Battery heat preservation method and device, automobile and storage medium

Abstract

The application relates to a battery heat preservation method and device, an automobile and a storage medium. The battery heat preservation method comprises the following steps: in the case that it is detected that a battery heating function is started, at least one of obtained first information, current battery power, estimated residual battery power and second information is used to determine a heating mode of the battery; wherein the heating mode is a charging heating mode or a self-heating mode, the first information represents whether a charging port of the automobile is inserted into a charging gun, the residual battery power refers to battery power remaining after the battery is heated for a first time by using the current battery power in advance, the second information represents whether there is a charging station that can be arrived at by the automobile, the first time is obtained based on a current environment temperature, a minimum temperature of the environment in a future period, a current battery temperature prediction and a target battery temperature; a heating cost corresponding to the heating mode is determined, and the heating mode and the heating cost are output.

Description

Technical Field

[0001] This invention relates to the field of automotive battery insulation, specifically to a battery insulation method and apparatus, an automobile, and a storage medium. Background Technology

[0002] To meet users' driving needs in low-temperature conditions, the vehicle's power battery must be able to operate normally in extreme climates. Ensuring the normal operation of the power battery is crucial for vehicles in low-temperature environments; therefore, implementing effective battery insulation measures is imperative. Based on this, developing a practical battery insulation strategy is particularly important. Summary of the Invention

[0003] One objective of this invention is to provide a battery heat preservation method that adjusts the battery heating method in real time according to the current condition of the vehicle; another objective is to provide a battery heat preservation device; a third objective is to provide a vehicle; and a fourth objective is to provide a computer-readable storage medium.

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

[0005] A battery heat preservation method, the battery heat preservation method comprising:

[0006] When the battery heating function is detected to be activated, the heating method of the battery is determined based on at least one of the following: first information, current battery level, estimated remaining battery level, and second information.

[0007] The heating method includes a charging heating method and / or a self-heating method. The first information indicates whether the charging port of the car is plugged into a charging gun. The remaining battery power refers to the remaining battery power after heating the battery for a first time using the current battery power. The second information indicates whether there is a charging station that the car can go to. The first 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] Based on the aforementioned technical means, the current status of the vehicle is determined by at least one of the first information, the current battery level, the estimated remaining battery level, and the second information, thereby adjusting the battery heating method in real time to achieve precise control of the battery.

[0010] Furthermore, determining the battery heating method based on at least one of the following: first information, current battery level, estimated remaining battery level, and second information, includes: when the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, and the current battery level is greater than or equal to a first battery level threshold, and the remaining battery level is less than a second battery level threshold, determining whether there is a charging station that the vehicle can reach based on the remaining battery level; and when it is determined that there is a charging station that the vehicle can reach based on the remaining battery level, determining that the battery heating method is either a self-heating method followed by a charging heating method, or a charging heating method; wherein the second battery level threshold is less than the first battery level threshold.

[0011] Based on the aforementioned technical means, when the current battery level is greater than or equal to the first battery level threshold, although this indicates that the battery level is relatively sufficient, the system will still pre-assess whether the remaining battery level is sufficient to support the vehicle to reach the designated charging station after the self-heating operation. This is to prevent the battery from running out of power after self-heating, thus preventing the vehicle from continuing to drive to the charging station for charging.

[0012] Furthermore, the method also includes: if, based on the remaining battery power, it is determined that there is no charging station that the vehicle can reach, then 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 vehicle can reach based on the target battery capacity; wherein, for the self-heating method followed by the charging method, the target battery capacity is the remaining battery capacity; for the charging method alone, the target battery capacity is the current battery capacity; obtaining the time required to reach the candidate charging station based on the distance between the vehicle and the candidate charging station and a preset vehicle speed; obtaining the queuing time of the candidate charging station based on the historical traffic flow and historical charging time of the candidate charging station; obtaining a first heating time cost based on the time required to reach the candidate charging station, the queuing time, and the first time; obtaining a first heating cost based on the first time, heating output power, and unit price of electricity; and obtaining the heating cost of the at least one candidate charging station corresponding to the charging method based on the first heating cost and the first heating time cost of the at least one candidate charging station.

[0014] Based on the aforementioned technical means, the first heating time cost is determined based on the time required to travel to the candidate charging station, the queuing time, and the first time, that is, all time costs are considered in a comprehensive manner, thereby ensuring the accuracy of the calculated heating cost.

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

[0016] Furthermore, determining the heating cost corresponding to the heating method includes: when the heating method is a self-heating method, obtaining a first heating cost based on the first time, heating output power, and unit price of electricity; predicting the waiting time before heating based on the current ambient temperature and the current battery temperature; obtaining a 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] Based on the aforementioned technical means, the second heating time cost is determined based on the first time and the waiting time before heating, that is, all time costs are considered in a comprehensive manner, thereby ensuring the accuracy of the calculated heating cost.

[0018] Furthermore, 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; if a battery heating requirement exists, determining whether to heat the battery based on the current battery temperature; if it is determined that the battery should be heated, performing heating on the battery until a target battery temperature is reached based on the battery heating method; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature, and the battery charge level.

[0019] A battery insulation device, the battery insulation device comprising:

[0020] The processing unit is configured to determine the heating method of the battery based on at least one of the following when the battery heating function is detected to be activated: first information, current battery power, estimated remaining battery power, and second information.

[0021] The heating method is either a charging heating method or a self-heating method. The first information indicates whether the charging port of the car is plugged into a charging gun. The remaining battery power refers to the remaining battery power after the current battery power is used to heat the battery for a first time. The second information indicates whether there is a charging station that the car can go to. The first 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.

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

[0023] An automobile includes a processor and a memory configured to store a computer program capable of running on the processor, wherein the processor is configured to perform the steps of the aforementioned method when running the computer program.

[0024] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the aforementioned method.

[0025] A computer program product includes a computer program or instructions that, when executed by a processor, implement the steps of the aforementioned method.

[0026] The beneficial effects of this invention are:

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

[0028] (2) When the current battery charge is greater than or equal to the first charge threshold, although this indicates that the battery charge is relatively sufficient, the system will still pre-assess whether the remaining battery charge is sufficient to support the vehicle to reach the predetermined charging station after the self-heating operation. This is to prevent the battery charge from being depleted after self-heating, which would prevent the vehicle from continuing to drive to the charging station for charging. Attached Figure Description

[0029] Figure 1 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 1 ;

[0030] Figure 2 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 2 ;

[0031] Figure 3 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 3 ;

[0032] Figure 4 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 4 ;

[0033] Figure 5 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 5 ;

[0034] Figure 6 This is a schematic diagram illustrating the heating costs of different heating strategies for battery insulation in embodiments of the present invention.

[0035] Figure 7 This is a block diagram of battery heating in an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the battery insulation device structure in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the vehicle's component structure in an embodiment of the present invention. Detailed Implementation

[0038] To gain a more detailed understanding of the features and technical content of the embodiments of the present invention, 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 for reference and illustration only and are not intended 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 one of ordinary skill in the art to which this invention pertains. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention.

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

[0041] If the application documents contain similar descriptions such as "first / second", the following explanation shall be added: In the following description, the terms "first / second / third" are used only to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the 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 relationship between related 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] This invention provides a battery heat preservation method. Figure 1 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 1 ,like Figure 1 As shown, the battery insulation method includes the following steps:

[0044] S101: When the battery heating function is detected to be activated, the heating method of the battery is determined based on at least one of the following: first information, current battery level, estimated remaining battery level, and second information.

[0045] The heating method includes charging heating and / or self-heating. The first information indicates whether the charging port of the car is plugged into the charging gun. The remaining battery power refers to the remaining battery power after the current battery power is used to heat the battery for a first time. The second information indicates whether there is a charging station that the car can go to. The first 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 this embodiment of the invention, the user activates the battery heating function via button press or voice command. Based on this, upon detecting that the battery heating function has been activated, the battery heating method is determined based on at least one combination of first information, current battery level, estimated remaining battery level, and second information.

[0047] In this embodiment of the invention, the estimated remaining battery power refers to the battery power remaining after a pre-calculated heating time using the current battery power. Specifically, the remaining battery power is obtained by subtracting the product of the first time and the heating output power from the current battery power. The first time is the heating time.

[0048] For example, multiple sets of data are collected, 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 organizing and analyzing this experimental data, a correspondence is established between the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, the target battery temperature, and the heating time. Based on this, given the current ambient temperature, the lowest ambient temperature in the future period, the current battery temperature, and the target battery temperature, these can be substituted into this correspondence to obtain the estimated heating time of the battery. The future period can be within the next 72 hours.

[0049] The target battery temperature can be obtained directly from the battery's parameter table.

[0050] Alternatively, it can be predicted based on the current ambient temperature, current battery temperature, and current battery charge. For example, multiple sets of data are collected, including the current ambient temperature, current battery temperature, current battery charge, and target battery temperature. By organizing and analyzing this experimental data, a correspondence between the current ambient temperature, current battery temperature, current battery charge, and target battery temperature is established. Based on this, given the current ambient temperature, current battery temperature, and current battery charge, these values ​​can be plugged into this correspondence to determine the battery temperature that 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 heating cost.

[0052] In this embodiment of the invention, the current status of the vehicle is determined based on at least one of the first information, the current battery level, the estimated remaining battery level, and the second information, thereby adjusting the battery heating method in real time to achieve precise control of the battery.

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

[0054] S201: If the charging port of the vehicle is not plugged in, 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 this embodiment of the invention, when the current battery level is greater than or equal to a first battery level threshold, although this indicates sufficient battery power, the system will still pre-assess whether, after self-heating, the remaining battery level is less than a second battery level threshold. The system will then further assess whether the remaining battery level is sufficient to allow the vehicle to reach the designated charging station. This is to prevent the battery from running out of power after self-heating, thus preventing the vehicle from continuing to drive to the charging station for charging. Specifically, during the self-heating operation, the system first predicts the first heating time based on the current ambient temperature, the lowest ambient temperature in the future, the current battery temperature, and the target battery temperature, and then completes the heating operation within the predicted first time. For example, the first battery level threshold can be 50%, and the second battery level threshold can be 10%.

[0056] In this embodiment of the invention, the drivable distance is obtained based on the remaining battery power and the vehicle's energy consumption rate (e.g., energy consumption per kilometer). Further, it is determined whether there is a charging station that the vehicle can reach within the drivable distance range. If there is a charging station within the drivable distance range, it indicates that the battery can be preheated before driving to the charging station for charging, or the vehicle can drive to the charging station from the beginning to preheat and charge the battery. The specific heating method used can be determined based on heating costs. If there is no charging station within the drivable distance range, to avoid insufficient battery power after preheating, preventing the vehicle from reaching a charging station for charging, the vehicle can drive to a charging station from the beginning to preheat and charge the battery. The number of charging stations is at least one.

[0057] S202: If it is determined that there is a charging station that the car can go to based on the remaining battery power, the heating method of the battery is determined to be either self-heating followed by charging heating or charging heating; wherein the second power threshold is less than the first power threshold.

[0058] S203: If, based on the remaining battery charge, it is determined that there is no charging station that the vehicle can reach, the battery heating method is determined to be the charging heating method.

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

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

[0061] In this embodiment of the invention, if it is determined that there are charging stations that the vehicle can reach based on the remaining battery power, and if the heating method is a self-heating followed by charging heating, then the drivable distance is obtained based on the remaining battery power and the vehicle's energy consumption rate (e.g., energy consumption per kilometer). Based on this drivable distance range, at least one candidate charging station that the vehicle can reach is then determined. If the heating method is charging heating, then the drivable distance is obtained based on the current battery power and the vehicle's energy consumption rate (e.g., energy consumption per kilometer). Based on this drivable distance range, at least one candidate charging station that the vehicle can reach is then determined.

[0062] S302: Based on the distance between the vehicle and the selected charging station and the preset vehicle speed, the time required to reach the selected charging station is obtained.

[0063] Here, the time required to reach each candidate charging station is calculated based on the ratio of the distance between the car and each candidate charging station to the preset speed. The preset speed can be understood as the car's historical average speed.

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

[0065] Here, the queuing time for the candidate charging stations is calculated using an algorithm trained on the historical traffic flow and historical charging time of the candidate charging stations.

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

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

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

[0069] Here, the heating power consumption is obtained based on the ratio of heating output power to the first time. 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 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 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: When the heating method is self-heating, the first heating cost is obtained based on the first time, heating output power and electricity unit price.

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

[0075] S402: Predicts the waiting time before heating based on the current ambient temperature and current battery temperature.

[0076] The system pre-established a correspondence between the current ambient temperature, the current battery temperature, and the waiting time before heating. When the current ambient temperature and the current battery temperature are collected, they are substituted into this correspondence to predict the waiting time before heating.

[0077] S403: Based on the first time and the waiting time, obtain the second heating time cost.

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

[0079] S404: Based on the first heating cost and the second heating time cost, obtain the heating cost corresponding to the self-heating method.

[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 the second heating time cost is multiplied by the second weight to obtain the heating cost corresponding to the self-heating method.

[0081] Based on this, when the heating method is self-heating followed by charging heating, the heating cost corresponding to the self-heating method is calculated, as well as the heating cost of at least one candidate charging station that the car can go to is calculated. Then, the heating cost corresponding to the self-heating method is added to the heating cost of at least one candidate charging station 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] When the heating method is charging heating, the heating cost of at least one candidate charging station that the car can go to is calculated and output, and the target charging station corresponding to the minimum heating cost can be further recommended.

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

[0084] If the first information indicates that the charging port of the car is not plugged in with a charging gun, 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, then the heating method of the battery is determined to be a self-heating method.

[0085] In this embodiment of the invention, if the charging port of the vehicle is not plugged in with a charging gun, 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, it indicates that the battery power is sufficient, and the battery heating method is determined to be a self-heating method.

[0086] Alternatively, if the first information indicates that the charging port of the vehicle is connected to a charging gun, the heating method of the battery is determined to be a charging heating method.

[0087] Alternatively, if the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, and the current battery power is less than a first power threshold, and the second information indicates that there is a charging station that the vehicle can go to, then the heating method of the battery is determined to be the charging heating method.

[0088] In this embodiment of the invention, if the first information indicates that the charging port of the car is not plugged in with a charging gun 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 indicates that the car battery power is insufficient and needs to go to a charging station for charging and heating. In this case, the heating method of the battery is determined to be the charging and heating method.

[0089] In all three cases, the heating cost corresponding to each heating method can be calculated and output based on the heating cost calculation methods for self-heating and charging heating methods mentioned 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 the future period, identify whether the vehicle has a battery heating requirement;

[0092] If there is a need to heat the battery, determine whether to heat the battery based on the current battery temperature;

[0093] If it is determined that the battery needs to be heated, the battery is heated until a target battery temperature is reached, based on the heating method of the battery; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature and the battery charge.

[0094] In this embodiment of the invention, a battery heating requirement for the vehicle is identified when the current ambient temperature is lower than or equal to a first temperature threshold, and / or the lowest ambient temperature in the future period is lower than or equal to a second temperature threshold. The first temperature threshold may be equal to the second temperature threshold, or the first temperature threshold may be greater than the second temperature threshold, or the first temperature threshold may be less than the second temperature threshold. Conversely, if the current ambient temperature is higher than the first temperature threshold, or the lowest ambient temperature in the future period is higher than the second temperature threshold, a battery heating requirement for the vehicle is identified.

[0095] In this embodiment of the invention, if the current battery temperature is lower than or equal to a third temperature threshold, it is determined that the battery needs to be heated. Conversely, if 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 this embodiment of the invention, a pre-established correspondence between the current ambient temperature, current battery temperature, and battery charge level, and the target battery temperature is constructed. When the current ambient temperature, current battery temperature, and battery charge level are collected, they are substituted into this correspondence to obtain the corresponding target battery temperature, i.e., the battery temperature under normal operating conditions.

[0097] Based on the above embodiments, the present invention specifically illustrates a battery heat preservation method. Figure 5 This is a flowchart illustrating the battery heat preservation method in an embodiment of the present invention. Figure 5 ,like Figure 5 As shown, the battery insulation method includes the following steps:

[0098] S501: Check if the battery heating function is activated.

[0099] If the battery heating function is detected to be activated, execute S502; if the battery heating function is detected not to be activated, execute S501.

[0100] S502: Is the charging gun plugged into the car's charging port?

[0101] If the charging gun is inserted, execute S503; if the charging gun is not inserted, execute S505.

[0102] S503: Predicts the first time the battery will heat up.

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

[0104] Specifically, based on the first time, heating output power, and unit price of electricity, the first heating cost is obtained; based on the current ambient temperature and 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: Is the current battery level greater than or equal to 50%?

[0106] If the current battery level is greater than or equal to 50%, execute S506; if the current battery level is less than 50%, execute S511.

[0107] S506: Predicts the first time the battery will heat up.

[0108] S507: Based on the current battery level, the first time, and the heating output power consumption, the remaining battery level is obtained.

[0109] S508: Is the remaining battery power 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 battery heating method is self-heating, determine the corresponding heating cost, and output it.

[0112] S510: Based on the remaining battery power, determine if there is a charging station that the car can reach.

[0113] If there is a charging station that the car can reach, execute S512; if there is no charging station that the car can reach, end the process, meaning heating cannot be performed.

[0114] S511: Based on the current battery charge, determine if there is a charging station that the car can reach.

[0115] If there is a charging station that the car can reach, execute S512; if there is no charging station that the car can reach, end the process, meaning heating cannot be performed.

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

[0117] The battery can also be heated by first heating itself and then by charging.

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

[0119] The target charging station is the charging station with the lowest heating cost.

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

[0121] When the battery heating method is charging heating, the time required to reach at least one candidate charging station, the queuing time, and the first time are used as inputs to the heating cost calculation module 60 for charging heating, resulting in the first heating time cost and the first heating expense cost corresponding to at least one candidate charging station. Specifically, the time required to reach 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, heating output power, and unit price of electricity, the first heating expense cost is obtained.

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

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

[0124] Based on the above embodiments, this invention provides a battery heating block diagram, such as... Figure 7 As shown, specifically:

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

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

[0127] Heating strategy decision module 72, used to execute Figure 5 The process for determining the heating method is shown below.

[0128] Heating cost estimation module 73 is used to perform Figure 6 The cost calculation process is shown below.

[0129] The heating execution module 74 determines, based on the current ambient temperature, that the vehicle has a battery heating requirement, and based on the current battery temperature, determines that battery heating is necessary. Then, based on the battery heating method, it executes the heating of the battery until the target battery temperature is reached.

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

[0131] The processing unit 801 is configured to determine the heating method of the battery based on at least one of the following when the battery heating function is detected to be activated: first information, current battery power, estimated remaining battery power, and second information.

[0132] The heating method is either a charging heating method or a self-heating method. The first information indicates whether the charging port of the car is plugged into a charging gun. The remaining battery power refers to the remaining battery power after heating the battery for a first time using the current battery power. The second information indicates whether there is a charging station within a preset distance range of the car. The first time is predicted based on the current ambient temperature, the lowest ambient temperature in the future period, and the lowest battery temperature in the 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 units here include Figure 7 The modules shown.

[0135] In some embodiments of the present invention, the processing unit 801 is further configured to determine, based on the remaining battery power, whether there is a charging station that the vehicle can go to when the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, 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.

[0136] If, based on the remaining battery power, it is determined that there is a charging station that the vehicle can reach, the heating method of the battery is determined to be either a self-heating method followed by 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 the target battery charge; wherein, for the self-heating method followed by the charging heating method, the target battery charge is the remaining battery charge; and for the charging heating method alone, the target battery charge is the current battery charge.

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

[0140] Based on the historical traffic flow and historical charging time of the candidate charging stations, the queuing time of the candidate charging stations is obtained;

[0141] The first heating time cost is obtained based on the time required to travel to the candidate charging station, the queuing time, and the first time.

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

[0143] 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 method is obtained.

[0144] 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 self-heating method when the first information indicates that the charging port of the car is not plugged in with a charging gun, 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.

[0145] Alternatively, if the first information indicates that the charging port of the vehicle is connected to a charging gun, the heating method of the battery is determined to be a charging heating method.

[0146] Alternatively, if the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, and the current battery power is less than a first power threshold, and the second information indicates that there is a charging station that the vehicle can go to, then the heating method of the battery is determined to be 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 a self-heating method, obtain a first heating cost based on the first time, heating output power and electricity unit price;

[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, the second heating time cost is obtained;

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

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

[0152] If there is a need to heat the battery, determine whether to heat the battery based on the current battery temperature;

[0153] If it is determined that the battery needs to be heated, the battery is heated until a target battery temperature is reached, based on the heating method of the battery; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature and the battery charge.

[0154] This invention also provides another type of automobile. Figure 9 This is a schematic diagram of the vehicle's component structure in an embodiment of the present invention, such as... Figure 9 As shown, the vehicle 90 includes: a processor 901 and a memory 902 configured to store computer programs capable of running on the processor;

[0155] The processor 901 is configured to execute the method steps in the foregoing embodiments when running a computer program.

[0156] Of course, in practical applications, such as Figure 9 As shown, the various components in the vehicle 90 are coupled together via a bus system 903. It can be understood that the bus system 903 is used to enable communication between these components. In addition to a data bus, the bus system 903 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 9 The general designated all buses as Bus System 903.

[0157] In practical applications, the aforementioned processor can be at least one of the following: Application-Specific Integrated Circuit (ASIC), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), controller, microcontroller, and microprocessor. It is understood that, for different devices, the electronic devices used to implement the functions of the aforementioned processor can also be other types, and this embodiment of the invention does not impose specific limitations.

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

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

[0160] Optionally, the computer-readable storage medium can be applied to any 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 the various methods of the embodiments of the present invention. For the sake of brevity, these will not be described in detail here.

[0161] In the several embodiments provided by this 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 units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or 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 can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

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

[0163] Furthermore, in the various embodiments of the present invention, all functional units can be integrated into one processing module, or each unit can be a separate unit, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in a combination of hardware and software functional units. Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented 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 of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

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

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

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

[0167] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A battery heat preservation method, characterized in that, The battery insulation method includes: When the battery heating function is detected to be activated, the heating method of the battery is determined based on at least one of the following: first information, current battery level, estimated remaining battery level, and second information. The heating method includes a charging heating method and / or a self-heating method. The first information indicates whether the charging port of the car is plugged into a charging gun. The remaining battery power refers to the remaining battery power after heating the battery for a first time using the current battery power. The second information indicates whether there is a charging station that the car can go to. The first 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. Determine the heating cost corresponding to the heating method, and output the heating method and the heating cost; The step of determining the battery heating method based on at least one of first information, current battery level, estimated remaining battery level, and second information includes: when the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, and the current battery level is greater than or equal to a first battery level threshold, and the remaining battery level is less than a second battery level threshold, determining whether there is a charging station that the vehicle can reach based on the remaining battery level; and when it is determined that there is a charging station that the vehicle can reach based on the remaining battery level, determining that the battery heating method is either a self-heating method followed by a charging heating method, or a charging heating method; wherein the second battery level threshold is less than the first battery level threshold. Determining the heating cost corresponding to the heating method includes: determining at least one candidate charging station that the vehicle can reach based on the target battery capacity; wherein, for the self-heating method followed by the charging method, the target battery capacity is the remaining battery capacity; for the charging method alone, the target battery capacity is the current battery capacity; obtaining the time required to reach the candidate charging station based on the distance between the vehicle and the candidate charging station and a preset vehicle speed; obtaining the queuing time of the candidate charging station based on the historical traffic flow and historical charging time of the candidate charging station; obtaining a first heating time cost based on the time required to reach the candidate charging station, the queuing time, and the first time; obtaining a first heating cost based on the first time, the heating output power, and the unit price of electricity; and obtaining the heating cost of the at least one candidate charging station corresponding to the charging method based on the first heating cost and the first heating time cost of the at least one candidate charging station.

2. The battery heat preservation method according to claim 1, characterized in that, The method further includes: If, based on the remaining battery power, it is determined that there is no charging station that the vehicle can reach, the heating method for the battery is determined to be a charging heating method.

3. The battery heat preservation method according to claim 1 or 2, characterized in that, The step of determining the heating method of the battery based on at least one of the following: first information, current battery level, estimated remaining battery level, and second information, includes: If the first information indicates that the charging port of the car is not plugged in with a charging gun, 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, then the heating method of the battery is determined to be a self-heating method. Alternatively, if the first information indicates that the charging port of the vehicle is connected to a charging gun, the heating method of the battery is determined to be a charging heating method. Alternatively, if the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, and the current battery power is less than a first power threshold, and the second information indicates that there is a charging station that the vehicle can go to, then the heating method of the battery is determined to be the charging heating method.

4. The battery heat preservation method according to claim 1 or 2, characterized in that, Determining the heating cost corresponding to the heating method includes: When the heating method is self-heating, the first heating cost is obtained based on the first time, heating output power, and electricity unit price. Based on the current ambient temperature and the current battery temperature, predict the waiting time before heating; 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 heating cost corresponding to the self-heating method is obtained.

5. The battery heat preservation method according to claim 1 or 2, characterized in that, The method further includes: Based on the current ambient temperature and / or the lowest ambient temperature in the future period, identify whether the vehicle has a battery heating requirement; If there is a need to heat the battery, determine whether to heat the battery based on the current battery temperature; If it is determined that the battery needs to be heated, the battery is heated until a target battery temperature is reached, based on the heating method of the battery; wherein the target battery temperature is predicted based on the current ambient temperature, the current battery temperature and the battery charge.

6. A battery heat preservation device, characterized in that, The battery insulation device includes: The processing unit is configured to determine the heating method of the battery based on at least one of the following when the battery heating function is detected to be activated: first information, current battery power, estimated remaining battery power, and second information. The heating method is either a charging heating method or a self-heating method. The first information indicates whether the charging port of the car is plugged into a charging gun. The remaining battery power refers to the remaining battery power after the current battery power is used to heat the battery for a first time. The second information indicates whether there is a charging station that the car can go to. The first 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. The processing unit is further configured to determine the heating cost corresponding to the heating method, and output the heating method and the heating cost; The processing unit is further configured to, when the first information indicates that the charging port of the vehicle is not plugged in with a charging gun, and the current battery level is greater than or equal to a first battery level threshold, and the remaining battery level is less than a second battery level threshold, determine, based on the remaining battery level, whether there is a charging station that the vehicle can reach; and, if it is determined, based on the remaining battery level, that there is a charging station that the vehicle can reach, determine whether the heating method of the battery is a self-heating method followed by a charging heating method, or a charging heating method; wherein the second battery level threshold is less than the first battery level threshold; The processing unit is further configured to determine at least one candidate charging station that the vehicle can reach based on the target battery charge level; wherein, for the self-heating method followed by the charging heating method, the target battery charge level is the remaining battery charge level; for the charging heating method alone, the target battery charge level is the current battery charge level; based on the distance between the vehicle and the candidate charging station and a preset vehicle speed, the time required to reach the candidate charging station is obtained; based on the historical traffic flow and historical charging time of the candidate charging station, the queuing time of the candidate charging station is obtained; based on the time required to reach the candidate charging station, the queuing time, and the first time, a first heating time cost is obtained; 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 method is obtained.

7. A car, characterized in that, The vehicle includes: a processor and a memory configured to store computer programs capable of running on the processor. Wherein, when the processor is configured to run the computer program, it performs the steps of the battery insulation method according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the battery insulation method according to any one of claims 1 to 5.

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