CN111055654A - Automobile air conditioner electromagnetic valve control method, system and device - Google Patents
Automobile air conditioner electromagnetic valve control method, system and device Download PDFInfo
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- CN111055654A CN111055654A CN201911253638.5A CN201911253638A CN111055654A CN 111055654 A CN111055654 A CN 111055654A CN 201911253638 A CN201911253638 A CN 201911253638A CN 111055654 A CN111055654 A CN 111055654A
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- voltage battery
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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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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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
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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
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Thermal Sciences (AREA)
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- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The embodiment of the invention discloses a method, a system and a device for controlling an electromagnetic valve of an automobile air conditioner, wherein the control method comprises the following steps: acquiring the on-off state of an A/C key of an air conditioner; acquiring temperature information of a high-voltage battery pack; judging whether the high-voltage battery pack needs to be cooled or not according to the temperature information of the high-voltage battery pack; and controlling the opening or closing of the electromagnetic valve according to the switch of the air conditioner A/C key and whether the high-voltage battery pack needs to be cooled. The invention can simultaneously monitor the air conditioning requirement of the passenger compartment and the cooling requirement of the high-voltage battery pack, respectively meet the refrigeration requirements of the passenger compartment and the high-voltage battery pack through the refrigerant loop and the cooling liquid loop, has simple control logic, avoids the condition of noise and vibration when the opening and closing of an air conditioner electromagnetic valve are both required to be switched on and off frequently, and shortens the reaction time.
Description
Technical Field
The invention relates to the technical field of automobile air-conditioning systems, in particular to a method, a system and a device for controlling an electromagnetic valve of an automobile air-conditioning.
Background
The PHEV (plug in Hybrid Electric vehicle), namely the plug-in Hybrid Electric vehicle, generally has a refrigerant circulation loop which is communicated with an air conditioning system in a power battery of the Electric vehicle. Compared with the air conditioning system of the traditional vehicle, the PHEV is additionally provided with a cooler (Chiller) for meeting the active cooling requirement of the high-voltage battery pack, the high-voltage battery pack is directly cooled by cooling liquid, and the cooling liquid circulation loop is connected with the refrigerant circulation loop through a cooling liquid refrigerant heat exchanger (cooling unit). Therefore, the air conditioning system refrigerant circulation circuit is composed of two parallel branches. One for cooling the vehicle interior space and one for cooling the high-voltage battery pack. In order to meet the condition that the passenger compartment only needs to be cooled alone when refrigeration is not needed, a solenoid valve (SOV) is added on an air conditioning pipeline positioned at the front end of an air conditioning box.
Since the noise and vibration generated when the solenoid valve is switched to the on/off state are transmitted to the passenger compartment to cause complaints from users, there is a need for improvement over the prior art to reduce the noise and noise caused by frequent closing of the solenoid valve when the air conditioner is in use.
Disclosure of Invention
The technical problem to be solved by the present invention is that, since the solenoid valve is disposed on the air-conditioning duct and is located very close to the expansion valve of the air-conditioning box, noise and vibration generated when the solenoid valve is switched on/off are transmitted to the evaporator (located under the instrument panel in the cabin) in the air-conditioning box through the air-conditioning duct, and are perceived by the driver as being generated abnormal noise, causing discomfort to the driver.
To solve the above technical problems, the present invention has been made to overcome the disadvantages and drawbacks of the prior art,
in a first aspect, an embodiment of the present invention provides a method for controlling an electromagnetic valve of an automotive air conditioner, including the following steps:
acquiring the on-off state of an A/C key of an air conditioner;
acquiring temperature information of a high-voltage battery pack;
judging whether the high-voltage battery pack needs to be cooled or not according to the temperature information of the high-voltage battery pack;
controlling the opening or closing of the electromagnetic valve according to whether the switch of the air conditioner A/C key and the high-voltage battery pack need to be cooled;
when the A/C button of the air conditioner is opened, controlling the electromagnetic valve to be kept opened so as to enable the refrigerant to circulate;
when the A/C key of the air conditioner is closed and the high-voltage battery pack needs to be cooled, controlling the electromagnetic valve to be closed;
and when the A/C key of the air conditioner is closed and the high-voltage battery pack does not need to be cooled, controlling the electromagnetic valve to be kept open.
Further, the determining whether the high voltage battery pack needs to be cooled according to the temperature information of the high voltage battery pack includes:
when the temperature of the high-voltage battery pack is greater than or equal to a preset temperature, the high-voltage battery pack needs to be cooled;
and when the temperature of the high-voltage battery pack is lower than the preset temperature, the high-voltage battery pack does not need to be cooled.
Further, when the air conditioner A/C button is opened, controlling the electromagnetic valve to be kept opened comprises;
when the A/C button of the air conditioner is opened and the high-voltage battery pack does not need to be cooled, controlling the electromagnetic valve to be kept opened;
and when the A/C key of the air conditioner is opened and the high-voltage battery pack needs to be cooled, controlling the electromagnetic valve to be kept opened.
The invention provides a control system of an electromagnetic valve of an automobile air conditioner, comprising:
the first acquisition module is used for acquiring the on-off state of an A/C key of the air conditioner;
the second acquisition module is used for acquiring the temperature information of the high-voltage battery pack;
the first judgment module is used for judging whether the high-voltage battery pack needs to be cooled or not;
and the control module is used for controlling the opening or closing of the electromagnetic valve.
The invention also provides an automobile air conditioner solenoid valve control device, which is used for configuring the control system and comprises an air conditioner compressor, a solenoid valve, a high-voltage battery pack, a battery management unit, an air conditioner control unit, an air conditioner A/C key and an entire automobile control unit, wherein the entire automobile control unit is connected with the air conditioner compressor, the solenoid valve, the battery management unit and the air conditioner control unit;
the electromagnetic valve is used for controlling the circulation or the cut-off of the refrigerant; the battery management unit is used for monitoring the temperature of the high-voltage battery pack and sending a cooling instruction to the vehicle control unit when the temperature of the high-voltage battery pack is greater than or equal to a preset temperature; the air conditioner control unit is used for acquiring the on-off state of the air conditioner A/C key and sending the state of the air conditioner A/C key to the whole vehicle control unit; and the whole vehicle control unit controls the electromagnetic valve to be opened or closed according to whether the air conditioner A/C button is switched on or off or not and the high-voltage battery pack needs to be cooled.
Further, the control device further comprises a condenser and an evaporator, and the air conditioner compressor, the condenser and the evaporator are sequentially communicated into a first refrigerant loop through an air conditioner pipeline.
Further, the control device further comprises an expansion valve, the expansion valve is arranged at the inlet end of the evaporator, the electromagnetic valve is arranged at the inlet end of the expansion valve, and the expansion valve is used for adjusting and controlling the flow and pressure of the refrigerant.
Further, the control device also comprises a cooler, and the air-conditioning compressor, the condenser and the cooler are communicated into a second refrigerant loop through the air-conditioning pipeline.
Further, controlling means still includes the water pump, high-voltage battery package, electron water valve, cooler and water pump communicate in proper order through the coolant liquid pipeline and are the coolant liquid return circuit, the coolant liquid return circuit is used for the coolant liquid circulation and reduces high-voltage battery package temperature.
Further, the electromagnetic valve is a normally open electromagnetic valve.
The embodiment of the invention has the following beneficial effects:
(1) the control logic of the electromagnetic valve is modified and optimized, the relevance between the on-off state of the electromagnetic valve and an air conditioner A/C key is cancelled, and when the air conditioner A/C key is opened, the electromagnetic valve is kept opened; when the A/C button of the air conditioner is closed, if the high-voltage battery pack needs to be cooled at the moment, the electromagnetic valve is closed, otherwise, the electromagnetic valve is kept in an open state.
(2) The invention simultaneously monitors the air conditioning requirement of the passenger compartment and the cooling requirement of the high-voltage battery pack, and respectively meets the refrigeration requirements of the passenger compartment and the high-voltage battery pack through the refrigerant loop and the cooling liquid loop.
(3) The electromagnetic valve in the electromagnetic valve control method is in a normally open state, so that the condition of noise and vibration generated when the electromagnetic valve of the air conditioner is opened and closed and the on/off state of the electromagnetic valve is frequently switched is avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a step diagram of a method for controlling an electromagnetic valve of an automotive air conditioner according to the present invention;
FIG. 2 is a schematic structural diagram of an electromagnetic valve control device of an automobile air conditioner.
Wherein the reference numerals in the figures correspond to: the air conditioner comprises an air conditioner compressor, a condenser, an evaporator, an air conditioner control unit, a solenoid valve, a 6 expansion valve, a cooler, a high-voltage battery pack, a 9 water pump, a first refrigerant loop, a second refrigerant loop, a cooling liquid loop, a battery management unit, a 14 electronic water valve, an air conditioner control unit and an air conditioner A/C button, wherein the air conditioner control unit is connected with the battery management unit through the solenoid valve, the battery management unit is connected with the air conditioner control unit through the electronic water valve, and the air conditioner A/C button is connected with the air conditioner control unit through the electronic.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The new energy power battery units are equipped with cooling devices, and are generally classified into air-conditioning circulation cooling type, water-cooling type and air-cooling type. Since the solenoid valve is disposed on the air-conditioning duct at a position very close to the expansion valve, noise and vibration are transmitted to an evaporator (under an instrument panel in a cabin) of the air conditioner through the air-conditioning duct when the solenoid valve is turned on and off, are clearly perceived by a user and abnormal noise is generated, causing great complaints from the user. In the control method of the electromagnetic valve in the air conditioner circulating cooling type system in the prior art, the electromagnetic valve is closed when an A/C key of an air conditioner is closed, and then the electromagnetic valve is opened again when the cooling requirement of a high-voltage battery pack is not received after 10-20s, so that the air conditioner in a passenger compartment is switched on and off, the electromagnetic valve is also frequently switched on and off, and more noise is generated.
The a/C (air conditioning) car air conditioner, and the a/C switch is a car air conditioner switch button that is a car air conditioner switch.
Example 1:
as shown in fig. 1, an embodiment of the present invention provides a method for controlling an electromagnetic valve of an automotive air conditioner, including the following steps:
and S101, acquiring the switch state of the air conditioner A/C key.
Specifically, in practical application, the switch of the air conditioner A/C button is controlled according to the refrigerating requirement of the passenger compartment, when the passenger compartment needs to be refrigerated, the air conditioner A/C button is turned on to refrigerate the passenger compartment, and when the passenger compartment does not need to be refrigerated, the air conditioner A/C button is turned off. Specifically, the air-conditioning control unit judges whether the passenger compartment is refrigerated according to the received switch signal of the air-conditioning A/C key.
And S102, acquiring temperature information of the high-voltage battery pack. Specifically, the temperature of the high-voltage battery pack is monitored in real time by a battery management unit.
And S103, judging whether the high-voltage battery pack needs to be cooled or not according to the temperature information of the high-voltage battery pack.
Specifically, the determining whether the high-voltage battery pack needs to be cooled according to the temperature information of the high-voltage battery pack includes:
s103a, when the temperature of the high-voltage battery pack is greater than or equal to a preset temperature, the high-voltage battery pack needs to be cooled;
s103b, when the temperature of the high-voltage battery pack is lower than the preset temperature, the high-voltage battery pack does not need to be cooled.
In particular, because the performance of the power cell is closely related to the cell temperature. In order to prolong the service life of the power battery as far as possible and obtain the maximum power, the storage battery is required to be used within a specified temperature range. In principle, the high-voltage battery pack is in an operable state in the range of-40 ℃ to +55 ℃ (actual battery temperature), but the optimum use temperature of the lithium battery is 0 ℃ to 40 ℃, and the danger may be caused by too high temperature. Therefore, the high-voltage battery pack is internally provided with a battery management unit for monitoring the temperature of the high-voltage battery pack. In some embodiments, when the temperature of the high-voltage battery pack is greater than or equal to a preset temperature, and the preset temperature is 25 to 30 degrees, the battery management unit may send a cooling instruction to a vehicle control unit (electronic control unit), and the vehicle control unit receives the cooling instruction of the battery management system.
And S104, controlling the opening or closing of the electromagnetic valve according to the switch of the air conditioner A/C key and whether the high-voltage battery pack needs to be cooled.
And S105, when the A/C button of the air conditioner is opened, controlling the electromagnetic valve to be kept opened so as to enable the refrigerant to circulate.
Specifically, when the air conditioner A/C button is opened, the step of controlling the electromagnetic valve to be kept opened comprises the following steps of;
s105a, when the A/C button of the air conditioner is opened and the high-voltage battery pack does not need to be cooled, controlling the electromagnetic valve to be kept opened;
s105b, when the A/C button of the air conditioner is opened and the high-voltage battery pack needs to be cooled, controlling the electromagnetic valve to be kept opened.
And S106, when the A/C button of the air conditioner is closed and the high-voltage battery pack needs to be cooled, controlling the electromagnetic valve to be closed.
And S107, when the A/C button of the air conditioner is closed and the high-voltage battery pack does not need to be cooled, controlling the electromagnetic valve to be kept open.
Specifically, in the embodiment of the invention, the electromagnetic valve is normally in an open state, the control method of the invention is that the vehicle control unit firstly acquires the switch state of the air conditioner A/C key, and when the air conditioner A/C key is in the open state, the electromagnetic valve is kept open. When the A/C button of the air conditioner is in a closed state, whether the current high-voltage battery pack needs to be cooled or is being cooled is judged, if the current high-voltage battery pack needs to be cooled, the electromagnetic valve is controlled to be closed, and if the current high-voltage battery pack does not need to be cooled, the electromagnetic valve is kept open. In the control method, only one condition needs to control the action of the electromagnetic valve, so that the problem of noise generated by frequent opening and closing of the electromagnetic valve is greatly reduced. Because the cooling liquid loop and the refrigerant loop in the control system are subjected to heat exchange through the cooler, when the high-voltage battery pack needs to be cooled and the passenger compartment does not need the high-voltage battery pack, the refrigerant can not flow through the control electromagnetic valve in a closed mode, heat exchange of the refrigerant is limited, and the cooling effect of the cooling liquid is improved.
Example 2:
the invention provides a control system of an electromagnetic valve of an automobile air conditioner, which is used for realizing the control method of the electromagnetic valve in embodiment 1 and comprises the following steps:
the first acquisition module is used for acquiring the on-off state of an A/C key of the air conditioner;
the second acquisition module is used for acquiring the temperature information of the high-voltage battery pack;
the first judgment module is used for judging whether the high-voltage battery pack needs to be cooled or not;
and the control module is used for controlling the opening or closing of the electromagnetic valve.
Example 3:
as shown in fig. 2, the present invention provides an automotive air conditioning solenoid valve control device, wherein the control device is configured with the control system of embodiment 2, the control device includes a vehicle control unit 4, an air conditioning compressor 1, a condenser 2, an evaporator 3 and a solenoid valve 5, the vehicle control unit 4 is electrically connected to the solenoid valve 5, and the air conditioning compressor 1, the condenser 2 and the evaporator 3 are sequentially communicated through an air conditioning pipeline to form a first refrigerant loop 10. Specifically, the control device further comprises an expansion valve 6, wherein the expansion valve 6 is arranged at the inlet end of the evaporator 3, the solenoid valve 5 is arranged at the inlet end of the expansion valve 6 and is used for controlling the circulation or the stop of the refrigerant, and the expansion valve 6 is used for regulating and controlling the flow and the pressure of the refrigerant.
Specifically, controlling means still includes air conditioner the control unit 15 and air conditioner A/C button 16, the air conditioner the control unit 15 respectively with the air conditioner A/C button 16 is connected with whole car the control unit 4, the air conditioner the control unit 15 is used for monitoring the on off state of air conditioner A/C button 16, and to whole car the control unit 4 sends the state of air conditioner A/C button 16.
Specifically, the control device further comprises a high-voltage battery pack 8 and a battery management unit 13, and the whole vehicle control unit 4 is in signal and electric connection with the air conditioner compressor 1, the electromagnetic valve 5 and the battery management unit 13. The battery management unit 13 is configured to monitor the temperature of the high-voltage battery pack 8, and send a cooling instruction to the vehicle control unit 4 when the temperature of the high-voltage battery pack 8 is greater than or equal to a preset temperature; and the whole vehicle control unit 4 receives the on-off state of the air conditioner A/C key 16 fed back by the air conditioner control unit and controls the electromagnetic valve 5 to be opened or closed according to whether the air conditioner A/C key is switched on or off or the high-voltage battery pack 8 needs to be cooled.
Further, the electromagnetic valve 5 is a normally open electromagnetic valve.
Further, the control device further comprises a cooler 7, and the air-conditioning compressor 1, the condenser 2 and the cooler 7 are sequentially communicated through an air-conditioning pipeline to form a second refrigerant loop 11. In some embodiments, the cooler 7 is a refrigerant/coolant heat exchanger.
Further, the control device further comprises a water pump 9, a loop formed by sequentially communicating the high-voltage battery pack 8, the electronic water valve 14, the cooler 7 and the water pump 9 through a cooling liquid pipeline is a cooling liquid loop 12, the cooling liquid loop 12 is used for circulating cooling liquid and reducing the temperature of the high-voltage battery pack 8, and the electronic water valve 14 is connected with the battery management unit 13 and used for controlling the flowing direction of the cooling liquid in the cooling liquid loop 12.
Specifically, in the embodiment of the present invention, the first refrigerant circuit 10 and the second refrigerant circuit 11 are arranged in parallel, the refrigerant returns to the air-conditioning compressor 1 through the evaporator in the first refrigerant circuit 10, and returns to the air-conditioning compressor 1 after heat exchange is performed through the cooler in the second refrigerant circuit, wherein the passenger compartment air-conditioning refrigeration process is that the air-conditioning compressor 1 compresses the gas refrigerant after absorbing heat into high-temperature and high-pressure gas to be discharged. The high-temperature and high-pressure gas gives off a large amount of heat to the outside air in the condenser 2, and is condensed to form medium-temperature and high-pressure refrigerant liquid. The refrigerant reaches the evaporator 3 through the expansion valve 6, and at this time, the refrigerant is a low-temperature low-pressure gas-liquid coexisting body, and easily absorbs heat of the ambient air. The refrigerant absorbs heat and turns into gas to return to the air-conditioning compressor 1, and the whole process is circularly carried out. The cooling process of the high-voltage battery pack 8 is that when the battery management unit 13 detects that the temperature of the battery pack rises to reach a preset temperature through the temperature sensor, information that the high-voltage battery pack 8 needs to be cooled is sent to the whole vehicle control unit 4, the battery management unit 13 controls the water pump 9 to be started for cooling, the cooling liquid returns to the high-voltage battery pack 8 for circulation after being subjected to heat exchange in the cooling liquid loop 12 through the cooler 7, when the high-voltage battery pack 8 needs to be cooled and a passenger compartment does not need, the electromagnetic valve 5 is controlled to be closed, so that the refrigerant can not circulate, the heat exchange amount of the refrigerant and the cooling liquid of the second refrigerant loop 11 is increased, and the cooling effect of the cooling liquid loop 12 is improved.
The control logic of the electromagnetic valve is modified and optimized, the relevance between the on-off state of the electromagnetic valve and an air conditioner A/C key is cancelled, and when the air conditioner A/C key is opened, the electromagnetic valve is kept opened; when the A/C button of the air conditioner is closed, if the high-voltage battery pack needs to be cooled at the moment, the electromagnetic valve is closed, otherwise, the electromagnetic valve is kept in an open state. The invention simultaneously monitors the air conditioning requirement of the passenger compartment and the cooling requirement of the high-voltage battery pack, and respectively meets the refrigeration requirements of the passenger compartment and the high-voltage battery pack through the refrigerant loop and the cooling liquid loop. The electromagnetic valve in the electromagnetic valve control method is in a normally open state, so that the condition of noise and vibration generated when the electromagnetic valve of the air conditioner is opened and closed and the on/off state of the electromagnetic valve is frequently switched is avoided.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
All the modules in the technical scheme of the invention can be realized by a computer terminal or other equipment. The computer terminal includes a processor and a memory. The memory is used for storing the program instructions/modules in the invention, and the processor realizes the corresponding functions of the invention by operating the program instructions/modules stored in the memory.
The technical solution of the present invention may be substantially implemented or a part of or all or part of the technical solution that contributes to the prior art may be implemented in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more computer devices (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention.
The division of the modules/units described in the present invention is only a logical function division, and other division manners may be available in actual implementation, for example, a plurality of units or components may be combined or integrated into another device, or some features may be omitted, or not executed. Some or all of the modules/units can be selected according to actual needs to achieve the purpose of implementing the scheme of the invention.
In addition, each module/unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A control method of an electromagnetic valve of an automobile air conditioner is characterized by comprising the following steps:
acquiring the on-off state of an A/C key of an air conditioner;
acquiring temperature information of a high-voltage battery pack;
judging whether the high-voltage battery pack needs to be cooled or not according to the temperature information of the high-voltage battery pack;
controlling the opening or closing of the electromagnetic valve according to whether the switch of the air conditioner A/C key and the high-voltage battery pack need to be cooled;
when the A/C button of the air conditioner is opened, controlling the electromagnetic valve to be kept opened so as to enable the refrigerant to circulate;
when the A/C key of the air conditioner is closed and the high-voltage battery pack needs to be cooled, controlling the electromagnetic valve to be closed;
and when the A/C key of the air conditioner is closed and the high-voltage battery pack does not need to be cooled, controlling the electromagnetic valve to be kept open.
2. The control method of the electromagnetic valve of the automobile air conditioner as claimed in claim 1, wherein the determining whether the high-voltage battery pack needs to be cooled according to the temperature information of the high-voltage battery pack comprises:
when the temperature of the high-voltage battery pack is greater than or equal to a preset temperature, the high-voltage battery pack needs to be cooled;
and when the temperature of the high-voltage battery pack is lower than the preset temperature, the high-voltage battery pack does not need to be cooled.
3. The control method of the electromagnetic valve of the automobile air conditioner is characterized in that when the A/C button of the air conditioner is opened, the step of controlling the electromagnetic valve to be kept opened comprises the following steps of;
when the A/C button of the air conditioner is opened and the high-voltage battery pack does not need to be cooled, controlling the electromagnetic valve to be kept opened;
and when the A/C key of the air conditioner is opened and the high-voltage battery pack needs to be cooled, controlling the electromagnetic valve to be kept opened.
4. The utility model provides a vehicle air conditioner solenoid valve control system which characterized in that includes:
the first acquisition module is used for acquiring the on-off state of an A/C key of the air conditioner;
the second acquisition module is used for acquiring the temperature information of the high-voltage battery pack;
the first judgment module is used for judging whether the high-voltage battery pack needs to be cooled or not;
and the control module is used for controlling the opening or closing of the electromagnetic valve.
5. An automobile air conditioner solenoid valve control device is used for configuring the control system of claim 4, and is characterized by comprising an air conditioner compressor (1), a solenoid valve (5), a high-voltage battery pack (8), a battery management unit (13), an air conditioner control unit (15), an air conditioner A/C key (16) and an entire automobile control unit (4), wherein the entire automobile control unit (4) is connected with the air conditioner compressor (1), the solenoid valve (5), the battery management unit (13) and the air conditioner control unit (15);
the electromagnetic valve (5) is used for controlling the circulation or the cut-off of the refrigerant; the battery management unit (13) is used for monitoring the temperature of the high-voltage battery pack (8), and sending a cooling instruction to the vehicle control unit (4) when the temperature of the high-voltage battery pack (8) is greater than or equal to a preset temperature; the air conditioner control unit (15) is used for monitoring the on-off state of the air conditioner A/C key (16) and sending the state of the air conditioner A/C key (16) to the vehicle control unit (4); and the whole vehicle control unit (4) controls the electromagnetic valve (5) to be opened or closed according to whether the air conditioner A/C key is switched on or off or not and the high-voltage battery pack (8) needs to be cooled.
6. The electromagnetic valve control device for the automobile air conditioner is characterized by further comprising a condenser (2) and an evaporator (3), wherein the air conditioner compressor (1), the condenser (2) and the evaporator (3) are sequentially communicated into a first refrigerant loop (10) through an air conditioner pipeline.
7. The solenoid valve control device for the air conditioner of the automobile according to claim 6, characterized in that, the control device further comprises an expansion valve (6), the solenoid valve (5) is arranged at the inlet end of the expansion valve (6), the expansion valve (6) is arranged at the inlet end of the evaporator (3), and the expansion valve (6) is used for adjusting and controlling the refrigerant flow and pressure.
8. The solenoid valve control device for the automobile air conditioner is characterized by further comprising a cooler (7), wherein the air conditioner compressor (1), the condenser (2) and the cooler (7) are communicated into a second refrigerant loop (11) through the air conditioner pipeline.
9. The electromagnetic valve control device for the automobile air conditioner is characterized by further comprising a water pump (9) and an electronic water valve (14), wherein the high-voltage battery pack (8), the electronic water valve (14), the cooler (7) and the water pump (9) are sequentially communicated into a cooling liquid loop (12) through a cooling liquid pipeline, and the cooling liquid loop (12) is used for circulating cooling liquid and reducing the temperature of the high-voltage battery pack (8).
10. The solenoid valve control device for the air conditioner of the automobile as claimed in claim 5, wherein the solenoid valve (5) is a normally open solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911253638.5A CN111055654A (en) | 2019-12-09 | 2019-12-09 | Automobile air conditioner electromagnetic valve control method, system and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911253638.5A CN111055654A (en) | 2019-12-09 | 2019-12-09 | Automobile air conditioner electromagnetic valve control method, system and device |
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| CN111055654A true CN111055654A (en) | 2020-04-24 |
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| CN201911253638.5A Pending CN111055654A (en) | 2019-12-09 | 2019-12-09 | Automobile air conditioner electromagnetic valve control method, system and device |
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Cited By (1)
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