CN116714413A

CN116714413A - Vehicle heat control method and device and vehicle

Info

Publication number: CN116714413A
Application number: CN202310798642.XA
Authority: CN
Inventors: 薛国磊; 赵林晨; 赵子健
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-09-08

Abstract

The application provides a vehicle heat control method, a device and a vehicle, which are used for judging whether the vehicle meets heat recovery conditions or not through the current speed of the vehicle and the current distance between the vehicle and a destination, further judging whether at least one heat absorber meets the heat absorption conditions according to the current temperature of the at least one heat absorber in the vehicle under the condition that the heat recovery conditions are met, absorbing the heat of the heat absorber to the heat absorber meeting the heat absorption conditions through a heat accumulator, and realizing heat recovery of at least one of a passenger cabin, a battery and a motor meeting the heat absorption conditions.

Description

Vehicle heat control method and device and vehicle

Technical Field

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

Background

Along with the proposal of the energy-saving and emission-reduction technical route, the low carbonization development taking pure electric drive as a main line is gradually formed under the background of continuously tightening automobile fuel consumption, pollutant emission and carbon emission control regulations. Along with development of electrodynamic and intelligent, the power components are required to maintain the optimal working temperature, the requirement on the energy utilization rate of the whole automobile is higher and higher, meanwhile, the requirement on the thermal comfort of heating and refrigerating of the automobile is continuously increased, and the cruising mileage becomes an important pain point of a new energy automobile.

The pure electric vehicle market is developed at a high speed, the endurance mileage is slowly improved, the comfort level of the instant temperature control of the cockpit, the battery and electric drive assembly and the like are thermally managed and guaranteed, the performance and safety of the whole vehicle are guaranteed, and a proper thermal management scheme is adopted to optimize the endurance mileage, so that the main attention points of the thermal management at present are achieved. Particularly at low temperatures, the battery and passenger compartment need to be heated simultaneously, requiring a large amount of heat. However, the prior art has the problem of energy waste, so that the endurance mileage cannot be effectively improved.

Disclosure of Invention

Accordingly, the application aims to provide a vehicle heat control method and device and a vehicle, which solve the problem of energy waste in the prior art and improve the endurance mileage of the vehicle.

Based on the above object, the present application provides a vehicle heat control method, comprising:

judging whether the vehicle meets a heat recovery condition or not based on the current speed of the vehicle and the current distance between the vehicle and a destination;

if yes, judging whether at least one heat absorption device in the vehicle meets heat absorption conditions or not based on the current temperature of the at least one heat absorption device, wherein the heat absorption device comprises a passenger cabin, a battery or a motor;

and aiming at the heat absorption device to be subjected to heat absorption conditions, absorbing the heat of the heat absorption device by the heat reservoir of the vehicle so as to judge whether to start the heating function of the heat reservoir when the heating request is detected.

Optionally, before the determining whether the vehicle meets the heat recovery condition based on the current speed of the vehicle and the current distance between the vehicle and the destination, the method further includes:

acquiring current navigation information of the vehicle, and determining a destination of the vehicle based on the current navigation information; or alternatively, the process may be performed,

acquiring current navigation information of the vehicle, and sending the current navigation information to a cloud end so that the cloud end determines a destination of the vehicle based on historical driving information of the vehicle and the current navigation information;

And receiving the destination of the vehicle issued by the cloud.

Optionally, the determining, based on the current temperature of at least one heat absorber to be used in the vehicle, whether the at least one heat absorber to be used meets the heat absorbing condition includes:

when the device to be subjected to heat absorption comprises a passenger cabin, determining a current first temperature difference between the current cabin temperature of the passenger cabin and the current environment temperature, and if the current first temperature difference is larger than a preset first temperature difference, determining that the passenger cabin meets a heat absorption condition;

and under the condition that the heat absorption waiting device comprises a battery or a motor, determining a current second temperature difference between the current outlet temperature of the heat absorption waiting device and the current outlet temperature of the heat reservoir, and if the current second temperature difference is larger than a corresponding preset second temperature difference, determining that the heat absorption waiting device meets the heat absorption condition.

Optionally, the heat absorbing the heat of the heat absorbing device through the heat reservoir of the vehicle includes:

acquiring current heat absorption grade information of the heat reservoir;

and adjusting the valve opening of the heat reservoir based on the current heat absorption grade information, and absorbing the heat of the heat to-be-absorbed device through the adjusted heat reservoir.

Optionally, the obtaining the current heat absorption level information of the heat reservoir includes at least one of the following:

inquiring current heat absorption grade information corresponding to the current vehicle speed and the current distance in a preset first calibration table based on the current vehicle speed and the current distance, wherein the preset first calibration table is used for describing corresponding relations among the vehicle speed, the distances and the heat absorption grade information;

and determining the current heat absorption level information of the heat reservoir based on the temperature difference between the current temperature of the heat absorption device and the current environment temperature or the current water outlet temperature of the heat reservoir.

Optionally, the determining the current heat absorption level information of the heat reservoir based on the temperature difference between the current temperature of the heat absorption device and the current ambient temperature or the current water outlet temperature of the heat reservoir includes:

inquiring current heat absorption grade information corresponding to the current temperature difference in a preset second calibration table based on the current temperature difference between the current temperature of the heat absorption device and the current environment temperature or the current water outlet temperature of the heat reservoir, wherein the preset second calibration table is used for describing the corresponding relation between each temperature difference and each heat absorption grade information; or alternatively, the process may be performed,

Based on the current temperature change rate of the heat absorber to be heated and the current temperature difference between the current temperature of the heat absorber to be heated and the current environment temperature or the current water outlet temperature of the heat reservoir, inquiring current heat absorption grade information corresponding to the current temperature change rate and the current temperature difference in a preset third calibration table, wherein the preset third calibration table is used for describing the corresponding relation among the temperature differences, the temperature difference change rates and the heat absorption grade information.

controlling a heat pump system of the vehicle to recover heat of a passenger compartment and store the recovered heat into the heat reservoir in a case where a heat absorber to be heat-absorbed device satisfying the heat-absorbing condition includes the passenger compartment;

and controlling the heat reservoir to absorb heat of the heat to-be-absorbed device under the condition that the heat to-be-absorbed device meeting the heat absorbing condition comprises a motor or a battery.

Optionally, the method further comprises:

in response to detecting a heating request of at least one device to be heated, judging whether the at least one device to be heated meets a heating condition or not based on the current outlet water temperature of the heat reservoir, wherein the device to be heated comprises a passenger cabin or a battery;

And starting the heating function of the heat reservoir aiming at the device to be heated which meets the heating condition so as to heat the device to be heated through the heat reservoir.

Optionally, the determining whether the at least one device to be heated meets the heating condition based on the current outlet water temperature of the heat reservoir includes:

under the condition that a heating request of the passenger cabin is detected, determining a current third temperature difference between the current outlet water temperature of the heat reservoir and the current environment temperature, and if the current third temperature difference is larger than a preset third temperature difference, determining that the passenger cabin meets a heating condition;

under the condition that the heating request of the battery is detected, determining a current fourth temperature difference between the current water outlet temperature of the heat reservoir and the current cell temperature of the battery, and if the current fourth temperature difference is larger than a preset fourth temperature difference, determining that the battery meets the heating condition.

Optionally, before the determining whether the at least one device to be heated meets the heating condition based on the current outlet water temperature of the heat reservoir, the method further includes:

and under the condition that the heating request of the battery is detected, if the current temperature of the motor is lower than a preset temperature threshold value, executing the operation of judging whether the at least one device to be heated meets the heating condition or not based on the current water outlet temperature of the heat reservoir, and otherwise, heating the battery through the motor.

Optionally, the heating the device to be heated by the heat reservoir includes:

heating the battery through the heat reservoir under the condition that the passenger compartment meets the heating condition and the battery meets the heating condition;

and after the battery is heated, the current water outlet temperature of the heat reservoir is obtained again, whether the passenger cabin meets the heating condition is judged based on the new current water outlet temperature, and if yes, the passenger cabin is heated through the heat reservoir.

Based on the same object, the present application also provides a vehicle heat control apparatus, the apparatus comprising:

a first judging module for judging whether the vehicle satisfies a heat recovery condition based on a current vehicle speed of the vehicle and a current distance between the vehicle and a destination;

the second judging module is used for judging whether at least one heat absorption device in the vehicle meets the heat absorption condition or not based on the current temperature of the at least one heat absorption device, wherein the heat absorption device comprises a passenger cabin, a battery or a motor;

and the absorption module is used for absorbing the heat of the heat to-be-absorbed device through the heat reservoir of the vehicle aiming at the heat to-be-absorbed device meeting the heat absorption condition so as to judge whether to start the heating function of the heat reservoir when the heating request is detected.

The application also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed implements a method as provided by any of the embodiments of the application.

Based on the same object, the present application also provides a non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method provided by any of the embodiments of the present application.

Based on the same purpose, the application also provides a vehicle, which comprises the vehicle heat control device provided by any embodiment of the application.

As can be seen from the above, the vehicle heat control method provided by the application judges whether the vehicle meets the heat recovery condition or not according to the current speed of the vehicle and the current distance between the vehicle and the destination, further judges whether at least one heat absorber to be heated in the vehicle meets the heat absorption condition according to the current temperature of the at least one heat absorber to be heated in the vehicle under the condition that the heat absorber is met, and absorbs the heat of the heat absorber to be heated through the heat storage device to judge whether the heating function is started when the heating request is detected, thereby realizing heat recovery of at least one of the passenger cabin, the battery and the motor meeting the heat absorption condition.

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 heat of a vehicle according to an embodiment of the present application;

FIG. 2 is a schematic diagram of heat absorption according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a vehicle heat control process according to an embodiment of the present application;

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

fig. 5 is a schematic structural diagram 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.

Before describing the vehicle heat control method provided by the embodiment of the application in detail, the technical problem solved by the method is described. In the prior art, particularly at low temperatures, the battery and passenger compartment of the vehicle need to be heated simultaneously, requiring a large amount of heat. However, after the vehicle is driven to a destination, the temperature of the passenger compartment is relatively high, generally about 24 ℃, and after a long-time stopping state, the temperature gradually decreases, so that the latent heat is not utilized and is wasted. Therefore, the application discovers that the redundant latent heat of the vehicle can be reasonably utilized, thereby saving the energy consumption of the whole vehicle and reducing the energy waste.

Fig. 1 is a flowchart of a vehicle heat control method according to an embodiment of the present application, where the method is applicable to a new energy vehicle, and is particularly applicable to recovering heat of at least one of a passenger compartment, a battery and a motor of the vehicle in real time according to a speed of the vehicle and a distance between the vehicle and a destination during a driving process of the vehicle. The vehicle heat control method provided by the embodiment of the application can be executed by a vehicle heat control device, and the device can be integrated in electronic equipment in a hardware and/or software mode, for example, integrated in a VCU (Vehicle control unit, vehicle controller) of a vehicle. As shown in fig. 1, the method for controlling heat of a vehicle according to the embodiment of the present application may include the following steps:

S110, judging whether the vehicle meets the heat recovery condition or not based on the current speed of the vehicle and the current distance between the vehicle and the destination.

The current vehicle speed can be acquired through a vehicle body sensor, or can be calculated according to the acceleration information acquired at the previous moment and the vehicle speed at the previous moment. The current distance may be a distance between a current location of the vehicle and the destination.

In a specific embodiment, before determining whether the vehicle satisfies the heat recovery condition based on the current vehicle speed of the vehicle and the current distance between the vehicle and the destination, the method further includes: acquiring current navigation information of a vehicle, and determining a destination of the vehicle based on the current navigation information; or, acquiring current navigation information of the vehicle, and sending the current navigation information to the cloud end so that the cloud end determines the destination of the vehicle based on the historical driving information of the vehicle and the current navigation information; and receiving the destination of the vehicle issued by the cloud.

That is, the destination of the vehicle may be acquired from the current navigation information; or, the current navigation information is sent to the cloud end, and then the cloud end determines the destination of the vehicle according to the historical driving information of the vehicle and the current navigation information and feeds back the destination to the vehicle, wherein the historical driving information can comprise the departure place and the corresponding historical destination in each driving process in the historical driving record.

For example, the cloud may first determine a departure point and a destination from the current navigation information, and then obtain each historical destination corresponding to the departure point from the historical driving information, and use a historical destination closest to the destination in the current navigation information in all the historical destinations as a final destination, or determine the final destination by combining the driving frequency of each historical destination and the distance between each historical destination and the destination in the current navigation information.

In the above embodiment, when the vehicle is not connected to the cloud, the destination of the vehicle may be determined directly through the current navigation information, when the vehicle is connected to the cloud, the destination is determined through the cloud in combination with the historical driving information and the current navigation information, so that the destination is determined in combination with the driving habit of the user, for example, the destination in the current navigation information of the user is a company, however, the historical destinations in the historical driving information of the user are all public parking lots near the company, and then the cloud may feed back the public parking lots as the destination to the vehicle.

Further, after the current vehicle speed and the current distance are obtained, it can be judged whether the vehicle satisfies the heat recovery condition. The heat recovery condition can be used for judging whether the vehicle tends to stop or not, so that heat recovery is started under the condition that the vehicle tends to stop, and the influence on the driving experience of a user caused by starting the heat recovery in the normal driving process of the vehicle is avoided.

Illustratively, determining whether the vehicle satisfies the heat recovery condition based on the current vehicle speed of the vehicle and the current distance between the vehicle and the destination may be: if the current speed of the vehicle is less than the preset speed and the current distance between the vehicle and the destination is less than the preset distance, determining that the vehicle meets the heat recovery condition. The preset vehicle speed can be a preset vehicle speed critical value with the parking requirement of the vehicle, such as 10km/h; the preset distance may be a preset distance threshold value, such as 1.5km, for the vehicle to have a parking requirement.

In the embodiment of the application, considering that when the water outlet temperature of the heat reservoir is higher or the environment temperature of the vehicle is lower, the vehicle can not recover heat through the heat reservoir, so that the current environment temperature and the current water outlet temperature of the heat reservoir can be judged, if the vehicle meets the heat recovery condition, the current environment temperature is not lower than the set environment temperature (for example, -18 ℃) and the current water outlet temperature of the heat reservoir is not higher than the set water temperature (for example, 5 ℃), whether each heat absorbing device meets the heat absorbing condition can be further judged.

And S120, if so, judging whether at least one heat absorption device in the vehicle meets the heat absorption condition or not based on the current temperature of the at least one heat absorption device, wherein the heat absorption device comprises a passenger cabin, a battery or a motor.

Specifically, in the case where the vehicle satisfies the heat recovery condition, it may be determined whether or not at least one of the passenger compartment, the battery, and the motor satisfies the heat absorption condition, based on the current temperature of at least one of the passenger compartment, the battery, and the motor.

The purpose of determining whether at least one of the passenger compartment, the battery, and the motor satisfies the heat absorbing condition is to: considering that the temperature of the passenger cabin, the battery and the motor is higher when the vehicle is about to travel to the destination, the waste heat of at least one of the passenger cabin, the battery and the motor can be recovered at the moment, so that the aim of saving energy is fulfilled.

The heat absorption condition can be used for judging whether the heat reservoir can absorb heat from the heat to-be-absorbed device or not, so that heat recovery can be conducted on the heat to-be-absorbed device capable of absorbing heat later. In the embodiment of the application, the heat absorption conditions corresponding to different heat absorption devices can be different or the same, for example, whether the heat absorption conditions are met or not can be judged by the temperature difference between the heat absorption devices and the heat reservoirs.

In one example, determining whether at least one heat sink in a vehicle meets a heat sink condition based on a current temperature of the at least one heat sink includes: when the device to be subjected to heat absorption comprises a passenger cabin, determining a current first temperature difference between the current cabin temperature of the passenger cabin and the current environment temperature, and if the current first temperature difference is larger than a preset first temperature difference, determining that the passenger cabin meets the heat absorption condition; and under the condition that the heat absorption device comprises a battery or a motor, determining a current second temperature difference between the current outlet temperature of the heat absorption device and the current outlet temperature of the heat reservoir, and if the current second temperature difference is larger than a corresponding preset second temperature difference, determining that the heat absorption device meets the heat absorption condition.

That is, if the current first temperature difference between the current cabin interior temperature of the passenger cabin and the current ambient temperature is greater than the preset first temperature difference, it is determined that the passenger cabin satisfies the heat absorption condition. And if the current second temperature difference between the current outlet temperature of the battery or the motor and the current outlet temperature of the heat reservoir is larger than the corresponding preset second temperature difference, determining that the battery or the motor meets the heat absorption condition. The preset first temperature difference, the preset second temperature difference corresponding to the battery, and the preset second temperature difference corresponding to the motor may be the same, for example, all may be 8 ℃.

In the embodiment, the passenger cabin can be judged by combining with the ambient temperature, and the motor and the battery can be judged by combining with the water outlet temperature of the heat reservoir, so that the accuracy of judging whether the heat absorber meets the heat absorption condition or not is ensured, and the situation that the heat reservoir cannot absorb heat is avoided.

S130, aiming at the heat to-be-absorbed device meeting the heat absorbing condition, absorbing heat of the heat to-be-absorbed device through the heat reservoir of the vehicle so as to judge whether to start the heating function of the heat reservoir when the heating request is detected.

Specifically, for the heat absorber to be subjected to heat absorption conditions, heat recovery can be performed on the heat absorber through the heat reservoir. In one example, absorbing heat of a heat sink by a heat reservoir of a vehicle includes: in the case that the heat absorber to be subjected to the heat absorbing condition includes a passenger compartment, controlling a heat pump system of the vehicle to recover heat of the passenger compartment and storing the recovered heat into a heat reservoir; and controlling the heat reservoir to absorb heat of the heat to-be-absorbed device under the condition that the heat to-be-absorbed device meeting the heat absorbing condition comprises a motor or a battery.

That is, for the passenger compartment satisfying the heat absorption condition, the heat of the passenger compartment is recovered by the heat pump system, and the recovered heat is stored in the heat reservoir; for a motor or a battery which meets the heat absorption condition, heat of the motor or the battery is recovered and stored through the heat reservoir.

Fig. 2 is a schematic diagram illustrating heat absorption according to an embodiment of the present application. As shown in fig. 2, since there is a certain distance between the passenger compartment and the installation position of the heat reservoir on the vehicle, the heat of the passenger compartment can be stored in the heat reservoir after being absorbed by the heat pump system, and since the installation position of the battery and the motor on the vehicle is adjacent to the heat reservoir, the heat of the battery and the motor can be directly absorbed by the heat reservoir without being absorbed by the heat pump system. Correspondingly, when the heat reservoir releases heat, the heat of the heat reservoir can be directly released to the battery, and the heat released by the heat reservoir is transferred to the passenger cabin through the heat pump system.

In the above embodiment, the heat pump system and the heat reservoir are used for recovering heat from the passenger cabin, and the heat reservoir is used for recovering heat from the battery or the motor, so that the reliability of recovering waste heat from the passenger cabin, the battery and the motor is ensured.

In the embodiment of the application, when the heat of the heat absorber to be absorbed by the heat reservoir, the heat absorbing capacity of the heat reservoir can be determined in real time, so that the heat absorbing capacity of the heat reservoir is combined to absorb the heat, and the heat recovery is realized by adopting corresponding heat absorbing efficiency under different conditions.

In some embodiments, absorbing heat of a heat sink by a heat reservoir of a vehicle includes: acquiring current heat absorption grade information of the heat reservoir; and adjusting the valve opening of the heat reservoir based on the current heat absorption grade information, and absorbing the heat of the heat to-be-absorbed device through the adjusted heat reservoir.

The current heat absorption level information may be used to describe the required heat absorption capacity, for example, the higher the current heat absorption level information, the stronger the required heat absorption capacity, that is, the higher the required heat absorption efficiency.

Specifically, after the current heat absorption level information is obtained, the valve opening of the heat reservoir can be adjusted according to the current heat absorption level information so as to adjust the heat absorption capacity of the heat absorption device. Through the mode, the heat absorption capacity of the heat reservoir can be adjusted, the heat absorption efficiency of the heat reservoir can be adjusted according to actual conditions, the influence of heat absorption of the heat reservoir on the running experience of a user can be reduced, or the heat absorption speed of the heat reservoir is improved, and energy waste is further avoided.

In a specific embodiment, the current heat absorption level information of the heat reservoir is obtained, including at least one of the following:

Specifically, the preset first calibration table may include each vehicle speed, each distance, and corresponding heat absorption level information. For example, table 1 shows a preset first calibration table in which the heat absorbing capacity described by the heat absorbing grade information gradually increases with increasing distance at the same vehicle speed, and the heat absorbing capacity described by the heat absorbing grade information gradually increases with decreasing vehicle speed at the same distance.

TABLE 1 preset first calibration table

For example, the vehicle speed closest to the current vehicle speed and the distance closest to the current distance may be queried in the preset first calibration table, and then the heat absorption level information corresponding to the vehicle speed and the distance in the preset first calibration table is used as the current heat absorption level information.

By means of the method, the situation that the vehicle is smaller and the distance between the vehicle and the destination is smaller can be achieved, the vehicle is determined to be closer to the parking time, the heat absorbing capacity of the heat storage device is improved at the moment, the heat absorbing efficiency is improved, recovery of all waste heat can be completed before flameout of the vehicle as much as possible, the situation that the vehicle is larger and the distance between the vehicle and the destination is larger is determined to be smaller than the parking time, the heat absorbing capacity can be reduced at the moment, heat is absorbed slowly, and the fact that the user driving experience is influenced due to too fast heat absorption is avoided.

Specifically, for the passenger cabin, the current heat absorption level information can be determined according to the temperature difference between the current temperature of the passenger cabin and the current ambient temperature, and for the battery or the motor, the current heat absorption level information can be determined according to the temperature difference between the current temperature of the battery or the motor and the current water outlet temperature of the heat reservoir. Through the mode, the current heat absorption grade information can be determined according to the temperature difference, and then the heat absorption capacity of the heat reservoir is improved under the condition of large temperature difference, and then the heat absorption efficiency is improved, so that the recovery of all waste heat is completed before flameout of the vehicle as much as possible, the heat is slowly absorbed under the condition of small temperature difference, and the influence of the heat absorption on the driving experience of a user is avoided.

Optionally, determining the current heat absorption level information of the heat reservoir based on a temperature difference between the current temperature of the heat absorption device to be absorbed and the current ambient temperature or the current outlet water temperature of the heat reservoir includes:

inquiring current heat absorption grade information corresponding to the current temperature difference in a preset second calibration table based on the current temperature difference between the current temperature of the heat absorption device and the current environment temperature or the current water outlet temperature of the heat reservoir, wherein the preset second calibration table is used for describing the corresponding relation between each temperature difference and each heat absorption grade information;

Or, based on the current temperature change rate of the heat absorber and the current temperature difference between the current temperature of the heat absorber and the current environment temperature or the current outlet water temperature of the heat reservoir, inquiring the current heat absorption grade information corresponding to the current temperature change rate and the current temperature difference in a preset third calibration table, wherein the preset third calibration table is used for describing the corresponding relation among the temperature differences, the temperature difference change rates and the heat absorption grade information.

That is, the corresponding current heat absorption level information may be queried from the preset second calibration table directly according to the current temperature difference between the current temperature and the current ambient temperature, or the current temperature difference between the current temperature and the current water outlet temperature.

Or, according to the current temperature change rate and the current temperature difference, inquiring corresponding current heat absorption level information in a preset third calibration table. Wherein the current temperature change rate may describe the amount of change in the current temperature over a set interval time. By way of example, table 2 shows a preset third calibration table in which the endothermic capacity described by the endothermic grade information gradually increases with an increase in the temperature difference at the same temperature change rate; at the same temperature difference, as the temperature change rate is expressed as the temperature is gradually decreasing (the temperature difference change rate is a negative value), and the decreasing rate (the absolute value of the temperature difference change rate) is larger and larger, the endothermic capacity described by the endothermic grade information gradually decreases.

TABLE 2 preset third calibration table

For example, the temperature difference closest to the current temperature difference and the temperature change rate closest to the current temperature change rate may be queried in the preset third calibration table, so that the heat absorption level information corresponding to the temperature difference and the temperature change rate in the preset third calibration table is used as the current heat absorption level information. Through the mode, the more the temperature difference is larger, and the more the current temperature is gradually increased and the increasing rate is larger, the more the heat which can be absorbed is determined, the heat absorbing capacity of the heat storage device can be improved at the moment, the heat absorbing efficiency is further improved, more waste heat is recovered as much as possible, the less the temperature difference is, and the less the heat which can be absorbed is determined under the conditions that the current temperature is gradually reduced and the decreasing rate is larger, at the moment, the heat absorbing capacity of the heat storage device can be reduced, and the phenomenon that the user driving experience is influenced by the too fast heat absorption is avoided.

In the embodiment of the application, the current heat absorption grade information can be queried in the preset first calibration table according to the current speed and the current temperature, and the current heat absorption grade information can be queried according to the current temperature difference, so that the minimum value in the current heat absorption grade information is used as the final current heat absorption grade information, the heat absorption capacity of the heat reservoir is determined by integrating a plurality of factors such as the speed, the distance, the temperature difference and the like, and the heat absorption efficiency of the heat reservoir is ensured to be more in accordance with the actual requirement.

Of course, in the process of absorbing heat of the heat to-be-absorbed device meeting the heat absorbing condition, whether the heat to-be-absorbed device meets the heat absorbing condition or not can be continuously judged, and if not, the heat absorption of the heat to-be-absorbed device is stopped. In the embodiment of the application, after the heat of the heat absorber to be absorbed and meeting the heat absorption condition is absorbed by the heat reservoir, the heating can be realized by releasing the heat from the heat reservoir when the vehicle has a heating requirement, for example, whether the heating function of the heat reservoir is started is judged when the heating request is detected, and if so, the heating is realized by releasing the heat from the heat reservoir.

Optionally, the method provided by the embodiment of the application further includes: in response to detecting a heating request of at least one device to be heated, judging whether the at least one device to be heated meets a heating condition or not based on the current outlet water temperature of the heat reservoir, wherein the device to be heated comprises a passenger cabin or a battery; and starting the heating function of the heat reservoir aiming at the device to be heated which meets the heating condition so as to heat the device to be heated through the heat reservoir.

The heating request of the device to be heated may be determined according to the current temperature of the device to be heated, for example, when the vehicle is in a ready state or a charging state, whether the current temperature of the device to be heated is lower than a corresponding set temperature may be determined, and if so, the heating request of the device to be heated may be generated. For example, if the minimum value of the current temperature of each electric core in the battery is lower than 0 ℃, generating a heating request for the battery; alternatively, the current temperature of the passenger compartment is less than 8 ℃, a heating request for the passenger compartment is generated.

Specifically, if a heating request exists, judging whether the device to be heated meets the heating condition according to the current outlet water temperature of the heat reservoir. Wherein the heating conditions may be used to determine whether the device to be heated is capable of being heated by the heat reservoir.

In one example, determining whether the at least one device to be heated satisfies a heating condition based on a current outlet water temperature of the heat reservoir includes: under the condition that a heating request of the passenger cabin is detected, determining a current third temperature difference between the current water outlet temperature of the heat reservoir and the current environment temperature, and if the current third temperature difference is larger than a preset third temperature difference, determining that the passenger cabin meets a heating condition; under the condition that the heating request of the battery is detected, determining a current fourth temperature difference between the current water outlet temperature of the heat reservoir and the current cell temperature of the battery, and if the current fourth temperature difference is larger than a preset fourth temperature difference, determining that the battery meets the heating condition.

That is, for the passenger compartment, it may be determined that the passenger compartment satisfies the heating condition in a case where the current third temperature difference between the current outlet water temperature and the current ambient temperature is greater than the preset third temperature difference; aiming at the battery, the passenger cabin can be determined to meet the heating condition under the condition that the current fourth temperature difference between the current water outlet temperature and the current battery core temperature of the battery is larger than the preset fourth temperature difference. The current cell temperature may be the minimum value of the current temperatures of all the cells; the preset third temperature difference may be 8 ℃ and the preset fourth temperature difference may be 5 ℃.

Through the above example, it can be determined that the heat reservoir can heat the passenger cabin under the condition that the temperature difference between the current water outlet temperature and the current environment temperature is large, and the heat reservoir can heat the battery under the condition that the temperature difference between the current water outlet temperature and the current battery cell temperature is large, so that the condition that the heating efficiency is too slow or the heating cannot be performed due to the fact that the heat reservoir is adopted under the condition that the temperature difference is small is avoided.

Specifically, if the device to be heated satisfies the heating condition, the device to be heated that satisfies the heating condition may be heated by the heat reservoir, and for the device to be heated that does not satisfy the heating condition, the device to be heated may be heated by a thermal management device of the vehicle. By the mode, heat recovered in the heat reservoir can be utilized to heat the battery or the passenger cabin, so that energy consumption is greatly saved, and the cruising ability of the vehicle is improved.

In this embodiment, in order to further save energy consumption, considering that the motor of the vehicle is generally adjacent to the installation position of the motor and the temperature of the motor is higher during the running of the vehicle, the battery may also be heated by the motor with higher temperature, so as to avoid consuming the heat stored in the heat reservoir.

In one example, before determining whether the at least one device to be heated satisfies the heating condition based on the current outlet water temperature of the heat reservoir, further comprising: and under the condition that the heating request of the battery is detected, if the current temperature of the motor is lower than a preset temperature threshold value, executing the operation of judging whether the at least one device to be heated meets the heating condition or not based on the current water outlet temperature of the heat reservoir, and otherwise, heating the battery through the motor.

That is, if there is a heating demand for the battery, it may be determined whether the current temperature of the motor is lower than a preset temperature threshold, if yes, it may be further determined whether the device to be heated satisfies a heating condition to heat the battery through the heat reservoir, if no, it may be determined that the device to be heated is capable of heating the battery, and if not, it is not necessary to further determine whether the device to be heated satisfies the heating condition, and the device to be heated is directly heated for the battery through the motor. By the example, the heat of the motor in the running process of the vehicle can be further utilized, and the cruising ability of the vehicle is further improved.

In this embodiment, considering that the battery needs to reach a certain temperature quickly when the vehicle starts to operate, the heating priority may be set for the battery and the passenger compartment, so that the battery is heated preferentially when the heating requirements of the battery and the passenger compartment exist, and the passenger compartment is heated after the heating of the battery is completed.

In a specific embodiment, heating the device to be heated by the heat reservoir comprises: under the condition that the passenger cabin meets the heating condition and the battery meets the heating condition, heating the battery through the heat reservoir; and after the battery is heated, the current water outlet temperature of the heat reservoir is obtained again, whether the heat reservoir meets the heating condition is judged based on the new current water outlet temperature, and if yes, the passenger cabin is heated through the heat reservoir.

That is, if the heating request of the passenger compartment and the heating request of the battery are detected, the battery can be heated by the heat reservoir first, after the battery is heated, whether the passenger compartment meets the heating condition is judged again according to the newly obtained current water outlet temperature of the heat reservoir, and if the passenger compartment meets the heating condition, the passenger compartment is continuously heated by the heat reservoir. In the embodiment, the heat reservoir heats the battery before heating the passenger cabin, so that the battery can be heated to a certain temperature preferentially, and the vehicle can be started quickly.

Of course, in the process of heating the device to be heated which meets the heating condition, whether the device to be heated meets the heating cut-off condition can be judged in real time, and if yes, the heating of the device to be heated is stopped. The method comprises the steps that when the current temperature difference between the current water outlet temperature of the heat reservoir and the current battery core temperature of the battery is smaller than a preset fifth temperature difference, the battery is determined to meet a heating cut-off condition, or when the current battery core temperature is higher than the preset battery core temperature, the battery is determined to meet the heating cut-off condition; the passenger compartment can be determined to meet the heating cutoff condition when the current temperature difference between the current outlet water temperature of the heat reservoir and the current ambient temperature is less than a preset sixth temperature difference.

Fig. 3 is a schematic diagram of a vehicle heat control process according to an embodiment of the present application. As shown in fig. 3, the complete vehicle VCU may determine the state of the vehicle. In the case of the ready state, it is possible to judge whether the distance from the destination is 1.5km or less and the vehicle speed is 10km/h or less, if not, it is not started the endothermic function, if yes, it is further judged whether the ambient temperature of-18 ℃ or less is satisfied, the heat reservoir outlet water temperature is 5 ℃ or less, if not, it is returned to continue the judgment of the vehicle state, if yes, the heat reservoir recovery heat function is executed in the case of the passenger compartment temperature-ambient temperature is 8 ℃ or less, and if the bridge outlet temperature-heat reservoir temperature is >8 ℃, or the battery outlet temperature-heat reservoir temperature is >8 ℃, the heat reservoir recovery heat function is executed. In the process of executing the heat recovery function of the heat reservoir, whether the outlet temperature of the bridge is lower than or equal to 8 ℃ or not, or the outlet temperature of the battery is lower than or equal to 8 ℃ or not can be continuously detected, if yes, the heat recovery can be stopped, and if not, the heat recovery can be continuously carried out.

In addition, under the condition of the preparation state, if the distance of the destination is not more than or equal to 1.5km and the vehicle speed is less than or equal to 10km/h, whether the battery has a heating request or not can be judged, if not, whether the passenger cabin has the heating request or not can be continuously judged, if the passenger cabin has the heating request, whether the water outlet temperature-environment temperature of the heat reservoir is more than 8 ℃ or not can be judged, if so, the heat pump recovers the energy of the heat reservoir, namely the heat reservoir releases heat, and if not, the heating is stopped.

Referring to fig. 3, in the case of the charged state, it may be determined whether the lowest temperature of the battery cell is less than or equal to 0 ℃, if yes, it may be determined that the battery has a heating request, and further, it may be determined whether the outlet water temperature of the heat reservoir-the battery pack cell is greater than 5 ℃, if not, it is heated by a heat pump or PCT (Positive Temperature Coefficient ) device, if not, the heat reservoir heating battery pack function is activated, and during the heating process, it may be further detected whether the outlet water temperature of the heat reservoir-the battery pack cell is less than or equal to 5 ℃, or the lowest temperature of the battery cell is greater than 5 ℃, if yes, it is stopped.

According to the vehicle heat control method provided by the application, whether the vehicle meets the heat recovery condition or not is judged through the current speed of the vehicle and the current distance between the vehicle and the destination, and further under the condition that the heat recovery condition is met, whether at least one heat absorption device meets the heat absorption condition or not is judged according to the current temperature of at least one heat absorption device in the vehicle, the heat of the heat absorption device to be absorbed through the heat storage device is judged to be started when the heating request is detected aiming at the heat absorption device to be absorbed by the heat absorption device to judge whether the heating function of the heat storage device is started or not, and the heat recovery of at least one of a passenger cabin, a battery and a motor meeting the heat absorption condition is realized.

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 application also provides a vehicle heat control device corresponding to the method of any embodiment.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a vehicle heat control device according to an embodiment of the present application, where the vehicle heat control device includes a first determining module 410, a second determining module 420, and an absorbing module 430.

A first judging module 410 for judging whether the vehicle satisfies a heat recovery condition based on a current vehicle speed of the vehicle and a current distance between the vehicle and a destination;

a second judging module 420, configured to judge whether at least one heat absorption device in the vehicle meets a heat absorption condition based on a current temperature of the at least one heat absorption device if yes, where the heat absorption device includes a passenger cabin, a battery, or a motor;

the absorbing module 430 is configured to absorb, by the heat reservoir of the vehicle, heat of the heat to-be-absorbed device for the heat to-be-absorbed device that satisfies the heat absorbing condition, so as to determine whether to turn on a heating function of the heat reservoir when a heating request is detected.

Optionally, the first determining module 410 is further configured to obtain current navigation information of the vehicle, and determine a destination of the vehicle based on the current navigation information; or, acquiring current navigation information of the vehicle, and sending the current navigation information to a cloud end so that the cloud end determines a destination of the vehicle based on the historical driving information of the vehicle and the current navigation information; and receiving the destination of the vehicle issued by the cloud.

Optionally, the second determining module 420 is specifically configured to:

Optionally, the absorbing module 430 includes a level determining unit and a valve adjusting unit, where:

the grade determining unit is used for acquiring the current heat absorption grade information of the heat reservoir;

and the valve adjusting unit is used for adjusting the valve opening of the heat reservoir based on the current heat absorption grade information, and absorbing the heat of the heat to-be-absorbed device through the adjusted heat reservoir.

Optionally, the level determining unit is further configured to perform at least one of the following:

Optionally, the level determining unit is further configured to query, in a preset second calibration table, current heat absorption level information corresponding to the current temperature difference, based on a current temperature difference between the current temperature of the heat absorption device to be absorbed and the current ambient temperature or the current outlet water temperature of the heat reservoir, where the preset second calibration table is used to describe a corresponding relationship between each temperature difference and each heat absorption level information; or, based on the current temperature change rate of the heat absorption device to be absorbed and the current temperature difference between the current temperature of the heat absorption device to be absorbed and the current environment temperature or the current water outlet temperature of the heat reservoir, inquiring current heat absorption grade information corresponding to the current temperature change rate and the current temperature difference in a preset third calibration table, wherein the preset third calibration table is used for describing the corresponding relation among each temperature difference, each temperature difference change rate and each heat absorption grade information.

Optionally, the absorption module 430 is further configured to, in a case where the device to be heat-absorbed that satisfies the heat-absorbing condition includes a passenger compartment, control a heat pump system of the vehicle to recover heat of the passenger compartment, and store the recovered heat in the heat reservoir; and controlling the heat reservoir to absorb the heat of the heat to-be-absorbed device under the condition that the heat to-be-absorbed device meeting the heat absorbing condition is a motor or a battery.

Optionally, the device further comprises a heat release module, wherein the heat release module is used for judging whether the at least one device to be heated meets a heating condition or not based on the current outlet water temperature of the heat reservoir in response to detecting a heating request of the at least one device to be heated, and the device to be heated comprises a passenger cabin or a battery; and starting the heating function of the heat reservoir aiming at the device to be heated which meets the heating condition so as to heat the device to be heated through the heat reservoir.

Optionally, the heat release module is further configured to determine, when a heating request of the passenger cabin is detected, a current third temperature difference between a current outlet water temperature of the heat reservoir and a current ambient temperature, and if the current third temperature difference is greater than a preset third temperature difference, determine that the passenger cabin meets a heating condition; under the condition that the heating request of the battery is detected, determining a current fourth temperature difference between the current water outlet temperature of the heat reservoir and the current cell temperature of the battery, and if the current fourth temperature difference is larger than a preset fourth temperature difference, determining that the battery meets the heating condition.

Optionally, the heat release module is further configured to, when detecting a heating request of the battery, perform an operation of determining whether the at least one device to be heated meets a heating condition based on a current outlet water temperature of the heat reservoir if the current temperature of the motor is lower than a preset temperature threshold, and otherwise, heat the battery through the motor.

Optionally, the heat release module is further configured to heat the battery through the heat reservoir when it is determined that the passenger compartment meets a heating condition and the battery meets the heating condition; and after the battery is heated, the current water outlet temperature of the heat reservoir is obtained again, whether the passenger cabin meets the heating condition is judged based on the new current water outlet temperature, and if yes, the passenger cabin is heated through the heat reservoir.

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 heat 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 method for controlling the heat of the vehicle according to any embodiment when executing the program.

Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and fig. 5 shows a more specific hardware structure of the electronic device according to the present 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 vehicle heat 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 a vehicle corresponding to the method of any embodiment, wherein the vehicle comprises the vehicle heat control device according to any embodiment.

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 perform the vehicle heat control method according to any of the above embodiments, corresponding to 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 vehicle heat control method 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 vehicle heat control method, characterized by comprising:

2. The method of claim 1, wherein determining whether at least one heat sink satisfies a heat sink condition based on a current temperature of the at least one heat sink in the vehicle comprises:

3. The method of claim 1, wherein the absorbing heat of the heat sink by the vehicle's heat reservoir comprises:

acquiring current heat absorption grade information of the heat reservoir;

4. The method of claim 3, wherein the obtaining current heat absorption level information of the heat reservoir comprises at least one of:

5. The method of claim 4, wherein the determining the current heat absorption level information of the heat reservoir based on a temperature difference between the current temperature of the heat absorption device and a current ambient temperature or a current outlet water temperature of the heat reservoir comprises:

6. The method according to claim 1, wherein the method further comprises:

7. The method of claim 6, wherein determining whether the at least one device to be heated satisfies a heating condition based on a current outlet water temperature of the heat reservoir comprises:

8. The method of claim 6, further comprising, prior to said determining whether the at least one device to be heated meets a heating condition based on a current outlet water temperature of the heat reservoir:

9. A vehicle heat control apparatus, characterized by comprising:

10. A vehicle characterized in that it comprises the vehicle heat control apparatus according to claim 9.