CN206041866U - Controller of motor compressor - Google Patents
Controller of motor compressor Download PDFInfo
- Publication number
- CN206041866U CN206041866U CN201620859703.4U CN201620859703U CN206041866U CN 206041866 U CN206041866 U CN 206041866U CN 201620859703 U CN201620859703 U CN 201620859703U CN 206041866 U CN206041866 U CN 206041866U
- Authority
- CN
- China
- Prior art keywords
- controller
- power supply
- current region
- voltage
- inverter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002955 isolation Methods 0.000 claims description 21
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000036039 immunity Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 10
- 238000005070 sampling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
The utility model discloses a controller of motor compressor. Wherein, include: light current is regional, the forceful electric power is regional and keep apart the opto -coupler, wherein, light current regional with the forceful electric power zone passage it connects to keep apart light coupling, the power supply of light current zone passage the low voltage power supply, the power supply of forceful electric power zone passage high voltage power supply, just light current regional with the forceful electric power region is not not altogether. Use the technical scheme of the utility model, forceful electric power, the light current that can realize electronic compressor controller are kept apart completely, each other are influenced, improve reliability of an item, improve the electromagnetism immunity of product, and main control chip will can not receive the electromagnetic interference of motor.
Description
Technical Field
The utility model relates to a controller technical field particularly, relates to a controller of electric compressor.
Background
The electric automobile is rapidly developed under the support of national policies, various large automobile factories also develop the electric automobile with great force, the development prospect is good at present, and in order to pursue the requirement of the comfort of the automobile, the electric compressor is used as an accessory of the electric automobile and has to be greatly developed.
The existing electric compressor controller is generally powered by two power supplies, namely a high-voltage power supply and a low-voltage power supply, which are isolated from each other.
At present, the controllers mainly have two types:
the first is to supply power to the driving and main control chip after the high voltage power supply is reduced by the voltage reduction circuit, and the high voltage is inverted into AC three-phase power through the inverter to supply power to the motor in the electric compressor, the low voltage power supply supplies power to the CAN communication chip and the optical coupling isolation circuit, the starting and speed regulation signals are transmitted through the communication of the optical coupling and the main control chip, and the isolation place of the scheme is to isolate the communication place with the external system.
The second is to output voltage to drive, operational amplifier and main control chip through DC-DC isolation power circuit composed of power chip and isolation transformer. The high-voltage power supply only serves as a bus to perform inversion without other conversion, the main control chip communicates with the automobile air conditioning system through the CAN isolation communication chip and the optocoupler, and the scheme is the same as the first scheme and also performs isolation at the communication position.
The two schemes are isolated at a communication position, and the main control chip and the inverter are not isolated, so that electromagnetic interference generated by the operation of the motor can influence the main control chip, and misoperation is easy to generate. This is because the electric compressor controller is generally a built-in controller, and is likely to cause interference due to coupling formed inside, and because the internal space is limited and sampling by the current sensor is not possible, sampling by the resistance method is only possible, and interference of sampling is likely to occur.
Aiming at the interference problem of the main control chip in the prior art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an in provide a controller of electric compressor to solve main control chip's among the prior art interference problem.
In order to solve the above technical problem, the utility model provides a controller of electric compressor, wherein, include: the device comprises a weak current area, a strong current area and an isolation optocoupler; the weak current region and the strong current region are connected through the isolation optocoupler; the weak current region is powered by a low-voltage power supply, the strong current region is powered by a high-voltage power supply, and the weak current region and the strong current region are not grounded together.
Further, the weak current region includes: the first step-down circuit, the low dropout regulator LDO and the main control chip CPU are connected; the low-voltage power supply supplies power to the CPU through the first voltage reduction circuit and the LDO in sequence.
Further, the strong electric region includes: a second buck circuit, a power drive and an inverter; the isolation optocoupler is used for isolating the signal sent by the CPU to the inverter and the signal sent by the inverter to the CPU.
Further, the high-voltage power supply is connected to the voltage reduction circuit, and supplies power to the grid electrode of the inverter after voltage reduction is carried out through the voltage reduction circuit.
Further, the controller is applied to an electric compressor for a vehicle.
Use the technical scheme of the utility model, forceful electric power, the weak current that can realize the electric compressor controller keep apart, each other do not influence completely, improve the reliability of product, improve the electromagnetic immunity nature of product, main control chip will not receive the electromagnetic interference of motor.
Drawings
Fig. 1 is a schematic structural view of a controller of an electric compressor according to an embodiment of the present invention;
fig. 2 is a detailed structural diagram of a controller of an electric compressor according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.
Fig. 1 is a schematic structural diagram of a controller of an electric compressor according to an embodiment of the present invention, and as shown in fig. 1, the controller includes: the device comprises a weak current area, a strong current area and an isolation optocoupler; the weak current region and the strong current region are connected through an isolation optocoupler; the weak current region is powered by a low-voltage power supply, the strong current region is powered by a high-voltage power supply, and the weak current region and the strong current region are not grounded together, so that the strong current region and the weak current region are completely isolated.
Fig. 2 is a detailed structural schematic diagram of a controller of an electric compressor according to an embodiment of the present invention, and as shown in fig. 2, a weak current region includes: a first voltage reduction circuit, a main control chip CPU, a CAN (Controller Area Network), an LDO (low dropout regulator), and the like, wherein the high voltage region includes: the second step-down circuit, the inverter, the power driver, the sampling chip, etc. And the low-voltage power supply supplies power to the CPU through the first voltage reduction circuit and the LDO in sequence. And the isolation optocoupler is used for isolating the signal sent to the inverter by the CPU and the signal sent to the CPU by the inverter. And the high-voltage power supply is connected to the voltage reduction circuit and supplies power to the grid electrode of the inverter after the voltage is reduced by the voltage reduction circuit. The controller described in this embodiment is mainly applied to the electric compressor for a vehicle.
The low-voltage power supply in the vehicle supplies power to the main control chip, the communication chip, the optical coupler and the like through the voltage reduction circuit and the LDO, the high-voltage power supply in the vehicle supplies power to the high-voltage power supply in the vehicle, and the high-voltage power supply and the communication chip are not in common ground, so that the main control chip and the inverter are completely isolated, namely, the high-voltage power supply and the low-voltage power supply are completely isolated.
The control scheme of the controller realizes the complete isolation of high voltage and low voltage, and can solve the problem of electromagnetic interference generated by the motor on the main control chip and the problem of mutual interference of strong current and weak current power supplies. The control principle mainly comprises the following steps: the high voltage power supply supplies power to the IPM and the isolation drive and isolation sampling circuit through the second step-down circuit, and simultaneously supplies power to the inverter as a bus, the low voltage power supply supplies power to the main control chip and the isolation chip through the first step-down circuit and the LDO, the main control chip adopts phase current and bus voltage (voltage of the high voltage power supply) through the isolation sampling circuit, the pulse width of the six PWM pulses is modulated through SVPWM, the six PWM pulses invert the high voltage power supply through the isolation drive chip drive inverter (IPM or IGBT), and the motor of the three-phase power supply drive electric compressor is obtained after inversion. An external air conditioning system sends start-stop and debugging signals, communication transmission protection signals and the like are carried out through the CAN, and the signals do not need to be isolated and CAN be directly connected through a communication line.
As can be seen from the above description, the present invention mainly solves the following technical problems: 1) the interference problem of the main control chip is solved; 2) the problem of strong current and weak current influence each other is solved. The main advantage of this technical scheme lies in keeping apart, can keep apart main control chip and IMP completely, and the electromagnetic interference that the motor produced after keeping apart will not disturb the main control chip again, and strong and weak electricity keeps apart each other simultaneously, can not interfere with each other.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, the present technical solution is not limited to the structure shown in fig. 2, and various changes and modifications of the above solution by those skilled in the art are also within the scope of the present invention as long as the motor compressor controller is isolated between the driver and the main control chip CPU and is used for supplying power to both strong and weak currents.
Claims (5)
1. A controller of a motor-driven compressor, comprising: the device comprises a weak current area, a strong current area and an isolation optocoupler; wherein,
the weak current region and the strong current region are connected through the isolation optocoupler;
the weak current region is powered by a low-voltage power supply, the strong current region is powered by a high-voltage power supply, and the weak current region and the strong current region are not grounded together.
2. The controller of the motor-driven compressor according to claim 1, wherein the weak current region includes: the first step-down circuit, the low dropout regulator LDO and the main control chip CPU are connected;
the low-voltage power supply supplies power to the CPU through the first voltage reduction circuit and the LDO in sequence.
3. The controller for motor-driven compressor according to claim 2, wherein the strong electric region comprises: a second buck circuit, a power drive and an inverter;
the isolation optocoupler is used for isolating the signal sent by the CPU to the inverter and the signal sent by the inverter to the CPU.
4. The controller of electric compressor according to claim 3,
the high-voltage power supply is connected to the voltage reduction circuit and supplies power to the grid electrode of the inverter after voltage reduction is carried out through the voltage reduction circuit.
5. The controller of the electric compressor according to claim 1, wherein the controller is applied to an electric compressor for a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620859703.4U CN206041866U (en) | 2016-08-09 | 2016-08-09 | Controller of motor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620859703.4U CN206041866U (en) | 2016-08-09 | 2016-08-09 | Controller of motor compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041866U true CN206041866U (en) | 2017-03-22 |
Family
ID=58309253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620859703.4U Expired - Fee Related CN206041866U (en) | 2016-08-09 | 2016-08-09 | Controller of motor compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253790A (en) * | 2016-08-09 | 2016-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of controller of motor compressor |
| CN108873783A (en) * | 2018-07-20 | 2018-11-23 | 北京友信宏科电子科技股份有限公司 | Electric vehicle anti-interference controller |
-
2016
- 2016-08-09 CN CN201620859703.4U patent/CN206041866U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253790A (en) * | 2016-08-09 | 2016-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of controller of motor compressor |
| CN108873783A (en) * | 2018-07-20 | 2018-11-23 | 北京友信宏科电子科技股份有限公司 | Electric vehicle anti-interference controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204557082U (en) | Pure electric vehicle controller power waken system and power supply wake-up circuit | |
| CN200993455Y (en) | Vehicular DC variable frequency air conditioner control circuit | |
| CN102689601A (en) | Integrated control system for new energy vehicles | |
| CN103010035B (en) | For vehicle mounted electric line of force control system that is electronic or motor vehicle driven by mixed power | |
| CN202721450U (en) | Fully controllable energy feedback device | |
| CN103042926B (en) | The trailer guard method of new-energy automobile and realize circuit | |
| CN108068625A (en) | The operation of power electronics during battery communication loss | |
| CN204391871U (en) | A kind of rescue of the vehicle type electric car emergency based on axle power takeoff generator charging vehicle | |
| CN115298056B (en) | Electric vehicle charging controller and electric vehicle charger including the electric vehicle charging controller | |
| CN106549537A (en) | A kind of electron speed regulator, permanent magnet synchronous electric thermomechanical components and unmanned vehicle | |
| CA2792870A1 (en) | Electronic control unit | |
| CN103178590A (en) | Plug-in type battery charging device used for electrically driven vehicle and using method thereof | |
| CN206041866U (en) | Controller of motor compressor | |
| CN104410126B (en) | Electric automobile and vehicle-mounted charger and vehicle-mounted DC/DC integrated systems | |
| CN110103726B (en) | Integrated pure electric vehicle driving controller and control method | |
| CN106253790A (en) | A kind of controller of motor compressor | |
| CN104139706A (en) | Trolley bus and isolation type power supply system thereof | |
| CN204810152U (en) | Vehicle control ware the low voltage power supply's circuit topology structure | |
| CN105529974B (en) | A kind of diesel locomotive auxiliary generator exciter control system and control method | |
| CN203387448U (en) | Multipath soft-start system used for electric vehicle | |
| CN218005908U (en) | Charging topological circuit, cleaning robot base station, cleaning system and cleaning robot | |
| CN113572378B (en) | Energy conversion device for vehicle, system, vehicle and control method | |
| JP2024505399A (en) | electric vehicle charging controller | |
| CN208656677U (en) | Air Condition Compressor for Electric Vehicle PMSM Drive System | |
| CN102931716A (en) | Double-winding driving/isolating voltage transformation and 220VAC charging integrated device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 |