Battery temperature control method and apparatus, computer-readable storage medium, and vehicle

Abstract

A battery temperature control method and apparatus, a computer-readable storage medium, and a vehicle. The battery temperature control method comprises: acquiring a battery temperature of a vehicle; and on the basis of the battery temperature and associated feature information of the vehicle, determining whether to heat or cool a battery.

Description

Battery temperature control methods, devices, computer-readable storage media, and vehicles

[0001] This application claims priority to Chinese patent application No. 202410704129.4, filed on May 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle control technology, and in particular to a battery temperature control method, apparatus, computer-readable storage medium, and vehicle. Background Technology

[0003] Electric vehicles are now very common, and each vehicle includes its battery. In low ambient temperatures, the battery temperature is typically low. When a low battery temperature is detected, the battery heating system is activated, and heating stops once the preset temperature is reached. In high ambient temperatures, when the battery's discharge power is high, the battery temperature will be high. When a high battery temperature is detected, cooling is activated. Heating or cooling the battery usually requires a certain amount of energy. For example, the heat source for battery heating is typically a heater or active heat generation by the motor, which takes a relatively long time, and the water temperature rises slowly from below -20°C to the target temperature. Summary of the Invention

[0004] This disclosure provides a battery temperature control method, apparatus, computer-readable storage medium, and vehicle, which can reduce unnecessary energy waste and increase driving range.

[0005] In a first aspect, some embodiments of this disclosure provide a battery temperature control method, including: acquiring the battery temperature of a vehicle; and determining whether to heat or cool the battery based on the battery temperature and associated characteristic information of the vehicle.

[0006] The first approach does not rely solely on battery temperature to determine whether to heat or cool the battery. Instead, it uses a combination of battery temperature and vehicle-related characteristics to determine whether heating is necessary. This reduces unnecessary energy waste and increases driving range.

[0007] In some embodiments, the associated characteristic information of the vehicle includes at least one of the following: vehicle navigation information, vehicle speed, vehicle discharge power, battery charging power, ambient temperature of the vehicle, and battery state of charge (SOC).

[0008] In some embodiments, determining whether to heat or cool the battery based on battery temperature and associated vehicle characteristics includes:

[0009] If the battery temperature is less than the first threshold and the vehicle's associated feature information meets the first condition, it is determined that the battery will be heated.

[0010] In some embodiments, determining whether to heat or cool the battery based on battery temperature and associated vehicle characteristics includes:

[0011] If the battery temperature is below the first threshold and the vehicle's associated feature information meets the second condition, it is determined that the battery will not be heated.

[0012] In some embodiments, determining whether to heat or cool the battery based on battery temperature and associated vehicle characteristics further includes:

[0013] If the battery temperature is greater than the second threshold and the vehicle's associated feature information meets the third condition, it is determined that the battery will not be cooled.

[0014] In some embodiments, before determining whether to heat the battery based on the vehicle's associated characteristic information, the method further includes:

[0015] The battery's state of charge (SOC) is determined to be less than the third threshold.

[0016] In some embodiments, the associated feature information includes the vehicle's speed;

[0017] The second condition includes: the vehicle speed is less than the fourth threshold.

[0018] In some embodiments, the associated feature information includes the vehicle's navigation information;

[0019] The second condition includes: each of at least one of the vehicle's driving parameters satisfies the corresponding driving parameter condition, and the driving parameters are determined by navigation information.

[0020] In some embodiments, at least one driving parameter includes at least one of the following: the predicted driving time of the vehicle from the starting point to the destination, the predicted driving speed of the vehicle, the predicted driving distance of the vehicle from the starting point to the destination, and the predicted SOC of the vehicle when it reaches the destination.

[0021] The driving parameter condition corresponding to the predicted driving time is: the predicted driving time is less than the fifth threshold.

[0022] The driving parameter condition corresponding to the predicted driving speed is: the predicted driving speed is less than the sixth threshold.

[0023] The driving parameter condition corresponding to the predicted driving distance is: the predicted driving distance is less than the seventh threshold.

[0024] The driving parameter condition for predicting SOC is: the predicted SOC is greater than the eighth threshold.

[0025] In some embodiments, the associated feature information includes at least one of the following: vehicle speed or vehicle discharge power;

[0026] The second condition includes at least one of the following: the vehicle speed is 0, or the vehicle's discharge power is less than the ninth threshold.

[0027] In some embodiments, the associated feature information of the vehicle includes the vehicle's navigation information;

[0028] The first condition includes: navigation information indicating that the vehicle will enter a highway section.

[0029] In some embodiments, the associated characteristic information of the vehicle includes the ambient temperature of the vehicle and the vehicle speed.

[0030] The third condition includes: the ambient temperature of the vehicle is less than the tenth threshold, and the vehicle speed is less than the eleventh threshold.

[0031] In some embodiments, the associated feature information includes at least one of the battery's charging power or the ambient temperature of the vehicle.

[0032] The third condition includes at least one of the following: when the battery is charging, the charging power is less than the twelfth threshold, or the ambient temperature of the vehicle is less than the thirteenth threshold.

[0033] In some embodiments, the associated feature information includes the battery's SOC, the ambient temperature of the vehicle, and the vehicle's speed.

[0034] The third condition includes: when the battery is fully charged, the battery's SOC is greater than the fourteenth threshold, the ambient temperature of the vehicle is less than the fifteenth threshold, and the vehicle's speed is 0.

[0035] Secondly, some embodiments of this disclosure provide a battery temperature control device, including:

[0036] Acquisition unit for detecting vehicle battery temperature;

[0037] The determination unit is used to determine whether to heat or cool the battery based on the battery temperature and related vehicle characteristics.

[0038] In some embodiments, the associated characteristic information of the vehicle includes at least one of the following: vehicle navigation information, vehicle speed, vehicle discharge power, battery charging power, ambient temperature of the vehicle, and battery SOC.

[0039] In some embodiments, the determining unit is used for:

[0040] If the battery temperature is below the first threshold and the vehicle's associated feature information meets the first condition, it is determined whether to heat the battery based on the vehicle's associated feature information.

[0041] In some embodiments, the determining unit is used for:

[0042] If the battery temperature is below the first threshold and the vehicle's associated feature information meets the second condition, it is determined that the battery will not be heated.

[0043] In some embodiments, if the battery temperature is greater than a second threshold and the associated feature information of the vehicle meets a third condition, it is determined that the battery will not be cooled.

[0044] In some embodiments, the determining unit is further configured to determine that the SOC of the battery is less than a third threshold.

[0045] In some embodiments, the associated characteristic information of the vehicle includes the vehicle speed.

[0046] The second condition includes: the vehicle speed is less than the fourth threshold.

[0047] In some embodiments, the associated feature information includes the vehicle's navigation information;

[0048] The second condition includes: at least one of the vehicle's driving parameters meets the corresponding driving parameter conditions, and the driving parameters are determined by navigation information.

[0049] In some embodiments, at least one driving parameter includes at least one of the following: the predicted driving time of the vehicle from the starting point to the destination, the predicted driving speed of the vehicle, the predicted driving distance of the vehicle from the starting point to the destination, and the predicted SOC of the vehicle when it reaches the destination.

[0050] The driving parameter condition corresponding to the predicted driving time is: the predicted driving time is less than the fifth threshold.

[0051] The driving parameter condition corresponding to the predicted driving speed is: the predicted driving speed is less than the sixth threshold.

[0052] The driving parameter condition corresponding to the predicted driving distance is: the predicted driving distance is less than the seventh threshold.

[0053] The driving parameter condition for predicting SOC is: the predicted SOC is greater than the eighth threshold.

[0054] In some embodiments, the associated feature information includes at least one of the vehicle speed or the vehicle's discharge power;

[0055] The second condition includes at least one of the following: the vehicle speed is 0, or the vehicle's discharge power is less than the ninth threshold.

[0056] In some embodiments, the associated feature information of the vehicle includes the vehicle's navigation information;

[0057] The first condition includes: navigation information indicating that the vehicle will enter a highway section.

[0058] In some embodiments, the associated characteristic information of the vehicle includes the ambient temperature of the vehicle and the vehicle speed.

[0059] The third condition includes: the ambient temperature of the vehicle is less than the tenth threshold, and the vehicle speed is less than the eleventh threshold.

[0060] In some embodiments, the associated feature information includes the battery’s charging power and / or the ambient temperature of the vehicle.

[0061] The third condition includes at least one of the following: when the battery is charging, the charging power is less than the twelfth threshold, or the ambient temperature of the vehicle is less than the thirteenth threshold.

[0062] In some embodiments, the associated feature information includes the battery's SOC, the ambient temperature of the vehicle, and the vehicle's speed.

[0063] The third condition includes: when the battery is fully charged, the battery's SOC is greater than the fourteenth threshold, the ambient temperature of the vehicle is less than the fifteenth threshold, and the vehicle's speed is 0.

[0064] Thirdly, some embodiments of this disclosure provide a computer-readable storage medium for storing a computer program that, when run on a computer, causes the computer to execute the battery temperature control method provided by any possible implementation of the first aspect, thereby achieving the beneficial effects of the battery temperature control method provided in the first aspect.

[0065] Fourthly, some embodiments of this disclosure provide a battery temperature control device, which may include a processor and a memory interconnected. The memory stores a computer program, and the processor is configured to execute the computer program to implement the battery temperature control method provided in the first aspect, thereby achieving the beneficial effects of the battery temperature control method provided in the first aspect.

[0066] Fifthly, some embodiments of this disclosure provide a vehicle that may include the battery temperature control device provided in the second or fourth aspects described above.

[0067] In a sixth aspect, some embodiments of this disclosure provide a chip system including one or more processors that invoke computer instructions to cause the computing device to perform the methods shown in the first aspect or any possible implementation thereof.

[0068] In a seventh aspect, this disclosure provides a computer program product containing instructions that, when run on a computing device, cause the computing device to perform the method described in the first aspect and any possible implementation thereof.

[0069] It is understood that the related products provided in the second to seventh aspects above are all used to perform the methods shown in the first aspect or any implementation of the first aspect in some embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0070] By implementing some embodiments of this disclosure, when the battery temperature is detected to be low and the battery SOC is low, the battery will not be heated immediately. Instead, the system will further determine whether the battery needs to be heated based on at least one of the vehicle's navigation information, vehicle speed, and vehicle discharge power. For example, heating is not required at low vehicle speed or low discharge power, thereby reducing unnecessary energy waste and increasing driving range. Attached Figure Description

[0071] The accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0072] Figure 1 is a flowchart of a battery temperature control method according to some embodiments;

[0073] Figure 2 is a flowchart of another battery temperature control method according to some embodiments;

[0074] Figure 3 is a block diagram of a battery temperature control device according to some embodiments;

[0075] Figure 4 is a block diagram of another battery temperature control device according to some embodiments;

[0076] Figure 5 is a structural diagram of a vehicle according to some embodiments. Detailed Implementation

[0077] The present disclosure will now be described in further detail with reference to the accompanying drawings.

[0078] The terminology used in the following embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. As used in the specification and appended claims of this disclosure, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise.

[0079] Vehicles include batteries. In the battery thermal management strategies of related technologies, heating is initiated when the battery temperature is below a first threshold, and cooling is initiated when the battery temperature is above a second threshold. This results in energy waste and reduces the vehicle's driving range. Therefore, how to save energy and increase driving range is an urgent problem to be solved.

[0080] To address the above problems, this disclosure provides a battery temperature control method according to some embodiments. Figure 1 is a schematic flowchart of a battery temperature control method according to some embodiments. As shown in Figure 1, the battery temperature control method includes the following steps:

[0081] 101. Obtain the vehicle's battery temperature.

[0082] In some embodiments, the vehicle's battery temperature may rise during charging; or, the vehicle's battery temperature may vary with changes in ambient temperature; for example, the battery temperature may be relatively low when the ambient temperature is low (e.g., less than or equal to -5 degrees Celsius); or, the vehicle's battery temperature may vary with the vehicle's discharge power; for example, the battery temperature may rise when the vehicle's discharge power is high (e.g., high-power discharge, exceeding a predetermined threshold). These scenarios are merely examples.

[0083] 102. Based on the battery temperature and the vehicle's associated characteristics, determine whether to heat or cool the battery.

[0084] In some embodiments of this disclosure, the associated characteristic information of the vehicle may include, but is not limited to, at least one of the following: vehicle navigation information, vehicle speed, vehicle discharge power, vehicle battery charging power, ambient temperature of the vehicle, and the state of charge (SOC) of the vehicle battery, etc. Whether to heat or cool the battery can be determined jointly based on the battery temperature and the associated characteristic information of the vehicle, thereby avoiding heating the battery when the battery temperature is relatively low or cooling the battery when the battery temperature is relatively high.

[0085] It should be noted that in many scenarios, even if the battery temperature is low, heating the battery is not necessary; and even if the battery temperature is high, cooling the battery is not necessary, thus saving energy.

[0086] For example, when the battery temperature is below a first threshold, it is further determined whether to heat the battery based on the vehicle's associated feature information. This associated feature information may include at least one of the following: vehicle navigation information, vehicle speed, vehicle discharge power, etc. The method for determining whether to heat the battery is as described in Figure 2.

[0087] In some embodiments, when the battery temperature is less than a first threshold and the battery's SOC is less than a third threshold, it is determined whether to heat the battery based on the vehicle's associated feature information.

[0088] For example, when the battery temperature exceeds a second threshold, it is further determined whether to heat the battery based on the vehicle's associated feature information. This associated feature information may include at least one of the following: vehicle navigation information, vehicle speed, vehicle discharge power, etc. The method for determining whether to heat the battery is as described in Figure 2. Figure 2 is a flowchart illustrating another battery temperature control method according to some embodiments. As shown in Figure 2, the battery temperature control method includes the following steps:

[0089] 201. Obtain the vehicle's battery temperature.

[0090] Step 201 is similar to step 101, and will not be repeated here.

[0091] 202. If the battery temperature is less than the first threshold and the vehicle's associated feature information meets the first condition, it is determined that the battery should be heated.

[0092] 203. If the battery temperature is less than the first threshold and the vehicle's associated feature information meets the second condition, it is determined that the battery will not be heated.

[0093] Here, the associated feature information includes at least one of the following: vehicle navigation information, vehicle speed, or vehicle discharge power. If the battery temperature is less than a first threshold and the battery's SOC is less than a third threshold, for example, the third threshold could be 40%, then it can be determined whether to heat the battery based on the aforementioned associated vehicle feature information.

[0094] In low ambient temperatures (e.g., ambient temperature less than or equal to -5 degrees Celsius), the battery temperature is relatively low. If the battery temperature is less than a first threshold and the battery's SOC is less than a third threshold, it can be further determined whether battery heating is required based on the aforementioned associated characteristic information. In some embodiments, the vehicle may currently be in a drive-discharge condition (i.e., vehicle speed not equal to 0) or a vehicle-powered but driveless condition (i.e., vehicle-powered but vehicle speed equal to 0). If battery heating is required, it can be understood as issuing or responding to a heating command; if battery heating is not required, it can be understood as not responding to a heating command, which may be triggered when the battery temperature is less than the first threshold. Further, the heating command may be triggered when the battery temperature is less than the first threshold and the SOC is less than the third threshold.

[0095] The following example illustrates how to determine whether to heat the battery based on the conditions satisfied by the associated feature information.

[0096] In some embodiments, the associated feature information includes the vehicle speed, in which case it can be determined whether to heat the battery based on the vehicle speed.

[0097] If the battery temperature is below a first threshold and the battery's state of charge (SOC) is below a third threshold, and the vehicle speed is below a fourth threshold (i.e., the second condition includes the vehicle speed being below the fourth threshold), it can be determined that the battery will not be heated. Here, the fourth threshold can be, for example, 60 km / h.

[0098] Understandably, when the temperature is low and the battery's SOC is below the third threshold, the battery may experience a sudden change in SOC during high-power discharge if it is not heated. However, this has less impact when driving in urban areas where low speeds are required. Therefore, when the vehicle speed is below the fourth threshold, it is not necessary to heat the battery, thereby reducing unnecessary energy waste.

[0099] When the battery temperature is below the first threshold and the battery's State of Charge (SOC) is below the third threshold, if the vehicle speed is greater than or equal to the fourth threshold (i.e., the first condition includes the vehicle speed being greater than the fourth threshold), it can be determined that battery heating is necessary. It is understandable that because the vehicle speed is high and the vehicle's discharge power is relatively high, failure to heat the battery would lead to a sudden change in SOC; therefore, battery heating is required.

[0100] In some embodiments, the associated feature information includes vehicle navigation information, in which case it can be determined whether to heat the battery based on at least one driving parameter determined by the navigation information.

[0101] When the battery temperature is below a first threshold and the battery's SOC is below a third threshold, if the vehicle is in a driving discharge condition (i.e., vehicle speed is not equal to 0) or in a fully powered but non-driving condition (i.e., vehicle speed is equal to 0), and navigation information of the vehicle can be obtained, and at least one driving parameter of the vehicle can be determined based on the navigation information, if each of the at least one driving parameter satisfies its corresponding driving parameter condition, i.e., the second condition includes at least one driving parameter of the vehicle satisfying its corresponding driving parameter condition, then it is determined that the battery will not be heated. Each driving parameter corresponds to a driving parameter condition, which is used to limit the conditions that the corresponding driving parameter must satisfy when the battery is not heated.

[0102] In some embodiments, any one of the at least one driving parameter may include any one of the following: the predicted driving time of the vehicle from the starting point to the destination, the predicted driving speed of the vehicle, the predicted driving distance of the vehicle from the starting point to the destination, and the predicted SOC of the vehicle when it reaches the destination.

[0103] Here, the predicted SOC when the vehicle reaches the destination can be calculated based on at least one of the predicted time, predicted driving speed, and predicted driving distance. This predicted SOC can be understood as the remaining SOC when the vehicle reaches the destination. Examples of driving parameter conditions corresponding to each driving parameter are given below.

[0104] The driving parameter condition corresponding to the predicted driving time is: the predicted driving time is less than the fifth threshold.

[0105] The driving parameter condition corresponding to the predicted driving speed is: the predicted driving speed is less than the sixth threshold; in some embodiments, the predicted driving speed being less than the sixth threshold can be further limited to the duration of the predicted driving speed being less than the sixth threshold being less than a time threshold.

[0106] The driving parameter condition corresponding to the predicted driving distance is: the predicted driving distance is less than the seventh threshold.

[0107] The driving parameter condition for predicting SOC is: the predicted SOC is greater than the eighth threshold. For example, the eighth threshold is 10%.

[0108] In some embodiments, if at least one of the driving parameters does not meet the corresponding driving parameter conditions, the battery is heated. For example, if the predicted driving speed is greater than a sixth threshold, such as when the vehicle is about to enter a highway section, the battery will be heated to prevent the SOC from jumping due to insufficient heating.

[0109] In some embodiments, if at least one driving parameter includes destination location information, and the destination location information is a charging station, that is, the at least one driving parameter can be used to go to the charging station for charging, in this operating condition, when the battery temperature is detected to be less than a first threshold, and further, the battery's SOC is less than a third threshold, the battery will be heated in order to ensure fast charging, even if other driving parameters meet the corresponding driving parameter conditions.

[0110] In some embodiments, the associated feature information includes at least one of the vehicle speed or the vehicle's discharge power, and the determination of whether to heat the battery is based on at least one of the vehicle speed or the discharge power.

[0111] If the battery temperature is below the first threshold and the battery's SOC is below the third threshold, and at least one of the following conditions is met: the vehicle speed is 0, or the vehicle's discharge power is less than the ninth threshold, i.e., the second condition includes at least one of the following: the vehicle speed is 0, or the vehicle's discharge power is less than the ninth threshold, then it is determined that battery heating is not required. For example, when the vehicle is in a fully powered-on, undriven condition (i.e., the vehicle speed is equal to 0), the ambient temperature is low. Before driving, the user turns on the air conditioning to warm up the passenger compartment, but the discharge power for heating the passenger compartment is relatively small, generally less than 10kW. That is, the vehicle's discharge power is less than the ninth threshold (e.g., 10kW), the battery heating requirement is low, and battery heating is not required.

[0112] Understandably, if the navigation information is turned on when the vehicle is powered on but not driven, such as when the navigation is being warmed up, at least one driving parameter can be determined based on the navigation information. Based on this at least one driving parameter, it can be determined whether to heat the battery, similar to the situation where the user turns on the air conditioning to warm up the passenger compartment before driving.

[0113] In some embodiments, the associated feature information includes navigation information, which determines that the vehicle will enter a highway section and that the battery needs to be heated.

[0114] In some embodiments, when the vehicle is powered on but not driven, the user turns on the navigation information and determines that the vehicle will enter a highway section based on the navigation information. That is, if the first condition includes the navigation information indicating that the vehicle will enter a highway section, then it is determined that the battery needs to be heated.

[0115] In some embodiments, the battery management system may also heat up the battery one hour before entering the highway, if the battery management system determines that it will enter a highway section based on navigation information, and determines the mileage and estimated duration of the upcoming highway entry, during the transition between road conditions, when the vehicle is traveling at low speed in urban areas.

[0116] Furthermore, heating can be stopped when the battery reaches the temperature corresponding to the high-speed driving speed. That is, heating can be stopped when the battery is heated to the point where the SOC does not change during high-speed driving. For example, when the vehicle speed is less than 80 km / h, heating can be stopped at -2℃; when the vehicle speed is greater than 100 km / h, heating can be stopped at 5℃.

[0117] In some embodiments, when a vehicle is traveling at high speed, the electric drive generates a large amount of heat and waste heat. If the battery does not require heating, the speed of the oil pump or water pump in the powertrain can be reduced to decrease the heat transferred to the environment. In high-speed conditions, if the vehicle has thermal management requirements (e.g., the battery temperature is below a first threshold, and the battery SOC is below a third threshold), it directly responds to the heating command, i.e., heats the battery to prevent SOC fluctuations or insufficient discharge.

[0118] When a vehicle transitions from highway conditions to low-speed urban conditions, for example, when the vehicle speed is less than the fourth threshold, if the battery is in a heated state on the highway, the battery heating will be stopped to reduce energy waste. If the battery heating is not activated on the highway, the battery will remain unheated.

[0119] 204. If the battery temperature is greater than the second threshold and the vehicle's associated feature information meets the third condition, it is determined that the battery will not be cooled.

[0120] The associated feature information includes at least one of the following: battery charging power, ambient temperature of the vehicle, battery SOC, or vehicle speed.

[0121] In some embodiments, the battery temperature continuously rises during high-power discharge of the vehicle, or during charging of the vehicle. When the battery temperature exceeds a second threshold, some embodiments of this disclosure may further determine whether to cool the battery based on associated feature information. If battery cooling is required, it can be understood as responding to a battery cooling command; if battery cooling is not required, it can be understood as not responding to a battery cooling command. The battery cooling command may be triggered when the battery temperature exceeds the second threshold.

[0122] In some embodiments of this disclosure, when the battery temperature is greater than a second threshold, it can be further determined whether the battery needs to be cooled based on associated feature information. For example, if the ambient temperature is low and the vehicle speed is low, there is no need for additional forced cooling, and the battery can be cooled naturally by the low ambient temperature, thereby avoiding additional energy waste and thus helping to improve the driving range.

[0123] The following example illustrates how to determine whether to cool the battery based on associated feature information.

[0124] In some embodiments, the associated feature information includes the ambient temperature of the vehicle and the vehicle speed, and the determination of whether to cool the battery is based on the ambient temperature of the vehicle and the vehicle speed.

[0125] If the detected battery temperature exceeds the second threshold, and the ambient temperature is below the tenth threshold (e.g., 25°C) and the vehicle speed is below the eleventh threshold (e.g., 60 km / h), then the third condition (i.e., the ambient temperature is below the tenth threshold and the vehicle speed is below the eleventh threshold) determines that cooling of the battery is not required. In this condition, the battery's natural cooling effect is enhanced. Even without forced battery cooling, natural cooling can balance or exceed the battery's heat generation. Therefore, not cooling in this condition reduces thermal management energy consumption and increases driving range.

[0126] If the battery temperature exceeds the second threshold, and the ambient temperature of the vehicle exceeds the tenth threshold, and the vehicle's discharge power exceeds the ninth threshold, meaning the vehicle is discharging at high power (e.g., the vehicle speed exceeds the fourth threshold), the battery temperature will continue to rise without battery cooling, posing a risk of limiting the vehicle's power. Therefore, battery cooling is required in this condition.

[0127] In some embodiments, the associated feature information includes at least one of the battery's charging power or the ambient temperature of the vehicle, in which case it can be determined whether to cool the battery based on at least one of the battery's charging power or the ambient temperature of the vehicle.

[0128] When the battery is charging, if the detected battery temperature is greater than a second threshold, and the charging power is less than a twelfth threshold (e.g., the twelfth threshold is 60 kW), and the ambient temperature of the vehicle is less than a thirteenth threshold (i.e., the third condition includes at least one of the following: charging power less than the twelfth threshold, or the ambient temperature of the vehicle is less than the thirteenth threshold), it is determined that the battery will not be cooled. In other words, under this operating condition, the battery can be naturally cooled by the ambient temperature.

[0129] In some embodiments, the associated feature information may include the battery's SOC, the ambient temperature of the vehicle, and the vehicle's speed. In this case, it can be determined whether to cool the battery based on the battery's SOC, the ambient temperature of the vehicle, and the vehicle's speed.

[0130] When the battery is fully charged, if the battery temperature is detected to be higher than the second threshold, and the battery's SOC is higher than the fourteenth threshold (e.g., the fourteenth threshold is 80%), the ambient temperature is lower than the fifteenth threshold, and the vehicle speed is 0 (i.e., the vehicle is in a low-ambient-temperature stationary condition), then it is determined that the battery will not be cooled. In this case, the battery can be naturally cooled by the ambient temperature.

[0131] In some embodiments of this disclosure, before performing steps 202 and 203 above, the user needs to activate the energy-saving mode. For example, the user can activate the energy-saving mode through the portable application description (PAD) of the central control software, or through a physical button, or through a mobile application (APP). In some embodiments, the energy-saving mode can be activated when the vehicle is in Eco mode, Normal mode, or Sport mode.

[0132] Figure 3 is a schematic diagram of a battery temperature control device according to some embodiments. As shown in Figure 3, the battery temperature control device may include an acquisition unit 21 and a determination unit 22.

[0133] The acquisition unit 21 is configured to acquire the battery temperature of the vehicle.

[0134] The determining unit 22 is configured to determine whether to heat or cool the battery based on the battery temperature and associated characteristic information of the vehicle.

[0135] In some embodiments, the associated feature information of the vehicle includes at least one of the following: the vehicle's navigation information, the vehicle's speed, the vehicle's discharge power, the battery's charging power, the ambient temperature of the vehicle, and the battery's SOC.

[0136] In some embodiments, the determining unit 22 is further configured to: if the battery temperature is less than a first threshold and the vehicle's associated feature information satisfies a first condition, determine whether to heat the battery based on the vehicle's associated feature information.

[0137] In some embodiments, the determining unit 22 is further configured to: if the battery temperature is less than a first threshold and the associated feature information of the vehicle meets a second condition, determine that the battery should not be heated.

[0138] In some embodiments, the determining unit 22 is further configured to: determine that the battery should not be cooled if the battery temperature is greater than a second threshold and the associated feature information of the vehicle meets a third condition.

[0139] In some embodiments, the determining unit 22 is further configured to determine that the SOC of the battery is less than a third threshold.

[0140] In some embodiments, the associated feature information includes the vehicle's speed.

[0141] The second condition includes: the vehicle speed is less than the fourth threshold.

[0142] In some embodiments, the associated feature information includes the vehicle's navigation information. The second condition includes: at least one driving parameter of the vehicle satisfies a corresponding driving parameter condition, and the driving parameter is determined by the navigation information.

[0143] In some embodiments, the at least one driving parameter includes at least one of the following: the predicted driving time of the vehicle from the starting point to the destination, the predicted driving speed of the vehicle, the predicted driving distance of the vehicle from the starting point to the destination, and the predicted SOC of the vehicle when it reaches the destination.

[0144] The driving parameter condition corresponding to the predicted driving time is: the predicted driving time is less than the fifth threshold.

[0145] The driving parameter condition corresponding to the predicted driving speed is: the predicted driving speed is less than the sixth threshold.

[0146] The driving parameter condition corresponding to the predicted driving distance is: the predicted driving distance is less than the seventh threshold.

[0147] The driving parameter condition corresponding to the predicted SOC is: the predicted SOC is greater than the eighth threshold.

[0148] In one implementation, the associated feature information includes at least one of the vehicle speed or the vehicle's discharge power; the second condition includes at least one of the following: the vehicle speed is 0, or the vehicle's discharge power is less than a ninth threshold.

[0149] In one implementation, the vehicle's associated characteristic information includes the vehicle's navigation information. A first condition includes: the navigation information indicates that the vehicle will enter a highway section.

[0150] In one implementation, the associated characteristic information of the vehicle includes the ambient temperature of the vehicle and the vehicle speed. The third condition includes: the ambient temperature of the vehicle is less than a tenth threshold, and the vehicle speed is less than an eleventh threshold.

[0151] In one implementation, the associated feature information includes at least one of the battery charging power or the ambient temperature of the vehicle. The third condition includes at least one of the following: when the battery is charging, the charging power is less than a twelfth threshold, or the ambient temperature of the vehicle is less than a thirteenth threshold.

[0152] In one implementation, the associated feature information includes the battery's SOC, the ambient temperature of the vehicle, and the vehicle's speed.

[0153] The third condition includes: when the battery is fully charged, the battery's SOC is greater than the fourteenth threshold, the ambient temperature of the vehicle is less than the fifteenth threshold, and the vehicle's speed is 0.

[0154] The description of the embodiment in Figure 3 can be found in the description of the foregoing method embodiments, and will not be repeated here.

[0155] Figure 4 shows a schematic diagram of another battery temperature control device according to some embodiments. This battery temperature control device can be the battery management system described above, and can be used to implement the steps of the battery temperature control method performed by the battery management system as described above. The battery temperature control device may include: a processor 31, a memory 32, and a bus system 33.

[0156] The memory 32 includes, but is not limited to, RAM, ROM, EPROM, or CD-ROM, and is configured to store related instructions and data. The memory 32 stores executable modules or data structures, or subsets thereof, or extended sets thereof.

[0157] Operation instructions: This includes various operation instructions used to perform various operations.

[0158] Operating system: includes various system programs used to implement various basic business functions and handle hardware-based tasks.

[0159] Figure 4 shows only one memory, but of course, the battery temperature control device may also include multiple memories.

[0160] As shown in Figure 4, the battery temperature control device may further include an input / output device 34, which may be a communication module or a transceiver circuit. In some embodiments of this disclosure, the input / output device 34 is configured to perform the transmission and reception of data or signaling such as motor speed and motor acceleration involved in the above embodiments.

[0161] Processor 31 may be a controller, CPU, general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It may implement or execute the various logic blocks, modules, and circuits described in connection with some embodiments of this disclosure. Processor 31 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0162] In practical applications, the various components of the battery temperature control device are coupled together through a bus system 33. This bus system 33 includes not only a data bus but may also include a power bus, a control bus, and a status signal bus. However, for clarity, all buses are labeled as bus system 33 in Figure 4. For ease of illustration, Figure 4 is only shown schematically.

[0163] It should be noted that in practical applications, the processor in some embodiments of this disclosure can be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in some embodiments of this disclosure.

[0164] It is understood that the memory in some embodiments of this disclosure may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Here, non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memories described in some embodiments of this disclosure are intended to include, but are not limited to, these and any other suitable types of memory.

[0165] Some embodiments of this disclosure also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a computer, implements the methods or steps executed by the controller in the above embodiments.

[0166] Some embodiments of this disclosure also provide a computer program product that, when executed by a computer, implements the methods or steps executed by the controller in the above embodiments.

[0167] This disclosure also provides a vehicle according to some embodiments, and FIG5 is a structural schematic diagram of a vehicle according to some embodiments. As shown in FIG5, the vehicle may include the battery temperature control device described in the foregoing embodiments. The vehicle may also include multiple wheels, seats, on-board power supply, electrical equipment, etc.

[0168] It should be noted that, for the sake of simplicity, each of the above-described embodiments of the battery temperature control method is described as a series of actions. However, those skilled in the art should understand that this disclosure is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this disclosure. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to this disclosure.

[0169] The terms "first," "second," etc., in this disclosure, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps is not limited to the steps listed, but may optionally include steps not listed, or may optionally include other steps inherent to such process, method, product, or apparatus.

[0170] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0171] Although this disclosure has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the intended protection of this disclosure. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. While different dependent claims may recite certain measures, this does not imply that these measures cannot be combined to produce a good effect.

[0172] Those skilled in the art will understand that all or part of the steps in the various method embodiments of any of the above-described battery temperature control methods can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage device, which may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a disk, or an optical disk, etc.

[0173] The foregoing has provided a detailed description of some embodiments of this disclosure. This document uses specific examples to illustrate the principles and implementation methods of a battery temperature control method, apparatus, computer-readable storage medium, and vehicle disclosed herein. The descriptions of the embodiments above are intended to help understand the methods and core ideas of this disclosure. Furthermore, for those skilled in the art, based on the ideas of a battery temperature control method, apparatus, computer-readable storage medium, and vehicle disclosed herein, there will be changes in specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this disclosure.

[0174] Those skilled in the art will recognize that the functions described in this disclosure in one or more of the foregoing examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0175] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this disclosure. It should be understood that the above description is only a specific embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A battery temperature control method, comprising: Obtain the vehicle's battery temperature; Based on the battery temperature and the associated characteristics of the vehicle, it is determined whether to heat or cool the battery.

2. The method according to claim 1, wherein, The associated characteristic information of the vehicle includes at least one of the following: the vehicle's navigation information, the vehicle's speed, the vehicle's discharge power, the battery's charging power, the ambient temperature of the vehicle, and the battery's state of charge (SOC).

3. The method according to claim 1 or 2, wherein, The step of determining whether to heat or cool the battery based on the battery temperature and the associated characteristic information of the vehicle includes: If the battery temperature is less than a first threshold and the associated feature information of the vehicle meets a first condition, it is determined that the battery will be heated.

4. The method according to claim 3, wherein, The associated feature information includes the vehicle's navigation information; The first condition includes: the navigation information indicates that the vehicle will enter a highway section.

5. The method according to claim 1 or 2, wherein, The step of determining whether to heat or cool the battery based on the battery temperature and the associated characteristic information of the vehicle includes: If the battery temperature is less than a first threshold and the associated feature information of the vehicle meets a second condition, it is determined that the battery will not be heated.

6. The method according to claim 5, wherein, The associated feature information includes the vehicle's speed; The second condition includes: the vehicle speed is less than the fourth threshold.

7. The method according to claim 5, wherein, The associated feature information includes the vehicle's navigation information; The second condition includes: each of the at least one driving parameter of the vehicle satisfies the corresponding driving parameter condition; The driving parameters are determined by the navigation information.

8. The method according to claim 7, wherein, The driving parameters include at least one of the following: the predicted driving time of the vehicle from the starting point to the destination, the predicted driving speed of the vehicle, the predicted driving distance of the vehicle from the starting point to the destination, and the predicted SOC of the vehicle when it reaches the destination. The driving parameter condition corresponding to the predicted driving time is: the predicted driving time is less than the fifth threshold. The driving parameter condition corresponding to the predicted driving speed is: the predicted driving speed is less than the sixth threshold. The driving parameter condition corresponding to the predicted driving distance is: the predicted driving distance is less than the seventh threshold. The driving parameter condition corresponding to the predicted SOC is: the predicted SOC is greater than the eighth threshold.

9. The method according to claim 5, wherein, The associated feature information includes at least one of the vehicle speed or the vehicle's discharge power: The second condition includes at least one of the following: the vehicle speed is 0, or the vehicle's discharge power is less than the ninth threshold.

10. The method according to claim 1 or 2, wherein, The step of determining whether to heat or cool the battery based on the battery temperature and the associated characteristic information of the vehicle further includes: If the battery temperature is greater than the second threshold and the associated feature information of the vehicle meets the third condition, it is determined that the battery will not be cooled.

11. The method according to claim 10, wherein, The associated feature information includes the ambient temperature of the vehicle and the vehicle speed; The third condition includes: the ambient temperature of the vehicle is less than the tenth threshold, and the vehicle speed is less than the eleventh threshold.

12. The method according to claim 10, wherein, The associated feature information includes at least one of the battery's charging power or the ambient temperature of the vehicle. The third condition includes at least one of the following: when the battery is being charged, the charging power is less than the twelfth threshold, or the ambient temperature of the vehicle is less than the thirteenth threshold.

13. The method according to claim 10, wherein, The associated feature information includes the battery's SOC, the ambient temperature of the vehicle, and the vehicle's speed. The third condition includes: when the battery is fully charged, the SOC of the battery is greater than the fourteenth threshold, the ambient temperature of the vehicle is less than the fifteenth threshold, and the vehicle speed is 0.

14. The method according to any one of claims 1 to 13, wherein, Before determining whether to heat the battery based on the associated feature information of the vehicle, the method further includes: The state of charge (SOC) of the battery is determined to be less than a third threshold.

15. A battery temperature control device, comprising: The acquisition unit is configured to acquire the vehicle's battery temperature; as well as The determining unit is configured to determine whether to heat or cool the battery based on the battery temperature and associated characteristic information of the vehicle.

16. A battery temperature control device, comprising a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the method according to any one of claims 1 to 14.

17. A computer-readable storage medium for storing a computer program, which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 14.

18. A vehicle comprising a battery temperature control device according to claim 15 or 16.

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