Air conditioner indoor unit control system based on application of two-phase claw pole type stepping motor

Abstract

The utility model discloses an air conditioner indoor unit control system based on the application of a two-phase claw-pole stepping motor, which is characterized in that a motor control module with a motor driving chip is connected with a master control MCU (Microprogrammed Control Unit) through a signal end, so that the connection wiring between the master control MCU and the motor control module is simplified; the number of connecting wires between each two-phase claw-pole stepping motor and the corresponding motor control module is reduced from original five to at least three, so that the comprehensive production cost is effectively reduced; more importantly, the motor control module is configured to be used for modulating two orthogonal sine wave current outputs and driving the two-phase claw-pole stepping motor rotor to rotate stably in the excitation rotation process, the output torque change is stable, and the stability of the motor is improved. Therefore, the two-phase claw-pole stepping motor and the structural moving part driven by the two-phase claw-pole stepping motor have the characteristics of stable operation and silence, and the problem that the structural moving part on the indoor unit of the air conditioner generates noise in the moving process and cannot improve the structural moving part and the matching of the structural moving part is effectively solved.

Description

[Technical field]

[0001] The utility model relates to air-conditioning equipment, in particular to an air-conditioning indoor unit control system based on the use of a two-phase claw-pole stepping motor. [Background technology]

[0002] At present, the motors used in the moving parts of the air conditioner indoor unit, such as dampers and air guides, are generally 20-50MM diameter two-phase claw-pole stepper motor bodies, which are generally 5-wire four-phase stepper motors driven by square wave drive; this drive mode is driven by directly supplying winding rectangular wave voltage according to the beat sequence. When the phase sequence is switched, the current obtained by the motor coil changes greatly, so the rotation torque of the magnetic rotor from the magnetic claw poles around the air gap also changes, causing the entire stepper motor with a gear reduction mechanism to generate a large noise due to vibration.

[0003] In addition, due to certain manufacturing errors and assembly errors in the dimensions of gears and other materials during the mass production of motors, when the gaps between the transmission components caused by these errors are unbalanced, or when resonance is generated on the final actual household appliance (air conditioner indoor unit), vibration and noise are more obvious.

[0004] In addition, there are also errors in the processing and assembly of the structural moving parts of the air-conditioning indoor unit. During the use of the air-conditioning indoor unit, the noise defects generated by the structural moving parts during movement have always been a prominent customer complaint. This problem has also been bothering engineers. Although a lot of hardware structure optimization has been done, the cause of the problem cannot be eradicated.

[0005] For a long time, in order to reduce or lower the noise or abnormal sound generated by the structural moving parts such as dampers and air guides on the indoor unit of the air conditioner during movement, engineers of air conditioner manufacturing companies generally solve the problem by improving the structural moving parts being driven, including the connection structure, shape, connection matching and materials of the structural moving parts. Specifically, there are methods such as adding soft spacers or changing the flexibility and material of the motor's fixed support, but none of them can significantly eliminate the vibration noise caused by the rotating air conditioner inner casing, and the frequency domain of this noise is between hundreds to thousands of hertz, which is sensitive to human ears. Especially in a quiet bedroom, the bad noise makes the end user's experience poor.

[0006] Therefore, the present invention is proposed just to solve the above-mentioned technical problems. [Utility Model Content]

[0007] The utility model aims to overcome the deficiencies of the prior art and provides an air-conditioning indoor unit control system based on the use of a two-phase claw-pole stepper motor. A motor control module having a motor driving chip is connected to a main control MCU via a signal end, thereby simplifying the connection wiring between the main control MCU and the motor control module, that is, the connection lines between each two-phase claw-pole stepper motor and the corresponding motor control module are simplified from the original five lines to a minimum of three lines, thereby effectively reducing the overall production cost. More importantly, the motor control module is configured to modulate two orthogonal sine wave current outputs and drive the two-phase claw-pole stepper motor rotor to achieve smooth rotation during the excitation rotation process, and the output torque changes smoothly, so that the two-phase claw-pole stepper motor itself and the structural moving parts driven by it have the characteristics of smooth and silent operation, effectively solving the problem that the structural moving parts on the air-conditioning indoor unit generate noise during the movement process and cannot be improved by improving the structural moving parts themselves and their coordination.

[0008] The utility model discloses an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, comprising a control mainboard 1 arranged in the air conditioner indoor unit, the control mainboard 1 is provided with a motor connection terminal 11 and an electrical appliance main control module 12 having a main control MCU 120, the air conditioner indoor unit control system also comprises a two-phase claw-pole stepper motor body 2 and a motor control module 3 having a motor drive chip 30, the motor control module 3 is configured to be used for subdividing the modulated sine wave current output to drive the two-phase claw-pole stepper motor body 2 to work, the output end of the two-phase claw-pole stepper motor body 2 is directly or indirectly connected to the structural moving part of the air conditioner indoor unit to drive the structural movement. The moving parts move; the electrical main control module 12 is directly or indirectly electrically connected to the motor control module 3 through the signal terminal, the ground terminal and the voltage terminal; the two-phase claw-pole stepper motor body 2 is connected to the control main board 1 through the motor connection terminal 11; the motor control module 3 has a motor logic operation drive unit 31, a pre-drive unit 32 and a full-bridge drive unit 33, the motor logic operation drive unit 31 is used to complete the pulse micro-segmentation algorithm and the orthogonal SPWM wave pulse generation of the two channels, the pre-drive unit 32 is used to complete the TTL level conversion to the level that can drive the MOS tube gate, and the full-bridge drive unit 33 is used to convert the pulse signal into power output.

[0009] As described above, an air-conditioning indoor unit control system based on the use of a two-phase claw-pole stepper motor comprises a plurality of two-phase claw-pole stepper motor bodies 2, the output end of each of the two-phase claw-pole stepper motor bodies 2 being correspondingly connected to a structural moving part of the air-conditioning indoor unit, the structural moving part comprising a damper moving part and a wind direction control guide moving part; each of the two-phase claw-pole stepper motor bodies 2 corresponds to a motor driver chip 30, the main control MCU 120 is configured to have a corresponding number of signal ends which are directly or indirectly electrically connected to corresponding input ends of the plurality of motor driver chips 30, and the control main board 1 is provided with motor connection terminals 11 matching the number of the two-phase claw-pole stepper motor bodies 2.

[0010] In the air conditioner indoor unit control system based on the two-phase claw-pole stepper motor as described above, the motor control module 3 is integrated on the control main board 1 and is located between the electrical main control module 12 and the motor connection terminal 11 connection circuit.

[0011] In the air conditioner indoor unit control system based on the two-phase claw-pole stepper motor as described above, the motor control module 3 is electrically connected to the coil winding input end of the two-phase claw-pole stepper motor body 2 via the motor connection terminal 11 .

[0012] As described above, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, the two-phase claw-pole stepper motor body 2 includes a motor housing 21, a stator assembly 23 with two coil windings arranged in the motor housing 21, and a rotor assembly 24. The stator assembly 23 is provided with four pins 231 electrically connected to the coil winding wire ends, each pin 231 is electrically connected to the output end of the motor control module 3 through a wire, or each pin 231 is correspondingly welded on a PCB1232, and each pin 231 is indirectly electrically connected to the output end of the motor control module 3 through the PCB1232.

[0013] As described above, in an air-conditioning indoor unit control system based on the use of a two-phase claw-pole stepper motor, a plurality of the motor drive chips 30 are packaged into one to form a motor control module 3, and integrated on a control main board 1, and the motor control module 3 is configured to have a signal input terminal that matches the number of the two-phase claw-pole stepper motor body 2 and is used to be directly or indirectly electrically connected to the corresponding signal terminal of the main control MCU 120.

[0014] In the air conditioner indoor unit control system based on the two-phase claw-pole stepper motor as described above, the motor control module 3 is arranged on the two-phase claw-pole stepper motor body 2, and the electrical main control module 12 is electrically connected to the motor connection terminal 11 on the control main board 1 through the signal terminal, the ground terminal and the voltage terminal.

[0015] As described above, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, the two-phase claw-pole stepper motor body 2 includes a motor housing 21, a stator assembly 23 with two coil windings arranged in the motor housing 21, and a rotor assembly 24. The stator assembly 23 is provided with four pins 231 electrically connected to the coil winding wire ends, and each pin 231 is welded on a PCB 2233 integrated with a motor control module 3, so that the input end of the motor control module 3 can be electrically connected to the motor connection terminal 11 on the control main board 1.

[0016] In the air conditioner indoor unit control system based on the two-phase claw-pole stepper motor as described above, the motor logic operation drive unit 31 is integrated into the main control MCU 120 or the appliance main control module 12 .

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The utility model adopts a two-phase claw-pole stepper motor, which is connected to the main control MCU through a signal end of a motor control module with a motor drive chip, thereby simplifying the connection wiring between the main control MCU and the motor control module, that is, the connection line between each two-phase claw-pole stepper motor and the corresponding motor control module is simplified from the original five lines to a minimum of three lines, which effectively reduces the comprehensive production cost;

[0019] 2. More importantly, the motor control module is configured to modulate two orthogonal sine wave current outputs and drive the two-phase claw-pole stepper motor rotor to achieve smooth rotation during the excitation rotation process, and the output torque changes smoothly, so that the two-phase claw-pole stepper motor itself and the structural moving parts driven by it have the characteristics of smooth and silent operation, which effectively solves the problem that the structural moving parts on the air-conditioning indoor unit generate noise during movement and cannot be solved by improving the structural moving parts themselves and their coordination.

[0020] 3. The modulated two orthogonal sine wave currents are transmitted to the two-phase claw-pole stepper motor, which effectively passivates the jitter of the rotor driven by the two-phase claw-pole stepper motor body, makes the rotor of the two-phase claw-pole stepper motor start and stop smoothly, and improves the service life of the gear transmission components on the two-phase claw-pole stepper motor;

[0021] 4. A two-phase claw-pole stepper motor is used. One of the two pins on the lower coil frame or the upper coil frame on the two-phase claw-pole stepper motor body is the starting point of the winding and the other is the end point of the winding. The winding is distributed in the two coil frames, with a total of two groups of coils. The distance between the two pins is increased, which reduces the difficulty of winding, optimizes the production process, improves production efficiency and yield rate, and further reduces costs.

[0022] 5. By optimizing the output power characteristics of the components of the power source that drives the movement of the structural moving parts, and at a reasonable economic cost, a silent effect that cannot be achieved no matter how the structural moving parts themselves and their coordination are improved is achieved.

Brief Description of the Drawings

[0023] Figure 1 This is a principle block diagram of the control system of the first embodiment of the utility model, in which the control main board is connected to a motor control module to control a two-phase claw-pole stepper motor, and the motor control module is arranged on the body of the two-phase claw-pole stepper motor;

[0024] Figure 2 This is a principle block diagram of a control system of Embodiment 2 of the present utility model, in which a control mainboard is connected to a motor control module to control a two-phase claw-pole stepper motor, and the motor control module is integrated on the control mainboard;

[0025] Figure 3 This is a principle block diagram of the control system of the third embodiment of the utility model, in which the control main board is connected with a plurality of motor control modules to control a plurality of two-phase claw-pole stepper motors, and the motor control modules are arranged on the corresponding two-phase claw-pole stepper motors;

[0026] Figure 4 This is a principle block diagram of a control system of Embodiment 4 of the present utility model, in which a control mainboard is connected to a plurality of motor control modules to control a plurality of two-phase claw-pole stepper motors, and the motor control modules are integrated on the control mainboard;

[0027] Figure 5 This is a principle block diagram of a control system of Embodiment 5 of the present utility model, wherein a control mainboard is connected to a motor control module to control a plurality of two-phase claw-pole stepper motors, and the motor control module is encapsulated with a plurality of motor drive chips corresponding to the two-phase claw-pole stepper motor bodies and integrated on the control mainboard;

[0028] Figure 6 This is a principle block diagram of the control system of the sixth embodiment of the utility model, in which the motor control module is integrated on the control main board, and the motor logic operation drive unit is integrated on the main control MCU;

[0029] Figure 7 This is a principle block diagram of the control system of the seventh embodiment of the utility model, in which the pre-drive unit and the full-bridge drive unit are integrated in the motor drive chip and arranged in the two-phase claw-pole stepper motor body, and the motor logic operation drive unit is integrated in the main control MCU;

[0030] Figure 8 It is a schematic diagram of the connection between the motor drive chip installed in the two-phase claw-pole stepper motor body and the electrical main control module;

[0031] Fig. 9It is a schematic diagram of the current waveform used by the utility model to drive a two-phase claw-pole stepping motor;

[0032] Fig.10 It is a schematic diagram of the structure of a two-phase claw-pole stepper motor body provided with a motor drive chip and a 3PIN terminal for controlling the connection of a main board in the utility model;

[0033] Fig.11 It is a structural schematic diagram of a two-phase claw-pole stepper motor in the utility model in which a motor drive chip is not provided on the body (the motor drive chip is provided on the control main board) and a 4PIN terminal for connecting to the control main board is provided;

[0034] Fig.12 It is a structural schematic diagram of a two-phase claw-pole stepper motor body in the utility model, in which a motor drive chip is provided on the body, and three wires are directly led out for connection with a control main board;

[0035] Fig.13 It is a structural schematic diagram of the utility model in which the two-phase claw-pole stepper motor body is not provided with a motor drive chip, and four wires are directly led out for connection with the control main board;

[0036] Fig.14 It is a schematic diagram of the connection between the motor drive chip control circuit and the two-phase claw-pole stepper motor body coil in the utility model. [Specific implementation method]

[0037] The following is combined with Figure 1-14 The utility model is further described as follows:

[0038] The utility model discloses an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, comprising a control mainboard 1 arranged in the air conditioner indoor unit, the control mainboard 1 is provided with a motor connection terminal 11 and an electrical appliance main control module 12 having a main control MCU 120, the air conditioner indoor unit control system also comprises a two-phase claw-pole stepper motor body 2 and a motor control module 3 having a motor drive chip 30, the motor control module 3 is configured to be used for subdividing the modulated sine wave current output to drive the two-phase claw-pole stepper motor body 2 to work, the output end of the two-phase claw-pole stepper motor body 2 is directly or indirectly connected to the structural moving part of the air conditioner indoor unit to drive the structural moving part to move; the electrical appliance main control module 12 is directly or indirectly electrically connected to the motor control module 3 through a signal end, a ground end and a voltage end; the two-phase claw-pole stepper motor body 2 is connected to the control mainboard 1 through the motor connection terminal 11; the motor control module 3 has a motor logic operation drive unit 31, a pre-drive unit 32 and a full-bridge drive unit 33, such as Fig.14As shown, the motor logic operation drive unit 31 is used to complete the pulse micro-segmentation algorithm and the generation of two-channel orthogonal SPWM wave pulses, as well as monitor and feedback the load current. The pre-drive unit 32 is used to complete the TTL level conversion to the level that can drive the MOS tube gate. The full-bridge drive unit 33 is used to convert the pulse signal into power output. The utility model simplifies the connection wiring between the main control MCU and the motor control module by connecting the motor control module with a motor drive chip through a signal end. That is, the connection line between each two-phase claw-pole stepper motor and the corresponding motor control module is simplified from the original five lines to a minimum of three lines, such as Figure 1 , 3 As shown, the overall production cost is effectively reduced; more importantly, Fig.10 As shown, the motor control module is configured to modulate two orthogonal sine wave current outputs and drive the two-phase claw-pole stepper motor rotor to achieve smooth rotation during the excitation rotation process, and the output torque changes smoothly, so that the two-phase claw-pole stepper motor itself and the structural moving parts driven by it have the characteristics of smooth and silent operation, which effectively solves the problem that the structural moving parts on the air-conditioning indoor unit generate noise during movement and cannot be improved by improving the structural moving parts themselves and their coordination.

[0039] In addition, the two orthogonal sine wave currents obtained after modulation are input to the two-phase claw-pole stepper motor, which effectively passivates the jitter of the rotor driven by rotation in the two-phase claw-pole stepper motor body, makes the rotor of the two-phase claw-pole stepper motor start and stop smoothly, and improves the service life of the gear transmission components on the two-phase claw-pole stepper motor.

[0040] like Figure 3 , 4 As shown in , 5, the air-conditioning indoor unit control system includes a plurality of two-phase claw-pole stepper motor bodies 2, and the output end of each of the two-phase claw-pole stepper motor bodies 2 is correspondingly connected to the structural moving parts of the air-conditioning indoor unit, and the structural moving parts include damper moving parts and wind direction control guide moving parts; each of the two-phase claw-pole stepper motor bodies 2 corresponds to a motor driving chip 30, and the main control MCU 120 is configured to have a corresponding number of signal terminals that are directly or indirectly electrically connected to the corresponding input terminals of the plurality of motor driving chips 30, and the control main board 1 is provided with motor connection terminals 11 matching the number of the two-phase claw-pole stepper motor bodies 2.

[0041] As an embodiment of the present utility model, Figure 2 , 4As shown in , 5 and 6, the motor control module 3 is integrated on the control main board 1 and is located between the electrical main control module 12 and the motor connection terminal 11 connection circuit; the motor control module 3 is electrically connected to the coil winding input end of the two-phase claw-pole stepper motor body 2 through the motor connection terminal 11. Considering the economic cost, voltage fluctuation and electromagnetic compatibility, it is not the best solution.

[0042] As the best embodiment of the present utility model, Figure 1 , 3 As shown, the motor control module 3 is arranged on the two-phase claw-pole stepper motor body 2, and the electrical main control module 12 is electrically connected to the motor connection terminal 11 on the control main board 1 through the signal terminal, the ground terminal and the voltage terminal. With this solution, since the motor control module 3 is arranged on the two-phase claw-pole stepper motor body 2 and is far away from the control main board 1, the wiring of the control main board 1 is simplified, the area is reduced, and distributed control is achieved, which has better stability and system safety, and effectively reduces the overall cost.

[0043] like Figure 6 , 7 As shown in FIG. 1 , as another solution protected by the utility model, the motor logic operation drive unit 31 is integrated into the main control MCU 120 or the electrical main control module 12, while the pre-drive unit 32 and the full-bridge drive unit 33 are integrated into the motor drive chip 30, as shown in FIG. Figure 6 As shown, the motor drive chip 30 is arranged on the control main board 1, and the motor logic operation drive unit 31 is integrated on the main control MCU 120, corresponding to the two-phase claw-pole stepper motor, which is a bare metal and is connected to the control main board 1 through the motor connection terminal 11 of the 4PIN structure; Figure 7 As shown, the motor driving chip 30 is arranged on the two-phase claw-pole stepping motor body 2 and is connected to the control main board 1 through the motor connecting terminal 11 of the 6PIN structure.

[0044] As a two-phase claw-pole stepper motor in the utility model, the two-phase claw-pole stepper motor body 2 includes a motor housing 21, a stator assembly 23 with two coil windings arranged in the motor housing 21, and a rotor assembly 24. The stator assembly 23 is provided with four pins 231 electrically connected to the coil winding wire ends. The two pins on the lower coil frame or the upper coil frame of the stator assembly 23, one of which is the winding starting point and the other is the winding end point, and the winding is distributed in the two coil frames, with a total of two groups of coils; because the distance between the two pins becomes larger, the winding difficulty is reduced, the production process is optimized, the production efficiency and yield rate are improved, and the cost is further reduced.

[0045] like Fig.13 , 14As shown, each pin 231 is electrically connected to the output end of the motor control module 3 via a wire; Fig.11 , 12 As shown, each pin 231 is correspondingly soldered on a PCB 1232 or PCB 2233 , and each pin 231 is indirectly electrically connected to the output end of the motor control module 3 through the PCB 1232 or PCB 2233 .

[0046] like Figure 5 As shown, a plurality of the motor driving chips 30 are packaged into one to form a motor control module 3, and integrated on the control main board 1. The motor control module 3 is configured to have a signal input terminal that matches the number of the two-phase claw-pole stepper motor bodies 2 and is used to directly or indirectly electrically connect to the corresponding signal terminal of the main control MCU 120.

[0047] In order to meet the anti-static requirements, and when the motor logic operation drive unit 31 is arranged on the two-phase claw-pole stepper motor body 2, an anti-static protection circuit is provided at the signal input end between the main control MCU and the motor control module 3, and the anti-static protection circuit includes a resistor and a transient suppression diode.

[0048] like Figure 8 , 9 As shown in Table 1:

[0049] Table 1 shows the 2-2 phase excitation sequence of the two-phase claw-pole stepping motor used in the utility model;

[0050]

[0051] The utility model discloses a method for controlling a two-phase claw-pole stepper motor in an air-conditioning indoor unit. The method adopts the air-conditioning indoor unit control system described above. The motion characteristic data is first analyzed and micro-segmented by a motor logic operation drive unit. Then, two primary SPWM pulse waves in mutually orthogonal modes are generated. The primary SPWM pulse waves are compensated and corrected to obtain a final quasi-SPWM pulse wave. The final quasi-SPWM pulse wave is converted and changed by a pre-drive unit and a full-bridge drive unit to output a sine wave current. The rotor of the two-phase claw-pole stepper motor can achieve stable rotation during the excitation rotation process. The method specifically includes the following steps:

[0052] Step 1: The main control MCU 120 of the air conditioner indoor unit sends motion characteristic data;

[0053] Step 2: The motor logic operation driving unit 31 analyzes and performs micro-segmentation operation on the motion characteristic data. The micro-segmentation operation subdivides the mechanical physical steps of the rotor rotation of the two-phase claw-pole stepping motor. The number of subdivision steps is S, and then: S≥64 steps;

[0054] Step 3, the motor logic operation driving unit 31 generates two primary SPWM pulse waves in orthogonal modes according to the subdivision step number S;

[0055] Step 4: the motor logic operation driving unit 31 compensates and corrects the initial SPWM pulse wave of step 3 to obtain a final SPWM-like pulse wave that enables the rotor of the two-phase claw-pole stepping motor to achieve stable rotation during the excitation rotation process;

[0056] Step 5: the motor logic operation driving unit 31 outputs the final SPWM-like pulse wave to the pre-driving unit 32 for level conversion, converting the TTL level into a level that can drive the gate of the MOS tube;

[0057] Step 6: The pre-driver unit 32 outputs the level pulse capable of driving the gate of the MOS tube to the full-bridge driver unit 33. The full-bridge driver unit 33 converts the level pulse capable of driving the gate of the MOS tube and outputs the driving current to the two coil windings of the two-phase claw-pole stepper motor accordingly.

[0058] The utility model discloses a method for eliminating the movement noise of the structural moving parts of an air-conditioning indoor unit. The method is different from the conventional silencing method for solving the noise or abnormal sound generated by the structural moving parts of the air-conditioning indoor unit during the movement. In the method, the air-conditioning indoor unit applies the air-conditioning indoor unit control system described above, and the two-phase claw-pole stepper motor is configured to drive the movement of the structural moving parts of the air-conditioning indoor unit. The method optimizes the output power characteristics of the two-phase claw-pole stepper motor to make the movement force of the structural moving parts smoothly transition. At a reasonable economic cost, the method achieves a silent effect that cannot be obtained no matter how the structural moving parts themselves and their coordination are improved.

Claims

1. A control system for an indoor unit of an air conditioner based on a two-phase claw-pole stepper motor. Features The invention comprises a control mainboard (1) arranged in an indoor unit of an air conditioner, the control mainboard (1) being provided with a motor connection terminal (11) and an electrical appliance main control module (12) having a main control MCU (120), the control system of the indoor unit of the air conditioner also comprising a two-phase claw-pole stepping motor body (2) and a motor control module (3) having a motor drive chip (30), the motor control module (3) being configured to subdivide and modulate a sine wave current output to drive the two-phase claw-pole stepping motor body (2) to work, the output end of the two-phase claw-pole stepping motor body (2) being directly or indirectly connected to a structural moving part of the indoor unit of the air conditioner to drive the structural moving part to move; The electrical appliance main control module (12) is directly or indirectly electrically connected to the motor control module (3) via a signal terminal, a ground terminal and a voltage terminal; the two-phase claw-pole stepping motor body (2) is connected to the control main board (1) via a motor connection terminal (11); The motor control module (3) comprises a motor logic operation drive unit (31), a pre-drive unit (32) and a full-bridge drive unit (33); the motor logic operation drive unit (31) is used to complete a pulse micro-segmentation algorithm and two-channel orthogonal SPWM wave pulse generation; the pre-drive unit (32) is used to complete TTL level conversion to a level capable of driving a MOS tube gate; and the full-bridge drive unit (33) is used to convert a pulse signal into power output.

2. According to claim 1, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features The air conditioner indoor unit control system comprises a plurality of two-phase claw-pole stepper motor bodies (2), the output end of each of the two-phase claw-pole stepper motor bodies (2) being correspondingly connected to a structural moving part of the air conditioner indoor unit, the structural moving part comprising a damper moving part and a wind direction control guide moving part; each of the two-phase claw-pole stepper motor bodies (2) corresponds to a motor drive chip (30), the main control MCU (120) is configured to have a corresponding number of signal ends which are directly or indirectly electrically connected to corresponding input ends of the plurality of motor drive chips (30), and the control main board (1) is provided with motor connection terminals (11) matching the number of the two-phase claw-pole stepper motor bodies (2).

3. According to claim 2, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features The motor control module (3) is integrated on the control main board (1) and is located between the electrical appliance main control module (12) and the motor connection terminal (11) connection circuit.

4. According to claim 3, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features The motor control module (3) is electrically connected to the coil winding input end of the two-phase claw-pole stepping motor body (2) via the motor connection terminal (11).

5. According to claim 4, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features The two-phase claw-pole stepping motor body (2) comprises a motor housing (21), a stator assembly (23) with two coil windings arranged in the motor housing (21), and a rotor assembly (24); the stator assembly (23) is provided with four pins (231) electrically connected to the coil winding wire ends; each pin (231) is electrically connected to an output end of a motor control module (3) via a wire, or each pin (231) is welded to a PCB1 (232), and each pin (231) is electrically connected to the output end of the motor control module (3) indirectly via the PCB1 (232).

6. According to claim 5, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features A plurality of the motor drive chips (30) are packaged into one to form a motor control module (3), and integrated on a control main board (1); the motor control module (3) is configured to have a signal input terminal that matches the number of the two-phase claw-pole stepper motor bodies (2) and is used to be directly or indirectly electrically connected to a corresponding signal terminal of a main control MCU (120).

7. According to claim 2, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features The motor control module (3) is arranged on a two-phase claw-pole stepping motor body (2), and the electrical main control module (12) is electrically connected to a motor connection terminal (11) on a control main board (1) via a signal terminal, a ground terminal and a voltage terminal.

8. According to claim 7, an air conditioner indoor unit control system based on the use of a two-phase claw-pole stepper motor, Features The two-phase claw-pole stepper motor body (2) comprises a motor housing (21), a stator assembly (23) with two coil windings arranged in the motor housing (21), and a rotor assembly (24); the stator assembly (23) is provided with four pins (231) electrically connected to the coil winding wire ends; each pin (231) is welded to a PCB2 (233) integrated with a motor control module (3), so that the input end of the motor control module (3) can be electrically connected to the motor connection terminal (11) on the control main board (1).

9. An air conditioner indoor unit control system based on a two-phase claw-pole stepper motor according to any one of claims 2 to 8, Features The motor logic operation drive unit (31) is integrated on a main control MCU (120) or an electrical appliance main control module (12).

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