CN111231600A - Compressor control device, compressor and vehicle - Google Patents
Compressor control device, compressor and vehicle Download PDFInfo
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- CN111231600A CN111231600A CN201811437360.2A CN201811437360A CN111231600A CN 111231600 A CN111231600 A CN 111231600A CN 201811437360 A CN201811437360 A CN 201811437360A CN 111231600 A CN111231600 A CN 111231600A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
- B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Abstract
The invention provides a control device of a compressor and a compressor vehicle, wherein the control device of the compressor comprises: a high voltage drive control circuit comprising: the high-voltage direct current circuit is used for providing high-voltage direct current; the high-voltage power supply conversion circuit converts the high-voltage direct current into power supply voltage of a load circuit and/or a load in the high-voltage drive control circuit; the control device of the compressor further includes: the low-voltage drive control circuit is connected with the communication bus to exchange signals with the communication bus; the isolation communication circuit is respectively electrically connected with the low-voltage drive control circuit and the high-voltage drive control circuit so as to realize the signal exchange between the low-voltage drive control circuit and the high-voltage drive control circuit. According to the invention, the high-voltage power supply conversion circuit is arranged in the high-voltage drive control circuit, so that the effect of directly providing power supply voltage for the load circuit and/or the load in the high-voltage drive control circuit is realized, and the high standby power consumption of the low-voltage drive control circuit is avoided.
Description
Technical Field
The invention relates to the field of electric automobile compressors, in particular to a control device of a compressor, the compressor and a vehicle.
Background
The compressor for the vehicle-mounted air conditioning system generally adopts a three-in-one structure of a mechanical part, a rotating motor and a controller, and the controller drives the rotating motor to provide power for the circulating refrigeration of the compressor. The conventional motor drive control technology mainly converts high-voltage direct current into three-phase alternating current through an inverter circuit, and changes the amplitude, frequency and the like of the three-phase alternating current through a microcontroller control algorithm to realize the rotation control of a motor. Usually, the microcontroller communicates with an upper computer of the vehicle-mounted system through an isolation device to realize data interaction. Vehicle-mounted systems usually sample high-speed communication buses such as CAN or LIN, and the traditional isolation devices have low transmission rate, are easy to have the problems of communication response delay, unreliable communication and the like, and influence the system performance. On the basis, a compressor driving control system based on a communication controller is provided, namely data interaction is carried out between a vehicle-mounted system communication bus and a high-speed communication controller, and communication is carried out between the communication controller and a driving microcontroller through an isolating device, so that the communication reliability is ensured. At present, a drive control technology based on a communication controller is used for increasing a vehicle-mounted low-voltage power supply to a required voltage amplitude value through an isolation booster circuit so as to provide a power supply required by a control system for driving a high-voltage side motor. However, in the existing compressor driving control system based on the communication controller, a system driving power supply and a control power supply are formed by converting low-voltage power supplies, and the situations of insufficient driving capability of the controller, high standby power consumption of the low-voltage system and the like may occur, so that the reliability of the control system is affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention proposes a control device for a compressor.
A second aspect of the present invention provides a compressor.
A third aspect of the invention proposes a vehicle.
In view of this, a first aspect of the present invention provides a control apparatus for a compressor, including: a high voltage drive control circuit, comprising: the high-voltage direct-current circuit is used for providing high-voltage direct current; the high-voltage power supply conversion circuit is respectively connected with the high-voltage direct current circuit and converts the high-voltage direct current into power supply voltage of a load circuit and/or a load in the high-voltage drive control circuit; the control device of the compressor further comprises: the low-voltage driving control circuit is connected with the communication bus to exchange signals with the communication bus; and the isolation communication circuit is respectively and electrically connected with the low-voltage drive control circuit and the high-voltage drive control circuit so as to realize the signal exchange between the low-voltage drive control circuit and the high-voltage drive control circuit.
The invention provides a control device of a compressor, which comprises a high-voltage drive control circuit, a low-voltage drive control circuit and an isolation communication circuit, wherein the high-voltage drive control circuit comprises a high-voltage direct current circuit and a high-voltage power supply conversion circuit; meanwhile, the high-voltage power supply conversion circuit is connected with the high-voltage direct current circuit and is used for converting the high-voltage direct current into power supply voltage required by the operation of a load circuit and/or a load in the high-voltage drive control circuit so as to ensure that each load circuit and/or each load in the high-voltage drive control circuit can normally operate; the low-voltage drive control circuit is connected with the communication bus, and the function of exchanging signals between the control device of the compressor and the communication bus can be realized. Meanwhile, an isolation communication circuit is also arranged between the low-voltage drive control circuit and the high-voltage drive control circuit and is respectively and electrically connected with the low-voltage drive control circuit and the high-voltage drive control circuit so as to realize the signal exchange between the low-voltage drive control circuit and the high-voltage drive control circuit, namely the low-voltage drive control circuit and the high-voltage drive control circuit are respectively interacted through the isolation communication circuit; besides data exchange, the isolation communication circuit also isolates high-voltage electricity and low-voltage electricity so as to realize electric isolation of the high-voltage part and the low-voltage part and improve the safety of the whole compressor control device in operation. Compared with the control device of the compressor in the related art, the high-voltage power supply conversion circuit directly converts the high-voltage direct current into the power supply voltage required by the load circuit and/or the load without providing the required voltage to the load circuit and/or the load in the high-voltage drive control circuit through the low-voltage drive control circuit, so that the conditions of higher standby power consumption of the low-voltage drive control circuit and the like are avoided, and the reliability of the control device of the compressor is improved.
It is conceivable that the number of the load circuits and/or loads of the high-voltage driving control circuit may be multiple or single, which is the load circuit and/or load added in the high-voltage driving control circuit according to the actual use requirement, including but not limited to the sampling circuit, the inverter circuit, the first microcontroller, and the like in the high-voltage driving control circuit.
Specifically, the high voltage power conversion circuit may convert the voltage into different voltages according to different requirements of the load circuit and/or the load. For example, the voltage can be converted into different power supply voltages required by various devices such as a driving power supply required by the inverter circuit, the sampling circuit and the first microcontroller. In addition, the power conversion circuit realizes level conversion from a high-voltage power supply to a low-voltage power supply of different levels through a voltage reduction circuit or a linear voltage reduction circuit composed of a power switch tube MOS tube, an inductor, a diode and the like.
In addition, the high-voltage direct-current circuit comprises a direct-current bus film capacitor and a ceramic capacitor with a certain capacitance value, and the direct-current bus ripple voltage and ripple circuits, corresponding protection circuits and the like are reduced. The high-voltage direct-current circuit provides a required high-voltage direct-current power supply for a later-stage device (such as an inverter circuit).
In addition, the control device for the compressor provided by the technical scheme of the invention also has the following additional technical characteristics:
in any one of the above technical solutions, preferably, the high voltage driving control circuit further includes: the inverter circuit is electrically connected with the high-voltage direct current circuit and converts the high-voltage direct current into three-phase alternating current; the inverter circuit is electrically connected with the high-voltage power supply conversion circuit, and the high-voltage power supply conversion circuit provides driving voltage for the inverter circuit.
In the technical scheme, the high-voltage drive control circuit further comprises an inverter circuit, the inverter circuit is electrically connected with the high-voltage direct current circuit, the inverter circuit is used for converting high-voltage direct current into three-phase alternating current, and the three-phase alternating current is connected with the motor; meanwhile, the inverter circuit is electrically connected with the high-voltage power supply conversion circuit, and the high-voltage power supply conversion circuit provides driving voltage for the inverter circuit, so that the inverter circuit can normally operate through the voltage provided by the high-voltage power supply conversion circuit.
Preferably, the inverter circuit may adopt an inverter circuit composed of power switching tubes, such as a three-phase bridge inverter circuit composed of N-type MOS tubes and a three-phase MOS tube driving circuit.
In any one of the above technical solutions, preferably, the high voltage driving control circuit further includes: the sampling circuit is used for acquiring a sampling signal of the high-voltage direct-current circuit and/or acquiring a sampling signal of a load circuit in the high-voltage drive control circuit; the sampling circuit is electrically connected with the high-voltage power supply conversion circuit, and the high-voltage power supply conversion circuit provides power supply voltage for the sampling circuit.
In the technical scheme, the high-voltage driving control circuit further comprises a sampling circuit, wherein the sampling circuit is used for acquiring a sampling signal of the high-voltage direct-current circuit and/or acquiring a sampling signal of a load circuit in the high-voltage driving control circuit, namely the sampling circuit can sample a working state signal of the high-voltage driving control circuit in real time, so that the sampling signal acquired by sampling can be conveniently analyzed subsequently, and the working state of the motor can be acquired.
Conceivably, the sampling circuit may include a high-voltage direct-current bus current sampling circuit composed of a single sampling resistor, and a temperature sampling circuit composed of a thermistor, and the sampling of the high-voltage direct-current bus voltage is realized through a voltage dividing circuit, and corresponding current, voltage and temperature thresholds are set through circuits such as an operational amplifier, and the operation state of the motor is judged. In addition, when the high-voltage driving control circuit further comprises a first microcontroller, the sampling circuit sends the sampling signal to the first microcontroller for control processing.
In any one of the above technical solutions, preferably, the high voltage driving control circuit further includes: the first microcontroller is electrically connected with the sampling circuit, the isolation communication circuit, the inverter circuit and the high-voltage power supply conversion circuit and is used for exchanging signals with the sampling circuit and the inverter circuit and exchanging signals with the isolation communication circuit; the high-voltage power supply conversion circuit provides power supply voltage for the first microcontroller.
In this technical scheme, high pressure drive control circuit still includes first microcontroller, and first microcontroller is connected with sampling circuit, isolation communication circuit and high voltage power supply converting circuit electricity respectively, and first microcontroller is used for carrying out signal exchange with sampling circuit and carries out signal exchange with isolation communication circuit, and first microcontroller still can be connected with inverter circuit electricity, and first microcontroller controls inverter circuit, and then realizes the control to the motor.
Specifically, the first microcontroller receives a control instruction of the isolation communication circuit to drive the motor to rotate, a state signal obtained by sampling of the sampling circuit is used for adjusting a motor drive control algorithm so as to ensure that the control instruction is correctly executed, meanwhile, the running state of the compressor and/or the motor in the compressor is judged according to the obtained state signal, the compressor and/or the motor state instruction in the compressor are uploaded to the isolation communication circuit, and the reliable running of the compressor and/or the motor in the compressor is ensured.
In any one of the above technical solutions, preferably, the low voltage driving control circuit includes: the low-voltage power supply conversion circuit is connected with a low-voltage power supply and converts low-voltage electricity into power supply voltage of a load circuit and/or a load in the low-voltage drive control circuit; the communication circuit is electrically connected with the low-voltage power supply conversion circuit, and the low-voltage power supply conversion circuit provides power supply voltage for the communication circuit; the communication circuit is also electrically connected to the communication bus for signal exchange therewith.
In the technical scheme, the low-voltage drive control circuit comprises a low-voltage power supply conversion circuit and a communication circuit, wherein the low-voltage power supply conversion circuit is connected with a low-voltage power supply and is used for converting low-voltage into power supply voltage of a load circuit and/or a load in the low-voltage drive control circuit so as to ensure normal operation of the load circuit and/or the load in the low-voltage drive control circuit; the communication circuit is electrically connected with the low-voltage power supply conversion circuit, and the low-voltage power supply conversion circuit is also used for providing power supply voltage for the communication circuit; the communication circuit is also electrically connected with the communication bus to exchange signals with the communication bus, and preferably, the communication circuit exchanges data with the communication bus in the vehicle-mounted system to acquire a control instruction of the vehicle-mounted upper computer.
Specifically, the high-voltage driving control circuit state instruction is transmitted to a first microprocessor of the high-voltage driving control circuit through the isolation communication circuit, and the high-voltage driving control circuit state instruction uploaded by the isolation communication circuit is uploaded to a vehicle-mounted upper computer. A communication circuit (e.g., a LIN communication circuit) in data communication with the on-board LIN bus. The low voltage power conversion circuit converts the low voltage side voltage to a level voltage required by each device in the low voltage drive control circuit, which includes but is not limited to a second microprocessor and a communication circuit.
In any one of the above technical solutions, preferably, the low voltage driving control circuit further includes: the second microcontroller is electrically connected with the communication circuit, the low-voltage power supply conversion circuit and the isolation communication circuit and is used for exchanging signals with the communication circuit and exchanging signals with the isolation communication circuit; the low-voltage power supply conversion circuit provides power supply voltage for the second microcontroller.
In the technical scheme, the low-voltage driving control circuit further comprises a second microcontroller, the second microcontroller is electrically connected with the communication circuit, the low-voltage power supply conversion circuit and the isolation communication circuit respectively, the second microcontroller is used for exchanging signals with the communication circuit and exchanging signals with the isolation communication circuit, and the low-voltage power supply conversion circuit provides power supply voltage for the second microcontroller.
Specifically, the isolation communication circuit receives a control instruction of the second microcontroller and sends instruction data to the first microcontroller of the high-voltage driving control circuit. Meanwhile, the isolation communication circuit receives the running state instruction of the high-voltage drive control circuit sent by the first microcontroller and sends the running state instruction to the second microcontroller of the low-voltage drive control circuit. And data exchange between the high-voltage drive control circuit and the low-voltage drive control circuit is realized through the isolation communication circuit. Besides data exchange, the isolation communication circuit also realizes the electrical isolation of the high-voltage part and the low-voltage part, and improves the safety.
In any one of the above technical solutions, preferably, the isolation communication circuit is an optical coupling isolation circuit.
In an embodiment of the second aspect of the present invention, there is provided a compressor comprising the control device of the compressor according to any one of the above technical solutions, and therefore, the compressor comprises all the advantages of the control device of the compressor according to any one of the above technical solutions.
In an embodiment of the third aspect of the present invention, there is provided a vehicle comprising the control device of the compressor according to any one of the above claims or comprising the compressor according to any one of the above claims, and therefore the vehicle comprises all the benefits of the control device of the compressor or the compressor according to any one of the above claims.
In any one of the above technical solutions, preferably, the communication bus is an in-vehicle system communication bus of a vehicle.
In the technical scheme, the communication bus is a vehicle-mounted system communication bus of a vehicle, and CAN be a high-speed communication bus such as a CAN or a LIN.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, 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 is a block diagram illustrating a control apparatus of a compressor according to an embodiment of the present invention.
Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:
the system comprises a high-voltage driving control circuit 1, a high-voltage direct-current circuit 102, a high-voltage power supply conversion circuit 104, an inverter circuit 106, a sampling circuit 108, a first microcontroller 110, a motor 112, a low-voltage driving control circuit 2, a low-voltage power supply conversion circuit 202, a communication circuit 204, a second microcontroller 206, an isolation communication circuit 3 and a communication bus 4.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. 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.
As shown in fig. 1, a first aspect of the present invention provides a control apparatus of a compressor, including: a high voltage drive control circuit 1, comprising: a high voltage dc circuit 102 for providing high voltage dc; the high-voltage power supply conversion circuit 104 is respectively connected with the high-voltage direct current circuit 102, and the high-voltage power supply conversion circuit 104 converts high-voltage direct current into power supply voltage of a load circuit and/or a load in the high-voltage drive control circuit 1; the control device of the compressor further comprises: the low-voltage driving control circuit 2 is connected with the communication bus 4 to exchange signals with the communication bus 4; and the isolation communication circuit 3 is electrically connected with the low-voltage drive control circuit 2 and the high-voltage drive control circuit 1 respectively so as to realize the signal exchange between the low-voltage drive control circuit 2 and the high-voltage drive control circuit 1.
The control device of the compressor comprises a high-voltage drive control circuit 1, a low-voltage drive control circuit 2 and an isolation communication circuit 3, wherein the high-voltage drive control circuit 1 comprises a high-voltage direct current circuit 102 and a high-voltage power supply conversion circuit 104, and the high-voltage direct current circuit 102 is used for providing high-voltage direct current; meanwhile, the high-voltage power conversion circuit 104 is connected with the high-voltage direct current circuit 102, and is used for converting the high-voltage direct current into a power supply voltage required by the operation of a load circuit and/or a load in the high-voltage drive control circuit 1, so as to ensure that each load circuit and/or each load in the high-voltage drive control circuit 1 can normally operate; the low-voltage drive control circuit 2 is connected to the communication bus 4, and can perform the function of exchanging signals between the control device of the compressor and the communication bus 4. Meanwhile, an isolation communication circuit 3 is also arranged between the low-voltage drive control circuit 2 and the high-voltage drive control circuit 1, and the isolation communication circuit 3 is respectively electrically connected with the low-voltage drive control circuit 2 and the high-voltage drive control circuit 1 so as to realize the signal exchange between the low-voltage drive control circuit 2 and the high-voltage drive control circuit 1, namely, the low-voltage drive control circuit 2 and the high-voltage drive control circuit 1 are respectively interacted through the isolation communication circuit 3; besides data exchange, the isolation communication circuit 3 also isolates high-voltage electricity from low-voltage electricity so as to realize electrical isolation of the high-voltage electricity and the low-voltage electricity and improve the safety of the whole compressor control device in operation. Compared with the control device of the compressor in the related art, the invention has the advantages that the high-voltage power supply conversion circuit 104 is arranged in the high-voltage drive control circuit 1, so that the effect of directly providing the power supply voltage for the load circuit and/or the load in the high-voltage drive control circuit 1 is realized, the high-voltage power supply conversion circuit 104 is used for directly converting the high-voltage direct current into the power supply voltage required by the load circuit and/or the load without providing the required voltage for the load circuit and/or the load in the high-voltage drive control circuit 1 through the low-voltage drive control circuit 2, the situations of higher standby power consumption and the like of the low-voltage drive control circuit 2 are avoided, and the reliability of the control device of the compressor is improved.
It is conceivable that the number of the load circuits and/or loads of the high voltage driving control circuit 1 may be multiple or single, which are load circuits and/or loads added in the high voltage driving control circuit 1 according to actual use requirements, including but not limited to the sampling circuit, the inverter circuit 106, the first microcontroller 110, and the like in the high voltage driving control circuit 1.
Specifically, the high voltage power conversion circuit 104 may convert the voltage into different voltages according to different requirements of the load circuit and/or the load. For example, the voltage may be converted to different supply voltages required by various devices such as the driving power supply required by the inverter circuit 106, the sampling circuit, and the first microcontroller 110. In addition, the power conversion circuit realizes level conversion from a high-voltage power supply to a low-voltage power supply of different levels through a voltage reduction circuit or a linear voltage reduction circuit composed of a power switch tube MOS tube, an inductor, a diode and the like.
In addition, the high voltage dc circuit 102 includes a dc bus thin film capacitor and a ceramic capacitor with a certain capacitance value, so as to reduce the ripple voltage of the dc bus and the ripple circuit, and a corresponding protection circuit. The hvdc circuit 102 provides a required high voltage dc power supply for the subsequent devices (e.g., the inverter circuit 106).
In one embodiment provided by the present invention, preferably, the high voltage driving control circuit 1 further includes: the inverter circuit 106 is electrically connected with the high-voltage direct current circuit 102, and the inverter circuit 106 converts high-voltage direct current into three-phase alternating current; the inverter circuit 106 is electrically connected to the high-voltage power conversion circuit 104, and the high-voltage power conversion circuit 104 supplies a driving voltage to the inverter circuit 106.
In this embodiment, the high-voltage driving control circuit 1 further includes an inverter circuit 106, the inverter circuit 106 is electrically connected to the high-voltage dc circuit 102, the inverter circuit 106 is configured to convert the high-voltage dc power into a three-phase ac power, and the three-phase ac power is connected to the motor 112; meanwhile, the inverter circuit 106 is electrically connected to the high-voltage power conversion circuit 104, and the high-voltage power conversion circuit 104 provides a driving voltage for the inverter circuit 106, so that the inverter circuit 106 operates normally by the driving voltage provided by the high-voltage power conversion circuit 104.
Preferably, the inverter circuit 106 may adopt an inverter circuit 106 composed of power switching transistors, such as a three-phase bridge inverter circuit 106 composed of N-type MOS transistors and a three-phase MOS transistor driving circuit.
In one embodiment provided by the present invention, preferably, the high voltage driving control circuit 1 further includes: the sampling circuit 108 is used for acquiring a sampling signal of the high-voltage direct-current circuit 102 and/or acquiring a sampling signal of a load circuit in the high-voltage drive control circuit 1; the sampling circuit 108 is electrically connected to the high voltage power conversion circuit 104, and the high voltage power conversion circuit 104 provides a supply voltage to the sampling circuit 108.
In this embodiment, the high voltage driving control circuit 1 further includes a sampling circuit 108, and the sampling circuit 108 is configured to obtain a sampling signal of the high voltage dc circuit 102 and/or obtain a sampling signal of a load circuit in the high voltage driving control circuit 1, that is, the sampling circuit 108 may sample an operating state signal of the high voltage driving control circuit 1 in real time, so as to analyze the sampling signal obtained by sampling in the following step, so as to obtain an operating state of the motor 112.
Conceivably, the sampling circuit 108 may include a high-voltage dc bus current sampling circuit 108 composed of a single sampling resistor, and a temperature sampling circuit 108 composed of a thermistor, and the sampling of the high-voltage dc bus voltage is realized through a voltage dividing circuit, and the corresponding current, voltage and temperature thresholds are set through circuits such as an operational amplifier, etc., so as to determine the operating state of the motor 112. In addition, when the high voltage driving control circuit 1 further includes the first microcontroller 110, the sampling circuit sends the sampling signal to the first microcontroller 110 for control processing.
In one embodiment provided by the present invention, preferably, the high voltage driving control circuit 1 further includes: the first microcontroller 110 is electrically connected with the sampling circuit 108, the inverter circuit 106, the isolation communication circuit 3 and the high-voltage power conversion circuit 104, and is used for exchanging signals with the sampling circuit 108 and the inverter circuit 106 and exchanging signals with the isolation communication circuit 3; the high voltage power conversion circuit 104 provides a supply voltage to the first microcontroller 110.
In this embodiment, the high-voltage driving control circuit 1 further includes a first microcontroller 110, the first microcontroller 110 is electrically connected to the sampling circuit 108, the inverter circuit 106, the isolation communication circuit 3, and the high-voltage power conversion circuit 104, the first microcontroller 110 is configured to perform signal exchange with the sampling circuit 108 and the inverter circuit 106 and perform signal exchange with the isolation communication circuit 3, the first microcontroller 110 is also electrically connected to the inverter circuit 106, and the first microcontroller 110 controls the inverter circuit 106, so as to control the motor 112.
Specifically, the first microcontroller 110 receives a control instruction of the isolated communication circuit 3 to drive the motor 112 to rotate, and adjusts a driving control algorithm of the motor 112 by sampling a state signal obtained by the sampling circuit 108, so as to ensure correct execution of the control instruction, and at the same time, the operating state of the compressor and/or the motor 112 in the compressor is judged according to the obtained state signal, and the state instruction of the compressor and/or the motor 112 in the compressor is uploaded to the isolated communication circuit 3, so as to ensure reliable operation of the compressor and/or the motor 112 in the compressor.
In one embodiment provided by the present invention, preferably, the low voltage drive control circuit 2 includes: the low-voltage power supply conversion circuit 202 is connected with a low-voltage power supply, and the low-voltage power supply conversion circuit 202 converts low voltage into power supply voltage of a load circuit and/or a load in the low-voltage drive control circuit 2; the communication circuit 204 is electrically connected with the low-voltage power supply conversion circuit 202, and the low-voltage power supply conversion circuit 202 provides power supply voltage for the communication circuit 204; the communication circuit 204 is also electrically connected to the communication bus 4 to exchange signals with the communication bus 4.
In this embodiment, the low voltage driving control circuit 2 includes a low voltage power conversion circuit 202 and a communication circuit 204, the low voltage power conversion circuit 202 is connected to the low voltage power, and the low voltage power conversion circuit 202 is configured to convert the low voltage into a supply voltage of a load circuit and/or a load in the low voltage driving control circuit 2, so as to ensure normal operation of the load circuit and/or the load in the low voltage driving control circuit 2; the communication circuit 204 is electrically connected with the low-voltage power conversion circuit 202, and the low-voltage power conversion circuit 202 is further used for providing power supply voltage for the communication circuit 204; the communication circuit 204 is also electrically connected with the communication bus 4 for signal exchange with the communication bus 4, and preferably, the communication circuit 204 exchanges data with the communication bus 4 in the vehicle-mounted system to obtain a control instruction of the vehicle-mounted upper computer.
Specifically, the state instruction of the high-voltage drive control circuit 1 uploaded by the isolation communication circuit 3 is uploaded to the vehicle-mounted upper computer. The communication circuit 204 (e.g., LIN communication circuit) performs data communication with the on-board LIN bus. The low voltage power conversion circuit 202 converts the low voltage side voltage to a desired level voltage for each device in the low voltage drive control circuit 2, which includes but is not limited to a second microprocessor and communication circuits.
In one embodiment provided by the present invention, preferably, the low voltage driving control circuit 2 further includes: the second microcontroller 206 is electrically connected with the communication circuit 204, the low-voltage power conversion circuit 202 and the isolation communication circuit 3, and is used for exchanging signals with the communication circuit 204 and exchanging signals with the isolation communication circuit 3; the low voltage power conversion circuit 202 provides a supply voltage to the second microcontroller 206.
In this embodiment, the low voltage driving control circuit 2 further includes a second microcontroller 206, the second microcontroller 206 is electrically connected to the communication circuit 204, the low voltage power conversion circuit 202 and the isolation communication circuit 3, the second microcontroller 206 is configured to exchange signals with the communication circuit 204 and exchange signals with the isolation communication circuit 3, and the low voltage power conversion circuit 202 provides a power supply voltage for the second microcontroller 206.
Specifically, the isolation communication circuit 3 receives a control instruction of the second microcontroller 206 and transmits instruction data to the first microcontroller 110 of the high voltage drive control circuit 1. Meanwhile, the isolation communication circuit 3 receives the operation state instruction of the high voltage driving control circuit 1 sent by the first microcontroller 110, and sends the operation state instruction to the second microcontroller 206 of the low voltage driving control circuit 2. Data exchange between the high-voltage drive control circuit 1 and the low-voltage drive control circuit 2 is realized through the isolation communication circuit 3. Besides data exchange, the isolation communication circuit 3 also realizes electrical isolation of the high-voltage part and the low-voltage part, and improves safety.
In one embodiment provided by the present invention, preferably, the isolation communication circuit 3 is an optical coupling isolation circuit.
In an embodiment of the second aspect of the present invention, there is provided a compressor comprising the control device of the compressor as in any one of the above embodiments, and therefore, the compressor comprises all the benefits of the control device of the compressor as in any one of the above embodiments.
In an embodiment of the third aspect of the present invention, there is provided a vehicle comprising the control device of the compressor as in any one of the above embodiments or comprising the compressor as in any one of the above embodiments, and therefore comprising all the benefits of the control device of the compressor or the compressor as in any one of the above embodiments.
In one embodiment provided by the present invention, preferably, the communication bus 4 is an onboard system communication bus 4 of a vehicle.
In this embodiment, the communication bus 4 is an on-board system communication bus 4 of the vehicle, and may be a high-speed communication bus such as CAN or LIN.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (10)
1. A control apparatus of a compressor, characterized by comprising:
a high voltage drive control circuit, comprising:
the high-voltage direct-current circuit is used for providing high-voltage direct current;
the high-voltage power supply conversion circuit is respectively connected with the high-voltage direct current circuit and converts the high-voltage direct current into power supply voltage of a load circuit and/or a load in the high-voltage drive control circuit;
the control device of the compressor further comprises:
the low-voltage driving control circuit is connected with a communication bus to exchange signals with the communication bus;
and the isolation communication circuit is respectively and electrically connected with the low-voltage drive control circuit and the high-voltage drive control circuit so as to realize the signal exchange between the low-voltage drive control circuit and the high-voltage drive control circuit.
2. The control device of a compressor according to claim 1, wherein the high-voltage drive control circuit further comprises:
the inverter circuit is electrically connected with the high-voltage direct current circuit and converts the high-voltage direct current into three-phase alternating current; the inverter circuit is electrically connected with the high-voltage power supply conversion circuit, and the high-voltage power supply conversion circuit provides driving voltage for the inverter circuit.
3. The control device of a compressor according to claim 2, wherein the high-voltage drive control circuit further comprises:
the sampling circuit is used for acquiring a sampling signal of the high-voltage direct current circuit and/or acquiring a sampling signal of a load circuit in the high-voltage drive control circuit;
the sampling circuit is electrically connected with the high-voltage power supply conversion circuit, and the high-voltage power supply conversion circuit provides power supply voltage for the sampling circuit.
4. The control device of a compressor according to claim 3, wherein the high-voltage drive control circuit further comprises:
the first microcontroller is electrically connected with the sampling circuit, the isolation communication circuit, the inverter circuit and the high-voltage power supply conversion circuit and is used for exchanging signals with the sampling circuit and the inverter circuit and exchanging signals with the isolation communication circuit; the high-voltage power supply conversion circuit provides power supply voltage for the first microcontroller.
5. The control device of a compressor according to any one of claims 1 to 4, wherein the low-voltage drive control circuit includes:
the low-voltage power supply conversion circuit is connected with the low-voltage power supply and converts low-voltage electricity into power supply voltage of a load circuit and/or a load in the low-voltage drive control circuit;
the communication circuit is electrically connected with the low-voltage power supply conversion circuit, and the low-voltage power supply conversion circuit provides power supply voltage for the communication circuit;
the communication circuit is also electrically connected with the communication bus for signal exchange with the communication bus.
6. The control device of a compressor according to any one of claims 1 to 4, wherein the low-voltage drive control circuit further comprises:
the second microcontroller is electrically connected with the communication circuit, the low-voltage power supply conversion circuit and the isolation communication circuit and is used for exchanging signals with the communication circuit and exchanging signals with the isolation communication circuit; the low-voltage power supply conversion circuit provides power supply voltage for the second microcontroller.
7. The control device of a compressor according to any one of claims 1 to 4,
the isolation communication circuit is an optical coupling isolation circuit.
8. A compressor, comprising:
a control device of a compressor according to any one of claims 1 to 7.
9. A vehicle, characterized by comprising:
a control device of a compressor according to any one of claims 1 to 7; or
The compressor of claim 8.
10. The vehicle of claim 9,
the communication bus is a vehicle-mounted system communication bus of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437360.2A CN111231600A (en) | 2018-11-28 | 2018-11-28 | Compressor control device, compressor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437360.2A CN111231600A (en) | 2018-11-28 | 2018-11-28 | Compressor control device, compressor and vehicle |
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| Publication Number | Publication Date |
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| CN111231600A true CN111231600A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811437360.2A Pending CN111231600A (en) | 2018-11-28 | 2018-11-28 | Compressor control device, compressor and vehicle |
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| CN (1) | CN111231600A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008043189A (en) * | 2006-07-12 | 2008-02-21 | Matsushita Electric Ind Co Ltd | Inverter apparatus for vehicle |
| CN101689814A (en) * | 2007-06-14 | 2010-03-31 | 三电有限公司 | Electric compressor control device |
| CN204993150U (en) * | 2015-09-30 | 2016-01-20 | 浙江迈雷科技有限公司 | Air conditioner coil pipe fan drive ware |
-
2018
- 2018-11-28 CN CN201811437360.2A patent/CN111231600A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008043189A (en) * | 2006-07-12 | 2008-02-21 | Matsushita Electric Ind Co Ltd | Inverter apparatus for vehicle |
| CN101689814A (en) * | 2007-06-14 | 2010-03-31 | 三电有限公司 | Electric compressor control device |
| CN204993150U (en) * | 2015-09-30 | 2016-01-20 | 浙江迈雷科技有限公司 | Air conditioner coil pipe fan drive ware |
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