CN114665189A - Thermal management method and thermal management device for vehicle - Google Patents
Thermal management method and thermal management device for vehicle Download PDFInfo
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- CN114665189A CN114665189A CN202210334188.8A CN202210334188A CN114665189A CN 114665189 A CN114665189 A CN 114665189A CN 202210334188 A CN202210334188 A CN 202210334188A CN 114665189 A CN114665189 A CN 114665189A
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- 238000007726 management method Methods 0.000 title claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 115
- 239000002826 coolant Substances 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000000694 effects Effects 0.000 abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 101100337966 Arabidopsis thaliana GSDA gene Proteins 0.000 description 11
- 230000017525 heat dissipation Effects 0.000 description 9
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 238000012545 processing Methods 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
Abstract
The application provides a vehicle thermal management method and a thermal management device, the vehicle comprises a battery pack, a domain controller and a cooling system, the cooling system comprises a battery pack cooler, a first pipeline and a second pipeline, the first pipeline and the second pipeline are used for conveying coolant, the battery pack cooler and the battery pack are respectively positioned on the first pipeline, the second pipeline is connected in parallel on the first pipeline at two ends of the battery pack, the domain controller is positioned on the second pipeline, a valve is arranged on the second pipeline, and the method comprises the following steps: acquiring the working state of a battery pack cooler, wherein the working state is an opening state or a closing state; and adjusting the opening degree of the valve at least according to the working state, so that the coolant flows through the first pipeline and the second pipeline to cool the battery pack and the domain controller, or so that the coolant flows through the first pipeline to cool the battery pack. The problem that the cooling effect of the battery pack is not good in the prior art is solved.
Description
Technical Field
The application relates to the technical field of vehicle thermal management, in particular to a thermal management method, a thermal management device, a computer readable storage medium, a processor and a vehicle of the vehicle.
Background
At present, the automatic driving level in a high-end vehicle type is generally higher than the L2.5 level, which means that more chips for realizing the automatic driving function need to be integrated in an intelligent driving system controller, the heating power of the chips is higher, the common air cooling design cannot meet the heat dissipation requirement, and the water cooling scheme is adopted for heat dissipation.
Because a Domain Control Unit (DCU) cannot independently request inlet water temperature, the water cooling strategy that the DCU is connected with a battery PACK (PACK) in parallel is adopted in most of the existing schemes, under the condition, the DCU can occupy the refrigerating capacity of the PACK, and the problems of insufficient PACK refrigeration and poor PACK heating effect exist under partial conditions.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The present application mainly aims to provide a thermal management method, a thermal management device, a computer-readable storage medium, a processor and a vehicle for a vehicle, so as to solve the problem in the prior art that the cooling effect of a battery pack is not good.
According to an aspect of an embodiment of the present invention, there is provided a thermal management method for a vehicle, the vehicle including a battery pack, a domain controller, and a cooling system, the cooling system including a battery pack cooler, a first pipeline, and a second pipeline, the first pipeline and the second pipeline being used for conveying coolant, the battery pack cooler and the battery pack being respectively located on the first pipeline, the second pipeline being connected in parallel to the first pipeline at two ends of the battery pack, the domain controller being located on the second pipeline, and a valve being provided on the second pipeline, the method including: acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state; adjusting an opening degree of the valve at least according to the working state, so that the coolant flows through the first pipeline and the second pipeline to cool the battery pack and the domain controller, or so that the coolant flows through the first pipeline to cool the battery pack.
Optionally, adjusting the opening of the valve according to at least the operating state includes: controlling the valve to be opened to a first preset opening degree under the condition that the working state is the opening state; and under the condition that the working state is the closed state, controlling the valve to be opened to a second preset opening degree, wherein the second preset opening degree is larger than the first preset opening degree.
Optionally, before adjusting the opening degree of the valve according to at least the operating state, the method further includes: acquiring a first temperature, wherein the first temperature is data representing the working temperature of the domain controller; adjusting the opening of the valve at least according to the operating condition, comprising: and adjusting the opening degree of the valve according to the working state and the first temperature.
Optionally, adjusting the opening of the valve according to the operating state and the first temperature includes: when the working state is the opening state and the first temperature is smaller than a first threshold value, adjusting the opening degree of the valve to be a third preset opening degree; when the working state is the opening state and the first temperature is in a first temperature range, adjusting the opening degree of the valve to be a fourth preset opening degree; when the working state is the opening state and the first temperature is greater than a second threshold value, adjusting the opening degree of the valve to be a fifth preset opening degree, wherein the first threshold value is less than or equal to the minimum value of the first temperature range, the second threshold value is greater than or equal to the maximum value of the first temperature range, the third preset opening degree is less than or equal to a fourth preset opening degree, and the fourth preset opening degree is less than or equal to the fifth preset opening degree; when the working state is the closed state and the first temperature is smaller than a third threshold value, adjusting the opening degree of the valve to be a sixth preset opening degree; when the working state is the closed state and the first temperature is in a second temperature range, adjusting the opening degree of the valve to be a seventh preset opening degree; and when the working state is the closed state and the first temperature is greater than a fourth threshold value, adjusting the opening degree of the valve to an eighth preset opening degree, wherein the third threshold value is less than or equal to the minimum value of the second temperature range, the fourth threshold value is greater than or equal to the maximum value of the second temperature range, the sixth preset opening degree is less than or equal to the seventh preset opening degree, and the seventh preset opening degree is less than or equal to the eighth preset opening degree.
Optionally, adjusting the opening degree of the valve according to the operating state and the first temperature includes: adjusting the opening degree of the valve according to the working state and the first temperature under the condition that the first temperature is not in a third temperature range; an obtaining step of obtaining the adjusted first temperature; a determination step of determining whether the first temperature is in the third temperature range; and a circulating step, wherein the adjusting step, the obtaining step and the determining step are executed at least once in sequence until the first temperature is in the third temperature range.
Optionally, the method further comprises: acquiring a second temperature, wherein the second temperature is data representing the working temperature of the battery pack; controlling the working state of the battery pack cooler according to the second temperature, controlling the battery pack cooler to be turned on under the condition that the second temperature is greater than a fifth threshold value, and controlling the battery pack cooler to be turned off under the condition that the second temperature is less than or equal to the fifth threshold value.
According to another aspect of the embodiments of the present invention, there is also provided a thermal management apparatus for a vehicle, the vehicle including a battery pack, a domain controller, and a cooling system, the cooling system including a battery pack cooler, a first pipeline, and a second pipeline, the first pipeline and the second pipeline being used for conveying a coolant, the battery pack cooler and the battery pack being respectively located on the first pipeline, the second pipeline being connected in parallel to the first pipeline at both ends of the battery pack, the domain controller being located on the second pipeline, and a valve being provided on the second pipeline, the apparatus including: acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state; adjusting an opening degree of the valve at least according to the working state, so that the coolant flows through the first pipeline and the second pipeline to cool the battery pack and the domain controller, or so that the coolant flows through the first pipeline to cool the battery pack.
According to still another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program executes any one of the methods.
According to another aspect of the embodiments of the present invention, there is also provided a processor, configured to execute a program, where the program executes any one of the methods.
According to another aspect of the embodiments of the present invention, there is also provided a vehicle including a battery pack, a domain controller, and a cooling system, where the cooling system includes a battery pack cooler, a first pipeline, and a second pipeline, the first pipeline and the second pipeline are used for conveying coolant, the battery pack cooler and the battery pack are respectively located on the first pipeline, the second pipeline is connected in parallel on the first pipeline at two ends of the battery pack, the domain controller is located on the second pipeline, and a valve is provided on the second pipeline, and the vehicle further includes: control apparatus for the cooling system, comprising one or more processors, memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the methods described herein.
In the vehicle thermal management method, first, an operating state of the battery pack cooler in which the battery pack cooler is turned on or off is acquired, and then, according to the operating state, an opening degree of a valve is adjusted to allow a coolant to flow through a first pipeline and a second pipeline to cool the battery pack and a domain controller, or to allow the coolant to flow through the first pipeline to cool the battery pack. Compare among the prior art and adopt the parallelly connected cooling heat dissipation strategy of group battery and domain controller, the coolant can flow equally to domain controller place pipeline and group battery place pipeline, cause the problem that the group battery cooling effect is not good, this application is according to the operating condition of group battery cooler, the valve opening is adjusted, the flow that the coolant flowed through first pipeline and second pipeline is controlled, cool off group battery and domain controller to needs cooling, or through the aperture of adjusting the valve again, make the coolant only flow through first pipeline, cool off the group battery, the problem that the cooling effect of group battery among the prior art is not good has been alleviated, the cooling flow who occupies the group battery as few as possible has been guaranteed, give the group battery with more cooling capacity, guarantee that the group battery can work in suitable temperature interval. In addition, the present application does not require a request for the inlet water temperature, and determines the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time according to whether the battery pack cooler is operating, that is, when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 illustrates a schematic diagram of a thermal management structure of a vehicle according to an embodiment of the present application;
FIG. 2 shows a schematic flow diagram of a method of thermal management of a vehicle according to an embodiment of the present application;
FIG. 3 shows a schematic of a thermal management apparatus of a vehicle according to an embodiment of the application.
Wherein the figures include the following reference numerals:
100. a battery pack; 101. a domain controller; 102. a first pipeline; 103. a second pipeline; 104. and (4) a valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background of the invention, in order to solve the above problems, a method of thermal management of a vehicle, a thermal management apparatus, a computer-readable storage medium, a processor, and a vehicle are provided in an exemplary embodiment of the present application.
According to an embodiment of the present application, there is provided a thermal management method for a vehicle, as shown in fig. 1, the vehicle includes a battery pack 100, a domain controller 101, and a cooling system, the cooling system includes a battery pack cooler (not shown), a first pipe 102, and a second pipe 103, the first pipe 102 and the second pipe 103 are used for conveying coolant, the battery pack cooler and the battery pack 100 are respectively located on the first pipe 102, the second pipe 103 is connected in parallel to the first pipe 102 at two ends of the battery pack 100, the domain controller 101 is located on the second pipe 103, and a valve 104 is disposed on the second pipe 103.
FIG. 2 is a flow chart of a method of thermal management of a vehicle according to an embodiment of the present application. As shown in fig. 2, the method comprises the steps of:
step S101, acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state;
and a step S102 of adjusting an opening degree of the valve so that the coolant flows through the first pipe and the second pipe to cool the battery pack and the domain controller, or so that the coolant flows through the first pipe to cool the battery pack, at least according to the operating state.
In the vehicle thermal management method of the present application, first, an operating state of the battery pack cooler in which the battery pack cooler is turned on or off is acquired, and then, according to the operating state, the opening degree of the valve is adjusted to allow a coolant to flow through the first pipe and the second pipe to cool the battery pack and the domain controller, or to allow the coolant to flow through the first pipe to cool the battery pack. Compare among the prior art and adopt the parallelly connected cooling heat dissipation strategy of group battery and domain controller, the coolant can flow equally to domain controller place pipeline and group battery place pipeline, cause the problem that the group battery cooling effect is not good, this application is according to the operating condition of group battery cooler, the valve opening is adjusted, the flow that the coolant flowed through first pipeline and second pipeline is controlled, cool off group battery and domain controller to needs cooling, or through the aperture of adjusting the valve again, make the coolant only flow through first pipeline, cool off the group battery, the problem that the cooling effect of group battery among the prior art is not good has been alleviated, the cooling flow who occupies the group battery as few as possible has been guaranteed, give the group battery with more cooling capacity, guarantee that the group battery can work in suitable temperature interval. In addition, the inlet water temperature is not required to be requested, and the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time is determined according to whether the battery pack cooler is operating, i.e., when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
In the practical application process, the vehicle generally has two cooling modes, one is that the cooling liquid is radiated by a radiator at the front end of the vehicle, and the temperature of the cooling liquid is approximately equal to the ambient temperature, so that the vehicle is suitable for normal-temperature or low-temperature use environments; the other is that the coolant exchanges heat through a battery pack cooler (Chiller) of the vehicle, so that a lower coolant temperature can be obtained, the coolant temperature is generally about 20 ℃, and the coolant temperature is suitable for a high-temperature use environment, that is, when the battery pack cooler is not in operation, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is in operation, the actual water temperature is 20 ℃.
In order to further ensure that the battery pack operates in a suitable temperature range, according to another specific embodiment of the present application, the adjusting the opening degree of the valve at least according to the operating state includes: controlling the valve to be opened to a first preset opening degree under the condition that the working state is the opening state; and when the working state is the closed state, controlling the valve to be opened to a second preset opening degree, wherein the second preset opening degree is larger than the first preset opening degree. Under the condition that the working state is the opening state, the working temperature of the battery pack is higher at the moment, the dosage of the required coolant is larger, the valve is opened to a smaller first preset opening degree at the moment, the flow of the coolant in the second pipeline where the domain controller is located is smaller, and then most of the coolant flows to the first pipeline where the battery pack is located to cool the battery pack, so that the cooling effect of the battery pack is better. And under the condition that the working state is the closed state, the working temperature of the battery pack is not high at the moment, the required coolant dosage is small, and the valve is opened to a second preset opening degree which is larger at the moment, so that the flow of the coolant in the second pipeline where the domain controller is located is larger, the cooling effect of the battery pack is ensured, and meanwhile, the cooling effect of the domain controller is further ensured to be better.
According to another specific embodiment of the present application, before adjusting the opening of the valve according to at least the operating state, the method further includes: acquiring a first temperature, wherein the first temperature is data representing the working temperature of the domain controller; adjusting the opening of the valve at least according to the operating state, comprising: and adjusting the opening of the valve according to the working state and the first temperature. In this embodiment, the opening degree of the valve is adjusted according to the first temperature representing the operating temperature of the domain controller and the operating state, thereby further considering both the cooling effect of the battery pack and the cooling effect of the domain controller.
Specifically, obtaining the first temperature includes: the temperature reported by TAD4 (chip representing OIB temperature) is obtained. Because the main heating source in the domain controller is TAD4, the temperature reported by TAD4 is used as the working temperature of the whole domain controller, so that the first temperature can be obtained simply and conveniently. The opening degree of the valve is adjusted through the working state of the beller, and the opening degree of the valve is adjusted through the temperature of the domain controller, so that the battery pack can work in a proper temperature range, and the domain controller can work in a proper temperature range.
In order to further ensure a better cooling effect of both the battery pack and the domain controller, according to another specific embodiment of the present application, the adjusting the opening degree of the valve according to the operating state and the first temperature includes: when the working state is the opening state and the first temperature is smaller than a first threshold value, adjusting the opening degree of the valve to a third preset opening degree; when the working state is the opening state and the first temperature is in a first temperature range, adjusting the opening degree of the valve to a fourth preset opening degree; adjusting the opening degree of the valve to a fifth predetermined opening degree when the operating state is the open state and the first temperature is greater than a second threshold value, wherein the first threshold value is less than or equal to a minimum value of the first temperature range, the second threshold value is greater than or equal to a maximum value of the first temperature range, the third predetermined opening degree is less than or equal to a fourth predetermined opening degree, and the fourth predetermined opening degree is less than or equal to the fifth predetermined opening degree; when the operating state is the closed state and the first temperature is lower than a third threshold value, adjusting the opening degree of the valve to a sixth preset opening degree; when the working state is the closed state and the first temperature is in a second temperature range, adjusting the opening degree of the valve to a seventh preset opening degree; when the operating state is the closed state and the first temperature is greater than a fourth threshold value, the opening degree of the valve is adjusted to an eighth predetermined opening degree, wherein the third threshold value is less than or equal to a minimum value of the second temperature range, the fourth threshold value is greater than or equal to a maximum value of the second temperature range, the sixth predetermined opening degree is less than or equal to a seventh predetermined opening degree, and the seventh predetermined opening degree is less than or equal to the eighth predetermined opening degree.
In a specific embodiment, the first threshold value is 50 ℃, the first temperature range is 65 to 105 ℃, the second threshold value is 50 ℃, the second temperature range is 62 to 80 ℃, the fourth threshold value is 80 ℃, the third predetermined opening degree is 0, the fourth predetermined opening degree is 1L/min, the fifth predetermined opening degree is 3L/min, the sixth predetermined opening degree is 0, the seventh predetermined opening degree is 1L/min, and the eighth predetermined opening degree is 3L/min. Of course, the values of the parameters are not limited to the above values, and those skilled in the art can flexibly set the values according to actual situations. The adjustment gear position of the opening degree of the valve is not limited to the third predetermined opening degree, the fourth predetermined opening degree, the fifth predetermined opening degree, the sixth predetermined opening degree, the first predetermined opening degree, the seventh predetermined opening degree and the eighth predetermined opening degree, and those skilled in the art can set the number of gear positions according to actual requirements, such as setting only the third predetermined opening degree, the fourth predetermined opening degree and the fifth predetermined opening degree, or adding the ninth predetermined gear position and the tenth predetermined gear position in addition to the gear positions.
In another specific embodiment of the present application, adjusting the opening of the valve at least according to the operating state includes: the opening degree of the valve is adjusted according to at least one of a first temperature of the domain controller and a temperature limit ratio of the domain controller, an operating state of the battery pack cooler, and a current state of the domain controller.
Specifically, specific reference parameters for controlling the opening of the valve according to the operating state of the battery pack cooler, the current state of the domain controller, the first temperature of the domain controller and the temperature limit ratio are shown in table 1, wherein the current state of the domain controller is divided into a downshift cooling mode and a cooling request mode, when the battery pack cooler is in an open state, the downshift cooling mode of the domain controller includes uncooled, high-grade cooled first gear and high-grade cooled second gear, and the cooling request mode of the domain controller includes high-grade cooled first gear and high-grade cooled second gear; when the battery pack cooler is in an off state, the gear-down cooling of the domain controller comprises uncooled, low-gear cooling (gear) and low-gear cooling (gear), and the cooling request comprises low-gear cooling (gear) and low-gear cooling (gear). The temperature limit ratio of the domain controller is the ratio of the temperature reported by the TAD4 to the over-temperature of the TAD4, the over-temperature of the TAD4 can be 125 ℃, and specifically, when the battery pack cooler is in an open state and the domain controller is in high-grade cooling of a gear-withdrawing cooling state, if the first temperature is lower than 80 ℃, and the temperature limit ratio is lower than 64%, the opening degree of the valve is controlled to be 1L/min; when the battery pack cooler is in an open state and the domain controller is in a high-grade cooling first gear requiring cooling, if the first temperature meets the condition that T is more than or equal to 65 ℃ and less than 105 ℃, and the temperature limit ratio is between 52% and 84%, controlling the opening of the valve to be 1L/min; when the battery pack cooler is in an open state and the domain controller is in a high-grade cooling gear requiring cooling, if the first temperature is higher than 105 ℃, and the temperature limit ratio is higher than 84%, controlling the opening of the valve to be 3L/min; the corresponding adjustment parameters when the battery pack cooler is in the off state are shown in table 1, and are not described herein again.
TABLE 1
According to a specific embodiment of the present application, adjusting the opening degree of the valve according to the operating state and the first temperature includes: an adjustment step of adjusting an opening degree of the valve in accordance with the operating state and the first temperature when the first temperature is not within a third temperature range; an obtaining step of obtaining the adjusted first temperature; a determination step of determining whether the first temperature is within the third temperature range; and a circulating step of executing the adjusting step, the obtaining step and the determining step at least once in sequence until the first temperature is within the third temperature range. The opening of the valve is adjusted in a circulating mode, so that the working temperature of the domain controller can be automatically adjusted, and the working temperature of the domain controller can be kept within a proper temperature range.
In order to further ensure that the battery pack is always within the proper temperature range, and avoid damage to the battery pack due to over-high temperature, thereby further ensuring the service life of the battery pack, according to another specific embodiment of the present application, the method further comprises: acquiring a second temperature, wherein the second temperature is data representing the working temperature of the battery pack; and controlling the operating state of the battery pack cooler according to the second temperature, controlling the battery pack cooler to be turned on when the second temperature is higher than a fifth threshold, and controlling the battery pack cooler to be turned off when the second temperature is lower than or equal to the fifth threshold. Therefore, the automatic adjustment of the working temperature of the battery pack is realized, and the working temperature of the battery pack can be further kept in a proper temperature range.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
An embodiment of the present invention further provides a thermal management device of a vehicle, as shown in fig. 1, where the vehicle includes a battery pack 100, a domain controller 101, and a cooling system, the cooling system includes a battery pack cooler (not shown), a first pipeline 102, and a second pipeline 103, the first pipeline 102 and the second pipeline 103 are both used for conveying coolant, the battery pack cooler and the battery pack 100 are respectively located on the first pipeline 102, the second pipeline 103 is connected in parallel to the first pipeline 102 at two ends of the battery pack 100, the domain controller 101 is located on the second pipeline 103, and a valve 104 is disposed on the second pipeline 103. It should be noted that the thermal management device of the vehicle according to the embodiment of the present application may be used to execute the thermal management method for the vehicle according to the embodiment of the present application. The following describes a thermal management device for a vehicle according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a thermal management device of a vehicle according to an embodiment of the present application. As shown in fig. 3, the apparatus includes a first obtaining unit 10 and an adjusting unit 20, wherein the first obtaining unit 10 is configured to obtain an operating state of the battery pack cooler, and the operating state is an on state or an off state; the adjusting unit 20 is configured to adjust an opening degree of the valve such that the coolant flows through the first pipe and the second pipe to cool the battery pack and the domain controller, or such that the coolant flows through the first pipe to cool the battery pack, at least according to the operating state.
In the thermal management device for a vehicle according to the present application, the first acquisition means acquires an operating state of the battery pack cooler in which the battery pack cooler is turned on or off, and the adjustment means adjusts the opening of the valve according to the operating state, so that the coolant flows through the first pipe and the second pipe to cool the battery pack and the domain controller, or so that the coolant flows through the first pipe to cool the battery pack. Compare among the prior art and adopt the parallelly connected cooling heat dissipation strategy of group battery and domain controller, the coolant can flow equally to domain controller place pipeline and group battery place pipeline, cause the problem that the group battery cooling effect is not good, this application is according to the operating condition of group battery cooler, the valve opening is adjusted, the flow that the coolant flowed through first pipeline and second pipeline is controlled, cool off group battery and domain controller to needs cooling, or through the aperture of adjusting the valve again, make the coolant only flow through first pipeline, cool off the group battery, the problem that the cooling effect of group battery among the prior art is not good has been alleviated, the cooling flow who occupies the group battery as few as possible has been guaranteed, give the group battery with more cooling capacity, guarantee that the group battery can work in suitable temperature interval. In addition, the inlet water temperature is not required to be requested, and the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time is determined according to whether the battery pack cooler is operating, i.e., when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
In the practical application process, the vehicle generally has two cooling modes, one is that the cooling liquid is radiated by a radiator at the front end of the vehicle, and the temperature of the cooling liquid is approximately equal to the ambient temperature, so that the vehicle is suitable for normal-temperature or low-temperature use environments; the other is that the coolant exchanges heat through a battery pack cooler of the vehicle, and a lower coolant temperature can be obtained, wherein the coolant temperature is generally about 20 ℃, and the vehicle is suitable for a high-temperature use environment, that is, when the battery pack cooler is not in operation, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is in operation, the actual water temperature is 20 ℃.
In order to further ensure that the battery pack operates in a suitable temperature range, according to another specific embodiment of the present application, the adjusting unit includes a first control module and a second control module, wherein the first control module is configured to control the valve to open to a first predetermined opening degree when the operating state is the open state; the second control module is configured to control the valve to open to a second predetermined opening degree when the operating state is the closed state, where the second predetermined opening degree is greater than the first predetermined opening degree. Under the condition that the working state is the opening state, the working temperature of the battery pack is higher at the moment, the dosage of the required coolant is larger, the valve is opened to a smaller first preset opening degree at the moment, the flow of the coolant in the second pipeline where the domain controller is located is smaller, and then most of the coolant flows to the first pipeline where the battery pack is located to cool the battery pack, so that the cooling effect of the battery pack is better. And under the condition that the working state is the closed state, the working temperature of the battery pack is not high at the moment, the required coolant dosage is small, and the valve is opened to a second preset opening degree which is larger at the moment, so that the flow of the coolant in the second pipeline where the domain controller is located is larger, the cooling effect of the battery pack is ensured, and meanwhile, the cooling effect of the domain controller is further ensured to be better.
According to another specific embodiment of the present application, the apparatus further includes a second obtaining unit, where the second obtaining unit is configured to obtain a first temperature before adjusting the opening of the valve according to at least the operating state, where the first temperature is data representing an operating temperature of the domain controller; the adjusting unit comprises an adjusting module, and the adjusting module is used for adjusting the opening degree of the valve according to the working state and the first temperature. In this embodiment, the opening degree of the valve is adjusted according to the first temperature representing the operating temperature of the domain controller and the operating state, thereby further considering both the cooling effect of the battery pack and the cooling effect of the domain controller.
Specifically, obtaining the first temperature includes: and acquiring the temperature reported by TAD 4. Because the main heating source in the domain controller is TAD4, the temperature reported by TAD4 is used as the working temperature of the whole domain controller, so that the first temperature can be obtained simply and conveniently. The opening degree of the valve is adjusted through the working state of the Chiller, and meanwhile the opening degree of the valve is adjusted through the temperature of the domain controller, so that the battery pack can work in a proper temperature range, and meanwhile, the domain controller can work in a proper temperature range.
In order to further ensure that the cooling effect of the battery pack and the domain controller is good, according to another specific embodiment of the present application, the adjusting module includes a first adjusting submodule, a second adjusting submodule, a third adjusting submodule, a fourth adjusting submodule, a fifth adjusting submodule, and a sixth adjusting submodule, where the first adjusting submodule is configured to adjust the opening degree of the valve to a third predetermined opening degree when the operating state is the open state and the first temperature is less than a first threshold value; the second adjusting submodule is used for adjusting the opening degree of the valve to a fourth preset opening degree under the condition that the working state is the opening state and the first temperature is in a first temperature range; the third adjusting submodule is configured to adjust the opening degree of the valve to a fifth predetermined opening degree when the operating state is the on state and the first temperature is greater than a second threshold value, where the first threshold value is smaller than or equal to a minimum value of the first temperature range, the second threshold value is greater than or equal to a maximum value of the first temperature range, the third predetermined opening degree is smaller than or equal to a fourth predetermined opening degree, and the fourth predetermined opening degree is smaller than or equal to the fifth predetermined opening degree; the fourth adjusting submodule is configured to adjust the opening degree of the valve to a sixth predetermined opening degree when the operating state is the closed state and the first temperature is lower than a third threshold value; the fifth adjusting submodule is configured to adjust the opening degree of the valve to a seventh predetermined opening degree when the operating state is the closed state and the first temperature is within a second temperature range; the sixth adjustment submodule is configured to adjust the opening degree of the valve to an eighth predetermined opening degree when the operating state is the closed state and the first temperature is greater than a fourth threshold value, the third threshold value is smaller than or equal to a minimum value of the second temperature range, the fourth threshold value is greater than or equal to a maximum value of the second temperature range, the sixth predetermined opening degree is smaller than or equal to a seventh predetermined opening degree, and the seventh predetermined opening degree is smaller than or equal to the eighth predetermined opening degree.
In a specific embodiment, the first threshold value is 50 ℃, the first temperature range is 65 to 105 ℃, the second threshold value is 50 ℃, the second temperature range is 62 to 80 ℃, the fourth threshold value is 80 ℃, the third predetermined opening degree is 0, the fourth predetermined opening degree is 1L/min, the fifth predetermined opening degree is 3L/min, the sixth predetermined opening degree is 0, the seventh predetermined opening degree is 1L/min, and the eighth predetermined opening degree is 3L/min. Of course, the values of the parameters are not limited to the above values, and those skilled in the art can flexibly set the values according to actual situations. The adjustment gear position of the opening degree of the valve is not limited to the third predetermined opening degree, the fourth predetermined opening degree, the fifth predetermined opening degree, the sixth predetermined opening degree, the first predetermined opening degree, the seventh predetermined opening degree and the eighth predetermined opening degree, and those skilled in the art can set the number of gear positions according to actual requirements, such as setting only the third predetermined opening degree, the fourth predetermined opening degree and the fifth predetermined opening degree, or adding the ninth predetermined gear position and the tenth predetermined gear position in addition to the gear positions.
In yet another specific embodiment of the present application, the adjustment module includes an eighth adjustment submodule configured to adjust the opening of the valve according to at least one of the first temperature of the domain controller and the temperature limit ratio of the domain controller, the operating state of the battery pack cooler, and the current state of the domain controller.
Specifically, specific reference parameters for controlling the opening of the valve according to the operating state of the battery pack cooler, the current state of the domain controller, the first temperature of the domain controller and the temperature limit ratio are shown in table 1, wherein the current state of the domain controller is divided into a downshift cooling mode and a cooling request mode, when the battery pack cooler is in an open state, the downshift cooling mode of the domain controller includes uncooled, high-grade cooled first gear and high-grade cooled second gear, and the cooling request mode of the domain controller includes high-grade cooled first gear and high-grade cooled second gear; when the battery pack cooler is in a closed state, the gear-down cooling of the domain controller comprises uncooled, low-gear cooling (gear) and low-gear cooling (gear), and the request cooling comprises low-gear cooling (gear) and low-gear cooling (gear). The temperature limit ratio of the domain controller is the ratio of the temperature reported by the TAD4 to the over-temperature of the TAD4, the over-temperature of the TAD4 can be 125 ℃, and specifically, when the battery pack cooler is in an open state and the domain controller is in high-grade cooling of a gear-withdrawing cooling state, if the first temperature is lower than 80 ℃, and the temperature limit ratio is lower than 64%, the opening degree of the valve is controlled to be 1L/min; when the battery pack cooler is in an open state and the domain controller is in a high-grade cooling first gear requiring cooling, if the first temperature meets the condition that T is more than or equal to 65 ℃ and less than 105 ℃, and the temperature limit ratio is between 52% and 84%, controlling the opening of the valve to be 1L/min; when the battery pack cooler is in an open state and the domain controller is in a high-grade cooling gear requiring cooling, if the first temperature is higher than 105 ℃, and the temperature limit ratio is higher than 84%, controlling the opening of the valve to be 3L/min; the corresponding adjustment parameters when the battery pack cooler is in the off state are shown in table 1, and are not described herein again.
According to a specific embodiment of the present application, the adjusting module includes an eighth adjusting submodule, an obtaining submodule, a determining submodule, and a cycling submodule, where the eighth adjusting submodule is configured to perform an adjusting step, and adjust the opening degree of the valve according to the working state and the first temperature when the first temperature is not within a third temperature range; the acquisition submodule is used for acquiring the adjusted first temperature; the determining submodule is used for determining whether the first temperature is in the third temperature range; the circulation submodule is configured to perform a circulation step, in which the adjusting step, the obtaining step, and the determining step are performed at least once in sequence until the first temperature is within the third temperature range. The opening of the valve is adjusted in a circulating mode, so that the working temperature of the domain controller can be automatically adjusted, and the working temperature of the domain controller can be kept within a proper temperature range.
In order to further ensure that the battery pack is always within the proper temperature range, and avoid damage to the battery pack due to over-high temperature, thereby further ensuring the service life of the battery pack, according to another specific embodiment of the present application, the apparatus further includes a third obtaining unit and a control unit, wherein the third obtaining unit is configured to obtain a second temperature, and the second temperature is data representing an operating temperature of the battery pack; the control unit is configured to control the operating state of the battery pack cooler according to the second temperature, control the battery pack cooler to be turned on when the second temperature is greater than a fifth threshold, and control the battery pack cooler to be turned off when the second temperature is less than or equal to the fifth threshold. Therefore, the automatic adjustment of the working temperature of the battery pack is realized, and the working temperature of the battery pack can be further kept in a proper temperature range.
The thermal management device of the vehicle includes a processor and a memory, the first acquiring unit, the adjusting unit, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem of poor cooling effect of the battery pack in the prior art is solved by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, which when executed by a processor, implements the above-described thermal management method for a vehicle.
The embodiment of the invention provides a processor, which is used for running a program, wherein the thermal management method of the vehicle is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state;
and a step S102 of adjusting an opening degree of the valve so that the coolant flows through the first pipe and the second pipe to cool the battery pack and the domain controller, or so that the coolant flows through the first pipe to cool the battery pack, at least according to the operating state.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program initialized with at least the following method steps when executed on a data processing device:
step S101, acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state;
and a step S102 of adjusting an opening degree of the valve so that the coolant flows through the first pipe and the second pipe to cool the battery pack and the domain controller, or so that the coolant flows through the first pipe to cool the battery pack, at least according to the operating state.
According to still another exemplary embodiment of the present application, there is provided a vehicle including a battery pack, a domain controller, and a cooling system, the cooling system including a battery pack cooler, a first pipe, and a second pipe, the first pipe and the second pipe being used for conveying a coolant, the battery pack cooler and the battery pack being respectively located on the first pipe, the second pipe being connected in parallel to the first pipe at both ends of the battery pack, the domain controller being located on the second pipe, the second pipe being provided with a valve, the vehicle further including: the control device of the cooling system comprises one or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise instructions for performing any one of the above methods.
The vehicle comprises a battery pack, a domain controller, a cooling system and a control device of the cooling system, wherein the control device can execute any one of the thermal management methods, and the method adjusts the opening degree of a valve according to the working state of a battery pack cooler to control the flow rates of coolant flowing through a first pipeline and a second pipeline so as to cool the battery pack and the domain controller which need to be cooled, or adjusts the opening degree of the valve so that the coolant only flows through the first pipeline to cool the battery pack, thereby relieving the problem of poor cooling effect of the battery pack in the prior art, ensuring the cooling flow rate occupying the battery pack as little as possible, distributing more cooling amount to the battery pack, ensuring that the battery pack can work in a proper temperature range, and ensuring the good overall heat dissipation effect of the vehicle. In addition, the present application does not require a request for the inlet water temperature, and determines the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time according to whether the battery pack cooler is operating, that is, when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) in the vehicle thermal management method of the present application, first, an operating state of the battery pack cooler is obtained, and then, according to the operating state, the opening degree of the valve is adjusted to allow a coolant to flow through the first pipe and the second pipe to cool the battery pack and the domain controller, or to allow the coolant to flow through the first pipe to cool the battery pack. Compare among the prior art and adopt the parallelly connected cooling heat dissipation strategy of group battery and domain controller, the coolant can flow equally to domain controller place pipeline and group battery place pipeline, cause the problem that the group battery cooling effect is not good, this application is according to the operating condition of group battery cooler, the valve opening is adjusted, the flow that the coolant flowed through first pipeline and second pipeline is controlled, cool off group battery and domain controller to needs cooling, or through the aperture of adjusting the valve again, make the coolant only flow through first pipeline, cool off the group battery, the problem that the cooling effect of group battery among the prior art is not good has been alleviated, the cooling flow who occupies the group battery as few as possible has been guaranteed, give the group battery with more cooling capacity, guarantee that the group battery can work in suitable temperature interval. In addition, the inlet water temperature is not required to be requested, and the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time is determined according to whether the battery pack cooler is operating, i.e., when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
2) In the vehicle thermal management device according to the present application, the first acquisition means acquires an operating state of the battery pack cooler in which the battery pack cooler is opened or closed, and the adjustment means adjusts the opening degree of the valve according to the operating state, so that the coolant flows through the first pipe and the second pipe to cool the battery pack and the domain controller, or so that the coolant flows through the first pipe to cool the battery pack. Compare among the prior art and adopt the parallelly connected cooling heat dissipation strategy of group battery and domain controller, the coolant can flow equally to domain controller place pipeline and group battery place pipeline, cause the problem that the group battery cooling effect is not good, this application is according to the operating condition of group battery cooler, the valve opening is adjusted, the flow that the coolant flowed through first pipeline and second pipeline is controlled, cool off group battery and domain controller to needs cooling, or through the aperture of adjusting the valve again, make the coolant only flow through first pipeline, cool off the group battery, the problem that the cooling effect of group battery among the prior art is not good has been alleviated, the cooling flow who occupies the group battery as few as possible has been guaranteed, give the group battery with more cooling capacity, guarantee that the group battery can work in suitable temperature interval. In addition, the present application does not require a request for the inlet water temperature, and determines the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time according to whether the battery pack cooler is operating, that is, when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
3) The vehicle comprises a battery pack, a domain controller, a cooling system and a control device of the cooling system, wherein the control device can execute any one of the thermal management methods, and the method adjusts the opening degree of a valve according to the working state of a battery pack cooler to control the flow rates of coolant flowing through a first pipeline and a second pipeline so as to cool the battery pack and the domain controller which need to be cooled, or adjusts the opening degree of the valve to enable the coolant to only flow through the first pipeline to cool the battery pack, so that the problem of poor cooling effect of the battery pack in the prior art is solved, the cooling flow rate of the battery pack occupied as little as possible is ensured, more cooling amount is distributed to the battery pack, the battery pack can work in a proper temperature range, and the overall heat dissipation effect of the vehicle is better. In addition, the inlet water temperature is not required to be requested, and the inlet temperature (i.e., the temperature of the coolant flowing into the first duct and the second duct) at this time is determined according to whether the battery pack cooler is operating, i.e., when the battery pack cooler is not operating, the actual inlet temperature is the ambient temperature, and when the battery pack cooler is operating, the actual water temperature is the fixed temperature.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A thermal management method for a vehicle, the vehicle including a battery pack, a domain controller, and a cooling system, the cooling system including a battery pack cooler, a first pipeline, and a second pipeline, the first pipeline and the second pipeline being used for conveying a coolant, the battery pack cooler and the battery pack being respectively located on the first pipeline, the second pipeline being connected in parallel to the first pipeline at two ends of the battery pack, the domain controller being located on the second pipeline, and a valve being provided on the second pipeline, the method comprising:
acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state;
adjusting an opening degree of the valve at least according to the working state, so that the coolant flows through the first pipeline and the second pipeline to cool the battery pack and the domain controller, or so that the coolant flows through the first pipeline to cool the battery pack.
2. The method of claim 1, wherein adjusting the opening of the valve based on at least the operating condition comprises:
controlling the valve to be opened to a first preset opening degree under the condition that the working state is the opening state;
and under the condition that the working state is the closed state, controlling the valve to be opened to a second preset opening degree, wherein the second preset opening degree is larger than the first preset opening degree.
3. The method of claim 1,
before adjusting the opening of the valve at least according to the operating state, the method further comprises:
acquiring a first temperature, wherein the first temperature is data representing the working temperature of the domain controller;
adjusting the opening of the valve at least according to the working state, comprising:
and adjusting the opening degree of the valve according to the working state and the first temperature.
4. The method of claim 3, wherein adjusting the opening of the valve based on the operating condition and the first temperature comprises:
when the working state is the opening state and the first temperature is smaller than a first threshold value, adjusting the opening degree of the valve to be a third preset opening degree;
when the working state is the opening state and the first temperature is within a first temperature range, adjusting the opening degree of the valve to be a fourth preset opening degree;
when the working state is the opening state and the first temperature is greater than a second threshold value, adjusting the opening degree of the valve to be a fifth preset opening degree, wherein the first threshold value is less than or equal to the minimum value of the first temperature range, the second threshold value is greater than or equal to the maximum value of the first temperature range, the third preset opening degree is less than or equal to a fourth preset opening degree, and the fourth preset opening degree is less than or equal to the fifth preset opening degree;
when the working state is the closed state and the first temperature is smaller than a third threshold value, adjusting the opening degree of the valve to be a sixth preset opening degree;
when the working state is the closed state and the first temperature is in a second temperature range, adjusting the opening degree of the valve to be a seventh preset opening degree;
and when the working state is the closed state and the first temperature is greater than a fourth threshold value, adjusting the opening degree of the valve to an eighth preset opening degree, wherein the third threshold value is less than or equal to the minimum value of the second temperature range, the fourth threshold value is greater than or equal to the maximum value of the second temperature range, the sixth preset opening degree is less than or equal to the seventh preset opening degree, and the seventh preset opening degree is less than or equal to the eighth preset opening degree.
5. The method of claim 3, wherein adjusting the opening of the valve based on the operating condition and the first temperature comprises:
adjusting the opening degree of the valve according to the working state and the first temperature under the condition that the first temperature is not in a third temperature range;
an obtaining step of obtaining the adjusted first temperature;
a determination step of determining whether the first temperature is in the third temperature range;
and a circulating step, wherein the adjusting step, the obtaining step and the determining step are executed at least once in sequence until the first temperature is in the third temperature range.
6. The method according to any one of claims 1 to 5, further comprising:
acquiring a second temperature, wherein the second temperature is data representing the working temperature of the battery pack;
and controlling the working state of the battery pack cooler according to the second temperature, controlling the battery pack cooler to be started under the condition that the second temperature is greater than a fifth threshold value, and controlling the battery pack cooler to be stopped under the condition that the second temperature is less than or equal to the fifth threshold value.
7. A thermal management apparatus for a vehicle, the vehicle including a battery pack, a domain controller, and a cooling system, the cooling system including a battery pack cooler, a first pipe, and a second pipe, the first pipe and the second pipe being used to transport a coolant, the battery pack cooler and the battery pack being respectively located on the first pipe, the second pipe being connected in parallel on the first pipe at both ends of the battery pack, the domain controller being located on the second pipe, the second pipe being provided with a valve, the apparatus comprising:
acquiring the working state of the battery pack cooler, wherein the working state is an opening state or a closing state;
adjusting an opening degree of the valve at least according to the working state, so that the coolant flows through the first pipeline and the second pipeline to cool the battery pack and the domain controller, or so that the coolant flows through the first pipeline to cool the battery pack.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 6.
9. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 6.
10. A vehicle, the vehicle includes group battery, territory controller and cooling system, cooling system includes group battery cooler, first pipeline and second pipeline, first pipeline and the second pipeline all is used for carrying the coolant, group battery cooler with the group battery is located respectively on the first pipeline, the second pipeline is parallelly connected at group battery both ends on the first pipeline, territory controller is located on the second pipeline, be provided with the valve on the second pipeline, its characterized in that, the vehicle still includes:
control apparatus of the cooling system, comprising one or more processors, memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1 to 6.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115220490A (en) * | 2022-07-19 | 2022-10-21 | 岚图汽车科技有限公司 | Thermal management control method of domain controller and related equipment |
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