CN113895315B - Vehicle heating control method, system, device, equipment and storage medium - Google Patents
Vehicle heating control method, system, device, equipment and storage medium Download PDFInfo
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- CN113895315B CN113895315B CN202111155466.5A CN202111155466A CN113895315B CN 113895315 B CN113895315 B CN 113895315B CN 202111155466 A CN202111155466 A CN 202111155466A CN 113895315 B CN113895315 B CN 113895315B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 251
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000001816 cooling Methods 0.000 claims description 32
- 238000004590 computer program Methods 0.000 claims description 20
- 238000005057 refrigeration Methods 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 6
- 230000000875 corresponding effect Effects 0.000 description 57
- 230000006870 function Effects 0.000 description 14
- 238000004891 communication Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000007599 discharging Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 239000004606 Fillers/Extenders Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010022562 Intermittent claudication Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 208000024980 claudication Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
- B60L58/27—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 heating
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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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The embodiment of the application provides a vehicle heating control method, a system, a device, equipment and a storage medium. According to the embodiment of the application, the current working condition of the vehicle can be determined according to the use state of the vehicle, and the heating priority of the power battery and the cockpit corresponding to the current working condition of the vehicle can be determined based on the heating priority sequence of the power battery and the cockpit under each working condition; furthermore, the heat required by the heating priority can be provided for the power battery and the cockpit according to the heating priority of the power battery and the cockpit so as to reasonably distribute the heat for the power battery and the cockpit.
Description
Technical Field
The present application relates to the field of electric vehicles, and in particular, to a vehicle heating control method, system, device, equipment, and storage medium.
Background
In the use scene of electric automobile, power battery is as the power supply of electric automobile, and its performance plays crucial effect to electric automobile's running state. Since the charge and discharge capacity of the battery is affected by temperature, in the case where the temperature of the power battery is lower than its proper temperature range, the charge and discharge capacity of the power battery may be lowered. Therefore, it is necessary to heat the power battery to raise the temperature of the power battery to ensure the charge and discharge capability of the power battery.
In addition, the cabin of the electric automobile is adjusted to have the heating condition, and under the condition that the power battery and the cabin are heated, how to reasonably distribute the heat required by the power battery and the cabin is a basis for ensuring the comfort of the cabin and the service performance of the power battery.
Disclosure of Invention
Aspects of the present application provide a vehicle heating control method, system, apparatus, device, and storage medium for reasonably distributing heat required by each of a power battery and a cockpit, so as to ensure usability of the power battery and comfort of the cockpit.
The embodiment of the application provides a vehicle heating control method, which comprises the following steps: determining the current working condition of a vehicle according to the use state of the vehicle; determining the heating priority of a power battery and a cabin in the vehicle according to the current working condition; and providing heat required by heating for the power battery and the cockpit according to the heating priority.
In an alternative embodiment, determining the current working condition of the vehicle according to the use state of the vehicle comprises: identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or acquiring the starting state of the vehicle from the driving system, and determining whether the current working condition of the vehicle is a driving working condition.
In an alternative embodiment, determining the heating priority of the power battery and the cabin in the vehicle according to the current working condition includes: acquiring a priority sequence of a predefined power battery and a predefined cockpit under each working condition; and determining the heating priority of the power battery and the cockpit of the vehicle under the current working condition.
In an alternative embodiment, providing the power battery and the cockpit with heat required for heating according to the heating priority comprises: determining a target opening of a three-way valve in a heating loop according to the heating priority; and controlling and adjusting the three-way valve to the target opening degree, and providing heat required by heating for the power battery and the cockpit.
In an alternative embodiment, determining the target opening of the three-way valve in the heating circuit according to the heating priority includes: collecting the temperature difference of the battery core of the power battery as a first temperature; collecting the temperature of a battery loop as a second temperature; if the heating priority of the power battery is the same as that of the cockpit, determining the target opening of a three-way valve in a heating loop according to the first temperature and the second temperature; if the heating priorities of the power battery and the cockpit are different, acquiring the temperature of the heating loop as a third temperature; and determining the target opening degree of the three-way valve in the heating loop according to the first temperature, the second temperature and the third temperature.
In an alternative embodiment, determining the target opening of the three-way valve in the heating circuit according to the first temperature and the second temperature includes: acquiring a first corresponding relation between a predefined battery cell temperature difference range and the opening of the three-way valve; determining a battery cell target temperature difference range corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the battery cell target temperature difference range as a first opening; a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve is predefined; determining a target temperature range corresponding to the second temperature from the second correspondence; taking the opening corresponding to the target temperature range as a second opening; and selecting the target opening of the three-way valve in the heating loop, which is the smallest opening value, from the first opening and the second opening.
In an alternative embodiment, determining the target opening of the three-way valve in the heating circuit according to the first temperature, the second temperature and the third temperature includes: determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening of the three-way valve according to the heating priority; determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third correspondence; taking the opening corresponding to the target temperature range of the battery loop and the target temperature range of the heating loop as a third opening; and selecting the target opening of the three-way valve in the heating circuit, wherein the target opening is the minimum opening value from the first opening, the second opening and the third opening.
The embodiment of the application also provides a vehicle control system, which comprises: the heating loop is used for providing heat required by heating for the power battery and the cockpit; and the whole vehicle controller is used for realizing the steps in the method and controlling the heating loop to provide heat required by heating for the power battery and the cockpit.
In an alternative embodiment, the vehicle control system further includes a refrigeration circuit for providing the power battery and the cabin with a refrigerant required for cooling.
The embodiment of the application also provides a vehicle heating control device, which comprises: the first determining module is used for determining the current working condition of the vehicle according to the using state of the vehicle; the second determining module is used for determining the heating priority of the power battery and the cockpit in the vehicle according to the current working condition; and the heating module is used for providing heat required by heating for the power battery and the cockpit according to the heating priority.
The embodiment of the application also provides vehicle-mounted equipment, which comprises: a memory and a processor; the memory is used for storing one or more computer instructions; the processor is configured to execute the one or more computer instructions to implement the steps in the method as described.
The embodiments of the present application also provide a computer readable storage medium storing a computer program which, when executed, implements steps as in the method.
In the embodiment of the application, the current working condition of the vehicle can be determined according to the using state of the vehicle, and further, the heating priority of the power battery and the cabin in the vehicle can be determined according to the current working condition of the vehicle; further, the required heat is determined for the power battery and the cockpit according to the heating priority of the power battery and the cockpit so as to reasonably distribute the heat to the power battery and the cockpit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a flow chart of a vehicle heating control method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a vehicle control system according to an embodiment of the present application;
Fig. 3 is a schematic structural diagram of a vehicle-mounted device according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of a vehicle heating control device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The power battery is used as a power source in the electric automobile, and the charging and discharging capabilities of the power battery influence the functions of a plurality of vehicle components in the electric automobile, so that the power battery is particularly important to exert the optimal charging and discharging capabilities of the power battery in order to ensure the normal operation of all the vehicle components in the electric automobile. Since the charge and discharge capacity of the power battery is reduced at high or low temperatures, maintaining the temperature of the power battery within a proper range is critical to ensure that the power battery exhibits optimal charge and discharge capacity. Generally, an electric vehicle includes an energy management system for dynamically adjusting the temperature of a power battery to reduce the temperature of the power battery when the temperature of the power battery is higher than a proper temperature range; and heating the power battery when the temperature of the power battery is lower than the proper temperature range, so that the temperature of the power battery is kept within the proper temperature range, and the optimal charge and discharge capability is exerted.
In addition, in the electric vehicle, the cabin also has a heating requirement or a cooling requirement, and the air conditioner can output cool air or hot air into the cabin according to the requirement of a user. In the case of a cabin having a cooling or heating demand, the vehicle control system may provide it with the cooling or heating heat required for cooling to achieve the cooling or heating demand.
In the embodiment of the application, the conditions that the power battery in the electric automobile needs to be heated and the cockpit needs to be heated are called that the electric automobile has a heating requirement, and the conditions that the power battery in the electric automobile needs to be cooled and the cockpit needs to be cooled are called that the electric automobile has a cooling requirement. For electric vehicles, it may happen that the power battery and the cabin have both heating and cooling requirements. Taking the example that the power battery and the cockpit are provided with heating requirements, under the condition that the heat provided by the electric automobile is certain, how to reasonably distribute the respective required heat for the power battery and the cockpit is the basis for ensuring the service performance of the power battery and the comfort of the cockpit.
Based on the above, the embodiment of the application provides a vehicle heating control method which is suitable for a whole vehicle controller of an electric vehicle under the condition that both a power battery and a cockpit have heating requirements, so as to reasonably distribute the respective required heat for the power battery and the cockpit.
Fig. 1 is a flowchart of a vehicle heating control method according to an embodiment of the present application, as shown in fig. 1, the method includes:
S1, determining the current working condition of a vehicle according to the use state of the vehicle;
S2, determining the heating priority of a power battery and a cockpit in the vehicle according to the current working condition;
And S3, providing heat required by heating for the power battery and the cockpit according to the heating priority.
In the embodiment of the application, the current working condition of the electric automobile refers to a current state of the electric automobile in the using process, and the mode of determining the current working condition of the electric automobile is not limited in the embodiment of the application. In an alternative embodiment, the current working condition of the electric vehicle may be determined according to the charging mode of the electric vehicle or the starting state of the vehicle. For example, determining whether the current working condition of the electric vehicle is a charging working condition by identifying a charging mode corresponding to a charging port of the electric vehicle; or acquiring the starting state of the vehicle from the driving system, and determining whether the current working condition of the electric automobile is a driving working condition.
For example, if the charging mode corresponding to the charging port of the electric vehicle is any one of the charging modes of the ac slow charge 8A, the ac slow charge 13A, the ac slow charge 32A and the dc charging mode, the current working condition of the electric vehicle is determined to be the charging working condition corresponding to the current charging mode. If the charging mode corresponding to the charging port of the electric automobile is the non-external charging mode, the electric automobile can be determined to be not charged currently, a vehicle starting state is obtained from a driving system of the electric automobile, and whether the vehicle starting state is a ready state or not is determined; if yes, determining the current working condition of the electric automobile as a running working condition; the vehicle start state is a ready state, which means a state that the electric vehicle is ready for running.
In another alternative embodiment, the current working condition of the electric automobile can be determined according to the working state of the vehicle component in the electric automobile; for example, for a range extender electric vehicle, the current working conditions of the electric vehicle can be divided into working conditions of the range extender and non-working conditions of the range extender according to the working state of the range extender.
In another alternative embodiment, the current working condition of the electric automobile can be determined according to the energy demand state of the vehicle component in the electric automobile; for example, the power battery and/or the cockpit currently has a heating requirement, and the current working condition of the electric automobile can be called a heating working condition; for another example, the power battery and/or the cockpit currently has a refrigeration requirement, and the current working condition of the electric automobile can be called a refrigeration working condition.
In another alternative embodiment, the energy management system may provide different energy management modes to the power battery based on the heating or cooling requirements of the power battery at different temperatures, based on which the current operating conditions of the electric vehicle may also be determined from the energy management mode perspective. For example, when the temperature of the power battery is in the range of 20-35 ℃, the charging and discharging capacity and the service life of the power battery are optimal, and the power battery does not need to be heated or refrigerated at the moment; alternatively, the condition where the temperature of the power cell is in the temperature range of 20 ℃ to 35 ℃ may be referred to as a no heating/cooling condition.
For example, when the temperature of the power battery is within the range of-10 ℃ to 20 ℃, the service life of the power battery is not affected, but the charge and discharge capacity of the power battery is poor, and the power battery needs to be heated to a light degree; alternatively, the condition of the power battery corresponding to the temperature of-10 ℃ to 20 ℃ can be called a weak heating condition. For another example, when the temperature of the power battery is in the range of 35-45 ℃, the charging and discharging capacity and the service life of the power battery are slightly influenced, and the power battery needs to be refrigerated to a light degree; alternatively, the condition of the power battery corresponding to the temperature of 35-45 ℃ can be called a weak refrigeration condition.
For example, when the temperature of the power battery is within the range of minus 30 ℃ to minus 10 ℃, the service life of the power battery is not affected, but the charging and discharging capacities of the power battery are poor, overcharge is easy to occur, and the power battery needs to be heated to a high degree; alternatively, the condition of the power battery corresponding to the temperature range of-30 ℃ to-10 ℃ can be called a strong heating condition. For example, when the temperature of the power battery is within the range of 45-55 ℃, the service life of the power battery is shortened, the charging and discharging capability is poor, the electric automobile is easy to claudication, and the power battery needs to be refrigerated to a stronger degree; alternatively, the condition of the power battery corresponding to the temperature of 45-55 ℃ can be called forced cooling condition.
In another optional embodiment, the current working condition of the electric vehicle may be determined according to a State of Charge (SOC) of the power battery, that is, a remaining power, and optionally, the SOC range of the electric vehicle may be divided according to a range capability of the electric vehicle. For example, the division is performed according to SOC < 20% and SOC of 20% +.; the SOC is less than 20% and the driving range of the electric automobile is lower, the working condition corresponding to the SOC range can be called as a low-energy working condition, the SOC is 20% or less and the driving range of the electric automobile is normal, and the working condition corresponding to the SOC range can be called as a normal working condition.
It should be noted that the working conditions of the electric vehicle are only exemplary, and are not limited thereto. In addition, various working conditions of the electric automobile are not independent, and the electric automobile can have various working conditions at the same time within the same time range. For example, the electric vehicle may have a heating condition or a cooling condition at the same time under a charging condition or a driving condition.
In the embodiment of the application, the vehicle performance of the electric vehicle can be divided into power performance, energy management performance, cockpit comfort performance, economic performance and power battery service performance from the aspects of power performance, energy management, cockpit comfort, economical efficiency, power battery service life, charge and discharge capacity and the like of the electric vehicle. It should be noted that these vehicle performances are not related in any case, and the vehicle performances related to the electric vehicle under different working conditions may be different, and may be one or more. Further, the extent to which an electric vehicle may be required for the same vehicle performance may vary from one operating condition to another.
For example, in an electric vehicle under a charging condition, there are relatively few vehicle components in an operating state in the electric vehicle, and since the charging and discharging capability of the power battery is obviously affected by temperature, in order to ensure the charging effect of the power battery, the energy management performance may be determined as the vehicle performance with the highest priority. For another example, in the running condition of the electric vehicle, the dynamic performance plays a decisive role with respect to other vehicle performances, and therefore, the dynamic performance may be regarded as the vehicle performance with the highest priority.
Alternatively, the power cell may have a refrigeration requirement in this case, provided that the ambient temperature is high under the above-mentioned charging conditions, which may affect the temperature of the power cell above its suitable temperature range; while the cockpit also has refrigeration requirements in order to ensure comfort in the cockpit under high temperature conditions. However, the power battery directly affects its charge and discharge capability at high temperatures, which may affect the functions of other vehicle components, and therefore, the cooling requirement of the power battery should be preferentially ensured compared to the cooling requirement of the cockpit, that is, the cooling priority of the power battery is higher than that of the cockpit.
Optionally, in the above driving condition, if the current temperature of the power battery is the suitable temperature for the power battery to operate or the external temperature has less influence on the service performance of the power battery, but the temperature in the cockpit is higher for the user. In this case, the power battery does not have a cooling requirement, but in order to ensure comfort in the cockpit in a high temperature environment, the cockpit has a cooling requirement, and therefore, the cooling requirement of the cockpit should be preferentially ensured compared with that of the power battery, that is, the cooling priority of the cockpit is higher than that of the power battery.
Based on the above, the embodiment of the application can predefine the priority among the vehicle performances under different working conditions of the electric vehicle, so that under the condition of determining the current working condition of the electric vehicle, the priority of the vehicle performances under the current working condition of the electric vehicle can be determined by combining the predefine priority of the vehicle performances under the working conditions of the electric vehicle, and further the heating priority of the power battery and the cabin can be determined.
In an embodiment of the application, the vehicle control system may provide the power battery and/or the cabin with the heat required for heating according to the heating requirements of the power battery and/or the cabin, respectively. The vehicle control system comprises a heating loop, wherein the heating loop is connected with a battery loop where the power battery is arranged through a three-way valve, and the heating loop can provide heat with different proportions for the battery loop by changing the opening degree of the three-way valve.
Based on the method, the opening of the three-way valve matched with the power battery can be predefined according to different heating requirements of the power battery, the target opening of the three-way valve in the heating loop is determined according to the heating priority of the power battery and the cockpit, and the three-way valve is controlled to be adjusted to the target opening so that the heating loop can provide heat required by heating for the power battery and the cockpit according to the heating priority of the power battery and the cockpit.
In the use of the power battery, the temperature difference between each electric core can not be too large when the power battery works normally, if a large temperature difference exists between each electric core, the fact that the temperature of each electric core in the power battery is too high or too low indicates that the power battery needs to be cooled or heated, and the electric core temperature difference of the power battery reflects the heating requirement of the power battery to a certain extent. Alternatively, the corresponding relationship between the opening of the three-way valve in the heating loop and the temperature difference range t1 of the battery cell of the power battery can be predefined according to the temperature difference of the battery cell of the power battery under different heating requirements as shown in table 1; the larger the opening value of the three-way valve is, the more heat is provided to the battery loop by the heating loop. Further, according to the collected temperature difference of the battery cells of the power battery, the first opening corresponding to the three-way valve in the heating loop can be determined from table 1.
TABLE 1
| Cell temperature difference t1 | Three-way valve opening |
| t1≤3℃ | 100％ |
| 3℃<t1≤5℃ | 80％ |
| 5℃<t1≤7℃ | 55％ |
| 7℃<t1≤9℃ | 30％ |
| 9℃<t1≤11℃ | 20％ |
| 11℃<t1 | 0％ |
In addition, the temperature of the battery circuit in which the power battery is located also affects whether the power battery has a heating requirement. For example, if the current temperature of the power battery is in a suitable temperature range, but the temperature of the battery circuit is lower than the suitable temperature range of the power battery, the temperature of the power battery may gradually decrease and eventually lower than the suitable temperature range of the power battery without adjusting the temperature of the battery circuit, in which case it may be determined that the power battery has a heating requirement.
Alternatively, the corresponding relationship between the opening of the three-way valve in the heating circuit and the temperature range t2 of the battery circuit shown in table 2 may be predefined according to the temperature of the battery circuit of the power battery under the heating requirement; the larger the opening value of the three-way valve is, the more heat is provided to the battery loop by the heating loop. Further, according to the collected temperature of the battery loop, a second opening corresponding to the three-way valve in the heating loop can be determined.
TABLE 2
| Battery loop temperature t2 | Three-way valve opening |
| t2≤20℃ | 100％ |
| 20℃<t2≤48℃ | 100％ |
| 48℃<t2≤50℃ | 80％ |
| 51℃<t2≤53℃ | 55％ |
| 53℃<t2 | 30％ |
Further alternatively, when determining the target opening of the three-way valve in the heating circuit, the temperature difference of the battery core of the power battery and the temperature of the battery circuit where the power battery is located can be collected as the first temperature and the second temperature. Further, the target opening K of the three-way valve in the heating circuit may be determined in combination with the heating priorities of the power battery and the cabin.
In an alternative embodiment, when the heat provided by the electric automobile is enough to meet the heating requirements of the power battery and the cockpit, the heating priorities of the power battery and the cockpit are considered to be the same, and the opening of the three-way valve corresponding to the heating priority can be determined directly according to the heating requirements of the power battery. Optionally, a target temperature difference range of the battery cell where the first temperature is located may be determined from table 1, and an opening of the three-way valve corresponding to the target temperature difference range of the battery cell is taken as the first opening k1; and determining a target temperature range of the battery circuit in which the second temperature is located from table 2, and taking the opening of the three-way valve corresponding to the target temperature range of the battery circuit as a second opening k2. Further, in order to satisfy the heating requirement of the power battery in both the cell temperature difference and the battery circuit temperature, the target opening K of the three-way valve in the heating circuit with the smallest opening value may be selected from the first opening K1 and the second opening K2.
In the heating requirement scene of the power battery, the heating loop can provide heat required by heating for the cockpit, and then the temperature of the heating loop can also influence the heating requirement of the power battery. Based on this, in the embodiment of the present application, the correspondence relationship between the temperature range of the battery circuit, the temperature range of the thermal circuit, and the opening of the three-way valve as shown in tables 3 and 4 may be defined according to the influence relationship of different temperature ranges of the battery circuit and different temperature ranges of the heating circuit on the heating requirements of the power battery and the cabin.
Alternatively, in the case where the heating priority of the cabin is higher than that of the power battery, the correspondence relationship among the temperature range of the battery circuit, the temperature range of the thermal circuit, and the opening degree of the three-way valve is shown in table 3; wherein, the temperature t2 of the battery loop is fixed, the higher the temperature t3 of the heating loop is, the larger the opening degree of the three-way valve is; the temperature t3 of the heating loop is fixed, and the higher the temperature t2 of the battery loop is, the larger the opening degree of the three-way valve is; for example, if the temperature t2 of the battery circuit is 15 ℃, the temperature t3 of the heating circuit is 65 ℃, the opening degree of the three-way valve is 7.5%. In the case where the heating priority of the power battery is higher than that of the cabin, the correspondence relationship among the temperature range of the battery circuit, the temperature range of the thermal circuit, and the opening degree of the three-way valve is shown in table 4; the higher the temperature t2 of the battery loop is, the larger the opening of the three-way valve is; the higher the temperature t3 of the heating circuit is, the smaller the opening of the three-way valve is; for example, if the temperature t2 of the battery circuit is 30 ℃, and the temperature t3 of the heating circuit is 70 ℃, the opening degree of the three-way valve is 22.5%.
TABLE 3 Table 3
TABLE 4 Table 4
Based on this, in another alternative embodiment, the heating priority of the power battery and the cockpit are considered to be different in the event that the heat that the electric vehicle can provide is insufficient to meet the heating requirements of both. At this time, the temperature of the heating circuit can be collected as a third temperature, and according to the heating priorities of the power battery and the cockpit, a target temperature range w1 of the battery circuit in which the second temperature is located and a target temperature range w2 of the heating circuit in which the third temperature is located are determined from table 3 or table 4; further, the opening k3 of the three-way valve in the case where the heating priority of the power battery and the cabin is satisfied is determined based on w1 and w 2. Further, in order to satisfy the heating requirements of the power battery and the cabin at the same time in terms of the three aspects of the battery cell temperature difference, the battery circuit temperature and the heating priority, the target opening K of the three-way valve in the heating circuit with the smallest opening value can be selected from the first opening K1, the second opening K2 and the third opening K3.
Based on the above, under the condition that the target opening K of the three-way valve in the heating loop is determined, the three-way valve in the heating loop is adjusted to the target opening K, so that the heating loop can provide heat required by heating for the power battery and the cockpit according to the heating priority of the power battery and the cockpit under the current working condition of the electric automobile, and the heat is reasonably distributed for the power battery and the cockpit under the condition that the heat provided by the electric automobile is certain.
According to the embodiment of the application, the heating priority of the power battery and the cabin in the electric automobile can be determined according to the current working condition of the electric automobile; furthermore, according to the corresponding relation between the heating priority of the power battery and the cockpit and the opening of the three-way valve in the heating loop, the target opening corresponding to the three-way valve can be determined under the condition that the heating priority of the power battery and the cockpit is met; based on the control, the three-way valve is controlled to be adjusted to the target opening degree, and heat required by meeting the heating priority can be provided for the power battery and the cockpit under the current working condition of the electric automobile so as to reasonably distribute the heat for the power battery and the cockpit.
It should be noted that, the execution subjects of each step of the method provided in the above embodiment may be the same device, or the method may also be executed by different devices. For example, the execution subject of step S1 to step S3 may be the device a; for another example, the execution subject of steps S1 and S2 may be device a, and the execution subject of step S3 may be device B; etc.
In addition, in some of the flows described in the above embodiments and the drawings, a plurality of operations appearing in a specific order are included, but it should be clearly understood that the operations may be performed out of the order in which they appear herein or performed in parallel, the sequence numbers of the operations, such as S1, S2, etc., are merely used to distinguish between the various operations, and the sequence numbers themselves do not represent any order of execution. In addition, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first" and "second" herein are used to distinguish different messages, devices, modules, etc., and do not represent a sequence, and are not limited to the "first" and the "second" being different types.
The embodiment of the application also provides a vehicle control system, and fig. 2 is a schematic structural diagram of the thermal management system provided by the embodiment of the application. As shown in fig. 2, the vehicle control system includes a heating circuit; wherein the heating circuit is used for providing the heat required by heating for the power battery and the cockpit. In addition, the vehicle control system further comprises a whole vehicle controller (not shown in fig. 2), and the whole vehicle controller can implement the steps in the method embodiment, and control the heating loop to provide heating required by heating for the power battery and the cockpit. For the specific execution process of the vehicle controller, reference may be made to the above method embodiments, and details are not repeated herein.
The circuit configuration of the vehicle control system and the functions of the vehicle components in each circuit are described below. As shown in fig. 2, the heating circuit comprises a water heater 09 (Water Positive Temperature Coefficient, WPTC), and a heat exchanger 10 and a three-way valve 11; wherein the water heater 09 is used for heating the circulating water in the heating loop and is matched with the heat exchanger 10 to provide heat required by heating for the power battery 05 and/or the cockpit; the three-way valve 11 is arranged between the heating circuit and the battery circuit and is used for communicating the heating circuit and the battery circuit, so that under the condition that the power battery 05 has a heating requirement, the heat of the heating circuit is provided to the battery circuit to heat the power battery 05; in addition, since the opening of the valve port of the three-way valve 11 that communicates the heating circuit and the battery circuit is different, the amount of heat supplied to the battery circuit by the heating circuit per unit time is different, and therefore, by adjusting the opening of the valve port, the proportion of heat supplied to the battery circuit by the heating circuit can be adjusted.
In the embodiment of the present application, the battery circuit is respectively connected to the heating circuit and the cooling circuit, as shown in fig. 2, the three-way valve 11 is disposed at the connection positions of the battery circuit and the heating circuit and the cooling circuit, and is used for switching the connection between the battery circuit and the heating circuit or between the battery circuit and the cooling circuit according to the heating requirement or the cooling requirement of the power battery 05, so that the battery circuit is connected to the heating circuit and the cooling circuit is blocked when the heating requirement exists in the power battery 05, and the battery circuit is connected to the cooling circuit and the heating circuit is blocked when the cooling requirement exists in the power battery 05, so as to realize the heating requirement or the cooling requirement of the power battery 05. As shown in fig. 2, the battery loop also comprises a water pump 1, which is used for providing circulating water for the battery loop and heating or refrigerating the power battery 05 as a medium for transferring energy; the heating circuit also comprises a water pump 2 for supplying the heating circuit with circulating water for transferring heat as a medium in the heating circuit.
In addition, there may be a cooling requirement for the power battery 05 and the cabin, wherein the air conditioner is used as a main vehicle component for changing the temperature of the cabin, and the vehicle control system may further implement a cooling function for the power battery 05 and the air conditioner when there is a cooling requirement for the cabin, and accordingly, the vehicle control system further includes a cooling circuit. As shown in fig. 2, wherein the refrigeration circuit communicates with a battery circuit including a power battery 05 and a circuit in which an air conditioner 06 (Heating Ventilation and Air Conditioning, HVAC) is located, respectively. As shown in fig. 2, the refrigeration circuit includes a compressor 01, a condenser 02, an electronic expansion valve 03 (Electronic expansion Valve, EXV), and a battery cooler 04 (Chiller); wherein, the compressor 01, the condensers 02 and Chiller are matched with the refrigerant required for providing refrigeration for the power battery 05 and/or the air conditioner 06; the electronic expansion valve 03 plays a role in throttle control, and when the valve ports of the electronic expansion valve 03 correspond to different openings, the flow rate ratio of the refrigerant distributed to the power battery 05 and the air conditioner 06 can be adjusted.
As shown in fig. 2, the vehicle control system further includes a solenoid valve 07 and a mechanical expansion valve 08; the electromagnetic valve 07 corresponds to a switch between the refrigeration loop and the air conditioner 06, so that when the air conditioner 06 has refrigeration requirement, the electromagnetic valve is opened according to a control instruction and introduces the refrigerant into the air conditioner 06, so that the air conditioner 06 realizes the refrigeration function; the mechanical expansion valve 08 may throttle the refrigerant flowing therethrough to enable the air conditioner 06 to achieve different levels of refrigeration demand. The specific details of the vehicle control system to achieve the power battery and cabin refrigeration requirements are not described in the embodiments of the present application, and only a brief description is provided herein for the sake of fully explaining the functions of the vehicle control system.
The embodiment of the application also provides a vehicle-mounted device, fig. 3 is a schematic structural diagram of the vehicle-mounted device according to the embodiment of the application, and as shown in fig. 3, the vehicle-mounted device includes: a processor 31 and a memory 32 storing a computer program. Wherein the processor 31 and the memory 32 may be one or more.
The memory 32 is mainly used for storing computer programs, and the computer programs can be executed by the processor, so that the processor controls the vehicle-mounted device to realize corresponding functions and complete corresponding actions or tasks. In addition to storing computer programs, the memory may be configured to store various other data to support operation on the in-vehicle device, examples of which include instructions for any application or method operating on the in-vehicle device.
The memory 32 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
In the embodiment of the present application, the implementation form of the processor 31 is not limited, and may be, for example, but not limited to, a CPU, a GPU, an MCU, or the like. The processor 31 may be regarded as a control system of the in-vehicle device and may be used to execute a computer program stored in the memory 32 for controlling the in-vehicle device to perform the respective functions, to perform the respective actions or tasks. It should be noted that, according to the implementation form of the vehicle-mounted device and the different situations, the functions, actions or tasks to be implemented are different; accordingly, the computer programs stored in the memory 32 may also be different, and the execution of the different computer programs by the processor 31 may control the vehicle device to perform different functions, perform different actions or tasks.
In some alternative embodiments, as shown in fig. 3, the in-vehicle apparatus may further include: communication component 33, display 34, and power supply component 35. Only a part of the components are schematically shown in fig. 3, which does not mean that the vehicle-mounted device only comprises the components shown in fig. 3, and the vehicle-mounted device can also comprise other components according to different application requirements, in particular depending on the product form of the vehicle-mounted device.
In an embodiment of the present application, the processor 31, when executing the computer program in the memory 32, is adapted to: determining the current working condition of the vehicle according to the use state of the vehicle; determining the heating priority of a power battery and a cabin in the vehicle according to the current working condition; the power battery and the cabin are provided with the heat required for heating according to the heating priority.
In an alternative embodiment, the processor 31 is configured to, when determining the current operating condition of the vehicle according to the usage status of the vehicle: identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or acquiring the starting state of the vehicle from the driving system, and determining whether the current working condition of the vehicle is a driving working condition.
In an alternative embodiment, processor 31, when determining the heating priority of the power battery and cabin in the vehicle based on the current operating conditions, is configured to: acquiring a priority sequence of a predefined power battery and a predefined cockpit under each working condition; and determining the heating priority of the power battery and the cab of the vehicle under the current working condition.
In an alternative embodiment, the processor 31, when providing the power battery and the cockpit with the heat required for heating according to the heating priority, is configured to: determining a target opening of a three-way valve in a heating loop according to the heating priority; and controlling the three-way valve to adjust to the target opening degree, and providing heat required by heating for the power battery and the cockpit.
In an alternative embodiment, the processor 31 is configured to, when determining the target opening of the three-way valve in the heating circuit according to the heating priority,: collecting the temperature difference of a battery core of a power battery as a first temperature; collecting the temperature of a battery loop as a second temperature; if the heating priority of the power battery is the same as that of the cabin, determining the target opening of the three-way valve in the heating loop according to the first temperature and the second temperature; if the heating priorities of the power battery and the cockpit are different, collecting the temperature of the heating loop as a third temperature; and determining the target opening of the three-way valve in the heating loop according to the first temperature, the second temperature and the third temperature.
In an alternative embodiment, the processor 31 is configured to, when determining the target opening of the three-way valve in the heating circuit based on the first temperature and the second temperature: acquiring a first corresponding relation between a predefined battery cell temperature difference range and the opening of the three-way valve; determining a battery cell target temperature difference range corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the battery cell target temperature difference range as a first opening; a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve is predefined; determining a target temperature range corresponding to the second temperature from the second correspondence; taking the opening corresponding to the target temperature range as a second opening; and selecting the target opening of the three-way valve in the heating loop, which is the smallest opening value, from the first opening and the second opening.
In an alternative embodiment, the processor 31 is configured to, when determining the target opening of the three-way valve in the heating circuit based on the first temperature, the second temperature, and the third temperature: determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening of the three-way valve according to the heating priority; determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third corresponding relation; taking the opening corresponding to the target temperature range of the battery loop and the target temperature range of the heating loop as a third opening; and selecting the target opening of the three-way valve in the heating loop, wherein the target opening has the smallest opening value, from the first opening, the second opening and the third opening.
Accordingly, the embodiment of the present application also provides a computer readable storage medium storing a computer program, where the computer program when executed can implement each step of the above method embodiment that can be executed by the vehicle-mounted device.
The embodiment of the application also provides a vehicle heating control device. For example, the processing device may be implemented as a virtual device, such as an application, in a communications controller (Communication Control Unit, CCU). As shown in fig. 4, the vehicle heating control apparatus includes:
a first determining module 401, configured to determine a current working condition of the vehicle according to a use state of the vehicle;
a second determining module 402, configured to determine a heating priority of the power battery and the cabin in the vehicle according to the current working condition;
a heating module 403 for providing the power battery and the cabin with heat required for heating according to the heating priority.
In an alternative embodiment, the first determining module 401 is configured to, when determining the current operating condition of the vehicle according to the usage state of the vehicle: identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or acquiring the starting state of the vehicle from the driving system, and determining whether the current working condition of the vehicle is a driving working condition.
In an alternative embodiment, the second determination module 402 is configured to, when determining the heating priority of the power battery and the cockpit in the vehicle based on the current operating conditions: acquiring a priority sequence of a predefined power battery and a predefined cockpit under each working condition; and determining the heating priority of the power battery and the cab of the vehicle under the current working condition.
In an alternative embodiment, the heating module 403 is configured to, in providing the power cell and the cockpit with the heat required for heating according to the heating priority: determining a target opening of a three-way valve in a heating loop according to the heating priority; and controlling the three-way valve to adjust to the target opening degree, and providing heat required by heating for the power battery and the cockpit.
In an alternative embodiment, the heating module 403 is configured to, when determining the target opening of the three-way valve in the heating circuit according to the heating priority: collecting the temperature difference of a battery core of a power battery as a first temperature; collecting the temperature of a battery loop as a second temperature; if the heating priority of the power battery is the same as that of the cabin, determining the target opening of the three-way valve in the heating loop according to the first temperature and the second temperature; if the heating priorities of the power battery and the cockpit are different, collecting the temperature of the heating loop as a third temperature; and determining the target opening of the three-way valve in the heating loop according to the first temperature, the second temperature and the third temperature.
In an alternative embodiment, the heating module 403 is configured to, when determining the target opening of the three-way valve in the heating circuit according to the first temperature and the second temperature: acquiring a first corresponding relation between a predefined battery cell temperature difference range and the opening of the three-way valve; determining a battery cell target temperature difference range corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the battery cell target temperature difference range as a first opening; a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve is predefined; determining a target temperature range corresponding to the second temperature from the second correspondence; taking the opening corresponding to the target temperature range as a second opening; and selecting the target opening of the three-way valve in the heating loop, which is the smallest opening value, from the first opening and the second opening.
In an alternative embodiment, the heating module 403 is configured to, when determining the target opening of the three-way valve in the heating circuit according to the first temperature, the second temperature, and the third temperature: determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening of the three-way valve according to the heating priority; determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third corresponding relation; taking the opening corresponding to the target temperature range of the battery loop and the target temperature range of the heating loop as a third opening; and selecting the target opening of the three-way valve in the heating loop, wherein the target opening has the smallest opening value, from the first opening, the second opening and the third opening.
The communication assembly of the above embodiments is configured to facilitate wired or wireless communication between the device in which the communication assembly is located and other devices. The device where the communication component is located can access a wireless network based on a communication standard, such as a mobile communication network of WiFi,2G, 3G, 4G/LTE, 5G, etc., or a combination thereof. In one exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component further comprises a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
The display in the above-described embodiments includes a screen, which may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation.
The power supply assembly in the above embodiment provides power for various components of the device in which the power supply assembly is located. The power components may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the devices in which the power components are located.
The audio component of the above embodiments may be configured to output and/or input audio signals. For example, the audio component includes a Microphone (MIC) configured to receive external audio signals when the device in which the audio component is located is in an operational mode, such as a call mode, a recording mode, and a speech recognition mode. The received audio signal may be further stored in a memory or transmitted via a communication component. In some embodiments, the audio assembly further comprises a speaker for outputting audio signals.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (8)
1. A vehicle heating control method, characterized by comprising:
determining the current working condition of a vehicle according to the use state of the vehicle;
Determining the heating priority of a power battery and a cockpit in the vehicle according to the current working condition;
providing heat required by heating for the power battery and the cockpit according to the heating priority;
Determining a target opening of a three-way valve in a heating loop according to the heating priority;
controlling the three-way valve to adjust to the target opening degree, and providing heat required by heating for the power battery and the cockpit;
Collecting the temperature difference of the battery core of the power battery as a first temperature;
Collecting the temperature of a battery loop as a second temperature;
If the heating priority of the power battery is the same as that of the cockpit, determining the target opening of a three-way valve in a heating loop according to the first temperature and the second temperature;
Acquiring a first corresponding relation between a predefined battery cell temperature difference range and the opening of the three-way valve; determining a battery cell target temperature difference range corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the battery cell target temperature difference range as a first opening;
a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve is predefined; determining a target temperature range corresponding to the second temperature from the second correspondence; taking the opening corresponding to the target temperature range as a second opening;
Selecting the target opening of the three-way valve in the heating loop, which is the smallest opening value, from the first opening and the second opening;
If the heating priorities of the power battery and the cockpit are different, acquiring the temperature of the heating loop as a third temperature; determining a target opening of a three-way valve in a heating loop according to the first temperature, the second temperature and the third temperature;
determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening of the three-way valve according to the heating priority;
determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third correspondence;
Taking the opening corresponding to the target temperature range of the battery loop and the target temperature range of the heating loop as a third opening;
And selecting the target opening of the three-way valve in the heating circuit, wherein the target opening is the minimum opening value from the first opening, the second opening and the third opening.
2. The method of claim 1, wherein determining the current operating condition of the vehicle based on the state of use of the vehicle comprises:
identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or alternatively
And acquiring a vehicle starting state from a driving system, and determining whether the current working condition of the vehicle is a driving working condition.
3. The method of claim 1, wherein determining a heating priority for a power battery and a cockpit in the vehicle based on the current operating conditions comprises:
acquiring a priority sequence of a predefined power battery and a predefined cockpit under each working condition;
and determining the heating priority of the power battery and the cockpit of the vehicle under the current working condition according to the priority sequence.
4. A vehicle control system, characterized in that the vehicle control system comprises: the heating loop is used for providing heat required by heating for the power battery and the cockpit;
The vehicle control unit is configured to implement the steps in the method according to any one of claims 1 to 3, and control the heating circuit to provide heat required for heating the power battery and the cabin.
5. The system of claim 4, wherein the vehicle control system further comprises a refrigeration circuit for providing a refrigerant required for cooling the power cell and the cockpit.
6. A vehicle heating control apparatus for implementing the method as claimed in any one of claims 1 to 3;
the first determining module is used for determining the current working condition of the vehicle according to the using state of the vehicle;
the second determining module is used for determining the heating priority of the power battery and the cockpit in the vehicle according to the current working condition;
And the heating module is used for providing heat required by heating for the power battery and the cockpit according to the heating priority.
7. An in-vehicle apparatus, characterized by comprising: a memory and a processor;
the memory is used for storing one or more computer instructions;
the processor being configured to execute the one or more computer instructions to implement the steps in the method of any of claims 1-3.
8. A computer readable storage medium storing a computer program, characterized in that the steps of the method of any one of claims 1-3 are implemented when said computer program is executed.
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| CN115214312B (en) * | 2022-02-21 | 2024-02-02 | 广州汽车集团股份有限公司 | Control method and device for proportional three-way valve, vehicle and storage medium |
| CN116278588A (en) * | 2023-01-31 | 2023-06-23 | 重庆青山工业有限责任公司 | Heat balance distribution control method for vehicle heat management system |
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