Vehicle control method and related equipment

Abstract

The invention provides a vehicle control method and related equipment, which can be applied to the field of vehicle processing. The vehicle comprises the air conditioning system, the air conditioning system comprises a battery heating loop and a compartment heating loop which are arranged in parallel, the compartment heating loop is provided with a refrigerant adjusting component, and the method comprises the steps that the compartment temperature corresponding to a compartment in the vehicle, the battery temperature corresponding to a battery in the vehicle and the remaining electric quantity of the battery are obtained; according to the compartment temperature, the battery temperature and the remaining electric quantity, whether the battery and the compartment have the heating requirement or not is judged, and a judgment result is obtained; and under the condition that the judgment result indicates that the compartment and / or the battery have / has the heating requirement, the air conditioning system is controlled to operate, and the opening degree of the refrigerant adjusting component is adjusted according to the judgment result so that refrigerants entering the battery heating loop and the compartment heating loop can be shunted. According to the application, the larger heating requirement of the battery or the carriage is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle control method and related equipment. BACKGROUND

[0002] With the popularity of electric vehicles, more and more electric vehicles appear. Vehicles need to travel by the power output by the battery.

[0003] During driving, the vehicle needs to ensure the temperature of the battery, so as to ensure that the battery outputs enough power for the vehicle to travel. When the driver in the vehicle has a heating demand, the vehicle needs to heat the cabin, so the vehicle may have a heating demand for the battery and the cabin.

[0004] In the example technology, when the heating demand of the cabin and the battery in the vehicle is large, the waste heat of the motor and the electronic control is recovered to assist the air conditioning system to heat the cabin and the battery. However, the waste heat of the motor and the electronic control may be insufficient, which makes it difficult to meet the heating demand of the battery or the cabin in the vehicle. SUMMARY

[0005] The present application provides a vehicle control method and related equipment, which solves the problem of difficult to meet the heating demand of the battery or the cabin in the vehicle.

[0006] In a first aspect, the present application provides a vehicle control method applied to a vehicle, the vehicle comprising an air conditioning system, the air conditioning system comprising a battery heating circuit and a cabin heating circuit connected in parallel, the cabin heating circuit comprising a refrigerant adjusting component, the vehicle control method comprising: obtaining a cabin temperature corresponding to a cabin in the vehicle, a battery temperature corresponding to a battery in the vehicle, and a remaining power of the battery; determining whether the battery and the cabin have a heating demand according to the cabin temperature, the battery temperature, and the remaining power, to obtain a determination result; in a case where the determination result indicates that the cabin and / or the battery have a heating demand, controlling the air conditioning system to operate, and adjusting an opening degree of the refrigerant adjusting component according to the determination result, to shunt the refrigerant entering the battery heating circuit and the cabin heating circuit.

[0007] In some embodiments, the determination of whether the battery and the cabin have a heating demand according to the cabin temperature, the battery temperature, and the remaining power comprises: obtaining a reference temperature and a target output power, the reference temperature comprising a cabin set temperature or an ambient temperature, and the target output power being used to indicate the output power of the battery required for normal operation of the vehicle; The current theoretical output power of the battery is determined based on the remaining charge and the battery temperature. If the temperature inside the vehicle is lower than the reference temperature and the theoretical output power is lower than the target output power, it is determined that both the vehicle and the battery have a heating requirement.

[0008] In some embodiments, after determining the current theoretical output power of the battery based on the remaining charge and the battery temperature, the method further includes: If the temperature inside the vehicle is greater than or equal to the reference temperature, and the theoretical output power is less than the target output power, it is determined that the battery has a heating requirement. If the temperature inside the carriage is lower than the reference temperature and the theoretical output power is greater than or equal to the target output power, it is determined that the carriage has a heating requirement.

[0009] In some embodiments, adjusting the opening degree of the refrigerant regulating component based on the determination result includes: If the judgment result indicates that both the carriage and the battery have a heating requirement, the opening of the refrigerant regulating component is adjusted to be less than the preset opening, where the preset opening is greater than zero. If the judgment result indicates that the battery has a heating requirement, the valve of the refrigerant regulating component is closed to heat the battery. If the judgment result indicates that the carriage has a heating demand, the valve of the refrigerant regulating component is opened and the valve in the battery heating circuit is closed to heat the carriage.

[0010] In some embodiments, adjusting the opening degree of the refrigerant regulating component to be less than a preset opening degree includes: Obtain the first difference between the current value and the set value of the inlet water temperature of the battery heat exchanger in the battery heating circuit; The target opening degree of the refrigerant regulating component is determined based on the first difference, wherein the target opening degree is less than the preset opening degree and greater than zero. Adjust the opening degree of the refrigerant regulating component to the target opening degree.

[0011] In some embodiments, controlling the operation of the air conditioning system includes: Obtain the first difference between the current value and the set value of the inlet water temperature of the battery heat exchanger in the battery heating circuit, and obtain the second difference between the current value and the set value of the inlet water temperature of the compartment heat exchanger in the compartment heating circuit. The first speed of the compressor in the air conditioning system is determined based on the first difference, and the second speed of the compressor is determined based on the second difference; determining a target rotation speed according to the first rotation speed and the second rotation speed; controlling the compressor to operate at the target rotation speed.

[0012] In some embodiments, after the controlling the air conditioning system to operate, the method further comprises: obtaining an ambient temperature corresponding to an environment in which the vehicle is located; in a case where the ambient temperature is less than a temperature threshold, controlling a waste heat recovery component in the vehicle to operate, so as to deliver, by the waste heat recovery component, waste heat of a motor and an electronic control in the vehicle to an evaporator in the air conditioning system.

[0013] In some embodiments, after the controlling the waste heat recovery component in the vehicle to operate, the method comprises: determining a first energy value corresponding to a heat absorption demand of the evaporator in the air conditioning system, and obtaining a second energy value corresponding to waste heat recovered by the waste heat recovery component; in a case where, according to the first energy value and the second energy value, it is determined that the waste heat recovered by the waste heat recovery component does not meet the heat absorption demand of the evaporator, controlling a positive temperature coefficient heater in the vehicle to operate, so as to provide heat to the evaporator.

[0014] In a second aspect, the present application provides a vehicle, comprising: an obtaining module, configured to obtain a vehicle cabin temperature corresponding to a vehicle cabin in the vehicle, a battery temperature corresponding to a battery in the vehicle, and a remaining electric quantity of the battery; a judging module, configured to judge whether the battery and the vehicle cabin have a heating demand according to the vehicle cabin temperature, the battery temperature, and the remaining electric quantity, to obtain a judgment result; a control module, configured to, in a case where the judgment result indicates that the vehicle cabin and / or the battery have a heating demand, control the air conditioning system to operate, and adjust an opening degree of the refrigerant adjusting component according to the judgment result, so as to split the refrigerant entering the battery heating loop and the vehicle cabin heating loop.

[0015] In a third aspect, the present application provides a vehicle, comprising: the vehicle comprises an air conditioning system, a processor, and a memory and a communication interface connected in communication with the processor; the air conditioning system comprises a battery heating loop and a vehicle cabin heating loop arranged in parallel, and the vehicle cabin heating loop is provided with an electronic expansion valve; the communication interface is configured to communicate with other communication devices; the memory is configured to store computer execution instructions; the processor is configured to execute the computer execution instructions stored in the memory, so as to implement the vehicle control method as described above.

[0016] In a fourth aspect, the present application provides a computer readable storage medium, which stores computer execution instructions. When the computer execution instructions are executed by a processor, the vehicle control method according to the first aspect is implemented.

[0017] In a fifth aspect, the present application provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the vehicle control method according to the first aspect is implemented.

[0018] The vehicle control method and related device provided by the present application, the air conditioning system in the vehicle includes a battery heating circuit and a cabin heating circuit arranged in parallel, the cabin temperature of the cabin, the battery temperature corresponding to the battery and the remaining power of the battery are used to determine whether the cabin and the battery have heating demand to obtain a determination result, if the determination result indicates that the cabin and / or the battery has heating demand, the air conditioning system is controlled to run, and the opening degree of the refrigerant adjusting component in the cabin heating circuit is adjusted based on the determination structure to split the refrigerant entering the battery heating circuit and the cabin heating circuit. Even if the waste heat of the motor and the electronic control is insufficient, the refrigerant entering the battery and the cabin can be split by adjusting the opening degree of the refrigerant adjusting component to meet the heating demand of the battery or the cabin. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0020] Figure 1 FIG. 1 is a structural schematic diagram of the air conditioning system of the vehicle of the present application; Figure 2 FIG. 2 is a step flowchart of the vehicle control method provided in an embodiment of the present application; Figure 1 ; Figure 3 FIG. 3 is a step flowchart of the vehicle control method provided in an embodiment of the present application; Figure 2 ; Figure 4 FIG. 4 is a step flowchart of the vehicle control method provided in an embodiment of the present application; Figure 3 ; Figure 4 FIG. 5 is a step flowchart of the vehicle control method provided in an embodiment of the present application; Figure 6 ; Figure 7 FIG. 6 is a program module schematic diagram of a vehicle provided in an embodiment of the present application; Figure 1 FIG. 7 is a hardware structure schematic diagram of an electronic device provided in an embodiment of the present application.

[0021] The specific embodiments of the application have been shown by the above drawings, and will be described in more detail hereinafter. These drawings and detailed description are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application for a person skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application. In addition, although the disclosure in the application is introduced according to one or more examples, it should be understood that each aspect of these disclosures can also constitute a complete embodiment independently.

[0023] It should be noted that the brief description of the terms in the application is only for the convenience of understanding the subsequently described embodiments, and is not intended to limit the embodiments of the application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0024] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or device including a series of components does not have to be limited to the clearly listed components, but can include other components that are not clearly listed or inherent to these products or devices.

[0025] The term "module" used in the embodiments of the application refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic or a combination of hardware or / and software code capable of performing functions related to the element.

[0026] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards, and provide corresponding operation portal for user to choose authorization or refusal.

[0027] The following refers to Figure 1 The air conditioning system in the vehicle of the application will be described in detail. As shown in FIG. 1, the air conditioning system of the vehicle of the application includes an air conditioning system 1, a vehicle 2, a user terminal 3, a server 4, a cloud platform 5 and a data center 6. Figure 1As shown, the air conditioning system includes a compressor 1, a solenoid valve 2, an external heat exchanger 3, an electronic expansion valve 4, an electronic expansion valve 5, a liquid receiver 6, an air conditioning unit heat exchanger (passenger compartment heat exchanger) 7, a refrigerant regulating component 8, a water pump 9, a four-way reversing valve 10, a battery pack and its heat exchanger 11, a water pump 12, a positive temperature coefficient thermistor (PTC) 13, a heater core 14, an electronic expansion valve 15, an electronic expansion valve 16, a battery heat exchanger (battery heat exchanger) 17, a solenoid valve 18, an electronic expansion valve 19, an air conditioning unit evaporator 20, a gas-liquid separator 21, a motor and electronic control radiator 22, a three-way valve 23, a motor cooling module 24, an electronic control cooling module 25, a water pump 26, a solenoid valve 27, an electronic expansion valve 28, and a waste heat recovery heat exchanger 29. The carriage heat exchanger 7 is used for heat exchange within the carriage, meaning it can both cool and heat the carriage. The refrigerant circuit containing the carriage heat exchanger 7 forms the carriage heating circuit. This heating circuit also includes a refrigerant regulating component 8, which can be a valve with opening adjustment function, such as an electronic expansion valve. The battery heat exchanger 17 is used for heat exchange within the battery, meaning it can both heat and cool the battery. The refrigerant circuit containing the battery heat exchanger 17 forms the battery heating circuit, and this circuit includes electronic expansion valves 15 and 16. Figure 1 It can be seen that the battery heating circuit and the passenger compartment heating circuit are set in parallel. When the opening of the refrigerant regulating component 8 decreases, less refrigerant flows to the passenger compartment heat exchanger and more refrigerant flows to the battery heat exchanger; when the opening of the refrigerant regulating component 8 increases, more refrigerant flows to the passenger compartment heat exchanger and less refrigerant flows to the battery heat exchanger. Therefore, the heat distribution of the battery and the passenger compartment can be achieved by adjusting the opening of the refrigerant regulating component 8.

[0028] The air conditioning system can manage the vehicle's thermal performance, as follows: Battery thermal management: The air conditioning system can precisely control the battery's temperature (heating and cooling) based on its operating status. In summer, it uses air conditioning + liquid cooling to cool the battery, and in winter, it uses a heat pump + liquid heating to heat the battery. When the ambient temperature is low, the waste heat from the motor and electronic control unit can be recovered as a supplementary heat source for the evaporator. If the waste heat from the motor and electronic control unit is insufficient to meet the heat absorption requirements of the heat pump system's evaporator, a PTC (Power Transmission Control Unit) can be activated as a supplementary heat source.

[0029] Vehicle cabin thermal management: the refrigeration in the vehicle cabin is realized by evaporation in the vehicle cabin. The vehicle cabin is provided with a warm air core. When the vehicle cabin needs to be heated, the air conditioning system is switched to a heat pump heating mode, and the air conditioning box plate is replaced as a condenser to prepare high-temperature liquid to exchange heat with the warm air core to heat the vehicle cabin. When the ambient temperature is low, the waste heat of the motor and the electric control can be recycled as a supplementary heat source for the evaporator, and the waste heat of the motor and the electric control is recycled to improve the energy efficiency of the system. When the ambient temperature is low and the waste heat of the motor and the electric control is not enough to maintain the heat pump system evaporator heat absorption demand, the PTC is started as a supplementary heat source.

[0030] Motor and controller thermal management: the motor and the controller are both in liquid cooling mode. In winter, the heat of the motor and the controller can be used as a heat source for heating the battery and the vehicle cabin in the heat pump system, further improving the operating efficiency of the heat pump system in winter.

[0031] The following Figure 2 The technical solutions shown in the present application will be described in detail in conjunction with specific embodiments. It should be noted that the following embodiments can exist independently, or can be combined with each other. For the same or similar content, it will not be repeated in different embodiments.

[0032] Referring to Figure 2 , Figure 1 The flowchart of the vehicle control method provided in the embodiments of the present application is shown in Figure 1 The vehicle control method comprises the following steps: Step S201, obtaining the vehicle cabin temperature corresponding to the vehicle cabin, the battery temperature corresponding to the battery in the vehicle, and the remaining capacity of the battery.

[0033] In the present embodiment, the execution subject is a vehicle, which can be a car provided with a battery, such as a heavy truck, a car, a passenger car, etc. The vehicle is provided with an air conditioning system, which comprises a battery heating circuit and a vehicle cabin heating circuit arranged in parallel. The vehicle cabin heating circuit is provided with a refrigerant adjusting component, which can be a valve with opening degree adjusting function, such as an electronic expansion valve. The structure of the air conditioning system is specifically described in Figure 1 .

[0034] The vehicle obtains the vehicle cabin temperature corresponding to the vehicle cabin, the battery temperature corresponding to the battery, and the remaining capacity SOC of the battery, so as to determine whether the vehicle cabin and the battery have heating demand based on the battery temperature, the remaining capacity and the vehicle cabin temperature.

[0035] The vehicle is provided with a motor waste heat recovery function. The vehicle can heat the vehicle cabin or the battery through the motor waste heat recovery function when the ambient temperature is low, for example, as described in Figure 1, by opening the waste heat recovery panel 29 to open the motor waste heat recovery function to heat the vehicle cabin or the battery. But the vehicle in the starting stage, there is no motor electric control of waste heat recovery, or in the case of low ambient temperature, the waste heat that cannot be recovered is insufficient for the heating of the battery or the vehicle cabin, if the vehicle cabin and the battery have heating requirements, the heat of the vehicle cabin and the battery needs to be distributed, that is, in the case that the vehicle is in the starting stage and / or the ambient temperature is lower than the preset ambient temperature, the vehicle obtains the vehicle cabin temperature, the battery temperature and the remaining temperature to determine whether the vehicle cabin and the battery have heating requirements.

[0036] Step S202, according to the vehicle cabin temperature, the battery temperature and the remaining temperature, it is judged whether the battery and the vehicle cabin have heating requirements, and the judgment result is obtained.

[0037] After the vehicle obtains the vehicle cabin temperature, the battery temperature and the remaining temperature, it can determine whether the vehicle cabin and the battery have heating requirements based on the three.

[0038] For example, the vehicle obtains the current weather information through networking, and obtains the outside temperature from the weather information. If the outside temperature is lower than the set temperature, it can be determined that the outside temperature is low, and the vehicle determines the difference between the vehicle cabin temperature and the outside temperature. If the difference is less than the preset difference, the vehicle cabin temperature is also low, and the vehicle cabin has heating requirements. The vehicle determines whether the battery has heating requirements based on the battery temperature and the remaining temperature. For example, the vehicle can calculate the power that the battery can output at present based on the battery temperature and the remaining temperature. If the power is less than the preset power, it can be determined that the power output by the battery is insufficient, and the vehicle needs to increase the temperature of the battery, that is, it is determined that the battery has heating requirements. The vehicle determines whether the vehicle cabin and the battery have heating requirements by the above method, and obtains the judgment result.

[0039] Step S203, in the case that the judgment result indicates that the vehicle cabin and / or the battery has heating requirements, the air conditioning system is controlled to run, and the opening degree of the refrigerant adjusting component is adjusted according to the judgment result to shunt the refrigerant entering the battery heating circuit and the vehicle cabin heating circuit.

[0040] After the vehicle obtains the judgment result, if the judgment result indicates that the vehicle cabin and / or the battery has heating requirements, the air conditioning system needs to be controlled to run, and the opening degree of the refrigerant adjusting component is adjusted based on the judgment result.

[0041] For example, if the judgment result indicates that both the passenger compartment and the battery have heating needs, the battery's availability affects the vehicle's safe operation. Heating the passenger compartment increases driver comfort, and the vehicle prioritizes safe operation, so it will prioritize heating the battery. That is, when both the passenger compartment and the battery have heating needs, more heat will be allocated to the battery. To address this, the vehicle adjusts the opening of the refrigerant regulating component in the passenger compartment heating circuit to be less than a preset opening, while ensuring the opening is greater than zero. When the refrigerant regulating component's opening is less than the preset opening, less refrigerant flows into the passenger compartment heat exchanger, and more refrigerant flows into the battery heat exchanger. In other words, the refrigerant regulating component diverts the refrigerant into the battery heating circuit and the passenger compartment heating circuit. When the outside temperature is high, the vehicle can cool the cabin through the air conditioning system. When the battery temperature is too high, if the battery has enough charge, it can output enough power to power the vehicle. However, if the battery temperature is too high, there will be safety hazards. Therefore, the battery can also be cooled. Thus, there are situations where both the cabin and the battery have cooling needs, meaning that the vehicle can cool both the battery and the cabin at the same time.

[0042] Furthermore, when the judgment indicates that the passenger compartment requires heating but the battery does not, the vehicle operates in passenger compartment heating mode, meaning it only heats the passenger compartment. The vehicle controls the air conditioning system to operate, opens the refrigerant regulating component in the passenger compartment heating circuit, and closes the valve in the battery heating circuit to heat the passenger compartment. The valve in the battery heating circuit is, for example,... Figure 3 The electronic expansion valves 15 and 16 are included. It is understood that when the vehicle compartment requires heating but the battery does not, heating is applied only to the compartment to improve user comfort.

[0043] Additionally, if the assessment indicates that the battery requires heating but the passenger compartment does not, the vehicle switches to battery heating mode, meaning it only heats the battery. In this mode, the vehicle controls the air conditioning system and shuts down the refrigerant regulating component in the passenger compartment heating circuit to heat the battery. It can be understood that if the passenger compartment temperature is greater than or equal to the reference temperature and the theoretical output power is less than the target output power, indicating that the passenger compartment does not require heating but the battery does, then the vehicle controls the air conditioning system and shuts down the electronic expansion valve to heat the battery.

[0044] In the embodiment, the air conditioning system in the vehicle includes a battery heating circuit and a cabin heating circuit arranged in parallel, a cabin temperature of the cabin, a battery temperature corresponding to the battery, and a remaining power of the battery are determined to determine whether the cabin and the battery have a heating demand, and the air conditioning system is controlled to operate when the determination result indicates that the cabin and / or the battery has a heating demand, and the opening degree of the refrigerant adjusting component in the cabin heating circuit is adjusted based on the determination structure to split the refrigerant entering the battery heating circuit and the cabin heating circuit. Even if the waste heat of the motor and the electric control is insufficient, the refrigerant entering the battery and the cabin can be split by adjusting the opening degree of the refrigerant adjusting component to meet the heating demand of the battery or the cabin.

[0045] Reference Figure 3 , Figure 2 Flowchart of the vehicle control method Figure 2 , based on Figure 4 The embodiment shown in FIG. 2 includes the following steps: Step S301, obtaining a reference temperature and a target output power, the reference temperature including a cabin set temperature or an ambient temperature, and the target output power indicating an output power of the battery required for normal operation of the vehicle.

[0046] In the embodiment, the vehicle obtains a reference temperature, which can be a cabin set temperature, and the cabin set temperature can be a temperature required to be reached in the cabin set by the driver. The reference temperature can also be an ambient temperature, which refers to the temperature outside the vehicle and can be detected by a temperature sensor of the vehicle. The vehicle further obtains a target output power, which refers to an output power of the battery required for normal operation of the vehicle. The target output power can also be a power required for normal operation and thermal management of the vehicle. The target output power can be a calibrated parameter obtained by previously testing the power of the vehicle.

[0047] Step S302, determining the current theoretical output power of the battery according to the remaining power and the battery temperature.

[0048] The vehicle obtains the remaining power and the battery temperature, and calculates the current output power of the battery according to the remaining power and the battery temperature. The output power is the theoretical output power. For example, the remaining power has a mapping relationship with the output power of the battery. The device calculates the output power based on the remaining power and the mapping relationship. The battery temperature affects the output power, so the output power is corrected by the battery temperature to obtain the theoretical output power. When the battery temperature is less than a set battery temperature, the output power calculated by the mapping relationship needs to be reduced. When the battery temperature is greater than or equal to the set temperature, the output power calculated by the mapping relationship is taken as the theoretical output power.

[0049] Step S303, in the case that the temperature of the vehicle cabin is less than the reference temperature and the theoretical output power is less than the target output power, it is determined that both the vehicle cabin and the battery have heating demand.

[0050] The vehicle determines whether the temperature of the vehicle cabin is less than the reference temperature, and if the temperature of the vehicle cabin is less than the reference temperature, the vehicle cabin has heating demand. The vehicle further determines whether the theoretical output power is less than the target output power, and if the theoretical output power is less than the target output power, it is determined that the battery also has heating demand, i.e. the determination result indicates that both the vehicle cabin and the battery have heating demand.

[0051] If the temperature of the vehicle cabin is less than the reference temperature and the theoretical output power is greater than or equal to the target output power, it is determined that the vehicle cabin has heating demand and the battery has no heating demand, i.e. the determination result indicates that the vehicle cabin has heating demand.

[0052] If the temperature of the vehicle cabin is greater than or equal to the reference temperature, it is determined that the vehicle cabin has no heating demand, and if the theoretical output power is less than the target output power, it is determined that the battery has heating demand, i.e. in the case that the temperature of the vehicle cabin is greater than or equal to the reference temperature and the theoretical output power is less than the target output power, it is determined that the battery has heating demand, and the determination result indicates that the battery has heating demand.

[0053] In the embodiment, the temperature of the vehicle cabin, the temperature of the battery and the remaining power of the battery are used to accurately determine whether the vehicle cabin and the battery have heating demand.

[0054] In an embodiment, when the determination result indicates that both the vehicle cabin and the battery have heating demand, the opening degree of the refrigerant adjusting component is adjusted to be less than the preset opening degree, which includes S1, S2, S3 and S4, which are described as follows: S1, a first difference between the current value and the set value of the inlet water temperature of the battery heat exchanger in the battery heating circuit is obtained, and a second difference between the current value and the set value of the inlet water temperature of the vehicle cabin heat exchanger in the vehicle cabin heating circuit is obtained.

[0055] In the embodiment, the vehicle controls the compressor in the air conditioning system to operate, so that the air conditioning system operates. The rotation speed of the compressor needs to meet the heating demand of the vehicle cabin and the battery, and thus the rotation speed of the compressor can be determined according to the heating demand of the vehicle cabin and the battery.

[0056] For example, the vehicle can control the rotation speed of the compressor through a controller. The vehicle inputs parameters into the controller, and the controller can determine the rotation speed of the compressor, so that the compressor operates at the determined rotation speed.

[0057] The vehicle calculates a difference between a current value of an inlet water temperature of a battery heat exchanger in a battery heating circuit and a set value, and the difference is defined as a first difference. The vehicle further calculates a difference between a current value of an inlet water temperature of a cabin heat exchanger in a cabin heating circuit and a set value, and the difference is defined as a second difference.

[0058] S2, determining a first rotating speed of the compressor in the air conditioning system according to the first difference, and determining a second rotating speed of the compressor according to the second difference.

[0059] After determining the first difference and the second difference, the vehicle determines the first rotating speed of the compressor based on the first difference, and determines the second rotating speed of the compressor according to the second difference.

[0060] For example, the second rotating speed is: wherein, the second difference, respectively, are a proportional coefficient, an integral coefficient and a differential coefficient of the controller; the second rotating speed is: wherein, the first difference, respectively, are a proportional coefficient, an integral coefficient and a differential coefficient of the controller, and t represents a current time S3, determining a target rotating speed according to the first rotating speed and the second rotating speed.

[0061] After determining the first rotating speed and the second rotating speed, the vehicle determines the target rotating speed based on the first rotating speed and the second rotating speed. For example, the target rotating speed is: .

[0062] S4, controlling the compressor to operate at the target rotating speed.

[0063] After determining the target rotating speed, the vehicle controls the compressor to operate at the target rotating speed. It should be noted that when only the cabin has a heating demand, the compressor operates at the first rotating speed, and when only the battery has a heating demand, the compressor operates at the second rotating speed.

[0064] In the embodiment, the vehicle accurately determines the target rotating speed of the compressor based on the inlet water temperature of the battery heat exchanger and the inlet water temperature of the cabin heat exchanger, so that the compressor can meet the heating demands of the battery and the cabin.

[0065] Referring to Figure 4 , Figure 3 a flowchart of a vehicle control method of the present application Figure 2 , based on Figure 3 or Figure 5 the embodiment shown in FIG. 2, step S203 comprises: Step S401: Obtain the first difference between the current value and the set value of the inlet water temperature of the battery heat exchanger in the battery heating circuit.

[0066] Step S402: Determine the target opening degree of the refrigerant regulating component based on the first difference. The target opening degree is less than the preset opening degree and greater than zero.

[0067] Step S403: Adjust the opening degree of the refrigerant regulating component to the target opening degree.

[0068] In this embodiment, the opening degree of the refrigerant regulating component in the vehicle compartment heating circuit is controlled by a controller. The vehicle determines the difference between the current value and the set value of the inlet water temperature of the battery heat exchanger in the battery heating circuit, which is defined as the first difference.

[0069] The vehicle uses the first difference as the input to the controller, which then outputs the target opening degree of the refrigerant regulating component. The target opening degree is less than the preset opening degree and greater than zero.

[0070] For example, the target opening is: in, It is the first difference. These are the proportional gain, integral gain, and derivative gain of the controller, respectively. After determining the target opening degree, the vehicle then adjusts the opening degree of the refrigerant regulating component to match the target opening degree.

[0071] It should be noted that when only the passenger compartment has a heating requirement, the vehicle uses the outlet water temperature of the passenger compartment heat exchanger, the temperature of the heat exchanger itself, and the air outlet temperature of the passenger compartment heat exchanger to fit the compressor speed, thereby controlling the compressor to run at the fitted speed to achieve heating of the passenger compartment.

[0072] In this embodiment, the vehicle accurately controls the opening of the electronic expansion valve based on the inlet water temperature of the battery heat exchanger to ensure that more heat can be distributed to heat the battery.

[0073] In one embodiment, once it is determined that both the passenger compartment and the battery require heating, a target temperature for the battery is set. This target temperature is calculated based on the driver's required output power and the battery's current remaining charge; the driver's output power is the target output power. After the air conditioning system is activated and the electronic expansion valve is adjusted to a value less than a preset value, the vehicle heats both the passenger compartment and the battery. The vehicle also monitors the battery's real-time temperature. If the real-time temperature reaches the target temperature, heating the battery can be stopped, i.e., the battery heating priority mode is stopped. The vehicle can then activate the preheating recovery function to maintain the battery's temperature, and heating is only applied to the passenger compartment, saving vehicle energy consumption.

[0074] ReferenceFigure 5 , Figure 3 Flowchart of the vehicle control method of the present application Figure 2 to Figure 4 , based on Figure 6 Any of the embodiments shown in S203, further comprising: Step S501, obtaining the ambient temperature corresponding to the environment where the vehicle is located.

[0075] In this embodiment, when the air conditioning system is running, the motor and the electric control in the vehicle have started to run, and the running of the motor and the electric control will produce heat. The vehicle can recycle this part of the heat. The heat generated by the motor and the electric control is the waste heat. The vehicle can be provided with a waste heat recovery component to recover the waste heat. The waste heat recovery component can be arranged at the motor and the electric control, and used for heat exchange with the motor and the electric control to realize the recovery of the waste heat. The waste heat recovery component can be a heat exchanger.

[0076] The vehicle obtains the ambient temperature of the environment where it is located, and determines whether the ambient temperature is less than the temperature threshold.

[0077] Step S502, in the case where the ambient temperature is less than the temperature threshold, controlling the waste heat recovery component in the vehicle to run, so as to transport the waste heat of the motor and the electric control in the vehicle to the evaporator in the air conditioning system through the waste heat recovery component.

[0078] When the ambient temperature is less than the temperature threshold, it can be determined that the external temperature is low, and the heat obtained from the outside by the operation of the air conditioning system is insufficient. At this time, the vehicle controls the waste heat recovery component to run, so as to transport the waste heat of the motor and the electric control in the vehicle to the evaporator in the air conditioning system through the waste heat recovery component, so as to serve as a supplemental heat source for the evaporator.

[0079] Furthermore, after the waste heat recovery component operates, a first energy value corresponding to the heat absorption demand of the evaporator in the air conditioning system is determined. Specifically, the air conditioning system has a target temperature, which can be set by the user, for example, if the user sets the air conditioning system temperature to 32°C, then the target temperature is 32°C; or the target temperature is set by the air conditioning system based on the heating demand of the passenger compartment or battery. The vehicle stores a mapping relationship between the target temperature and the energy value of the evaporator's heat absorption demand. Through this mapping relationship and the target temperature, the first energy value can be obtained, and the unit of the first energy value is joules. The vehicle then obtains a second energy value corresponding to the waste heat recovered by the waste heat recovery component. For example, the waste heat recovery component can be a heat exchanger. The second energy value can be calculated by the temperature rise of the heat exchanger during waste heat recovery, and by using the temperature rise and the specific heat capacity of the heat exchanger. In addition, the vehicle can also calculate a third energy value corresponding to the heat absorbed by the evaporator from the outside environment based on the outside temperature. The lower the outside temperature, the lower the third energy value. The vehicle determines whether the waste heat from the waste heat recovery component meets the heat absorption demand of the evaporator based on the first and second energy values. Specifically, if the sum of the second and third energy values ​​is greater than or equal to the first energy value, the waste heat recovered by the waste heat recovery component meets the heat absorption requirements of the evaporator. If the sum of the second and third energy values ​​is less than the first energy value, the waste heat recovered by the waste heat recovery component does not meet the heat absorption requirements of the evaporator. If the sum of the second and third energy values ​​is less than the first energy value, and it is determined that the waste heat recovered by the waste heat recovery component does not meet the heat absorption requirements of the evaporator, the positive temperature coefficient heater in the vehicle is controlled to operate to provide heat to the evaporator, ensuring that the air conditioning system can meet the heating requirements of the passenger compartment and the battery.

[0080] In this embodiment, when the ambient temperature is low, the waste heat from the motor and electronic control is recovered as a supplementary heat source for the evaporator, ensuring that the air conditioning system has enough heat to meet the heating needs of the vehicle's battery and passenger compartment.

[0081] Based on the content described in the above embodiments, this application also provides a vehicle, with reference to... Figure 6 , Figure 7 This is a schematic diagram of a vehicle program module provided in an embodiment of this application. In some embodiments, the vehicle 600 includes: The acquisition module 610 is used to acquire the temperature of the vehicle compartment, the temperature of the battery, and the remaining charge of the battery. The judgment module 620 is used to determine whether the battery and the vehicle compartment have a heating requirement based on the compartment temperature, battery temperature and remaining power, and obtain the judgment result. The control module 630 is configured to, in a case where the determination result indicates that the vehicle cabin and / or the battery has a heating demand, control the air conditioning system to operate, and adjust an opening degree of the refrigerant adjusting component according to the determination result, so as to split the refrigerant entering the battery heating circuit and the vehicle cabin heating circuit.

[0082] In some embodiments, the vehicle 600 is specifically configured to: obtain a reference temperature and a target output power, the reference temperature comprising a vehicle cabin setting temperature or an ambient temperature, and the target output power being used to indicate an output power required by the battery for normal operation of the vehicle; determine a theoretical output power of the battery according to the remaining power and the battery temperature; in a case where the vehicle cabin temperature is less than the reference temperature and the theoretical output power is less than the target output power, determine that both the vehicle cabin and the battery have a heating demand.

[0083] In some embodiments, the vehicle 600 is specifically configured to: in a case where the vehicle cabin temperature is greater than or equal to the reference temperature and the theoretical output power is less than the target output power, determine that the battery has a heating demand; in a case where the vehicle cabin temperature is less than the reference temperature and the theoretical output power is greater than or equal to the target output power, determine that the vehicle cabin has a heating demand.

[0084] In some embodiments, the vehicle 600 is specifically configured to: in a case where the determination result indicates that both the vehicle cabin and the battery have a heating demand, adjust the opening degree of the refrigerant adjusting component to be less than a preset opening degree, the preset opening degree being greater than zero; in a case where the determination result indicates that the battery has a heating demand, control a valve of the refrigerant adjusting component to be closed, so as to heat the battery; in a case where the determination result indicates that the vehicle cabin has a heating demand, control the valve of the refrigerant adjusting component to be opened, and control a valve in the battery heating circuit to be closed, so as to heat the vehicle cabin.

[0085] In some embodiments, the vehicle 600 is specifically configured to: obtain a first difference value between a current value and a set value of an inlet water temperature of the battery heat exchanger in the battery heating circuit; determine a target opening degree of the refrigerant adjusting component according to the first difference value, the target opening degree being less than a preset opening degree and greater than zero; adjust the opening degree of the refrigerant adjusting component to the target opening degree.

[0086] In some embodiments, the vehicle 600 is specifically configured to: obtain a first difference value between a current value and a set value of an inlet water temperature of a battery heat exchanger in a battery heating circuit, and obtain a second difference value between a current value and a set value of an inlet water temperature of a cabin heat exchanger in a cabin heating circuit; determine a first rotating speed of a compressor in the air conditioning system according to the first difference value, and determine a second rotating speed of the compressor according to the second difference value; determine a target rotating speed according to the first rotating speed and the second rotating speed; control the compressor to operate at the target rotating speed.

[0087] In some embodiments, the vehicle 600 is specifically configured to: obtain an ambient temperature corresponding to an environment in which the vehicle is located; in a case where the ambient temperature is less than a temperature threshold, control a waste heat recovery component in the vehicle to operate to deliver, by the waste heat recovery component, waste heat of a motor and an electronic control in the vehicle to an evaporator in the air conditioning system.

[0088] In some embodiments, the vehicle 600 is specifically configured to: determine a first energy value corresponding to a heat absorption demand of the evaporator in the air conditioning system, and obtain a second energy value corresponding to waste heat recovered by the waste heat recovery component; in a case where it is determined, according to the first energy value and the second energy value, that the waste heat recovered by the waste heat recovery component does not meet the heat absorption demand of the evaporator, control a positive temperature coefficient heater in the vehicle to operate to provide heat to the evaporator.

[0089] It should be noted that each step in the vehicle control method performed by the vehicle is specifically referred to the above embodiments, which will not be repeated here.

[0090] Further, based on the content described in the above embodiments, the present embodiment further provides an electronic device, which includes at least one processor, and a communication interface and a memory in communication connection with the processor; wherein the communication interface is configured to communicate with other communication devices, and the memory stores computer execution instructions; the at least one processor executes the computer execution instructions stored in the memory to realize each step in the vehicle control method as described in the above embodiments.

[0091] In order to better understand the embodiments of the present application, refer to Figure 7 , Figure 7 a hardware structure schematic diagram of an electronic device provided by the embodiments of the present application.

[0092] As ​ shown, the electronic device 700 of the present embodiment includes a processor 701 and a memory 702, a communication interface 704; wherein: the memory 702 is configured to store computer execution instructions; The communication interface 704 is configured to communicate with other communication devices. The processor 701 is configured to execute the computer-executable instructions stored in the memory to implement each step in the query optimization method described in the above embodiments.

[0093] Optionally, the memory 702 can be independent or integrated with the processor 701.

[0094] When the memory 702 is independent, the device further includes a bus 703 configured to connect the memory 702, the communication interface 704 and the processor 701.

[0095] The embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores computer-executable instructions. When the processor executes the computer-executable instructions, each step in the vehicle control method described in the above embodiments is implemented.

[0096] The embodiment of the present application provides a computer program product, and the computer program product includes a computer program. When the computer program is executed by the processor, each step in the vehicle control method described in the above embodiments is implemented.

[0097] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. For example, the above-described device embodiments are merely illustrative, and the division of modules can be different, for example, a plurality of modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the modules shown or discussed can be indirect coupling or communication connection through some interfaces, devices or modules, and can be electrical, mechanical or other forms.

[0098] The modules illustrated as separate components can or can not be physically separate, and the components illustrated as modules can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment.

[0099] In addition, each functional module in each embodiment of the present application can be integrated in one processing unit, or each module can be physically present alone, or two or more modules can be integrated in one unit. The unit formed by the above modules can be realized in the form of hardware or in the form of hardware plus software functional units.

[0100] The integrated modules realized in the form of software function modules can be stored in a computer readable storage medium. The software function modules are stored in a storage medium and include a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute part of the steps of the methods of various embodiments of the present application.

[0101] It should be understood that the processor described above can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor and the like. The steps of the methods disclosed in the application can be directly embodied in the form of hardware processor execution, or a combination of hardware and software modules in the processor.

[0102] The memory can include a high-speed memory, and can also include a non-volatile storage, for example, at least one disk memory, and can also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk or an optical disk, etc.

[0103] The bus can be an industry standard architecture (ISA) bus, a peripheral component (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of the present application does not limit to only one bus or one type of bus.

[0104] The storage medium described above can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory, electrically erasable programmable read-only memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic storage, flash memory, magnetic disk or optical disk. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0105] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle control method characterized by, The application is applied to a vehicle, the vehicle comprising an air conditioning system, the air conditioning system comprising a battery heating circuit and a cabin heating circuit arranged in parallel, the cabin heating circuit being provided with a refrigerant adjusting component, and the vehicle control method comprising: obtaining a cabin temperature corresponding to a cabin in the vehicle, a battery temperature corresponding to a battery in the vehicle, and a remaining power of the battery; determining whether the battery and the cabin have a heating demand according to the cabin temperature, the battery temperature, and the remaining power, to obtain a determination result; in a case where the determination result indicates that the cabin and / or the battery has a heating demand, controlling the air conditioning system to operate, and adjusting an opening degree of the refrigerant adjusting component according to the determination result, to shunt refrigerant entering the battery heating circuit and the cabin heating circuit.

2. The method of claim 1, wherein, The determination of whether the battery and the cabin have a heating demand according to the cabin temperature, the battery temperature, and the remaining power comprises: obtaining a reference temperature and a target output power, the reference temperature comprising a cabin setting temperature or an ambient temperature, and the target output power being used to indicate an output power of the battery required for normal operation of the vehicle; determining a current theoretical output power of the battery according to the remaining power and the battery temperature; in a case where the cabin temperature is less than the reference temperature, and the theoretical output power is less than the target output power, determining that the cabin and the battery both have a heating demand.

3. The method of claim 2, wherein, After the determination of the current theoretical output power of the battery according to the remaining power and the battery temperature, the method further comprises: in a case where the cabin temperature is greater than or equal to the reference temperature, and the theoretical output power is less than the target output power, determining that the battery has a heating demand; in a case where the cabin temperature is less than the reference temperature, and the theoretical output power is greater than or equal to the target output power, determining that the cabin has a heating demand.

4. The method of claim 1, wherein, The adjustment of the opening degree of the refrigerant adjusting component according to the determination result comprises: in a case where the determination result indicates that the cabin and the battery both have a heating demand, adjusting the opening degree of the refrigerant adjusting component to be less than a preset opening degree, the preset opening degree being greater than zero; in a case where the determination result indicates that the battery has a heating demand, controlling a valve of the refrigerant adjusting component to be closed, to heat the battery; in a case where the determination result indicates that the cabin has a heating demand, controlling a valve of the refrigerant adjusting component to be opened, and controlling a valve in the battery heating circuit to be closed, to heat the cabin.

5. The method of claim 4, wherein, The adjustment of the opening degree of the refrigerant adjusting component to be less than the preset opening degree comprises: obtaining a first difference between a current value and a set value of an inlet water temperature of a battery heat exchanger in the battery heating circuit; determining a target opening degree of the refrigerant adjusting component according to the first difference, the target opening degree being less than the preset opening degree and greater than zero; adjusting the opening degree of the refrigerant adjusting component to the target opening degree.

6. The method of claim 1, wherein, The control of the air conditioning system to operate comprises: obtain a first difference between a current value and a set value of an inlet water temperature of a battery heat exchanger in the battery heating circuit, and obtain a second difference between a current value and a set value of an inlet water temperature of a cabin heat exchanger in the cabin heating circuit; determine a first rotating speed of a compressor in the air conditioning system according to the first difference, and determine a second rotating speed of the compressor according to the second difference; determine a target rotating speed according to the first rotating speed and the second rotating speed; control the compressor to operate at the target rotating speed.

7. The method of claim 1, wherein, After the control of the air conditioning system, the method further comprises: obtaining an ambient temperature corresponding to an environment in which the vehicle is located; in a case where the ambient temperature is less than a temperature threshold, controlling a waste heat recovery component in the vehicle to operate, so as to deliver, by the waste heat recovery component, waste heat of a motor and an electronic control in the vehicle to an evaporator in the air conditioning system.

8. The method of claim 7, wherein, After the control of the waste heat recovery component in the vehicle, the method further comprises: determining a first energy value corresponding to a heat absorption demand of the evaporator in the air conditioning system, and obtaining a second energy value corresponding to the waste heat recovered by the waste heat recovery component; in a case where it is determined, according to the first energy value and the second energy value, that the waste heat recovered by the waste heat recovery component does not meet the heat absorption demand of the evaporator, controlling a positive temperature coefficient heater in the vehicle to operate, so as to provide heat to the evaporator.

9. A vehicle characterized by comprising: The method comprises: a obtaining module, configured to obtain a cabin temperature corresponding to a cabin in a vehicle, a battery temperature corresponding to a battery in the vehicle, and a remaining electric quantity of the battery; a judging module, configured to judge, according to the cabin temperature, the battery temperature, and the remaining electric quantity, whether the battery and the cabin have a heating demand, to obtain a judgment result; a control module, configured to, in a case where the judgment result indicates that the cabin and / or the battery have a heating demand, control the air conditioning system to operate, and adjust an opening degree of the refrigerant adjusting component according to the judgment result, so as to shunt refrigerant entering the battery heating circuit and the cabin heating circuit.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to implement the vehicle control method according to any one of claims 1-8.

Images