CN218976403U - Driving device of motor - Google Patents
Driving device of motor Download PDFInfo
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- CN218976403U CN218976403U CN202222599522.0U CN202222599522U CN218976403U CN 218976403 U CN218976403 U CN 218976403U CN 202222599522 U CN202222599522 U CN 202222599522U CN 218976403 U CN218976403 U CN 218976403U
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- motor
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Abstract
The application discloses a drive arrangement of motor, including power supply (10), uninterrupted power source (20), drive unit (30) and braking unit. Wherein the uninterruptible power supply (20) is connected to the power supply (10), the uninterruptible power supply (20) being configured to output a weak current for a predetermined first time when the power supply (10) is disconnected; the driving unit (30) comprises a power supply module (31) and a motor module (32), wherein the power supply module (31) is connected with the power supply (10) and the uninterrupted power supply (20), the motor module (32) is connected with the power supply module (31), the motor module (32) is used for driving a motor, the motor module (32) is provided with a braking terminal interface, the driving unit (30) is configured to alarm when the power supply (10) is disconnected, and the braking terminal interface has no output; the braking unit is connected with the braking terminal interface and is used for braking the motor (40).
Description
Technical Field
The embodiment of the application relates to the field of motors, in particular to a driving device of a motor.
Background
When the five-axis vertical/horizontal machining center performs machining operation, a rotary workbench such as a swinging workbench is driven by a torque motor, and when the power supply of the torque motor fails and cannot normally supply power, the torque motor does not exert force due to the lack of the power supply, so that the swinging workbench falls uncontrollably under the action of gravity, inertia and the like, and the workpiece, a cutter, a machine tool and the like are damaged.
Disclosure of Invention
The utility model aims to overcome the defect that a workbench falls down due to no force of a motor when a power supply is disconnected in the prior art.
The utility model solves the technical problems by the following technical scheme:
a drive device of a motor, comprising:
a power source;
an uninterruptible power supply connected to the power supply, the uninterruptible power supply configured to output a weak current for a predetermined first time when the power supply is off;
the driving unit comprises a power supply module and a motor module, wherein the power supply module is connected with the power supply and the uninterrupted power supply, the motor module is connected with the power supply module and is used for driving a motor, the motor module is provided with a braking terminal interface, and the driving unit is configured to alarm when the power supply is disconnected, and the braking terminal interface has no output;
and the braking unit is connected with the braking terminal interface and is used for braking the motor.
When the power supply fails and cannot normally supply power, the uninterrupted power supply supplies weak current to the driving unit, and the weak current can be used as a control power supply to control the starting, stopping, speed regulation and the like of the motor. Therefore, when the power supply fails and cannot normally supply power, the motor module normally drives and controls the motor in the braking time under the control voltage provided by the uninterrupted power supply and the action of pre-stored electric energy on the direct current bus of the motor, and the motor continues to exert force to control the workbench, so that the phenomenon that the workbench falls down due to the out-of-control motor before braking is completed is avoided, and further, the property loss and casualties are caused.
Preferably, the braking unit is configured to brake the motor when the braking terminal interface is not output.
When the power supply fails and cannot normally supply power, the braking terminal interface of the motor module does not output, and the braking unit acts to brake the motor, namely when the power supply fails and cannot normally supply power, the braking unit timely brakes the motor according to the braking terminal interface signals, so that braking time is shortened, and the motor stops rotating as soon as possible.
Preferably, the braking unit comprises a relay and an electromagnetic valve, the motor is provided with a brake, the input end of the relay is connected with the braking terminal in an interface mode, the output end of the relay is connected with the input end of the electromagnetic valve, and the output end of the electromagnetic valve is connected with the brake.
Preferably, the relay is configured such that when the brake terminal interface is not output, the relay is turned off, the solenoid valve is de-energized, and the brake is actuated to brake the motor.
Preferably, the solenoid valve is mounted adjacent to the brake.
The solenoid valve is mounted adjacent to the brake, so that the length of the connection line between the solenoid valve and the brake is reduced as much as possible, thereby further reducing the braking time.
Preferably, the electromagnetic valve is a quick response electromagnetic valve, and the action time of the electromagnetic valve is less than 10ms.
The action time of the electromagnetic valve is less than 10ms, so that the electromagnetic valve can quickly respond to the electromagnetic valve, and the braking time of the motor is shortened.
Preferably, the relay is a fast response intermediate relay, and the action time of the relay is less than 10ms.
The action time of the relay is less than 10ms, so that the relay can rapidly respond to the braking terminal interface signal, and the braking time of the motor is shortened.
Preferably, the motor further comprises an energy storage module, wherein the energy storage module is connected with the motor module and is used for maintaining the bus voltage of the motor for a second preset time.
When the power supply fails to cut off, the energy storage module can provide energy for the motor module in a second preset time, and the motor module controls the motor to provide power, so that the motor is prevented from being out of control before braking is completed.
Preferably, the energy storage module is a capacitor module, and the second predetermined time is greater than 300ms.
Preferably, the first predetermined time is greater than 1s.
The utility model has the positive progress effects that: when the power supply fails and cannot normally supply power, the uninterrupted power supply supplies weak current to the driving unit, and the weak current can be used as a control power supply to control the starting, stopping, speed regulation and the like of the motor. Therefore, when the power supply fails and cannot normally supply power, the motor module normally drives and controls the motor in the braking time under the control voltage provided by the uninterrupted power supply and the action of pre-stored electric energy on the direct current bus of the motor, and the motor continues to exert force to control the workbench, so that the phenomenon that the workbench falls down due to the out-of-control motor before braking is completed is avoided, and further, the property loss and the casualties are caused.
Drawings
The following drawings are only for purposes of illustration and explanation of the present application and are not intended to limit the scope of the present application.
FIG. 1 shows a system architecture diagram of a drive device of an embodiment of the present application;
FIG. 2 shows a flow chart of motor braking when the power source of the drive apparatus of the embodiment of the present application is disconnected;
FIG. 3 shows a circuit diagram of a motor braking of a drive apparatus of an embodiment of the present application when the power source is disconnected;
FIG. 4 shows a timing diagram of motor braking when the power source is off in the prior art;
FIG. 5 shows a timing diagram of motor braking when the power source of the drive apparatus of the embodiment of the present application is disconnected;
FIG. 6 shows a flow chart of motor braking when the power source is disconnected in the prior art;
fig. 7 shows a control flow chart of the driving device according to the embodiment of the present application when the power source is normally supplying power.
Reference numerals:
Brake 90
Brake terminal interfaces BR+ and BR-have no output 703
Solenoid valve open 705
The brake acts to brake 706 the motor
Power module non-alarm 712
Brake terminal interfaces BR+ and BR-normal output 713
Relay on 714
Solenoid valve on 715
Brake is not actuated and the motor is operating normally 716
Power supply normal power supply A1
Power failure A2
Motor output B1
Motor no-output B2
Brake terminal interfaces BR+ and BR-normal outputs C1
Brake terminal interfaces BR+ and BR-no output C2
Incomplete braking D1
Braking completion D2
Detailed Description
For a clearer understanding of technical features, objects, and effects of embodiments of the present application, a specific implementation of embodiments of the present application will be described with reference to the accompanying drawings.
In the prior art, a power supply outputs a power voltage (e.g., 380V voltage) to a driving unit to drive a motor. When the power source is suddenly turned off, the brake brakes the motor, but a certain braking time is required from the start of braking to the stop of rotation of the motor (the braking time is the time from the start of the braking to the completion of braking of the motor), wherein the braking time is generally 150 milliseconds. In braking time, due to the disconnection of the power supply, the motor loses power (although the pre-stored electric energy on the direct current bus of the motor can provide power voltage for the motor for a short time after the power supply is disconnected, the motor still cannot operate at the moment due to the lack of control voltage caused by the disconnection of the power supply), and the motor is in a state of no output, namely the motor cannot control the workbench, so that the workbench is out of control and falls under the action of inertia and gravity, accidents are further caused, and property loss and casualties are caused.
The prior art braking process described above will now be described with reference to fig. 4 and 6. Wherein fig. 4 is a timing chart of motor braking when the power supply of the prior art is disconnected, and fig. 6 is a flowchart of motor braking when the power supply of the prior art is disconnected. As shown in fig. 6, in the prior art, a relay 81 is controlled by the numerical control unit 50. When the power supply 10 fails and cannot normally supply power, the numerical control unit 50 controls the relay 81 to be disconnected, the electromagnetic valve 82 is powered off, and the brake 90 acts to brake the motor 40. A certain braking time (typically 150 ms) is required from the start of braking to the completion of braking of the brake 90, and during the braking time, the motor module 32 is powered off due to the lack of the 24V control voltage, so that the motor module 32 cannot control the motor 40, and thus the motor 40 cannot control the workbench without exerting force, and at this time, the brake 90 has not yet completed braking the motor 40 (i.e. the motor 40 has not yet braked), so that the workbench falls under the action of inertia, gravity and the like.
Specifically, as shown in fig. 4, in the prior art, when the power source 32 fails at time t1 and cannot normally supply power, the brake 90 starts to brake the motor 40 at time t2 and completes braking the motor 40 at time t3, wherein the time period from t2 to t3 is the braking time, as shown in fig. 4, and the braking time is 150ms. In the braking time from t2 to t3, the motor module 32 cannot normally drive the motor 40 due to the lack of the 24V control voltage, and the brake 90 has not completed braking the motor 40 (i.e. the motor 40 is not braked), so the workbench falls under the action of inertia, gravity and the like.
In order to overcome the above-mentioned drawbacks, embodiments of the present application provide a driving device for a motor.
Fig. 1 shows a system configuration diagram of a driving device according to an embodiment of the present application. The driving device of the motor of the present embodiment includes a power source 10, an uninterruptible power source 20, a driving unit 30, and a braking unit, wherein the driving unit 30 is used for driving the motor 40, and the braking unit is used for braking the motor 40. As shown in fig. 1, the uninterruptible power supply 20 is connected with the power supply 10, and the driving unit 30 includes a power supply module 31 and a motor module 32, wherein the power supply module 31 is connected with the power supply 10 and the uninterruptible power supply 20, the motor module 32 is connected with the power supply module 31, the motor module 32 has a brake terminal interface, and the brake unit is connected with the brake terminal interface. Wherein the driving unit 30 is configured such that when the power source 10 is turned off, the power source module 31 alarms and the brake terminal interface has no output. The uninterruptible power supply 20 is configured such that, when the power supply 10 supplies power normally, the uninterruptible power supply 20 outputs power output from the power supply 10 directly to the driving unit 30; when the power supply 10 is turned off, the uninterruptible power supply 20 outputs a weak current, such as a 24V control voltage, for a predetermined first time.
In the driving device of the embodiment of the present application, when the power source 10 fails and cannot normally supply power, the uninterruptible power source 20 supplies weak current to the driving unit 30, and the weak current is used as a control power source to control the start, stop, speed regulation, etc. of the motor 40. Therefore, when the power supply 10 fails and cannot normally supply power, the motor module 32 normally drives and controls the motor 40 under the control voltage provided by the uninterruptible power supply 20 and the electric energy pre-stored on the direct current bus of the motor 40, and the motor 40 continues to exert force to control the workbench, so that the situation that the workbench falls down due to the out-of-control of the motor 40 before braking is completed, and property loss and casualties caused by the falling of the workbench are avoided.
Specifically, the braking unit is configured to brake the motor 40 when the brake terminal interface is not output. When the power supply 10 fails and cannot normally supply power, the braking terminal interface of the motor module 32 does not output, and the braking unit acts to brake the motor 40, namely when the power supply 10 fails and cannot normally supply power, the braking unit timely brakes the motor 40 according to the braking terminal interface signal, so that braking time is shortened, and the motor 40 stops rotating as soon as possible.
As shown in fig. 3, the brake unit includes a relay 81 and a solenoid valve 82, the motor 40 has a brake 90, an input end of the relay 81 is connected to a brake terminal interface, an output end of the relay 81 is connected to an input end of the solenoid valve 82, and an output end of the solenoid valve 82 is connected to the brake 90.
Specifically, as shown in fig. 3, the relay 81 is a normally open relay 81, i.e., when the brake terminal interface is not output, the relay 81 is turned off, the solenoid valve 82 is turned off, and the brake 90 is actuated to brake the motor 40.
In one possible embodiment, the solenoid valve 82 is mounted adjacent to the brake 90, thereby minimizing the length of the connection between the solenoid valve 82 and the brake 90, and thus further reducing the braking time.
In one possible embodiment, the solenoid valve 82 is a fast response solenoid valve, and the solenoid valve 82 has an actuation time of less than 10ms; the relay 81 is a fast response intermediate relay, and the action time of the relay 81 is less than 10ms, so that the action time of the electromagnetic valve 82 and the relay 81 is shortened, and the braking time of the motor 40 is shortened.
In one embodiment, the driving device further includes an energy storage module 33, the energy storage module 33 is connected to the motor module 32, and the energy storage module 33 maintains the bus voltage of the motor 40 for a second predetermined time. When the power supply 10 fails and cannot normally supply power, although the electric energy pre-stored in the dc bus of the motor 40 is temporarily used as the power supply of the motor 40, the electric energy pre-stored in the dc bus is less and can only be maintained for a short time, so that the energy pre-stored in the dc bus may be consumed when the motor 40 is not completely braked, and thus when the brake 90 is not completely braked the motor 40, the motor module 32 cannot drive the motor 40 due to losing the power supply, and the workbench is out of control and falls down. Therefore, an energy storage module 33 is further provided, the energy storage module 33 is connected with the motor module 32, and when the power source 10 fails to be disconnected, the energy storage module 33 can provide power for the motor 40 within a second preset time, so that the motor 40 is prevented from being out of control due to the loss of the power source before braking is completed.
Specifically, the energy storage module 33 is a capacitor module, and the second predetermined time is greater than 300ms. The second predetermined time is greater than 300ms, and the braking time of the motor 40 is generally 150ms, and when the power source 10 fails to normally supply power due to a fault, the brake 90 needs to complete braking of the motor 40 for about 150ms, and the normal power supply time of the energy storage module 33 is greater than 300ms, so that the motor 40 normally operates (the motor module 32 cannot drive and control the motor 40 due to lack of the power source) before braking is completed, and the falling risk of the table under the control of the motor 40 does not occur.
Further, the first predetermined time is greater than 1s.
The control process of the driving device of the embodiment of the present application will now be described with reference to fig. 2 to 7.
As shown in fig. 7, the power source 10 in the present embodiment is a 380V power source. When the power supply 10 supplies power normally, the uninterruptible power supply 20 directly outputs 380V voltage provided by the power supply 10 to the power supply module 31, the power supply module 31 processes the 380V voltage to obtain 600V voltage and 24V voltage, and outputs the 600V voltage to the motor module 32, wherein the 600V voltage is used as the power voltage of the motor 40, the 24V voltage is used as the control voltage of the motor 40, and the control voltage is used for controlling start and stop, speed change, control and the like of the motor 40. At this time, the power source 10 supplies power normally, and the energy storage module 33 does not supply power to the driving unit 30. When the power supply 10 supplies power normally, the power module 31 does not give an alarm, the band-type brake terminal interfaces BR+ and BR-output normally, the relay 81 is switched on, the electromagnetic valve 82 is switched on, the brake 90 is opened and braking is not performed, and the motor 40 operates normally.
As shown in fig. 2, when the power supply 10 fails and cannot normally supply power, the ups 20 starts to output 24V to the power module 31, the energy storage module 33 outputs 600V to the motor module 32, and the motor module 32 can normally control and drive the motor 40 under the action of the 24V control voltage and the 600V power voltage. When the power supply 10 fails and cannot normally supply power, the power module 31 alarms, the band-type brake terminal interfaces BR+ and BR-are not output, the relay 81 is disconnected, the electromagnetic valve 82 is powered off, and the brake 90 brakes the motor 40, as shown in fig. 3.
Specifically, as shown in fig. 5, when the power supply 10 fails at time t1 and cannot normally supply power, the brake 90 starts to brake the motor 40 at time t2, and the brake 90 completes braking the motor 40 at time t3, wherein a time period from t2 to t3 is a braking time, and as shown in fig. 5, the braking time is 150ms. In the period from t2 to t3, under the action of the 24V control voltage provided by the uninterruptible power supply 20 and the 600V power voltage provided by the energy storage module 33, the motor module 32 always drives and controls the motor 40 normally until the time t4 (200 ms is elapsed from t2 to t4, which is greater than the braking time), that is, in the period from the failure of the power supply 10 to the completion of braking of the motor 40 (t 1 to t 3), the motor 40 always operates normally, and no runaway occurs, so that the workbench is controlled normally and is prevented from falling.
In the prior art, as shown in fig. 4, when the power supply 10 fails at time t1 and cannot normally supply power, the brake 90 starts to brake the motor 40 at time t2 and completes braking the motor 40 at time t3, wherein the time period from t2 to t3 is the braking time, as shown in fig. 4, and the braking time is 150ms. In the period from t2 to t3, the motor module 32 cannot normally drive the motor 40 due to lack of the 24V control voltage, that is, the motor module 32 cannot control the motor 40 while the power supply 10 is turned off, and the brake does not brake the motor 40, so that the workbench falls under the actions of inertia, gravity and the like.
Therefore, in the driving device of the present application, when the power source 10 fails and cannot normally supply power, the uninterruptible power source 20 is used as a control power source to output a control voltage to the motor module 32, and the energy storage module 33 outputs a 600V power voltage to the motor module 32, so that the motor 40 can still normally operate until the motor 40 brakes when the power source 10 fails and cannot normally supply power, and thus the falling of the workbench is avoided.
It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the scope of the embodiments of the present application. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of the embodiments of this application, and it is intended to be within the scope of the embodiments of this application.
Claims (10)
1. A driving device of a motor, comprising:
a power source (10);
an uninterruptible power supply (20), the uninterruptible power supply (20) being connected to the power supply (10), the uninterruptible power supply (20) being configured to output a weak current for a predetermined first time when the power supply (10) is disconnected;
a driving unit (30) comprising a power supply module (31) and a motor module (32), wherein the power supply module (31) is connected with the power supply (10) and the uninterruptible power supply (20), the motor module (32) is connected with the power supply module (31), the motor module (32) is used for driving a motor, the motor module (32) is provided with a braking terminal interface, and the driving unit (30) is configured such that when the power supply (10) is disconnected, the power supply module (31) alarms, and the braking terminal interface has no output;
and the braking unit is connected with the braking terminal interface and is used for braking the motor (40).
2. The drive device of a motor according to claim 1, wherein the braking unit is configured to brake the motor (40) when the brake terminal interface is not output.
3. A driving device of an electric motor according to claim 1, characterized in that the braking unit comprises a relay (81) and a solenoid valve (82), the electric motor (40) having a brake (90), the input of the relay (81) being connected to the braking terminal interface, the output of the relay (81) being connected to the input of the solenoid valve (82), the output of the solenoid valve (82) being connected to the brake (90).
4. A driving device of a motor according to claim 3, characterized in that the relay (81) is configured such that when the brake terminal interface is not output, the relay (81) is opened, the solenoid valve (82) is de-energized, and the brake (90) is actuated to brake the motor (40).
5. A drive for an electric motor according to claim 3, characterized in that the solenoid valve (82) is mounted in a position adjacent to the brake (90).
6. A driving device of an electric motor according to claim 3, characterized in that the solenoid valve (82) is a fast response solenoid valve, the actuation time of the solenoid valve (82) being less than 10ms.
7. A driving device of an electric motor according to claim 3, characterized in that the relay (81) is a fast response intermediate relay, the actuation time of the relay (81) being less than 10ms.
8. The drive arrangement of an electric machine according to claim 1, further comprising an energy storage module (33), the energy storage module (33) being connected to the electric machine module (32), the energy storage module (33) being adapted to maintain the bus voltage of the electric machine (40) for a second predetermined time.
9. A driving device of an electric machine according to claim 8, characterized in that the energy storage module (33) is a capacitive module, the second predetermined time being greater than 300ms.
10. The drive of an electric motor according to claim 1, wherein the predetermined first time is greater than 1s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222599522.0U CN218976403U (en) | 2022-09-29 | 2022-09-29 | Driving device of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222599522.0U CN218976403U (en) | 2022-09-29 | 2022-09-29 | Driving device of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218976403U true CN218976403U (en) | 2023-05-05 |
Family
ID=86154564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222599522.0U Active CN218976403U (en) | 2022-09-29 | 2022-09-29 | Driving device of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218976403U (en) |
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2022
- 2022-09-29 CN CN202222599522.0U patent/CN218976403U/en active Active
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