CN207135020U - Motor control assembly, compressor and refrigerator - Google Patents
Motor control assembly, compressor and refrigerator Download PDFInfo
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- CN207135020U CN207135020U CN201720627726.7U CN201720627726U CN207135020U CN 207135020 U CN207135020 U CN 207135020U CN 201720627726 U CN201720627726 U CN 201720627726U CN 207135020 U CN207135020 U CN 207135020U
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- 238000002955 isolation Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 230000010354 integration Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model provides a kind of motor control assembly, compressor and refrigerator.Wherein, a kind of motor control assembly, for compressor, motor control assembly includes：Main core blade unit, driver element, wherein, driver element integrates with main core blade unit, and is connected with the motor of compressor；Main core blade unit, for sending control command to driver element；Driver element, for receiving control command, worked according to control command motor, and fault-signal is fed back to main core blade unit.Pass through the technical solution of the utility model; motor is set to be operated with rotating speed of target; reach and motor is more rationally effectively protected; extend motor service life; importantly, realizing frequency conversion refrigerator master control driving integration, save PCB tabula rasas area, save a switching power circuit; cost is reduced, improves reliability.
Description
Technical Field
The utility model relates to a refrigerator technical field particularly, relates to a motor control device, a compressor, still relates to a refrigerator.
Background
At present, along with the frequency conversion air conditioner becoming the mainstream of the market, a frequency conversion washing machine and a frequency conversion refrigerator also rapidly move to thousands of households, the control scheme of the frequency conversion compressor of the refrigerator is various, wherein one of the control schemes of the frequency conversion compressor is based on sine wave control of a motor control engine, and at present, the control scheme is a mode of separating a main control board from a drive board based on the consideration of after-sale and convenient maintenance of a refrigerator manufacturer. However, as the inverter refrigerator gradually becomes the mainstream of the market in the future, the requirements on cost and reliability are higher and higher, and the market is urgent to provide a motor control device which saves installation space, has low cost and has stronger reliability.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
Therefore, an object of the present invention is to provide a motor control device.
Another object of the present invention is to provide a compressor.
Another object of the present invention is to provide a refrigerator.
In view of this, the utility model provides a motor control device for the compressor, motor control device includes: the compressor comprises a main chip unit and a driving unit, wherein the driving unit and the main chip unit are integrated together and are connected with a motor of the compressor; the main chip unit is used for sending a control command to the driving unit; and the driving unit is used for receiving the control command, driving the motor to work according to the control command and feeding back a fault signal to the main chip unit.
According to the utility model discloses a motor control device, through integrating main chip unit and drive unit into an organic whole board, main chip unit sends control signal to drive unit, drive unit receives main chip unit order, driving motor works, and through drive circuit adjustment motor speed, and judge the trouble, feed back fault signal to main chip unit in real time, make the motor can operate with target rotational speed, reach the more reasonable effectual protection to the motor, extension motor life, more importantly, realize frequency conversion refrigerator master control drive integration, the PCB worn-out fur area has been saved, a switching power supply circuit has been saved, the cost is reduced, and the reliability is improved.
In addition, according to the present invention, the motor control device may further have the following additional features:
in the above technical solution, preferably, the main chip unit includes: the main control chip is used for sending a control command to the driving unit; and the optical coupling isolation chip is connected with the main control chip and the driving unit and is used for isolating the main chip unit from the driving unit.
In this technical scheme, main chip unit includes main control chip and opto-coupler isolation chip, through main control chip and through opto-coupler isolation chip, sends command signal to drive unit to driving motor's operation realizes keeping apart main control part and drive division, effectively avoids direct current high voltage to puncture main control chip, thereby improves security and reliability.
In any one of the above technical solutions, preferably, the driving unit includes: the driving main chip is connected with the optical coupling isolation chip and used for receiving a control command, sampling bus voltage and current of the motor, calculating the rotating speed and position of the motor according to the bus voltage and the current and outputting a PWM control signal to the driving chip; and the driving chip is connected with the driving main chip and used for driving the motor to work according to the control command and adjusting the rotating speed of the motor according to the PWM control signal.
In the technical scheme, the driving unit comprises a driving main chip and a driving chip, the driving main chip receives a command signal sent by the main control chip through an optical coupling isolation chip, the bus voltage and the current of the motor are sampled, the speed information and the position of the motor are calculated, the speed information and the position of the motor are compared with a target command, the difference value between the two is calculated, and therefore a PWM (Pulse Width Modulation) control signal is output to the driving chip to adjust the rotating speed of the motor, the driving chip optionally selects L6390D of ST company, the driving chip is provided with a built-in operational amplifier, and the compressor is driven to rotate by triggering an Insulated Gate Bipolar Transistor (IGBT).
In any one of the above technical solutions, preferably, the motor control device further includes: and the switching power supply circuit is connected with the main chip unit and the driving unit and is used for supplying power to the main chip unit and the driving unit.
In the technical scheme, the switching power supply circuit is connected with the main chip unit and the driving unit, and the direct current is adjusted to a target range through the switching power supply circuit, so that power is supplied to the main chip unit and the driving unit.
In any one of the above technical solutions, preferably, the motor control device further includes: and the rectification filter circuit is connected with the switching power supply circuit and is used for rectifying and filtering the alternating current into direct current.
In the technical scheme, firstly, a power supply rectifies alternating current into stable direct current through a rectifying and filtering circuit, and then the direct current is adjusted to a target range through a switching power supply circuit to obtain a target voltage so as to supply power to a main chip unit and a driving unit.
In any one of the above technical solutions, preferably, the switching power supply circuit includes: the switching power supply IC chip is connected with the rectifying and filtering circuit; the transformer is connected with the switching power supply IC chip and comprises a primary coil, a first secondary coil and a second secondary coil; the three-terminal voltage stabilizer comprises a first three-terminal voltage stabilizer and a second three-terminal voltage stabilizer; the first secondary coil is connected with the first three-terminal voltage regulator; the second secondary coil is connected with a second three-terminal voltage regulator through a wire.
In the technical scheme, the switching power supply IC chip is connected with a transformer, a first secondary coil of the transformer is connected with a first three-terminal regulator, and a second secondary coil of the transformer is connected with a second three-terminal regulator through a wire. The direct current is adjusted to a target range through a switching power supply circuit to supply power for a main chip unit and a driving unit, specifically, a switching power supply IC chip optionally selects VIPER12 of ST company, a three-terminal regulator and optionally 78M05, the high-voltage direct current is adjusted to about 15V through the switching power supply IC chip, then stable 5V and 12V power supply voltage is obtained after transformation through a transformer and the three-terminal regulator, and the main control part and the driving part share the switching power supply circuit.
In any of the above technical solutions, preferably, the voltage provided by the switching power supply circuit includes: 5V, 12V and 15V.
In the technical scheme, high-voltage direct current is regulated to a required voltage range through a switching power supply IC chip, and stable chip working voltages of 5V, 12V and 15V are provided after conversion through a transformer and a three-terminal regulator.
In any of the above technical solutions, preferably, the master chip unit and the driving unit are connected through a synchronous serial bus.
In this solution, the main chip unit communicates with the driving unit via a synchronous serial bus, optionally via I2C, reading related motor parameters from the EEPROM, so that different compressor models can be compatible; in addition, the main control chip passes through I2And C, sending a speed signal through optical coupling isolation to control the motor to work.
In any of the above technical solutions, preferably, the main chip unit further includes: and the relay is connected with the main control chip and used for controlling the on-off of the load.
In the technical scheme, the relay is connected with the main control chip, the main control chip controls the on-off of the relay through the I/O port, and then 5V and 12V related loads are controlled, such as an E2 circuit, an LED, a temperature sensing bulb, a Wifi module, a direct current brushless motor part and the like which are connected with the main control chip.
The utility model discloses still provide a compressor, include the motor control device among the above-mentioned arbitrary technical scheme.
According to the utility model discloses a compressor adopts the motor control device as in above-mentioned arbitrary technical scheme, therefore possesses this motor control device's whole beneficial effect, no longer gives unnecessary details here.
The utility model discloses still provide a refrigerator, include: the motor control device according to any one of the above technical solutions; or comprise a compressor as in the above solutions.
According to the utility model discloses a refrigerator adopts the motor control device among the above-mentioned arbitrary technical scheme, or the compressor among the above-mentioned technical scheme, therefore possesses the whole beneficial effect of this motor control device or compressor, no longer gives unnecessary details here.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic view of a motor control device according to an embodiment of the present invention;
fig. 2 shows a schematic block diagram of a compressor according to an embodiment of the present invention;
fig. 3 shows a schematic block diagram of a refrigerator according to an embodiment of the present invention;
fig. 4 shows a schematic block diagram of a refrigerator according to another embodiment of the present invention.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
the circuit comprises a main chip unit 1, a main control chip 10, an optical coupling isolation chip 12, a relay 14, a driving unit 2, a main driving chip 20, a driving chip 22, a switching power supply 3, a switching power supply IC chip 30, a transformer 32, a three-terminal voltage stabilizer 34 and a rectification filter circuit 4.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A motor control device according to some embodiments of the present invention is described below with reference to fig. 1.
As shown in fig. 1, the utility model provides a motor control device for the compressor, motor control device includes: the compressor comprises a main chip unit 1 and a driving unit 2, wherein the driving unit 2 is integrated with the main chip unit 1 and is connected with a motor of the compressor; a main chip unit 1 for sending a control command to a driving unit 2; and the driving unit 2 is used for receiving the control command, driving the motor to work according to the control command, and feeding back a fault signal to the main chip unit 1.
According to the utility model discloses a motor control device, through integrating main chip unit 1 and drive unit 2 into an organic whole board, main chip unit 1 sends control signal to drive unit 2, drive unit 2 receives main chip unit 1 order, driving motor works, and adjust motor speed through drive circuit, and judge the trouble, feed back fault signal to main chip unit 1 in real time, make the motor can operate with target rotational speed, reach the more reasonable effectual protection to the motor, extension motor life, more importantly, realize frequency conversion refrigerator master control drive integration, PCB worn-out fur area has been saved, a switching power supply circuit 3 has been saved, and therefore, the cost is reduced, and the reliability is improved.
In the above embodiment, preferably, the main chip unit 1 includes: the main control chip 10 is used for sending a control command to the driving unit 2; and the optical coupling isolation chip 12 is connected with the main control chip 10 and the driving unit 2 and is used for isolating the main chip unit 1 from the driving unit 2.
In this embodiment, the main chip unit 1 includes a main control chip 10 and an optical coupling isolation chip 12, and sends a command signal to the driving unit 2 through the main control chip 10 and the optical coupling isolation chip 12 to drive the operation of the motor, so as to realize the isolation of the main control part from the driving part, and effectively prevent the main control chip 10 from being punctured by the direct current high voltage, thereby improving the safety and reliability.
In any of the above embodiments, preferably, the drive unit 2 includes: the driving main chip 20 is connected with the optical coupling isolation chip 12 and used for receiving a control command, sampling bus voltage and current of the motor, calculating the rotating speed and position of the motor according to the bus voltage and the current, and outputting a PWM control signal to the driving chip 22; and a driving chip 22 connected to the driving main chip 20 for driving the motor to operate according to the control command and adjusting the rotation speed of the motor according to the PWM control signal.
In this embodiment, the driving unit 2 includes a driving main chip 20 and a driving chip 22, the driving main chip 20 receives a command signal sent by the main control chip 10 through the optical coupling isolation chip 12, samples a bus voltage and a current of the motor, calculates speed information and a position of the motor, compares the speed information and the position with a target command, calculates a difference between the two, and outputs a PWM (Pulse Width Modulation) control signal to the driving chip 22 to adjust a rotation speed of the motor, the driving chip 22 optionally selects L6390D of ST corporation, which has a built-in operational amplifier, and drives the compressor to rotate by triggering an IGBT (insulated gate Bipolar Transistor).
In any one of the above embodiments, preferably, the motor control device further includes: and the switching power supply circuit 3 is connected with the main chip unit 1 and the driving unit 2 and is used for supplying power to the main chip unit 1 and the driving unit 2.
In this embodiment, the switching power supply circuit 3 is connected to the main chip unit 1 and the driving unit 2, and adjusts the dc power to a target range through the switching power supply circuit 3, thereby supplying power to the main chip unit 1 and the driving unit 2.
In any one of the above embodiments, preferably, the motor control device further includes: and the rectification filter circuit 4 is connected with the switching power supply circuit 3 and is used for rectifying and filtering the alternating current into direct current.
In this embodiment, the power supply first passes through the rectifying and filtering circuit 4 to rectify the ac power into a stable dc power, and then the dc power is adjusted to a target range by the switching power supply circuit 3 to obtain a target voltage, so as to supply power to the main chip unit 1 and the driving unit 2.
In any of the above embodiments, preferably, the switching power supply circuit 3 includes: a switching power supply IC chip 30 connected to the rectifying and filtering circuit 4; a transformer 32 connected to the switching power supply IC chip 30, the transformer 32 including a primary coil, a first secondary coil, and a second secondary coil; a three-terminal regulator 34 including a first three-terminal regulator 34 and a second three-terminal regulator 34; wherein, the first secondary coil is connected with the first three-terminal regulator 34; the second secondary winding is wired to a second three terminal regulator 34.
In this embodiment, the switching power supply IC chip 30 is connected to a transformer 32, a first secondary winding of the transformer 32 is connected to a first three-terminal regulator 34, and a second secondary winding is wired to a second three-terminal regulator 34. The direct current is adjusted to a target range through the switching power supply circuit 3 to supply power to the main chip unit 1 and the driving unit 2, specifically, the switching power supply IC chip 30 optionally selects VIPER12 of ST company, the three-terminal regulator 34 optionally selects 78M05, the high-voltage direct current is adjusted to about 15V through the switching power supply IC chip 30, then stable 5V and 12V power supply voltage is obtained after conversion is carried out through the transformer 32 and the three-terminal regulator 34, and the main control part and the driving part share the switching power supply circuit 3.
In any of the above embodiments, preferably, the voltage supplied by the switching power supply circuit 3 includes: 5V, 12V and 15V.
In this embodiment, the high voltage dc is regulated to a required voltage range by the switching power IC chip 30, and finally converted by the transformer 32 and the three-terminal regulator 34 to provide chip operating voltages of 5V, 12V, and 15V.
In any of the above embodiments, preferably, the main chip unit 1 and the driving unit 2 are connected by a synchronous serial bus.
In this embodiment, the main chip unit 1 communicates with the drive unit 2 via a synchronous serial bus, optionally via I2C, reading related motor parameters from the EEPROM, so that different compressor models can be compatible; in addition, the main control chip 10 passes through I2And C, sending a speed signal through optical coupling isolation to control the motor to work.
In any of the above embodiments, preferably, the main chip unit 1 further includes: and the relay 14 is connected with the main control chip 10 and is used for controlling the on-off of the load.
In this embodiment, the relay 14 is connected to the main control chip 10, and the main control chip 10 controls the on/off of the relay 14 through the I/O port, so as to control 5V and 12V related loads, such as an E2 circuit, an LED, a thermal bulb, a Wifi module, a dc brushless motor part, and the like, connected to the main control chip 10.
As shown in fig. 2, a schematic block diagram of a compressor according to an embodiment of the present invention. The compressor 200 includes a motor control 202 as in any of the embodiments described above.
The utility model provides a compressor 200 adopts motor control device 202 as above-mentioned in any embodiment, therefore possesses this motor control device 202's whole beneficial effect, no longer gives unnecessary details here.
As shown in fig. 3, a schematic block diagram of a refrigerator according to an embodiment of the present invention. The refrigerator 300 includes a motor control device 302 as in any of the above embodiments.
The utility model provides a refrigerator 300, adopt motor control device 302 as in above-mentioned arbitrary embodiment, the device includes the rectification filter circuit part, switching power supply part, the main chip part, the compressor drive division, through integrating main control board and drive plate into an organic whole board, realize frequency conversion refrigerator master control drive integration, the trouble can be judged to the drive plate, and give the main control chip with fault signal feedback, make the motor can operate with target rotational speed, reach the more reasonable effectual protection to the motor, extension motor life, more importantly, PCB worn-out fur area has been saved, a switching power supply circuit has been saved, the cost is reduced, and the reliability is improved.
As shown in fig. 4, a schematic block diagram of a refrigerator according to another embodiment of the present invention. The refrigerator 400 includes a compressor 402 as in the previous embodiments.
The utility model provides a refrigerator 400 adopts the compressor 402 as in above-mentioned embodiment, therefore possesses whole beneficial effects of this compressor 402, no longer gives details here.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A motor control device for a compressor, the motor control device comprising: the compressor comprises a main chip unit and a driving unit, wherein the driving unit is integrated with the main chip unit and is connected with a motor of the compressor;
the main chip unit is used for sending a control command to the driving unit;
and the driving unit is used for receiving the control command, driving the motor to work according to the control command, and feeding back a fault signal to the main chip unit.
2. The motor control device according to claim 1, wherein the main chip unit includes:
the main control chip is used for sending a control command to the driving unit;
and the optical coupling isolation chip is connected with the main control chip and the driving unit and is used for isolating the main chip unit from the driving unit.
3. The motor control device according to claim 2, wherein the drive unit includes:
the driving main chip is connected with the optical coupling isolation chip and used for receiving the control command, sampling bus voltage and current of the motor, calculating the rotating speed and position of the motor according to the bus voltage and the current and outputting a PWM (pulse width modulation) control signal to the driving chip; and
and the driving chip is connected with the driving main chip and used for driving the motor to work according to the control command and adjusting the rotating speed of the motor according to the PWM control signal.
4. The motor control apparatus according to claim 1, further comprising:
and the switching power supply circuit is connected with the main chip unit and the driving unit and is used for supplying power to the main chip unit and the driving unit.
5. The motor control apparatus according to claim 4, characterized by further comprising:
and the rectification filter circuit is connected with the switching power supply circuit and is used for rectifying and filtering the alternating current into direct current.
6. The motor control device according to claim 5, wherein the switching power supply circuit includes:
the switching power supply IC chip is connected with the rectification filter circuit;
the transformer is connected with the switching power supply IC chip and comprises a primary coil, a first secondary coil and a second secondary coil;
the three-terminal voltage stabilizer comprises a first three-terminal voltage stabilizer and a second three-terminal voltage stabilizer; wherein,
the first secondary coil is connected with the first three-terminal voltage regulator;
and the second secondary coil is connected with the second three-terminal regulator through a wire.
7. The motor control apparatus according to claim 4,
the voltage provided by the switching power supply circuit comprises: 5V, 12V and 15V.
8. The motor control device according to any one of claims 1 to 7,
the main chip unit is connected with the driving unit through a synchronous serial bus.
9. The motor control device according to claim 2, wherein the main chip unit further includes:
and the relay is connected with the main control chip and used for controlling the on-off of the load.
10. A compressor, characterized by comprising a motor control device according to any one of claims 1 to 9.
11. A refrigerator, characterized by comprising:
the motor control device according to any one of claims 1 to 9; or
Comprising a compressor as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720627726.7U CN207135020U (en) | 2017-05-31 | 2017-05-31 | Motor control assembly, compressor and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720627726.7U CN207135020U (en) | 2017-05-31 | 2017-05-31 | Motor control assembly, compressor and refrigerator |
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| Publication Number | Publication Date |
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| CN207135020U true CN207135020U (en) | 2018-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720627726.7U Active CN207135020U (en) | 2017-05-31 | 2017-05-31 | Motor control assembly, compressor and refrigerator |
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| CN (1) | CN207135020U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112758A (en) * | 2018-10-12 | 2019-01-01 | 江阴市兆锦机械有限公司 | A kind of servo drive system controller electric machine actuating mechanism |
| CN110596565A (en) * | 2018-06-12 | 2019-12-20 | 佛山市顺德区美的电热电器制造有限公司 | Fault detection method of drive chip, drive chip and main control chip |
-
2017
- 2017-05-31 CN CN201720627726.7U patent/CN207135020U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596565A (en) * | 2018-06-12 | 2019-12-20 | 佛山市顺德区美的电热电器制造有限公司 | Fault detection method of drive chip, drive chip and main control chip |
| CN109112758A (en) * | 2018-10-12 | 2019-01-01 | 江阴市兆锦机械有限公司 | A kind of servo drive system controller electric machine actuating mechanism |
| CN109112758B (en) * | 2018-10-12 | 2023-12-12 | 江阴市兆锦机械有限公司 | Servo drive system controller motor actuating mechanism |
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