CN117183666A

CN117183666A - Vehicle control method and device and vehicle

Info

Publication number: CN117183666A
Application number: CN202311274273.0A
Authority: CN
Inventors: 胡康; 孙明
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2023-12-08

Abstract

The application provides a vehicle control method and device and a vehicle, wherein the vehicle control method comprises the following steps: when the passenger cabin of the vehicle needs to be heated, controlling a heat pump to absorb the waste heat of a motor and/or the environmental heat, and controlling the heat pump to heat the passenger cabin; heating the battery through motor waste heat, a heater or a heat pump based on a preset control strategy according to the current vehicle scene of the vehicle and the state information of the battery; wherein the predetermined control strategy includes a sub-strategy that determines the heating benefit of the battery. The reasonable distribution of the waste heat of the motor is realized, the heating mode of the battery is more reasonable, and the purpose of improving the endurance mileage of the vehicle is further achieved.

Description

Vehicle control method and device and vehicle

Technical Field

The present application relates to the field of automotive technologies, and in particular, to a vehicle control method and apparatus, and a vehicle.

Background

At present, the phenomenon of energy shortage is increasingly obvious, and the call for the development of new energy is increasingly strong. In this context, new energy vehicles have been rapidly developed.

For new energy vehicles, the energy consumption is very important, the endurance mileage of the whole vehicle is directly related, and factors affecting the energy consumption of the whole vehicle relate to aspects, and main factors include battery energy attenuation at low temperature. Therefore, it is necessary to heat the battery when the ambient temperature is low. If the automobile heater PTC (Positive Temperature Coefficient) is directly used for heating the battery, the whole driving mileage can be greatly affected.

Therefore, it is necessary to develop a strategy for reasonably selecting a heating mode of the battery so as to effectively improve the range of the vehicle at a low temperature.

Disclosure of Invention

Therefore, the application aims to provide a vehicle control method and device and a vehicle, and aims to reasonably select a heating mode of a battery and a passenger cabin through reasonably utilizing the waste heat of a motor so as to achieve the purpose of improving the endurance mileage of the vehicle.

In view of the above object, the present application provides, in a first aspect, a control method of a vehicle, including:

when the passenger cabin of the vehicle needs to be heated, controlling a heat pump to absorb the waste heat of a motor and/or the environmental heat, and controlling the heat pump to heat the passenger cabin;

heating the battery through motor waste heat, a heater or a heat pump based on a preset control strategy according to the current vehicle scene of the vehicle and the state information of the battery;

wherein the predetermined control strategy comprises a sub-strategy that determines a heating benefit of the battery.

Further, the driving scene comprises a long-distance driving scene, and the state information comprises the current temperature of the battery;

the heating of the battery by the motor waste heat, the heater or the heat pump based on a preset control strategy according to the current vehicle scene of the vehicle and the state information of the battery comprises the following steps:

If the vehicle scene is the long-distance vehicle scene, determining heating gain of the battery based on the current temperature;

if the heating gain of the battery is positive, controlling the heat pump, the motor waste heat and the heater to heat the battery;

and if the heating gain of the battery is negative, not heating the battery.

Further, the determining a heating benefit of the battery based on the current temperature includes:

determining a first amount of power to be consumed to raise the temperature of the battery from the current temperature to a first target temperature, and an increase in the remaining amount of power of the battery when the temperature of the battery is raised from the current temperature to the first target temperature;

the difference between the increment and the first amount of electricity is determined as the heating benefit.

Further, the controlling the heat pump, the motor waste heat and the heater to heat the battery includes:

reducing the set second target temperature of the passenger cabin, and controlling a valve of the motor water outlet to the battery water loop to open a preset value;

and if the difference between the inlet water temperature of the battery and the first target temperature is smaller than a first set value, stopping heating the battery, otherwise, increasing the operating power of the heat pump and/or increasing the operating power of the heater until the difference between the inlet water temperature of the battery and the first target temperature is smaller than the first set value.

Further, the driving scene includes a short-distance driving scene, and the heating of the battery by the motor waste heat, the heater or the heat pump based on a predetermined control strategy according to the current driving scene of the vehicle and the state information of the battery includes:

if the vehicle scene is the short-distance vehicle scene and the actual temperature of the passenger cabin does not reach the set second target temperature, heating the passenger cabin through the heat pump and/or the heater;

and if the vehicle scene is the short-distance vehicle scene and the actual temperature of the passenger cabin reaches the set second target temperature, heating the battery through motor waste heat if a heating request of the battery is received.

Further, the heating of the passenger compartment by the heat pump and/or the heater includes:

controlling the rotation speed of the compressor of the heat pump to rise according to a first preset speed until the actual temperature of the passenger cabin reaches the second target temperature or the rotation speed of the compressor of the heat pump reaches the allowable maximum rotation speed;

and if the rotating speed of the compressor of the heat pump reaches the allowable highest rotating speed, but the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the heater to start so that the heater and the heat pump heat the passenger cabin together.

Further, the controlling the heater to be started so that the heater and the heat pump jointly heat the passenger cabin includes:

and if the operating power of the heater does not reach the allowable maximum power and the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the operating power of the heater to be increased according to a second preset rate until the actual temperature of the passenger cabin reaches the second target temperature or the operating power of the heater reaches the allowable maximum power.

Further, the heating the battery by the motor waste heat includes:

and under the condition that the actual temperature of the passenger cabin reaches the set second target temperature, controlling the opening of a valve for leading the motor outlet water to the battery heating loop to be increased according to a third preset rate until the inlet water temperature of the battery reaches the set third target temperature.

Based on the above object, the present application also provides a control device of a vehicle, including:

the first control module is used for controlling the heat pump to absorb the waste heat of the motor and/or the environmental heat and controlling the heat pump to heat the passenger cabin when the passenger cabin of the vehicle needs to be heated;

The second control module is used for heating the battery through motor waste heat, a heater or a heat pump and/or heating the passenger cabin through the heater based on a preset control strategy according to the current vehicle scene of the vehicle and the state information of the battery;

In view of the above object, the present application also provides, in a third aspect, a vehicle including the control device as described in the above second aspect.

From the above, the control method of the vehicle provided by the application controls the heat pump to absorb the waste heat of the motor and/or the environmental heat and controls the heat pump to heat the passenger cabin when the passenger cabin of the vehicle needs to be heated, so that the heating requirement of the passenger cabin is ensured to be responded, and the driving experience of drivers and passengers is improved; and the heating mode (comprising motor waste heat, heat pump or heater) of the battery is reasonably selected at least according to the heating income of the battery, the current vehicle scene of the vehicle and the state information of the battery, so that the reasonable distribution of the motor waste heat is realized, the heating mode of the battery is more reasonable, and the purpose of improving the endurance mileage of the vehicle is further achieved.

Drawings

In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.

FIG. 1 is a flow chart of a method for controlling a vehicle according to an embodiment of the application;

FIG. 2 is a flowchart of a control strategy when a current driving scene of a vehicle is a long distance driving scene according to an embodiment of the present application;

FIG. 3 is a flowchart of a control strategy when a current driving scene of a vehicle is a short-distance driving scene according to an embodiment of the present application;

fig. 4 is a schematic structural view of a control device for a vehicle according to an embodiment of the present application;

fig. 5 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

The present application will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present application more apparent.

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

For new energy vehicles, the energy consumption is very important, and the endurance mileage of the whole vehicle is directly related. In a low-temperature environment, the battery energy is attenuated, so that the battery needs to be heated to ensure that the battery energy is not attenuated and the discharging capability of the battery is ensured. At the same time, the passenger compartment also needs to be heated to provide a more comfortable ride environment for the occupants. However, if the car heater PTC (Positive Temperature Coefficient) is directly used to heat the battery and the passenger compartment, the whole driving range will be greatly affected. This is because the energy efficiency ratio COP (Coefficient Of Performance) of PTC can be only 1 at maximum, so the heat pump technology is applied to heating of a new energy vehicle, because the COP value of the heat pump can reach 3 under appropriate conditions; meanwhile, the motor waste heat recovery function can also be used for improving the endurance mileage of the vehicle. Based on the scheme, the application aims to develop a strategy, reasonably select the heating modes and the heating occasions of the battery and the passenger cabin, reasonably distribute the waste heat of the motor and achieve the aim of improving the endurance mileage of the whole vehicle on the premise of ensuring that the energy of the battery is not attenuated and the temperature of the passenger cabin is proper.

In some embodiments, fig. 1 shows a flow diagram of a control method of a vehicle, which may be performed by a control device of the vehicle, which may be implemented in software and/or hardware and may be integrated into the vehicle or a server. As shown in fig. 1, the control method of the vehicle includes the steps of:

and S110, when the passenger cabin of the vehicle needs to be heated, controlling the heat pump to absorb the motor waste heat and/or the environmental heat, and controlling the heat pump to heat the passenger cabin.

Wherein it may be determined whether the passenger compartment of the vehicle needs to be heated by an active manner, for example, in some embodiments, it may be determined whether the passenger compartment of the vehicle needs to be heated based on an actual temperature of the passenger compartment, for example, it may be predetermined that the passenger compartment of the vehicle needs to be heated when the actual temperature of the passenger compartment is below 10 ℃. The actual temperature of the passenger compartment may be detected by an on-board temperature sensor. In other embodiments, it may also be determined whether the passenger compartment of the vehicle needs to be heated based on the current ambient temperature, for example, it may be determined that the passenger compartment of the vehicle needs to be heated when the ambient temperature is below 10 ℃. The ambient temperature can be obtained through detection of a vehicle-mounted temperature sensor, and can also be obtained from a weather platform through networking with the weather platform. In particular, in some embodiments, when the heat pump of the vehicle is detected to be in an operating state, it may be determined that the passenger compartment of the vehicle needs to be heated, because the heat pump of the vehicle may be automatically started and the passenger compartment heated when the ambient temperature is low.

In other embodiments, it may also be determined whether the passenger compartment of the vehicle needs to be heated by passive reception, e.g., when a driver-triggered heating request is received, it may be determined that the passenger compartment of the vehicle needs to be heated. The manner of triggering the heating request by the driver and the passenger can be through a physical button (the physical button can be arranged in the passenger cabin or on a car key), or can be through a virtual key on a vehicle-mounted central control large screen, or can be triggered through an application program of a mobile terminal (such as a mobile phone).

Further, in some embodiments, if the heat pump is capable of absorbing ambient heat, the heat pump is controlled to absorb ambient heat or absorb motor waste heat at the same time as ambient heat. The heat pump is limited by the realization technology of the heat pump, when the ambient temperature is lower (for example, lower than-10 ℃) and the heat pump can not absorb the ambient heat again, the heat pump is controlled to absorb the motor waste heat at the moment so as to heat the passenger cabin, the full recycling of the motor waste heat is realized, the heating requirement of the passenger cabin is ensured to be responded, and the driving experience of drivers and passengers is improved. The heat pump is controlled to absorb the environmental heat and also absorb the motor waste heat, so that the heating efficiency of the heat pump is improved, the power consumption of a heat pump compressor is reduced, and the purposes of saving energy and improving the whole vehicle endurance mileage are achieved.

S120, heating the battery through motor waste heat, a heater or a heat pump based on a preset control strategy according to the current vehicle scene of the vehicle and the state information of the battery; wherein the predetermined control strategy comprises a sub-strategy that determines a heating benefit of the battery.

For example, the current vehicle scene of the vehicle may be divided from the length of the current trip of the vehicle, e.g., the current vehicle scene of the vehicle may be a long distance vehicle scene or a short distance vehicle scene. The current journey length of the vehicle can be determined according to the current navigation information of the vehicle. Further, a scene in which the continuous driving range of the vehicle is greater than the range threshold value may be defined as a long-distance vehicle scene, and a scene in which the continuous driving range of the vehicle is less than or equal to the range threshold value may be defined as a short-distance vehicle scene. It should be noted that, the meaning of the continuous driving mileage of the vehicle may be the driving mileage of the vehicle all the time, or may be the accumulated driving mileage of multiple driving when the parking time between two adjacent driving is less than the time threshold. For example, the vehicle starts from the first place to the second place, passes through the two service areas halfway, and the driver has a rest for 5 minutes in each service area, and the vehicle is in a flameout state when the driver has a rest, and the distance from the first place to the second place is determined as the continuous driving mileage because the parking time between two adjacent driving is less than a time threshold.

The current vehicle scene of the vehicle can also be divided from the ambient temperature, for example, the current vehicle scene of the vehicle can be a colder vehicle scene or a very cold vehicle scene, etc.

The state information of the battery may be, for example, a current temperature of the battery and/or a current remaining capacity of the battery, etc. Different car scenes, different battery state information, should select different heating methods to heat the battery, for example under the short-distance car scene, when the current temperature of battery is lower, can select motor waste heat to slowly heat the battery, can guarantee battery energy not decay can, need not to use the heater to heat the battery fast, on the one hand, use the heater to heat comparatively consume energy, be unfavorable for improving the range of whole car, on the other hand, under the short-distance car scene, when the battery temperature just appears to rise to a certain higher numerical value easily, the vehicle is owing to reaching the condition that the destination is flamed out and is stopped, then there is the problem of energy waste, leads to the range to reducing. For another example, in very cold vehicle scenarios, a heater may be used to rapidly heat the battery in order to ensure that the battery energy does not decay.

The heating gain of the battery can be understood as: for the whole vehicle, the battery is heated, so that the energy of the whole vehicle is increased.

In summary, by referring to the current vehicle scene of the vehicle, the state information of the battery and the heating income of the battery, reasonable selection of the heating mode of the battery is facilitated, and the purposes of saving energy as much as possible and improving the endurance mileage are achieved on the premise of ensuring that the energy of the battery is not attenuated.

In some embodiments, the occupancy scene comprises a coach occupancy scene, and the status information comprises a current temperature of the battery. In some embodiments, the driver actively sets the driving scene of the vehicle as a long distance driving scene, for example, the driver sets the current driving scene as the long distance driving scene through a central control screen in the passenger cabin, or sets the current driving scene of the vehicle as the long distance driving scene through a mobile terminal. If the current car scene information of the car set by the driver is not detected, defaulting to the fact that the current car scene of the car is a short-distance car scene.

if the vehicle scene is the long-distance vehicle scene, determining heating gain of the battery based on the current temperature; if the heating gain of the battery is positive, controlling the heat pump, the motor waste heat and the heater to heat the battery; and if the heating gain of the battery is negative, not heating the battery.

Under the condition that the heating gain of the battery is determined to be a positive value, the heat pump, the motor waste heat and the heater are controlled to heat the battery, so that the electric quantity of the whole vehicle can be increased, further, the cruising mileage of the vehicle is improved, and the anxiety of drivers and passengers on the cruising mileage during long-distance driving can be relieved. Particularly, when the current car use scene of the vehicle is a long-distance car use scene, the running time of the vehicle can be judged to be longer, the situation that the temperature of the battery is just heated to the target temperature, and the vehicle is stopped by flameout when reaching a destination can not occur, and the utilization rate of energy consumed by heating the battery is not high. Therefore, in the embodiment of the application, when the current car use scene of the vehicle is a long-distance car use scene, the current heating gain of the battery is determined, and under the condition that the heating gain is positive, the heat pump, the motor waste heat and the heater are controlled to heat the battery so as to increase the heating force of the battery and increase the temperature of the battery as soon as possible.

In some embodiments, the determining the heating benefit of the battery based on the current temperature comprises:

determining a first amount of power to be consumed to raise the temperature of the battery from the current temperature to a first target temperature, and an increase in the remaining amount of power of the battery when the temperature of the battery is raised from the current temperature to the first target temperature; the difference between the increment and the first amount of electricity is determined as the heating benefit. And if the increment is larger than the first electric quantity, the current heating gain of the battery is a positive value, if the increment is smaller than the first electric quantity, the current heating gain of the battery is a negative value, and if the increment is equal to the first electric quantity, the current heating gain of the battery is zero.

Wherein a first amount of electricity that is consumed to raise the temperature of the battery from the current temperature to the first target temperature, and an increase in the remaining amount of electricity of the battery when the temperature of the battery is raised from the current temperature to the first target temperature may be determined in a pre-calibrated manner. For example, reference is made to a first electric quantity consumed for increasing the temperature of the battery from the current temperature (i.e., the start temperature) to the first target temperature (i.e., the end temperature) when the current remaining electric quantity of the battery is different as shown in tables 1 to 3, and a correspondence table of an increment of the remaining electric quantity of the battery when the temperature of the battery is increased from the current temperature to the first target temperature. Wherein, the current residual capacity of the corresponding battery in the table 1 is 80%, when the temperature of the battery is increased from-20 ℃ to-15 ℃, the consumed first electric quantity is 1kwh, and the recovered electric quantity is 0.4kwh; when the temperature of the battery is increased from-20 ℃ to-10 ℃, the consumed first electric quantity is 2kwh, and the recovered electric quantity is 0.8kwh; when the temperature of the battery is increased from-20 ℃ to-5 ℃, the consumed first electric quantity is 3kwh, and the recovered electric quantity is 3.2kwh; when the temperature of the battery is increased from-20 ℃ to 0 ℃, the consumed first electric quantity is 4kwh, and the recovered electric quantity is 4.8kwh; when the temperature of the battery was increased from-20 ℃ to 5 ℃, the first amount of electricity consumed was 5kwh and the amount of electricity recovered was 5.6kwh.

Similarly, table 2 corresponds to a battery current remaining capacity of 60%, the first consumed capacity is 1kwh and the recovered capacity is 0.3kwh when the temperature of the battery increases from-20 ℃ to-15 ℃; when the temperature of the battery is increased from-20 ℃ to-10 ℃, the consumed first electric quantity is 2kwh, and the recovered electric quantity is 0.6kwh; when the temperature of the battery is increased from-20 ℃ to-5 ℃, the consumed first electric quantity is 3kwh, and the recovered electric quantity is 2.4kwh; when the temperature of the battery is increased from-20 ℃ to 0 ℃, the first consumed electric quantity is 4kwh, and the recovered electric quantity is 3.6kwh; when the temperature of the battery was increased from-20 ℃ to 5 ℃, the first amount of electricity consumed was 5kwh and the amount of electricity recovered was 4.2kwh.

Table 3 corresponds to a current remaining capacity of the battery of 40%, the first consumed capacity is 1kwh and the recovered capacity is 0.2kwh when the temperature of the battery increases from-20 ℃ to-15 ℃; when the temperature of the battery is increased from-20 ℃ to-10 ℃, the consumed first electric quantity is 2kwh, and the recovered electric quantity is 0.4kwh; when the temperature of the battery is increased from-20 ℃ to-5 ℃, the consumed first electric quantity is 3kwh, and the recovered electric quantity is 1.6kwh; when the temperature of the battery is increased from-20 ℃ to 0 ℃, the first consumed electric quantity is 4kwh, and the recovered electric quantity is 2.4kwh; when the temperature of the battery was increased from-20 ℃ to 5 ℃, the first amount of electricity consumed was 5kwh and the amount of electricity recovered was 2.8kwh.

The first power consumed and the recovered power (i.e., the increment) may be determined through experiments, or may be determined through a certain calibration method.

TABLE 1

TABLE 2

TABLE 3 Table 3

Further, the corresponding relations among the first target temperatures, the first electric quantities and the increments listed in the above tables 1 to 3 may be referred to as basic relations, and the corresponding relations under other data may be obtained by an expansion manner according to the basic relations, which is more efficient than the calibration manner. For example, the correspondence relationship under other data is obtained by expanding the correspondence relationship shown in the above tables 1 to 3, and as shown in table 4, the correspondence relationship under other data is obtained by expanding the correspondence relationship based on the data shown in table 1, wherein the initial temperature t2= -15 ℃, and the initial temperature is the current temperature of the battery. Where T3 'represents the power consumption when the termination temperature is T3 in table 1, T3' =2 is shown in table 1, T3 "represents the recovery power when the termination temperature is T3 in table 1, and T3" =0.8 is shown in table 1. Similarly, T4' represents the power consumption when the termination temperature is T4 in table 1, T4' =3 is shown in table 1, T4 "represents the recovery power when the termination temperature is T4 in table 1, and T4' =3.2 is shown in table 1. Where T5' represents the power consumption when the termination temperature is T5 in table 1, T5' =4 is shown in table 1, and T5 "represents the recovery power when the termination temperature is T5 in table 1, and T5' =4.8 is shown in table 1. Where T6 'represents the power consumption when the termination temperature is T6 in table 1, T6' =5 is shown in table 1, and T6 "represents the recovery power when the termination temperature is T6 in table 1, and T6" =5.6 is shown in table 1.

TABLE 4 Table 4

In some embodiments, the controlling the heat pump, the motor waste heat, and the heater to heat the battery includes:

reducing the set second target temperature of the passenger cabin, and controlling a valve of the motor water outlet to the battery water loop to open a preset value; the second target temperature of the passenger cabin is reduced, so that energy is saved, the saved energy is used for heating the battery, and the battery is heated as soon as possible. The energy of the whole vehicle can be increased by heating the battery as soon as possible, and the continuous voyage mileage of the whole vehicle can be improved. The valve for controlling the water outlet of the motor to lead to the battery water loop is opened by a preset value, so that the purpose is to stabilize the water flow from the motor water loop to the battery water loop, and part of motor waste heat can be distributed to the battery by controlling the valve to open, thereby being beneficial to heating the battery as soon as possible and saving energy consumption.

And if the difference between the inlet water temperature of the battery and the first target temperature is smaller than a first set value, stopping heating the battery, otherwise, increasing the operating power of the heat pump and/or increasing the operating power of the heater until the difference between the inlet water temperature of the battery and the first target temperature is smaller than the first set value. In other words, the essence of the above feature is to control the heat pump and the heater to stop heating the battery if the inlet water temperature of the battery has approached the first set value; and if the inlet water temperature of the battery is far from the first set value, controlling the running power of the heat pump to be increased and/or controlling the running power of the heater to be increased until the inlet water temperature of the battery is close to the first target temperature, and controlling the heat pump and the heater to stop heating the battery.

Exemplary, referring to a control strategy flowchart when the current driving scene of the vehicle is a long distance driving scene as shown in fig. 2, specifically includes:

when the heat pump is started and the vehicle scene is a long distance vehicle scene, the controller judges whether the electric quantity consumed for heating the battery is smaller than the recovered electric quantity based on the current temperature of the battery, if so, the heat pump is controlled to absorb the motor waste heat and/or the environment heat to heat the passenger cabin and the battery, and the heater and the motor waste heat are controlled to heat the battery, and if not, the heat pump is controlled to absorb the motor waste heat or the environment heat to heat the passenger cabin, and the battery is not heated.

Further, if yes, controlling the heat pump to absorb the motor waste heat or the environmental heat to heat the passenger cabin and the battery, and controlling the heater and the motor waste heat to heat the battery, including: the second target temperature of the set passenger cabin is regulated down (for example, 4 ℃ is regulated down) so as to save energy and heat the battery, so that the battery is heated as soon as possible, namely, the heating capacity of the heat pump to the battery is enhanced; the heat pump and the heater are operated to heat the battery at a certain power, the opening of the electromagnetic valve for enabling the water discharged from the motor to enter the battery loop is kept stable to stabilize the water flow entering the battery loop, the battery pump operates at a constant rotating speed to accelerate the water flow of the battery loop, the difference between the inlet water temperature of the battery and the first target temperature is determined in real time, if the difference is smaller than a first set value (for example, 2 ℃), the heat pump and the heater are controlled to stop heating the battery and control the heat pump to heat the passenger cabin, otherwise, the operating power of the heat pump is increased and/or the operating power of the heater is increased (for example, the operating power of the heat pump and the heater is increased by 10%).

In other words, when the passenger cabin has a heating requirement, the heating capacity of the passenger cabin is increased, so that the heating requirement is met, and therefore, a comfortable driving temperature can be provided for a driver and passengers, and the driving experience of the driver and passengers can be improved. After the heating requirement of the passenger cabin is met, if the battery has the heating requirement, the battery is heated by the waste heat of the motor, so that the temperature of the battery is slowly increased, and the energy saving purpose is realized under the condition that the energy of the battery is not attenuated. Particularly, in a short-distance vehicle scene, when the battery temperature is just raised to a certain higher value, the vehicle is stopped due to flameout at a destination, and at the moment, the problem of energy waste exists, so that the endurance mileage is reduced. Therefore, under the short-distance vehicle use scene, the battery is heated by using the motor waste heat in a reasonable heating mode, so that the energy conservation is realized and the endurance mileage of the vehicle is improved.

In some embodiments, if the vehicle scenario is the short-range vehicle scenario and the actual temperature of the passenger compartment does not reach the set second target temperature, the heating the passenger compartment by the heat pump and/or the heater includes:

and controlling the rotation speed of the compressor of the heat pump to rise according to a first preset speed until the actual temperature of the passenger cabin reaches the second target temperature or the rotation speed of the compressor of the heat pump reaches the allowable maximum rotation speed. And if the rotating speed of the compressor of the heat pump reaches the allowable highest rotating speed, but the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the heater to start so that the heater and the heat pump heat the passenger cabin together. In other words, the actual temperature of the passenger cabin is detected according to a certain frequency, if the actual temperature of the passenger cabin is detected not to rise to the set second target temperature, the compressor rotation speed of the heat pump is controlled to rise a little, if the next detection determines that the actual temperature of the passenger cabin is not yet raised to the set second target temperature, the compressor rotation speed of the heat pump is controlled to rise a little, and the cycle is performed until the actual temperature of the passenger cabin is detected to rise to the set second target temperature, the compressor rotation speed of the heat pump is not controlled to rise any more, and the current rotation speed is maintained to continue to operate, so that the passenger cabin is continuously heated. If the rotational speed of the compressor of the heat pump has been increased to the allowable maximum rotational speed, but the actual temperature of the passenger cabin has not been increased to the set second target temperature, it is indicated that the passenger cabin is heated only by the heat pump with some effort, and at this time, in order to raise the actual temperature of the passenger cabin to the second target temperature as soon as possible, the heater is controlled to be started, so that the heater and the heat pump heat the passenger cabin together, the heating capacity of the passenger cabin is increased, and the temperature of the passenger cabin is raised as soon as possible, so that a more comfortable driving environment can be provided for the driver and the passengers, and the driving experience is facilitated to be improved.

and if the operating power of the heater does not reach the allowable maximum power and the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the operating power of the heater to be increased according to a second preset rate until the actual temperature of the passenger cabin reaches the second target temperature or the operating power of the heater reaches the allowable maximum power. In other words, the actual temperature of the passenger cabin is detected according to a certain frequency, if the actual temperature of the passenger cabin is detected not to rise to the set second target temperature, the operation power of the heater is controlled to rise a little, if the next detection determines that the actual temperature of the passenger cabin is not yet raised to the set second target temperature, the operation power of the heater is controlled to rise a little, and the operation power of the heater is controlled to rise again, so that the operation power of the heater is not controlled to rise until the actual temperature of the passenger cabin is detected to rise to the set second target temperature, and the current operation power of the heater is maintained to continue to operate, so that the passenger cabin is continuously heated. If the actual temperature of the passenger compartment has not yet risen to the set second target temperature when the operating power of the heater reaches the allowable maximum power, the operating power of the heater is maintained to allow the maximum power operation.

In some embodiments, if the vehicle scene is the short-distance vehicle scene and the actual temperature of the passenger compartment has reached the set second target temperature, heating the battery by the motor waste heat when the heating request of the battery is received, including:

and under the condition that the actual temperature of the passenger cabin reaches the set second target temperature, controlling the opening of a valve for leading the motor outlet water to the battery heating loop to be increased according to a third preset rate until the inlet water temperature of the battery reaches the set third target temperature or the opening of the valve reaches the allowable maximum value. The larger the opening of the valve of the motor water outlet to the battery heating loop is, the more the motor waste heat is distributed to the battery, and the stronger the heating capacity of heating the battery is. Therefore, the inlet water temperature of the battery is detected according to a certain frequency, if the inlet water temperature of the battery is detected to not reach the set third target temperature, the opening degree of the valve is controlled to be increased a little, if the inlet water temperature of the battery is detected to not reach the set third target temperature in the next detection, the opening degree of the valve is controlled to be increased a little again, and the cycle is performed until the inlet water temperature of the battery reaches the set third target temperature, and the opening degree of the valve is not controlled to be increased any more. If the opening of the valve has reached the allowable maximum value, but the inlet water temperature of the battery has not reached the set third target temperature, the opening of the valve is kept at the maximum value at this time, so that the temperature of the battery is raised as soon as possible.

In some embodiments, referring to a control strategy flowchart when a current driving scene of a vehicle is a short-distance driving scene as shown in fig. 3, the control strategy flowchart specifically includes: when the heat pump is started and the vehicle using scene is a short-distance vehicle using scene, controlling the heat pump to absorb the waste heat of the motor and/or the environmental heat, and controlling the heat pump to heat the passenger cabin, specifically, if the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the rotation speed of the compressor of the heat pump to be increased according to the first preset speed (for example, 500r/min is increased each time) until the actual temperature of the passenger cabin reaches the second target temperature, or the rotation speed of the compressor of the heat pump reaches the allowable maximum rotation speed. And if the rotating speed of the compressor of the heat pump reaches the allowable highest rotating speed, but the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the heater to start so that the heater and the heat pump heat the passenger cabin together. Further, if the operating power of the heater does not reach the allowable maximum power and the actual temperature of the passenger compartment does not reach the set second target temperature, the operating power of the heater is controlled to be increased according to a second preset rate (for example, 10% each time), until the actual temperature of the passenger compartment reaches the second target temperature or the operating power of the heater reaches the allowable maximum power. And if the actual temperature of the passenger cabin reaches the set second target temperature and a heating request of the battery is received, heating the battery through motor waste heat. Specifically, under the condition that the actual temperature of the passenger cabin reaches the set second target temperature, controlling the opening of a valve for leading the motor outlet water to the battery heating loop to be increased according to a third preset rate (for example, 10% of the motor outlet water is increased each time) until the inlet water temperature of the battery reaches the set third target temperature or the opening of the valve reaches the allowable maximum value.

According to the vehicle control method provided by the embodiment of the application, the long-distance vehicle scene and the short-distance vehicle scene are divided based on the vehicle scene, the heating sources of the battery and the passenger cabin are reasonably selected by referring to the vehicle scene and the state information of the battery, and whether the battery needs to be heated or not is analyzed, so that the heating mode is reasonably selected or whether the battery needs to be heated or not is analyzed, and further more cruising ability is obtained under the condition that the heating or heating requirement is met.

It should be noted that, the method of the embodiment of the present application may be performed by a single device, for example, a computer or a server. The method of the embodiment can also be applied to a distributed scene, and is completed by mutually matching a plurality of devices. In the case of such a distributed scenario, one of the devices may perform only one or more steps of the method of an embodiment of the present application, the devices interacting with each other to accomplish the method.

It should be noted that the foregoing describes some embodiments of the present application. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Based on the same inventive concept, the present application also provides a control device of a vehicle, corresponding to the method of any embodiment described above, as shown in fig. 4, where the control device of a vehicle includes: the first control module 410 is configured to control the heat pump to absorb the motor waste heat and/or the environmental heat and control the heat pump to heat the passenger compartment of the vehicle when the passenger compartment needs to be heated; the second control module 420 is configured to heat the battery through a motor waste heat, a heater or a heat pump and/or heat the passenger cabin through a heater based on a predetermined control strategy according to a current vehicle scene of the vehicle and state information of the battery; wherein the predetermined control strategy comprises a sub-strategy that determines a heating benefit of the battery.

Further, the driving scene comprises a long-distance driving scene, and the state information comprises the current temperature of the battery; the second control module 420 includes: the heating benefit calculating unit is used for determining the heating benefit of the battery based on the current temperature if the vehicle scene is the long-distance vehicle scene; the first control unit is used for controlling the heat pump, the motor waste heat and the heater to heat the battery if the heating gain of the battery is positive; and if the heating gain of the battery is negative, not heating the battery.

Further, the heating benefit calculating unit is specifically configured to: determining a first amount of power to be consumed to raise the temperature of the battery from the current temperature to a first target temperature, and an increase in the remaining amount of power of the battery when the temperature of the battery is raised from the current temperature to the first target temperature;

Further, the first control unit is specifically configured to: reducing the set second target temperature of the passenger cabin, and controlling a valve of the motor water outlet to the battery water loop to open a preset value; and if the difference between the inlet water temperature of the battery and the first target temperature is smaller than a first set value, stopping heating the battery, otherwise, increasing the operating power of the heat pump and/or increasing the operating power of the heater until the difference between the inlet water temperature of the battery and the first target temperature is smaller than the first set value.

Further, the driving scene includes a short-distance driving scene, and the second control module 420 includes: the second control unit is used for heating the passenger cabin through the heat pump and/or the heater if the vehicle scene is the short-distance vehicle scene and the actual temperature of the passenger cabin does not reach the set second target temperature; and the third control unit is used for heating the battery through motor waste heat if the vehicle scene is the short-distance vehicle scene and the actual temperature of the passenger cabin reaches the set second target temperature and the heating request of the battery is received.

Further, the second control unit includes a first subunit and a second subunit, where the first subunit is configured to: controlling the rotation speed of the compressor of the heat pump to rise according to a first preset speed until the actual temperature of the passenger cabin reaches the second target temperature or the rotation speed of the compressor of the heat pump reaches the allowable maximum rotation speed; the second subunit is configured to: and if the rotating speed of the compressor of the heat pump reaches the allowable highest rotating speed, but the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the heater to start so that the heater and the heat pump heat the passenger cabin together.

Further, the second subunit is specifically configured to: and if the operating power of the heater does not reach the allowable maximum power and the actual temperature of the passenger cabin does not reach the set second target temperature, controlling the operating power of the heater to be increased according to a second preset rate until the actual temperature of the passenger cabin reaches the second target temperature or the operating power of the heater reaches the allowable maximum power.

Further, the third control unit is specifically configured to: and under the condition that the actual temperature of the passenger cabin reaches the set second target temperature, controlling the opening of a valve for leading the motor outlet water to the battery heating loop to be increased according to a third preset rate until the inlet water temperature of the battery reaches the set third target temperature or the opening of the valve reaches the allowable maximum value.

For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present application.

The device of the foregoing embodiment is used to implement the corresponding vehicle control method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.

Based on the same inventive concept, the application also provides an electronic device corresponding to the method of any embodiment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the control method of the vehicle of any embodiment when executing the program.

Based on the same inventive concept, the application also provides a vehicle corresponding to the method of any embodiment, wherein the vehicle comprises the electronic equipment.

Fig. 5 shows a more specific hardware architecture of an electronic device according to this embodiment, where the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. Wherein processor 1010, memory 1020, input/output interface 1030, and communication interface 1040 implement communication connections therebetween within the device via a bus 1050.

The processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit ), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, etc. for executing relevant programs to implement the technical solutions provided in the embodiments of the present disclosure.

The Memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage device, dynamic storage device, or the like. Memory 1020 may store an operating system and other application programs, and when the embodiments of the present specification are implemented in software or firmware, the associated program code is stored in memory 1020 and executed by processor 1010.

The input/output interface 1030 is used to connect with an input/output module for inputting and outputting information. The input/output module may be configured as a component in a device (not shown) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.

Communication interface 1040 is used to connect communication modules (not shown) to enable communication interactions of the present device with other devices. The communication module may implement communication through a wired manner (such as USB, network cable, etc.), or may implement communication through a wireless manner (such as mobile network, WIFI, bluetooth, etc.).

Bus 1050 includes a path for transferring information between components of the device (e.g., processor 1010, memory 1020, input/output interface 1030, and communication interface 1040).

It should be noted that although the above-described device only shows processor 1010, memory 1020, input/output interface 1030, communication interface 1040, and bus 1050, in an implementation, the device may include other components necessary to achieve proper operation. Furthermore, it will be understood by those skilled in the art that the above-described apparatus may include only the components necessary to implement the embodiments of the present description, and not all the components shown in the drawings.

The electronic device of the foregoing embodiment is configured to implement the corresponding method for controlling a vehicle in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.

Based on the same inventive concept, the present application also provides a non-transitory computer readable storage medium storing computer instructions for causing the computer to execute the method of controlling a vehicle according to any of the above embodiments, corresponding to the method of any of the above embodiments.

The computer readable media of the present embodiments, including both permanent and non-permanent, removable and non-removable media, may be used to 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.

The storage medium of the above embodiment stores computer instructions for causing the computer to execute the method for controlling a vehicle according to any one of the above embodiments, and has the advantages of the corresponding method embodiments, which are not described herein.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the application as described above, which are not provided in detail for the sake of brevity.

Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and also in view of the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.

While the application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are within the spirit and principles of the embodiments of the application, are intended to be included within the scope of the application.

Claims

1. A control method of a vehicle, characterized by comprising:

2. The method of claim 1, wherein the occupancy scene comprises a coach occupancy scene, and the status information comprises a current temperature of the battery;

and if the heating gain of the battery is negative, not heating the battery.

3. The method of claim 2, wherein the determining the heating benefit of the battery based on the current temperature comprises:

4. The method of claim 2, wherein the controlling the heat pump, the motor waste heat, and the heater to heat the battery comprises:

5. The method of claim 1, wherein the driving scenario comprises a short-distance driving scenario, the heating the battery by a motor waste heat, a heater, or a heat pump based on a predetermined control strategy according to a current driving scenario of the vehicle and state information of the battery, comprising:

6. The method of claim 5, wherein said heating the passenger compartment by the heat pump and/or the heater comprises:

7. The method of claim 6, wherein controlling the heater activation to cause the heater and the heat pump to collectively heat the passenger compartment comprises:

8. The method of claim 5, wherein said heating the battery by motor waste heat comprises:

and under the condition that the actual temperature of the passenger cabin reaches the set second target temperature, controlling the opening of a valve for leading the motor outlet water to the battery heating loop to be increased according to a third preset rate until the inlet water temperature of the battery reaches the set third target temperature or the opening of the valve reaches the allowable maximum value.

9. A control device for a vehicle, comprising:

10. A vehicle, characterized in that the vehicle comprises the control device according to claim 9.