Method, device, vehicle and storage medium for controlling a vehicle coolant level

Abstract

The present application relates to a method, a device, a vehicle and a storage medium for controlling a coolant level of a vehicle, the method comprising the steps of receiving a target temperature to which the coolant of the vehicle is to be adjusted before replacing a battery of the vehicle, wherein the target temperature is determined at least partially based on a temperature of an external coolant at the replacement battery and the coolant of the vehicle is within an allowed level range at the target temperature, determining an adjustable time available for adjusting the coolant temperature before replacing the battery of the vehicle, and determining a temperature adjustment scheme for the coolant of the vehicle based on a current temperature of the coolant, the target temperature and the adjustable time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery cooling, and in particular, to a method for controlling a vehicle coolant level, a vehicle, and a storage medium. BACKGROUND

[0002] Nowadays, replacing a battery at a battery swap station is becoming a popular way to maintain the endurance of an electric vehicle. However, there is a temperature difference between the coolant temperature of the battery pack on the vehicle and the coolant temperature of the battery pack in the battery swap station when replacing the battery. Because the coolant of different temperatures has different densities, after multiple battery replacements, the vehicle coolant level may be too high or too low. This usually requires manual removal or addition of coolant in the existing solution, which undoubtedly increases the workload of after-sales maintenance and causes the battery swap station to be unable to achieve truly unattended operation.

[0003] Therefore, there is a need to provide a mechanism for controlling a vehicle coolant level. SUMMARY

[0004] Embodiments of the present application provide a method, device, vehicle, and storage medium for controlling a vehicle coolant level to prevent the coolant level from being too high or too low due to temperature fluctuations.

[0005] According to an aspect of the present application, a method for controlling a vehicle coolant level is provided, the method comprising the steps of: receiving a target temperature to which the vehicle coolant is to be adjusted before replacing a vehicle battery, wherein the target temperature is determined based at least in part on a temperature of an external coolant at the replacement battery, and the vehicle coolant is within an allowable level range at the target temperature; determining an adjustable time available for adjusting the temperature of the vehicle coolant before replacing the vehicle battery; and determining a temperature adjustment scheme for the vehicle coolant based on a current temperature of the vehicle coolant, the target temperature, and the adjustable time.

[0006] In some embodiments of the present application, the target temperature is optionally determined by the steps of: receiving a cumulative temperature difference value for the vehicle battery, wherein the cumulative temperature difference value is obtained by accumulating historical temperature differences of the vehicle battery before and after replacing the vehicle battery; determining the temperature of the external coolant as an initial target temperature of the vehicle coolant; and subtracting the cumulative temperature difference value from the initial target temperature to obtain the target temperature.

[0007] In some embodiments of the present application, the adjustable time includes an expected time required for the vehicle to travel to a destination for replacing the vehicle battery.

[0008] In some embodiments of the present application, optionally, the expected time required to travel to the destination is determined by a navigation system of the vehicle according to a route to the destination and road conditions.

[0009] In some embodiments of the present application, optionally, determining the temperature adjustment scheme of the vehicle coolant according to the current temperature of the vehicle coolant, the target temperature and the adjustable time comprises: determining an energy required to adjust the vehicle coolant from the current temperature to the target temperature; and determining a time to adjust the temperature of the vehicle coolant within a range less than or equal to the adjustable time.

[0010] In some embodiments of the present application, optionally, the temperature adjustment scheme comprises at least one of: reducing the temperature of the vehicle coolant by switching the vehicle coolant to a mode of actively cooling the vehicle battery; and increasing the temperature of the vehicle coolant by switching the vehicle coolant to a mode of actively heating the vehicle battery.

[0011] In some embodiments of the present application, optionally, the method further comprises at least one of: stopping adjusting the temperature of the vehicle coolant in a case where it is determined to cancel replacing the vehicle battery; stopping adjusting the temperature of the vehicle coolant in a case where it is determined to charge through a charging gun; stopping adjusting the temperature of the vehicle coolant in a case where it is determined that the state of charge of the vehicle battery is lower than a threshold; and stopping adjusting the temperature of the vehicle coolant in a case where it is determined that replacing the vehicle battery is completed.

[0012] According to another aspect of the present application, there is provided an apparatus for controlling a vehicle coolant level, the apparatus comprising: a memory configured to store instructions; and a processor configured to execute the instructions to perform any of the methods as described above.

[0013] According to another aspect of the present application, there is provided a vehicle comprising any of the apparatuses as described above.

[0014] According to another aspect of the present application, there is provided a computer-readable storage medium having stored therein instructions, which when executed by a processor, cause the processor to perform any of the methods as described above.

[0015] Some embodiments of the present application provide a method, apparatus, vehicle and storage medium for controlling a vehicle coolant level, which can be used to control the level of the vehicle coolant, prevent too much or too little coolant, and thus ensure the normal operation of the battery cooling system. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other objects and advantages of the present application will become more apparent by describing in detail the following embodiments thereof from a consideration of the accompanying drawings in which like reference characters refer to like parts throughout the several views.

[0017] Figure 1 A method of controlling a vehicle coolant level is shown according to an embodiment of the present application;

[0018] Figure 2 A vehicle is shown according to an embodiment of the present application;

[0019] Figure 3 A vehicle is shown according to an embodiment of the present application;

[0020] Figure 4 A partial view of a water tank storing vehicle coolant is shown according to an embodiment of the present application;

[0021] Figure 5 A coolant level change is shown according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] For brevity and clarity of presentation, the principles of the present application are described herein primarily with reference to exemplary embodiments thereof. However, those skilled in the art will readily appreciate that the same principles are equally applicable to all types of methods, devices, vehicles and storage media for controlling a vehicle coolant level, and can be implemented in any such method, device, vehicle or storage medium, any such variations not departing from the true spirit and scope of the present application.

[0023] There is a portion of coolant in the battery pack of a vehicle, which is in communication with the coolant in the vehicle coolant water tank, and together forms the cooling circulation system of the vehicle. The coolant in the vehicle cooling circulation system is referred to as vehicle coolant in the context of the present application, so as to distinguish from external coolant appearing hereinafter. For brevity of presentation, unless otherwise specified, coolant appearing hereinafter refers to vehicle coolant, unless it can be determined from its context that the portion of coolant is external coolant.

[0024] If the vehicle is to be recharged by replacing the battery pack, the temperature of the coolant in the incoming battery pack is consistent with that of the coolant (also referred to as external coolant in the present application) in the storage point (e.g. battery swap station) of the battery pack. Since the volume of coolant inside the battery pack is constant, if the temperature difference of the coolant inside the battery pack before and after the battery pack is replaced is large, the mass difference between the coolant supplied by the incoming battery pack and the coolant removed from the vehicle-side battery pack will also be large. Therefore, when the temperature of the coolant in the replaced battery pack is consistent with that of the entire vehicle-side coolant loop, it will cause a change in the liquid level of the entire vehicle-side coolant loop.

[0025] An aspect of the present application provides a method for controlling a coolant level of a vehicle, such as Figure 1 As shown, the method 100 for controlling a coolant level of a vehicle (hereinafter referred to as method 100) includes the following steps: receiving a target temperature to which the coolant of the vehicle is to be adjusted before the vehicle battery is replaced in step S102; determining an adjustable time available for adjusting the temperature of the coolant before the vehicle battery is replaced in step S104; and determining a temperature adjustment scheme for the coolant according to the current temperature of the coolant, the target temperature and the adjustable time in step S106. The method 100 can be executed by the vehicle side, specifically, by the processor (including the vehicle controller, the vehicle control unit, etc.) and its supporting modules in the vehicle side. The method 100 can adjust the temperature of the coolant in the battery pack to be replaced by actively adjusting the temperature of the vehicle coolant before battery replacement, thereby adjusting the quality of the coolant in the battery pack to be replaced, so as to actively achieve the effect of discharging or supplementing the vehicle coolant. In this way, the coolant level of the vehicle can be controlled to prevent alarm caused by too high or too low liquid level after replacing the battery pack.

[0026] The method 100 receives the target temperature to which the coolant is to be adjusted before the vehicle battery is replaced in step S102. The target temperature can be determined based at least in part on the temperature of the external coolant at the replaceable vehicle battery. On the other hand, the coolant is within the allowable liquid level range at the target temperature, thereby achieving control of the coolant level.

[0027] The vehicle battery (e.g., in a charged state or a full charged state without charging) in the battery swap station is also associated with a system for controlling the battery temperature by the coolant. Generally, the temperature of the coolant in the battery swap station is maintained constant, so the temperature of the replaceable vehicle battery in the battery swap station is also constant. In some examples, the constant temperature of the coolant in the battery swap station (i.e., the constant temperature of the vehicle battery in the battery swap station) can be used as the target temperature, so that the coolant of the vehicle is adjusted to the target temperature before the battery is replaced. In this way, it can be prevented that the quality of the newly replaced battery is too different from the quality of the original battery, thereby preventing the liquid level of the coolant from exceeding the allowable liquid level range due to excessive expansion or contraction of the water tank storing the coolant after the vehicle coolant system re-establishes thermal equilibrium.

[0028] Figure 4A partial view of a water tank storing vehicle coolant is shown according to one embodiment of the present application. The current liquid level (liquid surface height) 601 of the coolant in the water tank 60 is shown, and the maximum allowable liquid level 602 and the minimum allowable liquid level 603 are also shown in dashed lines. The current liquid level 601 is between the maximum allowable liquid level 602 and the minimum allowable liquid level 603, and thus does not trigger an alarm operation. When the liquid level of the coolant exceeds the range defined by the maximum allowable liquid level 602 and the minimum allowable liquid level 603, the cooling system of the vehicle will alarm to remind the user to extract or add coolant. In some examples, the total amount of coolant in the water tank 60 can be configured according to the following condition: when the coolant is below the constant temperature of the coolant in the battery swap station, its liquid level is approximately at the middle level between the maximum allowable liquid level 602 and the minimum allowable liquid level 603. In this way, the coolant will have equal upward or downward liquid level changes, and thus the tolerance to temperature changes is also higher.

[0029] Returning to Figure 1 , the method 100 determines an adjustable time available for adjusting the temperature of the coolant before the vehicle battery is replaced in step S104. In some embodiments of the present application, the adjustable time includes the time expected to be required for the vehicle to travel to the destination of the vehicle battery replacement. In some examples, the time expected to be required for the vehicle to travel to the destination is determined by the navigation system of the vehicle according to the distance and road conditions of the travel to the destination. The vehicle can perform the coolant temperature control operation during this adjustable time to cause the coolant in the vehicle to reach the preset temperature before reaching the battery swap station.

[0030] The method 100 determines a temperature adjustment scheme for the coolant according to the current temperature of the coolant, the target temperature, and the adjustable time in step S106. Specifically, in some embodiments of the present application, determining the temperature adjustment scheme for the coolant according to the current temperature, the target temperature, and the adjustable time in step S106 can specifically include the following: (1) determining the energy required to adjust the coolant from the current temperature to the target temperature; (2) determining the time to adjust the temperature of the coolant within the range less than or equal to the adjustable time. From this, the energy required for temperature control and the time to release the energy for pre-cooling or pre-heating the coolant are determined. The vehicle can release the battery energy for pre-cooling or pre-heating the coolant in the most cost-effective way within this time.

[0031] As mentioned above, in some examples, the temperature adjustment scheme can include lowering the temperature of the coolant (or pre-cooling) by switching the coolant to the active cooling mode for the vehicle battery, and increasing the temperature of the coolant (or pre-heating) by switching the coolant to the active heating mode for the vehicle battery.

[0032] However, in some examples, the actual heat exchange process can not always be idealized, and directly taking the constant temperature of the cooling liquid in the battery swap station as the target temperature can cause errors in actual situations, and even cause the accumulation of errors after multiple battery replacements. Figure 5 The cooling liquid level change is shown according to an embodiment of the present application, and there is a difference in the total level of the cooling liquid before and after each battery replacement (6 times of battery replacement are shown in the figure). As understood, the level change is caused by temperature change. That is, although the target temperature is set before replacing the battery, there can be a gap between the actual situation and the theoretical prediction, and therefore the actual temperatures of the replaced battery and the vehicle are not equal to the target temperature after the heat balance between the two is established. Therefore, this error needs to be considered in the subsequent procedure.

[0033] For example, in step S102, the target temperature can be determined by the following steps to reduce the accumulated error caused by the mismatch between theory and practice: first, the cumulative temperature difference value of the vehicle battery is received. Since the temperature of the vehicle battery is equivalent to the temperature of the cooling liquid in the vehicle battery, it can also be used to characterize the floating volume of the cooling liquid. The cumulative temperature difference value is obtained by accumulating the temperature difference of the vehicle battery before and after replacing the vehicle battery in history, which can be processed by a cloud server or the like, and can be pulled from the server before each battery replacement. Second, the temperature of the external cooling liquid at the replaceable vehicle battery is determined as the initial target temperature of the cooling liquid. Finally, the initial target temperature is subtracted by the cumulative temperature difference value to obtain the target temperature.

[0034] Continuing to refer to Figure 5 wherein the level difference AV1 of the two times after the first battery replacement is shown, and the level difference is caused by the temperature difference AT1. The process of determining AT1 according to AV1 is omitted here, as it belongs to general physical knowledge. By analogy, the level differences AV2, …, AVN caused by the second, …, Nth battery replacement and their corresponding temperature differences AT2, …, ATN can be determined respectively. Subsequently, AT1, …, ATN can be accumulated, and such an accumulated value is the cumulative error, which can be considered to eliminate its influence when determining the target temperature. Specifically, the cumulative temperature difference value can be subtracted from the initial target temperature to obtain the target temperature. It should be understood that the cumulative temperature difference value can be negative. If the cooling liquid is accumulated at the vehicle end, the temperature of the cooling liquid circuit needs to be adjusted to be lower than the temperature of the external cooling liquid, so that the mass of the replaced cooling liquid is greater than that of the supplemented cooling liquid, and thus the accumulated error can be eliminated. The opposite is also true.

[0035] In some embodiments of the present application, the method 100 further comprises (not shown in the figure): in the case of determining to cancel the replacement of the vehicle battery, stopping the adjustment of the temperature of the coolant. If the vehicle no longer sends a pre-cooling / pre-heating request signal (for example, the user cancels the battery replacement order) about the coolant, the method 100 further comprises the step of exiting the pre-cooling / pre-heating, so as to timely reduce unnecessary energy consumption (both pre-cooling and pre-heating need to consume the energy of the battery and the like).

[0036] In some embodiments of the present application, the method 100 further comprises (not shown in the figure): in the case of determining to charge through the charging gun, stopping the adjustment of the temperature of the coolant. At this time, it indicates that the user has selected other ways to supplement the energy of the vehicle, so the pre-cooling / pre-heating of the coolant can be stopped, and unnecessary energy consumption can be timely reduced.

[0037] In some embodiments of the present application, the method 100 further comprises (not shown in the figure): in the case of determining that the state of charge of the vehicle battery is lower than a threshold, stopping the adjustment of the temperature of the coolant. When the battery power is too low, using the battery to pre-cool / pre-heat the coolant will consume more energy, thereby affecting the endurance of the vehicle. Therefore, the coolant can no longer be pre-cooled / pre-heated when the battery power is low.

[0038] In some embodiments of the present application, the method 100 further comprises (not shown in the figure): in the case of determining to complete the replacement of the vehicle battery, stopping the adjustment of the temperature of the coolant. After the user removes the replaced battery from the vehicle and installs the replacement battery, the execution can be stopped regardless of whether the specified pre-cooling / pre-heating scheme is executed. This is because after the replacement battery is installed, the coolant in the battery will also be connected with the coolant in the vehicle and exchange heat, and at this time, it will become meaningless to pre-cool / pre-heat the coolant.

[0039] Another aspect of the present application provides a vehicle, such as Figure 2 As shown, the vehicle 20 comprises a vehicle machine controller 201, a vehicle control unit 202, and an optional navigation system 203. The vehicle 20 can realize the control of the liquid level of the coolant of the vehicle 20, and prevent the alarm caused by the too high or too low liquid level. The working processes of the vehicle machine controller 201, the vehicle control unit 202, and the navigation system 203 of the vehicle 20 can be carried out with reference to the specific steps of the method 100 in the above, and the related contents are incorporated herein, and the text will not be described here due to the limited space.

[0040] The vehicle controller 201 is configured to receive a target temperature to which the coolant is to be adjusted before the vehicle battery is replaced, wherein the target temperature is determined based at least in part on a temperature of the external coolant at the replaceable vehicle battery, and the coolant is within an allowable level range at the target temperature, and determine an adjustable time available for adjusting the temperature of the coolant before the vehicle battery is replaced, and the vehicle control unit 202 is configured to determine a temperature adjustment scheme of the coolant according to the current temperature, the target temperature and the adjustable time.

[0041] In some embodiments of the application, the vehicle controller 201 is configured to receive a cumulative temperature difference value of the vehicle battery, wherein the cumulative temperature difference value is obtained by accumulating historically temperature differences of the vehicle battery before and after the vehicle battery is replaced, determine a temperature of the external coolant at the replaceable vehicle battery as an initial target temperature of the coolant, and subtract the cumulative temperature difference value from the initial target temperature to obtain the target temperature.

[0042] In some embodiments of the application, the adjustable time includes a time expected to be required for the vehicle 20 to travel to a destination where the vehicle battery is replaced.

[0043] In some embodiments of the application, the vehicle 20 further comprises a navigation system 203 configured to determine the time expected to be required for traveling to the destination according to a route and a road condition of traveling to the destination.

[0044] In some embodiments of the application, the vehicle control unit 202 is configured to determine an energy required for adjusting the coolant from the current temperature to the target temperature, and determine a time for adjusting the temperature of the coolant within a range less than or equal to the adjustable time.

[0045] In some embodiments of the application, the temperature adjustment scheme includes at least one of: reducing the temperature of the coolant by switching the coolant to a mode of actively cooling the vehicle battery; and increasing the temperature of the coolant by switching the coolant to a mode of actively heating the vehicle battery.

[0046] In some embodiments of the application, the vehicle control unit 202 is further configured to stop adjusting the temperature of the coolant in a case where it is determined that the replacement of the vehicle battery is cancelled.

[0047] In some embodiments of the application, the vehicle control unit 202 is further configured to stop adjusting the temperature of the coolant in a case where it is determined that the vehicle battery is charged through a charging gun.

[0048] In some embodiments of the application, the vehicle control unit 202 is further configured to stop adjusting the temperature of the coolant in a case where it is determined that a state of charge of the vehicle battery is lower than a threshold value.

[0049] In some embodiments of the present application, the vehicle control unit 202 is further configured to stop adjusting the temperature of the coolant upon determining that the replacement of the vehicle battery is completed.

[0050] Turning to Figure 3 To further illustrate the working principle of the vehicle 20, Figure 3 The user terminal application 40, the cloud server 30 and the battery replacement station 50 cooperating with the vehicle 20 are further shown in the figure. Several processes are also shown in the figure, and the serial numbers of the processes are marked in the circles.

[0051] Process ①: The cloud server 30 receives the battery replacement request issued by the user terminal application 40, and the cloud server 30 accumulates the temperature difference of the coolant of the battery pack before and after each battery replacement, and this temperature difference is considered in the target temperature of the battery replacement request.

[0052] Process ②: The battery replacement station 50 and the cloud server 30 interact, and the battery replacement station 50 uploads the battery pack coolant temperature information to the cloud.

[0053] Process ③: The vehicle control unit (VCU) 202 of the vehicle 20 uploads the battery pack temperature and other information on the vehicle to the cloud server 30; the cloud server 30 calculates the target temperature of this battery replacement based on the battery pack temperature of the battery replacement station 50 and the battery pack temperature on the vehicle, and issues the target temperature and the battery replacement request signal to the vehicle control unit 201.

[0054] Process ④: The vehicle control unit 201 receives GPS navigation information and determines how long it will take to reach the battery replacement station.

[0055] Process ⑤: The vehicle control unit 202 uploads the battery pack temperature of the vehicle 20 and the pre-cooling / pre-heating logic due to special reasons to the vehicle control unit 201; the vehicle control unit 201 calculates the approximate final battery replacement time based on the battery replacement order time given by the cloud and the navigation time, and issues the final battery replacement time to the vehicle control unit 202. The vehicle control unit 201 also issues the pre-cooling / pre-heating request signal and the target temperature to the vehicle control unit 202.

[0056] In the subsequent processes (not further shown in the figure): After receiving the pre-cooling / pre-heating request, the target temperature and the battery replacement time from the vehicle control unit 201, the vehicle control unit 202 determines the difference between the current battery temperature and the target temperature, and determines the time to start pre-cooling / pre-heating to achieve the target temperature as much as possible while saving energy.

[0057] If the battery on the vehicle needs to be pre-cooled according to the temperature difference between the battery temperature and the target temperature, the water circuit on the vehicle is switched to the battery active cooling mode; if the battery on the vehicle needs to be pre-heated according to the temperature difference between the battery temperature and the target temperature, the water circuit on the vehicle is switched to the battery active heating mode; if the vehicle control unit 201 no longer sends the pre-cooling / pre-heating request signal (order cancellation), the pre-cooling / pre-heating operation is exited; if the vehicle control unit 202 identifies that the vehicle has been plugged in for charging, the pre-cooling / pre-heating operation is exited, and the exit reason is fed back to the vehicle control unit 201, so that the vehicle control unit 201 stops sending the pre-cooling / pre-heating request signal; if the battery SOC of the vehicle is too low, the pre-cooling / pre-heating operation is exited, and the exit reason is fed back to the vehicle control unit 201, so that the vehicle control unit 201 stops sending the pre-cooling / pre-heating request signal; if the battery swap is completed, the vehicle control unit 201 stops sending the pre-cooling / pre-heating request, and the pre-cooling / pre-heating operation is exited.

[0058] Another aspect of the present application provides a device for controlling the level of a vehicle coolant, the device comprising: a memory configured to store instructions; and a processor configured to execute the instructions to perform any of the methods described above.

[0059] Another aspect of the present application provides a vehicle comprising any of the devices for controlling the level of a vehicle coolant described above. The vehicle herein can have the architecture described above with respect to the vehicle 20, and comprises separate processing units and execution units such as the vehicle control unit 201, the vehicle control unit 202, the navigation system 203, etc.

[0060] According to another aspect of the present application, a computer-readable storage medium is provided, wherein instructions are stored, when executed by a processor, cause the processor to perform any of the methods for controlling the level of a vehicle coolant described above. The computer-readable medium referred to in the present application includes various types of computer storage media that can be accessed by a general or special purpose computer. For example, the computer-readable medium can include RAM, ROM, EPROM, EEPROM, E 2A computer readable medium can be any tangible, non-transitory medium that can be read by a computer. Examples of computer readable media include magnetic disks; optical disks such as CDs and DVDs; ROMs; RAMs; flash memory; and hardware devices that are specially configured to store and perform program code, such as ASICs, PALs, PLAs, FPGAs, and SPLAs. A computer program product can include a computer readable medium. A computer program product can also include packaging materials.

[0061] According to the control strategy proposed in some embodiments of the present application, the amount of coolant in the vehicle and the amount of coolant in the battery swap station can be kept within a safe range without human intervention even after multiple battery swaps. This can improve the user's driving experience and facilitate unattended battery swapping. The above is merely a specific implementation of the present application, but the scope of protection of the present application is not limited thereto. Those skilled in the art can think of other feasible changes or replacements within the technical scope disclosed in the present application, and such changes or replacements are all encompassed within the scope of protection of the present application. The embodiments and features in the embodiments can also be combined with each other without conflict. The scope of protection of the present application is subject to the description of the claims.

Claims

1. A method of controlling the level of a coolant in a vehicle, characterized by, The method comprises: receiving a target temperature to which the vehicle coolant is to be adjusted before replacement of the vehicle battery, wherein the target temperature is determined based at least in part on a temperature of an external coolant at the replacement battery, and the vehicle coolant is within an allowable level range at the target temperature, wherein the target temperature is determined by: receiving a cumulative temperature difference value for the vehicle battery, wherein the cumulative temperature difference value is accumulated from historically measured temperature differences of the vehicle battery before and after replacement of the vehicle battery, determining the temperature of the external coolant as an initial target temperature for the vehicle coolant, and subtracting the cumulative temperature difference value from the initial target temperature to obtain the target temperature; determining an adjustable time available for adjusting the temperature of the vehicle coolant before replacement of the vehicle battery; and determining a temperature adjustment scheme for the vehicle coolant based on a current temperature of the vehicle coolant, the target temperature, and the adjustable time.

2. The method of claim 1, wherein, The adjustable time comprises a time expected to be required for the vehicle to travel to a destination for replacement of the vehicle battery.

3. The method of claim 2, wherein, The time expected to be required for the vehicle to travel to the destination is determined by a navigation system of the vehicle based on a route and road conditions to the destination.

4. The method of claim 1, wherein, Determining a temperature adjustment scheme for the vehicle coolant based on a current temperature of the vehicle coolant, the target temperature, and the adjustable time comprises: determining an energy required to adjust the vehicle coolant from the current temperature to the target temperature; and determining a time to adjust the temperature of the vehicle coolant within a range less than or equal to the adjustable time.

5. The method of claim 1, wherein, The temperature adjustment scheme comprises at least one of: reducing the temperature of the vehicle coolant by switching the vehicle coolant to an active cooling mode for the vehicle battery; and increasing the temperature of the vehicle coolant by switching the vehicle coolant to an active heating mode for the vehicle battery.

6. The method of claim 1, wherein, The method further comprises at least one of: stopping adjusting the temperature of the vehicle coolant upon determining that replacement of the vehicle battery is cancelled; stopping adjusting the temperature of the vehicle coolant upon determining that charging through a charging gun is performed; stopping adjusting the temperature of the vehicle coolant upon determining that a state of charge of the vehicle battery is below a threshold value; and stopping adjusting the temperature of the vehicle coolant upon determining that replacement of the vehicle battery is completed. The apparatus comprises:

7. An apparatus for controlling the level of a vehicle coolant fluid, characterized by a memory configured to store instructions; and a processor configured to execute the instructions to perform the method of any one of claims 1-6. The vehicle comprises the apparatus of claim 7.

8. A vehicle characterized by comprising: The instructions, when executed by the processor, cause the processor to perform the method of any one of claims 1-6.

9. A computer-readable storage medium having stored therein instructions, the computer-readable storage medium comprising: ​

Images