Battery heat preservation method and device, automobile and storage medium

Abstract

The invention relates to a battery heat preservation method and device, an automobile and a storage medium, and the battery heat preservation method comprises the steps that under the condition that it is detected that a battery heating function is started, the heating mode of a battery is determined on the basis of at least one of obtained first information, the current battery electric quantity, the estimated remaining battery electric quantity and second information; wherein the heating mode is a charging heating mode or a self-heating mode, the first information represents whether a charging gun is inserted into a charging port of the automobile or not, the remaining battery electric quantity refers to the remaining battery electric quantity assumed in advance after a battery is heated for the first time through the current battery electric quantity, and the second information represents whether a charging station where the automobile can go to exists or not; the first time is obtained based on the current environment temperature, the lowest environment temperature in the future time period, the current battery temperature prediction and the target battery temperature; and determining the heating cost corresponding to the heating mode, and outputting the heating mode and the heating cost.

Description

Technical Field

[0001] The present invention relates to the field of automotive battery thermal insulation, and particularly to a battery thermal insulation method and device, an automobile, and a storage medium. Background Art

[0002] In order to meet the driving needs of users under low-temperature conditions, it is necessary for the power battery of an automobile to ensure normal operation when in extreme climates. In view of the situation of the vehicle in a low-temperature environment, it is crucial to ensure the normal operation of the power battery. Therefore, it is imperative to implement effective thermal insulation measures for the battery. Based on this, it is particularly important to formulate a practical battery thermal insulation strategy. Summary of the Invention

[0003] One of the objectives of the present invention is to provide a battery thermal insulation method to adjust the heating method of the battery in real time according to the current situation of the automobile; the second objective is to provide a battery thermal insulation device; the third objective is to provide an automobile; and the fourth objective is to provide a computer-readable storage medium.

[0004] To achieve the above objectives, the technical solutions adopted by the present invention are as follows:

[0005] A battery thermal insulation method, the battery thermal insulation method comprising:

[0006] When it is detected that the battery heating function is started, based on at least one of the obtained first information, the current battery power, the estimated remaining battery power, and the second information, determine the heating method of the battery;

[0007] Wherein, the heating method includes a charging heating method and / or a self-heating method, the first information characterizes whether a charging gun is inserted into the charging port of the automobile, the remaining battery power refers to the battery power remaining after assuming that the current battery power is used to heat the battery for a first period of time, the second information characterizes whether there is a charging station that the automobile can go to, and the first period of time is predicted based on the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, and the target battery temperature;

[0008] Determine the heating cost corresponding to the heating method, and output the heating method and the heating cost.

[0009] According to the above technical means, based on at least one of the first information, the current battery power, the estimated remaining battery power, and the second information, clarify the current situation of the automobile, and then adjust the heating method of the battery in real time, so as to achieve precise control of the battery.

[0010] Furthermore, the method of determining a heating method for the battery based on obtaining at least one of the first information, the current battery power, the estimated remaining battery power and the second information includes: when the first information indicates that a charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to a first power threshold, and the remaining battery power is less than a second power threshold, determining whether there is a charging station that the vehicle can go to based on the remaining battery power; when it is determined that there is a charging station that the vehicle can go to based on the remaining battery power, determining whether the heating method for the battery is first a self-heating method and then a charging heating method, or a charging heating method; wherein the second power threshold is less than the first power threshold.

[0011] According to the above technical means, when the current battery power is greater than or equal to the first power threshold, although it indicates that the battery power is relatively sufficient, the system will still pre-evaluate whether the remaining battery power is sufficient to support the vehicle to reach the predetermined charging station after the self-heating operation. This is to prevent the battery power from running out after self-heating, resulting in the vehicle being unable to continue driving to the charging station for charging.

[0012] Furthermore, the method further includes: when it is determined based on the remaining battery power that there is no charging station that the car can go to, determining that the heating method of the battery is a charging heating method.

[0013] Further, determining the heating cost corresponding to the heating method includes: determining at least one candidate charging station that the car can go to based on the target battery power; wherein, for the self-heating method and then the charging heating method, the target battery power is the remaining battery power; for the charging heating method alone, the target battery power is the current battery power; based on the distance between the car and the candidate charging station and the preset vehicle speed, obtaining the time required to go to the candidate charging station; based on the historical traffic volume and historical charging time of the candidate charging station, obtaining the queuing time of the candidate charging station; based on the time required to go to the candidate charging station, the queuing time and the first time, obtaining a first heating time cost; based on the first time, the heating output power and the unit price of electricity, obtaining a first heating fee cost; based on the first heating fee cost and the first heating time cost of the at least one candidate charging station, obtaining the heating cost of the at least one candidate charging station corresponding to the charging heating method.

[0014] According to the above technical means, the first heating time cost is determined based on the time required to go to the selected charging station, the queuing time and the first time, that is, all time costs are fully considered to ensure the accuracy of the calculated heating cost.

[0015] Further, determining the heating method of the battery based on at least one of the obtained first information, the current battery power, the estimated remaining battery power, and the second information includes: when the first information indicates that the charging port of the vehicle is not plugged with a charging gun, and the current battery power is greater than or equal to the first power threshold, and the remaining battery power is greater than or equal to the second power threshold, determining the heating method of the battery as the self-heating method; or, when the first information indicates that the charging port of the vehicle is plugged with a charging gun, determining the heating method of the battery as the charging heating method; or, when the first information indicates that the charging port of the vehicle is not plugged with a charging gun, and the current battery power is less than the first power threshold, and the second information indicates whether there is a charging station that the vehicle can go to, determining the heating method of the battery as the charging heating method.

[0016] Further, determining the heating cost corresponding to the heating method includes: when the heating method is the self-heating method, obtaining the first heating cost based on the first time, the heating output power, and the unit price of electricity; predicting the waiting time before heating based on the current ambient temperature and the current battery temperature; obtaining the second heating time cost based on the first time and the waiting time; and obtaining the heating cost corresponding to the self-heating method based on the first heating cost and the second heating time cost.

[0017] According to the above technical means, the second heating time cost is determined based on the first time and the waiting time before heating, that is, all aspects of time costs are considered to ensure the accuracy of the calculated heating cost.

[0018] Further, the method further includes: identifying whether the vehicle has a battery heating requirement based on the current ambient temperature and / or the lowest ambient temperature in the future period; when there is a battery heating requirement, determining whether to heat the battery based on the current battery temperature; when it is determined to heat the battery, heating the battery based on the heating method of the battery until the target battery temperature is reached; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature, and the battery power.

[0019] A battery thermal insulation device, the battery thermal insulation device includes:

[0020] A processing unit, configured to determine the heating method of the battery based on at least one of the obtained first information, the current battery power, the estimated remaining battery power, and the second information when detecting that the battery heating function is started;

[0021] The heating mode is a charging heating mode or a self-heating mode, the first information indicates whether a charging gun is inserted into the charging port of the vehicle, the remaining battery power refers to the remaining battery power after the battery is heated for a first time using the current battery power, the second information indicates whether there is a charging station that the vehicle can go to, and the first time is predicted based on the current ambient temperature, the lowest temperature of the environment in a future period, the current battery temperature, and the target battery temperature;

[0022] The processing unit is further used to determine the heating cost corresponding to the heating method, and output the heating method and the heating cost.

[0023] A car comprises: a processor and a memory configured to store a computer program that can be run on the processor, wherein the processor is configured to execute the steps of the above method when running the computer program.

[0024] A computer-readable storage medium stores a computer program, which implements the steps of the above method when executed by a processor.

[0025] A computer program product comprises a computer program or instructions, wherein when the computer program or instructions are executed by a processor, the steps of the aforementioned method are implemented.

[0026] Beneficial effects of the present invention:

[0027] (1) The present invention determines the current condition of the vehicle based on the first information, the current battery power, the estimated remaining battery power and at least one of the second information, and then adjusts the battery heating method in real time, thereby achieving precise control of the battery;

[0028] (2) In the present invention, when the current battery power is greater than or equal to the first power threshold, although it indicates that the battery power is relatively sufficient, the system will still pre-evaluate whether the remaining battery power is sufficient to support the vehicle to reach the predetermined charging station after the self-heating operation. This is done to prevent the battery power from running out after self-heating, resulting in the vehicle being unable to continue driving to the charging station for charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The process diagram of the battery heat preservation method in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 2 The process diagram of the battery heat preservation method in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 3 The process diagram of the battery heat preservation method in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0032] Figure 4 Schematic diagram of the battery heat preservation method in the embodiment of the present invention Figure 4 ;

[0033] Figure 5 Schematic diagram of the battery heat preservation method in the embodiment of the present invention Figure 5 ;

[0034] Figure 6 Schematic diagram of the heating cost of different heating strategies for battery heat preservation in the embodiment of the present invention;

[0035] Figure 7 Battery heating block diagram in the embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the composition structure of the battery heat preservation device in the embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the composition structure of the vehicle in the embodiment of the present invention. Detailed implementation manners

[0038] In order to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and explanation purposes and are not used to limit the embodiments of the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein are only for the purpose of describing the present embodiments and are not intended to limit the present invention.

[0040] In the following description, references to "some embodiments", "the present embodiment", "this embodiment" and examples, etc., describe subsets of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0041] If similar descriptions such as "first / second" appear in the application documents, the following explanation is added. In the following description, the terms "first\second\third" are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence when allowed, so that the present embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0042] In this embodiment, the term "and / or" is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist simultaneously, and object B exists alone.

[0043] An embodiment of the present invention provides a battery heat preservation method. Figure 1 It is a schematic flow of the battery heat preservation method in the embodiment of the present invention. Figure 1 , such as Figure 1 shown, the battery heat preservation method includes the following steps:

[0044] S101: When it is detected that the battery heating function is started, based on at least one of the obtained first information, the current battery power, the estimated remaining battery power, and the second information, determine the heating method of the battery;

[0045] Among them, the heating method includes a charging heating method and / or a self-heating method. The first information characterizes whether a charging gun is inserted into the charging port of the vehicle. The remaining battery power refers to the remaining battery power after assuming that the current battery power is used to heat the battery for a first period of time. The second information characterizes whether there is a charging station that the vehicle can go to. The first period of time is predicted based on the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, and the target battery temperature.

[0046] In the embodiment of the present invention, the user starts the battery heating function by pressing a button or by voice. Based on this, when it is detected that the battery heating function is started, based on at least one combination of the first information, the current battery power, the estimated remaining battery power, and the second information, determine the heating method of the battery.

[0047] In the embodiment of the present invention, the estimated remaining battery power refers to the remaining battery power after assuming that the current battery power is used to heat the battery itself for a first period of time. Specifically, subtracting the product of the first period of time and the heating output power consumption from the current battery power gives the remaining battery power. The first period of time is the heating time.

[0048] Exemplarily, collect multiple sets of data, including the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, the target battery temperature, and the heating time. By sorting and analyzing these experimental data, establish the corresponding relationship between the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, and the target battery temperature, and the heating time. Based on this, when the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, and the target battery temperature are collected, they can be brought into this corresponding relationship to obtain the estimated heating time of the battery. Among them, the future period can be within the next seventy-two hours.

[0049] Among them, the target battery temperature can be directly obtained from the parameter table of the battery.

[0050] Alternatively, it can be predicted based on the current ambient temperature, the current battery temperature, and the current battery power. Exemplarily, multiple sets of data are collected, including the current ambient temperature, the current battery temperature, the current battery power, and the target battery temperature. By sorting and analyzing these experimental data, a corresponding relationship between the current ambient temperature, the current battery temperature, the current battery power, and the target battery temperature is established. Based on this, when the current ambient temperature, the current battery temperature, and the current battery power are collected, they can be substituted into this corresponding relationship to obtain the temperature to which the battery needs to be heated to the target battery temperature under the current environment.

[0051] S102: Determine the heating cost corresponding to the heating method, and output the heating method and the heating cost.

[0052] In the embodiments of the present invention, according to at least one of the first information, the current battery power, the estimated remaining battery power, and the second information, the current condition of the vehicle is clarified, and then the heating method of the battery is adjusted in real time, so as to achieve precise control of the battery.

[0053] In some embodiments of the present invention, the determining of the heating method of the battery based on obtaining at least one of the first information, the current battery power, the estimated remaining battery power, and the second information includes the following steps:

[0054] S201: When the first information indicates that the charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to the first power threshold, and the remaining battery power is less than the second power threshold, determine whether there is a charging station that the vehicle can go to based on the remaining battery power.

[0055] In the embodiments of the present invention, when the current battery power is greater than or equal to the first power threshold, although it indicates that the battery power is sufficient, the system will still pre-evaluate that if the remaining battery power is less than the second power threshold after the self-heating operation, the system will further evaluate whether the remaining battery power is sufficient to support the vehicle to reach the predetermined charging station. This is to prevent the situation that the battery power is exhausted after self-heating, resulting in the vehicle being unable to continue driving to the charging station for charging. Among them, when performing the self-heating operation, first predict the first time for battery heating based on the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, and the target battery temperature, and then complete the heating operation within the predicted first time. Exemplarily, the first power threshold can be fifty percent, and the second power threshold can be ten percent.

[0056] In the embodiments of the present invention, based on the remaining battery power and the energy consumption rate of the vehicle (such as the power consumption per kilometer), the available driving distance is obtained. Further, it is determined whether there is a charging station that the vehicle can go to within the available driving distance. When there is a charging station that the vehicle can go to within the available driving distance, it indicates that the battery can be pre-heated first and then driven to the charging station for charging, or the vehicle can be driven directly to the charging station to charge and heat the battery. Which heating method to use specifically can be determined in combination with the heating cost. When there is no charging station that the vehicle can go to within the available driving distance, to avoid insufficient battery power after self-heating and being unable to go to the charging station for charging, the vehicle can be driven directly to the charging station to charge and heat the battery. Among them, the number of charging stations is at least one.

[0057] S202: When it is determined based on the remaining battery power that there is a charging station that the vehicle can go to, determine that the heating method of the battery is the pre-self-heating method followed by the charging and heating method, or the charging and heating method; where the second power threshold is less than the first power threshold.

[0058] S203: When it is determined based on the remaining battery power that there is no charging station that the vehicle can go to, determine that the heating method of the battery is the charging and heating method.

[0059] In some embodiments of the present invention, the determination of the heating cost corresponding to the heating method includes the following steps:

[0060] S301: Based on the target battery power, determine at least one candidate charging station that the vehicle can go to; where, for the pre-self-heating method followed by the charging and heating method, the target battery power is the remaining battery power; for the charging and heating method alone, the target battery power is the current battery power.

[0061] In the embodiments of the present invention, when it is determined based on the remaining battery power that there is a charging station that the vehicle can go to, if the heating method is the pre-self-heating method followed by the charging and heating method, then based on the remaining battery power and the energy consumption rate of the vehicle (such as the power consumption per kilometer), obtain the available driving distance, and then based on the available driving distance range, determine at least one candidate charging station that the vehicle can go to. If the heating method is the charging and heating method, then based on the current battery power and the energy consumption rate of the vehicle (such as the power consumption per kilometer), obtain the available driving distance, and then based on the available driving distance range, determine at least one candidate charging station that the vehicle can go to.

[0062] S302: Based on the distance between the vehicle and the candidate charging station and the preset vehicle speed, obtain the time required to go to the candidate charging station.

[0063] Here, based on the ratio of the distance between the vehicle and each candidate charging station to the preset vehicle speed, the time required to travel to each candidate charging station is obtained. Among them, the preset vehicle speed can be understood as the historical average vehicle speed of the vehicle.

[0064] S303: Based on the historical traffic flow and historical charging time of the candidate charging station, obtain the queuing time of the candidate charging station.

[0065] Here, the queuing time of the candidate charging station is obtained through algorithm training according to the historical traffic flow and historical charging time of the candidate charging station.

[0066] S304: Based on the time required to travel to the candidate charging station, the queuing time, and the first time, obtain the first heating time cost.

[0067] Here, the time required to travel to the candidate charging station, the queuing time, and the first time are added together to obtain the first heating time cost.

[0068] S305: Based on the first time, the heating output power, and the unit price of electricity, obtain the first heating cost.

[0069] Here, based on the ratio of the heating output power to the first time, the heating power consumption is obtained, and then the heating power consumption is multiplied by the unit price of electricity to obtain the first heating cost.

[0070] S306: Based on the first heating cost and the first heating time cost of at least one candidate charging station, obtain the heating cost of at least one candidate charging station corresponding to the charging and heating method.

[0071] Here, the sum of the first heating cost and the first heating time cost of at least one candidate charging station is used to obtain the heating cost of at least one candidate charging station corresponding to the charging and heating method.

[0072] In some embodiments of the present invention, determining the heating cost corresponding to the heating method includes the following steps:

[0073] S401: In the case where the heating method is the self-heating method, based on the first time, the heating output power, and the unit price of electricity, obtain the first heating cost.

[0074] Here, the ratio of the heating output power to the first time is used to obtain the power consumption, and then the power consumption is multiplied by the unit price of electricity to obtain the first heating cost.

[0075] S402: Based on the current ambient temperature and the current battery temperature, predict the waiting time before heating.

[0076] Among them, a corresponding relationship between the current ambient temperature and the current battery temperature and the waiting time before heating is established in advance. When the current ambient temperature and the current battery temperature are collected, they are substituted into this corresponding relationship to predict the waiting time before heating.

[0077] S403: Obtain the second heating time cost based on the first time and the waiting time.

[0078] Here, the first time and the waiting time are added together to obtain the second heating time cost.

[0079] S404: Obtain the heating cost corresponding to the self-heating method based on the first heating cost and the second heating time cost.

[0080] Here, the first heating cost and the second heating time cost are directly added together to obtain the heating cost corresponding to the self-heating method. Alternatively, the first heating cost is multiplied by the first weight, and then added to the second heating time cost multiplied by the second weight to obtain the heating cost corresponding to the self-heating method.

[0081] Based on this, in the case where the heating method is first the self-heating method and then the charging heating method, calculate the heating cost corresponding to the self-heating method, and calculate the heating costs of at least one candidate charging station that the vehicle can go to. Then, add the heating cost corresponding to the self-heating method to the heating costs of at least one candidate charging station respectively to obtain at least one total heating cost and output it. Furthermore, the target charging station corresponding to the minimum total heating cost can be recommended.

[0082] In the case where the heating method is the charging heating method, calculate the heating costs of at least one candidate charging station that the vehicle can go to and output it. Furthermore, the target charging station corresponding to the minimum heating cost can be recommended.

[0083] In some embodiments of the present invention, the determining the heating method of the battery based on at least one of obtaining the first information, the current battery power, the estimated remaining battery power, and the second information further includes:

[0084] In the case where the first information indicates that the charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to the first power threshold, and the remaining battery power is greater than or equal to the second power threshold, determine that the heating method of the battery is the self-heating method;

[0085] In the embodiments of the present invention, in the case where the first information indicates that the charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to the first power threshold, and the remaining battery power is greater than or equal to the second power threshold, it indicates that the battery power is sufficient, and thus determine that the heating method of the battery is the self-heating method.

[0086] Alternatively, when the first information indicates that a charging gun is inserted into the charging port of the vehicle, determine that the heating mode of the battery is the charging heating mode;

[0087] Alternatively, when the first information indicates that a charging gun is not inserted into the charging port of the vehicle, the current battery power is less than the first power threshold, and the second information indicates whether there is a charging station that the vehicle can travel to, determine that the heating mode of the battery is the charging heating mode.

[0088] In an embodiment of the present invention, when the first information indicates that a charging gun is not inserted into the charging port of the vehicle, the current battery power is less than the first power threshold, and the second information indicates whether there is a charging station that the vehicle can travel to, it indicates that the vehicle battery power is insufficient and needs to go to the charging station for charging and heating, then determine that the heating mode of the battery is the charging heating mode.

[0089] For these three cases, the heating costs corresponding to different heating modes can be calculated and output respectively based on the calculation methods of the heating costs corresponding to the self-heating mode and the charging heating mode pointed out above.

[0090] In some embodiments of the present invention, the method further includes:

[0091] Based on the current ambient temperature and / or the lowest ambient temperature in a future period, identify whether the vehicle has a battery heating requirement;

[0092] When there is a battery heating requirement, determine whether to heat the battery based on the current battery temperature;

[0093] When it is determined to heat the battery, based on the heating mode of the battery, perform heating of the battery until the target battery temperature is reached; wherein, the target battery temperature is predicted based on the current ambient temperature, the current battery temperature, and the battery power.

[0094] In an embodiment of the present invention, when the current ambient temperature is lower than or equal to the first temperature threshold, and / or the lowest ambient temperature in a future period is lower than or equal to the second temperature threshold, it is identified that the vehicle has a battery heating requirement. Wherein, the first temperature threshold may be equal to the second temperature threshold, or the first temperature threshold is greater than the second temperature threshold, or the first temperature threshold is less than the second temperature threshold. Correspondingly, when the current ambient temperature is higher than the first temperature threshold, or the lowest ambient temperature in a future period is higher than the second temperature threshold, it is identified that the vehicle has no battery heating requirement.

[0095] In an embodiment of the present invention, when the current battery temperature is lower than or equal to the third temperature threshold, it is determined that the battery needs to be heated. Conversely, when the current battery temperature is higher than the third temperature threshold, it is determined that the battery does not need to be heated.

[0096] In an embodiment of the present invention, a corresponding relationship between the current ambient temperature, the current battery temperature, the battery power, and the target battery temperature is established in advance. When the current ambient temperature, the current battery temperature, and the battery power are collected, they are substituted into this corresponding relationship to obtain the corresponding target battery temperature, that is, the battery temperature under normal battery operation.

[0097] Based on the above embodiments, a specific example of the present invention is a battery heat preservation method. Figure 5 It is a schematic flow of the battery heat preservation method in an embodiment of the present invention. Figure 5 , as Figure 5 shown, the battery heat preservation method includes the following steps:

[0098] S501: Detect whether the battery heating function is started.

[0099] When it is detected that the battery heating function is started, S502 is executed; when it is detected that the battery heating function is not started, S501 is executed.

[0100] S502: Whether a charging gun is inserted into the charging port of the vehicle.

[0101] When the charging gun is inserted, S503 is executed; when the charging gun is not inserted, S505 is executed.

[0102] S503: Estimate the first time for battery heating.

[0103] S504: Determine that the battery heating method is the charging heating method, determine the corresponding heating cost and output it.

[0104] Specifically, based on the first time, the heating output power, and the unit price of electricity, the first heating cost is obtained; based on the current ambient temperature and the current battery temperature, the waiting time before heating is predicted; based on the first time and the waiting time, the second heating time cost is obtained; based on the first heating cost and the second heating time cost, the corresponding heating cost is obtained.

[0105] S505: Whether the current battery power is greater than or equal to 50%.

[0106] When the current battery power is greater than or equal to 50%, S506 is executed; when the current battery power is less than 50%, S511 is executed.

[0107] S506: Estimate the first time for battery heating.

[0108] S507: Obtain the remaining battery power based on the current battery power, the first time, and the heating output power consumption.

[0109] S508: Whether the remaining battery power is greater than or equal to 10%.

[0110] If the remaining battery power is greater than or equal to 10%, execute S509; if the remaining battery power is less than 10%, execute S510.

[0111] S509: Determine that the heating method of the battery is the self - heating method, determine the corresponding heating cost and output it.

[0112] S510: Based on the remaining battery power, determine whether there is a charging station that the vehicle can go to.

[0113] If there is a charging station that the vehicle can go to, execute S512; if there is no charging station that the vehicle can go to, end, that is, heating cannot be performed.

[0114] S511: Based on the current battery power, determine whether there is a charging station that the vehicle can go to.

[0115] If there is a charging station that the vehicle can go to, execute S512; if there is no charging station that the vehicle can go to, end, that is, heating cannot be performed.

[0116] S512: Determine that the heating method of the battery is the charging - heating method, determine the heating costs of at least one candidate charging station that the vehicle can go to and output them.

[0117] Among them, the heating method of the battery can also be the self - heating method first and then the charging - heating method.

[0118] S513: Determine and output the heating cost of the optimal target charging station.

[0119] The target charging station is the charging station corresponding to the minimum heating cost.

[0120] Based on the above embodiments, the present invention provides a heating cost schematic diagram of different heating strategies for battery thermal insulation, as Figure 6 shown, specifically:

[0121] When the heating method of the battery is the charging heating method, the time required to go to at least one candidate charging station, the queuing time, and the first time are used as the inputs of the heating cost calculation module 60 of the charging heating method, and the first heating time cost and the first heating cost corresponding to at least one candidate charging station are obtained. Specifically, the time required to go to at least one candidate charging station, the queuing time, and the first time are added together to obtain the first heating time cost corresponding to at least one candidate charging station. Based on the first time, the heating output power, and the unit price of electricity, the first heating cost is obtained.

[0122] Furthermore, the first heating time cost and the first heating cost corresponding to at least one candidate charging station are used as the inputs of the heating strategy decision module 61 to obtain the first heating time cost and the first heating cost of the target charging station.

[0123] When the heating method of the battery is the self-heating method, the first time, the current ambient temperature, and the current battery temperature are used as the inputs of the heating cost calculation module 62 of the self-heating method, and the first heating cost and the second heating time cost are obtained. Specifically, based on the first time, the heating output power, and the unit price of electricity, the first heating cost is obtained. Based on the current ambient temperature and the current battery temperature, the waiting time before heating is predicted; based on the sum of the first time and the waiting time, the second heating time cost is obtained.

[0124] Based on the above embodiments, an embodiment of the present invention provides a battery heating block diagram, as Figure 7 shown, specifically:

[0125] The target battery temperature calculation module 70 predicts the target battery temperature based on the current ambient temperature, the current battery temperature, and the battery power.

[0126] The heating time estimation module 71 predicts the first time based on the current ambient temperature, the lowest ambient temperature in the future time period, the current battery temperature, and the target battery temperature.

[0127] The heating strategy decision module 72 is used to execute the Figure 5 shown heating method determination process.

[0128] The heating cost estimation module 73 is used to execute the Figure 6 shown cost calculation process.

[0129] When the heating execution module 74 determines that the vehicle has a battery heating requirement based on the current ambient temperature and determines that the battery needs to be heated based on the current battery temperature, it executes the heating of the battery until the target battery temperature is reached based on the heating method of the battery

[0130] An embodiment of the present invention provides a battery thermal insulation device, Figure 8This is a schematic diagram of the composition structure of the battery thermal insulation device in an embodiment of the present invention. As Figure 8 shown, the battery thermal insulation device 80 includes:

[0131] A processing unit 801, configured to determine the heating method of the battery based on at least one of the obtained first information, the current battery power, the estimated remaining battery power, and the second information when detecting that the battery heating function is started;

[0132] Wherein, the heating method is a charging heating method or a self-heating method. The first information represents whether a charging gun is inserted into the charging port of the vehicle. The remaining battery power refers to the remaining battery power after heating the battery for a first period of time using the current battery power. The second information represents whether there is a charging station within a preset distance range of the vehicle. The first period of time is predicted based on the current ambient temperature, the lowest ambient temperature in the future period, and the lowest battery temperature in a preset period;

[0133] The processing unit 801 is further configured to determine the heating cost corresponding to the heating method and output the heating method and the heating cost.

[0134] The processing unit here includes Figure 7 each module shown.

[0135] In some embodiments of the present invention, the processing unit 801 is further configured to determine whether there is a charging station that the vehicle can go to based on the remaining battery power when the first information represents that the charging port of the vehicle is not inserted with a charging gun, the current battery power is greater than or equal to a first power threshold, and the remaining battery power is less than a second power threshold;

[0136] When it is determined based on the remaining battery power that there is a charging station that the vehicle can go to, determine that the heating method of the battery is a self-heating method first and then a charging heating method, or a charging heating method; wherein, the second power threshold is less than the first power threshold.

[0137] In some embodiments of the present invention, the processing unit 801 is further configured to determine that the heating method of the battery is a charging heating method when it is determined based on the remaining battery power that there is no charging station that the vehicle can go to.

[0138] In some embodiments of the present invention, the processing unit 801 is further configured to determine at least one candidate charging station that the vehicle can go to based on a target battery power; wherein, for the self-heating method first and then the charging heating method, the target battery power is the remaining battery power; for the charging heating method alone, the target battery power is the current battery power;

[0139] Based on the distance between the vehicle and the candidate charging station and the preset vehicle speed, obtain the time required to travel to the candidate charging station;

[0140] Based on the historical traffic flow and historical charging time of the candidate charging station, obtain the queuing time of the candidate charging station;

[0141] Based on the time required to travel to the candidate charging station, the queuing time, and the first time, obtain the first heating time cost;

[0142] Based on the first time, the heating output power, and the unit price of electricity, obtain the first heating cost;

[0143] Based on the first heating cost and the first heating time cost of the at least one candidate charging station, obtain the heating cost of the at least one candidate charging station corresponding to the charging heating method.

[0144] In some embodiments of the present invention, the processing unit 801 is further configured to, when the first information indicates that the charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to the first power threshold, and the remaining battery power is greater than or equal to the second power threshold, determine that the heating method of the battery is the self-heating method;

[0145] Alternatively, when the first information indicates that the charging gun is inserted into the charging port of the vehicle, determine that the heating method of the battery is the charging heating method;

[0146] Alternatively, when the first information indicates that the charging gun is not inserted into the charging port of the vehicle, and the current battery power is less than the first power threshold, and the second information indicates whether there is a charging station that the vehicle can travel to, determine that the heating method of the battery is the charging heating method.

[0147] In some embodiments of the present invention, the processing unit 801 is further configured to, when the heating method is the self-heating method, based on the first time, the heating output power, and the unit price of electricity, obtain the first heating cost;

[0148] Based on the current ambient temperature and the current battery temperature, predict the waiting time before heating;

[0149] Based on the first time and the waiting time, obtain the second heating time cost;

[0150] Based on the first heating cost and the second heating time cost, obtain the heating cost corresponding to the self-heating method.

[0151] In some embodiments of the present invention, the processing unit 801 is further configured to identify whether there is a battery heating requirement for the vehicle based on the current ambient temperature and / or the lowest ambient temperature within a future period;

[0152] In the case of a battery heating requirement, determine whether to heat the battery based on the current battery temperature;

[0153] In the case of determining to heat the battery, perform heating of the battery based on the heating method of the battery until a target battery temperature is reached; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature, and the battery power.

[0154] Embodiments of the present invention also provide another vehicle, Figure 9 which is a schematic diagram of the vehicle component structure in the embodiments of the present invention, as Figure 9 shown, the vehicle 90 includes: a processor 901 and a memory 902 configured to store a computer program that can run on the processor;

[0155] Wherein, when the processor 901 is configured to run the computer program, it executes the method steps in the foregoing embodiments.

[0156] Of course, in actual application, as Figure 9 shown, the various components in the vehicle 90 are coupled together through a bus system 903. It can be understood that the bus system 903 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 903 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 9 all kinds of buses are labeled as the bus system 903.

[0157] In actual application, the foregoing processor may be at least one of an application specific integrated circuit (ASIC), a digital signal processing device (DSPD), a programmable logic device (PLD), a field-programmable gate array (FPGA), a controller, a microcontroller, and a microprocessor. It can be understood that for different devices, the electronic devices for realizing the functions of the foregoing processor may also be others, and the embodiments of the present invention do not make specific limitations.

[0158] The above-mentioned memory may be a volatile memory, such as a random-access memory (RAM); or a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or a combination of the above types of memories, and provides instructions and data to the processor.

[0159] In an exemplary embodiment, the embodiment of the present invention further provides a computer-readable storage medium for storing a computer program.

[0160] Optionally, the computer-readable storage medium can be applied to any one of the methods in the embodiments of the present invention, and the computer program causes the computer to execute the corresponding processes implemented by the processor in each of the methods of the embodiments of the present invention. For the sake of brevity, it will not be elaborated here.

[0161] In several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed with each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical, or other forms.

[0162] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0163] In addition, in each embodiment of the present invention, each functional unit can be entirely integrated into one processing module, or each unit can be separately regarded as one unit, or two or more units can be integrated into one unit; the above-mentioned integrated unit can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units. Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the aforementioned storage medium includes: various media such as removable storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0164] The methods disclosed in several method embodiments provided by the present invention can be arbitrarily combined without conflict to obtain new method embodiments.

[0165] The features disclosed in several product embodiments provided by the present invention can be arbitrarily combined without conflict to obtain new product embodiments.

[0166] The features disclosed in several method or device embodiments provided by the present invention can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0167] As mentioned above, the above are only specific implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A battery heat preservation method, characterized in that: The battery heat preservation method comprises: In the case where it is detected that the battery heating function is activated, determining a heating method for the battery based on obtaining at least one of the first information, the current battery power, the estimated remaining battery power, and the second information; The heating mode includes a charging heating mode and / or a self-heating mode, the first information indicates whether a charging gun is inserted into the charging port of the vehicle, the remaining battery power refers to the remaining battery power after the battery is heated for a first time using the current battery power, the second information indicates whether there is a charging station that the vehicle can go to, and the first time is predicted based on the current ambient temperature, the lowest ambient temperature in a future period, the current battery temperature, and the target battery temperature; A heating cost corresponding to the heating method is determined, and the heating method and the heating cost are output.

2. The battery heat preservation method according to claim 1, characterized in that: The determining of the heating method of the battery based on obtaining at least one of the first information, the current battery power, the estimated remaining battery power and the second information includes: When the first information indicates that a charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to a first power threshold, and the remaining battery power is less than a second power threshold, determining whether there is a charging station that the vehicle can go to based on the remaining battery power; When it is determined based on the remaining battery power that there is a charging station that the car can go to, the battery is heated by first self-heating and then charging heating, or by charging heating; wherein the second power threshold is less than the first power threshold.

3. The battery heat preservation method according to claim 2, characterized in that: The method further comprises: When it is determined based on the remaining battery power that there is no charging station to which the car can go, the battery heating method is determined to be a charging heating method.

4. The battery heat preservation method according to claim 2, characterized in that: The determining of the heating cost corresponding to the heating method includes: Based on the target battery power, determining at least one candidate charging station that the vehicle can go to; wherein, for the self-heating mode followed by the charging and heating mode, the target battery power is the remaining battery power; and for the charging and heating mode alone, the target battery power is the current battery power; Based on the distance between the vehicle and the selected charging station and a preset vehicle speed, obtaining the time required to travel to the selected charging station; Based on the historical vehicle flow and historical charging time of the to-be-selected charging station, the queuing time of the to-be-selected charging station is obtained; Obtaining a first heating time cost based on the time required to go to the selected charging station, the queuing time, and the first time; Based on the first time, the heating output power and the unit price of electricity, a first heating cost is obtained; Based on the first heating cost and the first heating time cost of the at least one candidate charging station, the heating cost of the at least one candidate charging station corresponding to the charging heating mode is obtained.

5. The battery heat preservation method according to any one of claims 1 to 4, characterized in that: The determining of the heating method of the battery based on obtaining at least one of the first information, the current battery power, the estimated remaining battery power and the second information includes: When the first information indicates that a charging gun is not inserted into the charging port of the vehicle, and the current battery power is greater than or equal to a first power threshold, and the remaining battery power is greater than or equal to a second power threshold, determining that the heating mode of the battery is a self-heating mode; Alternatively, when the first information indicates that a charging gun is inserted into the charging port of the vehicle, determining that the heating mode of the battery is a charging heating mode; Alternatively, when the first information indicates that a charging gun is not inserted into the charging port of the car, and the current battery power is less than a first power threshold, and the second information indicates whether there is a charging station that the car can go to, it is determined that the battery heating method is the charging heating method.

6. The battery heat preservation method according to any one of claims 1 to 4, characterized in that: The determining the heating cost corresponding to the heating method includes: In the case where the heating mode is a self-heating mode, a first heating cost is obtained based on the first time, the heating output power and the unit price of electricity; predicting a waiting time before heating based on the current ambient temperature and the current battery temperature; Based on the first time and the waiting time, obtain a second heating time cost; Based on the first heating fee cost and the second heating time cost, the heating cost corresponding to the self-heating method is obtained.

7. The battery heat preservation method according to any one of claims 1 to 4, characterized in that: The method further comprises: Based on the current ambient temperature and / or the lowest ambient temperature in a future period, identifying whether the vehicle needs to heat the battery; In the case where there is a battery heating demand, determining whether to heat the battery based on the current battery temperature; In the case of determining to heat the battery, heating the battery is performed based on the heating method of the battery until a target battery temperature is reached; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature and the battery power.

8. A battery heat preservation device, characterized in that: The battery heat preservation device comprises: a processing unit, configured to determine a heating method for the battery based on obtaining at least one of the first information, the current battery power, the estimated remaining battery power and the second information when detecting that the battery heating function is activated; The heating mode is a charging heating mode or a self-heating mode, the first information indicates whether a charging gun is inserted into the charging port of the vehicle, the remaining battery power refers to the remaining battery power after the battery is heated for a first time using the current battery power, the second information indicates whether there is a charging station that the vehicle can go to, and the first time is predicted based on the current ambient temperature, the lowest temperature of the environment in a future period, the current battery temperature, and the target battery temperature; The processing unit is further used to determine the heating cost corresponding to the heating method, and output the heating method and the heating cost.

9. A car, characterized in that: The vehicle comprises: a processor and a memory configured to store a computer program capable of running on the processor, Wherein, the processor is configured to execute the steps of the battery insulation method according to any one of claims 1 to 7 when running the computer program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the battery insulation method according to any one of claims 1 to 7 are implemented.

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