CN113895315A

CN113895315A - Vehicle heating control method, system, device, equipment and storage medium

Info

Publication number: CN113895315A
Application number: CN202111155466.5A
Authority: CN
Inventors: 张巍
Original assignee: Beijing Co Wheels Technology Co Ltd
Current assignee: Beijing Co Wheels Technology Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-07
Anticipated expiration: 2041-09-29
Also published as: CN113895315B

Abstract

The embodiment of the application provides a vehicle heating control method, a vehicle heating control system, a vehicle heating control device, vehicle heating control equipment and a storage medium. In the embodiment of the application, the current working condition of the vehicle can be determined according to the using state of the vehicle, and the heating priority of the power battery and the cab corresponding to the vehicle under the current working condition can be determined based on the heating optimal sequence of the power battery and the cab under each working condition; furthermore, heat required by meeting the heating priority can be provided for the power battery and the cockpit according to the heating priority of the power battery and the cockpit, so that the heat can be reasonably distributed for the power battery and the cockpit.

Description

Vehicle heating control method, system, device, equipment and storage medium

Technical Field

The present application relates to the field of electric vehicle technologies, and in particular, to a method, a system, an apparatus, a device, and a storage medium for controlling vehicle heating.

Background

In the use scene of the electric automobile, the power battery is used as a power source of the electric automobile, and the use performance of the power battery plays an important role in the driving state of the electric automobile. Since the charging and discharging capacity of the battery is affected by the temperature, the charging and discharging capacity of the power battery is reduced when the temperature of the power battery is lower than the proper temperature range. Therefore, the power battery needs to be heated to raise the temperature of the power battery, so as to ensure the charging and discharging capacity of the power battery.

In addition, the heating condition can also exist in the cockpit regulation of the electric automobile, the condition that the heating requirements exist in both the power battery and the cockpit, how to reasonably distribute the heat required by the power battery and the cockpit respectively is the basis for ensuring the comfort of the cockpit and the service performance of the power battery.

Disclosure of Invention

Aspects of the application provide a vehicle heating control method, system, device, equipment and storage medium, which are used for reasonably distributing heat required by a power battery and a cockpit respectively, and ensuring the service performance of the power battery and the comfort of the cockpit.

The embodiment of the application provides a vehicle heating control method, which comprises the following steps: determining the current working condition of the vehicle according to the using state of the vehicle; determining the heating priority of a power battery and a cab in the vehicle according to the current working condition; and providing heat required by heating for the power battery and the cockpit according to the heating priority.

In an optional embodiment, determining the current operating condition of the vehicle according to the using state of the vehicle comprises: identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or acquiring a vehicle starting state from a driving system, and determining whether the current working condition of the vehicle is a running working condition.

In an alternative embodiment, determining a heating priority of a power battery and a cockpit in the vehicle based on the current operating condition includes: acquiring a predefined priority sequence of the power battery and the cockpit under each working condition; and determining the heating priority of the power battery and the cab of the vehicle under the current working condition.

In an alternative embodiment, providing the heat required for heating the power battery and the cockpit according to the heating priority comprises: determining the target opening degree of a three-way valve in a heating loop according to the heating priority; and controlling and adjusting the three-way valve to adjust the target opening degree, and providing heat required by heating for the power battery and the cockpit.

In an alternative embodiment, determining a target opening degree of a three-way valve in the heating circuit according to the heating priority includes: acquiring the cell temperature difference of the power battery as a first temperature; collecting the temperature of the battery loop as a second temperature; if the heating priorities of the power battery and the cockpit are the same, determining the target opening degree of a three-way valve in a heating loop according to the first temperature and the second temperature; if the heating priorities of the power battery and the cockpit are different, acquiring the temperature of the heating loop as a third temperature; and determining the target opening degree of a three-way valve in the heating circuit according to the first temperature, the second temperature and the third temperature.

In an alternative embodiment, determining a target opening degree of a three-way valve in a heating circuit based on the first temperature and the second temperature includes: acquiring a first corresponding relation between a predefined electric core temperature difference range and the opening degree of a three-way valve; determining a target cell temperature difference range corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the target temperature difference range of the electric core as a first opening; predefining a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve; determining a target temperature range corresponding to the second temperature from the second corresponding relation; taking the opening corresponding to the target temperature range as a second opening; and selecting the minimum opening degree value from the first opening degree and the second opening degree as a target opening degree of a three-way valve in the heating circuit.

In an alternative embodiment, determining a target opening degree of a three-way valve in a heating circuit according to the first temperature, the second temperature and the third temperature includes: determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening degree of the three-way valve according to the heating priority; determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third correspondence; setting the opening degree corresponding to the target temperature range of the battery circuit and the target temperature range of the heating circuit as a third opening degree; selecting a target opening degree of a three-way valve in the heating circuit, which is the smallest opening degree value, from among the first opening degree, the second opening degree, and the third opening degree.

An embodiment of the present application further provides a vehicle control system, which includes: the heating circuit is used for providing heat required by heating for the power battery and the cockpit; the vehicle control unit is used for realizing the steps in the method and controlling the heating loop to provide heat required by heating for the power battery and the cockpit.

In an optional embodiment, the vehicle control system further comprises a refrigeration circuit for providing refrigerant required for refrigeration to the power battery and the cockpit.

The embodiment of the present application further provides a vehicle heating control device, including: the first determining module is used for determining the current working condition of the vehicle according to the using state of the vehicle; the second determination module is used for determining the heating priority of a power battery and a cab in the vehicle according to the current working condition; and the heating module is used for providing heat required by heating for the power battery and the cockpit according to the heating priority.

The embodiment of the present application further provides an on-board device, including: a memory and a processor; the memory to store one or more computer instructions; the processor is configured to execute the one or more computer instructions to implement the steps of the method.

The embodiment of the present application further provides a computer-readable storage medium storing a computer program, which, when executed, implements the steps in the method.

In the embodiment of the application, the current working condition of the vehicle can be determined according to the using state of the vehicle, and further, the heating priority of a power battery and a cab in the vehicle can be determined according to the current working condition of the vehicle; and furthermore, the required heat provided for the power battery and the cockpit is determined according to the heating priority of the power battery and the cockpit, so that the heat is reasonably distributed to the power battery and the cockpit.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

FIG. 2 is a schematic structural diagram of a vehicle control system according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of an on-board device according to an embodiment of the present disclosure;

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The charging and discharging capacity of the power battery as a power source in the electric automobile affects the functions of many vehicle components in the electric automobile, and it is important for the power battery to exert the optimal charging and discharging capacity in order to ensure the normal operation of each vehicle component in the electric automobile. Because the charging and discharging capacity of the power battery is reduced under the condition of high temperature or low temperature, the key for ensuring the power battery to exert the optimal charging and discharging capacity is to keep the temperature of the power battery in a proper range. Generally, an energy management system is included in an electric vehicle, and is used for dynamically adjusting the temperature of a power battery so as to cool the power battery when the temperature of the power battery is higher than an appropriate temperature range; and heating the power battery when the temperature of the power battery is lower than the proper temperature range, so that the temperature of the power battery is kept in the proper temperature range, and the optimal charging and discharging capacity is exerted.

In addition, in the electric vehicle, the cabin also has a heating demand or a cooling demand, and the air conditioner can output cold air or hot air to the cabin according to the demand of a user. In the case of a cockpit having a cooling or heating requirement, the vehicle control system may provide it with a refrigerant required for cooling or with heat required for heating to achieve the cooling or heating requirement.

In the embodiment of the application, the condition that the power battery in the electric automobile needs to be heated and the cockpit needs to be heated is called that the electric automobile has a heating requirement, and the condition that the power battery in the electric automobile needs to be cooled and the cockpit needs to be cooled is called that the electric automobile has a cooling requirement. For electric vehicles, it sometimes happens that the power battery and the cockpit have both heating requirements or both cooling requirements. Taking the heating requirements of both the power battery and the cockpit as an example, how to reasonably distribute the heat required by the power battery and the cockpit under the condition that the heat provided by the electric automobile is certain is the basis for ensuring the service performance of the power battery and the comfort of the cockpit.

Based on the situation that the power battery and the cockpit have heating requirements, the embodiment of the application provides a vehicle heating control method, and the method is suitable for a whole vehicle controller of an electric vehicle to reasonably distribute heat required by the power battery and the cockpit respectively.

Fig. 1 is a flowchart of a vehicle heating control method provided in an embodiment of the present application, and as shown in fig. 1, the method includes:

s1, determining the current working condition of the vehicle according to the using state of the vehicle;

s2, determining the heating priority of a power battery and a cab in the vehicle according to the current working condition;

and S3, providing heat required by heating for the power battery and the cockpit according to the heating priority.

In this application embodiment, the current operating condition of the electric vehicle refers to a current state of the electric vehicle in the using process, and in this application embodiment, the manner of determining the current operating condition of the electric vehicle is not limited. In an alternative embodiment, the current operating condition of the electric vehicle may be determined according to the charging mode of the electric vehicle or the vehicle starting state. For example, whether the current working condition of the electric automobile is the charging working condition is determined by identifying the charging mode corresponding to the charging port of the electric automobile; or acquiring a vehicle starting state from the driving system, and determining whether the current working condition of the electric vehicle is a running working condition.

For example, if it is acquired that the charging mode corresponding to the charging port of the electric vehicle is any one of an alternating current slow charging mode 8A, an alternating current slow charging mode 13A, an alternating current slow charging mode 32A or a direct current charging mode, it is determined that the current working condition of the electric vehicle is the charging working condition corresponding to the current charging mode. If the charging mode corresponding to the charging port of the electric automobile is collected to be a non-external charging mode, determining that the electric automobile is not charged currently, acquiring a vehicle starting state from a driving system of the electric automobile, and determining whether the vehicle starting state is a ready state (ready state); if so, determining the current working condition of the electric automobile as a driving working condition; the vehicle starting state is a ready state, which means that the electric vehicle is ready to run.

In another optional embodiment, the current working condition of the electric automobile can be determined according to the working state of vehicle components in the electric automobile; for example, for the range-extended electric automobile, the current working condition of the electric automobile can be divided into the working condition of the range extender and the working condition of the range extender not working according to the working state of the range extender.

In another optional embodiment, the current working condition of the electric automobile can be determined according to the energy demand state of vehicle components in the electric automobile; for example, the power battery and/or the cab currently have heating requirements, and the current working condition of the electric vehicle can be called as a heating working condition; for another example, the power battery and/or the cab currently have a cooling requirement, and the current operating condition of the electric vehicle may be referred to as a cooling operating condition.

In another optional embodiment, the energy management system may provide different energy management modes for the power battery based on the heating requirements or the cooling requirements corresponding to the power battery at different temperatures, and based on this, the current operating condition of the electric vehicle may also be determined from the perspective of the energy management modes. For example, when the temperature of the power battery is in the range of 20 ℃ to 35 ℃, the charge and discharge capacity and the service life of the power battery are optimal, and the power battery does not need to be heated or refrigerated; alternatively, the working condition that the temperature of the power battery is in the temperature range of 20-35 ℃ can be called a heating-free/cooling working condition.

For another example, when the temperature of the power battery is in the range of-10 ℃ to 20 ℃, although the service life of the power battery is not affected, the charging and discharging capacity of the power battery is poor, and the degree of heating of the power battery is light; alternatively, the working condition that the temperature of the power battery is in the temperature range of-10 ℃ to 20 ℃ can be called as a weak heating working condition. For another example, when the temperature of the power battery is within the range of 35 ℃ to 45 ℃, the charging and discharging capacity and the service life of the power battery are slightly influenced, and the degree of refrigeration required by the power battery is relatively low; alternatively, the working condition that the temperature of the power battery is within the temperature range of 35-45 ℃ can be called as a weak refrigeration working condition.

For another example, when the temperature of the power battery is in the range of-30 ℃ to-10 ℃, although the service life of the power battery is not affected, the charging and discharging capacity of the power battery is poor, overcharging is easily caused, and the power battery needs to be heated to a relatively strong degree; alternatively, the working condition corresponding to the temperature of the power battery in the temperature range of-30 ℃ to-10 ℃ can be called a forced heating working condition. For example, when the temperature of the power battery is in the range of 45 ℃ to 55 ℃, the service life of the power battery is shortened, the charging and discharging capacity is poor, the electric automobile is prone to limping, and the degree of refrigeration required by the power battery is strong; alternatively, the working condition that the temperature of the power battery is within the temperature range of 45 ℃ to 55 ℃ can be called as a forced cooling working condition.

In another optional embodiment, the current operating condition of the electric vehicle may also be determined according to a State of Charge (SOC) of the power battery, that is, a remaining power amount, and optionally, the SOC range of the electric vehicle may be divided according to a driving range capability of the electric vehicle. For example, the division is made according to SOC < 20% and 20% ≦ SOC; the SOC less than 20% represents that the driving range capacity of the electric automobile is low, the working condition corresponding to the SOC range can be called a low-energy working condition, the SOC more than or equal to 20% represents that the driving range capacity of the electric automobile is normal, and the working condition corresponding to the SOC range can be called a normal working condition.

It should be noted that the above-mentioned operating conditions of the electric vehicle are only exemplary, and are not limited thereto. In addition, various working conditions of the electric automobile do not exist independently, and the electric automobile can have various working conditions at the same time within the same time range. For example, the electric vehicle may have a heating condition or a cooling condition at the same time under a charging condition or a driving condition.

In the embodiment of the application, the vehicle performance of the electric vehicle can be divided into power performance, energy management performance, cockpit comfort performance, economy performance and power battery service performance in terms of power performance, energy management, cockpit comfort performance, economy performance, charge and discharge capacity and the like of the electric vehicle. It should be noted that these vehicle performances are not all involved, and the electric vehicle may be in different working conditions, and the involved vehicle performances may be different, one or more. Further, for the same vehicle performance, the electric vehicle may have different requirements for the vehicle performance under different operating conditions.

For example, under the charging condition of the electric vehicle, the number of vehicle components in the electric vehicle in the working state is relatively small, and since the charging and discharging capacity of the power battery is obviously affected by the temperature, in order to ensure the charging effect of the power battery, the energy management performance can be determined as the vehicle performance with the highest priority. For another example, in a driving condition of an electric vehicle, the dynamic performance is decisive for other vehicle performances, and therefore, the dynamic performance can be regarded as the vehicle performance with the highest priority.

Alternatively, assuming that the external environment temperature is high under the charging condition, which may affect the temperature of the power battery to be higher than the suitable temperature range, the power battery has a cooling requirement under the condition; in order to ensure comfort in the cockpit in a high temperature environment, the cockpit also has a refrigeration requirement. However, the power battery directly affects the charge and discharge capacity at high temperature, which may affect the functions of other vehicle components, and therefore, the refrigeration requirement of the power battery should be preferentially ensured compared with the refrigeration requirement of the cockpit, i.e. the refrigeration priority of the power battery is higher than that of the cockpit.

Alternatively, under the driving condition, if the current temperature of the power battery is the suitable temperature for the power battery to work or the external temperature has little influence on the service performance of the power battery, but the temperature in the cab is higher for the user. In this case, the power battery does not have a refrigeration requirement, but the cabin has a refrigeration requirement in order to ensure comfort in the cabin in a high-temperature environment, and therefore, the refrigeration requirement of the cabin should be preferentially ensured compared with the refrigeration requirement of the power battery, that is, the refrigeration priority of the cabin is higher than that of the power battery.

Based on the above, in the embodiment of the application, priorities among vehicle performances under various working conditions can be predefined for different working conditions of the electric vehicle, and then, under the condition of determining the current working condition of the electric vehicle, the priorities of the vehicle performances of the electric vehicle under the current working condition can be determined by combining the predefined priorities of the vehicle performances of the electric vehicle under the various working conditions, so as to determine the heating priorities of the power battery and the cab.

In the embodiment, the vehicle control system can respectively provide the heat required by heating for the power battery and/or the cockpit according to the heating requirement of the power battery and/or the cockpit. The vehicle control system comprises a heating loop, the heating loop is connected with a battery loop where the power battery is located through a three-way valve, and the heating loop can provide heat with different proportions to the battery loop by changing the opening degree of the three-way valve.

Based on the method, the opening degree of the three-way valve matched with the power battery can be predefined under different heating requirements according to the power battery, the target opening degree of the three-way valve in the heating loop is determined according to the heating priorities of the power battery and the cockpit, and the three-way valve is controlled to be adjusted to the target opening degree, so that the heating loop can provide heat required by heating for the power battery and the cockpit according to the heating priorities of the power battery and the cockpit.

When the power battery is used, the temperature difference between the battery cores of the power battery in normal work cannot be too large, if large temperature difference exists between the battery cores, the temperature of individual battery cores in the power battery is too high or too low, the power battery needs to be cooled or heated, and the temperature difference between the battery cores of the power battery reflects the heating requirement of the power battery to a certain extent. Optionally, a corresponding relationship between the opening degree of the three-way valve in the heating loop and the cell temperature difference range t1 of the power battery shown in table 1 may be predefined according to the cell temperature difference of the power battery under different heating requirements; wherein, the larger the opening value of the three-way valve is, the more heat the heating loop provides to the battery loop is represented. Further, according to the acquired cell temperature difference of the power battery, a first opening corresponding to the three-way valve in the heating loop can be determined from table 1.

TABLE 1

Cell temperature difference t1	Three-way valve opening
		t1≤3℃	100％
3℃<t1≤5℃	80％
		5℃<t1≤7℃	55％
7℃<t1≤9℃	30％
		9℃<t1≤11℃	20％
11℃<t1	0％

In addition, the temperature of the battery loop in which the power battery is located may also affect whether the power battery has a heating requirement. For example, the current temperature of the power battery is in the appropriate temperature range, but the temperature of the battery loop is lower than the appropriate temperature range of the power battery, and if the temperature of the battery loop is not adjusted, the temperature of the power battery gradually decreases and is finally lower than the appropriate temperature range of the power battery, in this case, it can be determined that the power battery has the heating requirement.

Alternatively, the correspondence between the opening degree of the three-way valve in the heating circuit and the battery circuit temperature range t2 shown in table 2 may be predefined according to the temperature of the battery circuit of the power battery under the heating requirement; wherein, the larger the opening value of the three-way valve is, the more heat the heating loop provides to the battery loop is represented. Further, according to the collected temperature of the battery loop, a second opening degree corresponding to the three-way valve in the heating loop can be determined.

TABLE 2

Battery loop temperature t2	Three-way valve opening
		t2≤20℃	100％
20℃<t2≤48℃	100％
		48℃<t2≤50℃	80％
51℃<t2≤53℃	55％
		53℃<t2	30％

Further optionally, when the target opening degree of the three-way valve in the heating loop is determined, the cell temperature difference of the power battery and the temperature of the battery loop where the power battery is located may be collected as the first temperature and the second temperature. Further, the target opening K of the three-way valve in the heating loop can be determined by combining the heating priorities of the power battery and the cockpit.

In an alternative embodiment, in the case that the heat quantity provided by the electric vehicle is enough to meet the heating requirements of the power battery and the cockpit, the heating priorities of the power battery and the cockpit are considered to be the same, and at this time, the opening degree of the three-way valve corresponding to the heating priority of the power battery can be directly determined according to the heating requirement of the power battery. Optionally, a cell target temperature difference range where the first temperature is located may be determined from table 1, and an opening degree of the three-way valve corresponding to the cell target temperature difference range is taken as the first opening degree k 1; and determining a target temperature range of the battery circuit in which the second temperature is located from table 2, and setting the opening degree of the three-way valve corresponding to the target temperature range of the battery circuit as the second opening degree k 2. Further, in order to satisfy the heating demand of the power battery in both the cell temperature difference and the battery circuit temperature, the opening degree K with the smallest value may be selected as the target opening degree K of the three-way valve in the heating circuit from the first opening degree K1 and the second opening degree K2.

In a heating demand scene of the power battery, the heating loop can provide heat required for heating the cockpit, and the temperature of the heating loop can also affect the heating demand of the power battery. Based on this, in the embodiment of the present application, the corresponding relationship between the temperature range of the battery circuit, the temperature range of the thermal circuit, and the opening degree of the three-way valve as shown in tables 3 and 4 may be defined according to the influence relationship between the different temperature ranges of the battery circuit and the different temperature ranges of the heating circuit on the power battery and the heating requirement of the cab.

Alternatively, in the case where the heating priority of the cockpit is higher than that of the power battery, the correspondence between the temperature range of the battery circuit, the temperature range of the thermal circuit, and the opening degree of the three-way valve is shown in table 3; the temperature t2 of the battery loop is constant, and the opening degree of the three-way valve is larger when the temperature t3 of the heating loop is higher; the temperature t3 of the heating loop is constant, and the opening degree of the three-way valve is larger when the temperature t2 of the battery loop is higher; for example, if the temperature t2 of the battery circuit is 15 ℃ and the temperature t3 of the heating circuit is 65 ℃, the opening degree of the three-way valve is 7.5%. When the heating priority of the power battery is higher than that of the cockpit, the correspondence between the temperature range of the battery circuit, the temperature range of the thermal circuit and the opening degree of the three-way valve is shown in table 4; the temperature t2 of the battery loop is constant, and the opening degree of the three-way valve is larger when the temperature t3 of the heating loop is higher; the temperature t3 of the heating loop is constant, and the opening degree of the three-way valve is smaller when the temperature t2 of the battery loop is higher; for example, if the temperature t2 of the battery circuit is 30 ℃ and the temperature t3 of the heating circuit is 70 ℃, the opening degree of the three-way valve is 22.5%.

TABLE 3

TABLE 4

Based on this, in another alternative embodiment, in the case that the heat provided by the electric vehicle is not sufficient to meet the heating requirements of the power battery and the cab at the same time, the heating priorities of the power battery and the cab are considered to be different. At this time, the temperature of the heating loop can be collected as a third temperature, and according to the heating priority of the power battery and the cockpit, a target temperature range w1 of the battery loop where the second temperature is located and a target temperature range w2 of the heating loop where the third temperature is located are determined from table 3 or table 4; further, the opening k3 of the three-way valve in the case where the heating priority of the power battery and the cockpit is satisfied is determined from w1 and w 2. Further, in order to satisfy the heating requirements of the power battery and the cockpit in three aspects of the cell temperature difference, the battery loop temperature and the heating priority, the target opening K of the three-way valve in the heating loop with the smallest opening value can be selected from the first opening K1, the second opening K2 and the third opening K3.

Based on the above, under the condition that the target opening K of the three-way valve in the heating circuit is determined, the three-way valve in the heating circuit is adjusted to the target opening K, so that the heating circuit can provide heat required by heating for the power battery and the cockpit according to the heating priority of the power battery and the cockpit when the electric vehicle is in the current working condition, and heat can be reasonably distributed for the power battery and the cockpit under the condition that the heat provided by the electric vehicle is certain.

In the embodiment of the application, the heating priority of a power battery and a cab in the electric automobile can be determined according to the current working condition of the electric automobile; furthermore, according to the corresponding relation between the heating priorities of the power battery and the cab and the opening degree of the three-way valve in the heating loop, the target opening degree corresponding to the three-way valve can be determined under the condition that the heating priorities of the power battery and the cab are met; based on the control method, the three-way valve is controlled to be adjusted to the target opening, and heat required by meeting the heating priority can be provided for the power battery and the cockpit under the current working condition of the electric automobile, so that heat can be reasonably distributed for the power battery and the cockpit.

It should be noted that the execution subjects of the steps of the methods provided in the above embodiments may be the same device, or different devices may be used as the execution subjects of the methods. For example, the execution subjects of steps S1 to S3 may be device a; for another example, the execution subject of steps S1 and S2 may be device a, and the execution subject of step S3 may be device B; and so on.

In addition, in some of the flows described in the above embodiments and the drawings, a plurality of operations that appear in a specific order are included, but it should be clearly understood that these operations may be executed out of the order they appear herein or in parallel, and the order of the operations, such as S1, S2, etc., is merely used to distinguish between the various operations, and the order itself does not represent any order of execution. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.

The embodiment of the application also provides a vehicle control system, and fig. 2 is a schematic structural diagram of the thermal management system provided by the embodiment of the application. As shown in FIG. 2, the vehicle control system includes a heating circuit; wherein, the heating loop is used for providing the heat required by heating for the power battery and the cockpit. In addition, the vehicle control system further includes a vehicle control unit (not shown in fig. 2), which may implement the steps in the above method embodiments, and control the heating circuit to provide heating required for heating the power battery and the cab. For a specific implementation process of the vehicle control unit, reference may be made to the above method embodiment, which is not described herein again.

The circuit configuration of the vehicle control system and the functions of the vehicle components in each circuit will be described below. As shown in fig. 2, the heating circuit includes a Water heater 09 (WPTC), and a heat exchanger 10 and a three-way valve 11; the water heater 09 is used for heating circulating water in the heating loop and is matched with the heat exchanger 10 to provide heat required by heating for the power battery 05 and/or the cockpit; the three-way valve 11 is arranged between the heating loop and the battery loop and used for communicating the heating loop with the battery loop so as to provide heat of the heating loop to the battery loop to heat the power battery 05 under the condition that the power battery 05 needs to be heated; in addition, the three-way valve 11 that connects the heating circuit and the battery circuit has different valve opening degrees, and the heating circuit provides different amounts of heat to the battery circuit per unit time, so that by adjusting the valve opening degrees, the heating circuit can be adjusted to provide different amounts of heat to the battery circuit.

In the embodiment of the present application, the battery circuit is respectively communicated with the heating circuit and the refrigeration circuit, as shown in fig. 2, the three-way valve 11 is disposed at a communication position of the battery circuit and the heating circuit and the refrigeration circuit, and is used for switching connectivity of the battery circuit and the heating circuit or the refrigeration circuit according to a heating requirement or a refrigeration requirement of the power battery 05, so that the battery circuit and the heating circuit are communicated and the refrigeration circuit is blocked under the condition that the power battery 05 has the heating requirement, and the battery circuit and the refrigeration circuit are communicated and the heating circuit is blocked under the condition that the power battery 05 has the refrigeration requirement, so as to meet the heating requirement or the refrigeration requirement of the power battery 05. As shown in fig. 2, the battery circuit further includes a water pump 1 for providing circulating water for the battery circuit and heating or cooling the power battery 05 as a medium for transferring energy; the heating loop also comprises a water pump 2 which is used for providing circulating water for the heating loop so as to be used as a medium for transferring heat in the heating loop.

In addition, the power battery 05 and the cockpit have a refrigeration requirement, wherein the air conditioner is used as a main vehicle component for changing the temperature of the cockpit, and under the condition that the cockpit has the refrigeration requirement, the vehicle control system can also realize a refrigeration function for the power battery 05 and the air conditioner, and correspondingly, the vehicle control system further comprises a refrigeration loop. As shown in fig. 2, the cooling circuit communicates with a battery circuit including a power battery 05 and a circuit in which an Air conditioner 06 (HVAC) is located. As shown in fig. 2, the refrigeration circuit includes a compressor 01, a condenser 02, an Electronic expansion Valve 03 (EXV), and a battery cooler 04 (Chiller); the compressor 01, the condenser 02 and the Chiller 04 are matched to provide a refrigerant required by refrigeration for the power battery 05 and/or the air conditioner 06; the electronic expansion valve 03 plays a role in throttle control, and the flow rate proportion of the refrigerant distributed to the power battery 05 and the air conditioner 06 can be adjusted under the condition that the valve ports of the electronic expansion valve 03 correspond to different opening degrees.

As shown in fig. 2, the vehicle control system further includes a solenoid valve 07 and a mechanical expansion valve 08; the electromagnetic valve 07 is equivalent to a switch between a refrigeration loop and the air conditioner 06, so that under the condition that the air conditioner 06 has a refrigeration requirement, the electromagnetic valve is opened according to a control instruction and introduces a refrigerant into the air conditioner 06, and the air conditioner 06 can realize a refrigeration function; the mechanical expansion valve 08 is capable of throttle-controlling the refrigerant flowing therethrough to allow the air conditioner 06 to achieve different levels of refrigeration demand. The specific content of the vehicle control system for realizing the cooling requirement of the power battery and the cockpit is not described in the embodiment of the present application, and only a brief description is provided here for fully describing the function of the vehicle control system.

An embodiment of the present application further provides an on-board device, fig. 3 is a schematic structural diagram of the on-board device according to the embodiment of the present application, and as shown in fig. 3, the on-board device includes: a processor 31 and a memory 32 in which computer programs are stored. The processor 31 and the memory 32 may be one or more.

The memory 32 is mainly used for storing computer programs, and these computer programs can be executed by the processor, so that the processor controls the vehicle-mounted device to implement corresponding functions and complete corresponding actions or tasks. In addition to storing computer programs, the memory may be configured to store other various data to support operations on the in-vehicle device, examples of which include instructions for any application or method operating on the in-vehicle device.

The memory 32, may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

In the embodiment of the present application, the implementation form of the processor 31 is not limited, and may be, for example, but not limited to, a CPU, a GPU, an MCU, or the like. The processor 31 may be regarded as a control system of the vehicle-mounted device, and may be configured to execute a computer program stored in the memory 32 to control the vehicle-mounted device to implement a corresponding function and complete a corresponding action or task. It is worth to be noted that, according to the implementation form and the scene of the vehicle-mounted device, the functions, actions or tasks to be implemented are different; accordingly, the computer programs stored in the memory 32 may be different, and the processor 31 executing different computer programs may control the in-vehicle device to perform different functions, perform different actions or tasks.

In some optional embodiments, as shown in fig. 3, the vehicle-mounted device may further include: communication components 33, a display 34, and power components 35. Only some components are schematically shown in fig. 3, which does not mean that the vehicle-mounted device only includes the components shown in fig. 3, and the vehicle-mounted device may further include other components according to different application requirements, depending on the product form of the vehicle-mounted device.

In the embodiment of the present application, when the processor 31 executes the computer program in the memory 32, it is configured to: determining the current working condition of the vehicle according to the using state of the vehicle; determining the heating priority of a power battery and a cab in the vehicle according to the current working condition; and providing heat required by heating for the power battery and the cockpit according to the heating priority.

In an alternative embodiment, the processor 31, when determining the current operating condition of the vehicle according to the usage state of the vehicle, is configured to: identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or acquiring the starting state of the vehicle from the driving system, and determining whether the current working condition of the vehicle is the running working condition.

In an alternative embodiment, the processor 31, when determining the heating priority of the power battery and the cockpit in the vehicle based on the current operating conditions, is configured to: acquiring a predefined priority sequence of the power battery and the cockpit under each working condition; and determining the heating priority of the power battery and the cab of the vehicle under the current working condition.

In an alternative embodiment, the processor 31, when providing the heat required for heating to the power battery and the cockpit according to the heating priority, is configured to: determining the target opening degree of a three-way valve in a heating loop according to the heating priority; and controlling the three-way valve to adjust to the target opening degree, and providing heat required by heating for the power battery and the cockpit.

In an alternative embodiment, the processor 31, when determining the target opening degree of the three-way valve in the heating circuit according to the heating priority, is configured to: acquiring a cell temperature difference of a power battery as a first temperature; collecting the temperature of the battery loop as a second temperature; if the heating priorities of the power battery and the cockpit are the same, determining the target opening degree of a three-way valve in a heating loop according to the first temperature and the second temperature; if the heating priorities of the power battery and the cockpit are different, acquiring the temperature of a heating loop as a third temperature; and determining the target opening degree of the three-way valve in the heating circuit according to the first temperature, the second temperature and the third temperature.

In an alternative embodiment, the processor 31, when determining the target opening degree of the three-way valve in the heating circuit based on the first temperature and the second temperature, is configured to: acquiring a first corresponding relation between a predefined electric core temperature difference range and the opening degree of a three-way valve; determining a target temperature difference range of the battery cell corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the target temperature difference range of the battery cell as a first opening; predefining a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve; determining a target temperature range corresponding to the second temperature from the second corresponding relation; taking the opening corresponding to the target temperature range as a second opening; from the first opening degree and the second opening degree, the target opening degree of the three-way valve in the heating circuit is selected as the opening degree with the smallest opening degree value.

In an alternative embodiment, the processor 31, when determining the target opening degree of the three-way valve in the heating circuit based on the first temperature, the second temperature and the third temperature, is configured to: determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening degree of the three-way valve according to the heating priority; determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third corresponding relation; setting the opening degree corresponding to the target temperature range of the battery circuit and the target temperature range of the heating circuit as a third opening degree; the target opening degree of the three-way valve in the heating circuit is selected from the first opening degree, the second opening degree, and the third opening degree, the opening degree value of which is the smallest.

Accordingly, the present application further provides a computer-readable storage medium storing a computer program, where the computer program is capable of implementing the steps that can be executed by the vehicle-mounted device in the foregoing method embodiments when executed.

The embodiment of the application also provides a vehicle heating control device. For example, the processing device may be implemented as a virtual device, such as an application program, in a Communications Control Unit (CCU). As shown in fig. 4, the vehicle heating control apparatus includes:

the first determining module 401 is configured to determine a current working condition of the vehicle according to a use state of the vehicle;

the second determining module 402 is used for determining the heating priority of a power battery and a cab in the vehicle according to the current working condition;

and the heating module 403 is used for providing heat required by heating for the power battery and the cockpit according to the heating priority.

In an alternative embodiment, the first determining module 401, when determining the current operating condition of the vehicle according to the usage state of the vehicle, is configured to: identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; or acquiring the starting state of the vehicle from the driving system, and determining whether the current working condition of the vehicle is the running working condition.

In an alternative embodiment, the second determination module 402, when determining the heating priority of the power battery and the cockpit in the vehicle based on the current operating conditions, is configured to: acquiring a predefined priority sequence of the power battery and the cockpit under each working condition; and determining the heating priority of the power battery and the cab of the vehicle under the current working condition.

In an alternative embodiment, the heating module 403, when providing the heat required for heating to the power battery and the cockpit according to the heating priority, is configured to: determining the target opening degree of a three-way valve in a heating loop according to the heating priority; and controlling the three-way valve to adjust to the target opening degree, and providing heat required by heating for the power battery and the cockpit.

In an alternative embodiment, the heating module 403, when determining the target opening degree of the three-way valve in the heating circuit according to the heating priority, is configured to: acquiring a cell temperature difference of a power battery as a first temperature; collecting the temperature of the battery loop as a second temperature; if the heating priorities of the power battery and the cockpit are the same, determining the target opening degree of a three-way valve in a heating loop according to the first temperature and the second temperature; if the heating priorities of the power battery and the cockpit are different, acquiring the temperature of a heating loop as a third temperature; and determining the target opening degree of the three-way valve in the heating circuit according to the first temperature, the second temperature and the third temperature.

In an alternative embodiment, the heating module 403, when determining the target opening degree of the three-way valve in the heating circuit based on the first temperature and the second temperature, is configured to: acquiring a first corresponding relation between a predefined electric core temperature difference range and the opening degree of a three-way valve; determining a target temperature difference range of the battery cell corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the target temperature difference range of the battery cell as a first opening; predefining a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve; determining a target temperature range corresponding to the second temperature from the second corresponding relation; taking the opening corresponding to the target temperature range as a second opening; from the first opening degree and the second opening degree, the target opening degree of the three-way valve in the heating circuit is selected as the opening degree with the smallest opening degree value.

In an alternative embodiment, the heating module 403, when determining the target opening degree of the three-way valve in the heating circuit according to the first temperature, the second temperature and the third temperature, is configured to: determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening degree of the three-way valve according to the heating priority; determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third corresponding relation; setting the opening degree corresponding to the target temperature range of the battery circuit and the target temperature range of the heating circuit as a third opening degree; the target opening degree of the three-way valve in the heating circuit is selected from the first opening degree, the second opening degree, and the third opening degree, the opening degree value of which is the smallest.

The communication component in the above embodiments is configured to facilitate communication between the device in which the communication component is located and other devices in a wired or wireless manner. The device where the communication component is located can access a wireless network based on a communication standard, such as a WiFi, a 2G, 3G, 4G/LTE, 5G and other mobile communication networks, or a combination thereof. In an exemplary embodiment, the communication component receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

The display in the above embodiments includes a screen, which may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

The power supply assembly of the above embodiments provides power to various components of the device in which the power supply assembly is located. The power components may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device in which the power component is located.

The audio component in the above embodiments may be configured to output and/or input an audio signal. For example, the audio component includes a Microphone (MIC) configured to receive an external audio signal when the device in which the audio component is located is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in a memory or transmitted via a communication component. In some embodiments, the audio assembly further comprises a speaker for outputting audio signals.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media 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 that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A vehicle heating control method, characterized by comprising:

determining the current working condition of the vehicle according to the using state of the vehicle;

determining the heating priority of a power battery and a cab in the vehicle according to the current working condition;

and providing heat required by heating for the power battery and the cockpit according to the heating priority.

2. The method of claim 1, wherein determining the current operating condition of the vehicle based on the usage status of the vehicle comprises:

identifying a charging mode of the vehicle, and determining whether the current working condition of the vehicle is a charging working condition; alternatively, the first and second electrodes may be,

and acquiring a vehicle starting state from a driving system, and determining whether the current working condition of the vehicle is a running working condition.

3. The method of claim 1, wherein determining a heating priority for a power battery and a cockpit in the vehicle based on the current operating conditions comprises:

acquiring a predefined priority sequence of the power battery and the cockpit under each working condition;

and determining the heating priority of the power battery and the cab of the vehicle under the current working condition according to the priority.

4. The method of claim 1, wherein providing the power battery and the cockpit with the heat required for heating based on the heating priority comprises:

determining the target opening degree of a three-way valve in a heating loop according to the heating priority;

and controlling the three-way valve to adjust the target opening degree, and providing heat required by heating for the power battery and the cockpit.

5. The method of claim 4, wherein determining a target opening of a three-way valve in a heating circuit based on the heating priority comprises:

acquiring the cell temperature difference of the power battery as a first temperature;

collecting the temperature of the battery loop as a second temperature;

if the heating priorities of the power battery and the cockpit are the same, determining the target opening degree of a three-way valve in a heating loop according to the first temperature and the second temperature;

if the heating priorities of the power battery and the cockpit are different, acquiring the temperature of the heating loop as a third temperature; and determining the target opening degree of a three-way valve in the heating circuit according to the first temperature, the second temperature and the third temperature.

6. The method of claim 5, wherein determining a target opening of a three-way valve in a heating circuit based on the first and second temperatures comprises:

acquiring a first corresponding relation between a predefined electric core temperature difference range and the opening degree of a three-way valve; determining a target cell temperature difference range corresponding to the first temperature from the first corresponding relation; taking the opening corresponding to the target temperature difference range of the electric core as a first opening;

predefining a second corresponding relation between the temperature range of the battery loop and the opening degree of the three-way valve; determining a target temperature range corresponding to the second temperature from the second corresponding relation; taking the opening corresponding to the target temperature range as a second opening;

and selecting the minimum opening degree value from the first opening degree and the second opening degree as a target opening degree of a three-way valve in the heating circuit.

7. The method of claim 6, comprising determining a target opening of a three-way valve in a heating circuit based on the first temperature, the second temperature, and the third temperature, comprising:

determining a third corresponding relation among the temperature range of the battery loop, the temperature range of the heating loop and the opening degree of the three-way valve according to the heating priority;

determining a target temperature range of the battery circuit corresponding to the second temperature and a target temperature range of the heating circuit corresponding to the third temperature from the third correspondence;

setting the opening degree corresponding to the target temperature range of the battery circuit and the target temperature range of the heating circuit as a third opening degree;

selecting a target opening degree of a three-way valve in the heating circuit, which is the smallest opening degree value, from among the first opening degree, the second opening degree, and the third opening degree.

8. A vehicle control system, characterized by comprising: the heating circuit is used for providing heat required by heating for the power battery and the cockpit;

the vehicle control unit is used for realizing the steps in the method of any one of claims 1-7, and controlling the heating loop to provide heat required by heating for the power battery and the cockpit.

9. The system of claim 8, wherein the vehicle control system further comprises a refrigeration circuit for providing refrigerant required for cooling the power battery and the cockpit.

10. A vehicle heating control apparatus characterized by comprising:

the first determining module is used for determining the current working condition of the vehicle according to the using state of the vehicle;

the second determination module is used for determining the heating priority of a power battery and a cab in the vehicle according to the current working condition;

and the heating module is used for providing heat required by heating for the power battery and the cockpit according to the heating priority.

11. An in-vehicle apparatus, characterized by comprising: a memory and a processor;

the memory to store one or more computer instructions;

the processor configured to execute the one or more computer instructions to implement the steps in the method of any one of claims 1-7.

12. A computer-readable storage medium storing a computer program, wherein the computer program, when executed, performs the steps of the method of any one of claims 1-7.