnetic iron stator (plural coil sets) to drive the motor magnetic rotor to rotate to perform the motor multi-stage torque conversion work without affecting the current flow of the constant current energy-saving battery set 14 (fixed current supply, motor multi-stage torque drive). Thus, by using the "energy-saving battery DC brushless motor" composed of a plurality of coils of a brushless DC motor, a DC-DC converter, and a plurality of energy-saving battery groups in this new invention, and by using this new type of multiple coils and multiple energy-saving battery groups to switch power supply concepts, the brushless DC motor can achieve the power consumption characteristics and purpose of fixed current for multi-stage torque driving, without causing the battery performance to be damaged by the frequent fluctuation of the battery voltage during the increase or decrease of torque driving of the electric vehicle, or the long-term or continuous excessive discharge current of the electric vehicle battery causing overheating inside the battery, causing permanent structural damage to the battery.

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

11: Brushless DC motor

111: N-pole magnet

112: S-polar magnet

113: Rotating shaft

1141: First coil

1142: First coil

1151: Second coil

1152: Second coil

12: Load

13: DC-DC converter set

131: First converter

132: Second converter

14: Constant current energy-saving battery pack

141: The first energy-saving battery

142: Second energy-saving battery

Claims (4)

An energy-saving battery DC brushless motor, comprising: A brushless DC motor, which is a load driving device; An N-pole magnet is disposed inside the brushless DC motor; An S-pole magnet is disposed inside the brushless DC motor; A rotating shaft is disposed inside the brushless DC motor; A load, disposed outside the brushless DC motor; The N-pole magnet and the S-pole magnet form a motor magnet rotor, and the motor magnet rotor is mechanically connected to the load through the rotating shaft; A first coil, disposed inside the brushless DC motor; A second coil, disposed inside the brushless DC motor; The first coil and the second coil constitute a motor electromagnetic stator; A DC-DC converter set is arranged outside the brushless DC motor; A first converter, disposed inside the DC-DC converter group; A second converter, disposed inside the DC-DC converter group; The first coil of the motor electromagnetic iron stator is electrically connected to the first converter of the DC-DC converter group, and the second coil of the motor electromagnetic iron stator is electrically connected to the second converter of the DC-DC converter group; A certain current energy-saving battery pack is installed outside the brushless DC motor; A first energy-saving battery, arranged inside the constant current energy-saving battery pack; 1. A second energy-saving battery, arranged inside the constant current energy-saving battery pack; The first converter of the DC-DC converter group is electrically connected to the first energy-saving battery of the constant current energy-saving battery group, and the second converter of the DC-DC converter group is electrically connected to the second energy-saving battery of the constant current energy-saving battery group; The first coil and the second coil of the motor electromagnetic stator are composed of a plurality of coil groups, the first converter and the second converter of the DC-DC converter group, and the first energy-saving battery and the second energy-saving battery of the constant current energy-saving battery group are composed of a plurality of energy-saving battery groups, together forming an "energy-saving battery-guided stator flux conversion mechanism" to form a brushless DC motor that can be driven by an energy-saving battery. As described in claim 1, the energy-saving battery DC brushless motor uses the first energy-saving battery of the constant current energy-saving battery group to supply power to the first coil of the motor electromagnetic iron stator through the first converter of the DC-DC converter group in a time-sharing manner, and the electromagnetic effect between the first coil and the N-pole magnet and the S-pole magnet can drive the N-pole magnet. , the motor magnet rotor of the S-pole magnet rotates, and the rotating shaft is used to drive the load to work; in this way, the energy-saving battery DC brushless motor can partially change the electromagnetic interaction intensity between the motor electromagnetic stator and the motor magnet rotor, and then partially change the rotation torque of the rotating shaft to perform the first torque rotation work of the motor, and does not affect the current flow of the first energy-saving battery. As described in claim 1, the energy-saving battery DC brushless motor uses the second energy-saving battery of the constant current energy-saving battery group to supply power to the second coil of the motor electromagnetic iron stator through the second converter of the DC-DC converter group in a time-sharing manner, and the electromagnetic effect between the second coil and the N-pole magnet and the S-pole magnet can drive the N-pole magnet. , the motor magnet rotor of the S-pole magnet rotates, and the rotating shaft is used to drive the load to work; in this way, the energy-saving battery DC brushless motor can partially change the electromagnetic interaction intensity between the motor electromagnetic stator and the motor magnet rotor, and then partially change the rotation torque of the rotating shaft to perform the second torque rotation work of the motor, and does not affect the current flow of the second energy-saving battery. As described in claim 1, the energy-saving battery DC brushless motor uses the first energy-saving battery of the constant current battery group to supply power to the first coil of the motor electromagnetic iron stator in a time-sharing manner through the first converter of the micro-controlled DC-DC converter group, and the energy-saving battery-driven DC brushless motor uses the second energy-saving battery of the constant current battery group to supply power to the second coil of the motor electromagnetic iron stator in a time-sharing manner through the second converter of the micro-controlled DC-DC converter group, and the first coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, the second coil, The electromagnetic effect between the second coil and the N-pole permanent magnet and the S-pole permanent magnet can drive the motor permanent magnet rotor 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 energy-saving battery DC brushless motor can completely transform the electromagnetic effect intensity between the motor electromagnetic stator and the motor permanent magnet rotor, and then completely change the rotation torque of the rotating shaft to perform the third torque rotation work of the motor, and does not affect the current flow of the first energy-saving battery and the second energy-saving battery.

Images