CN110901337B - Two-in-one drive protection method, system, device and storage medium - Google Patents

Two-in-one drive protection method, system, device and storage medium Download PDF

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Publication number
CN110901337B
CN110901337B CN201911189302.7A CN201911189302A CN110901337B CN 110901337 B CN110901337 B CN 110901337B CN 201911189302 A CN201911189302 A CN 201911189302A CN 110901337 B CN110901337 B CN 110901337B
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communication message
communication
power supply
direct current
air conditioner
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CN110901337A (en
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文海深
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Shenzhen Inovance Technology Co Ltd
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Shenzhen Inovance Technology Co Ltd
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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
    • 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
    • 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
    • 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
    • B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3222—Cooling devices using compression characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a protection method, a system, equipment and a storage medium of a two-in-one driver, which are applied to an automobile air conditioner, wherein the automobile air conditioner comprises the two-in-one driver and an air conditioner controller, the two-in-one driver comprises a frequency converter for driving a compressor to operate and a direct current-to-direct current power supply for supplying power to a fan, and the method comprises the following steps: the method comprises the steps that after the direct-current-to-direct-current power supply is started, a first communication message is sent to the communication bus according to a first preset period, and the first communication message comprises the running state of the direct-current-to-direct-current power supply; the frequency converter receives the first communication message from the communication bus, and stops outputting the driving voltage to the compressor when the running state in the received first communication message is a fault. According to the embodiment of the invention, the compressor can be stopped without an external air conditioner controller, and the excessive pressure of the refrigerant in the air conditioner pipeline is avoided.

Description

Two-in-one drive protection method, system, device and storage medium
Technical Field
The embodiment of the invention relates to the field of two-in-one drives, in particular to a two-in-one drive protection method, a system, equipment and a storage medium.
Background
Under the conditions of current global petroleum energy shortage and serious environmental pollution, the new energy automobile becomes an important development direction in the automobile industry in all countries of the world by virtue of the advantages of energy conservation, small environmental pollution, low noise, simple structure, easy control, easy maintenance and the like.
The air conditioning system of the new energy automobile comprises a frequency converter for driving a compressor and a direct current-to-direct current (DC-DC) power supply for driving a fan (comprising an evaporation fan and a condensation fan), wherein the frequency converter and the direct current-to-direct current power supply are respectively controlled by a controller to operate, and when the controller detects that the direct current-to-direct current power supply or the frequency converter fails, the frequency converter and the direct current-to-direct current power supply are controlled to stop operating.
Because the fault detection of the direct current-to-direct current power supply and the frequency converter depends on the controller, under some special conditions, the controller can not detect the two states in real time, so that the condition that the air conditioner is in the operation of the compressor but the fan is not in operation exists, the pipeline pressure of the air conditioner is too high, the pressure release valve acts, and the air conditioner is damaged.
Disclosure of Invention
The embodiment of the invention provides a two-in-one driver protection method, a system, equipment and a storage medium, aiming at the problems that the pipeline of an air conditioning system has high pressure and causes the risk of damaging an air conditioner.
The technical scheme for solving the technical problems in the embodiment of the invention is that a two-in-one driver protection method is provided and applied to an automobile air conditioner, the automobile air conditioner comprises a two-in-one driver and an air conditioner controller, the two-in-one driver comprises a frequency converter for driving a compressor to operate and a direct current-to-direct current power supply for supplying power to a fan, and the frequency converter, the direct current-to-direct current power supply and the air conditioner controller are respectively connected to a communication bus, and the method comprises the following steps:
the method comprises the steps that after the direct-current-to-direct-current power supply is started, a first communication message is sent to the communication bus according to a first preset period, and the first communication message comprises the running state of the direct-current-to-direct-current power supply;
the frequency converter receives the first communication message from the communication bus, and stops outputting the driving voltage to the compressor when the running state in the received first communication message is a fault.
Preferably, the method further comprises; and stopping outputting the driving voltage to the compressor when the frequency converter does not receive the first communication message within a first preset time period after starting or within a first preset time period in the running process, wherein the first preset time period is longer than or equal to the first preset period.
Preferably, the method further comprises:
the frequency converter sends a second communication message to the communication bus according to a second preset period after being started, and the second communication message comprises the running state of the frequency converter;
the air conditioner controller receives the first communication message and the second communication message from the communication bus, and sends a third communication message and a fourth communication message containing an operation stopping instruction to the communication bus when the operation state in the received first communication message is a fault or the operation state in the received second communication message is a fault;
when the direct current-to-direct current power supply receives a third communication message containing an operation stopping instruction, stopping outputting a power supply voltage to the fan;
and when the frequency converter receives a fourth communication message containing an operation stopping instruction, stopping outputting the power supply voltage to the compressor.
Preferably, the method further comprises:
the frequency converter sends a second communication message to the communication bus according to a second preset period after being started, and the second communication message comprises the running state of the frequency converter;
and the direct current-to-direct current power supply receives the second communication message from the communication bus, and stops outputting the driving voltage to the fan when the running state in the received second communication message is a fault.
Preferably, the method further comprises: and stopping outputting the driving voltage to the fan when the direct current-to-direct current power supply does not receive the second communication message within a second preset time period after starting or within a second preset time period in the running process, wherein the second preset time period is longer than or equal to the second preset period.
The embodiment of the invention also provides a two-in-one driver protection system which is applied to an automobile air conditioner, wherein the automobile air conditioner comprises a two-in-one driver and an air conditioner controller, the two-in-one driver comprises a frequency converter for driving a compressor to operate and a direct current-to-direct current power supply for supplying power to a fan, the air conditioner controller is connected to a communication bus, the system comprises a first control unit and a first communication unit which are positioned on the direct current-to-direct current power supply, and a second control unit and a second communication unit which are positioned on the frequency converter, and the first communication unit and the second communication unit are respectively connected to the communication bus, wherein:
after the direct current-to-direct current power supply is started, the first control unit sends a first communication message to the communication bus through the first communication unit according to a first preset period, wherein the first communication message comprises the running state of the direct current-to-direct current power supply;
and the second control unit receives the first communication message from the communication bus through the second communication unit after the frequency converter is started, and controls the frequency converter to stop outputting the driving voltage to the compressor when the running state in the received first communication message is a fault.
Preferably, the second control unit further controls the frequency converter to stop outputting the driving voltage to the compressor when the first communication message is not received within a first preset time period after the frequency converter is started or within a first preset time period in the operation process, and the first preset time period is longer than or equal to the first preset period.
Preferably, the second control unit further sends a second communication message to the communication bus according to a second preset period after the frequency converter is started, and the second communication message includes an operation state of the frequency converter;
the air conditioner controller comprises a third control unit and a third communication unit, and the third communication unit is connected to the communication bus; the third control unit receives the first communication message and the second communication message from the communication bus through the third communication unit, and sends a third communication message and a fourth communication message containing a stop instruction to the communication bus when the received running state of the first communication message is a fault or the received running state of the second communication message is a fault;
when the first communication unit receives a third communication message containing a stop instruction, the first control unit controls the direct current-to-direct current power supply to stop outputting power supply voltage to the fan;
and the second control unit controls the frequency converter to stop outputting the power supply voltage to the compressor when the second communication unit receives a fourth communication message containing a stop instruction.
The embodiment of the invention also provides a two-in-one driver protection device, which comprises a memory and a processor, wherein the memory stores a computer program which can run on the processor, and the processor realizes the steps of the two-in-one driver protection method when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the two-in-one drive protection method are realized.
According to the two-in-one driver protection method, system, equipment and storage medium, the frequency converter directly reads the first communication message in the communication bus to obtain the state of the direct current to direct current power supply, and when the running state in the first communication message is a fault, the output of the driving voltage to the compressor is stopped, so that the compressor can be stopped without an external air conditioner controller, and the excessive pressure of a refrigerant in an air conditioner pipeline is avoided.
Drawings
FIG. 1 is a schematic diagram of an application environment of a two-in-one driver protection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a two-in-one driver protection method according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a two-in-one driver protection method according to a second embodiment of the present invention;
fig. 4 is a schematic control logic diagram of an air conditioner in a start-up stage in a two-in-one driver protection method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of control logic in an air conditioner operation process in the two-in-one driver protection method according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of a two-in-one driver protection method according to a third embodiment of the present invention;
FIG. 7 is a schematic diagram of a two-in-one drive protection system according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a two-in-one driver protection device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 2 is a schematic flow chart of a two-in-one driver protection method according to an embodiment of the present invention, and the method can be applied to an automotive air conditioner, and in combination with fig. 1, the automotive air conditioner includes a two-in-one driver 11, an air conditioner controller 12 and an air conditioner panel 13. In the above-mentioned vehicle air conditioner, the two-in-one driver 11 includes a direct current-to-direct current (DC-DC) power source 111 and a frequency converter 112, and supplies power to the fan (evaporation fan and condensation fan) through the DC-to-DC power source 111, and drives the compressor to operate through the frequency converter 112, and the DC-to-DC power source 111, the frequency converter 112, the air conditioner controller 12 and the air conditioner panel 13 are respectively connected to the communication bus. Of course, in practical application, the method can also be applied to other air conditioners with similar structures (i.e. the compressor and the fan are driven by two-in-one drivers respectively).
The method of the present embodiment may be integrated into the two-in-one driver, and includes the following steps:
step S21: the dc-dc power supply 111 sends a first communication message to the communication bus according to a first preset period after being started, where the first communication message includes an operation state of the dc-dc power supply 111. For example, when the dc-dc power supply 111 is operating normally (i.e. outputting the power supply voltage to the fan normally), the operating status in the first communication message is normal (e.g. the corresponding field of the operating status is 1), such as 0-t in fig. 5 1 A time period; when the dc-dc power supply 111 is abnormal (for example, the fan is locked, and the dc-dc power supply 111 does not output the power supply voltage), the operation status in the first communication message is a fault (for example, the field corresponding to the operation status is 0), such as the time period t1-t2 in fig. 5.
The dc-dc power supply 111 has a communication module therein, and sends a communication message to the communication bus through the communication module, and receives and parses the message from the communication bus. Specifically, the air conditioning panel 13 may issue an air conditioning start command according to an input signal (for example, a touch signal from a key or a touch screen on the air conditioning panel 13), and after the air conditioning controller 12 detects the start command on the communication bus, it parses and issues a corresponding command to the dc-dc power supply 111 and the frequency converter 112. The dc-to-dc power supply 111 may start operation (i.e., output a supply voltage to the blower) or stop operation (i.e., stop outputting a supply voltage to the blower) according to an operation instruction (from the air conditioner controller 12) received from the communication bus.
Step S22: the frequency converter 112 receives the first communication message from the communication bus in real time after being started, and stops outputting the driving voltage to the compressor when the operation state in the received first communication message is a fault (for example, a field corresponding to the operation state in the first communication message is 0), thereby stopping the operation of the compressor.
The frequency converter 112 has a communication module therein, and sends a communication message to the communication bus through the communication module, and receives and parses the message from the communication bus. The inverter 112 may initiate operation (i.e., output a supply voltage to the compressor) or cease operation (i.e., cease outputting a supply voltage to the compressor) based on an operation command received from the communication bus (e.g., from the air conditioner controller 12).
The above steps S21 and S22 are independent of each other and are always performed during the operation of the air conditioner. In the two-in-one driver protection method, the frequency converter 112 directly reads the first communication message (generated by the direct current-to-direct current power supply 111) in the communication bus to obtain the running state of the direct current-to-direct current power supply 111, and stops outputting the driving voltage to the compressor when the running state in the first communication message is a fault, so that the compressor can be stopped without passing through the external air conditioner controller 12, the excessive pressure of the refrigerant in the air conditioner pipeline is avoided, and the service life of the air conditioner is prolonged.
Fig. 3 is a schematic flow chart of a two-in-one driver protection method according to another embodiment of the present invention, and the method can be applied to the vehicle air conditioner shown in fig. 1. The method of the present embodiment includes the steps of:
step S31: after the dc-dc power supply 111 is started (for example, according to an instruction received from the communication bus and sent by the air conditioner controller 12), a first communication message is sent to the communication bus according to a first preset period, and the first communication message includes an operation state of the dc-dc power supply 111.
Step S32: and when the frequency converter 112 does not receive the first communication message within a first preset time period after starting or within a first preset time period in the running process, executing step S34, otherwise executing step S33. The first preset time period is greater than or equal to a first preset period.
Specifically, as shown in connection with fig. 4, after the frequency converter 112 is started (i.e., t 1 Time of day) and begin to count when the counted time reaches a first predetermined length of time (e.g., t in fig. 4) 2 Time, duration is t 2 -t 1 ) And when the first communication message sent by the direct current-to-direct current power supply 111 is received, the step S34 is executed if the first communication message is not received, otherwise the step S33 is executed, and the timing is restarted after the control counter is cleared.
Step S33: the frequency converter 112 parses the received first communication message, and determines whether the dc-dc power supply 111 is faulty according to the running state in the first communication message (for example, whether the field corresponding to the running state in the first communication message is 0). As shown in fig. 5, during the operation of the inverter 112 and the dc-dc power supply 111, if at t 1 -t 2 At any time in between, the running state in the first communication message is a fault (for example, the field corresponding to the running state in the first communication message is 0), and step S34 is executed, otherwise, step S32 is returned.
Step S34: the inverter 112 stops outputting the driving voltage to the compressor, thereby stopping the operation of the compressor.
Compared with the embodiment shown in fig. 2, the method of the embodiment not only stops the operation of the compressor when the dc-dc power supply 111 fails, but also stops the operation of the compressor when the communication between the dc-dc power supply 111 and the frequency converter 112 is interrupted, thereby further improving the safety.
As shown in fig. 6, in addition to the steps S31-S34, the two-in-one driver protection method according to another embodiment of the present invention may further include the following steps:
step S61: the frequency converter 112 sends a second communication message to the communication bus according to a second preset period after being started, and the second communication message includesThe running state of the frequency converter. For example, when the inverter 112 is operating normally (i.e. outputting the power supply voltage to the compressor normally), the operating state in the second communication message is normal (e.g. the corresponding field of the operating state is 1), such as 0-t in fig. 5 2 A time period; when the inverter 112 is abnormal (e.g., the compressor is not operating), the operation status in the second communication message is a fault (e.g., the field corresponding to the operation status is 0), such as the period of time after t2 in fig. 5. The second preset period may be the same as the first preset period.
Step S62: and when the dc-dc power supply 111 does not receive the second communication message within a second preset time period after the start or within a second preset time period during the operation, executing step S64, otherwise executing step S63. The second preset time length is greater than or equal to a second preset period.
Step S63: the dc-dc power supply 111 analyzes the received second communication message, and determines whether the frequency converter 112 fails according to the running state in the second communication message (for example, whether the field corresponding to the running state in the second communication message is 0).
Step S64: the dc-dc power supply 111 stops outputting the driving voltage to the blower fan, and stops the blower fan.
Through the steps S61-S64, the dc-dc power supply 111 directly reads the second communication message (generated by the frequency converter 112) in the communication bus to obtain the operation state of the frequency converter 112, and stops outputting the driving voltage to the fan when the operation state in the second communication message is a fault, so that the fan can be stopped without passing through the external air conditioner controller 12, the response speed is improved, and the energy consumption can be saved when the two-in-one driver and the air conditioner controller 12 are abnormal in communication.
In addition, in other embodiments of the present invention, the two-in-one driver protection method can also control the operation of the dc-dc power supply 111 and the inverter 112 through the air conditioner controller 12. Specifically, after the dc-dc power supply 111 and the inverter 112 are started (according to the operation command from the air conditioner controller 12), the air conditioner controller 12 sends a first communication message and a second communication message to the communication bus according to a first preset period and a second preset period, respectively, and when the operation state in the received first communication message is a fault or the operation state in the received second communication message is a fault, the air conditioner controller 12 sends a third communication message (the destination address of the third communication message is the dc-dc power supply 111) and a fourth communication message (the destination address of the fourth communication message is the inverter 112) containing an operation stop command to the communication bus. The dc-dc power supply 111 stops outputting the power supply voltage to the fan when receiving the third communication message including the operation stop instruction, and the inverter 112 stops outputting the power supply voltage to the compressor when receiving the fourth communication message including the operation stop instruction.
As shown in fig. 7, the embodiment of the invention further provides a two-in-one driver protection system, which can be applied to an automotive air conditioner, wherein the automotive air conditioner comprises two-in-one drivers and an air conditioner controller, the two-in-one drivers are respectively connected to a communication bus, and each two-in-one driver comprises a frequency converter for driving a compressor to operate and a direct current-to-direct current power supply for supplying power to a fan. The two-in-one driver system of the present embodiment includes a first control unit 71, a first communication unit 72, a second control unit 73 and a second communication unit 74, wherein the first control unit 71, the first communication unit 72 are located at a dc-dc power supply, the second control unit 73 and the second communication unit 74 are located at a frequency converter, and the first communication unit 72 and the second communication unit 74 are respectively connected to a communication bus. The first control unit 71 and the second control unit 73 may be configured by combining software running on the dc-dc power supply and the inverter hardware.
After the dc-dc power is started, the first control unit 71 sends a first communication message to the communication bus through the first communication unit 72 according to a first preset period, where the first communication message includes an operation state of the dc-dc power. For example, when the dc-dc power supply is running normally (i.e. the power supply voltage is output to the fan normally), the running state in the first communication message is normal (for example, the field corresponding to the running state is 1); when the dc-dc power supply is abnormal (for example, the fan is locked, and the dc-dc power supply does not output the power supply voltage), the running state in the first communication message is a fault (for example, the field corresponding to the running state is 0).
The second control unit 73 receives the first communication message from the communication bus through the second communication unit 74 after the inverter is started, and controls the inverter to stop outputting the driving voltage to the compressor when the operation state in the received first communication message is a fault, thereby stopping the operation of the compressor.
According to the two-in-one driver protection system, the frequency converter directly reads the first communication message (generated by the direct current-to-direct current power supply) in the communication bus to obtain the running state of the direct current-to-direct current power supply, and when the running state in the first communication message is a fault, the output of the driving voltage to the compressor is stopped, so that the compressor can be stopped without an external air conditioner controller, the refrigerant pressure in an air conditioner pipeline is prevented from being too high, and the service life of the air conditioner is prolonged.
In another embodiment of the present invention, the second control unit 73 further controls the inverter to stop outputting the driving voltage to the compressor when the first communication message is not received within a first preset time period after the inverter is started or within a first preset time period during operation, where the first preset time period is greater than or equal to the first preset period. By the mode, even if the communication between the direct current-direct current power supply and the frequency converter is interrupted, the compressor can be stopped, and the safety is further improved.
In addition, after the frequency converter is started, the second control unit 73 sends a second communication message to the communication bus through the second communication unit 74 according to a second preset period, and the second communication message includes the running state of the frequency converter.
The air conditioner controller further comprises a third control unit and a third communication unit, and the third communication unit is connected to the communication bus. The third control unit receives a first communication message from a direct current-to-direct current power supply and a second communication message from the frequency converter from the communication bus through the third communication unit, and sends a third communication message and a fourth communication message containing a stop instruction to the communication bus when the running state in the received first communication message is a fault or the running state in the received second communication message is a fault. Correspondingly, when the first communication unit receives a third communication message containing a stop instruction, the first control unit controls the direct current-to-direct current power supply to stop outputting the power supply voltage to the fan; and the second control unit controls the frequency converter to stop outputting the power supply voltage to the compressor when the second communication unit receives a fourth communication message containing a stop instruction.
The two-in-one driver protection system in this embodiment belongs to the same concept as the two-in-one driver protection method in the corresponding embodiments of fig. 1 to 6, the specific implementation process is detailed in the corresponding method embodiment, and the technical features in the method embodiment are correspondingly applicable in the device embodiment, which is not repeated herein.
The embodiment of the present invention further provides a two-in-one driver protection device 8, which may specifically be configured by a two-in-one driver 8, as shown in fig. 8, where the two-in-one driver protection device 8 includes a memory 81 and a processor 82 (specifically may include a memory and a processor in a dc-to-dc power supply, and a memory and a processor in a frequency converter), a computer program executable by the processor 82 is stored in the memory 81, and the steps of the two-in-one driver protection method described above are implemented when the processor 82 executes the computer program.
The two-in-one driver protection device 8 in this embodiment belongs to the same concept as the two-in-one driver protection method in the corresponding embodiments of fig. 1 to 6, the specific implementation process is detailed in the corresponding method embodiment, and the technical features in the method embodiment are correspondingly applicable in the device embodiment, and are not repeated herein.
The embodiment of the invention also provides a computer readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the two-in-one drive protection method are realized.
The computer readable storage medium in this embodiment belongs to the same concept as the two-in-one drive protection method in the corresponding embodiments of fig. 1 to 6, the specific implementation process is detailed in the corresponding method embodiment, and the technical features in the method embodiment are correspondingly applicable in the device embodiment, which is not repeated herein.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional units and modules according to needs. The functional units and modules in the embodiment may be integrated in one processor, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed two-in-one driver protection method, system and apparatus may be implemented in other manners. For example, the two-in-one drive protection system embodiment described above is merely illustrative.
In addition, each functional unit in the embodiments of the present application may be integrated in one processor, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each method embodiment described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or interface switching device, recording medium, USB flash disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), electrical carrier wave signals, telecommunications signals, and software distribution media, among others, capable of carrying the computer program code. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (8)

1. The utility model provides a two unification driver protection method, is applied to the vehicle air conditioner, the vehicle air conditioner includes two unification driver and air conditioner controller, just two unification driver includes the converter that is used for driving the compressor operation and is used for the direct current to direct current power supply that supplies power for the fan, converter, direct current to direct current power supply and air conditioner controller are connected to communication bus respectively, its characterized in that, the method includes:
the method comprises the steps that after the direct-current-to-direct-current power supply is started, a first communication message is sent to the communication bus according to a first preset period, and the first communication message comprises the running state of the direct-current-to-direct-current power supply;
the frequency converter directly receives the first communication message from the communication bus, and stops outputting driving voltage to the compressor when the running state in the received first communication message is a fault, so that the compressor can be stopped without an external air conditioner controller;
the method further comprises the steps of:
the frequency converter sends a second communication message to the communication bus according to a second preset period after being started, and the second communication message comprises the running state of the frequency converter;
the air conditioner controller receives the first communication message and the second communication message from the communication bus, and sends a third communication message and a fourth communication message containing an operation stopping instruction to the communication bus when the operation state in the received first communication message is a fault or the operation state in the received second communication message is a fault;
when the direct current-to-direct current power supply receives a third communication message containing an operation stopping instruction, stopping outputting a power supply voltage to the fan;
and when the frequency converter receives a fourth communication message containing an operation stopping instruction, stopping outputting the power supply voltage to the compressor.
2. The two-in-one drive protection method of claim 1, further comprising; and stopping outputting the driving voltage to the compressor when the frequency converter does not receive the first communication message within a first preset time period after starting or within a first preset time period in the running process, wherein the first preset time period is longer than or equal to the first preset period.
3. The two-in-one drive protection method according to claim 1 or 2, further comprising:
the frequency converter sends a second communication message to the communication bus according to a second preset period after being started, and the second communication message comprises the running state of the frequency converter;
and the direct current-to-direct current power supply receives the second communication message from the communication bus, and stops outputting the driving voltage to the fan when the running state in the received second communication message is a fault.
4. A two-in-one drive protection method as claimed in claim 3, further comprising: and stopping outputting the driving voltage to the fan when the direct current-to-direct current power supply does not receive the second communication message within a second preset time period after starting or within a second preset time period in the running process, wherein the second preset time period is longer than or equal to the second preset period.
5. The utility model provides a two unification driver protection system, is applied to the vehicle air conditioner, the vehicle air conditioner includes two unification driver and air conditioner controller, just two unification driver is including the converter that is used for driving the compressor operation and be used for the direct current to direct current power supply of fan power supply, the air conditioner controller is connected to communication bus, its characterized in that, the system includes be located direct current to direct current power supply's first control unit and first communication unit, and be located the second control unit and the second communication unit of converter, just first communication unit and second communication unit are connected to respectively communication bus, wherein:
after the direct current-to-direct current power supply is started, the first control unit sends a first communication message to the communication bus through the first communication unit according to a first preset period, wherein the first communication message comprises the running state of the direct current-to-direct current power supply;
the second control unit directly receives the first communication message from the communication bus through the second communication unit after the frequency converter is started, and controls the frequency converter to stop outputting driving voltage to the compressor when the running state in the received first communication message is a fault, so that the compressor can be stopped without an external air conditioner controller;
the second control unit further sends a second communication message to the communication bus according to a second preset period after the frequency converter is started, and the second communication message comprises the running state of the frequency converter;
the air conditioner controller comprises a third control unit and a third communication unit, and the third communication unit is connected to the communication bus; the third control unit receives the first communication message and the second communication message from the communication bus through the third communication unit, and sends a third communication message and a fourth communication message containing a stop instruction to the communication bus when the received running state of the first communication message is a fault or the received running state of the second communication message is a fault;
when the first communication unit receives a third communication message containing a stop instruction, the first control unit controls the direct current-to-direct current power supply to stop outputting power supply voltage to the fan;
and the second control unit controls the frequency converter to stop outputting the power supply voltage to the compressor when the second communication unit receives a fourth communication message containing a stop instruction.
6. The two-in-one driver protection system according to claim 5, wherein the second control unit further controls the inverter to stop outputting the driving voltage to the compressor when the first communication message is not received within a first preset time period after the inverter is started or within a first preset time period during operation, and the first preset time period is greater than or equal to the first preset period.
7. A two-in-one drive protection device comprising a memory and a processor, the memory having stored therein a computer program executable on the processor, the processor implementing the steps of the two-in-one drive protection method as claimed in any one of claims 1 to 4 when the computer program is executed by the processor.
8. A computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, which when executed by a processor, implements the steps of the two-in-one drive protection method according to any one of claims 1 to 4.
CN201911189302.7A 2019-11-28 2019-11-28 Two-in-one drive protection method, system, device and storage medium Active CN110901337B (en)

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JP4297793B2 (en) * 2004-01-14 2009-07-15 三洋電機株式会社 Air conditioner
CN103264673A (en) * 2013-05-21 2013-08-28 中国汽车技术研究中心 Hybrid electric vehicle network communication system with two CAN (Controller Area Network) buses
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