Battery cooling control method, device and equipment and computer storage medium

Abstract

The invention belongs to the technical field of new energy automobiles, and particularly relates to a battery cooling control method, device and equipment and a computer storage medium. The method comprises the following steps: acquiring currently determined target charging pile information, running parameters of a vehicle and the current temperature of the vehicle, and judging whether the current temperature is greater than a preset temperature or not; when the current temperature is larger than the preset temperature, according to the operation parameters and the maximum charging power of the target charging pile, the temperature estimated value and the charging temperature threshold value of the power battery when the vehicle arrives at the target charging pile are determined; and according to the temperature pre-estimated value and the charging temperature threshold value, the vehicle is controlled to start a battery heat management function to cool the power battery. According to the method, whether the power battery is cooled or not in the high-temperature environment can be more accurately determined, the danger of high-power charging of the power battery in the high-temperature environment is reduced, the dynamic property of the vehicle and the charging efficiency during charging and discharging are improved, and the vehicle using experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a battery cooling control method, device, equipment and computer storage medium. Background Art

[0002] At present, the electrification of automobiles has become an inevitable trend in the current industry. With the rapid development of new energy vehicles, industrial upgrading and policy support, pure electric vehicles have gained more and more favor from consumers. Compared with traditional fuel vehicles, electric vehicles have the advantages of fast torque response, stable power output, low noise, and significantly better control and driving performance than traditional vehicles.

[0003] The power batteries of existing electric vehicles are greatly affected by battery temperature. High-power charging and discharging of power batteries at high temperatures can easily lead to gas production inside the battery and a decrease in battery cycle life, which in turn causes the battery discharge power to decrease and the vehicle's power to be significantly reduced. When the power battery is charged in a high-temperature environment for a long time, the charging power will decrease as the temperature rises, causing the charging speed of the electric vehicle to be significantly reduced.

[0004] Therefore, when the discharge power of new energy vehicles is reduced due to the high temperature of the power battery, how to control the temperature of the power battery of the new energy vehicle to maintain it at a suitable temperature to increase the power of the vehicle is a problem that needs to be solved at present. Summary of the invention

[0005] The present application provides a battery cooling control method, device, equipment and computer storage medium to solve the defect that new energy vehicles cannot ensure that the power battery is at a suitable temperature in a high temperature environment, so that the charging and discharging power of the power battery is lower than the charging and discharging power in a normal temperature environment, thereby causing the vehicle's power to decrease.

[0006] In a first aspect, the present application provides a battery cooling control method, comprising:

[0007] Obtaining target charging pile information of the vehicle, operating parameters of the vehicle, and current temperature of the vehicle, wherein the target charging pile information includes: distance information between the vehicle and the target charging station and maximum charging power of the target charging station, and the operating parameters are used to indicate data information that can be detected during the operation of the vehicle;

[0008] Determining whether the current temperature is greater than a preset temperature;

[0009] When the current temperature is greater than the preset temperature, determining, according to the operating parameters and the maximum charging power, an estimated temperature value of the power battery when the vehicle arrives at the target charging pile and a charging temperature threshold value of the power battery;

[0010] According to the temperature estimation value and the charging temperature threshold, the vehicle is controlled to start a battery thermal management function to cool the power battery.

[0011] Optionally, the operating parameters include: real-time energy consumption of the vehicle and battery loss parameters of the vehicle, and the controlling the vehicle to enable a battery thermal management function to cool the power battery according to the temperature estimation value and the charging temperature threshold value includes:

[0012] Determine a normal power consumption value for the vehicle to reach a target charging pile according to the distance information and the real-time energy consumption;

[0013] According to the battery loss parameter, the normal power consumption value is corrected to obtain a first power consumption;

[0014] According to the first power loss, the temperature estimate and the charging temperature threshold, the vehicle is controlled to start a battery thermal management function to cool the power battery.

[0015] Optionally, the operating parameter includes: the heat generation power of the power battery, and determining, based on the operating parameter and the maximum charging power, an estimated temperature value of the power battery and a charging temperature threshold value of the power battery when the vehicle arrives at a target charging pile, includes:

[0016] Determine, based on the distance information, a preset time for the vehicle to reach the target charging pile;

[0017] Determining, based on the preset time and the heating power, the amount of heat generated by the battery when the vehicle reaches the target charging pile;

[0018] Determining an estimated temperature of the power battery when the vehicle arrives at a target charging pile according to the current operating temperature and the heat generated by the battery;

[0019] A charging temperature threshold of the power battery is determined according to the maximum charging power.

[0020] Optionally, the operating parameter includes: a current standard power of the vehicle, and controlling the vehicle to enable a battery thermal management function to cool the power battery according to the first power loss, the temperature estimate, and the charging temperature threshold includes:

[0021] Determining a current actual power level of the vehicle according to the battery loss parameter and the current standard power level;

[0022] taking the difference between the current actual power and the first power loss as the estimated remaining power of the vehicle, and determining whether the estimated remaining power is less than a remaining power threshold of the vehicle;

[0023] If the estimated remaining power is not less than the remaining power threshold of the vehicle, determining whether the estimated temperature value is greater than the charging temperature threshold;

[0024] When the estimated temperature is greater than the charging temperature threshold, a first operation request is sent to the vehicle, and the vehicle is controlled to start a battery thermal management function, wherein the first operation request is used to instruct cooling of the power battery.

[0025] Optionally, before determining whether the estimated remaining power is less than a remaining power threshold of the vehicle, the method further includes:

[0026] Obtaining a driving range threshold of the vehicle;

[0027] Determining the driving range power of the vehicle according to the driving range threshold and the real-time energy consumption;

[0028] A remaining power threshold of the vehicle is determined according to the actual total power and the driving range power.

[0029] Optionally, after controlling the vehicle to start a battery thermal management function to cool the power battery, the method further includes:

[0030] Acquiring a current driving route of the vehicle and an initial driving route of the vehicle to reach the target charging station;

[0031] Determining whether the current driving route is consistent with the initial driving route;

[0032] If the current driving route is consistent with the initial driving route, the vehicle is still controlled to start the battery thermal management function to cool the power battery;

[0033] If the current driving route is inconsistent with the initial driving route, determining the current distance information of the vehicle according to the current driving route;

[0034] Determine whether the current distance information is greater than a preset distance threshold;

[0035] If the current distance information is greater than a preset distance threshold, a second operation request is sent to the vehicle to control the vehicle to turn off a battery thermal management function and stop cooling the power battery.

[0036] Optionally, after controlling the vehicle to start a battery thermal management function to cool the power battery, the method further includes:

[0037] Re-acquiring the estimated remaining power of the vehicle and the current operating temperature of the power battery, and determining whether the new estimated remaining power is less than a remaining power threshold of the vehicle;

[0038] When the new estimated remaining power is less than the remaining power threshold, sending a second operation request to the vehicle, and controlling the vehicle to turn off a battery thermal management function, wherein the second operation request is used to instruct to stop cooling the power battery;

[0039] When the new estimated remaining power is not less than the remaining power threshold, determining whether the new current operating temperature is greater than the difference between the charging temperature threshold and a preset value;

[0040] When the current operating temperature is not greater than the difference between the charging temperature threshold and the preset value, the second operating request is sent to the vehicle, and the vehicle is controlled to turn off a battery thermal management function.

[0041] In a second aspect, the present application provides a battery cooling control device, comprising:

[0042] The acquisition module is used to obtain the target charging pile information of the vehicle, the operating parameters of the vehicle and the current temperature of the vehicle. The target charging pile information includes: the distance information between the vehicle and the target charging station and the maximum charging power of the target charging station. The operating parameters are used to indicate the data information that can be detected during the operation of the vehicle.

[0043] The judging module is used to judge whether the current temperature is greater than a preset temperature.

[0044] The determination module is used to determine, when the current temperature is greater than a preset temperature, an estimated temperature of the power battery when the vehicle arrives at the target charging pile and a charging temperature threshold of the power battery according to the operating parameters and the maximum charging power.

[0045] The control module is used to control the vehicle to start a battery thermal management function to cool the power battery according to the temperature estimation value and the charging temperature threshold.

[0046] Optionally, the determination module is further used to determine a normal power consumption value of the vehicle when it reaches a target charging pile based on the distance information and the real-time energy consumption.

[0047] The battery cooling control device also includes: a processing module.

[0048] The processing module is used to correct the normal power consumption value according to the battery loss parameter to obtain the first power loss.

[0049] The control module is further used to control the vehicle to start a battery thermal management function to cool the power battery according to the first power loss, the temperature estimate and the charging temperature threshold.

[0050] Optionally, the determination module is further used to determine a preset time for the vehicle to reach the target charging pile based on the distance information.

[0051] The determination module is further used to determine the heat generated by the battery when the vehicle reaches the target charging pile according to the preset time and the heating power.

[0052] The determination module is further used to determine an estimated temperature of the power battery when the vehicle arrives at a target charging pile according to the current operating temperature and the heat generated by the battery.

[0053] The determination module is further configured to determine a charging temperature threshold of the power battery according to the maximum charging power.

[0054] Optionally, the determination module is further used to determine the current actual power of the vehicle based on the battery loss parameter and the current standard power.

[0055] The processing module is further configured to use the difference between the current actual power and the first power loss as the estimated remaining power of the vehicle.

[0056] The judgment module is further used to judge whether the estimated remaining power is less than a remaining power threshold of the vehicle.

[0057] If the estimated remaining power is not less than the remaining power threshold of the vehicle, the judgment module is further used to judge whether the temperature estimation value is greater than the charging temperature threshold.

[0058] The battery cooling control device also includes: a sending module.

[0059] The sending module is used to send a first operation request to the vehicle when the temperature estimate is greater than the charging temperature threshold, wherein the first operation request is used to instruct cooling the temperature of the power battery.

[0060] The control module is also used to control the vehicle to enable a battery thermal management function.

[0061] Optionally, the acquisition module is also used to obtain a driving range threshold of the vehicle.

[0062] The determination module is further used to determine the driving range power of the vehicle according to the driving range threshold and the real-time energy consumption.

[0063] The determination module is further used to determine a remaining power threshold of the vehicle according to the actual total power and the driving range power.

[0064] Optionally, the acquisition module is further used to acquire the current driving route of the vehicle and the initial driving route of the vehicle to reach the target charging station.

[0065] The judgment module is further used to judge whether the current driving route is consistent with the initial driving route.

[0066] If the current driving route is consistent with the initial driving route, the control module is further used to control the vehicle to turn on the battery thermal management function to cool the power battery.

[0067] If the current driving route is inconsistent with the initial driving route, the determination module is further used to determine the current distance information of the vehicle according to the current driving route.

[0068] The judging module is further configured to judge whether the current distance information is greater than a preset distance threshold.

[0069] If the current distance information is greater than a preset distance threshold, the sending module is further configured to send a second operation request to the vehicle.

[0070] The control module is also used to control the vehicle to shut down the battery thermal management function and stop cooling the power battery.

[0071] Optionally, the acquisition module is also used to re-acquire the estimated remaining power of the vehicle and the current operating temperature of the power battery.

[0072] The judgment module is further used to judge whether the new estimated remaining power is less than the remaining power threshold of the vehicle.

[0073] The sending module is further used to send a second operation request to the vehicle when the new estimated remaining power is less than the remaining power threshold, and the second operation request is used to instruct to stop cooling the power battery.

[0074] The judgment module is further configured to judge whether the new current operating temperature is greater than the difference between the charging temperature threshold and a preset value when the new estimated remaining power is not less than the remaining power threshold.

[0075] The sending module is further configured to send the second operation request to the vehicle when the current operating temperature is not greater than the difference between the charging temperature threshold and the preset value.

[0076] In a third aspect, the present application provides a battery cooling control device, including:

[0077] Memory;

[0078] processor;

[0079] Wherein, the memory stores computer-executable instructions;

[0080] The processor executes the computer-executable instructions stored in the memory to implement the battery cooling control method as described in the first aspect and various possible implementations of the first aspect.

[0081] In a fourth aspect, the present application provides a computer storage medium having computer execution instructions stored thereon, wherein the computer execution instructions are executed by a processor to implement the battery cooling control method as described in the first aspect and various possible implementations of the first aspect.

[0082] The battery cooling control method provided by the present application obtains the currently determined target charging pile information, the vehicle's operating parameters, and the vehicle's current temperature, and determines whether the current temperature is greater than the preset temperature; when the current temperature is greater than the preset temperature, the temperature estimate of the power battery and the charging temperature threshold of the power battery when the vehicle reaches the target charging pile are determined according to the operating parameters and the maximum charging power of the target charging pile; and according to the temperature estimate and the charging temperature threshold, the vehicle is controlled to turn on the battery thermal management function to cool the power battery. This method can more accurately determine whether the power battery is cooled in a high temperature environment, reduce the danger of high-power charging of the power battery in a high temperature environment, improve the power of the vehicle, optimize the thermal management function of the vehicle in a high temperature environment, not only improve the working efficiency of the power battery during charging and discharging, but also improve the user's car experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0084] Figure 1 Schematic diagram of the battery cooling control method provided in this application Figure 1 ;

[0085] Figure 2 Schematic diagram of the battery cooling control method provided in this application Figure 2 ;

[0086] Figure 3 A schematic diagram of the structure of the battery cooling control device provided in this application;

[0087] Figure 4 This is a schematic diagram of the structure of the battery cooling control device provided in this application.

[0088] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0089] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0090] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein, for example.

[0091] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0092] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0093] At present, the electrification of automobiles has become an inevitable trend in the current industry. With the rapid development of new energy vehicles, industrial upgrading and policy support, pure electric vehicles have gained more and more favor from consumers. Compared with traditional fuel vehicles, electric vehicles have the advantages of fast torque response, stable power output, low noise, and significantly better control and driving performance than traditional vehicles.

[0094] The power batteries of existing electric vehicles are greatly affected by battery temperature. High-power charging and discharging of power batteries at high temperatures can easily lead to gas production inside the battery and a decrease in battery cycle life, which in turn causes the battery discharge power to decrease and the vehicle's power to be significantly reduced. When the power battery is charged in a high-temperature environment for a long time, the charging power will decrease as the temperature rises, causing the charging speed of the electric vehicle to be significantly reduced.

[0095] Therefore, how to control the thermal management of the power battery of new energy vehicles in summer so that the temperature of the power battery can be quickly raised to an appropriate range when users use the vehicle in a high temperature environment to increase the vehicle's power is the problem that needs to be solved at present.

[0096] In view of the above problems, the present application provides a battery cooling control method.

[0097] First, the implementation scenarios involved in this application are described.

[0098] New energy technology is the pillar of high technology, including nuclear energy technology, solar energy technology, coal-fired, magnetohydrodynamic power generation technology, geothermal energy technology, ocean energy technology, etc. Among them, nuclear energy technology and solar energy technology are the main symbols of new energy technology. The development and utilization of nuclear energy and solar energy have broken the traditional energy concept dominated by oil and coal, and created a new era of energy. With the continuous improvement of global environmental awareness, new energy vehicles, as an environmentally friendly, low-carbon and energy-saving mode of transportation, have gained more and more favor from consumers.

[0099] In the prior art, most new energy vehicles use power batteries to power the vehicle, but the power batteries of new energy vehicles are greatly affected by the battery temperature. In a high temperature environment, the charging power will be reduced for charging and discharging, resulting in a significant reduction in the charging speed and vehicle power. Therefore, according to the actual driving conditions of the vehicle, the temperature of the power battery needs to be adjusted. The vehicle involved in this application can be, for example, a new energy vehicle equipped with a battery thermal management function.

[0100] For example, when a new energy vehicle is driving in a high temperature environment, the operating temperature of the battery cannot meet the maximum charge and discharge power of the battery, thereby reducing the power of the new energy vehicle. At this time, it is necessary to cool the battery according to the operating temperature to achieve the purpose of improving the battery working efficiency.

[0101] The battery cooling control method provided by the present application obtains the current temperature of the vehicle, the most suitable charging temperature of the current power battery, the operating parameters of the vehicle, and the distance information between the vehicle and the target charging pile, and determines whether the current temperature is greater than the preset high temperature value; when the current temperature is greater than the preset high temperature value, the power battery needs to be cooled, and based on the operating parameters of the vehicle, the coolant flow rate during the cooling of the power battery is controlled, so that when the vehicle reaches the target charging pile, the temperature of the power battery is consistent with the most suitable charging temperature. This method can more accurately determine whether the power battery is cooled in a high temperature environment, reduce the danger of high-power charging of the power battery in a high temperature environment, improve the power of the vehicle, optimize the thermal management function of the vehicle in a high temperature environment, not only improve the working efficiency of the power battery during charging and discharging, but also improve the user's car experience.

[0102] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0103] Figure 1 Schematic diagram of the process of the battery cooling control method provided in the embodiment of the present application Figure 1 The execution subject of this embodiment may be, for example, a battery management system (BATTERY MANAGEMENT SYSTEM, hereinafter referred to as "BMS"), such as Figure 1 As shown, the battery cooling control method provided in this embodiment includes:

[0104] S101: Obtain target charging pile information of a vehicle, operating parameters of the vehicle, and current temperature of the vehicle.

[0105] Among them, the target charging pile information includes: the distance information between the vehicle and the target charging station and the maximum charging power of the target charging station. The operating parameters include: the heating power of the power battery and the current operating temperature. The current temperature is used to indicate the ambient temperature of the space where the vehicle is located.

[0106] It can be understood that the operating parameters are data information about the power battery that can be detected during the operation of the current vehicle, and the data information is data that changes continuously as the vehicle's driving time increases; the operating parameters include: the real-time energy consumption of the vehicle, the current operating temperature of the power battery, and the heating power of the power battery; the vehicle itself is equipped with a corresponding detection system that can detect the vehicle's operating parameters in real time, so the BMS can obtain the current vehicle's operating parameters in real time; and the detection system can also detect the ambient temperature of the space where the vehicle is located in real time. This embodiment does not impose any special restrictions on the operating parameters.

[0107] According to the current destination of the vehicle, that is, the target charging pile, different driving routes can be provided for the user. According to the driving route currently determined by the user, the distance information between the current vehicle and the target charging station can be obtained; the distance information can be obtained through the positioning system configured in the current vehicle, and the positioning system can reflect the distance information between the current vehicle and the target charging pile in real time; the maximum charging power is the maximum charging power that can be provided for the vehicle's power battery in the target charging station currently determined by the user, and the maximum charging power matches the charging power of the current power battery, thereby providing the user with a fast charging experience and improving the user's usage experience.

[0108] Through the detection system set up by the vehicle itself, the BMS obtains the current operating parameters of the vehicle and the current temperature of the space where the vehicle is located in real time, and obtains the corresponding distance parameters through the positioning system configured in the current vehicle and the target charging pile selected by the user.

[0109] For example, the operating parameters obtained by BMS include: the current real-time energy consumption of the vehicle is 0.15 degrees / km, the heat generation power of the power battery can be 1kw, and the current operating temperature of the power battery can be detected to be 5°C; the battery loss parameter of the current vehicle is 5 years, the distance information between the vehicle and the target charging pile is 40km, and the maximum charging power of the target charging pile is 120kw, and the current temperature is 38°C.

[0110] S102: Determine whether the current temperature is greater than a preset temperature.

[0111] The preset temperature may be 36° C., for example.

[0112] The purpose of judging whether the current temperature is greater than the preset temperature in this step is to determine whether the current driving environment of the vehicle is a high temperature environment.

[0113] If the current temperature is greater than the preset temperature, it means that the vehicle is currently driving in a high temperature environment. At this time, the power battery needs to be cooled. However, the actual situation of the cooling of the power battery cannot be determined at present. It is necessary to control the coolant flow rate during cooling of the power battery based on the vehicle's operating parameters while ensuring that the vehicle's energy consumption is low.

[0114] If the current temperature is not greater than the preset temperature, it indicates that the vehicle is not currently driving in a high temperature environment. At this time, it is necessary to further determine whether cooling is required based on the operating temperature of the power battery.

[0115] For example, if the current temperature is 38°C and 38°C>36°C, it means that the current vehicle is traveling in a high temperature environment. At this time, it is necessary to control the coolant flow rate during cooling of the power battery based on the vehicle's operating parameters while ensuring that the vehicle's energy consumption is low; if the current temperature is 27°C and 27°C<36°C, it means that the current vehicle is not traveling in a high temperature environment. At this time, it is necessary to further determine whether cooling is needed based on the operating temperature of the power battery.

[0116] S103: When the current temperature is greater than a preset temperature, determining an estimated temperature of the power battery when the vehicle arrives at a target charging pile and a charging temperature threshold of the power battery according to the operating parameters and the maximum charging power.

[0117] When the current temperature is greater than the preset temperature, the power battery needs to be cooled, but the actual cooling of the power battery needs to be controlled according to the operating parameters of the power battery and the maximum charging power of the target charging pile.

[0118] Among them, the temperature estimate is used to indicate the battery temperature of the power battery when the vehicle arrives at the target charging pile, and the charging temperature threshold is used to indicate the corresponding operating temperature when the power battery of the current vehicle can reach the maximum charging power during the charging process.

[0119] It is understandable that the current vehicle is equipped with cooling pipes, and the purpose of cooling the power battery is achieved by controlling the flow of coolant. When the power battery is charged at high power in a high temperature environment, it is easy to cause gas production inside the battery and the battery cycle life to decay, thereby increasing the danger of the battery and reducing the charging and discharging power of the power battery. Therefore, in order to reduce the safety hazards when the vehicle is charged at the maximum charging power in a high temperature environment, and to ensure the charging efficiency of the vehicle, the operating temperature of the power battery needs to be adjusted to ensure that when the vehicle reaches the target charging pile, the operating temperature of the power battery is consistent with the operating temperature corresponding to the highest charging efficiency of the current vehicle.

[0120] After determining the heating power of the current power battery, the distance information between the current vehicle and the target charging station is determined according to the destination of the current vehicle, that is, the target charging station. Based on the current operating temperature of the power battery, after the current vehicle travels a corresponding distance at the heating power of the power battery, the operating temperature of the power battery is estimated to obtain an estimated temperature of the power battery when the vehicle arrives at the target charging pile. According to the target charging pile in the target charging station currently selected by the user, the maximum charging power provided by the target charging pile to the user can be determined. According to the maximum charging power, the charging temperature threshold of the current power battery is determined, so that the charging efficiency of the power battery is improved during the charging process of the vehicle, and the time for the user to charge the vehicle is reduced.

[0121] For example, the heating power of the power battery can be 1kw, and the current operating temperature of the power battery can be detected to be 5°C. The current distance information between the vehicle and the target charging pile is 40km. After estimating the operating temperature of the power battery, the estimated temperature value T1°C is obtained; the currently determined maximum charging power of the target charging pile is 120kw, and the corresponding charging temperature threshold of the vehicle power battery can be 25°C.

[0122] S104: According to the temperature estimation value and the charging temperature threshold, controlling the vehicle to start a battery thermal management function to cool the power battery.

[0123] Based on the currently acquired temperature estimate, the operating temperature of the power battery when the vehicle arrives at the target charging pile can be determined, and the temperature estimate is compared with the charging temperature threshold; based on the comparison result, it can be determined whether the current vehicle needs to cool the power battery; after determining that the power battery needs to be cooled, the coolant flow rate is controlled according to the difference between the temperature estimate and the charging temperature threshold, so that when the vehicle arrives at the target charging pile, the operating temperature of the power battery is consistent with the charging temperature threshold, and the vehicle is controlled to cool the power battery according to the determined coolant flow rate.

[0124] For example, if the charging temperature threshold of the current vehicle's power battery is 25°C, the currently acquired temperature estimate is T1°C, and T1°C>25°C, the power battery needs to be cooled; based on the difference between T1°C and 25°C, the coolant flow rate is controlled, and then the vehicle is controlled to cool the power battery according to the determined coolant flow rate.

[0125] The battery cooling control method provided in this embodiment obtains the currently determined target charging pile information, the vehicle's operating parameters, and the vehicle's current temperature, and determines whether the current temperature is greater than the preset temperature; when the current temperature is greater than the preset temperature, the temperature estimate of the power battery and the charging temperature threshold of the power battery when the vehicle reaches the target charging pile are determined based on the operating parameters and the maximum charging power of the target charging pile; and based on the temperature estimate and the charging temperature threshold, the vehicle is controlled to turn on the battery thermal management function to cool the power battery. This method can more accurately determine whether the power battery is cooled in a high-temperature environment, reduces the danger of high-power charging of the power battery in a high-temperature environment, improves the power of the vehicle, and not only improves the working efficiency of the power battery during charging and discharging, but also improves the user's car experience in summer.

[0126] Figure 2 Schematic diagram of the process of the battery cooling control method provided in the embodiment of the present application Figure 2 .like Figure 2 As shown, in this embodiment Figure 1 Based on the embodiment, the battery cooling control method is described in detail. The battery cooling control method shown in this embodiment includes:

[0127] S201: Obtain target charging pile information of a vehicle, operating parameters of the vehicle, and current temperature of the vehicle.

[0128] S202: Determine whether the current temperature is greater than a preset temperature.

[0129] Steps S201-S202 are similar to the above-mentioned steps S101-S102 and will not be described in detail here.

[0130] S203: When the current temperature is greater than a preset temperature, determining a preset time for the vehicle to reach the target charging pile according to the distance information.

[0131] The preset duration is used to indicate the length of time required for the vehicle to travel from the current location to the target charging station.

[0132] It is understandable that the speed of the vehicle during driving will affect the speed at which the power battery consumes power. Therefore, in the process of obtaining the operating parameters of the power battery, the current driving speed of the vehicle can also be obtained.

[0133] When it is determined that the vehicle's driving environment is in a high temperature environment, the distance information between the current vehicle and the target charging pile and the current vehicle's driving speed are calculated and processed to determine the time it takes for the vehicle to reach the target charging pile, that is, to obtain the preset time it takes for the vehicle to reach the target charging pile.

[0134] For example, the distance between the current vehicle and the target charging pile is 40 km, and the current vehicle's driving speed is 50 km / h. After calculation, it can be obtained that the preset time for the current vehicle to reach the target charging pile is 0.8 h.

[0135] S204: Determine the amount of heat generated by the battery when the vehicle reaches the target charging pile according to the preset time and heating power.

[0136] Among them, the heat generation power is used to indicate the power of the power battery itself causing heat generation when the power battery continuously discharges to provide power for the vehicle. The heat generated by the battery is used to indicate the heat value generated by the heat generation power when the power battery is discharged.

[0137] Based on the preset time for the current vehicle to reach the target charging pile and the heat power generated by the vehicle during the driving process to reach the target charging pile, the two are calculated and processed to determine the heat generated by the battery when the vehicle reaches the target charging pile.

[0138] For example, the current power battery heat generation power is 1kw, and the preset time for the current vehicle to reach the target charging pile is 0.8h. Then the heat generated by the battery when the vehicle reaches the target charging pile is 0.8kwh.

[0139] S205: Determine an estimated temperature of the power battery when the vehicle arrives at a target charging pile according to the current operating temperature and the heat generated by the battery.

[0140] Based on the current operating temperature and the heat generated by the battery, the heat generated by the battery is calculated and processed to obtain the temperature change value of the vehicle when it reaches the target charging pile, and the sum of the temperature change value and the current temperature is used as the estimated temperature of the current power battery.

[0141] For example, the current operating temperature is 5°C, and the battery generates 0.8 kwh of heat when the vehicle reaches the target charging pile. After calculation, the temperature change value corresponding to the 0.8 kwh of heat generated by the battery is ΔT°C. (ΔT+5)°C=T1°C is used as the estimated temperature when the vehicle reaches the target charging pile, that is, the obtained estimated temperature is T1°C.

[0142] S206: Determine a charging temperature threshold of the power battery according to the maximum charging power.

[0143] Among them, the charging temperature threshold is used to indicate the operating temperature corresponding to when the power battery of the current vehicle can reach the maximum charging power during the charging process.

[0144] According to the target charging pile in the target charging station currently selected by the user, the maximum charging power provided by the target charging pile to the user can be determined. According to the maximum charging power, the current charging temperature threshold of the power battery is determined, so that during the charging process of the vehicle, the charging efficiency of the power battery is improved, reducing the time the user spends charging the vehicle each time.

[0145] For example, the currently determined maximum charging power of the target charging pile is 120kw, and the charging temperature threshold of the power battery of the current vehicle may be 25°C.

[0146] S207: Determine a normal power consumption value for the vehicle to reach the target charging pile based on the distance information and the real-time energy consumption.

[0147] The normal power consumption value is used to indicate the power value consumed by the vehicle when traveling a certain distance under the current energy consumption.

[0148] Based on the distance parameters between the current vehicle and the target charging station and the real-time energy consumption of the current vehicle during driving, the BMS calculates and processes the two. It provides the user with a normal power consumption value based on the standard power to prompt the user of the power consumption of the current vehicle when it reaches the target charging station.

[0149] For example, if the current real-time energy consumption is 0.15 kWh / km and the distance information is 40 km, the current vehicle consumes 6 kWh of electricity for 40 km, and the normal power consumption value is 6 kWh.

[0150] S208: Correcting the normal power consumption value according to the battery loss parameter to obtain a first power consumption.

[0151] The first power loss is used to indicate the actual power consumed by the power battery when the vehicle reaches the target charging pile.

[0152] It can be understood that the battery loss parameter essentially reflects the current energy storage state of the power battery. The battery loss parameter reflects the actual energy storage situation of the power battery through the length of time the power battery continues to be used. Therefore, it can be determined that there is a correlation between the battery loss parameter and the service life of the power battery.

[0153] According to the currently determined distance parameter and the real-time energy consumption of the vehicle, the two are calculated and processed to obtain the corresponding power battery power consumption; according to the currently obtained battery loss parameter, the relationship between the current power and the actual power storage of the power battery can be obtained. According to the correlation, the currently obtained power battery power consumption is processed to obtain the first power loss of the current vehicle when it reaches the target charging pile.

[0154] For example, if the current battery loss parameter of the vehicle is 5 years, the power battery's energy attenuation rate is 20%; the standard total power of the power battery when it leaves the factory is 100 kWh, then the current total power of the power battery is 100*(1-20%)=80 kWh; if the battery energy consumption is 0.15 kWh / km, the distance to the charging station is 40km, and the vehicle consumes 6 kWh of electricity when it reaches the charging station, the proportion of the power consumed by the vehicle to reach the charging station to the current total power is 6 / 80=7.5%, and the first power loss currently obtained is 7.5%.

[0155] S209: According to the first power loss, the temperature estimate and the charging temperature threshold, controlling the vehicle to enable a battery thermal management function to cool the power battery.

[0156] It is understandable that the power battery will reduce the charging power for charging and discharging in low and high temperature conditions, which will significantly reduce the charging speed of the power battery and the power of the vehicle. Therefore, the power of the vehicle can be improved by adjusting the temperature of the power battery to an appropriate range, thereby improving the user experience. However, when the battery thermal management function is turned on, it will consume the vehicle's energy storage and accelerate the energy consumption of the power battery. In order to ensure that the vehicle can travel at least a fixed distance when it arrives at the target charging station to prevent the vehicle from being unable to move in case of emergencies, it is necessary to reserve enough power for the current vehicle to travel a fixed distance.

[0157] The currently acquired operating parameters of the vehicle also include: the current standard power, which is used to indicate the power value displayed on the vehicle display interface; based on the first power loss required for the vehicle to reach the currently determined target charging station and the current standard power, the power of the vehicle after reaching the target charging station can be estimated; and it is determined whether the power can support the vehicle to travel normally after arriving at the target charging station; if the power value estimated based on the first power loss and the current standard power can support the vehicle to travel a fixed distance after arriving at the target charging station, it indicates that the current vehicle has excess power to support cooling of the power battery; otherwise, it indicates that the current vehicle does not have excess power to cool the power battery.

[0158] After determining that the current vehicle has excess power to support cooling of the power battery, determine the operating temperature of the power battery when the vehicle arrives at the target charging pile, that is, the temperature estimate, based on the currently acquired temperature estimate, and compare the temperature estimate with the charging temperature threshold; based on the comparison result, it can be determined whether the current vehicle needs to cool the power battery; after determining that the power battery needs to be cooled, control the coolant flow in the cooling management based on the difference between the temperature estimate and the charging temperature threshold, so that when the vehicle arrives at the target charging pile, the operating temperature of the power battery is consistent with the charging temperature threshold, and control the vehicle to cool the power battery according to the determined coolant flow.

[0159] For example, after the vehicle reaches the target charging station, the fixed distance that it can still travel is 20 km, and the current real-time energy consumption is 0.15 kWh / km, then the actual power consumption is 3 kWh; if the current vehicle power battery requires 100 kWh to be fully charged, then the actual amount of power to be reserved should be 3%; if the estimated power value is greater than 3%, it indicates that the current power can support the vehicle to travel a fixed distance after reaching the target charging station, and the power battery can be cooled at this time; when the charging temperature threshold of the power battery of the current vehicle is 25°C, the currently acquired temperature estimate is T1°C, and T1°C>25°C, the coolant flow in the cooling pipeline is analyzed and processed to obtain a control method for the coolant flow corresponding to T1°C dropping to the charging temperature threshold, and at this time the vehicle is controlled to cool the power battery according to the control method for the coolant flow.

[0160] Optionally, the operating parameter includes: a current standard power of the vehicle, and controlling the vehicle to enable a battery thermal management function to cool the power battery according to the first power loss, the temperature estimate, and the charging temperature threshold includes:

[0161] The current actual power of the vehicle is determined based on the battery loss parameters and the current standard power; the difference between the current actual power and the first power loss is used as the estimated remaining power of the vehicle, and it is determined whether the estimated remaining power is less than the remaining power threshold of the vehicle; if the estimated remaining power is not less than the remaining power threshold of the vehicle, it is determined whether the temperature estimate is greater than the charging temperature threshold; when the temperature estimate is greater than the charging temperature threshold, a first operation request is sent to the vehicle, and the vehicle is controlled to turn on the battery thermal management function.

[0162] Among them, the first operation request is used to instruct the cooling of the temperature of the power battery, and the estimated remaining power is used to indicate the actual remaining power of the current vehicle after reaching the target charging pile.

[0163] According to the battery loss parameters of the power battery currently obtained, the battery loss parameters are analyzed and processed, and the current standard power is calculated and processed to obtain the relationship between the current actual power and the current standard power. According to the correlation, the current standard power is calculated and processed to obtain the current actual power of the vehicle, and the difference between the current actual power and the first power loss is used as the estimated remaining power of the current vehicle, that is, the actual energy storage remaining in the power battery after the vehicle arrives at the target charging pile; at this time, determine whether the estimated remaining power is less than the remaining power threshold of the vehicle.

[0164] If the estimated remaining power is less than the vehicle's remaining power threshold, it means that the current remaining power of the power battery may not be able to support the vehicle to travel to the target charging pile at the current energy consumption, or the current remaining power of the power battery supports the vehicle to travel to the target charging pile, but may cause the vehicle to be unable to move before charging, that is, the current remaining power of the vehicle is insufficient to guarantee the normal progress of the user's current driving. At this time, the battery thermal management function that controls the vehicle is in a turned-off state, and the power battery cannot be cooled, thereby reducing the energy consumption of the vehicle during driving and ensuring that the user can safely reach the target charging pile and charge.

[0165] If the estimated remaining power is not less than the vehicle's remaining power threshold, it indicates that the current remaining power of the power battery is sufficient to support the vehicle to travel to the target charging pile at the current energy consumption, that is, the current remaining power of the vehicle is sufficient. At this time, it is determined whether the estimated temperature is greater than the charging temperature threshold; when the estimated temperature is greater than the charging temperature threshold, a first operation request is sent to the vehicle, and the vehicle is controlled to turn on the battery thermal management function, and the vehicle is controlled to cool the power battery; otherwise, the battery thermal management function of the vehicle is controlled to be in an off state, and the power battery cannot be cooled.

[0166] For example, if the battery loss parameter of the current vehicle is 5 years, and the power battery's energy attenuation rate is 20%, the actual total power corresponding to the current vehicle's standard total power of 100% is 80%; if the current standard power of the vehicle is 15%, 0.8×15%=12%, then the actual power of the current power battery is 12%; when the first power loss is 7.5%, 12%-7.5%=4.5%, then the estimated remaining power is 4.5%; if the current remaining power threshold is 4%, 4.5%>4%>3%, then 4.5% of the power can support the vehicle to travel at least 20km after arriving at the target charging station. At this time, the estimated temperature is T1℃, and the charging temperature threshold is 25℃; if T1℃>25℃, it means that when the vehicle arrives at the target charging station, When the target charging pile is reached, the power battery continues to discharge. The heat generated by the battery's heating power makes the current operating temperature of the power battery still at a high level. There is still a temperature gap between T1℃ and 25℃, and the operating temperature of the power battery cannot reach the most suitable temperature. It is also impossible to ensure that the current charging power of the power battery is consistent with the maximum charging power of the target charging pile. There are potential safety hazards in the process of high-power charging of the vehicle under high temperature conditions. At this time, a request to "turn on the battery thermal management function" is sent to the vehicle, and the vehicle is controlled to turn on the battery thermal management function, thereby cooling the power battery temperature; if T1℃≤25℃, it means that when the vehicle reaches the target charging pile, the operating temperature of the power battery can be reduced to the most suitable charging temperature at the moment, and the vehicle's battery thermal management function does not need to be turned on at this time.

[0167] Optionally, before determining whether the estimated remaining power is less than a remaining power threshold of the vehicle, the method further includes:

[0168] Obtain the vehicle's driving range threshold; determine the vehicle's driving range power according to the driving range threshold and real-time energy consumption; determine the vehicle's remaining power threshold according to the actual total power and the driving range power.

[0169] Among them, the driving range threshold is used to indicate the shortest distance that the vehicle can travel when the vehicle needs to be charged. The driving range threshold may be, for example, 20km; the remaining power threshold is used to indicate the proportion of the driving range power in the actual total power.

[0170] It is understandable that different types of vehicles are set with different driving range thresholds, and different types of power batteries also correspond to different driving range thresholds. The driving range threshold is a pre-set minimum mileage that a vehicle can travel.

[0171] BMS can determine the driving range threshold set for the current vehicle by obtaining the type of the current vehicle and the model of the power battery. Based on the current power consumption of the vehicle per kilometer, and the minimum mileage set by the current vehicle to ensure that the vehicle can still travel when the vehicle needs to be charged, the two are multiplied. The product is the actual power consumed when the vehicle travels the mileage corresponding to the driving range threshold, and the actual power consumed is the driving range power of the current vehicle.

[0172] It can be understood that when determining the current vehicle's remaining power threshold, since the total amount of energy stored in the power battery changes continuously as the battery's service life decays, the remaining power threshold will also change with the change in battery service life. Therefore, it is necessary to determine the corresponding remaining power threshold based on the actual total amount of energy that the current power battery can store. The actual threshold of the current vehicle's remaining power can be determined more accurately through the ratio of the cruising range power to the actual total power.

[0173] For example, if the current real-time energy consumption is 0.15 kWh / km, 0.15×20=3 kWh, then the power consumption to ensure that the current vehicle can travel at least 20 km is 3 kWh; when the battery health level is 0.8, the current vehicle power battery actually requires 80 kWh to be fully charged, and at this time 3 / 80*100%=3.75%, then the power consumption to ensure that the current vehicle can travel 20 km is 3 kWh, and the corresponding power consumption accounts for 3.75% of the actual total power. At this time, the remaining power threshold of the current vehicle can be 4%.

[0174] S210: Acquire the current driving route of the vehicle and the initial driving route of the vehicle to reach the target charging station.

[0175] S211: Determine whether the current driving route is consistent with the initial driving route; if so, execute step S212; if not, execute step S213.

[0176] The purpose of this step of determining whether the current driving route is consistent with the initial driving route is to ensure that the vehicle can travel a fixed distance after reaching the target charging station.

[0177] The detection system currently set in the vehicle is used to obtain the current driving route of the vehicle and the initial driving route of the vehicle to the target charging station; and it is determined whether the current driving route is consistent with the initial driving route.

[0178] If the current driving route is consistent with the initial driving route, it means that the current vehicle is traveling according to the initial driving route. At this time, the vehicle continues to be controlled to turn on the battery thermal management function to cool the power battery.

[0179] If the current driving route is inconsistent with the initial driving route, it means that the current vehicle is not traveling according to the initial driving route. At this time, the additional distance that the vehicle needs to travel after deviating from the initial driving route is obtained.

[0180] S212: If the current driving route is consistent with the initial driving route, the vehicle is still controlled to enable a battery thermal management function to cool the power battery.

[0181] S213: If the current driving route is inconsistent with the initial driving route, determine the current distance information of the vehicle according to the current driving route.

[0182] S214: Determine whether the current distance information is greater than a preset distance threshold.

[0183] S215: If the current distance information is greater than a preset distance threshold, a second operation request is sent to the vehicle to control the vehicle to turn off a battery thermal management function and stop cooling the power battery.

[0184] The current distance information is used to indicate the additional driving distance of the vehicle compared to the initial driving route. The preset distance threshold may be, for example, 1 km. The second operation request is used to indicate to stop cooling the power battery.

[0185] When the current driving route deviates from the initial driving route, the current distance information of the vehicle is determined according to the degree of deviation between the current driving route and the initial driving route, and it is determined whether the current distance information is greater than a preset distance threshold.

[0186] If the current distance information is greater than the preset distance threshold, it indicates that the current vehicle has deviated from the initial driving route to a large extent. Continuing to cool the power battery cannot guarantee whether the vehicle can reach the target charging pile normally. At this time, a second operation request is sent to the vehicle, and the vehicle is controlled to turn off the battery thermal management function.

[0187] If the current distance information is not greater than the preset distance threshold, it indicates that the current vehicle has deviated from the initial driving route to a small extent. Continuing to cool the power battery can also ensure that the vehicle reaches the target charging pile normally. At this time, the driving route is redetermined and the vehicle is controlled to continue cooling the power battery.

[0188] For example, if the current distance information is 2km, 2km>1km, it means that the current driving route of the vehicle causes the vehicle to travel 2km more than the initial driving route. If the power battery continues to be cooled, it cannot be guaranteed whether the vehicle can reach the target charging pile normally. At this time, a request to "turn off the battery thermal management function" is sent to the vehicle, and the vehicle is controlled to turn off the battery thermal management function; if the current distance information is 0.5km, 0.5km is less than 1km, it means that the current driving route of the vehicle causes the vehicle to travel 0.5km more than the initial driving route. The current vehicle deviates from the initial driving route to a small extent. Continuing to cool the power battery can also ensure that the vehicle arrives at the target charging pile normally. At this time, the positioning system is controlled to re-acquire the vehicle's location information, and the driving route is re-determined, and the vehicle is controlled to continue to cool the power battery.

[0189] Optionally, after controlling the vehicle to start a battery thermal management function to cool the power battery, the method further includes:

[0190] Re-acquire the vehicle's estimated remaining power and the current operating temperature of the power battery, and determine whether the new estimated remaining power is less than the vehicle's remaining power threshold; when the new estimated remaining power is less than the remaining power threshold, send a second operation request to the vehicle, and control the vehicle to turn off the battery thermal management function; when the new estimated remaining power is not less than the remaining power threshold, determine whether the new current operating temperature is greater than the difference between the charging temperature threshold and the preset value; when the current operating temperature is not greater than the difference between the charging temperature threshold and the preset value, send a second operation request to the vehicle, and control the vehicle to turn off the battery thermal management function.

[0191] The preset value is a temperature margin for cooling the power battery to prevent the power battery temperature from rising rapidly again after stopping the cooling of the power battery, resulting in frequent cooling. The preset value may be 2° C., for example.

[0192] The purpose of this step of judging whether the new estimated remaining power is less than the remaining power threshold of the vehicle and whether the new current operating temperature is greater than the difference between the charging temperature threshold and the preset value is to determine whether it is necessary to continue cooling the power battery.

[0193] Through the detection system set in the vehicle, the estimated remaining power of the vehicle and the current operating temperature of the power battery are re-acquired, and it is determined whether the new estimated remaining power is less than the remaining power threshold of the vehicle; when the new estimated remaining power is less than the remaining power threshold, the remaining power of the vehicle after arriving at the target charging pile cannot support the vehicle to continue traveling a fixed distance. At this time, the battery thermal management function cannot be turned on, and the power battery cannot be cooled. In this case, a second operation request is sent to the vehicle, and the vehicle is controlled to turn off the battery thermal management function; when the new estimated remaining power is not less than the remaining power threshold, the remaining power of the vehicle after arriving at the target charging pile can support the vehicle to continue traveling a fixed distance. At this time, it is determined whether the new current operating temperature is greater than the difference between the charging temperature threshold and the preset value.

[0194] If the current operating temperature is not greater than the difference between the charging temperature threshold and the preset value, it indicates that the cooling treatment of the power battery has achieved the expected effect, that is, the operating temperature of the power battery has reached the charging temperature threshold, and the current vehicle has arrived at the target charging pile. At this time, a second operation request is sent to the vehicle, and the vehicle is controlled to turn off the battery thermal management function.

[0195] If the current operating temperature is greater than the difference between the estimated temperature and the preset temperature, it indicates that the cooling process for the power battery has not achieved the expected effect and the current vehicle has not yet reached the target charging pile. At this time, the power battery continues to be cooled.

[0196] For example, if the estimated remaining power is 3%, and 3% is less than 4%, the remaining power of the vehicle after arriving at the target charging pile cannot support the vehicle to continue traveling a fixed distance. At this time, the battery thermal management function cannot be turned on, and the power battery cannot be cooled. If the estimated remaining power is 4.5%, and 4.5% is greater than 4%, it means that the remaining power of the vehicle after arriving at the target charging pile can support the vehicle to continue traveling a fixed distance. At this time, a further determination is made on whether the power battery should be cooled based on the temperature estimation value and the current operating temperature to ensure the minimum energy consumption of the vehicle. The current operating temperature of the power battery obtained by BMS may be T2℃. If T2℃≤23℃, it indicates that the cooling treatment of the power battery has achieved the expected effect, that is, the operating temperature of the power battery has reached the charging temperature threshold, and the current vehicle has reached the target charging pile. At this time, a request to "turn off the battery thermal management function" is sent to the vehicle, and the vehicle is controlled to turn off the battery thermal management function; if T2℃>23℃, it indicates that the cooling treatment of the power battery did not make the operating temperature of the power battery reach the most suitable temperature, and the current vehicle has not yet reached the target charging pile, and the power battery still needs to be cooled.

[0197] The battery cooling control method provided by the present embodiment obtains the currently determined target charging pile information, the operating parameters of the vehicle and the current temperature of the vehicle, and determines whether the current temperature is greater than the preset temperature; when the current temperature is greater than the preset temperature, the preset time for the vehicle to reach the target charging pile is determined according to the distance information between the vehicle and the target charging station, and the heat generated by the battery when the vehicle reaches the target charging pile is determined according to the preset time and the heating power; the estimated temperature value of the power battery when the vehicle reaches the target charging pile is determined according to the current operating temperature and the heat generated by the battery; the charging temperature threshold of the power battery is determined according to the maximum charging power of the target charging station; the normal power consumption value of the vehicle when it reaches the target charging pile is determined according to the distance information and the real-time energy consumption, and then the normal power consumption value is corrected by the battery loss parameter to obtain the first 1. Power loss; according to the first power loss, the temperature estimation value and the charging temperature threshold, the vehicle is controlled to start the battery thermal management function to cool the power battery; after cooling the power battery, the current driving route of the vehicle and the initial driving route of the vehicle to the target charging station are obtained, and it is determined whether the current driving route is consistent with the initial driving route; if the current driving route is consistent with the initial driving route, the vehicle is still controlled to start the battery thermal management function to cool the power battery; if the current driving route is inconsistent with the initial driving route, the current distance information between the vehicle and the target charging pile is obtained, and it is determined whether the current distance information is greater than the preset distance threshold; if the current distance information is greater than the preset distance threshold, a second operation request is sent to the vehicle, the vehicle is controlled to turn off the battery thermal management function, and the power battery is stopped from being cooled. This method can more accurately determine whether the power battery is cooled in a high temperature environment, reduce the danger of high-power charging of the power battery in a high temperature environment, improve the power of the vehicle, optimize the thermal management function of the vehicle in a high temperature environment, not only improve the working efficiency of the power battery during charging and discharging, but also improve the user's car experience.

[0198] Figure 3 This is a schematic diagram of the structure of the battery cooling control device provided in this application. Figure 3 As shown, the present application provides a battery cooling control device, the battery cooling control device 300 includes:

[0199] The acquisition module 301 is used to obtain the target charging pile information of the vehicle, the operating parameters of the vehicle and the current temperature of the vehicle. The target charging pile information includes: the distance information between the vehicle and the target charging station and the maximum charging power of the target charging station. The operating parameters are used to indicate the data information that can be detected during the operation of the vehicle.

[0200] The judgment module 302 is used to judge whether the current temperature is greater than a preset temperature.

[0201] The determination module 303 is used to determine, when the current temperature is greater than a preset temperature, the estimated temperature of the power battery when the vehicle arrives at the target charging pile and the charging temperature threshold of the power battery according to the operating parameters and the maximum charging power.

[0202] The control module 304 is used to control the vehicle to start a battery thermal management function to cool the power battery according to the temperature estimation value and the charging temperature threshold.

[0203] Optionally, the determination module 303 is further used to determine a normal power consumption value of the vehicle when it reaches a target charging pile according to the distance information and the real-time energy consumption.

[0204] The battery cooling control device further includes: a processing module 305 .

[0205] The processing module 305 is used to correct the normal power consumption value according to the battery loss parameter to obtain a first power loss.

[0206] The control module 304 is further configured to control the vehicle to enable a battery thermal management function to cool the power battery according to the first power loss, the temperature estimate and the charging temperature threshold.

[0207] Optionally, the determination module 303 is further used to determine a preset time for the vehicle to reach the target charging pile according to the distance information.

[0208] The determination module 303 is further configured to determine the amount of heat generated by the battery when the vehicle reaches the target charging pile according to the preset time and the heating power.

[0209] The determination module 303 is further configured to determine an estimated temperature of the power battery when the vehicle arrives at a target charging pile according to the current operating temperature and the heat generated by the battery.

[0210] The determination module 303 is further configured to determine a charging temperature threshold of the power battery according to the maximum charging power.

[0211] Optionally, the determination module 303 is further used to determine the current actual power of the vehicle based on the battery loss parameter and the current standard power.

[0212] The processing module 305 is further configured to use the difference between the current actual power and the first power loss as the estimated remaining power of the vehicle.

[0213] The determination module 302 is further configured to determine whether the estimated remaining power is less than a remaining power threshold of the vehicle.

[0214] If the estimated remaining power is not less than the remaining power threshold of the vehicle, the determination module 302 is further configured to determine whether the estimated temperature value is greater than the charging temperature threshold.

[0215] The battery cooling control device further includes: a sending module 306 .

[0216] The sending module 306 is used to send a first operation request to the vehicle when the temperature estimate is greater than the charging temperature threshold, wherein the first operation request is used to instruct to cool the temperature of the power battery.

[0217] The control module 304 is further used to control the vehicle to enable a battery thermal management function.

[0218] Optionally, the acquisition module 301 is further used to obtain a driving range threshold of the vehicle.

[0219] The determination module 303 is further configured to determine the driving range power of the vehicle according to the driving range threshold and the real-time energy consumption.

[0220] The determination module 303 is further configured to determine a remaining power threshold of the vehicle according to the actual total power and the driving range power.

[0221] Optionally, the acquisition module 301 is further used to acquire the current driving route of the vehicle and the initial driving route of the vehicle to reach the target charging station.

[0222] The judgment module 302 is further used to judge whether the current driving route is consistent with the initial driving route.

[0223] If the current driving route is consistent with the initial driving route, the control module 304 is further used to control the vehicle to start a battery thermal management function to cool the power battery.

[0224] If the current driving route is inconsistent with the initial driving route, the determination module 303 is further configured to determine the current distance information of the vehicle according to the current driving route.

[0225] The judging module 302 is further configured to judge whether the current distance information is greater than a preset distance threshold.

[0226] If the current distance information is greater than a preset distance threshold, the sending module 306 is further configured to send a second operation request to the vehicle.

[0227] The control module 304 is further used to control the vehicle to turn off the battery thermal management function and stop cooling the power battery.

[0228] Optionally, the acquisition module 301 is further used to re-acquire the estimated remaining power of the vehicle and the current operating temperature of the power battery.

[0229] The determination module 302 is further configured to determine whether the new estimated remaining power is less than a remaining power threshold of the vehicle.

[0230] The sending module 306 is further configured to send a second operation request to the vehicle when the new estimated remaining power is less than the remaining power threshold, wherein the second operation request is configured to instruct to stop cooling the power battery.

[0231] The judgment module 302 is further configured to judge whether the new current operating temperature is greater than the difference between the charging temperature threshold and a preset value when the new estimated remaining power is not less than the remaining power threshold.

[0232] The sending module 306 is further configured to send the second operation request to the vehicle when the current operating temperature is not greater than the difference between the charging temperature threshold and the preset value.

[0233] Figure 4 This is a schematic diagram of the structure of the battery cooling control device provided in this application. Figure 4 As shown, the present application provides a battery cooling control device, and the battery cooling control device 400 includes: a receiver 401 , a transmitter 402 , a processor 403 and a memory 404 .

[0234] Receiver 401, for receiving instructions and data;

[0235] A transmitter 402, used for sending instructions and data;

[0236] Memory 404, for storing computer-executable instructions;

[0237] The processor 403 is used to execute the computer-executable instructions stored in the memory 404 to implement the various steps performed by the battery cooling control method in the above embodiment. For details, please refer to the relevant description in the above embodiment of the battery cooling control method.

[0238] Optionally, the memory 404 may be independent or integrated with the processor 403 .

[0239] When the memory 404 is independently provided, the electronic device further includes a bus for connecting the memory 404 and the processor 403 .

[0240] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the battery cooling control method executed by the above-mentioned battery cooling control device is implemented.

[0241] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0242] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0243] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery cooling control method, characterized in that: The method comprises: Obtaining target charging pile information of the vehicle, operating parameters of the vehicle, and current temperature of the vehicle, wherein the target charging pile information includes: distance information between the vehicle and the target charging station and maximum charging power of the target charging station, and the operating parameters are used to indicate data information that can be detected during the operation of the vehicle; Determining whether the current temperature is greater than a preset temperature; When the current temperature is greater than the preset temperature, determining, according to the operating parameters and the maximum charging power, an estimated temperature value of the power battery when the vehicle arrives at the target charging pile and a charging temperature threshold value of the power battery; According to the temperature estimation value and the charging temperature threshold, the vehicle is controlled to start a battery thermal management function to cool the power battery.

2. The method according to claim 1, characterized in that: The operating parameters include: the real-time energy consumption of the vehicle and the battery loss parameters of the vehicle. According to the temperature estimation value and the charging temperature threshold, controlling the vehicle to start the battery thermal management function to cool the power battery includes: Determine a normal power consumption value for the vehicle to reach a target charging pile according to the distance information and the real-time energy consumption; According to the battery loss parameter, the normal power consumption value is corrected to obtain a first power consumption; According to the first power loss, the temperature estimate and the charging temperature threshold, the vehicle is controlled to start a battery thermal management function to cool the power battery.

3. The method according to claim 2, characterized in that The operating parameters include: the heat generation power of the power battery, and determining the estimated temperature of the power battery and the charging temperature threshold of the power battery when the vehicle arrives at the target charging pile according to the operating parameters and the maximum charging power, including: Determine, based on the distance information, a preset time for the vehicle to reach the target charging pile; Determining, based on the preset time and the heating power, the amount of heat generated by the battery when the vehicle reaches the target charging pile; Determining an estimated temperature of the power battery when the vehicle arrives at a target charging pile according to the current operating temperature and the heat generated by the battery; A charging temperature threshold of the power battery is determined according to the maximum charging power.

4. The method according to claim 3, characterized in that The operating parameters include: the current standard power of the vehicle, and according to the first power loss, the temperature estimation value and the charging temperature threshold, controlling the vehicle to start a battery thermal management function to cool the power battery includes: Determining a current actual power level of the vehicle according to the battery loss parameter and the current standard power level; taking the difference between the current actual power and the first power loss as the estimated remaining power of the vehicle, and determining whether the estimated remaining power is less than a remaining power threshold of the vehicle; If the estimated remaining power is not less than the remaining power threshold of the vehicle, determining whether the estimated temperature value is greater than the charging temperature threshold; When the estimated temperature is greater than the charging temperature threshold, a first operation request is sent to the vehicle, and the vehicle is controlled to start a battery thermal management function, wherein the first operation request is used to instruct cooling of the power battery.

5. The method according to claim 4, characterized in that Before determining whether the estimated remaining power is less than a remaining power threshold of the vehicle, the method further includes: Obtaining a driving range threshold of the vehicle; Determining the driving range power of the vehicle according to the driving range threshold and the real-time energy consumption; A remaining power threshold of the vehicle is determined according to the actual total power and the driving range power.

6. The method according to claim 5, characterized in that After controlling the vehicle to start the battery thermal management function to cool the power battery, the method further includes: Acquiring a current driving route of the vehicle and an initial driving route of the vehicle to reach the target charging station; Determining whether the current driving route is consistent with the initial driving route; If the current driving route is consistent with the initial driving route, the vehicle is still controlled to start the battery thermal management function to cool the power battery; If the current driving route is inconsistent with the initial driving route, determining the current distance information of the vehicle according to the current driving route; Determine whether the current distance information is greater than a preset distance threshold; If the current distance information is greater than a preset distance threshold, a second operation request is sent to the vehicle to control the vehicle to turn off a battery thermal management function and stop cooling the power battery.

7. The method according to claim 6, characterized in that After controlling the vehicle to start the battery thermal management function to cool the power battery, the method further includes: Re-acquiring the estimated remaining power of the vehicle and the current operating temperature of the power battery, and determining whether the new estimated remaining power is less than a remaining power threshold of the vehicle; When the new estimated remaining power is less than the remaining power threshold, sending a second operation request to the vehicle, and controlling the vehicle to turn off a battery thermal management function, wherein the second operation request is used to instruct to stop cooling the power battery; When the new estimated remaining power is not less than the remaining power threshold, determining whether the new current operating temperature is greater than the difference between the charging temperature threshold and a preset value; When the current operating temperature is not greater than the difference between the charging temperature threshold and the preset value, the second operating request is sent to the vehicle, and the vehicle is controlled to turn off a battery thermal management function.

8. A battery cooling control device, characterized in that: The device comprises: An acquisition module, used to acquire the target charging pile information of the vehicle, the operating parameters of the vehicle and the current temperature of the vehicle, the target charging pile information includes: the distance information between the vehicle and the target charging station and the maximum charging power of the target charging station, and the operating parameters are used to indicate the data information that can be detected during the operation of the vehicle; A judging module, used to judge whether the current temperature is greater than a preset temperature; a determination module, configured to determine, when the current temperature is greater than a preset temperature, an estimated temperature of the power battery when the vehicle arrives at a target charging pile and a charging temperature threshold of the power battery according to the operating parameters and the maximum charging power; The control module is used to control the vehicle to start a battery thermal management function to cool the power battery according to the temperature estimation value and the charging temperature threshold.

9. A battery cooling control device, characterized in that: include: Memory; processor; Wherein, the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the battery cooling control method according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that: The computer storage medium stores computer executable instructions, and when the computer executable instructions are executed by a processor, they are used to implement the battery cooling control method according to any one of claims 1 to 7.

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