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

Abstract

The invention relates to the technical field of battery pack heating, and discloses a heating control method for a vehicle battery pack, electronic equipment and a storage medium, and the method comprises the following steps: obtaining a historical pedal opening degree of an accelerator pedal of a vehicle in a historical period; wherein the end point moment of the historical time period is the current moment, and the duration of the historical time period is smaller than the preset duration; obtaining target heating power and a target temperature range based on the historical pedal opening degree; wherein the lowest temperature of the target temperature range is the first temperature and the highest temperature is the second temperature; and if the current battery cell temperature of the battery pack is lower than the first temperature, heating the battery pack at target heating power, and stopping heating the battery pack when the current battery cell temperature reaches or is higher than the second temperature. Therefore, the heating power of the battery pack and the required temperature range are determined through the opening degree of the accelerator pedal, the actual heating requirement of the battery pack is met, and the consumption of electric energy can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack heating, and in particular to a heating control method, electronic device and storage medium for a vehicle battery pack. Background Art

[0002] In new energy vehicles, the battery pack outputs electrical energy to the drive motor, so that the drive motor consumes electrical energy to drive the vehicle and related accessories. In a low temperature environment, when the battery cell temperature of the battery pack is low, the discharge of the battery pack will be weakened. In order to ensure the discharge capacity of the battery pack, the battery pack is usually heated by PTC, and PTC consumes the electrical energy of the battery pack when heating the battery pack.

[0003] In the related art, in a low temperature environment, as long as the vehicle is high voltage, the battery pack will be heated, and the heating power is constant. Based on this heating method, a large amount of battery pack power will be consumed, and the heating power cannot be adjusted according to the actual needs of the vehicle. Summary of the invention

[0004] In view of the above problems, the present 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 electric energy.

[0005] A first aspect of the present application provides a heating control method for a vehicle battery pack, comprising: obtaining a historical pedal opening of an accelerator pedal of a vehicle in a historical period; wherein the end moment of the historical period is the current moment, and the duration of the historical period is less than a preset duration; obtaining 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 the target temperature range based on the historical pedal opening, it also includes: obtaining the section length of the remaining driving section of the vehicle and the current battery cell temperature of the battery pack; the step of obtaining the target heating power and the target temperature range based on the historical pedal opening includes: obtaining the first heating power and the first temperature range according to the historical pedal opening, and obtaining the second heating power and the second temperature range according to the section length and the current battery cell temperature; determining the target heating power according to the first heating power and the second heating power, and determining the target temperature range according to the first temperature range and the second temperature range.

[0007] In some specific embodiments, the step of determining a target heating power based on the first heating power and the second heating power, and determining a target temperature range based on the first temperature range and the second temperature range includes: obtaining a first coefficient and a second coefficient based on historical pedal opening, road section length and current battery cell temperature; wherein a combination of historical pedal opening, road section length and current battery cell temperature has a preset corresponding relationship with a combination of the first coefficient and the second coefficient; taking 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 as the target heating power, and taking the overlapping range of the first temperature range and the second temperature range as the target temperature range.

[0008] In some specific embodiments, the step of obtaining the first heating power and the first temperature range according to the historical pedal opening includes: if the historical pedal opening is in the first preset opening range, 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 in the second preset opening range, 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 with each other, the first power is greater than the second power, and the mean of the first range is greater than the mean of the second range.

[0009] In some specific embodiments, the step of obtaining the second heating power according to the section length and the current battery cell temperature includes: if the section length is within the first preset length range and the current battery cell temperature is within the first preset temperature range, then obtaining the third power as the second heating power; if the section length is within the first preset length range and the current battery cell temperature is within the second preset temperature range, then obtaining the fourth power as the second heating power; wherein the mean of the first preset temperature range is greater than the mean of the second preset temperature range and the two do not overlap, and the third power is less than the fourth power; if the section length is within the second preset length range and the current battery cell temperature is within the first preset temperature range, then obtaining the fifth power as the second heating power; wherein the mean of the first preset length range is greater than the mean 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 the second temperature range according to the section length and the current battery cell temperature includes: if the section length is within the first preset length range and the current battery cell temperature is within the third preset temperature range, then the third range is obtained as the second temperature range; if the section length is within the first preset length range and the current battery cell temperature is within the fourth preset temperature range, then the fourth range is obtained as the second temperature range; wherein, the mean of the third preset temperature range is greater than the mean of the fourth preset temperature range and the two do not overlap, and the mean of the third range is greater than the mean of the fourth range.

[0011] In some specific embodiments, after the step of obtaining the target heating power and the target temperature range based on the historical pedal opening, the following steps are included: obtaining the remaining driving length of the remaining driving section 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 has a corresponding relationship with the preset maximum power, and the preset driving length range with a larger mean value corresponds to a larger preset maximum power; if the target heating power is greater than the preset maximum power, 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, the target heating power is kept unchanged.

[0012] In some specific embodiments, before the step of obtaining the historical pedal opening of the vehicle's accelerator pedal in the historical time period, it also includes: obtaining the required power consumption of the vehicle in the remaining driving section according to the vehicle's navigation information, and obtaining the current remaining power of the battery pack; if the remaining power after deducting the required power consumption from the current remaining power is less than the preset remaining power, executing the step of obtaining the historical pedal opening of the vehicle's accelerator pedal in the historical time period.

[0013] A second aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein when the computer program is executed by the processor, any one of the above-mentioned heating control methods is implemented.

[0014] A third aspect of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, any of the above-mentioned heating control methods is implemented.

[0015] The present application has at least the following beneficial technical effects: Based on the vehicle battery pack heating control method, electronic device and storage medium provided by the present application, the method includes: obtaining the historical pedal opening of the vehicle's accelerator pedal in a historical period; wherein the end time of the historical period is the current time, and the duration of the historical period is less than the preset duration; obtaining the target heating power and the target temperature range based on the historical pedal opening; wherein the lowest temperature of the target temperature range is the first temperature and the highest temperature is the second temperature; if the current battery 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 battery cell temperature is higher than the second temperature. Therefore, the heating power of the battery pack and the temperature range to be reached are determined by the opening of the accelerator pedal, which meets the actual heating needs of the battery pack and can reduce the consumption of electric energy.

[0016] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0018] Figure 1 It is a flow chart of an embodiment of a heating control method for a vehicle battery pack provided by the present application;

[0019] Figure 2 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0020] Figure 3 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0021] Figure 4 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0022] Figure 5 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0023] Figure 6 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0024] Figure 7 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0025] Figure 8 is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided by the present application;

[0026] Fig. 9 It is a schematic diagram of the structural framework of an embodiment of the electronic device provided by the present application;

[0027] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided by the present application. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] A first aspect of the present application provides a heating control method for a vehicle battery pack, which is applied to new energy vehicles. The new energy vehicle can use the electric energy provided by the battery pack to enable a drive motor to operate, thereby enabling the drive motor to drive the vehicle.

[0031] Figure 1 1 is a flow chart of an embodiment of a heating control method for a vehicle battery pack provided by the present application. Figure 1 , the method comprises the following steps:

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

[0033] When the accelerator pedal of the vehicle is pressed, the drive motor will provide greater drive power, thereby making the vehicle have better power. In addition, the greater the degree of the accelerator pedal being pressed, the greater the corresponding drive power of the drive motor will be.

[0034] The preset duration can be set in advance, and the preset duration can be a shorter duration, for example, it can be set to 1 minute. If the duration of the historical period is less than the preset duration, it means that the historical period is a shorter period, for example, the historical period can 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 as time passes, and the duration of the historical period remains unchanged.

[0035] The opening degree of the accelerator pedal in the historical period is the historical pedal opening degree. Since the historical period is shorter and closer to the current moment, the historical pedal opening degree actually reflects the opening state of the vehicle's accelerator pedal at the current moment.

[0036] The historical pedal opening may be an average opening obtained through all opening data in a historical period, or may be a maximum opening corresponding to all opening data in a historical period, and no specific limitation is made here.

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

[0038] It should be understood that the pedal opening reflects the driving power output by the drive motor, and the higher the driving power of the drive motor, the higher the amount of electricity that the battery pack needs to output per unit time. In combination with the above content, the historical pedal opening reflects the opening state of the accelerator pedal at the current moment, that is, it reflects the driving power requirement of the drive motor at the current moment, that is, it reflects the discharge amount requirement of the battery pack at the current moment, that is, it reflects the discharge performance requirement of the battery pack.

[0039] When the ambient temperature is low, the battery pack's cell temperature is low, and the battery pack's discharge performance is affected, that is, the discharge amount per unit time is affected. When the battery pack is heated, the cell temperature rises, and the battery pack's discharge performance is significantly improved. Moreover, the higher the heating power, the faster the battery pack's cell temperature rises, and the faster the battery pack's discharge capacity improves.

[0040] Combined with the above content, it can be seen that the larger the historical pedal opening, the higher the discharge performance requirements for the battery pack. In order to ensure that the battery pack meets the corresponding discharge performance requirements, it is necessary to adjust the heating power for the battery pack and set the target temperature range, that is, set the temperature range that the battery pack needs to reach.

[0041] Among them, the historical pedal opening and the corresponding target heating power and target temperature range can be preset. There are multiple non-overlapping opening ranges preset, and different opening ranges correspond to different target heating powers and target temperature ranges, and the larger the mean of the opening range, the higher the corresponding target heating power, and the higher the mean temperature of the corresponding target temperature range. In some application scenarios, when the historical pedal opening is 0, the corresponding target heating power can be 0, that is, when the historical pedal opening is 0, the battery pack is not heated.

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

[0043]

[0044]

[0045] Based on this setting, 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. Among them, the above-mentioned target temperature range is a left-closed and right-open interval. For example, the above-mentioned target temperature range of -10-5°C represents a temperature range greater than or equal to -10°C and less than 5°C. Moreover, in subsequent embodiments, if multiple continuous ranges are involved, each range can be a left-closed and 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 at 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 a temperature range in which the temperature 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 battery 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 means that the cell temperature is low and needs to be heated, and 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 requirement, the discharge capacity is sufficient, and no further heating is required, and the heating of the battery pack is stopped at this time.

[0049] In summary, the target heating power of the battery pack and the target temperature range to be achieved are determined by the historical pedal opening of the accelerator pedal, which meets the battery pack heating requirements corresponding to the battery pack discharge capacity requirements corresponding to the historical pedal opening, and adapts to the real-time heating requirements of the battery pack. Therefore, compared with the method of heating at a constant power all the time, the present application can adjust the heating power according to the real-time heating requirements obtained according to the historical pedal opening, which can reduce the consumption of electric energy. In addition, when the historical pedal opening is 0, heating can be stopped, which can also reduce the consumption of electric energy.

[0050] Figure 2 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

[0051] Combination Figure 2 In some specific embodiments, before the step of obtaining the target heating power and the target temperature range based on the historical pedal opening, that is, before the above step S102, it also includes:

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

[0053] The length of the remaining driving section of the vehicle can be obtained through the navigation information of the vehicle, and the length of the remaining driving section corresponding to the remaining driving section may be constantly changing during the driving process of the vehicle. Among them, the current cell temperature of the battery pack can be obtained in real time through the set sensor.

[0054] It should be understood that this step can be performed together with the above-mentioned step S101, that is, when the historical pedal opening is obtained, the length of the remaining driving section and the current cell temperature of the battery pack can be obtained, which is of course not limited to this.

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

[0056] S202: Obtain a first heating power and a first temperature range according to a historical pedal opening, and obtain a second heating power and a second temperature range according to a road section length and a current battery core temperature.

[0057] This embodiment will no longer obtain the target heating power and target temperature range through a single historical pedal opening, but will combine the three elements of historical pedal opening, road section length and current battery cell temperature to obtain intermediate data, and ultimately obtain the target heating power and target temperature range through the intermediate data.

[0058] In this embodiment, a correspondence can be established between the historical pedal opening, the first heating power, and the first temperature range, and then the corresponding first heating power and the first temperature range can be obtained according to the historical pedal opening and the correspondence. Similarly, a correspondence can be established between the combination of the section length and the current battery core temperature, the second heating power and the second temperature range, and then the corresponding second heating power and the second temperature range can be obtained according to the combination of the section length and the current battery core temperature and the correspondence.

[0059] S203: determining a target heating power according to the first heating power and the second heating power, and determining a target temperature range according to the first temperature range and the second temperature range.

[0060] At this time, the first heating power and the second heating power are actually intermediate data, and the first heating power and the second heating power need to be further processed to obtain the target heating power. Similarly, the first temperature range and the second temperature range are also intermediate data, and the first temperature range and the second temperature range need to be further processed to obtain the target temperature range.

[0061] This embodiment does not specifically limit the specific method of determining the target heating power through the first heating power and the second heating power, and the specific method of determining the target temperature range through the first temperature range and the second temperature range. This embodiment focuses on obtaining intermediate data through multiple factors, and obtaining the target heating power and the target temperature range through the intermediate data.

[0062] Figure 3 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

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

[0064] S301: Obtaining a first coefficient and a second coefficient according to historical pedal opening, section length and current battery cell temperature; wherein a combination of historical pedal opening, section length and current battery cell temperature has a preset corresponding relationship with a combination of the first coefficient and the second coefficient.

[0065] The above embodiment determines the target heating power through the first heating power and the second heating power, and now further restrictions are made on the specific method.

[0066] It should be understood that the historical pedal opening determines the first heating power, while the road section length and the current battery core temperature determine the second heating power. Under different combinations of historical pedal opening, road section length and current battery core temperature, the degree of influence of each factor on the target heating power is generally different. For example, under a certain combination, the historical pedal power may have the greatest influence on the target heating power, and at this time, it is necessary to focus on the first heating power corresponding to the historical pedal power. In another combination, the road section length and the current battery core power may have the greatest influence on the target heating power, and at this time, it is necessary to focus on the corresponding second heating power. Therefore, different combinations of historical pedal opening, road section length and current battery core temperature can be preset, and different combinations correspond to different combinations of the first coefficient and the second coefficient, that is, a preset corresponding relationship between the two combinations is established. At this time, the first coefficient and the second coefficient actually represent the degree of influence of the first heating power and the second heating power on the target heating power, respectively.

[0067] S302: taking 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 as the target heating power, and taking the overlapping range of the first temperature range and the second temperature range as the target temperature range.

[0068] In combination with the above content, 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 taken as the target heating power, the degree of influence of the first heating power and the second heating power on the target heating power is actually referred to, so that the determined target heating power is more in line with actual needs.

[0069] This embodiment also limits the method of obtaining the target temperature range through the first temperature range and the second temperature range, that is, the overlapping range of the first temperature range and the second temperature range is used as the target temperature range. However, in other embodiments, the method of obtaining the target temperature range through the first temperature range and the second temperature range is not limited to this. For example, the first temperature range or the second temperature range corresponding to the larger one of the first coefficient and the second coefficient can be used as the target temperature range.

[0070] Figure 4 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

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

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

[0073] There are multiple preset opening ranges, and the multiple preset opening ranges do not overlap and constitute a continuous interval. In this embodiment, in the corresponding relationship 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, 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 with each other, the first power is greater than the second power, and the mean of the first range is greater than the mean of the second range.

[0075] In the corresponding relationship 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] 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 mean of the first range is greater than the mean of the second range. That is, in the preset corresponding relationship between the preset opening range and the first heating power, when the mean of the preset opening range is larger, the corresponding first heating power is larger, and the corresponding mean of the first temperature range is larger.

[0077] Figure 5 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

[0078] Combination Figure 5 In some specific embodiments, the step of obtaining the second heating power according to the length of the road section and the current battery core temperature includes:

[0079] S501: If the length of the road section is within a first preset length range and the current battery cell temperature is within a first preset temperature range, obtaining a third power as a second heating power.

[0080] In this embodiment, in the correspondence between the combination of the section length and the current battery core 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 road section length is within the first preset length range and the current battery cell temperature is within the second preset temperature range, the fourth power is obtained as the second heating power; wherein the mean value of the first preset temperature range is greater than the mean 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 the section length and the current battery core 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 the section length and the current battery core temperature and the second heating power, if the preset length range in which the section length is located remains unchanged, the higher the mean value of the preset temperature range corresponding to the current battery core temperature, the lower the corresponding second heating power.

[0083] It should be understood that when the preset length range of the road section is the same, the lower the mean of the preset temperature range corresponding to the current battery cell temperature, the lower the current battery 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 road section length is within the second preset length range and the current battery cell temperature is within the first preset temperature range, the fifth power is obtained as the second heating power; wherein the mean value of the first preset length range is greater than the mean 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 correspondence between the combination of the section length and the current battery cell temperature and the second heating power, if the current battery cell temperature is in the same preset temperature range, the larger the mean of the second preset length range corresponding to the section length, the smaller the corresponding second heating power.

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

[0087] Figure 6 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

[0088] Combination Figure 6 In some specific embodiments, the step of obtaining the second temperature range according to the length of the road section and the current battery core temperature includes:

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

[0090] In the corresponding relationship between the combination of the preset road section and the current battery core 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 road section length is within the first preset length range and the current battery cell temperature is within the fourth preset temperature range, the fourth range is obtained as the second temperature range; wherein the mean of the third preset temperature range is greater than the mean of the fourth preset temperature range and the two do not overlap, and the mean of the third range is greater than the mean of the fourth range.

[0092] In the correspondence between the combination of the preset section and the current battery cell temperature 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 combination of the preset section and the current battery cell temperature and the second temperature range, when the preset length ranges corresponding to the section lengths are the same, the higher the mean of the preset temperature range corresponding to the current battery cell temperature, the higher the mean of the corresponding second temperature range.

[0093] Figure 7 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

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

[0095] S701: Obtain the remaining travel length of the remaining travel section of the vehicle.

[0096] The remaining driving distance of the vehicle on the remaining driving section can be obtained through the navigation information of the vehicle.

[0097] S702: Obtain 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 has a corresponding relationship with the preset maximum power, and the preset driving length range with a larger mean value corresponds to a larger preset maximum power.

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

[0099] After the remaining driving length is obtained, the corresponding preset remaining driving length range can be determined according to the remaining driving length, and then the corresponding preset maximum power can be determined according to the corresponding relationship.

[0100] It should be understood that when the remaining driving distance is small, it means that the vehicle is about to reach the destination, and at this time, there is no need to heat the battery pack with a large power to avoid heating waste. Therefore, the smaller the average value of the preset driving length range is, 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 is 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 is kept unchanged.

[0102] The preset maximum power is the maximum heating power for the battery pack under the current remaining driving length, that is, the heating power for the battery pack cannot exceed the preset maximum power. Therefore, when 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 the battery pack can be heated well, the preset maximum power is used as the target heating power.

[0103] Figure 8 It is a flow chart of another embodiment of the heating control method for a vehicle battery pack provided in the present application.

[0104] Combination Figure 8 In some specific embodiments, before the step of obtaining the historical pedal opening of the accelerator pedal of the vehicle in the historical period, that is, before the above step S101, it also includes:

[0105] S801: Obtain the required power consumption of the vehicle on the remaining driving section according to the navigation information of the vehicle, and obtain the current remaining power of the battery pack.

[0106] It should be understood that based on the navigation information, the segment lengths of each segment of the vehicle's remaining driving section and the corresponding driving speed can be obtained, and further based on the vehicle's own configuration information, the required power consumption of the vehicle in the remaining driving section can be obtained.

[0107] S802: If the remaining power after deducting the required power consumption from the current remaining power is less than the preset remaining power, the step of obtaining the historical pedal opening of the vehicle's accelerator pedal in the historical period is executed.

[0108] The preset remaining power can be a smaller power. The remaining power after deducting the required power from the current remaining power is less than the preset remaining power, indicating that the remaining power after the vehicle completes the journey without charging is low. At this time, it is necessary to minimize the use of power, that is, to perform the step of obtaining the historical pedal opening of the vehicle's accelerator pedal in the historical period and subsequent related steps, thereby reducing the use of power during the battery pack heating process, so as to reduce the use of power overall.

[0109] A second aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein when the computer program is executed by the processor, the heating control method in any of the above embodiments is implemented.

[0110] Fig. 9 It is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in the present application.

[0111] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502, wherein the CPU 501 is a processor and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes according to the program stored in the ROM 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502 and the RAM 503 are connected to each other through the bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0112] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, 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, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0113] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

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

[0115] The computer readable storage medium 40 stores a computer program 41 , and when the computer program 41 is executed by a processor, the heating control method in any of the above embodiments is implemented.

[0116] It should be noted that the computer-readable medium 40 shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (Erasable Programmable Read On ly Memory, EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0117] In summary, based on the heating control method, electronic device and storage medium of the vehicle battery pack provided by the present application, the method includes: obtaining the historical pedal opening of the vehicle's accelerator pedal in the historical period; wherein the end time of the historical period is the current time, and the duration of the historical period is less than the preset duration; obtaining the target heating power and the target temperature range based on the historical pedal opening; wherein the lowest temperature of the target temperature range is the first temperature and the highest temperature is the second temperature; if the current battery 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 battery cell temperature reaches or exceeds the second temperature. Therefore, the heating power of the battery pack and the temperature range to be reached are determined by the opening of the accelerator pedal, which meets the actual heating needs of the battery pack and can reduce the consumption of electric energy.

[0118] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A heating control method for a vehicle battery pack, characterized in that: include: Obtaining a historical pedal opening of the accelerator pedal of the vehicle in a historical period; wherein the end time of the historical period is the current time, and the duration of the historical period is less than a preset duration; Acquire 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 at the target heating power, and the heating of the battery pack is stopped when the current cell temperature reaches or exceeds the second temperature.

2. The heating control method according to claim 1, characterized in that: Before the step of acquiring the target heating power and the target temperature range based on the historical pedal opening, the method further includes: Obtaining the length of the remaining driving section of the vehicle and the current cell temperature of the battery pack; The step of acquiring the target heating power and the target temperature range based on the historical pedal opening comprises: Acquire a first heating power and a first temperature range according to the historical pedal opening, and acquire a second heating power and a second temperature range according to the road section length and the current battery core temperature; A target heating power is determined according to the first heating power and the second heating power, and a target temperature range is determined according to the first temperature range and the second temperature range.

3. The heating control method according to claim 2, characterized in that: The step of determining a target heating power according to the first heating power and the second heating power, and determining a target temperature range according to the first temperature range and the second temperature range includes: Obtaining a first coefficient and a second coefficient according to the historical pedal opening, the road section length and the current battery core temperature; wherein a combination of the historical pedal opening, the road section length and the current battery core temperature has a preset corresponding relationship with a combination of the first coefficient and the second coefficient; The sum of a first product of the first heating power and the first coefficient and a 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.

4. The heating control method according to claim 2, characterized in that: The step of acquiring a first heating power and a first temperature range according to the historical pedal opening comprises: If the historical pedal opening is within a first preset opening range, obtaining a first power as a first heating power and the first range is a first temperature range; If the historical pedal opening is within a second preset opening range, obtaining a second power as the first heating power and the second range is a first temperature range; 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 mean of the first range is greater than the mean of the second range.

5. The heating control method according to claim 2, characterized in that: The step of obtaining the second heating power according to the section length and the current battery core temperature includes: If the length of the road section is within the first preset length range and the current battery core temperature is within the first preset temperature range, obtaining the third power as the second heating power; If the length of the road section is within a first preset length range and the current battery core temperature is within a second preset temperature range, the fourth power is obtained as the second heating power; wherein the mean value of the first preset temperature range is greater than the mean 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 section length is within the second preset length range and the current battery cell temperature is within the first preset temperature range, the fifth power is obtained as the second heating power; wherein the mean value of the first preset length range is greater than the mean value of the second preset length range and the two do not overlap, and the third power is less than the fifth power.

6. The heating control method according to claim 2, characterized in that: The step of acquiring a second temperature range according to the section length and the current battery core temperature includes: If the length of the road section is within the first preset length range and the current battery cell temperature is within the third preset temperature range, the third range is obtained as the second temperature range; If the length of the road section is within the first preset length range and the current battery cell temperature is within the fourth preset temperature range, obtaining the fourth range as the second temperature range; Among them, the mean value of the third preset temperature range is greater than the mean value of the fourth preset temperature range and the two do not overlap with each other, and the mean value of the third range is greater than the mean value of the fourth range.

7. The heating control method according to claim 1, characterized in that: After the step of obtaining the target heating power and the target temperature range based on the historical pedal opening, the method includes: Obtaining the remaining travel length of the remaining travel section of the vehicle; Obtaining a corresponding preset maximum power according to a preset remaining driving length range in which the remaining driving length is located; wherein the preset remaining driving length range has a corresponding relationship with the preset maximum power, and a preset driving length range with a larger mean value corresponds to a larger preset maximum power; If the target heating power is greater than the preset maximum power, 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, the target heating power is kept unchanged.

8. The heating control method according to claim 1, characterized in that: Before the step of obtaining the historical pedal opening of the accelerator pedal of the vehicle in the historical period, the method further includes: Obtaining the required power consumption of the vehicle in the remaining driving section according to the navigation information of the vehicle, and obtaining the current remaining power of the battery pack; If the remaining power after deducting the required power consumption from the current remaining power is less than the preset remaining power, the step of obtaining the historical pedal opening of the accelerator pedal of the vehicle in the historical period is executed.

9. An electronic device, characterized in that: include: processor; A memory for storing a computer program, wherein the computer program, when executed by the processor, implements the heating control method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the heating control method according to any one of claims 1 to 8 is implemented.

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