Motor driving circuit and motor driving equipment

Abstract

The utility model discloses a motor driving circuit and a motor driving device, the motor driving circuit at least comprises a control module, driving modules and an execution module, a modulation pin of the control module is connected with modulation pins of a plurality of driving modules, a first output pin of each driving module is connected with a first input pin of the execution module, and a second output pin of each driving module is connected with a second input pin of the execution module. A second output pin of the driving module is connected with a second input pin of the execution module, and a third output pin of the driving module is connected with an output pin of the execution module. Large-area copper laying is carried out on the PCB to assist heat dissipation, and in the aspect of control, an accurate and smooth pure chord current vector control technology is adopted, so that heating of the motor can be effectively reduced, the overall temperature rise of the driver is reduced to an extremely low level, and fan-free stable operation of the driver is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a motor drive circuit and a motor drive device. Background Art

[0002] At present, 86 stepper motor drivers are mostly driven by plug-in MOS tubes, which are large in size and occupy a lot of PCB space. Figure 1 As shown, the 86 stepper motor driver is large in size, and the MOS tube itself generates a lot of heat, often requiring an external cooling fan and aluminum alloy cooling fins for forced heat dissipation, making the originally bloated body even more cumbersome. How to reduce the size of the motor driver is an urgent problem that needs to be solved. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a motor drive circuit and a motor drive device.

[0004] In a first aspect, the utility model provides a motor drive circuit, the motor drive circuit at least comprising: a control module, a drive module and an execution module, wherein the control module is connected to the execution module through the drive module;

[0005] The modulation pin of the control module is connected to the modulation pins of the plurality of driving modules, the first output pin of the driving module is connected to the first input pin of the execution module, the second output pin of the driving module is connected to the second input pin of the execution module, and the third output pin of the driving module is connected to the output pin of the execution module.

[0006] Optionally, the driving module is an IR2104S driving chip.

[0007] Optionally, the execution module at least includes a first resistor, a second resistor and a MOS tube.

[0008] Optionally, the MOS tube is HGD200N10.

[0009] Optionally, the first PWM pin of the control module is connected to the second pin of the first driving module;

[0010] The second PWM pin of the control module is connected to the second pin of the second driving module;

[0011] The third PWM pin of the control module is connected to the second pin of the third driving module;

[0012] The fourth PWM pin of the control module is connected to the second pin of the fourth driving module.

[0013] Optionally, the seventh pin of the first driving module is connected to the first pin of the first MOS tube;

[0014] The seventh pin of the second driving module is connected to the first pin of the second MOS tube;

[0015] The seventh pin of the third driving module is connected to the first pin of the third MOS tube;

[0016] The seventh pin of the fourth driving module is connected to the first pin of the fourth MOS tube.

[0017] Optionally, the fifth pin of the first driving module is connected to the first pin of the fifth MOS tube;

[0018] The fifth pin of the second driving module is connected to the first pin of the sixth MOS tube;

[0019] The fifth pin of the third driving module is connected to the first pin of the seventh MOS tube;

[0020] The fifth pin of the fourth driving module is connected to the first pin of the eighth MOS tube.

[0021] Optionally, the third pin of the first MOS tube is connected to the second pin of the fifth MOS tube; the third pin of the first MOS tube is connected to the sixth pin of the first driving module;

[0022] The third pin of the second MOS tube is connected to the second pin of the sixth MOS tube; the third pin of the second MOS tube is connected to the sixth pin of the second driving module;

[0023] The third pin of the third MOS tube is connected to the second pin of the seventh MOS tube; the third pin of the third MOS tube is connected to the sixth pin of the third driving module;

[0024] The third pin of the fourth MOS tube is connected to the second pin of the eighth MOS tube; the third pin of the fourth MOS tube is connected to the sixth pin of the fourth driving module.

[0025] In a second aspect, the utility model further provides a motor driving device, comprising the motor driving circuit described in the first aspect.

[0026] Optionally, the motor drive device further comprises a drive housing, the motor drive circuit is located inside the drive housing, and the drive housing is not equipped with an external cooling fan.

[0027] The utility model provides a motor drive circuit and a motor drive device, wherein the motor drive circuit at least includes: a control module, a drive module and an execution module, wherein the control module is connected to the execution module through the drive module; the modulation pin of the control module is connected to the modulation pins of multiple drive modules, the first output pin of the drive module is connected to the first input pin of the execution module, the second output pin of the drive module is connected to the second input pin of the execution module, and the third output pin of the drive module is connected to the output pin of the execution module. The embodiment of the present application adopts an execution module of a low-resistance and small-volume patch to reduce the heat generation of the execution module, and heats the heat by closely adhering to the metal shell through thermal conductive glue, and a large area of ​​copper plating on the PCB is used to assist in heat dissipation. In terms of control, the precise and smooth pure sinusoidal current vector control technology is adopted, which can effectively reduce the heat generation of the motor, reduce the overall temperature rise of the driver to an extremely low level, and realize the fanless and stable operation of the driver. Thus, the external fan is cancelled, thereby achieving the purpose of reducing the volume, so that it can adapt to a smaller installation space and improve the competitiveness of customer products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a motor driver in the prior art;

[0029] Figure 2 A schematic diagram of the structure of a motor drive circuit provided by an embodiment of the utility model;

[0030] Figure 3 A circuit diagram of a motor drive circuit provided by an embodiment of the utility model;

[0031] Figure 4 A schematic diagram of the structure of a motor drive device provided in an embodiment of the utility model;

[0032] Figure 5 A schematic diagram showing the appearance comparison of a motor drive device provided in an embodiment of the utility model;

[0033] Figure 6 This is a schematic diagram of the appearance of a motor drive circuit provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] See also Figure 2, the utility model provides a circuit diagram of a motor driving circuit, the motor driving circuit at least comprises: a control module 101, a driving module 102 and an execution module 103, wherein the control module 101 is connected to the execution module 103 through the driving module 102;

[0036] The modulation pin of the control module 101 is connected to the modulation pins of multiple driving modules 102, the first output pin of the driving module 102 is connected to the first input pin of the execution module 103, the second output pin of the driving module 102 is connected to the second input pin of the execution module 103, and the third output pin of the driving module 102 is connected to the output pin of the execution module 103.

[0037] like Figure 3 As shown, optionally, the driving module is an IR2104S driving chip.

[0038] Optionally, the execution module at least includes a first resistor, a second resistor and a MOS tube.

[0039] Optionally, the MOS tube is HGD200N10.

[0040] The use of low-resistance and small-volume SMD MOS tubes reduces the heat generation of the MOS tubes. The MOS tubes are closely attached to the metal shell through thermal conductive glue to dissipate heat, and the PCB is copper-plated over a large area to assist in heat dissipation. In terms of control, the use of precise and smooth pure sinusoidal current vector control technology can effectively reduce the heat generation of the motor and reduce the overall temperature rise of the driver to an extremely low level, achieving fanless and stable operation of the driver. Thus, the external fan is eliminated, thereby achieving the purpose of reducing the volume. This can adapt to a smaller installation space and improve the competitiveness of customer products.

[0041] Compared with the prior art solutions, the beneficial effects of the embodiments of the present application are as follows: the external cooling fan is eliminated, the drive volume is reduced, and the production cost is reduced; low-resistance and small-volume surface-mount MOS tubes are adopted, which reduces the production difficulty, improves the yield rate, and effectively saves costs; small volume, large current, AC and DC compatibility, and strong product competitiveness;

[0042] Optionally, the first PWM pin of the control module is connected to the second pin of the first driving module;

[0043] The second PWM pin of the control module is connected to the second pin of the second driving module;

[0044] The third PWM pin of the control module is connected to the second pin of the third driving module;

[0045] The fourth PWM pin of the control module is connected to the second pin of the fourth driving module.

[0046] Optionally, the seventh pin of the first driving module is connected to the first pin of the first MOS tube;

[0047] The seventh pin of the second driving module is connected to the first pin of the second MOS tube;

[0048] The seventh pin of the third driving module is connected to the first pin of the third MOS tube;

[0049] The seventh pin of the fourth driving module is connected to the first pin of the fourth MOS tube.

[0050] Optionally, the fifth pin of the first driving module is connected to the first pin of the fifth MOS tube;

[0051] The fifth pin of the second driving module is connected to the first pin of the sixth MOS tube;

[0052] The fifth pin of the third driving module is connected to the first pin of the seventh MOS tube;

[0053] The fifth pin of the fourth driving module is connected to the first pin of the eighth MOS tube.

[0054] Optionally, the third pin of the first MOS tube is connected to the second pin of the fifth MOS tube; the third pin of the first MOS tube is connected to the sixth pin of the first driving module;

[0055] The third pin of the second MOS tube is connected to the second pin of the sixth MOS tube; the third pin of the second MOS tube is connected to the sixth pin of the second driving module;

[0056] The third pin of the third MOS tube is connected to the second pin of the seventh MOS tube; the third pin of the third MOS tube is connected to the sixth pin of the third driving module;

[0057] The third pin of the fourth MOS tube is connected to the second pin of the eighth MOS tube; the third pin of the fourth MOS tube is connected to the sixth pin of the fourth driving module.

[0058] The embodiment of the present application reduces the volume of the 86 stepper motor open-loop driver while ensuring good heat dissipation of the 86 stepper motor open-loop driver body, thereby ensuring the stable operation of the 86 stepper motor open-loop driver. The patented driver has a driving voltage of AC20-80V, an output peak current of less than 7.2A, and integrates the MODBUS-RTU standard protocol specification. Users can set multiple parameters such as any subdivision within 200-40000 and working mode through the host computer debugging software, which greatly enriches the practical functions of the product, can meet the application needs of most occasions, and can completely replace the conventional 86 stepper driver.

[0059] The utility model also provides a motor driving device, comprising the above-mentioned motor driving circuit.

[0060] like Figure 5 As shown, the motor drive device also includes a drive housing, the motor drive circuit is located inside the drive housing, and the drive housing is not equipped with an external cooling fan.

[0061] The small-volume, high-current digital two-phase 86 stepper motor driver provided in the embodiment of the present application can well solve the problem of small installation space and has good heat dissipation, thereby effectively improving the competitiveness of equipment manufacturers.

[0062] like Figure 6 As shown, the driving voltage range of the driver provided in the embodiment of the present application is AC20V~80V, and it is suitable for two-phase hybrid stepper motors with a peak current below 7.2A and an outer diameter of 57~110mm. The MODBUS-RTU standard protocol specification is integrated, and users can set any subdivision within 200-40000 and working mode and other parameters through the host computer debugging software, which greatly enriches the practical functions of the product. The driver adopts a servo-like control principle, and combines vector control technology, built-in micro-segmentation technology, and adaptive filtering technology to greatly optimize the performance of the stepper motor. The precise and smooth pure sinusoidal current vector control technology effectively reduces the heat generation of the motor. It is produced using low-resistance MOS chips to effectively control temperature rise and eliminate the cooling fan to achieve the purpose of reducing volume. It can effectively improve the competitiveness of the product when used in small space installation scenarios. The size structure is such as Figure 4 shown.

[0063] The utility model provides a motor drive circuit and a motor drive device, wherein the motor drive circuit at least includes: a control module, a drive module and an execution module, wherein the control module is connected to the execution module through the drive module; the modulation pin of the control module is connected to the modulation pins of multiple drive modules, the first output pin of the drive module is connected to the first input pin of the execution module, the second output pin of the drive module is connected to the second input pin of the execution module, and the third output pin of the drive module is connected to the output pin of the execution module. The embodiment of the present application adopts an execution module with a low-resistance and small-volume patch to reduce the heat generation of the execution module, and dissipates heat by closely adhering to the metal shell through thermal conductive glue, and PCB is copper-plated over a large area to assist in heat dissipation. In terms of control, precise and smooth pure sinusoidal current vector control technology is adopted, which can effectively reduce the heat generation of the motor, reduce the overall temperature rise of the driver to an extremely low level, and realize fanless and stable operation of the driver. Thus, the external fan is eliminated, thereby achieving the purpose of reducing the volume, so that it can adapt to a smaller installation space and improve the competitiveness of customer products.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motor drive circuit, characterized in that: The motor driving circuit at least includes: a control module, a driving module and an execution module, wherein the control module is connected to the execution module through the driving module; The modulation pin of the control module is connected to the modulation pins of the plurality of driving modules, the first output pin of the driving module is connected to the first input pin of the execution module, the second output pin of the driving module is connected to the second input pin of the execution module, and the third output pin of the driving module is connected to the output pin of the execution module.

2. The motor drive circuit according to claim 1, characterized in that: The driving module is an IR2104S driving chip.

3. The motor drive circuit according to claim 1, characterized in that: The execution module at least includes a first resistor, a second resistor and a MOS tube.

4. The motor drive circuit according to claim 3, characterized in that: The MOS tube is HGD200N10.

5. The motor drive circuit according to claim 1, characterized in that: The first PWM pin of the control module is connected to the second pin of the first driving module; The second PWM pin of the control module is connected to the second pin of the second driving module; The third PWM pin of the control module is connected to the second pin of the third driving module; The fourth PWM pin of the control module is connected to the second pin of the fourth driving module.

6. The motor drive circuit according to claim 5, characterized in that: The seventh pin of the first driving module is connected to the first pin of the first MOS tube; The seventh pin of the second driving module is connected to the first pin of the second MOS tube; The seventh pin of the third driving module is connected to the first pin of the third MOS tube; The seventh pin of the fourth driving module is connected to the first pin of the fourth MOS tube.

7. The motor drive circuit according to claim 6, characterized in that: The fifth pin of the first driving module is connected to the first pin of the fifth MOS tube; The fifth pin of the second driving module is connected to the first pin of the sixth MOS tube; The fifth pin of the third driving module is connected to the first pin of the seventh MOS tube; The fifth pin of the fourth driving module is connected to the first pin of the eighth MOS tube.

8. The motor drive circuit according to claim 7, characterized in that: The third pin of the first MOS tube is connected to the second pin of the fifth MOS tube; the third pin of the first MOS tube is connected to the sixth pin of the first driving module; The third pin of the second MOS tube is connected to the second pin of the sixth MOS tube; the third pin of the second MOS tube is connected to the sixth pin of the second driving module; The third pin of the third MOS tube is connected to the second pin of the seventh MOS tube; the third pin of the third MOS tube is connected to the sixth pin of the third driving module; The third pin of the fourth MOS tube is connected to the second pin of the eighth MOS tube; the third pin of the fourth MOS tube is connected to the sixth pin of the fourth driving module.

9. A motor drive device, characterized in that: Comprising the motor drive circuit as described in any one of claims 1-8.

10. The motor drive device according to claim 9, characterized in that: The motor drive device further comprises a drive housing, the motor drive circuit is located inside the drive housing, and the drive housing is not equipped with an external cooling fan.

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