Heating control method of vehicle battery pack, electronic device, and storage medium

Abstract

The application relates to the technical field of battery pack heating, and discloses a heating control method of a vehicle battery pack, an electronic device and a storage medium. The method comprises the following steps: obtaining a historical pedal opening degree of an accelerator pedal of a vehicle in a historical period; the end time of the historical period is the current time, and the length of the historical period is less than a preset length; obtaining a target heating power and a target temperature range based on the historical pedal opening degree; the lowest temperature of the target temperature range is a first temperature, and the highest temperature is a second temperature; if the current cell temperature of the battery pack is lower than the first temperature, the battery pack is heated at the target heating power, and the heating of the battery pack is stopped when the current cell temperature reaches or is higher than the second temperature. Therefore, the heating power of the battery pack and the temperature range to be reached are determined according to the opening degree of the accelerator pedal, the actual heating demand of the battery pack is adapted, and the consumption of electric energy can be reduced.

Description

Technical Field

[0001] This application relates to the field of battery pack heating technology, specifically to a heating control method, electronic device, and storage medium for a vehicle battery pack. Background Technology

[0002] In new energy vehicles, the battery pack outputs electrical energy to the drive motor, which then consumes this energy to propel the vehicle and operate related accessories. In low-temperature environments, when the battery cells are at a low temperature, the battery pack's discharge capacity decreases. To ensure the battery pack's discharge capacity, a power-controlled temperature (PTC) heater is typically used to heat the battery pack; however, heating the battery pack consumes electrical energy.

[0003] In related technologies, the battery pack is heated as soon as the vehicle is connected to high voltage in low-temperature environments, and the heating power remains constant. This heating method consumes a significant amount of battery power and cannot adjust the heating power according to the vehicle's actual needs. Summary of the Invention

[0004] In view of the above problems, this application provides a heating control method, electronic device and storage medium for a vehicle battery pack, which determines the heating power of the battery pack and the temperature range to be reached by the opening of the accelerator pedal, adapts to the actual heating needs of the battery pack and can reduce the consumption of electrical energy.

[0005] The first aspect of this application provides a heating control method for a vehicle battery pack, comprising: acquiring the historical pedal opening of the vehicle's accelerator pedal during a historical time period; wherein the end time of the historical time period is the current time, and the duration of the historical time period is less than a preset duration; acquiring a target heating power and a target temperature range based on the historical pedal opening; wherein the lowest temperature of the target temperature range is a first temperature and the highest temperature is a second temperature; if the current cell temperature of the battery pack is lower than the first temperature, heating the battery pack with the target heating power, and stopping heating the battery pack when the current cell temperature reaches or exceeds the second temperature.

[0006] In some specific embodiments, before the step of obtaining the target heating power and target temperature range based on historical pedal opening, the method further includes: obtaining the road length of the remaining driving segment of the vehicle and the current cell temperature of the battery pack; the step of obtaining the target heating power and target temperature range based on historical pedal opening includes: obtaining a first heating power and a first temperature range based on historical pedal opening, and obtaining a second heating power and a second temperature range based on the road length and the current cell temperature; determining the target heating power based on the first heating power and the second heating power, and determining the target temperature range based on the first temperature range and the second temperature range.

[0007] In some specific embodiments, the steps of determining the target heating power based on the first heating power and the second heating power, and determining the target temperature range based on the first temperature range and the second temperature range, include: obtaining a first coefficient and a second coefficient based on historical pedal opening, road segment length, and current cell temperature; wherein, the combination of historical pedal opening, road segment length, and current cell temperature has a preset correspondence with the combination of the first coefficient and the second coefficient; the sum of the first product of the first heating power and the first coefficient, and the second product of the second heating power and the second coefficient is taken as the target heating power, and the overlapping range of the first temperature range and the second temperature range is taken as the target temperature range.

[0008] In some specific embodiments, the step of obtaining the first heating power and the first temperature range based on the historical pedal opening includes: if the historical pedal opening is within a first preset opening range, then obtaining the first power as the first heating power and the first range as the first temperature range; if the historical pedal opening is within a second preset opening range, then obtaining the second power as the first heating power and the second range as the first temperature range; wherein the opening of the first preset opening range is greater than the opening of the second preset opening range and the two do not overlap, the first power is greater than the second power, and the average value of the first range is greater than the average value of the second range.

[0009] In some specific embodiments, the step of obtaining the second heating power based on the road segment length and the current cell temperature includes: if the road segment length is within a first preset length range and the current cell temperature is within a first preset temperature range, then obtaining a third power as the second heating power; if the road segment length is within the first preset length range and the current cell temperature is within a second preset temperature range, then obtaining a fourth power as the second heating power; wherein the average value of the first preset temperature range is greater than the average value of the second preset temperature range and the two do not overlap, and the third power is less than the fourth power; if the road segment length is within the second preset length range and the current cell temperature is within the first preset temperature range, then obtaining a fifth power as the second heating power; wherein the average value of the first preset length range is greater than the average value of the second preset length range and the two do not overlap, and the third power is less than the fifth power.

[0010] In some specific embodiments, the step of obtaining a second temperature range based on the road segment length and the current cell temperature includes: if the road segment length is within a first preset length range and the current cell temperature is within a third preset temperature range, then the third range is obtained as the second temperature range; if the road segment length is within the first preset length range and the current cell temperature is within a fourth preset temperature range, then the fourth range is obtained as the second temperature range; wherein, the average value of the third preset temperature range is greater than the average value of the fourth preset temperature range and the two do not overlap, and the average value of the third range is greater than the average value of the fourth range.

[0011] In some specific embodiments, after obtaining the target heating power and target temperature range based on historical pedal opening, the process includes: obtaining the remaining driving length of the remaining driving segment of the vehicle; obtaining the corresponding preset maximum power according to the preset remaining driving length range in which the remaining driving length is located; wherein, the preset remaining driving length range and the preset maximum power have a corresponding relationship, and the preset driving length range with a larger average value corresponds to a larger preset maximum power; if the target heating power is greater than the preset maximum power, then the preset maximum power is used as the target heating power, and if the target heating power is less than or equal to the preset maximum power, then the target heating power remains unchanged.

[0012] In some specific embodiments, before the step of obtaining the historical pedal opening of the vehicle's accelerator pedal in a historical period, the method further includes: obtaining the required power consumption of the vehicle on the remaining driving segment based on the vehicle's navigation information, and obtaining the current remaining power of the battery pack; if the remaining power after subtracting the required power consumption from the current remaining power is less than the preset remaining power, then the step of obtaining the historical pedal opening of the vehicle's accelerator pedal in a historical period is performed.

[0013] A second aspect of this application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein the computer program, when executed by the processor, implements the heating control method described above.

[0014] A third aspect of this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the heating control method as described above.

[0015] The present application possesses at least the following beneficial technical effects: Based on the vehicle battery pack heating control method, electronic device, and storage medium provided in this application, the method includes: acquiring the historical pedal opening of the vehicle's accelerator pedal during a historical time period; wherein the end time of the historical time period is the current time, and the duration of the historical time period is less than a preset duration; acquiring a target heating power and a target temperature range based on the historical pedal opening; wherein the lowest temperature of the target temperature range is a first temperature and the highest temperature is a second temperature; if the current cell temperature of the battery pack is lower than the first temperature, the battery pack is heated with the target heating power, and heating of the battery pack is stopped when the current cell temperature is higher than the second temperature. Therefore, by determining the heating power of the battery pack and the desired temperature range through the opening of the accelerator pedal, the actual heating needs of the battery pack can be met, and energy consumption can be reduced.

[0016] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 This is a schematic flowchart of an embodiment of the vehicle battery pack heating control method provided in this application;

[0019] Figure 2 This is a schematic flowchart of another embodiment of the vehicle battery pack heating control method provided in this application;

[0020] Figure 3 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application;

[0021] Figure 4 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application;

[0022] Figure 5 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application;

[0023] Figure 6 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application;

[0024] Figure 7 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application;

[0025] Figure 8 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application;

[0026] Figure 9 This is a schematic diagram of the structural framework of an embodiment of the electronic device provided in this application;

[0027] Figure 10 This is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided in this application. Detailed Implementation

[0028] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited to the embodiments set forth herein. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0029] If the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, if the word "and / or" appears throughout the text, it means including three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0030] The first aspect of this application provides a heating control method for a vehicle battery pack. This method is applied to a new energy vehicle, which can use the electrical energy provided by the battery pack to enable the drive motor to work, thereby enabling the drive motor to drive the vehicle.

[0031] Figure 1 This is a schematic flowchart of an embodiment of the vehicle battery pack heating control method provided in this application. (In conjunction with...) Figure 1 This method includes the following steps:

[0032] S101: Obtain the historical pedal opening of the vehicle's accelerator pedal during a historical time period; wherein the end time of the historical time period is the current time, and the duration of the historical time period is less than the preset duration.

[0033] When the accelerator pedal is depressed, the drive motor provides greater power, resulting in better vehicle performance. Furthermore, the greater the degree to which the accelerator pedal is depressed, the greater the power output of the drive motor.

[0034] The preset duration can be set in advance, and it can be a relatively short duration, such as 1 minute. If the duration of a historical period is shorter than the preset duration, it indicates that the historical period is a shorter time segment; for example, the historical period could be set to 30 seconds. It should be understood that since the end time of the historical period is the current time, during the application of this method, the historical period will be continuously updated over time, while the duration of the historical period remains constant.

[0035] The accelerator pedal opening during a historical period is called the historical pedal opening. Since the historical period is relatively short and close to the current moment, the historical pedal opening actually reflects the opening state of the vehicle's accelerator pedal at the current moment.

[0036] The historical pedal opening can be the average opening obtained from all opening data within a historical period, or it can be the maximum opening corresponding to all opening data within a historical period. No specific restrictions are imposed here.

[0037] S102: Obtain the target heating power and target temperature range based on the historical pedal opening; wherein, the lowest temperature in the target temperature range is the first temperature and the highest temperature is the second temperature.

[0038] It should be understood that the accelerator pedal opening reflects the driving power output of the drive motor, and the higher the driving power of the drive motor, the higher the amount of electricity the battery pack needs to output per unit time. In summary, the historical pedal opening reflects the current accelerator pedal position, which in turn reflects the driving power requirement of the drive motor at that moment, the required discharge capacity of the battery pack, and ultimately, the requirements for the battery pack's discharge performance.

[0039] At low ambient temperatures, the battery pack's cell temperature is low, affecting the pack's discharge performance, specifically the amount of discharge per unit time. Heating the battery pack raises the cell temperature, significantly improving its discharge performance. Furthermore, higher heating power results in a faster rise in cell temperature and a more rapid increase in the pack's discharge capacity.

[0040] Based on the above, it can be seen that a larger historical pedal opening indicates a higher requirement for the battery pack's discharge performance. To ensure that the battery pack meets the corresponding discharge performance requirements, it is necessary to adjust the heating power of the battery pack and set a target temperature range, i.e., to set the temperature range that the battery pack needs to reach.

[0041] The system allows for pre-setting historical pedal opening degrees and corresponding target heating power and temperature ranges. Multiple non-overlapping opening ranges are preset, each corresponding to a different target heating power and temperature range. Opening ranges with higher average values ​​correspond to higher target heating power and higher average temperature within their respective target temperature ranges. In some applications, when the historical pedal opening degree is 0, the corresponding target heating power can be 0, meaning the battery pack is not heated when the historical pedal opening degree is 0.

[0042] The table below shows the correspondence between the opening range, target heating power, and target temperature range. In each row, from left to right, the opening range, target heating power, and target temperature range are respectively.

[0043]

[0044]

[0045] Based on this configuration, after obtaining the historical pedal opening, the corresponding target heating power and target temperature range can be obtained according to the opening range of the historical pedal opening. The target temperature range mentioned above is a left-closed, right-open interval. For example, the target temperature range of -10 to 5°C represents a temperature range greater than or equal to -10°C and less than 5°C. Furthermore, in subsequent embodiments, if multiple consecutive ranges are involved, each range can be a left-closed, right-open interval.

[0046] S103: If the current cell temperature of the battery pack is lower than the first temperature, the battery pack is heated with the target heating power, and the heating of the battery pack is stopped when the current cell temperature reaches or exceeds the second temperature.

[0047] The target temperature range is the temperature range that is greater than or equal to the first temperature and less than the second temperature. Since the historical pedal opening corresponds to the target temperature range, the current cell temperature needs to be within the target temperature range.

[0048] If the current cell temperature of the battery pack is lower than the first temperature, it indicates that the cell temperature is low and heating is required. The heating power is the target heating power. If the cell temperature is equal to or greater than the second temperature during the heating process, it means that the cell temperature has met the corresponding temperature requirements and the discharge capacity is sufficient. No further heating is needed, and heating of the battery pack should be stopped at this point.

[0049] In summary, by determining the target heating power and desired temperature range of the battery pack based on the historical accelerator pedal opening, this approach aligns with the battery pack's discharge capacity requirements corresponding to the historical pedal opening, thus adapting to the real-time heating needs of the battery pack. Therefore, compared to consistently heating at a constant power, this application can adjust the heating power based on the real-time heating requirements derived from the historical pedal opening, reducing energy consumption. Furthermore, when the historical pedal opening is 0, heating can be omitted, further reducing energy consumption.

[0050] Figure 2 This is a schematic flowchart of another embodiment of the vehicle battery pack heating control method provided in this application.

[0051] Combination Figure 2 In some specific embodiments, before the step of obtaining the target heating power and target temperature range based on the historical pedal opening, i.e. before step S102 above, the method further includes:

[0052] S201: Obtain the remaining driving distance of the vehicle and the current cell temperature of the battery pack.

[0053] The remaining distance traveled by the vehicle can be determined using the vehicle's navigation information. Furthermore, the length of this remaining distance may be constantly changing during the vehicle's journey. Additionally, the current cell temperature of the battery pack can be obtained in real time using designated sensors.

[0054] It should be understood that this step can be performed together with the above step S101. That is, when obtaining the historical pedal opening, the remaining driving segment length and the current cell temperature of the battery pack can be obtained, but this is not a limitation.

[0055] The step of obtaining the target heating power and target temperature range based on the historical pedal opening, i.e., step S102 above, includes:

[0056] S202: Obtain the first heating power and the first temperature range based on the historical pedal opening, and obtain the second heating power and the second temperature range based on the road length and the current cell temperature.

[0057] This embodiment no longer obtains the target heating power and target temperature range by relying solely on the historical pedal opening. Instead, it combines three factors—historical pedal opening, road segment length, and current cell temperature—to obtain intermediate data, and then uses this intermediate data to ultimately obtain the target heating power and target temperature range.

[0058] In this embodiment, a correspondence can be established between the historical pedal opening degree and the first heating power and the first temperature range, thereby enabling the acquisition of the corresponding first heating power and the first temperature range based on the historical pedal opening degree and the correspondence. Similarly, a correspondence can be established between the combination of the road segment length and the current cell temperature and the second heating power and the second temperature range, thereby enabling the acquisition of the corresponding second heating power and the second temperature range based on the combination of the road segment length and the current cell temperature and the correspondence.

[0059] S203: Determine the target heating power based on the first heating power and the second heating power, and determine the target temperature range based on the first temperature range and the second temperature range.

[0060] At this point, the first heating power and the second heating power are actually intermediate data, and further processing is needed to obtain the target heating power. Similarly, the first temperature range and the second temperature range are also intermediate data, and further processing is needed to obtain the target temperature range.

[0061] This embodiment does not impose specific limitations on the specific methods for determining the target heating power using the first heating power and the second heating power, or on the specific methods for determining the target temperature range using the first temperature range and the second temperature range. This embodiment emphasizes the method of obtaining intermediate data through multiple factors, and then using that intermediate data to determine the target heating power and the target temperature range.

[0062] Figure 3 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application.

[0063] Combination Figure 3 In some specific embodiments, the steps of determining the target heating power based on the first heating power and the second heating power, and determining the target temperature range based on the first temperature range and the second temperature range, i.e., the above-mentioned step S203, include:

[0064] S301: Obtain a first coefficient and a second coefficient based on the historical pedal opening, road segment length, and current cell temperature; wherein, the combination of the historical pedal opening, road segment length, and current cell temperature has a preset correspondence with the combination of the first coefficient and the second coefficient.

[0065] The above embodiments determine the target heating power by using the first heating power and the second heating power, and further restrictions are placed on the specific method therein.

[0066] It should be understood that the historical pedal opening determines the first heating power, while the road segment length and the current cell temperature determine the second heating power. Under different combinations of historical pedal opening, road segment length, and current cell temperature, the degree of influence of each factor on the target heating power generally varies. For example, in one combination, the historical pedal power may have the greatest impact on the target heating power, in which case the first heating power corresponding to the historical pedal power needs to be considered. In another combination, the road segment length and current cell power may have the greatest impact on the target heating power, in which case the corresponding second heating power needs to be considered. Therefore, different combinations of historical pedal opening, road segment length, and current cell temperature can be preset, and different combinations correspond to different combinations of the first and second coefficients, thus establishing a preset correspondence between the two combinations. In this case, the first and second coefficients actually represent the degree of influence of the first and second heating power on the target heating power, respectively.

[0067] S302: The sum of the first product of the first heating power and the first coefficient, and the second product of the second heating power and the second coefficient, is taken as the target heating power, and the overlapping range of the first temperature range and the second temperature range is taken as the target temperature range.

[0068] In summary, when the sum of the first product of the first heating power and the first coefficient, and the second product of the second heating power and the second coefficient is used as the target heating power, the influence of the first heating power and the second heating power on the target heating power is actually taken into account, making the determined target heating power more in line with actual needs.

[0069] This embodiment also limits the method of obtaining the target temperature range by using a first temperature range and a second temperature range, that is, the overlapping range of the first temperature range and the second temperature range is taken as the target temperature range. However, in other embodiments, the method of obtaining the target temperature range by using a first temperature range and a second temperature range is not limited to this. For example, the target temperature range can be determined based on the first temperature range or the second temperature range corresponding to the larger of a first coefficient and a second coefficient.

[0070] Figure 4 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application.

[0071] Combination Figure 4 In some specific embodiments, the step of obtaining the first heating power and the first temperature range based on the historical pedal opening includes:

[0072] S401: If the historical pedal opening is within the first preset opening range, then the first power is obtained as the first heating power and the first range is the first temperature range.

[0073] There are multiple preset opening ranges, and these preset opening ranges do not overlap and form a continuous interval. In this embodiment, in the correspondence between the preset opening range and the first temperature range, the first preset opening range corresponds to the first power and the first range.

[0074] S402: If the historical pedal opening is within the second preset opening range, then the second power is obtained as the first heating power and the second range is the first temperature range; wherein, the opening of the first preset opening range is greater than the opening of the second preset opening range and the two do not overlap, the first power is greater than the second power, and the average value of the first range is greater than the average value of the second range.

[0075] In the correspondence between the preset opening range and the first temperature range, the second preset opening range corresponds to the second power and the second range.

[0076] Specifically, the opening degree of the first preset opening range is greater than that of the second preset opening range, and the two do not overlap; the first power is greater than the second power; and the average value of the first range is greater than the average value of the second range. That is, in the preset correspondence between the preset opening range and the first heating power, when the average value of the preset opening range is larger, the corresponding first heating power is larger, and the average value of the corresponding first temperature range is also larger.

[0077] Figure 5 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application.

[0078] Combination Figure 5 In some specific embodiments, the step of obtaining the second heating power based on the road segment length and the current cell temperature includes:

[0079] S501: If the length of the road segment is within the first preset length range and the current cell temperature is within the first preset temperature range, then the third power is obtained as the second heating power.

[0080] In this embodiment, in the correspondence between the combination of road segment length and current cell temperature and the second heating power, the first preset length range and the first preset temperature range correspond to the third power.

[0081] S502: If the length of the road segment is within the first preset length range and the current cell temperature is within the second preset temperature range, then the fourth power is obtained as the second heating power; wherein, the average value of the first preset temperature range is greater than the average value of the second preset temperature range and the two do not overlap, and the third power is less than the fourth power.

[0082] In the correspondence between the combination of road segment length and current cell temperature and the second heating power, the first preset length range and the second preset temperature range correspond to the fourth power. That is, in the correspondence between the combination of road segment length and current cell temperature and the second heating power, if the preset length range in which the road segment length is located remains unchanged, the higher the average value of the preset temperature range corresponding to the current cell temperature, the lower the corresponding second heating power.

[0083] It should be understood that when the road segment length is within the same preset length range, the lower the average value of the preset temperature range corresponding to the current cell temperature, the lower the current cell temperature, which means that a higher power is needed to heat the battery pack, and the higher the second heating power needs to be set.

[0084] S503: If the length of the road segment is within the second preset length range and the current cell temperature is within the first preset temperature range, then the fifth power is obtained as the second heating power; wherein, the average value of the first preset length range is greater than the average value of the second preset length range and the two do not overlap, and the third power is less than the fifth power.

[0085] In the relationship between the combination of road segment length and current cell temperature and the second heating power, if the current cell temperature is within the same preset temperature range, then the larger the average value of the second preset length range corresponding to the road segment length, the smaller the corresponding second heating power.

[0086] It should be understood that when the current cell temperature is within the same preset temperature range, the shorter the remaining driving distance, the more quickly the battery pack needs to be heated to meet the actual demand. Therefore, the corresponding second heating power can be set to be larger.

[0087] Figure 6 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application.

[0088] Combination Figure 6 In some specific embodiments, the step of obtaining the second temperature range based on the road segment length and the current cell temperature includes:

[0089] S601: If the length of the road segment is within the first preset length range and the current cell temperature is within the third preset temperature range, then the third range is obtained as the second temperature range.

[0090] In the correspondence between the combination of the preset road segment and the current cell temperature and the second temperature range, the combination of the first preset length range and the third preset temperature range corresponds to the third range.

[0091] S602: If the length of the road segment is within the first preset length range and the current cell temperature is within the fourth preset temperature range, then the fourth range is obtained as the second temperature range; wherein, the average value of the third preset temperature range is greater than the average value of the fourth preset temperature range and the two do not overlap, and the average value of the third range is greater than the average value of the fourth range.

[0092] In the correspondence between the preset road segment and the current cell temperature combination and the second temperature range, the first preset length range and the fourth preset temperature range correspond to the fourth range. That is, in the correspondence between the preset road segment and the current cell temperature combination and the second temperature range, when the preset length range corresponding to the road segment length is the same, the higher the average value of the preset temperature range corresponding to the current cell temperature, the higher the average value of the corresponding second temperature range.

[0093] Figure 7 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application.

[0094] Combination Figure 7 In some specific embodiments, after the step of obtaining the target heating power and target temperature range based on the historical pedal opening, i.e., after step S102 above, the following is included:

[0095] S701: Obtain the remaining driving length of the vehicle's remaining driving segment.

[0096] Among these features, the remaining driving distance of the vehicle can be obtained through the vehicle's navigation information.

[0097] S702: Obtain the corresponding preset maximum power based on the preset remaining driving length range in which the remaining driving length is located; wherein, the preset remaining driving length range and the preset maximum power are related, and the preset driving length range with a larger average value corresponds to a larger preset maximum power.

[0098] Specifically, the correspondence between the preset remaining driving length range and the preset maximum power is preset, different preset remaining driving length ranges do not overlap, and all preset remaining driving length ranges constitute a continuous interval.

[0099] After obtaining the remaining driving length, the corresponding preset remaining driving length range can be determined based on the remaining driving length, and then the corresponding preset maximum power can be determined based on the corresponding relationship.

[0100] It should be understood that when the remaining driving distance is short, it indicates that the vehicle is nearing its destination. At this point, there is no need to heat the battery pack with high power to avoid wasting heating energy. Therefore, the smaller the average value of the preset driving length range, the smaller the corresponding preset maximum power can be set.

[0101] S703: If the target heating power is greater than the preset maximum power, the preset maximum power will be used as the target heating power; if the target heating power is less than or equal to the preset maximum power, the target heating power will remain unchanged.

[0102] The preset maximum power is the maximum heating power for the battery pack within the current remaining driving distance; that is, the heating power for the battery pack at this point cannot exceed the preset maximum power. Therefore, if the target heating power is less than or equal to the preset maximum power, the target heating power remains unchanged. When the target heating power is greater than the preset maximum power, in order to ensure that the heating power does not exceed the preset maximum power and that the battery pack is properly heated, the preset maximum power is used as the target heating power.

[0103] Figure 8 This is a flowchart illustrating another embodiment of the vehicle battery pack heating control method provided in this application.

[0104] Combination Figure 8 In some specific embodiments, before the step of obtaining the historical pedal opening of the vehicle's accelerator pedal during a historical time period, i.e. before step S101 above, the method further includes:

[0105] S801: Based on the vehicle's navigation information, obtain the vehicle's power consumption requirement for the remaining driving distance and obtain the current remaining power of the battery pack.

[0106] It should be understood that navigation information can be used to determine the length of each segment of the vehicle's remaining driving route and the corresponding driving speed. Furthermore, based on the vehicle's own configuration information, the required electricity consumption for the remaining driving route can be determined.

[0107] S802: If the remaining power after subtracting the required power consumption from the current remaining power is less than the preset remaining power, then execute the step of obtaining the historical pedal opening of the vehicle's accelerator pedal during a historical period.

[0108] The preset remaining battery level can be a small value. If the remaining battery level after subtracting the required battery consumption from the current remaining battery level is less than the preset remaining battery level, it means that the remaining battery level after driving the entire distance without charging is low. In this case, it is necessary to minimize battery usage. This involves performing steps such as obtaining the historical accelerator pedal opening value over a historical period and subsequent related steps. This can reduce the battery usage during the battery pack heating process, thereby reducing overall battery usage.

[0109] A second aspect of this application provides an electronic device, including: a processor; and a memory for storing a computer program, which, when executed by the processor, implements the heating control method in any of the above embodiments.

[0110] Figure 9 This is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in this application.

[0111] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502. The CPU 501 is a processor, and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on programs stored in the ROM 502 or programs loaded from storage portion 508 into random access memory (RAM) 503. The RAM 503 also stores various programs and data required for system operation. The CPU 501, ROM 502, and RAM 503 are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0112] The following components are connected to I / O interface 505: an input section 506 including a keyboard, mouse, etc.; an output section 507 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to I / O interface 505 as needed. Removable media 511, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 510 as needed so that computer programs read from them can be installed into storage section 508 as needed.

[0113] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 509, and / or installed from removable medium 511. When the computer program is executed by central processing unit (CPU) 501, it performs various functions defined in the system of this application.

[0114] A third aspect of this application provides a computer-readable storage medium 40, Figure 10 This is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in this application.

[0115] The computer-readable storage medium 40 stores a computer program 41, which, when executed by a processor, implements the heating control method as described in any of the above embodiments.

[0116] It should be noted that the computer-readable medium 40 shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. The transmitted data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0117] In summary, based on the vehicle battery pack heating control method, electronic device, and storage medium provided in this application, the method includes: acquiring the historical pedal opening of the vehicle's accelerator pedal during a historical time period; wherein the end time of the historical time period is the current time, and the duration of the historical time period is less than a preset duration; acquiring a target heating power and a target temperature range based on the historical pedal opening; wherein the lowest temperature of the target temperature range is a first temperature and the highest temperature is a second temperature; if the current cell temperature of the battery pack is lower than the first temperature, the battery pack is heated with the target heating power, and heating of the battery pack is stopped when the current cell temperature reaches or exceeds the second temperature. Therefore, by determining the heating power and the desired temperature range of the battery pack through the opening of the accelerator pedal, the actual heating needs of the battery pack can be met, and energy consumption can be reduced.

[0118] The above description is merely a preferred exemplary embodiment of this application and is not intended to limit the implementation of this application. Those skilled in the art can easily make corresponding modifications or alterations based on the main concept and spirit of this application. Therefore, the scope of protection of this application should be determined by the scope of protection claimed in the claims.

Claims

1. A heating control method for a vehicle battery pack, characterized in that, include: The historical pedal opening of the vehicle's accelerator pedal during a historical time period is obtained; wherein the end time of the historical time period is the current time, and the duration of the historical time period is less than a preset duration; The target heating power and target temperature range are obtained based on the historical pedal opening; wherein, the lowest temperature in the target temperature range is the first temperature and the highest temperature is the second temperature; If the current cell temperature of the battery pack is lower than the first temperature, the battery pack is heated with the target heating power, and the heating of the battery pack is stopped when the current cell temperature reaches or exceeds the second temperature. Before the step of obtaining the target heating power and target temperature range based on the historical pedal opening, the method further includes: obtaining the road length of the remaining driving segment of the vehicle and the current cell temperature of the battery pack. The steps for obtaining the target heating power and target temperature range based on the historical pedal opening include: The first heating power and the first temperature range are obtained based on the historical pedal opening, and the second heating power and the second temperature range are obtained based on the road segment length and the current cell temperature. A first coefficient and a second coefficient are obtained based on the historical pedal opening, the road segment length, and the current battery cell temperature; wherein, the combination of the historical pedal opening, the road segment length, and the current battery cell temperature has a preset correspondence with the combination of the first coefficient and the second coefficient; The sum of the first product of the first heating power and the first coefficient, and the second product of the second heating power and the second coefficient, is taken as the target heating power, and the overlapping range of the first temperature range and the second temperature range is taken as the target temperature range.

2. The heating control method according to claim 1, characterized in that, The steps of obtaining the first heating power and the first temperature range based on the historical pedal opening include: If the historical pedal opening is within a first preset opening range, then the first power is obtained as the first heating power and the first range is the first temperature range; If the historical pedal opening is within a second preset opening range, then the second power is obtained as the first heating power and the second range is the first temperature range; Wherein, the opening of the first preset opening range is greater than the opening of the second preset opening range and the two do not overlap, the first power is greater than the second power, and the average value of the first range is greater than the average value of the second range.

3. The heating control method according to claim 1, characterized in that, The step of obtaining the second heating power based on the length of the road segment and the current cell temperature includes: If the length of the road segment is within the first preset length range and the current cell temperature is within the first preset temperature range, then the third power is obtained as the second heating power; If the length of the road segment is within a first preset length range and the current cell temperature is within a second preset temperature range, then the fourth power is obtained as the second heating power; wherein, the average value of the first preset temperature range is greater than the average value of the second preset temperature range and the two do not overlap, and the third power is less than the fourth power; If the length of the road segment is within the second preset length range and the current cell temperature is within the first preset temperature range, then the fifth power is obtained as the second heating power; wherein, the average value of the first preset length range is greater than the average value of the second preset length range and the two do not overlap, and the third power is less than the fifth power.

4. The heating control method according to claim 1, characterized in that, The step of obtaining the second temperature range based on the length of the road segment and the current cell temperature includes: If the length of the road segment is within a first preset length range and the current cell temperature is within a third preset temperature range, then the third range is obtained as the second temperature range; If the length of the road segment is within the first preset length range and the current cell temperature is within the fourth preset temperature range, then the fourth range is obtained as the second temperature range; The average value of the third preset temperature range is greater than the average value of the fourth preset temperature range, and the two do not overlap. The average value of the third range is greater than the average value of the fourth range.

5. The heating control method according to claim 1, characterized in that, After obtaining the target heating power and target temperature range based on the historical pedal opening, the following steps are included: Obtain the remaining travel length of the remaining travel segment of the vehicle; The preset maximum power is obtained according to the preset remaining driving length range in which the remaining driving length is located; wherein, the preset remaining driving length range and the preset maximum power are related, and the preset driving length range with a larger average value corresponds to a larger preset maximum power. If the target heating power is greater than the preset maximum power, then the preset maximum power is used as the target heating power; if the target heating power is less than or equal to the preset maximum power, then the target heating power remains unchanged.

6. The heating control method according to claim 1, characterized in that, Before the step of obtaining the historical pedal opening of the vehicle's accelerator pedal during a historical time period, the method further includes: The required power consumption of the vehicle for the remaining driving segment is obtained based on the vehicle's navigation information, and the current remaining power of the battery pack is also obtained. If the remaining power after subtracting the required power consumption from the current remaining power is less than the preset remaining power, then the step of obtaining the historical pedal opening of the vehicle's accelerator pedal during a historical period is executed.

7. An electronic device, characterized in that, include: processor; A memory for storing a computer program that, when executed by the processor, implements the heating control method according to any one of claims 1-6.

8. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the heating control method as described in any one of claims 1-6.

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