Battery thermal management 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 thermal management control method, device and equipment and a computer storage medium. The method comprises the following steps: acquiring a battery loss parameter of a vehicle, display residual electric quantity of a power battery, real-time energy consumption of the vehicle and a distance parameter; according to the battery loss parameter, carrying out correction processing on the displayed residual electric quantity to obtain an actual residual electric quantity; according to the distance parameter and the real-time energy consumption, first electric quantity loss of the vehicle arriving at the target charging pile is determined; according to the first electric quantity loss and the actual remaining electric quantity, the battery heat management function of the vehicle is controlled to be started and stopped, whether the power battery is subjected to heat management or not can be more accurately determined, it can be guaranteed that the vehicle stably reaches the charging pile to be charged, the risk when the power battery is subjected to high-power charging at the low temperature is reduced, and the service life of the vehicle is prolonged. And the car use experience of the user in winter is improved.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a battery thermal management 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. The internal resistance of the power batteries will increase at low temperatures, and the battery discharge power will decrease, resulting in a significant decrease in the vehicle's power. The charging power of the power batteries will also decrease at low temperatures, resulting in a significant decrease in the charging speed of the electric vehicle.

[0004] Therefore, how to control the thermal management of the power battery of new energy vehicles in winter to increase the vehicle's power is the problem that needs to be solved at present. Summary of the invention

[0005] The present application provides a battery thermal management control method, device, equipment and computer storage medium to solve the defect that the charging and discharging power of the power battery of a new energy vehicle in a low temperature environment is lower than that in a normal temperature environment, thereby causing a decrease in vehicle power.

[0006] In a first aspect, the present application provides a method for controlling battery thermal management, comprising:

[0007] Acquire the operating parameters and distance parameters of the vehicle, wherein the operating parameters include: the battery loss parameter of the vehicle, the displayed remaining power of the power battery, and the real-time energy consumption of the vehicle, and the distance parameter is used to indicate the driving distance between the vehicle and the target charging pile;

[0008] According to the battery loss parameter, the displayed remaining power is corrected to obtain the actual remaining power;

[0009] Determine, according to the distance parameter and the real-time energy consumption, a first power consumption of the vehicle when arriving at the target charging pile;

[0010] According to the first power loss and the actual remaining power, the battery thermal management function of the vehicle is controlled to be turned on and off.

[0011] Optionally, the correcting the displayed remaining power according to the battery loss parameter to obtain the actual remaining power includes:

[0012] According to the battery loss parameter, the standard total power of the power battery is corrected to obtain the actual total power of the power battery;

[0013] Determining a battery health level of the vehicle according to the standard total power and the actual total power;

[0014] The actual remaining power is determined according to the battery health and the displayed remaining power.

[0015] Optionally, determining a first power consumption of the vehicle when it reaches the target charging pile according to the distance parameter and the real-time energy consumption includes:

[0016] Determine a normal power consumption value of the vehicle when it reaches a target charging pile according to the distance parameter and the real-time energy consumption;

[0017] The normal power consumption value is corrected according to the battery health to obtain the first power loss.

[0018] Optionally, controlling the activation and deactivation of a battery thermal management function of the vehicle according to the first power loss and the actual remaining power includes:

[0019] taking the difference between the actual remaining power and the first power loss as the estimated remaining power of the vehicle;

[0020] Determining whether the estimated remaining power is less than a remaining power threshold of the vehicle;

[0021] When the estimated remaining power is less than a remaining power threshold of the vehicle, controlling a battery thermal management function of the vehicle to be in a closed state;

[0022] When the estimated remaining power is not less than a remaining power threshold of the vehicle, a battery thermal management function of the vehicle is controlled to be in an on state.

[0023] Optionally, before determining whether the estimated remaining power is less than a remaining power threshold of the vehicle, the method further includes:

[0024] Obtaining a driving range threshold of the vehicle;

[0025] Determining the driving range power of the vehicle according to the driving range threshold and the real-time energy consumption;

[0026] A remaining power threshold of the vehicle is determined according to the actual total power and the driving range power.

[0027] Optionally, the obtaining of distance parameters includes:

[0028] Obtaining road conditions and multiple charging station information within a preset range, wherein the charging station information includes: distance information, number of idle charging piles, and maximum charging power;

[0029] Determine a target charging station according to the road condition, the distance information corresponding to each charging station, the number of idle charging piles at each charging station, and the maximum charging power corresponding to each charging station, wherein the target charging station is a charging station with idle charging piles, a maximum charging power that matches the charging power of the vehicle, and a closest distance;

[0030] Any one of the at least one idle charging pile of the target charging station is used as the target charging pile, and the distance information corresponding to the target charging station in the distance information is used as the distance parameter.

[0031] In a second aspect, the present application provides a battery thermal management control device, comprising:

[0032] The acquisition module is used to obtain the vehicle's operating parameters and distance parameters, wherein the operating parameters include: the vehicle's battery loss parameters, the displayed remaining power of the power battery, and the vehicle's real-time energy consumption, and the distance parameters are used to indicate the driving distance between the vehicle and the target charging pile.

[0033] The correction module is used to correct the displayed remaining power according to the battery loss parameter to obtain the actual remaining power.

[0034] A determination module is used to determine a first power consumption of the vehicle when it reaches the target charging pile according to the distance parameter and the real-time energy consumption.

[0035] A control module is used to control the activation and deactivation of the battery thermal management function of the vehicle according to the first power loss and the actual remaining power.

[0036] Optionally, the correction module is further used to correct the standard total power of the power battery according to the battery loss parameter to obtain the actual total power of the power battery.

[0037] The determination module is further used to determine the battery health of the vehicle based on the standard total power and the actual total power.

[0038] The determination module is further used to determine the actual remaining power according to the battery health and the displayed remaining power.

[0039] 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 parameter and the real-time energy consumption.

[0040] The correction module is further used to correct the normal power consumption value according to the battery health status to obtain the first power loss.

[0041] Optionally, the determination module is further used to use the difference between the actual remaining power and the first power loss as the estimated remaining power of the vehicle.

[0042] The battery thermal management control device further includes: a judgment module.

[0043] The judgment module is used to judge whether the estimated remaining power is less than a remaining power threshold of the vehicle.

[0044] The control module is further used to control the battery thermal management function of the vehicle to be in a closed state when the estimated remaining power is less than a remaining power threshold of the vehicle.

[0045] The control module is further used to control the battery thermal management function of the vehicle to be in an on state when the estimated remaining power is not less than a remaining power threshold of the vehicle.

[0046] Optionally, the acquisition module is also used to obtain a driving range threshold of the vehicle.

[0047] 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.

[0048] 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.

[0049] Optionally, the acquisition module is specifically used to obtain road conditions within a preset range and information of multiple charging stations, and the charging station information includes: distance information, the number of idle charging piles and the maximum charging power.

[0050] The determination module is further used to determine a target charging station based on the road conditions, the distance information corresponding to each charging station, the number of idle charging piles at each charging station, and the maximum charging power corresponding to each charging station. The target charging station is a charging station that has idle charging piles, a maximum charging power that matches the charging power of the vehicle, and is the closest.

[0051] The determination module is further configured to use any one of the at least one idle charging pile of the target charging station as the target charging pile, and use the distance information corresponding to the target charging station in the distance information as the distance parameter.

[0052] In a third aspect, the present application provides a battery thermal management control device, including:

[0053] Memory;

[0054] processor;

[0055] Wherein, the memory stores computer-executable instructions;

[0056] The processor executes the computer-executable instructions stored in the memory to implement the battery thermal management control method as described in the first aspect and various possible implementations of the first aspect.

[0057] 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 thermal management control method as described in the first aspect and various possible implementations of the first aspect.

[0058] The battery thermal management control method provided in the present application obtains the operating parameters and distance parameters of the vehicle, wherein the operating parameters include: the battery loss parameter of the vehicle, the displayed remaining power of the power battery and the real-time energy consumption of the vehicle, and the distance parameter is used to indicate the driving distance between the vehicle and the target charging pile; according to the battery loss parameter, the displayed remaining power is corrected to obtain the actual remaining power; according to the distance parameter and the real-time energy consumption, the first power loss of the vehicle when reaching the target charging pile is determined; according to the first power loss and the actual remaining power, the on and off of the battery thermal management function of the vehicle is controlled. This method can not only more accurately determine whether the power battery is thermally managed, but also ensure that the vehicle stably arrives at the charging pile for charging, reduces the risk of high-power charging of the power battery at low temperatures, and improves the user's car experience in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] 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.

[0060] Figure 1 Schematic diagram of the control method for battery thermal management provided in this application Figure 1 ;

[0061] Figure 2 Schematic diagram of the control method for battery thermal management provided in this application Figure 2 ;

[0062] Figure 3 A schematic diagram of the structure of the battery thermal management control device provided in this application;

[0063] Figure 4A schematic diagram of the structure of the battery thermal management control device provided in this application.

[0064] 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

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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. At the same time, new energy vehicles have no pollutant emissions and will not cause air pollution; however, the power battery of electric vehicles is greatly affected by battery temperature.

[0070] At present, the charging and discharging power of power batteries of new energy vehicles at low temperatures will be lower than that at normal temperatures. The lower the battery temperature, the smaller the battery charging power and the slower the battery charging speed. In addition, high-power charging of power batteries at low temperatures is prone to lithium deposition, which increases battery safety risks.

[0071] At the same time, the internal resistance of the power battery increases at low temperatures, and the battery discharge power decreases. As the battery discharge power becomes smaller, the vehicle's power becomes worse, resulting in a very poor car experience for users in winter.

[0072] Therefore, how to control the thermal management of the power battery of new energy vehicles in winter to increase the vehicle's power is the problem that needs to be solved at present.

[0073] In response to the above-mentioned problems, the present application provides a battery thermal management control method. Before the vehicle reaches the charging pile, the method corrects the remaining power of the battery according to the current degree of battery loss, and then determines the start and stop of the vehicle's thermal management function according to the corrected remaining power and the power consumption value when arriving at the charging pile. This method can not only more accurately determine whether the power battery is thermally managed, but also ensure that the vehicle arrives at the charging pile for charging stably, thereby improving the user's car experience in winter.

[0074] 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.

[0075] Figure 1 Schematic diagram of the process of the battery thermal management 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 thermal management control method provided in this embodiment includes:

[0076] S101: Obtaining vehicle operation parameters and distance parameters.

[0077] The operating parameters include: the battery loss parameter of the vehicle, the displayed remaining power of the power battery, and the real-time energy consumption of the vehicle. The displayed remaining power is used to indicate the remaining power actually displayed on the display screen of the vehicle. The distance parameter is used to indicate the driving distance between the vehicle and the target charging pile, the battery loss parameter is used to indicate the remaining service life of the current power battery, and the real-time energy consumption is used to indicate the real-time energy consumption of the vehicle within a unit distance. The real-time energy consumption can be, for example, 0.15 degrees / kilometer.

[0078] It can be understood that the operating parameters are changing data. The vehicle itself is equipped with a corresponding detection system that can detect the operating parameters in real time. Therefore, the BMS can obtain the operating parameters in real time.

[0079] As the vehicle ages, the corresponding battery loss parameters also decrease; the remaining power displayed by the power battery and the real-time energy consumption of the vehicle are real-time data, which changes continuously during the driving process of the vehicle. The distance parameter can be obtained through the positioning system configured in the current vehicle, which can reflect the distance information between the current vehicle and the target charging pile in real time and plan a suitable driving route for the user.

[0080] Through the detection system set up by the vehicle itself, the BMS obtains the current operating parameters of the vehicle 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.

[0081] For example, the current battery loss parameter of the vehicle is 5 years, the displayed remaining power of the power battery is 80%, the current real-time energy consumption of the vehicle is 0.15 degrees / kilometer, and the distance parameter is 5 kilometers.

[0082] Optionally, the obtaining of distance parameters includes:

[0083] Obtain road conditions and information of multiple charging stations within a preset range; determine a target charging station based on the road conditions, the distance information corresponding to each charging station, the number of idle charging piles at each charging station, and the maximum charging power corresponding to each charging station; use any one of the at least one idle charging piles of the target charging station as the target charging pile, and use the distance information corresponding to the target charging station in the distance information as the distance parameter.

[0084] Among them, the preset range is used to indicate the distance range with the current vehicle as the center point and the preset length as the radius; the charging station information includes: distance information, the number of idle charging piles and the maximum charging power; the target charging station is the charging station with idle charging piles, the maximum charging power matches the charging power of the vehicle and is the nearest charging station. The preset range can be, for example, a distance range with the current vehicle as the center point and a radius of 5 kilometers.

[0085] Obtain road conditions within a preset range and distance information, the number of idle charging piles, and the maximum charging power of multiple charging stations within the preset range; provide users with multiple suitable options based on the currently acquired road conditions, the distance information corresponding to each charging station, the number of idle charging piles at each charging station, and the maximum charging power corresponding to each charging station, so that users can independently select the corresponding charging station for charging, and determine the charging station currently selected by the user as the target charging station, and use any one of the at least one idle charging piles in the target charging station as the target charging pile; then, based on the currently acquired distance information of multiple charging stations within the preset range, use the distance information corresponding to the target charging station in the multiple distance information as the distance parameter.

[0086] For example, the information of the three charging stations currently obtained may be: "Charging Station No. 1, 3 kilometers away, 5 idle charging piles, and a maximum charging power of 30 kilowatts", "Charging Station No. 2, 4 kilometers away, 2 idle charging piles, and a maximum charging power of 20 kilowatts", and "Charging Station No. 3, 2 kilometers away, 3 idle charging piles, and a maximum charging power of 30 kilowatts"; the obtained charging station information is provided to the user for the user to choose. If the user selects "Charging Station No. 1", then "Charging Station No. 1" is the target charging station, and any idle charging pile in Charging Station No. 1 is used as the target charging pile, and the distance information of 3 kilometers corresponding to Charging Station No. 1 is used as the current distance parameter.

[0087] S102: Correcting the displayed remaining power according to the battery loss parameter to obtain the actual remaining power.

[0088] Among them, the actual power level is used to indicate the actual energy storage of the vehicle's power battery.

[0089] According to the type of the current vehicle, the battery loss parameters of the current vehicle when it leaves the factory can be determined. At this time, the actual energy storage corresponding to the power battery can be reflected as the displayed power. According to the obtained battery loss parameters of the current vehicle and combined with the battery loss parameters of the vehicle, the remaining power displayed by the current vehicle is corrected to obtain the actual remaining power.

[0090] It can be understood that there is a correlation between the battery loss parameter and the displayed power, and this correlation is determined by the model and age of the power battery. By testing different models of power batteries under different years of use, it is possible to determine data information on multiple battery loss parameters and displayed power. Based on this data information, the displayed power of the vehicle corresponding to different battery loss parameters can be determined; there is also a correlation between the battery loss parameter and the actual power. As the age of the vehicle increases, the battery loss parameter gradually decreases, resulting in the actual energy storage decreasing as the battery loss parameter decreases when the vehicle is charging, but the displayed power does not change.

[0091] For example, the battery loss parameter of the current vehicle when it leaves the factory is 10 years, and the battery loss parameter is 5 years. At this time, the actual power corresponding to the remaining power of 100% displayed is 80%. If the remaining power displayed is 80%, the actual remaining power is 64%.

[0092] S103: Determine a first power consumption of the vehicle when it reaches a target charging pile according to the distance parameter and the real-time energy consumption.

[0093] The first power loss is used to indicate the actual power consumed by the power battery when the vehicle reaches the target charging pile.

[0094] 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; 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.

[0095] For example, the distance parameter may be 3 kilometers, and the real-time energy consumption may be 0.15 degrees per kilometer. Then, the energy consumption of the vehicle to reach the target charging pile is 0.45 degrees, and the first power loss is approximately 0.4%.

[0096] S104: Controlling the activation and deactivation of the battery thermal management function of the vehicle according to the first power loss and the actual remaining power.

[0097] Among them, the battery thermal management function is used to heat or cool the vehicle's power battery to a suitable charging temperature.

[0098] 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.

[0099] By calculating and processing the first power loss and the actual remaining power required for the vehicle to reach the currently determined target charging station, the power of the vehicle after reaching the target charging station can be estimated; based on the power, determine whether the power can support the vehicle to travel normally after reaching the target charging station; if the power can support the vehicle to travel a fixed distance after reaching the target charging station, the battery thermal management function of the current vehicle is controlled to be in an on state; if the power cannot support the vehicle to travel a fixed distance after reaching the target charging station, the battery thermal management function of the current vehicle is controlled to be in an off state.

[0100] For example, the fixed distance that the vehicle can travel after arriving at the target charging station is 20 kilometers, and the current real-time energy consumption is 0.15 degrees per kilometer. When the current vehicle power battery requires 105 degrees of electricity to be fully charged, the actual power consumption is 3 degrees, and the actual amount of electricity to be reserved is about 3%; the current actual circuit and the actual amount of electricity to be reserved are calculated and processed to determine whether the calculated amount of electricity can support the vehicle to travel a fixed distance after arriving at the target charging station, thereby controlling the start and stop of the battery thermal management function of the current vehicle.

[0101] The battery thermal management control method provided in this embodiment obtains the operating parameters and distance parameters of the vehicle, wherein the operating parameters include: the battery loss parameter of the vehicle, the displayed remaining power of the power battery and the real-time energy consumption of the vehicle, and the distance parameter is used to indicate the driving distance between the vehicle and the target charging pile; according to the battery loss parameter, the displayed remaining power is corrected to obtain the actual remaining power; according to the distance parameter and the real-time energy consumption, the first power loss of the vehicle when reaching the target charging pile is determined; according to the first power loss and the actual remaining power, the on and off of the battery thermal management function of the vehicle is controlled. This method can not only more accurately determine whether the power battery is thermally managed, but also ensure that the vehicle stably arrives at the charging pile for charging, thereby improving the user's car experience in winter.

[0102] Figure 2 Schematic diagram of the process of the battery thermal management 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 control method of battery thermal management is described in detail. The control method of battery thermal management shown in this embodiment includes:

[0103] S201: Obtaining vehicle operation parameters and distance parameters.

[0104] Step S201 is similar to the above step S101 and will not be described again.

[0105] S202: Correcting the standard total power of the power battery according to the battery loss parameter to obtain the actual total power of the power battery.

[0106] It is understandable that as the time users use the vehicle increases, the vehicle's power battery will produce irreversible losses, resulting in a reduction in the service life of the power battery, and also a reduction in the energy storage capacity of the power battery. That is, after the power battery has been used for a period of time, the actual energy storage capacity is lower than the energy storage capacity of the fully charged power battery when the vehicle leaves the factory. Through multiple tests on the power battery, a database corresponding to the correlation between the service life of the power battery and the battery loss parameters can be obtained, and the database contains power batteries of different models and the actual energy storage conditions after being used for different lengths of time.

[0107] By matching the battery loss parameters of the current vehicle obtained by BMS with the information in the database, the actual energy storage situation of the current vehicle can be determined; according to the actual energy storage situation of the current vehicle, the standard total power of the power battery is corrected to determine the actual total power of the power battery after a certain period of use, that is, to obtain the actual total power of the current power battery.

[0108] For example, if the battery loss parameter of the current vehicle when it leaves the factory is 10 years and the battery loss parameter is 5 years, the actual power corresponding to the standard total power of 100% should be 80%.

[0109] S203: Determine the battery health of the vehicle according to the standard total power and the actual total power.

[0110] Among them, the battery health level is used to indicate the energy storage capacity of the current vehicle's power battery compared to the power battery when it leaves the factory.

[0111] BMS can calculate and process the current standard total power and actual total power according to the currently determined standard total power, and then determine the battery health of the current vehicle's power battery according to the currently obtained calculation results.

[0112] Specifically, the BMS calculates and processes the standard total power and the actual total power, for example, by comparing the actual total power with the standard total power, and the resulting ratio can be used as the battery health of the power battery; since the actual total power is less than or equal to the standard total power, the ratio ranges from 0 to 1, and the unit of the ratio is 1.

[0113] For example, if the standard total power is 100%, and the corresponding actual power should be 80%, 80% / 100%=0.8, then the health level of the current vehicle's power battery is 0.8.

[0114] S204: Determine the actual remaining power according to the battery health status and the displayed remaining power.

[0115] The remaining power displayed is calculated based on the battery health of the power battery currently obtained, and the battery health is multiplied by the remaining power displayed. The product of the two is the actual remaining power.

[0116] It can be understood that the battery health and battery loss parameters actually reflect the current energy storage status of the power battery; among them, the battery health reflects the actual energy storage capacity of the power battery through specific numerical information, while the battery loss parameters reflect the actual energy storage status of the power battery through the length of time the power battery continues to be used.

[0117] For example, if the health level of the current vehicle's power battery is 0.8, and the remaining power is displayed as 8%, 0.8×8%=6.4%, then the actual power of the current power battery is 6.4%.

[0118] S205: Determine a normal power consumption value for the vehicle to reach a target charging pile according to the distance parameter and the real-time energy consumption.

[0119] 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.

[0120] 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 remaining power, to prompt the user of the power consumption of the current vehicle when it reaches the target charging station.

[0121] For example, if the current real-time energy consumption is 0.15 degrees per kilometer and the distance parameter is 3 kilometers, the current power consumption of the vehicle for 3 kilometers is about 0.5%, that is, the normal power consumption value is 0.5%.

[0122] S206: According to the battery health status, correct the normal power consumption value to obtain a first power consumption.

[0123] It can be understood that the normal power consumption value currently obtained is the power value displayed by the vehicle display device. This power consumption value is determined based on the remaining power displayed by the current vehicle. It is inconsistent with the actual power, and the normal power consumption value is higher than the actual power consumption value of the power battery.

[0124] According to the battery health of the power battery, the normal power consumption value is corrected; the correction method includes: multiplying the battery health and the normal power consumption value, and the product of the two is the first power loss.

[0125] For example, if the current battery health of the power battery is 0.8, 0.8×0.5%=0.4%, then the actual power consumption value of the current vehicle when arriving at the target charging pile should be 0.4%, that is, the first power loss is 0.4%.

[0126] S207: Taking the difference between the actual remaining power and the first power loss as the estimated remaining power of the vehicle.

[0127] Among them, the estimated remaining power is used to indicate the actual remaining power of the current vehicle after it reaches the target charging station.

[0128] The difference between the actual remaining power and the first power loss is taken as the estimated remaining power of the current vehicle, that is, the actual energy remaining in the power battery after the vehicle reaches the target charging pile.

[0129] For example, if the actual remaining power is 8%, 8% - 0.4% = 7.6%, then the estimated remaining power is 7.6%.

[0130] S208: Obtaining a driving range threshold of the vehicle.

[0131] 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 20 kilometers, for example.

[0132] 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.

[0133] The 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.

[0134] S209: Determine the driving range power of the vehicle according to the driving range threshold and the real-time energy consumption.

[0135] Based on the current power consumption of the vehicle per kilometer and the shortest mileage that the vehicle is currently set to travel when it needs to be charged, the two are multiplied together. The product is the actual amount of electricity consumed when the vehicle travels the mileage corresponding to the cruising range threshold, and the actual amount of electricity consumed is the current vehicle's cruising range power.

[0136] 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.

[0137] S210: Determine a remaining power threshold of the vehicle according to the actual total power and the driving range power.

[0138] Among them, the remaining power threshold is used to indicate the proportion of the driving range power in the actual total power.

[0139] 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.

[0140] For example, if the current real-time energy consumption is 0.15 kWh / km, and it is necessary to ensure that the vehicle can travel at least 20 km when the battery is low, then 0.15×20=3 kWh; when the battery health level is 0.8, the current vehicle power battery actually requires 84 kWh to be fully charged. At this time, 3÷84×100%≈3.6%, which means that the power consumption to ensure that the current vehicle can travel at least 20 km is 3 kWh, and the corresponding power consumption accounts for 3.6% of the actual total power, that is, the current vehicle's remaining power threshold is 3.6%.

[0141] S211: Determine whether the estimated remaining power is less than the remaining power threshold of the vehicle; if so, execute step S212; if not, execute step S213.

[0142] The purpose of this step of judging whether the estimated remaining power is less than the remaining power threshold of the vehicle is to determine the on / off status of the battery thermal management function.

[0143] If the estimated remaining power is less than the current 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 vehicle's remaining power is insufficient to guarantee the normal implementation of the user's current driving plan. At this time, the battery thermal management function of the vehicle is controlled to be in a closed state, reducing the energy consumption of the vehicle during driving and ensuring that the user can safely reach the target charging pile and charge.

[0144] If the estimated remaining power is not less than the remaining power threshold of the current vehicle, it means that the remaining power of the current power battery is sufficient to support the vehicle to travel to the target charging pile at the current energy consumption, that is, the remaining power of the current vehicle is sufficient. At this time, the battery thermal management function of the vehicle is controlled to be in the on state, so that the vehicle maintains an appropriate charging power when it reaches the target charging pile, thereby improving the power of the current vehicle.

[0145] For example, if the actual remaining power is 8%, 8% - 0.4% = 7.6%, then the estimated remaining power is 7.6%, and 7.6% > 3.6%, then 7.6% of power can support the vehicle to travel at least 20 kilometers after arriving at the target charging station. At this time, the battery thermal management function of the current vehicle is controlled to be in the on state; if the actual remaining power is 2%, 2% - 0.4% = 1.6%, and 1.6% < 3.6%, then 1.6% of power cannot guarantee that the vehicle can travel another 20 kilometers. At this time, the battery thermal management function of the current vehicle is controlled to be in the off state.

[0146] S212: Controlling the battery thermal management function of the vehicle to be in an off state.

[0147] S213: Controlling the battery thermal management function of the vehicle to be in an on state.

[0148] The control method of battery thermal management provided in the present embodiment obtains the battery loss parameter of the vehicle, the displayed remaining power of the power battery, the real-time energy consumption of the vehicle and the distance parameter; corrects the standard total power of the power battery according to the battery loss parameter to obtain the actual total power of the power battery; then determines the health of the vehicle battery according to the standard total power and the actual total power, thereby obtaining the current actual power of the vehicle; determines the normal power consumption value of the vehicle when it reaches the target charging pile according to the distance parameter and the real-time energy consumption, and corrects the normal power consumption value according to the current battery health of the vehicle to obtain the first power loss; uses the difference between the actual remaining power and the first power loss as the estimated remaining power of the current vehicle; obtains the driving range threshold of the current vehicle, and determines the driving range power of the current vehicle according to the driving range threshold and the real-time energy consumption; determines the remaining power threshold of the current vehicle according to the actual total power and the driving range power; determines whether the estimated remaining power is less than the remaining power threshold of the vehicle; and controls the on / off of the battery thermal management function of the current vehicle according to the judgment result. This method can not only more accurately determine whether the power battery is thermally managed, but also ensure that the vehicle arrives at the charging pile for charging stably, reducing the risk of high-power charging of the power battery at low temperatures, and improving the user's car experience in winter.

[0149] Figure 3 This is a schematic diagram of the structure of the battery thermal management control device provided in this application. Figure 3 As shown, the present application provides a battery thermal management control device, the battery thermal management control device 300 includes:

[0150] The acquisition module 301 is used to obtain the vehicle's operating parameters and distance parameters, wherein the operating parameters include: the vehicle's battery loss parameters, the displayed remaining power of the power battery, and the vehicle's real-time energy consumption, and the distance parameters are used to indicate the driving distance between the vehicle and the target charging pile.

[0151] The correction module 302 is used to correct the displayed remaining power according to the battery loss parameter to obtain the actual remaining power.

[0152] The determination module 303 is used to determine a first power consumption of the vehicle when it reaches the target charging pile according to the distance parameter and the real-time energy consumption.

[0153] The control module 304 is used to control the activation and deactivation of the battery thermal management function of the vehicle according to the first power loss and the actual remaining power.

[0154] Optionally, the correction module 302 is further used to correct the standard total power of the power battery according to the battery loss parameter to obtain the actual total power of the power battery.

[0155] The determination module 303 is further configured to determine the battery health of the vehicle according to the standard total power and the actual total power.

[0156] The determination module 303 is further configured to determine the actual remaining power according to the battery health and the displayed remaining power.

[0157] 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 parameter and the real-time energy consumption.

[0158] The correction module 302 is further configured to correct the normal power consumption value according to the battery health status to obtain the first power loss.

[0159] Optionally, the determination module 303 is further configured to use the difference between the actual remaining power and the first power loss as the estimated remaining power of the vehicle.

[0160] The battery thermal management control device further includes: a judgment module 305 .

[0161] The determination module 305 is used to determine whether the estimated remaining power is less than a remaining power threshold of the vehicle.

[0162] The control module 304 is further configured to control the battery thermal management function of the vehicle to be in a closed state when the estimated remaining power is less than a remaining power threshold of the vehicle.

[0163] The control module 304 is further configured to control a battery thermal management function of the vehicle to be in an on state when the estimated remaining power is not less than a remaining power threshold of the vehicle.

[0164] Optionally, the acquisition module 301 is further used to obtain a driving range threshold of the vehicle.

[0165] 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.

[0166] 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.

[0167] Optionally, the acquisition module 301 is specifically used to obtain road conditions within a preset range and information of multiple charging stations, wherein the charging station information includes: distance information, the number of idle charging piles, and maximum charging power.

[0168] The determination module 303 is further used to determine a target charging station based on the road conditions, the distance information corresponding to each charging station, the number of idle charging piles at each charging station, and the maximum charging power corresponding to each charging station. The target charging station is a charging station that has idle charging piles, a maximum charging power that matches the charging power of the vehicle, and is the closest.

[0169] The determination module 303 is further configured to use any one of the at least one idle charging pile of the target charging station as the target charging pile, and use the distance information corresponding to the target charging station in the distance information as the distance parameter.

[0170] Figure 4 This is a schematic diagram of the structure of the battery thermal management control device provided in this application. Figure 4 As shown, the present application provides a battery thermal management control device, and the battery thermal management control device 400 includes: a receiver 401, a transmitter 402, a processor 403 and a memory 404.

[0171] Receiver 401, for receiving instructions and data;

[0172] A transmitter 402, used for sending instructions and data;

[0173] Memory 404, for storing computer-executable instructions;

[0174] 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 thermal management control method in the above embodiment. For details, please refer to the relevant description in the above battery thermal management control method embodiment.

[0175] Optionally, the memory 404 may be independent or integrated with the processor 403 .

[0176] When the memory 404 is independently provided, the electronic device further includes a bus for connecting the memory 404 and the processor 403 .

[0177] 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, a battery thermal management control method as executed by the battery thermal management control device described above is implemented.

[0178] 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.

[0179] 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.

[0180] 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 control method for battery thermal management, characterized in that: The method comprises: Acquire the operating parameters and distance parameters of the vehicle, wherein the operating parameters include: the battery loss parameter of the vehicle, the displayed remaining power of the power battery, and the real-time energy consumption of the vehicle, and the distance parameter is used to indicate the driving distance between the vehicle and the target charging pile; According to the battery loss parameter, the displayed remaining power is corrected to obtain the actual remaining power; Determine, according to the distance parameter and the real-time energy consumption, a first power consumption of the vehicle when arriving at the target charging pile; According to the first power loss and the actual remaining power, the battery thermal management function of the vehicle is controlled to be turned on and off.

2. The method according to claim 1, characterized in that The correcting the displayed remaining power according to the battery loss parameter to obtain the actual remaining power includes: According to the battery loss parameter, the standard total power of the power battery is corrected to obtain the actual total power of the power battery; Determining a battery health level of the vehicle according to the standard total power and the actual total power; The actual remaining power is determined according to the battery health and the displayed remaining power.

3. The method according to claim 2, characterized in that The determining, according to the distance parameter and the real-time energy consumption, a first power consumption of the vehicle when reaching the target charging pile comprises: Determine a normal power consumption value of the vehicle when it reaches a target charging pile according to the distance parameter and the real-time energy consumption; The normal power consumption value is corrected according to the battery health to obtain the first power loss.

4. The method according to claim 2 or 3, characterized in that: The controlling the on / off of the battery thermal management function of the vehicle according to the first power loss and the actual remaining power includes: taking the difference between the actual remaining power and the first power loss as the estimated remaining power of the vehicle; Determining whether the estimated remaining power is less than a remaining power threshold of the vehicle; When the estimated remaining power is less than a remaining power threshold of the vehicle, controlling a battery thermal management function of the vehicle to be in a closed state; When the estimated remaining power is not less than a remaining power threshold of the vehicle, a battery thermal management function of the vehicle is controlled to be in an on state.

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 1, characterized in that The obtaining of distance parameters includes: Obtaining road conditions and multiple charging station information within a preset range, wherein the charging station information includes: distance information, number of idle charging piles, and maximum charging power; Determine a target charging station according to the road condition, the distance information corresponding to each charging station, the number of idle charging piles at each charging station, and the maximum charging power corresponding to each charging station, wherein the target charging station is a charging station with idle charging piles, a maximum charging power that matches the charging power of the vehicle, and a closest distance; Any one of the at least one idle charging pile of the target charging station is used as the target charging pile, and the distance information corresponding to the target charging station in the distance information is used as the distance parameter.

7. A battery thermal management control device, characterized in that: The device comprises: An acquisition module, used to acquire operating parameters and distance parameters of the vehicle, wherein the operating parameters include: a battery loss parameter of the vehicle, a displayed remaining power of the power battery, and a real-time energy consumption of the vehicle, and the distance parameter is used to indicate a driving distance between the vehicle and a target charging pile; A correction module, used for correcting the displayed remaining power according to the battery loss parameter to obtain the actual remaining power; A determination module, configured to determine a first power consumption of the vehicle when it reaches the target charging pile according to the distance parameter and the real-time energy consumption; A control module is used to control the activation and deactivation of the battery thermal management function of the vehicle according to the first power loss and the actual remaining power.

8. The device according to claim 7, characterized in that The correction module is used to correct the standard total power of the power battery according to the battery loss parameter to obtain the actual total power of the power battery; The determination module is used to determine the battery health of the vehicle according to the standard total power and the actual total power; The actual remaining power is determined according to the battery health and the displayed remaining power.

9. A battery thermal management 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 thermal management control method according to any one of claims 1 to 6.

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 thermal management control method according to any one of claims 1 to 6.

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