Motor control device for lamp

Abstract

The present invention discloses a motor control device for a lamp, comprising: a first power supply component for providing commercial power; a second power supply component for providing stored power; a power supply isolation component for selecting a power supply component with a higher voltage value from the first power supply component and the second power supply component to provide power; a motor driver connected to the power supply isolation component, and a motor connected to the motor driver; a controller connected to the first power supply component, the second power supply component, and the motor driver, respectively; when the controller detects that the first power supply component is powered off, the controller controls the motor driver to drive the motor to slowly brake, so that the first controlled component moves to an initial position, and the first controlled component is used to indicate a component driven by a motor in the lamp. The motor control device of the present invention can switch to the stored power supply at the moment when the motor is powered off, so that the controlled component moves slowly to the initial position, which can effectively prevent the controlled component from falling when the lamp is powered on again.

Description

Technical Field

[0001] The present invention relates to the technical field of lamp control, and in particular to a motor control device of a lamp. Background Art

[0002] At present, the lighting control technology mostly uses stepper motors to realize the functions of automatic focusing, zooming and changing graphics of lighting. Figure 1 As shown, it is a schematic diagram of the optical system structure of an existing lamp, which is composed of an aperture 101, a focusing lens group 102, a zoom lens 103, a light output mirror 104 and other components, wherein the aperture 101, the focusing lens group 102, the zoom lens 103 and the light output mirror 104 are arranged on a transmission mechanism, and the controller drives the transmission mechanism to move by controlling the motor to change the position of the focusing lens in the light path, thereby achieving the function of automatic focusing.

[0003] However, as the number or weight of components in the lamp increases, the components in the lamp become heavier and heavier, so that when the controller suddenly loses power, some components in the lamp will fall due to gravity, causing serious damage. In order to solve this technical problem, Figure 2 As shown, most of the prior art uses an energy-consuming braking method to achieve braking when the motor is powered off. Specifically, a motor brake 210 is provided at one end of the motor shaft 201. When the motor 200 is powered on, the coil 211 in the motor brake 210 is energized, the brake 213 is attracted, and the motor is not braked; when the motor 200 is powered off, the coil 211 in the motor brake 210 is powered off, so that the brake 213 brakes the motor under the action of the spring 212.

[0004] Although the energy consumption braking method used in the prior art can brake the motor when the motor fails or the power is cut off, it has the following technical problems: because the components in the lamp remain in the power-off position when the motor is powered off, the components cannot be retracted into the lamp. For example, when the focusing lens group is exposed outside the lamp, a sudden power outage will make it impossible for the motor to retract the focusing lens group into the lamp, making it impossible to pack the lamp. In addition, when the lamp is powered on again, the controller is in a reset state and the motor brake does not brake the motor. Therefore, when the lamp is powered on again, the components in the lamp will fall due to the uncontrolled motor. Summary of the invention

[0005] In view of the above problems, a motor control device for a lamp of the present invention can switch to stored electric energy for power supply at the moment when the motor is powered off, so that the controlled component moves slowly to the initial position, which can effectively prevent the controlled component from falling when the lamp is powered on again.

[0006] In order to solve the above technical problems, a motor control device for a lamp of the present invention comprises:

[0007] A first power supply component, used for providing mains power;

[0008] A second power supply component, used for providing stored electric energy;

[0009] A power supply isolation component, connected to the first power supply component and the second power supply component respectively, so as to select the power supply component with a higher voltage value between the first power supply component and the second power supply component to provide electric energy;

[0010] A motor driver connected to the power supply isolation component;

[0011] A motor connected to the motor driver;

[0012] a controller connected to the first power supply component, the second power supply component and the motor driver respectively;

[0013] When the controller detects that the first power supply component is powered off, the controller controls the motor driver to drive the motor to slowly brake so that the first controlled component moves to an initial position. The first controlled component is used to indicate a component driven by a motor in the indicator lamp.

[0014] Compared with the prior art, the motor control device of the lamp of the present invention adopts a power supply isolation component to select the power supply component with a higher voltage value from the first power supply component and the second power supply component to provide electrical energy, so that when the voltage provided by the first power supply component is low, the second power supply component can be immediately switched to supply power to the motor driver and the motor. Furthermore, when the controller detects that the first power supply component is powered off, the controller can drive the motor to slowly brake through the motor driver, so that the first controlled component moves to its initial position under the action of its gravity, which is convenient for retracting the first controlled component into the lamp, and can effectively avoid damage to the lamp caused by the first controlled component falling when the lamp is powered on again.

[0015] As an improvement of the above solution, the motor driver has an input end and an output end;

[0016] The input end of the motor driver is connected to the controller, and the output end of the motor driver is connected to the coil of the motor;

[0017] The controller outputs a PWM signal to the input end of the motor driver, so that the motor driver controls the on-off frequency of the coil according to the duty cycle of the PWM signal to achieve slow braking of the motor.

[0018] As an improvement of the above solution, the first power supply component includes:

[0019] A switching power supply having an input terminal and an output terminal;

[0020] A mains power detection component connected between the output end of the switching power supply and the controller;

[0021] The input end of the switching power supply is connected to the mains port, and the output end of the switching power supply is connected to the first input end of the power supply isolation component to provide mains power energy to the power supply isolation component;

[0022] The AC power detection component has a first resistor and a second resistor, the first end of the first resistor is connected to the output end of the switching power supply, the second end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is grounded, and the second end of the first resistor is connected to the controller to provide a voltage signal to the controller.

[0023] As an improvement of the above solution, the motor control device further includes:

[0024] A second controlled component, used to indicate other controlled components in the indicator light except the components driven by the motor;

[0025] The second controlled component is connected to the controller and the power supply isolation component respectively;

[0026] When the controller detects that the voltage signal is less than a preset voltage threshold, the controller controls the second controlled component to standby.

[0027] As an improvement of the above solution, the second power supply component includes:

[0028] A rechargeable battery and a battery output control component connected to the rechargeable battery; wherein,

[0029] The battery output control component includes a first triode and a first PMOS tube;

[0030] The base of the first transistor is connected to the controller via a third resistor, the emitter is grounded, and the collector is connected to the positive electrode of the rechargeable battery via a fourth resistor;

[0031] The gate of the first PMOS tube is connected to the collector of the first transistor, the source is connected to the positive electrode of the rechargeable battery, and the drain is connected to the second input terminal of the power supply isolation component;

[0032] The controller outputs a high level to the base of the first transistor, controls the first transistor and the first PMOS transistor to be turned on, so that the rechargeable battery provides electrical energy to the second input terminal of the power supply isolation component.

[0033] As an improvement of the above solution, the power supply isolation component includes a first diode and a second diode;

[0034] The anode of the first diode is connected to the output end of the first power supply component, the anode of the second diode is connected to the output end of the second power supply component, and the cathode of the first diode is connected to the cathode of the second diode to provide electrical energy.

[0035] As an improvement of the above solution, the second power supply component further includes a battery charging component connected between the first power supply component and the rechargeable battery;

[0036] The battery charging component includes a first buck regulator and a charging isolation circuit connected in sequence; wherein,

[0037] The first step-down regulator is used to step down and stabilize the voltage provided by the first power supply component to obtain a first stable voltage;

[0038] The charging isolation circuit is used to isolate and divide the first stable voltage to provide a unidirectional charging current to the rechargeable battery.

[0039] As an improvement of the above solution, the first buck regulator includes a TD1501 chip; wherein,

[0040] The voltage input terminal of the TD1501 chip is connected to the first power supply component, the switch control terminal and the common ground terminal are both grounded, the output terminal is respectively connected to the negative electrode of the freewheeling diode and one end of the first inductor, the other end of the freewheeling diode is grounded, the other end of the first inductor is grounded through the fifth resistor and the sixth resistor connected in series, and the feedback input terminal is connected to the connection point of the fifth resistor and the sixth resistor.

[0041] As an improvement of the above solution, the motor control device further includes:

[0042] A voltage stabilizing component is connected to the first buck regulator, the rechargeable battery and the controller respectively to supply power to the controller.

[0043] As an improvement of the above solution, the voltage stabilizing component includes:

[0044] a second triode, a third triode, a second PMOS tube, a third buck regulator and a fourth buck regulator; wherein,

[0045] The base of the second triode is connected to the first buck regulator through a seventh resistor, the base of the second triode is also grounded through an eighth resistor, the emitter is grounded, and the collector is connected to the positive electrode of the rechargeable battery through a ninth resistor;

[0046] The base of the third triode is connected to the controller, the emitter is grounded, and the collector is connected to the positive electrode of the rechargeable battery through a ninth resistor;

[0047] The gate of the second PMOS tube is connected to the collector of the third transistor, the source is connected to the positive electrode of the rechargeable battery, and the drain is connected to the input end of the third buck regulator;

[0048] The output end of the third buck regulator is connected to the input end of the fourth buck regulator, and the output end of the fourth buck regulator is connected to the controller;

[0049] The controller outputs a high level to the base of the third transistor, so that the rechargeable battery provides a voltage to the controller after being buck-regulated by the third buck regulator and the fourth buck regulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 The invention is a schematic diagram of the optical system structure of a lamp in the prior art.

[0051] Figure 2 It is a schematic diagram of the layout of the motor brake in the energy-consuming braking method in the prior art.

[0052] Figure 3 It is a structural schematic diagram of a motor control device for a lamp according to Embodiment 1 of the present invention.

[0053] Figure 4 This is a schematic diagram of the connection between a motor driver and a motor in Example 1 of the present invention.

[0054] Figure 5 It is a schematic diagram of the structure of the first power supply component, the second power supply component, the power supply isolation component and the mains power detection component in Example 1 of the present invention.

[0055] Figure 6 It is a schematic diagram of the structure of the battery charging component in Example 1 of the present invention.

[0056] Figure 7 It is a schematic diagram of the structure of the voltage stabilizing component in Example 1 of the present invention. DETAILED DESCRIPTION

[0057] Many specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from the description, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0058] The technical solution of the present invention is clearly and completely described below in conjunction with specific embodiments and drawings.

[0059] Example 1

[0060] like Figure 3FIG. 1 is a schematic diagram of the structure of a motor control device for a lamp according to Embodiment 1 of the present invention.

[0061] The motor control device includes: a first power supply component 1 for providing AC power; a second power supply component 2 for providing stored power; a power supply isolation component 3, respectively connected to the first power supply component 1 and the second power supply component 2, so as to select the power supply component with a higher voltage value in the first power supply component 1 and the second power supply component 2 to provide power; a motor driver 4 respectively connected to the power supply isolation component 3; a motor 5 connected to the motor driver 4; a controller 6 respectively connected to the first power supply component 1, the second power supply component 2 and the motor driver 4; when the controller 6 detects that the first power supply component 1 is powered off, it controls the motor driver 4 to drive the motor 5 to slowly brake, so that the first controlled component moves to the initial position, and the first controlled component is used to indicate the component driven by the motor in the indicator light.

[0062] Compared with the prior art, the motor control device of the lamp of the present invention adopts a power supply isolation component 3 to select the power supply component with a higher voltage value from the first power supply component 1 and the second power supply component 2 to provide electric energy, so that when the voltage provided by the first power supply component 1 is low, the second power supply component 2 can be immediately switched to supply power to the motor driver 4 and the motor 5, so that when the controller 6 detects that the first power supply component 1 is powered off, the controller 6 can drive the motor 5 to slowly brake through the motor driver 4, so that the first controlled component moves to its initial position under the action of its gravity, which is convenient for retracting the first controlled component into the lamp, and can effectively avoid damage to the lamp caused by the first controlled component falling when the lamp is powered on again.

[0063] Among them, the motor driver 4 has an input end and an output end; the input end of the motor driver 4 is connected to the controller 6, and the output end of the motor driver 4 is connected to the coil of the motor 5; the controller 6 outputs a PWM signal to the input end of the motor driver 4, so that the motor driver 4 controls the on-off frequency of the coil according to the duty cycle of the PWM signal to achieve slow braking of the motor 5.

[0064] The following takes the motor driver 4 as an example of the DRV8844 chip to illustrate how the motor driver 4 drives the motor 5 to slowly brake.

[0065] like Figure 4As shown, the controller 6 inputs two groups of PWM signals to the input terminals IN1, IN2, IN3, and IN4 of the DRV8844 chip 41 through the 74HC14D chip 42. The 74HC14D chip 42 controls the on-off frequency of the output terminals OUT1, OUT2, OUT3, and OUT4 according to the duty ratio of the two groups of PWM signals, thereby controlling the on-off frequency of the first coil 51 and the second coil 52 of the motor 5. The motor 5 slowly brakes, so that the first controlled component slowly moves to the initial position under the action of its own gravity.

[0066] Furthermore, if Figure 3 As shown, in order to monitor the electric energy output by the first power supply component 1 , the motor control device further includes: a mains detection component 8 connected between the first power supply component 1 and the controller 6 to provide a voltage signal to the controller 6 .

[0067] Furthermore, if Figure 3 As shown, the motor control device also includes: a second controlled component 9, which is used to indicate other controlled components in the indicator light except the motor-driven components; the second controlled component 9 is respectively connected to the controller 6 and the power supply isolation component 3; when the controller 6 detects that the voltage signal is less than the preset voltage threshold, the second controlled component 9 is controlled to standby, and then when the motor control device of the present invention also includes the second controlled component, the energy consumption of the second power supply component 2 can be effectively reduced.

[0068] Next, combine the attached Figure 1 and attached Figure 5 The first power supply component 1, the second power supply component 2, the power supply isolation component 3 and the mains power detection component 8 are described in detail.

[0069] The first power supply component 1 comprises a switching power supply 11 , an input end of which is connected to a mains port, and an output end of which is connected to a power supply isolation component 3 to provide mains power to the power supply isolation component 3 .

[0070] The AC power detection component 8 has a first resistor R1 and a second resistor R2, the first end of the first resistor R1 is connected to the output end of the switching power supply 11, the second end of the first resistor R1 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is grounded, and the second end of the first resistor R1 is connected to the controller 6 to provide a voltage signal to the controller 6, so that the controller 6 can monitor the voltage signal of the AC power in real time.

[0071] The second power supply component 2 includes a rechargeable battery and a battery output control component 22 connected to the rechargeable battery; wherein the battery output control component 22 includes a first transistor Q1 and a first PMOS transistor P1; the base of the first transistor Q1 is connected to the BAT_LOCK port of the controller 6 through a third resistor R3, the emitter is grounded, and the collector is connected to the positive electrode BAT of the rechargeable battery through a fourth resistor R4; the gate of the first PMOS transistor P1 is connected to the collector of the first transistor Q1, the source is connected to the positive electrode BAT of the rechargeable battery, and the drain is connected to the second input end of the power supply isolation component 3; the controller 6 outputs a high level to the base of the first transistor Q1, controls the first transistor Q1 and the first PMOS transistor P1 to be turned on, so that the rechargeable battery provides electrical energy to the second input end of the power supply isolation component 3. In addition, the drain of the first PMOS transistor P1 is grounded through the first capacitor C1 and the second capacitor C2, respectively, to filter the voltage output by the drain.

[0072] The power supply isolation component 3 includes a first diode D1 and a second diode D2; the anode of the first diode D1 is connected to the output end of the switching power supply 11, the anode of the second diode D2 is connected to the drain of the first PMOS tube P1, and the cathode of the first diode D1 is connected to the cathode of the second diode D2 to provide electrical energy.

[0073] When the AC power interface provides AC power to the switching power supply 11, the voltage value of the AC power energy provided by the switching power supply 11 is greater than the voltage value of the stored power energy provided by the rechargeable battery, the second diode D2 is cut off, and the power supply isolation component 3 uses the switching power supply 11 to provide power; when the switching power supply 11 is disconnected, since the controller 6 outputs a high level through the port BAT_LOCK, the first transistor Q1 and the first PMOS tube P1 are turned on, the second diode D2 is turned on, and the rechargeable battery can immediately provide power to the power supply isolation component 3.

[0074] First resistor R1 second resistor R2 first resistor R1 first resistor R1 second resistor R2 second resistor R2 first resistor R1 Optionally, the second power supply component 2 of the present invention includes a battery charging component connected between the first power supply component 1 and the rechargeable battery; the battery charging component includes a first buck regulator 21 and a charging isolation circuit 22 connected in sequence; wherein the first buck regulator 21 is used to step down and stabilize the voltage provided by the first power supply component 1 to obtain a first stable voltage; the charging isolation circuit 22 is used to isolate and divide the first stable voltage to provide a unidirectional charging current to the rechargeable battery.

[0075] Specifically, Figure 6As shown, the first buck regulator 21 includes a TD1501 chip 211; the voltage input terminal IN of the TD1501 chip 211 is connected to the first power supply component 1, the switch control terminal ON / OFF and the common ground terminal GND are both grounded, and the output terminal OUT is respectively connected to the cathode of the third diode D3 and one end of the first inductor L1, wherein the other end of the third diode D3 is grounded, the other end of the first inductor L1 is grounded through the fifth resistor R5 and the sixth resistor R6 connected in series, and the other end of the first inductor L1 is also grounded through the fifth capacitor C5 and the sixth capacitor C6 connected in parallel to filter the charging voltage, and the feedback input terminal FB of the TD1501 chip 211 is connected to the connection point of the fifth resistor R5 and the sixth resistor R6. Preferably, the third diode D3 is a freewheeling diode.

[0076] When the voltage value obtained by the feedback input terminal FB is greater than the reference voltage of the TD1501 chip 211, the output terminal OUT of the TD1501 chip 211 outputs a low level, and the first buck regulator 21 provides a charging voltage through the first inductor L1; when the voltage value obtained by the feedback input terminal FB is less than the reference voltage of the TD1501 chip 211, the output terminal of the TD1501 chip 211 outputs a high level, so that the first inductor L1 stores electrical energy and provides a charging voltage, thereby achieving voltage reduction and voltage stabilization processing for the voltage output by the first power supply component 1.

[0077] The charging isolation circuit 22 includes a fourth diode D4 , the anode of which is connected to the other end of the first inductor L1 to prevent the charging current from flowing in the reverse direction; the cathode of the fourth diode D4 is also connected to voltage-dividing resistors R11 and R12 to adjust the size of the charging current.

[0078] Furthermore, the motor control device of the present invention further includes: a voltage stabilizing component 11 connected to the first buck regulator 21 , the rechargeable battery 23 and the controller 6 respectively to supply power to the controller 6 .

[0079] Specifically, Figure 7As shown, the voltage stabilizing component 11 includes: a second triode Q2, a third triode Q3, a second PMOS tube P2, a third buck regulator and a fourth buck regulator; wherein, the base of the second triode Q2 is connected to the first buck regulator 21 through the seventh resistor R7, the base of the second triode Q2 is also grounded through the eighth resistor R8, the emitter is grounded, and the collector is connected to the positive electrode BAT of the rechargeable battery 23 through the ninth resistor R9; the base of the third triode Q3 is connected to the controller 6 through the tenth resistor R10, the emitter is grounded, and the collector is connected to the positive electrode BAT of the rechargeable battery 23 through the ninth resistor R9; the gate of the second PMOS tube P2 is connected to the collector of the third triode Q3, the source is connected to the positive electrode BAT of the rechargeable battery 23, and the drain is connected to the input end of the third buck regulator. When the first power supply component 1 provides power, the second transistor Q2 and the second PMOS tube P2 are turned on, and the rechargeable battery is locked to provide power for the controller 6; when the first power supply component 1 is disconnected, since the POWER_LOCK terminal of the controller 6 outputs a high level, the third transistor Q3 and the second PMOS tube P2 are turned on, and the rechargeable battery is still locked to provide power for the controller 6, thereby improving the stability of the power supply to the controller 6.

[0080] Furthermore, the output end of the third buck regulator in the voltage stabilization component is connected to the input end of the fourth buck regulator, and the output end of the fourth buck regulator is connected to the controller 6; the controller 6 outputs a high level to the base of the third transistor Q3, so that the rechargeable battery can provide a suitable voltage to the controller 6 after two buck-stabilization processes by the third buck regulator and the fourth buck regulator.

[0081] Preferably, the third buck regulator includes a TD1509 chip 111, a voltage input terminal IN of the TD1509 chip 111 is connected to the drain of the second PMOS tube P2, the voltage input terminal IN of the TD1509 chip 111 is also grounded through a seventh capacitor C7 and an eighth capacitor C8 connected in parallel, and an output terminal OUT of the TD1509 chip 111 is respectively connected to the cathode of the fifth diode D5 and one end of the second inductor L2, wherein the anode of the fifth diode D5 is grounded, and the other end of the second inductor L2 is grounded through a ninth capacitor C9.

[0082] The fourth buck regulator includes a LM1117 chip 112, wherein an input terminal Vin of the LM1117 chip 112 is connected to the other end of the second inductor L2, the input terminal of the LM1117 chip 112 is also grounded through a tenth capacitor C10 and an eleventh capacitor C11 connected in parallel, an output terminal +Vout of the LM1117 chip 112 is grounded through a twelfth capacitor C12 and a thirteenth capacitor C13 connected in parallel, and an ADJ terminal of the LM1117 chip 112 is grounded.

[0083] Specifically, in the motor control device of the present invention, the controller 6 may be a STM32F107VCT single-chip processing chip.

[0084] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A motor control device for a lamp, characterized in that: include: A first power supply component, used for providing mains power; A second power supply component, used for providing stored electric energy; A power supply isolation component, connected to the first power supply component and the second power supply component respectively, so as to select the power supply component with a higher voltage value between the first power supply component and the second power supply component to provide electric energy; A motor driver connected to the power supply isolation component; A motor connected to the motor driver; A controller connected to the first power supply component, the second power supply component and the motor driver respectively; When the controller detects that the first power supply component is powered off, the controller controls the motor driver to drive the motor to brake slowly, so that the first controlled component moves to the initial position under the action of gravity, so as to facilitate the first controlled component to be retracted into the lamp and avoid the lamp being damaged due to the first controlled component falling when the lamp is powered on again; The first controlled component is used to indicate a component in the indicator lamp that is driven by a motor; The motor driver has an input terminal and an output terminal; The input end of the motor driver is connected to the controller, and the output end of the motor driver is connected to the coil of the motor; The controller outputs a PWM signal to the input end of the motor driver, so that the motor driver controls the on-off frequency of the coil according to the duty cycle of the PWM signal to achieve slow braking of the motor.

2. The motor control device according to claim 1, characterized in that: The first power supply component comprises: A switching power supply having an input terminal and an output terminal; A mains power detection component connected between the output end of the switching power supply and the controller; The input end of the switching power supply is connected to the mains port, and the output end of the switching power supply is connected to the first input end of the power supply isolation component to provide mains power energy to the power supply isolation component; The AC power detection component has a first resistor and a second resistor, the first end of the first resistor is connected to the output end of the switching power supply, the second end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is grounded, and the second end of the first resistor is connected to the controller to provide a voltage signal to the controller.

3. The motor control device according to claim 2, characterized in that: Also includes: A second controlled component, used to indicate other controlled components in the indicator light except the components driven by the motor; The second controlled component is connected to the controller and the power supply isolation component respectively; When the controller detects that the voltage signal is less than a preset voltage threshold, the controller controls the second controlled component to standby.

4. The motor control device according to claim 1, characterized in that: The second power supply component comprises: A rechargeable battery and a battery output control component connected to the rechargeable battery; wherein, The battery output control component includes a first triode and a first PMOS tube; The base of the first transistor is connected to the controller via a third resistor, the emitter is grounded, and the collector is connected to the positive electrode of the rechargeable battery via a fourth resistor; The gate of the first PMOS tube is connected to the collector of the first transistor, the source is connected to the positive electrode of the rechargeable battery, and the drain is connected to the second input terminal of the power supply isolation component; The controller outputs a high level to the base of the first transistor, controls the first transistor and the first PMOS transistor to be turned on, so that the rechargeable battery provides electrical energy to the second input terminal of the power supply isolation component.

5. The motor control device according to claim 1, characterized in that: The power supply isolation component includes a first diode and a second diode; The anode of the first diode is connected to the output end of the first power supply component, the anode of the second diode is connected to the output end of the second power supply component, and the cathode of the first diode is connected to the cathode of the second diode to provide electrical energy.

6. The motor control device according to claim 4, characterized in that: The second power supply component further includes a battery charging component connected between the first power supply component and the rechargeable battery; The battery charging component includes a first buck regulator and a charging isolation circuit connected in sequence; wherein, The first step-down regulator is used to step down and stabilize the voltage provided by the first power supply component to obtain a first stable voltage; The charging isolation circuit is used to isolate and divide the first stable voltage to provide a unidirectional charging current to the rechargeable battery.

7. The motor control device according to claim 6, characterized in that: The first buck regulator includes a TD1501 chip; wherein, The voltage input terminal of the TD1501 chip is connected to the first power supply component, the switch control terminal and the common ground terminal are both grounded, the output terminal is respectively connected to the negative electrode of the freewheeling diode and one end of the first inductor, the other end of the freewheeling diode is grounded, the other end of the first inductor is grounded through the fifth resistor and the sixth resistor connected in series, and the feedback input terminal is connected to the connection point of the fifth resistor and the sixth resistor.

8. The motor control device according to claim 6, characterized in that: Also includes: A voltage stabilizing component is connected to the first buck regulator, the rechargeable battery and the controller respectively to supply power to the controller.

9. The motor control device according to claim 8, characterized in that: The voltage stabilizing component comprises: a second triode, a third triode, a second PMOS tube, a third buck regulator and a fourth buck regulator; wherein, The base of the second triode is connected to the first buck regulator through a seventh resistor, the base of the second triode is also grounded through an eighth resistor, the emitter is grounded, and the collector is connected to the positive electrode of the rechargeable battery through a ninth resistor; The base of the third triode is connected to the controller, the emitter is grounded, and the collector is connected to the positive electrode of the rechargeable battery through a ninth resistor; The gate of the second PMOS tube is connected to the collector of the third transistor, the source is connected to the positive electrode of the rechargeable battery, and the drain is connected to the input end of the third buck regulator; The output end of the third buck regulator is connected to the input end of the fourth buck regulator, and the output end of the fourth buck regulator is connected to the controller; The controller outputs a high level to the base of the third transistor, so that the rechargeable battery provides a voltage to the controller after being buck-regulated by the third buck regulator and the fourth buck regulator.

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