CN111993860B - Vehicle refrigeration system control method, equipment, storage medium and device - Google Patents
Vehicle refrigeration system control method, equipment, storage medium and device Download PDFInfo
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- CN111993860B CN111993860B CN202010907723.5A CN202010907723A CN111993860B CN 111993860 B CN111993860 B CN 111993860B CN 202010907723 A CN202010907723 A CN 202010907723A CN 111993860 B CN111993860 B CN 111993860B
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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
- B60H1/00485—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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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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
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed
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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
- B60H1/3205—Control means therefor
Abstract
The invention discloses a control method, equipment, a storage medium and a device of a vehicle refrigeration system, relating to the technical field of vehicles, wherein the method comprises the following steps: acquiring operation information of a target vehicle, and determining a thermal management mode according to the operation information; determining a corresponding control strategy according to the thermal management mode; acquiring the temperature of the battery; determining corresponding control parameters according to the battery temperature and the control strategy; and controlling the target vehicle refrigeration system according to the control parameters. According to the invention, the vehicle refrigeration system is controlled according to different thermal management modules of the vehicle, so that the vehicle refrigeration system has proper control parameters under different thermal management models, and the influence on the NVH performance of the vehicle refrigeration system caused by the unlimited operation of the refrigeration system is avoided, thereby improving the NVH performance of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a control method, control equipment, a storage medium and a device of a vehicle refrigeration system.
Background
The automobile air-conditioning refrigeration system not only ensures that passengers are in a comfortable air environment under various external climates and conditions, but also ensures that the battery is cooled. Along with the battery charge-discharge multiplying power constantly promotes, battery cooling demand is bigger and bigger, battery system thermal management generally adopts the liquid cooling mode, in the operating mode of different uses, passenger's cabin and the required refrigeration capacity of battery system are different, under the extreme operating mode such as high temperature, fast charge in summer, vehicle refrigerating system need satisfy passenger's cabin and battery system and electric drive system's cooling demand simultaneously, compressor and radiator fan work are in the high load region, the NVH (Noise, Vibration, Harshness sound Vibration roughness) performance of whole car thermal management part is relatively poor, fan and compressor Noise are big, passenger's cabin subjective impression is relatively poor. The existing vehicle refrigeration system has poor NVH performance.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method, equipment, a storage medium and a device of a vehicle refrigeration system, and aims to solve the technical problem that the NVH performance of the vehicle refrigeration system is poor in the prior art.
In order to achieve the above object, the present invention provides a vehicle refrigeration system control method, including the steps of:
acquiring operation information of a target vehicle, and determining a thermal management mode according to the operation information;
determining a corresponding control strategy according to the thermal management mode;
acquiring the temperature of the battery;
determining corresponding control parameters according to the battery temperature and the control strategy;
and controlling the target vehicle refrigeration system according to the control parameters.
Optionally, the thermal management mode is a discharge thermal management mode;
the step of determining the corresponding control parameter according to the battery temperature and the control strategy comprises:
judging whether the battery temperature is greater than or equal to the battery safety line temperature;
when the temperature of the battery is greater than or equal to the temperature of the battery safety line, acquiring the speed of the target vehicle, and determining a compressor rotating speed parameter and an electronic expansion valve opening parameter according to the speed;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
Optionally, after determining whether the battery temperature is greater than or equal to the battery safety line temperature, the method further includes:
when the battery temperature is lower than a first preset battery temperature, acquiring the ambient temperature of the environment where the target vehicle is located and the motor rotating speed of the target vehicle; wherein the first preset battery temperature is less than the battery safety line temperature;
and when the environment temperature is less than or equal to a preset environment temperature and the motor rotating speed is less than or equal to a preset motor rotating speed, closing a battery electromagnetic valve of the target vehicle.
Optionally, after determining whether the battery temperature is greater than or equal to the battery safety line temperature, the method further includes:
when the battery temperature is in a first battery temperature range, acquiring the total refrigeration power requirement of the whole vehicle thermal management system; wherein the temperatures in the first battery temperature range are all less than the battery safety line temperature;
determining a compressor rotation speed parameter according to the total refrigeration demand power;
acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a first preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of a compressor;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
Optionally, the thermal management mode is a fast charging management mode;
the step of determining the corresponding control parameter according to the battery temperature and the control strategy comprises the following steps:
acquiring total refrigeration demand power of a whole vehicle thermal management system;
searching a compressor rotating speed parameter and an electronic expansion valve opening parameter in a second preset control parameter table according to the total refrigeration demand power and the battery temperature;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
Optionally, the thermal management mode is a slow charging management mode;
the step of determining the corresponding control parameter according to the battery temperature and the control strategy comprises the following steps:
judging whether the battery temperature is greater than or equal to the battery safety line temperature;
when the temperature of the battery is greater than or equal to the temperature of the safety line of the battery, starting an automatic adjusting system of an electronic expansion valve;
acquiring an opening parameter of the electronic expansion valve output by the automatic adjusting system of the electronic expansion valve;
and taking the opening parameter of the electronic expansion valve and the preset rotating speed parameter of the compressor as control parameters.
Optionally, after determining whether the battery temperature is greater than or equal to the battery safety line temperature, the method further includes:
when the battery temperature is in a second battery temperature range, acquiring the total refrigeration power requirement of the whole vehicle thermal management system; wherein the temperatures in the second battery temperature range are all less than the battery safety line temperature;
determining a compressor rotation speed parameter according to the total refrigeration demand power;
acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a third preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of the compressor;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
Further, to achieve the above object, the present invention also provides a vehicle refrigeration system control apparatus including: a memory, a processor, and a vehicle refrigeration system control program stored on the memory and executable on the processor, the vehicle refrigeration system control program when executed by the processor implementing the steps of the vehicle refrigeration system control method as described above.
In addition, to achieve the above object, the present invention also provides a storage medium having a vehicle refrigeration system control program stored thereon, which when executed by a processor implements the steps of the vehicle refrigeration system control method as described above.
In addition, to achieve the above object, the present invention also provides a vehicle refrigeration system control apparatus including:
the thermal management mode confirming module is used for acquiring the operation information of the target vehicle and determining a thermal management mode according to the operation information;
the control strategy determining module is used for determining a corresponding control strategy according to the thermal management mode;
the parameter acquisition module is used for acquiring the temperature of the battery;
the control parameter confirmation module is used for determining corresponding control parameters according to the battery temperature and the control strategy;
and the control module is used for controlling the target vehicle refrigeration system according to the control parameters.
According to the method, a thermal management mode is determined by acquiring the operation information of a target vehicle and according to the operation information; determining a corresponding control strategy according to the thermal management mode; acquiring the temperature of the battery; determining corresponding control parameters according to the battery temperature and the control strategy; and controlling the target vehicle refrigeration system according to the control parameters. According to the invention, the vehicle refrigeration system is controlled according to different thermal management modules of the vehicle, so that the vehicle refrigeration system has proper control parameters under different thermal management models, and the influence on the NVH performance of the vehicle refrigeration system caused by the unlimited operation of the refrigeration system is avoided, thereby improving the NVH performance of the whole vehicle.
Drawings
FIG. 1 is a schematic diagram of a vehicle refrigeration system control apparatus for a hardware operating environment in accordance with an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram illustrating a first embodiment of a method of controlling a vehicle refrigeration system in accordance with the present invention;
FIG. 3 is a schematic flow chart diagram illustrating a second embodiment of a method of controlling a vehicle refrigeration system in accordance with the present invention;
FIG. 4 is a schematic flow chart diagram illustrating a third embodiment of a method of controlling a vehicle refrigeration system in accordance with the present invention;
FIG. 5 is a schematic flow chart diagram illustrating a fourth embodiment of a control method for a vehicle refrigeration system in accordance with the present invention;
fig. 6 is a block diagram showing the construction of the first embodiment of the control apparatus for a vehicle refrigeration system according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle refrigeration system control device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the vehicle refrigeration system control apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the vehicle refrigeration system control apparatus and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in FIG. 1, the memory 1005, identified as one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a vehicle refrigeration system control program.
In the vehicle refrigeration system control apparatus shown in fig. 1, the network interface 1004 is mainly used for connecting with a background server, and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the vehicle refrigeration system control apparatus calls a vehicle refrigeration system control program stored in the memory 1005 via the processor 1001 and executes the vehicle refrigeration system control method provided by the embodiment of the present invention.
Based on the hardware structure, the embodiment of the control method of the vehicle refrigeration system is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of a control method for a vehicle refrigeration system according to the present invention.
In a first embodiment, the vehicle refrigeration system control method includes the steps of:
step S10: the method comprises the steps of obtaining operation information of a target vehicle, and determining a thermal management mode according to the operation information.
It should be understood that the execution subject of this embodiment is the vehicle refrigeration system control device, the vehicle refrigeration system control device has functions of data acquisition, data communication, program operation, and the like, and the vehicle refrigeration system control device may be a vehicle integrated domain controller, and of course, may also be other devices having similar functions, which is not limited in this embodiment.
The target vehicle is a vehicle that needs cooling by a current vehicle cooling system. The refrigerating area of the target vehicle mainly comprises a passenger cabin and a battery system, and refrigerating capacity generated by the refrigerating system can be transmitted to the passenger cabin and the battery system through an electronic expansion valve. Meanwhile, the refrigerating capacity of each part of the passenger compartment and the battery system can be distributed by controlling the opening degree of the electronic expansion valve.
It should be noted that the operation information generally includes a cooling requirement of the passenger compartment (such as an air conditioning mode, a temperature, an air volume, and the like), a driving intention (such as a vehicle speed, an acceleration, a braking, and the like), or a usage scenario (such as a driving, a charging, an idling stop, and the like), and may also include other information, which is not limited in this embodiment.
It should be noted that different thermal management modes are provided under different operating conditions in order to ensure proper control of the refrigeration system. Typical vehicle thermal management modes may include: an independent battery system thermal management mode, wherein only the battery system has thermal management requirements; an independent passenger compartment thermal management mode, wherein only the passenger compartment has thermal management requirements; the battery system and the passenger cabin are in a coupling heat management mode, and in the mode, the battery and the passenger cabin are in heat management coupling, so that the heat management requirements of two systems are met simultaneously; the mode can be divided into three sub-modes, namely a discharge heat management mode, a fast charge heat management mode and a slow charge heat management mode.
It should be appreciated that the operating information of the vehicle corresponds to different operating conditions of the vehicle, and the thermal management mode is determined based on the operating conditions. For example, when the passenger compartment is detected to have a cooling demand and the battery system is turned off, the corresponding heat management mode of the vehicle is indicated as the independent passenger compartment heat management mode. When the passenger compartment and the battery system are detected to have cooling requirements, the corresponding thermal management mode of the vehicle is a coupling thermal management mode.
Step S20: and determining a corresponding control strategy according to the thermal management mode.
It should be noted that, since the cooling capacity generated by the cooling system is limited, and the space with the cooling capacity requirement includes the passenger compartment and the battery system, different control strategies are provided in different modes to meet the cooling requirement of the passenger compartment or the battery system. The control strategy may refer to a passenger compartment and battery system allocation strategy, such as passenger compartment override or battery system override.
Step S30: and acquiring the temperature of the battery.
The battery temperature may be a real-time temperature of the vehicle battery, or may be a maximum temperature of the vehicle battery over a period of time. The battery temperature of the automobile battery can be acquired through the temperature sensor arranged in the battery system.
Step S40: and determining corresponding control parameters according to the battery temperature and the control strategy.
It will be appreciated that the higher the battery temperature, the greater the amount of refrigeration required; the lower the battery temperature, the less cooling capacity is required. In order to ensure the normal operation of the automobile, the cooling capacity supply of the battery system is preferentially ensured in the embodiment.
It should be noted that the control parameters generally include a compressor speed control parameter and an electronic expansion valve control parameter. The speed of the compressor can affect the total refrigeration generated by the refrigeration system and the electronic expansion valve can regulate the amount of refrigeration distributed to the passenger compartment and the battery system.
It will be appreciated that the compressor speed control parameter and the electronic expansion valve control parameter have different values for different thermal management modes and different battery temperatures. For example, a higher battery temperature or a lower passenger compartment air conditioning temperature setting may indicate that the refrigeration system needs to generate more cooling capacity and, correspondingly, a higher compressor speed. The specific value of the control parameter can be freely set according to the requirement of the user, and this embodiment is not limited to this.
Step S50: and controlling the target vehicle refrigeration system according to the control parameters.
It should be noted that, the controlling the target vehicle refrigeration system according to the control parameter may be adjusting a parameter of a corresponding device in the vehicle refrigeration system according to the control parameter. For example, the opening degree of the electronic expansion valve is adjusted according to the electronic expansion valve control parameter; or controlling the maximum rotating speed of the compressor of the refrigeration system according to the rotating speed control parameter of the compressor.
In the first embodiment, a thermal management mode is determined by acquiring the operation information of a target vehicle and according to the operation information; determining a corresponding control strategy according to the thermal management mode; acquiring the temperature of the battery; determining corresponding control parameters according to the battery temperature and the control strategy; and controlling the target vehicle refrigeration system according to the control parameters. According to the embodiment, the vehicle refrigeration system is controlled according to different heat management modules of the vehicle, so that the vehicle refrigeration system has appropriate control parameters under different heat management models, the situation that the NVH performance of the vehicle refrigeration system is influenced due to the fact that the refrigeration system runs without limitation is avoided, and the NVH performance of the whole vehicle can be improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a second embodiment of the control method for the vehicle refrigeration system according to the present invention, and the second embodiment of the control method for the vehicle refrigeration system according to the present invention is provided based on the first embodiment.
In a second embodiment, the thermal management mode is a discharging thermal management mode, and the step S40 includes:
s401: and judging whether the battery temperature is greater than or equal to the battery safety line temperature.
The discharge heat management mode is a mode in which the vehicle battery is discharged, and is usually in a running state in a vehicle state. At the moment, the battery system discharges to generate heat, the air conditioner of the passenger cabin is started, and the battery system and the passenger cabin have refrigerating capacity requirements.
The battery safety line temperature is a temperature threshold that does not affect the performance of the battery, and both too high and too low temperatures may adversely affect the performance of the battery and also reduce the service life of the battery. The present embodiment will be described with reference to a high-temperature environment as an example.
S402: and when the temperature of the battery is greater than or equal to the temperature of the battery safety line, acquiring the speed of the target vehicle, and determining a rotating speed parameter of a compressor and an opening parameter of an electronic expansion valve according to the speed.
It can be understood that when the temperature of the battery is greater than or equal to the temperature of the safety line of the battery, it indicates that the current temperature is not favorable for the use of the battery, and the temperature needs to be reduced. In this case, it is generally necessary to increase the rotation speed of the compressor, and the higher the rotation speed of the compressor, the more noise is generated. Therefore, the compressor rotation speed needs to be adjusted in consideration of noise factors, so as to determine the corresponding compressor rotation speed parameter and the electronic expansion valve opening degree parameter.
In the concrete implementation, if the vehicle speed is not less than 0 and not more than 10km/h, the battery thermal management is actively withdrawn, and only the thermal management of the passenger compartment is executed; if the speed is more than 10 and less than or equal to 20km/h, the whole vehicle integrated domain controller controls the rotating speed of the compressor to be less than or equal to S1, and the opening of the electronic expansion valve is less than 10%; if the speed is more than 20 and less than or equal to 30km/h, the whole vehicle integrated domain controller controls the rotating speed of the compressor to be less than or equal to S2, and the opening of the electronic expansion valve is less than 15%; if the speed is more than 30V and less than or equal to Vmax, the integral domain controller controls the rotating speed S of the compressor to be less than or equal to S3, and the opening degree superheat degree PID of the electronic expansion valve is adjusted; if the speed V is larger than or equal to Vmax, the whole vehicle integration domain controller actively controls the rotating speed of the compressor to be smaller than or equal to Smax. Of course, the vehicle speed determination threshold may be other values, and the present embodiment is not limited thereto.
It should be noted that S1, S2, S3 and Smax are sequentially increased, and specific values thereof may be set according to user requirements, which is not limited in this embodiment. The maximum rotating speed of the Smax compressor can stably run; vmax is that the noise of the whole vehicle is larger than the critical point of the heat management component, and the parameter can be set based on the NVH performance of the whole vehicle. When the vehicle speed is greater than Vmax, the noise of the whole vehicle is relatively large, the contribution ratio of the noise of the refrigerating system to the noise of the whole vehicle is not large, and the NVH performance of the refrigerating system can not be limited.
In addition, when the battery temperature is less than the battery safety line temperature, a certain amount of cooling needs to be allocated according to a specific temperature although the battery temperature is not excessively high. Specifically, when the battery temperature is lower than a first preset battery temperature, the ambient temperature of the environment where the target vehicle is located and the motor speed of the target vehicle are obtained; wherein the first preset battery temperature is less than the battery safety line temperature; and when the environment temperature is less than or equal to a preset environment temperature and the motor rotating speed is less than or equal to a preset motor rotating speed, closing a battery electromagnetic valve of the target vehicle.
It is understood that when the ambient temperature is less than or equal to the preset ambient temperature and the motor speed is less than or equal to the preset motor speed, the vehicle is in the idle stop state. At this time, the battery solenoid valve may be closed.
In addition, when the battery temperature is lower than the battery safety line temperature and is not lower than the first preset battery temperature, the range of the battery temperature is judged. When the battery temperature is in a first battery temperature range, acquiring the total refrigeration power requirement of the whole vehicle thermal management system; wherein the temperatures in the first battery temperature range are all less than the battery safety line temperature; determining a compressor rotation speed parameter according to the total refrigeration demand power; acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a first preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of a compressor; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
In order to make the table lookup accurate, the first battery temperature range is divided into a plurality of word temperature ranges, such as [ t1, t2], [ t3, t4], [ t5, t6] in the present embodiment. The higher the total power required for cooling, the higher the compressor speed parameter. When the total power required for cooling is greater than the maximum total power and the battery temperature is between [ t1, t2], the compressor rotation speed is set to the preset maximum rotation speed S4. When the total power of the refrigeration demand is less than or equal to the maximum total power, the rotating speeds of different compressors are set according to different total powers of the demand, and therefore the opening degree parameter of the electronic expansion valve is searched in a first preset control parameter table.
In a specific implementation, the first predetermined control parameter can be referred to the following table.
It should be noted that the passenger compartment cooling demand load is used for representing the cooling demand of the passenger compartment, and the larger the value of the cooling demand load is, the larger the demand load is. The smaller the opening of the electronic expansion valve is, the less the refrigerating capacity distributed by the battery system is, and the refrigerating capacity requirement of the passenger compartment is further increased. The numerical values in the table are only an example, and the user may set other numerical values according to the needs of the user, which is not limited in this embodiment.
S403: and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
It is understood that the compressor speed control parameter may be used to set a maximum compressor speed of the refrigeration system, and the electronic expansion valve opening parameter may be used to adjust the opening of the electronic expansion valve to a corresponding value.
In a second embodiment, the thermal management mode is a discharge thermal management mode, and a cooling capacity distribution strategy is determined by judging whether the temperature of the battery is greater than or equal to the temperature of a battery safety line; and meanwhile, different compressor control parameters and electronic expansion valve control parameters are determined according to the vehicle speed or the total refrigeration demand power. Therefore, the appropriate operation parameters are set for the refrigeration system so as to improve the NVH performance of the refrigeration system.
Referring to fig. 4, fig. 4 is a flowchart illustrating a control method for a vehicle refrigeration system according to a third embodiment of the present invention, and the control method for a vehicle refrigeration system according to the third embodiment of the present invention is provided based on the first embodiment and the second embodiment. The present embodiment is explained based on the first embodiment.
In a third embodiment, the thermal management mode is a fast charging management mode, and the step S40 includes:
step S404: and acquiring the total refrigeration demand power of the whole vehicle heat management system.
It should be noted that the fast charge management mode refers to that the vehicle is in the fast charge mode, and when it is detected that the vehicle battery is in the fast charge state, it is determined that the thermal management mode is the fast charge management mode.
It should be noted that the total cooling demand power refers to the system power corresponding to the cooling capacity demand of the current vehicle. During specific implementation, the corresponding total refrigeration demand power can be determined according to the vehicle environment temperature, the battery temperature and the air conditioner set value according to a preset prediction algorithm. For example, when the battery temperature is 40 ℃, the ambient temperature is 36 ℃ and the air conditioner set value is 26 ℃, the total cooling demand power is determined to be 6000W.
Step S405: and searching a compressor rotating speed parameter and an electronic expansion valve opening parameter in a second preset control parameter table according to the total refrigeration demand power and the battery temperature.
It should be noted that, the compressor rotation speed parameter and the electronic expansion valve opening parameter are searched in the second preset control parameter table according to the total refrigeration power demand and the battery temperature, and then the corresponding compressor rotation speed parameter is determined according to the total refrigeration power demand, and then the electronic expansion valve opening parameter is searched in the second preset control parameter table according to the compressor rotation speed parameter and the battery temperature.
In a specific implementation, the second predetermined control parameter can be referred to the following table.
It should be noted that the passenger compartment cooling demand load is used for representing the cooling demand of the passenger compartment, and the larger the value of the cooling demand load is, the larger the demand load is. The smaller the opening of the electronic expansion valve is, the less the refrigerating capacity distributed by the battery system is, and the refrigerating capacity requirement of the passenger compartment is further increased. The numerical values in the table are only an example, and the user may set other numerical values according to the needs of the user, which is not limited in this embodiment.
Step S406: and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
It is understood that the compressor speed control parameter may be used to set a maximum compressor speed of the refrigeration system, and the electronic expansion valve opening parameter may be used to adjust the opening of the electronic expansion valve to a corresponding value.
In a third embodiment, the thermal management mode is a quick charge thermal management mode, and the total refrigeration demand power of the whole vehicle thermal management system is obtained; and searching a compressor rotating speed parameter and an electronic expansion valve opening parameter in a second preset control parameter table according to the total refrigeration demand power and the battery temperature. Therefore, when the battery is charged quickly, the refrigerating system can set proper operation parameters to improve the NVH performance of the refrigerating system.
Referring to fig. 5, fig. 5 is a flowchart illustrating a fourth embodiment of the control method for the vehicle refrigeration system according to the present invention, and the fourth embodiment of the control method for the vehicle refrigeration system according to the present invention is provided based on the first, second, and third embodiments. The present embodiment is explained based on the first embodiment.
In a third embodiment, the thermal management mode is a slow charging management mode, and the step S40 includes:
s407: and judging whether the battery temperature is greater than or equal to the battery safety line temperature.
The slow charge management mode refers to that the vehicle battery is in a slow charge mode, and when the vehicle battery is detected to be in a slow charge state, the thermal management mode is determined to be the fast charge management mode.
The battery safety line temperature is a temperature threshold that does not affect the performance of the battery, and both too high and too low temperatures may adversely affect the performance of the battery and also reduce the service life of the battery. The present embodiment will be described with reference to a high-temperature environment as an example.
S408: and when the temperature of the battery is greater than or equal to the temperature of the safety line of the battery, starting an automatic adjusting system of the electronic expansion valve.
It can be understood that when the temperature of the battery is greater than or equal to the temperature of the safety line of the battery, it indicates that the current temperature is not favorable for the use of the battery, and cooling is needed, and at this time, the battery system is preferentially ensured.
It should be noted that the electronic expansion valve automatic regulating system refers to superheat degree PID regulation. The PID adjustment can stabilize the temperature of the battery system to a preset value. And when the temperature of the battery is higher than the preset temperature, increasing the refrigerating capacity of the battery system so as to reduce the temperature of the battery. In addition, in order to avoid excessive PID adjustment, the opening range of the electronic expansion valve is limited, such as set to 10% to 50%.
S409: and acquiring the opening parameter of the electronic expansion valve output by the automatic adjusting system of the electronic expansion valve.
It can be understood that the electronic expansion valve automatic adjusting system can control the electronic expansion valve in real time, and therefore, the refrigeration system controls the electronic expansion valve according to the electronic expansion valve opening parameter output by the electronic expansion valve automatic adjusting system.
S4010: and taking the opening parameter of the electronic expansion valve and the preset rotating speed parameter of the compressor as control parameters.
It should be noted that, when the temperature of the battery is greater than or equal to the temperature of the battery safety line, the rotation speed of the compressor may be set to a preset value according to the user requirement in order to ensure the refrigeration demand of the battery system. The preset compressor rotation speed parameter can be used for setting the maximum rotation speed of the compressor of the refrigeration system, and the electronic expansion valve opening parameter is used for adjusting the opening of the electronic expansion valve to a corresponding value.
It is understood that when the battery temperature is less than the battery safety line temperature, a certain amount of cooling needs to be allocated according to a specific temperature although the battery temperature is not excessively high. In specific implementation, when the battery temperature is lower than the battery safety line temperature, the relation between the battery temperature and a preset temperature range is judged. When the battery temperature is in a second battery temperature range, acquiring the total refrigeration power requirement of the whole vehicle thermal management system; wherein the temperatures in the second battery temperature range are all less than the battery safety line temperature; determining a compressor rotation speed parameter according to the total refrigeration demand power; acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a third preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of the compressor; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
In order to make the table lookup accurate, the first battery temperature range is divided into a plurality of word temperature ranges, such as [ t10, t11], [ t12, t13], [ t14, t15] in the present embodiment. The higher the total power required for cooling, the higher the compressor speed parameter. When the total power required for cooling is greater than the maximum total power and the battery temperature is between [ t10, t11], the compressor rotation speed is set to the preset maximum rotation speed S9. When the total power of the refrigeration demand is less than or equal to the maximum total power, the rotating speeds of different compressors are set according to different total powers of the demand, and therefore the opening degree parameter of the electronic expansion valve is searched in a first preset control parameter table.
It should be noted that the passenger compartment cooling demand load is used for representing the cooling demand of the passenger compartment, and the larger the value of the cooling demand load is, the larger the demand load is. The smaller the opening of the electronic expansion valve is, the less the refrigerating capacity distributed by the battery system is, and the refrigerating capacity requirement of the passenger compartment is further increased. The numerical values in the table are only an example, and the user may set other numerical values according to the needs of the user, which is not limited in this embodiment.
In a fourth embodiment, the thermal management mode is a slow charge thermal management mode, and a cooling capacity distribution strategy is determined by judging whether the temperature of the battery is greater than or equal to the temperature of a battery safety line; when the temperature of the battery is higher than or equal to the safety line temperature of the battery, the system is automatically adjusted through the electronic expansion valve to ensure the safety of the battery system, and when the temperature of the battery is lower than the safety line temperature of the battery, different compressor control parameters and electronic expansion valve control parameters are determined according to the total power required by refrigeration. Therefore, when the battery is charged quickly, the refrigerating system can set proper operation parameters to improve the NVH performance of the refrigerating system.
In addition, to achieve the above object, the present invention also provides a storage medium having a vehicle refrigeration system control program stored thereon, which when executed by a processor implements the steps of the vehicle refrigeration system control method as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In addition, in order to achieve the purpose, the invention also provides a vehicle refrigeration system control device. Referring to fig. 6, fig. 6 is a block diagram showing the configuration of the first embodiment of the control apparatus for a vehicle refrigeration system according to the present invention.
In this embodiment, the vehicle refrigeration system control device includes:
and the thermal management mode confirming module 10 is used for acquiring the operation information of the target vehicle and determining the thermal management mode according to the operation information.
The target vehicle is a vehicle that needs cooling by a current vehicle cooling system. The refrigerating area of the target vehicle mainly comprises a passenger cabin and a battery system, and refrigerating capacity generated by the refrigerating system can be transmitted to the passenger cabin and the battery system through an electronic expansion valve. Meanwhile, the refrigerating capacity of each part of the passenger compartment and the battery system can be distributed by controlling the opening degree of the electronic expansion valve.
It should be noted that the operation information generally includes a cooling requirement of the passenger compartment (such as an air conditioning mode, a temperature, an air volume, and the like), a driving intention (such as a vehicle speed, an acceleration, a braking, and the like), or a usage scenario (such as a driving, a charging, an idling stop, and the like), and may also include other information, which is not limited in this embodiment.
It should be noted that different thermal management modes are provided under different operating conditions in order to ensure proper control of the refrigeration system. Typical vehicle thermal management modes may include: an independent battery system thermal management mode, wherein only the battery system has thermal management requirements; an independent passenger compartment thermal management mode, wherein only the passenger compartment has thermal management requirements; the battery system and the passenger cabin are in a coupling heat management mode, and in the mode, the battery and the passenger cabin are in heat management coupling, so that the heat management requirements of two systems are met simultaneously; the mode can be divided into three sub-modes, namely a discharge heat management mode, a fast charge heat management mode and a slow charge heat management mode.
It should be appreciated that the operating information of the vehicle corresponds to different operating conditions of the vehicle, and the thermal management mode is determined based on the operating conditions. For example, when the passenger compartment is detected to have a cooling demand and the battery system is turned off, the corresponding heat management mode of the vehicle is indicated as the independent passenger compartment heat management mode. When the passenger compartment and the battery system are detected to have cooling requirements, the corresponding thermal management mode of the vehicle is a coupling thermal management mode.
And a control policy determining module 20, configured to determine a corresponding control policy according to the thermal management mode.
It should be noted that, since the cooling capacity generated by the cooling system is limited, and the space with the cooling capacity requirement includes the passenger compartment and the battery system, different control strategies are provided in different modes to meet the cooling requirement of the passenger compartment or the battery system. The control strategy may refer to a passenger compartment and battery system allocation strategy, such as passenger compartment override or battery system override.
And the parameter acquisition module 30 is used for acquiring the temperature of the battery.
The battery temperature may be a real-time temperature of the vehicle battery, or may be a maximum temperature of the vehicle battery over a period of time. The battery temperature of the automobile battery can be acquired through the temperature sensor arranged in the battery system.
And the control parameter confirming module 40 is used for confirming corresponding control parameters according to the battery temperature and the control strategy.
It will be appreciated that the higher the battery temperature, the greater the amount of refrigeration required; the lower the battery temperature, the less cooling capacity is required. In order to ensure the normal operation of the automobile, the cooling capacity supply of the battery system is preferentially ensured in the embodiment.
It should be noted that the control parameters generally include a compressor speed control parameter and an electronic expansion valve control parameter. The speed of the compressor can affect the total refrigeration generated by the refrigeration system and the electronic expansion valve can regulate the amount of refrigeration distributed to the passenger compartment and the battery system.
It will be appreciated that the compressor speed control parameter and the electronic expansion valve control parameter have different values for different thermal management modes and different battery temperatures. For example, a higher battery temperature or a lower passenger compartment air conditioning temperature setting may indicate that the refrigeration system needs to generate more cooling capacity and, correspondingly, a higher compressor speed. The specific value of the control parameter can be freely set according to the requirement of the user, and this embodiment is not limited to this.
And the control module 50 is used for controlling the target vehicle refrigeration system according to the control parameters.
It should be noted that, the controlling the target vehicle refrigeration system according to the control parameter may be adjusting a parameter of a corresponding device in the vehicle refrigeration system according to the control parameter. For example, the opening degree of the electronic expansion valve is adjusted according to the electronic expansion valve control parameter; or controlling the maximum rotating speed of the compressor of the refrigeration system according to the rotating speed control parameter of the compressor.
In the embodiment, a thermal management mode is determined by acquiring the operation information of a target vehicle and according to the operation information; determining a corresponding control strategy according to the thermal management mode; acquiring the temperature of the battery; determining corresponding control parameters according to the battery temperature and the control strategy; and controlling the target vehicle refrigeration system according to the control parameters. According to the embodiment, the vehicle refrigeration system is controlled according to different heat management modules of the vehicle, so that the vehicle refrigeration system has appropriate control parameters under different heat management models, the situation that the NVH performance of the vehicle refrigeration system is influenced due to the fact that the refrigeration system runs without limitation is avoided, and the NVH performance of the whole vehicle can be improved.
In one embodiment, the thermal management mode is a discharge thermal management mode; the control parameter confirmation module 40 is further configured to determine whether the battery temperature is greater than or equal to a battery safety line temperature; when the temperature of the battery is greater than or equal to the temperature of the battery safety line, acquiring the speed of the target vehicle, and determining a compressor rotating speed parameter and an electronic expansion valve opening parameter according to the speed; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
In an embodiment, the control parameter confirmation module 40 is further configured to, when the battery temperature is less than a first preset battery temperature, obtain an ambient temperature of an environment where the target vehicle is located and a motor rotation speed of the target vehicle; wherein the first preset battery temperature is less than the battery safety line temperature; and when the environment temperature is less than or equal to a preset environment temperature and the motor rotating speed is less than or equal to a preset motor rotating speed, closing a battery electromagnetic valve of the target vehicle.
In an embodiment, the control parameter confirmation module 40 is further configured to obtain a total power required by the overall vehicle thermal management system when the battery temperature is within a first battery temperature range; wherein the temperatures in the first battery temperature range are all less than the battery safety line temperature; determining a compressor rotation speed parameter according to the total refrigeration demand power; acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a first preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of a compressor; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
In one embodiment, the thermal management mode is a fast charge management mode; the control parameter confirmation module 40 is further configured to obtain the total refrigeration demand power of the entire vehicle thermal management system; searching a compressor rotating speed parameter and an electronic expansion valve opening parameter in a second preset control parameter table according to the total refrigeration demand power and the battery temperature; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
In one embodiment, the thermal management mode is a trickle charge management mode; the control parameter confirmation module 40 is further configured to determine whether the battery temperature is greater than or equal to a battery safety line temperature; when the temperature of the battery is greater than or equal to the temperature of the safety line of the battery, starting an automatic adjusting system of an electronic expansion valve; acquiring an opening parameter of the electronic expansion valve output by the automatic adjusting system of the electronic expansion valve; and taking the opening parameter of the electronic expansion valve and the preset rotating speed parameter of the compressor as control parameters.
In an embodiment, the control parameter confirmation module 40 is further configured to obtain a total power required by the cooling of the entire vehicle thermal management system when the battery temperature is within a second battery temperature range; wherein the temperatures in the second battery temperature range are all less than the battery safety line temperature; determining a compressor rotation speed parameter according to the total refrigeration demand power; acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a third preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of the compressor; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
Other embodiments or specific implementation manners of the vehicle refrigeration system control device according to the present invention may refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A vehicle refrigeration system control method, characterized by comprising the steps of:
the method comprises the steps of obtaining operation information of a target vehicle, and determining a thermal management mode according to the operation information, wherein the thermal management mode comprises a discharge thermal management mode, a fast charge thermal management mode and a slow charge thermal management mode;
determining a corresponding control strategy according to the thermal management mode;
acquiring the temperature of the battery;
determining corresponding control parameters according to the battery temperature and the control strategy, wherein the control parameters comprise the rotating speed of a compressor and the opening degree of an electronic expansion valve, and the electronic expansion valve is used for adjusting the refrigerating capacity distributed to a passenger compartment and a battery system;
controlling a target vehicle refrigeration system according to the control parameters;
the step of determining the corresponding control parameter according to the battery temperature and the control strategy comprises:
when the thermal management mode is a discharge thermal management mode, judging whether the battery temperature is greater than or equal to the battery safety line temperature;
when the temperature of the battery is greater than or equal to the temperature of the battery safety line, acquiring the speed of the target vehicle, and determining a compressor rotating speed parameter and an electronic expansion valve opening parameter according to the speed;
taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters;
after judging whether the battery temperature is greater than or equal to the battery safety line temperature when the thermal management mode is the discharge thermal management mode, the method further comprises the following steps:
when the battery temperature is lower than a first preset battery temperature, acquiring the ambient temperature of the environment where the target vehicle is located and the motor rotating speed of the target vehicle; wherein the first preset battery temperature is less than the battery safety line temperature;
when the environment temperature is less than or equal to a preset environment temperature and the motor rotating speed is less than or equal to a preset motor rotating speed, closing a battery electromagnetic valve of the target vehicle;
after judging whether the battery temperature is greater than or equal to the battery safety line temperature when the thermal management mode is the discharge thermal management mode, the method further comprises the following steps:
when the battery temperature is in a first battery temperature range, acquiring the total refrigeration power requirement of the whole vehicle thermal management system; wherein the temperatures in the first battery temperature range are all less than the battery safety line temperature;
determining a compressor rotation speed parameter according to the total refrigeration demand power;
acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a first preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of a compressor;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
2. A vehicle refrigeration system control method as set forth in claim 1 wherein said step of determining a corresponding control parameter based on said battery temperature and a control strategy comprises:
when the heat management mode is a quick charge heat management mode, acquiring the total refrigeration demand power of the whole vehicle heat management system;
searching a compressor rotating speed parameter and an electronic expansion valve opening parameter in a second preset control parameter table according to the total refrigeration demand power and the battery temperature;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
3. A vehicle refrigeration system control method as set forth in claim 1 wherein said step of determining a corresponding control parameter based on said battery temperature and a control strategy comprises:
when the thermal management mode is a slow charging thermal management mode, judging whether the battery temperature is greater than or equal to the battery safety line temperature;
when the temperature of the battery is greater than or equal to the temperature of the safety line of the battery, starting an automatic adjusting system of an electronic expansion valve;
acquiring an opening parameter of the electronic expansion valve output by the automatic adjusting system of the electronic expansion valve;
and taking the opening parameter of the electronic expansion valve and the preset rotating speed parameter of the compressor as control parameters.
4. A vehicle refrigeration system control method as set forth in claim 3, wherein after determining whether the battery temperature is greater than or equal to a battery safety line temperature when the thermal management mode is a slow charge thermal management mode, the method further includes:
when the battery temperature is in a second battery temperature range, acquiring the total refrigeration power requirement of the whole vehicle thermal management system; wherein the temperatures in the second battery temperature range are all less than the battery safety line temperature;
determining a compressor rotation speed parameter according to the total refrigeration demand power;
acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a third preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of the compressor;
and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
5. A vehicle refrigeration system control apparatus characterized by comprising: a memory, a processor, and a vehicle refrigeration system control program stored on the memory and executable on the processor, the vehicle refrigeration system control program when executed by the processor implementing the steps of the vehicle refrigeration system control method as recited in any of claims 1-4.
6. A storage medium, characterized in that the storage medium has stored thereon a vehicle refrigeration system control program that, when executed by a processor, implements the steps of the vehicle refrigeration system control method according to any one of claims 1 to 4.
7. A vehicle refrigeration system control apparatus, characterized by comprising:
the system comprises a thermal management mode confirming module, a data processing module and a data processing module, wherein the thermal management mode confirming module is used for acquiring the operation information of a target vehicle and determining a thermal management mode according to the operation information, and the thermal management mode comprises a discharge thermal management mode, a fast charge thermal management mode and a slow charge thermal management mode;
the control strategy determining module is used for determining a corresponding control strategy according to the thermal management mode;
the parameter acquisition module is used for acquiring the temperature of the battery;
the control parameter confirmation module is used for determining corresponding control parameters according to the battery temperature and the control strategy, wherein the control parameters comprise the rotating speed of a compressor and the opening degree of an electronic expansion valve, and the electronic expansion valve is used for adjusting the refrigerating capacity distributed to a passenger compartment and a battery system;
the control module is used for controlling the target vehicle refrigeration system according to the control parameters;
the control parameter confirmation module is further configured to determine whether the battery temperature is greater than or equal to a battery safety line temperature when the thermal management mode is a discharge thermal management mode; when the temperature of the battery is greater than or equal to the temperature of the battery safety line, acquiring the speed of the target vehicle, and determining a compressor rotating speed parameter and an electronic expansion valve opening parameter according to the speed; taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters;
the control parameter confirmation module is further used for acquiring the environment temperature of the environment where the target vehicle is located and the motor rotating speed of the target vehicle when the battery temperature is lower than a first preset battery temperature; wherein the first preset battery temperature is less than the battery safety line temperature; when the environment temperature is less than or equal to a preset environment temperature and the motor rotating speed is less than or equal to a preset motor rotating speed, closing a battery electromagnetic valve of the target vehicle;
the control parameter confirmation module is further used for acquiring the total refrigeration power requirement of the whole vehicle heat management system when the battery temperature is in a first battery temperature range; wherein the temperatures in the first battery temperature range are all less than the battery safety line temperature; determining a compressor rotation speed parameter according to the total refrigeration demand power; acquiring refrigerating capacity demand load of a passenger compartment, and searching an opening parameter of an electronic expansion valve in a first preset control parameter table according to the refrigerating capacity demand load and the rotating speed parameter of a compressor; and taking the rotating speed parameter of the compressor and the opening parameter of the electronic expansion valve as control parameters.
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| CN112622561B (en) * | 2020-12-18 | 2022-09-13 | 长城汽车股份有限公司 | Passenger compartment and battery cooling method and device and vehicle |
| CN113071287A (en) * | 2021-04-21 | 2021-07-06 | 吉林大学 | Fuel cell thermal management mode switching and control method |
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| CA2763487A1 (en) * | 2009-05-29 | 2010-12-02 | Parker Hannifin Corporation | Pumped loop driven vapor compression cooling system |
| CN104924872B (en) * | 2015-06-25 | 2017-07-07 | 厦门金龙联合汽车工业有限公司 | A kind of air conditioning control method based on car networking technology |
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| CN106598094B (en) * | 2016-11-18 | 2018-08-03 | 惠州市德赛西威汽车电子股份有限公司 | A kind of control system and method for outer control variable displacement compressor |
| CN109599617B (en) * | 2017-09-30 | 2021-01-19 | 比亚迪股份有限公司 | Temperature adjusting method and temperature adjusting system for vehicle-mounted battery |
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