Vehicle battery temperature regulation method, electronic device, and vehicle

Abstract

The present disclosure provides a vehicle battery temperature adjusting method, an electronic device and a vehicle, and relates to the field of vehicle control. In response to determining that a vehicle battery is in a power supply state and the vehicle needs to be charged during travel to a destination, the remaining power of the vehicle and the remaining distance to a charging location are obtained. In response to determining that the difference between the travel distance corresponding to the remaining power and the remaining distance is within a preset distance range, the current battery temperature is adjusted based on the ambient temperature and the battery temperature required during the charging process, so that the adjusted current battery temperature meets the fast charging requirement, thereby ensuring the safety performance and service life of the battery and shortening the fast charging time.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of vehicle control, and particularly relates to a vehicle battery temperature adjustment method, an electronic device and a vehicle. BACKGROUND

[0002] With the rapid development of the vehicle technology field, vehicles have become an important means of transportation in people's daily life. In order to shorten the charging time, the current vehicle battery usually supports fast charging mode.

[0003] When the battery is fast charging, the battery temperature needs to be accurately controlled. Too high or too low temperature can have adverse effects on the battery, and even exist safety hazards. SUMMARY

[0004] Therefore, the purpose of the present disclosure is to provide a vehicle battery temperature adjustment method, an electronic device and a vehicle, so as to solve the problem that the temperature does not meet the fast charging demand when the vehicle battery is fast charging, and safety hazards exist.

[0005] To achieve the above purpose, the first aspect of the present disclosure provides a vehicle battery temperature adjustment method, which comprises:

[0006] In response to determining that the vehicle battery is in a power supply state and the vehicle needs to be charged during the process of driving to the destination, the remaining power of the vehicle and the remaining distance to the charging location are obtained.

[0007] In response to determining that the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, the current battery temperature is adjusted based on the ambient temperature and the required battery temperature during the charging process.

[0008] Based on the same inventive concept, the second aspect of the present disclosure provides a vehicle battery temperature adjustment device, which comprises:

[0009] The data acquisition module is configured to, in response to determining that the vehicle battery is in a power supply state and the vehicle needs to be charged during the process of driving to the destination, obtain the remaining power of the vehicle and the remaining distance to the charging location.

[0010] The adjustment module is configured to, in response to determining that the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, adjust the current battery temperature based on the ambient temperature and the required battery temperature during the charging process.

[0011] Based on the same inventive concept, the third aspect of the present disclosure provides an electronic device, which comprises a memory, a processor and a computer program stored in the memory and executable by the processor, and the processor implements the vehicle battery temperature adjustment method as described above when executing the computer program.

[0012] Based on the same inventive concept, a fourth aspect of the present disclosure provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the vehicle battery temperature adjustment method as described above.

[0013] Based on the same inventive concept, a fifth aspect of the present disclosure provides a vehicle comprising the vehicle battery temperature adjustment apparatus of the second aspect, the electronic device of the third aspect, or the storage medium of the fourth aspect.

[0014] As can be seen from the above, the present disclosure provides a vehicle battery temperature adjustment method, an electronic device, and a vehicle. In response to determining that the vehicle battery is in a power supply state and that charging is needed during the process of the vehicle traveling to a destination, the remaining power of the vehicle and the remaining distance to the charging location are obtained. It is determined whether the difference between the travel distance corresponding to the remaining power and the remaining distance is within a preset distance range. If the difference between the travel distance corresponding to the remaining power and the remaining distance is within the preset distance range, it indicates that the current remaining power of the vehicle is sufficient for the vehicle to travel to the charging location for charging. At this time, the ambient temperature and the charging process required temperature are determined. The charging process required temperature is the optimal temperature required by the vehicle for fast charging. Based on the ambient temperature and the charging process required battery temperature, the current battery temperature is adjusted so that the adjusted current battery temperature meets the fast charging requirement and shortens the fast charging time. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present disclosure or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art descriptions. Obviously, the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0016] Figure 1 A flowchart of the vehicle battery temperature adjustment method of the embodiments of the present disclosure;

[0017] Figure 2 A structural block diagram of the vehicle battery temperature adjustment apparatus of the embodiments of the present disclosure;

[0018] Figure 3 A structural schematic diagram of the electronic device of the embodiments of the present disclosure. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions, and advantages of the present disclosure clearer, the following will further describe the present disclosure in detail with specific embodiments and with reference to the drawings.

[0020] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the embodiments of the present disclosure shall have the common meaning understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second", and similar terms used in the embodiments of the present disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are merely used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0021] The terms involved in the present disclosure are explained as follows:

[0022] PTM function: Predictive thermal management function (PTM), in the present disclosure, the predictive thermal management function represents the battery heating or cooling function.

[0023] With the rapid development of the vehicle technology field, vehicles have become an important means of transportation in people's daily life. In order to shorten the charging time, the current vehicle battery usually supports fast charging mode.

[0024] When the battery is fast charging, the temperature of the battery needs to be accurately controlled, and too high or too low temperature can have adverse effects on the battery, and even exist safety hazards.

[0025] The existing fast charging pile will perform a battery temperature adjustment operation of heating or cooling before charging for the vehicle battery that does not meet the fast charging temperature requirement, so as to meet the fast charging temperature requirement. However, the battery temperature adjustment operation will inevitably consume time and increase the charging process time, which cannot meet the time requirement of users for fast charging, and to some extent, increases the occupancy rate of each charging pile, affecting the charging demand of other users.

[0026] Based on the above problems, the applicant finds that for a vehicle with sufficient power, the battery can be temperature-regulated by the vehicle itself in advance based on the required battery temperature for the charging process before reaching the charging station, so that the battery temperature meets the fast charging requirement when the vehicle reaches the charging station, and fast charging is directly performed after connecting with the charging pile, thereby saving the aforementioned battery temperature regulation process by the fast charging pile and saving fast charging time. However, the applicant further finds that when the ambient temperature is low, if the battery is heated only to reach the required battery temperature for the subsequent fast charging process, more power is consumed, and the normal power supply of other high-power devices (such as air conditioners) by the battery can be affected. In this case, a suitable heating target temperature can be found based on the ambient temperature, although the heating target temperature can be lower than the required battery temperature for the charging process, but the heating target temperature will not greatly affect the energy consumption of the vehicle to ensure the normal use of other functions of the vehicle, and the pre-heating behavior will also shorten the battery temperature regulation time of the subsequent fast charging pile and further shorten the charging process time.

[0027] Based on the above description, when the vehicle itself regulates the temperature of the battery, the applicant considers not only the required battery temperature for the charging process but also the key factor of the ambient temperature to balance the energy consumption control of the vehicle and the time control of the subsequent fast charging process.

[0028] Based on the above description, the embodiment proposes a vehicle battery temperature regulation method, which is executed by a vehicle controller, as shown in the following steps. Figure 1 The method comprises the following steps.

[0029] In step 101, in response to determining that the vehicle battery is in a power supply state and needs to be charged during the process of driving the vehicle to the destination, the remaining power of the vehicle and the remaining distance to the charging location are obtained.

[0030] The vehicle battery state includes a power supply state, a charging state, a discharging state, and a hibernation state. The power supply state referred to in the embodiment refers to a state in which the battery provides power for various electrical devices (such as vehicle lights, audio, air conditioners, etc.) of the vehicle during the driving process of the vehicle.

[0031] In specific implementation, the vehicle controller obtains the vehicle battery state, and when it is determined that the vehicle battery is in a power supply state and needs to be charged during the process of driving the vehicle to the destination, the remaining power of the vehicle and the remaining distance to the charging location are obtained.

[0032] There can be multiple charging locations between the current position of the vehicle and the destination, and in this case, the charging location closest to the current position of the vehicle is selected as the charging location referred to in the embodiment, that is, the remaining distance is the distance between the current position of the vehicle and the charging location closest to the current position.

[0033] For the above determination of whether the vehicle needs to be charged during driving to the destination, the specific manner can be:

[0034] Manner one: if the vehicle navigation is in an open state and the set destination is a direct current charging station, it indicates that the vehicle needs to be fast charged.

[0035] Manner two: if the vehicle navigation is in an open state and the set destination is A (A is not a charging station), and a charging instruction is received during driving, it indicates that the vehicle needs to be charged. The user sends the charging instruction in at least one of the following ways: through an in-vehicle physical button, through a virtual button, through voice, through a gesture, etc.

[0036] The position of the in-vehicle physical button includes at least one of the following: steering wheel, door, central armrest, seat, etc. The physical button can be a separately set button or an existing button. If it is an existing button, different functions can be achieved through different operation modes. For example, an existing voice recognition button in the vehicle can send a charging instruction by pressing for a preset time.

[0037] The virtual button is a button on the in-vehicle display screen, and the in-vehicle display screen includes a main driver display screen, a co-driver display screen, and a rear display screen.

[0038] For example, when generating a charging instruction through voice, the user says "go to the charging station to charge", which indicates that the vehicle needs to be charged. It can be understood that the above opening voice information is only used as an example for illustration. The user can also pre-set the voice information corresponding to the charging instruction, and after saying the voice information corresponding to the charging instruction, it indicates that the vehicle needs to be charged.

[0039] Another example, when generating a charging instruction through a gesture, the user opens his palm in front of the in-vehicle camera, which indicates that the vehicle needs to be charged. It can be understood that the above gesture is only used as an example for illustration, and the user can also pre-set the gesture information corresponding to the charging instruction. After recognizing the gesture information corresponding to the charging instruction, it indicates that the vehicle needs to be charged.

[0040] Step 102, in response to determining that the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, adjusting the current battery temperature based on the ambient temperature and the battery temperature required during the charging process.

[0041] In specific implementation, the driving distance corresponding to the remaining power is determined, which is the maximum distance that the vehicle can currently travel.

[0042] The determination of the driving distance corresponding to the remaining electric quantity can be obtained through a vehicle instrument panel, or the driving speed and the energy consumption per unit time can be obtained, the remaining driving time is calculated according to the remaining electric quantity and the energy consumption per unit time, and the driving distance corresponding to the remaining electric quantity is determined according to the remaining driving time and the driving speed.

[0043] The difference between the driving distance corresponding to the remaining electric quantity and the remaining distance to the charging location is calculated, and it is determined whether the difference satisfies a preset distance range. If yes, the ambient temperature is obtained, and the battery temperature required for the charging process is determined, wherein the battery temperature required for the charging process is the optimal temperature required when the vehicle is fast-charged. The current battery temperature is adjusted based on the ambient temperature and the battery temperature required for the charging process, that is, the PTM function is activated.

[0044] In the embodiment, the preset distance range can be greater than a first preset distance. The first preset distance can be 20 km as an example. If the difference between the driving distance corresponding to the remaining electric quantity and the remaining distance is greater than the first preset distance, it means that the current remaining electric quantity of the vehicle is sufficient for the vehicle to drive to the charging station for charging, and it also means that the battery has sufficient electric quantity to support the execution of the PTM function.

[0045] In the embodiment, the preset distance range can also be greater than a first preset distance and less than a second preset distance. The first preset distance can be 20 km as an example, and the second preset distance can be 30 km as an example. If the difference between the driving distance corresponding to the remaining electric quantity and the remaining distance is between the first preset distance and the second preset distance, it means that the current remaining electric quantity of the vehicle is sufficient for the vehicle to drive to the charging station for charging, and it also means that the battery has sufficient electric quantity to support the execution of the PTM function. At the same time, the current battery temperature is adjusted based on the ambient temperature and the battery temperature required for the charging process only when the difference between the driving distance corresponding to the remaining electric quantity and the remaining distance is less than the second preset distance. This avoids unnecessary battery temperature adjustment behavior when the driving distance corresponding to the remaining electric quantity of the vehicle is sufficient and the remaining distance to the destination is relatively short, thereby causing waste of the vehicle electric consumption. In other words, it avoids starting the PTM function too early when the vehicle is far from the charging station, or starting the PTM function too late when the vehicle is close to the charging station, thereby causing waste of the vehicle electric consumption.

[0046] By the above scheme, in response to determining that the vehicle battery is in a power supply state and that charging is needed during the process of the vehicle driving to the destination, the remaining power of the vehicle and the remaining distance to the charging location are acquired. It is judged whether the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range. If the difference between the driving distance corresponding to the remaining power and the remaining distance is within the preset distance range, it indicates that the current remaining power of the vehicle is sufficient for the vehicle to drive to the charging location for charging. At this time, the ambient temperature and the charging process required temperature are determined. The charging process required temperature is the optimal temperature required when the vehicle is fast charging. Based on the ambient temperature and the charging process required battery temperature, the current battery temperature is adjusted so that the adjusted current battery temperature meets or tries to meet the fast charging requirement to shorten the fast charging time.

[0047] In some embodiments, step 102 specifically comprises:

[0048] Step 1021, determining an adjustment type according to the current battery temperature and the charging process required battery temperature, wherein the adjustment type is used to represent that the vehicle battery temperature is adjusted to be increased or decreased.

[0049] In specific implementation, the adjustment type is determined according to the current battery temperature and the charging process required temperature. Specifically, when the current battery temperature is less than the charging process required temperature, it indicates that the vehicle battery temperature needs to be adjusted to be increased, that is, the battery heating function is started to make the vehicle battery temperature reach the charging process required temperature.

[0050] When the current battery temperature is greater than the charging process required temperature, it indicates that the vehicle battery temperature needs to be adjusted to be decreased, that is, the battery cooling function is started to make the vehicle battery temperature reach the charging process required temperature.

[0051] In this embodiment, only the PTM heating function or the PTM cooling function can be started singly in a period or before the vehicle fast charging. That is, after the PTM heating function is activated, the PTM cooling function is no longer activated. Similarly, after the PTM cooling function is activated, the PTM heating function is no longer activated.

[0052] In this embodiment, when the PTM function is activated, the battery temperature is adjusted, and the PTM function has a higher priority than the ordinary battery driving heating / cooling function and other battery thermal management energy saving strategies.

[0053] Step 1022, determining a target battery temperature based on the adjustment type and the ambient temperature.

[0054] In specific implementation, the target battery temperature corresponding to the adjustment type is determined according to the determined adjustment type and the ambient temperature. That is, the target battery temperature corresponding to the adjustment type of adjusting the vehicle battery temperature to be increased is different from the target battery temperature corresponding to the adjustment type of adjusting the vehicle battery temperature to be decreased.

[0055] In step 1023, a first adjustment duration is determined according to the adjustment type and the target battery temperature, and the current battery temperature is adjusted to the target battery temperature based on the first adjustment duration.

[0056] The target battery temperature is less than or equal to the battery temperature required in the charging process. For example, when the ambient temperature is low, the target battery temperature can be less than the battery temperature required in the charging process, and when the ambient temperature is high, the target battery temperature can be equal to the battery temperature required in the charging process.

[0057] In specific implementation, after the adjustment type and the target battery temperature are determined, the first adjustment duration is calculated based on the adjustment type and the target battery temperature. It can be understood that if the adjustment type is to adjust the vehicle battery temperature to increase, the first adjustment duration is the predicted heating duration. If the adjustment type is to adjust the vehicle battery temperature to decrease, the first adjustment duration is the predicted cooling duration.

[0058] In the determined first adjustment duration, the current battery temperature is adjusted to the target battery temperature.

[0059] Through the above scheme, the corresponding target battery temperature is determined according to the determined adjustment type, and the first adjustment duration is determined according to the target battery temperature and the adjustment type. The current battery temperature is adjusted to the target battery temperature based on the first adjustment duration. The battery heating or cooling function is started in advance, so that the battery temperature reaches the target battery temperature when the vehicle reaches the charging station, and the fast charging with the maximum charging rate can be started, thereby shortening the fast charging time.

[0060] In some embodiments, step 1022 specifically includes:

[0061] In step 10221, in response to determining that the adjustment type is to adjust the vehicle battery temperature to increase, a heating target temperature is determined based on the ambient temperature, and the heating target temperature is taken as the target battery temperature. The heating target temperature is less than or equal to the battery temperature required in the charging process.

[0062] Alternatively,

[0063] In step 10222, in response to determining that the adjustment type is to adjust the vehicle battery temperature to decrease, the battery temperature required in the charging process is taken as the target battery temperature.

[0064] In specific implementation, when the adjustment type is to adjust the vehicle battery temperature to increase, the heating target temperature corresponding to the ambient temperature is determined according to the ambient temperature. The heating target temperature is less than or equal to the battery temperature required in the charging process. After the heating target temperature is determined, the heating target temperature is taken as the target battery temperature.

[0065] Specifically, the process of determining the heating target temperature according to the ambient temperature is specifically as follows:

[0066] In response to the ambient temperature being greater than a first preset temperature, the heating target temperature is determined to be a battery temperature required for the charging process. Alternatively,

[0067] In response to the ambient temperature being greater than a second preset temperature and less than or equal to the first preset temperature, the heating target temperature is determined to be a first heating target temperature, wherein the first heating target temperature is less than the battery temperature required for the charging process. Alternatively,

[0068] In response to the ambient temperature being greater than a third preset temperature and less than or equal to the second preset temperature, the heating target temperature is determined to be a second heating target temperature, wherein the second heating target temperature is less than the first heating target temperature. Alternatively,

[0069] In response to the ambient temperature being less than or equal to the third preset temperature, the heating target temperature is determined to be a third heating target temperature, wherein the third heating target temperature is less than the second heating target temperature.

[0070] Exemplarily, the first preset temperature is 10 degrees, the second preset temperature is 2 degrees, the third preset temperature is -15 degrees, the battery temperature required for the charging process is 33 degrees, the first heating target temperature is 25 degrees, the second heating target temperature is 20 degrees, and the third heating target temperature is 15 degrees.

[0071] If the ambient temperature > 10℃, the heating target temperature is T target(1) = 33℃. If 2℃ < ambient temperature ≤ 10℃, the heating target temperature is T target(2) = 25℃. If -15℃ < ambient temperature ≤ 2℃, the heating target temperature is T target(3) = 20℃. If the ambient temperature ≤ -15℃, the heating target temperature is T target(4) = 15℃.

[0072] When the adjustment type is to adjust the vehicle battery temperature to be reduced, the battery temperature required for the charging process is taken as the target battery temperature at this time.

[0073] Exemplarily, when it is required to reduce the battery temperature, the battery temperature required for the charging process is taken as the target battery temperature. For example, when the battery temperature required for the charging process is 33 degrees, the target battery temperature when the battery temperature is reduced is T target(5) = 33℃.

[0074] In this embodiment, the target battery temperature needs to be determined after the vehicle is woken up (e.g., within 2 seconds after the vehicle is woken up), and the target battery temperature is saved and continuously determined at a preset frequency (e.g., once every 5 minutes) without enabling. Meanwhile, if the target battery temperature determined this time is less than the target battery temperature determined last time, the saved target battery temperature is updated.

[0075] In some embodiments, step 1023 specifically includes:

[0076] Step 10231, determining a regulation rate corresponding to the regulation type according to the regulation type.

[0077] Step 10232, determining a battery self-warming rate, and adding the regulation rate and the battery self-warming rate to obtain a first rate value.

[0078] Step 10233, subtracting the current battery temperature from the target battery temperature to obtain a first temperature difference value.

[0079] Step 10234, performing ratio processing on the first temperature difference value and the first rate value to obtain a first regulation time length.

[0080] In specific implementation, the regulation rate corresponding to the regulation type is determined according to the regulation type, that is, when the regulation type is to regulate the vehicle battery temperature to increase, the regulation rate is the battery heating rate. When the regulation type is to regulate the vehicle battery temperature to decrease, the regulation rate is the battery cooling rate.

[0081] The battery core specific heat capacity and the battery core mass are obtained, and the battery self-generated heat power and the heat exchange power between the environment and the battery are determined. The battery self-warming rate is calculated according to the battery core specific heat capacity, the battery core mass, the battery self-generated heat power, and the heat exchange power between the environment and the battery, and the battery self-warming rate is represented by the following formula:

[0082]

[0083] wherein, β trac is the battery self-warming rate, with the unit of ℃ / min. P bat is the battery self-generated heat power, P amb is the heat exchange power between the environment and the battery, with the unit of W. c bat is the battery core specific heat capacity, which is 1047 J / kg·℃ in this embodiment. m bat is the battery core mass, which is 159.896 = kg in this embodiment.

[0084] In this embodiment, the determination process of the battery self-generated heat power is as follows:

[0085] The self-generated heat power of the battery can be determined according to the average current of the battery and the internal resistance of the battery, and the self-generated heat power of the battery is expressed by a formula as follows:

[0086]

[0087] wherein, I avg is the average current of the battery, and the unit is A. R bat is the internal resistance of the battery, and the unit is Ω.

[0088] In this embodiment, the average current of the battery is the average current in the first preset time before the current time point, when the data in the first preset time is missing, the data in the second preset time is used to replace, when the data in the second preset time is missing, the current is used to replace. The second preset time is less than the first preset time. In this embodiment, the first preset time is preferably 5 min, and the second preset time is preferably 1 min.

[0089] In this embodiment, the determination process of the internal resistance of the battery is as follows:

[0090] The average temperature of the battery is obtained, and the first temperature is obtained by averaging the target temperature of the battery and the average temperature of the battery, that is, the first temperature is the average of the target temperature of the battery and the average temperature of the battery.

[0091] The corresponding relationship between the first temperature and the SOC value of the battery and the internal resistance of the single cell is constructed in advance. The internal resistance of the single cell is obtained based on the first temperature and the SOC value of the battery. The number of series connection of the battery cells in the battery pack and the number of parallel connection of the battery cells in the battery pack are obtained, and the internal resistance of the battery is calculated according to the internal resistance of the single cell, the number of series connection of the battery cells in the battery pack and the number of parallel connection of the battery cells in the battery pack, and the internal resistance of the battery is expressed by a formula as follows:

[0092]

[0093] wherein, R cell is the internal resistance of the single cell, n S is the number of series connection of the battery cells in the battery pack, and n P is the number of parallel connection of the battery cells in the battery pack.

[0094] In this embodiment, the determination process of the heat exchange power between the environment and the battery is as follows:

[0095] The corresponding relationship between the difference between the current temperature of the battery and the temperature of the environment and the heat exchange power between the environment and the battery is constructed in advance. The difference between the current temperature of the battery and the temperature of the environment is calculated, and the heat exchange power between the environment and the battery is obtained according to the difference and the average speed of the vehicle.

[0096] The average vehicle speed is calculated as the average vehicle speed within a first preset time period prior to the current time point. If data from the first preset time period is missing, data from the second preset time period is used instead. If data from the second preset time period is missing, the current vehicle speed is used instead. The second preset time period is shorter than the first preset time period. In this embodiment, the first preset time period is preferably 5 minutes, and the second preset time period is preferably 1 minute.

[0097] After determining the battery self-heating rate, the adjustment rate is summed with the battery self-heating rate to obtain a first rate value. The difference between the target battery temperature and the current battery temperature is calculated to obtain a first temperature difference value. The first temperature difference value is then compared with the first rate value to obtain a first adjustment duration.

[0098] Specifically, if the adjustment type is to regulate the increase in vehicle battery temperature, the corresponding adjustment rate is the battery heating rate, and the first adjustment duration is expressed by the formula:

[0099]

[0100] Among them, t PTMheat(1,2,3,4) T is the first adjustment time corresponding to the target battery temperature. target(1,2,3,4) For the target battery temperature, T curmin Given the current battery temperature, β vWMheat For the battery heating rate, β trac β is the battery self-heating rate. vWMheat +β trac T is the first rate value. target(1,2,3,4) -T curmin This is the first temperature difference value.

[0101] A pre-established correspondence between the battery heating rate and the current battery temperature and a second temperature difference, where the second temperature difference is the difference between the air conditioner's maximum target temperature and the ambient temperature, is used to find the corresponding battery heating rate.

[0102] The process for determining the maximum target temperature of the air conditioner is as follows: when there are multiple target temperatures for the air conditioner in the vehicle, such as different air conditioner temperatures on the driver's side, passenger side, and rear seats, the maximum value is selected as the maximum target temperature for the air conditioner.

[0103] Specifically, if the adjustment type is to reduce the vehicle battery temperature, the corresponding adjustment rate is the battery cooling rate, and the first adjustment duration is expressed by the formula:

[0104]

[0105] Among them, t PTMcoolT is a first adjustment duration corresponding to the target battery temperature target(5) T is a target battery temperature curmax β is a current battery temperature vWMcool β is a battery cooling rate trac β is a battery self-heating rate vWMcool +β trac T is a first rate value target(5) -T curmax is a first temperature difference value.

[0106] A corresponding relationship between the battery cooling rate and the current battery temperature and a third temperature difference value is constructed in advance, where the third temperature difference value is a difference between the ambient temperature and the lowest target temperature of the air conditioner. According to the difference between the current battery temperature, the lowest target temperature of the air conditioner and the ambient temperature, the corresponding battery cooling rate is found.

[0107] The determination process of the lowest target temperature of the air conditioner is as follows: when there are multiple air conditioner target temperatures in the vehicle, such as the main driver side air conditioner temperature, the co-driver side air conditioner temperature and the rear row air conditioner temperature, the minimum value is selected as the lowest target temperature of the air conditioner.

[0108] It can be understood that, since the target battery temperature is updated at a preset frequency, the first adjustment duration is also updated and calculated at a preset frequency accordingly.

[0109] In some embodiments, step 1023 specifically comprises:

[0110] Step 1023A, determining a remaining driving duration to a charging location.

[0111] Step 1023B, obtaining an average waiting duration of the charging location, and selecting a maximum value between the average waiting duration and the remaining driving duration as a target duration.

[0112] Step 1023C, in response to the target duration being less than or equal to a first adjustment duration of a first preset multiple, adjusting the current battery temperature to the target battery temperature, where the first preset multiple is greater than 1.

[0113] In specific implementation, the vehicle speed is obtained, and the remaining driving duration to the charging location is determined according to the vehicle speed and the remaining distance to the charging location. The average waiting duration of the charging location is obtained through third-party software or networked data. In this embodiment, if there is an idle charging pile at the charging location or there is no data, the default waiting duration is 0 min.

[0114] The average waiting time length is compared with the remaining driving time length, and the maximum of the two is selected as a target time length. It is judged whether the target time length is less than or equal to a first adjustment time length of a first preset multiple. When the target time length is less than or equal to the first adjustment time length of the first preset multiple, the battery temperature is adjusted.

[0115] Exemplarily, the first preset multiple is 120%, and when the adjustment type is to adjust the vehicle battery temperature to be increased, it is judged whether max(t remain ,t wait )≤k1(120%)×t PTMheat(1,2,3,4) , where t remain is the remaining driving time length, and t wait is the average waiting time length.

[0116] Another example, the first preset multiple is 120%, and when the adjustment type is to adjust the vehicle battery temperature to be decreased, it is judged whether max(t remain ,t wait )≤k1(120%)×t PTMcool , where t remain is the remaining driving time length, and t wait is the average waiting time length.

[0117] Through the above scheme, when it is determined that the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, the PTM function is activated, and the first adjustment time length is calculated. At this time, the PTM function is not executed, that is, the current battery temperature is not adjusted. When the target time length is less than or equal to the first adjustment time length of the first preset multiple, the condition for starting the execution of the PTM function is met, and the current battery temperature is adjusted, which avoids starting to adjust the battery temperature too early, reduces unnecessary repeated adjustment in the future, maintains the temperature operation, reduces the energy consumption of the whole vehicle, and also avoids the situation that the battery temperature cannot reach the target battery temperature when reaching the charging station due to starting to adjust the battery temperature too late.

[0118] In some embodiments, step 1023C specifically comprises:

[0119] Step 1023C1, in response to the target time length being less than or equal to the first adjustment time length of the first preset multiple, calculating a vehicle power consumption value according to the target battery temperature.

[0120] Step 1023C2, in response to the vehicle power consumption value being less than or equal to a preset power consumption threshold, adjusting the current battery temperature to the target battery temperature.

[0121] Alternatively,

[0122] In step 1023C3, in response to the vehicle power consumption value being greater than the preset power consumption threshold, a second adjustment duration is determined according to the target battery temperature and the adjustment type, and the current battery temperature is adjusted to the target battery temperature based on the second adjustment duration.

[0123] The second adjustment duration is less than the first adjustment duration.

[0124] In implementation, when the target duration is less than or equal to the first adjustment duration of the first preset multiple, the battery adjustment efficiency is determined according to the adjustment type. When the adjustment type is to adjust the vehicle battery temperature to increase, the corresponding battery adjustment efficiency is the battery heating efficiency. When the adjustment type is to adjust the vehicle battery temperature to decrease, the corresponding battery adjustment efficiency is the battery cooling efficiency. The vehicle power consumption value is calculated according to the target battery temperature, the current battery temperature, the battery adjustment efficiency, the specific heat capacity of the battery core, and the mass of the battery core.

[0125] Specifically, when the adjustment type is to adjust the vehicle battery temperature to increase, the battery adjustment efficiency is the battery heating efficiency, and the battery power consumption value is represented by the following formula:

[0126]

[0127] In the formula, E vWM(1,2,3,4) is the battery power consumption value corresponding to the target battery temperature, η heat is the battery heating efficiency.

[0128] When the adjustment type is to adjust the vehicle battery temperature to decrease, the battery adjustment efficiency is the battery cooling efficiency, and the battery power consumption value is represented by the following formula:

[0129]

[0130] In the formula, E vWM(5) is the battery power consumption value corresponding to the target battery temperature, η cool is the battery cooling efficiency.

[0131] When the vehicle power consumption value is less than or equal to the preset power consumption threshold, the current battery temperature can be adjusted to the target battery temperature based on the first adjustment duration. During the adjustment, if the first end condition is met, the adjustment is stopped. The first end condition can be that the battery temperature reaches the target battery temperature, or that the target duration is greater than the first adjustment duration of the first preset multiple.

[0132] When the vehicle power consumption value is greater than the preset power consumption threshold, it indicates that although the target battery temperature is the ideal temperature, adjusting to the target battery temperature according to the first adjustment time length will cause a large increase in vehicle power consumption, so that the remaining distance that the vehicle can travel becomes smaller. Therefore, the second adjustment time length is determined according to the target battery temperature and the adjustment type, and the current battery temperature is adjusted to the target battery temperature based on the second adjustment time length.

[0133] In this embodiment, the preset power consumption threshold can be 3.6 x 106 = J.

[0134] Through the above scheme, the additional power consumption required for adjusting to the target battery temperature is calculated to determine whether the preset power consumption threshold is exceeded. If it is greater than the preset power consumption threshold, at this time it is constrained by power consumption, in order to solve the contradiction between the target battery temperature and the remaining distance, the second adjustment time length is determined again according to the target battery temperature and the adjustment type, to ensure that the vehicle can travel to the charging station, and the battery temperature reaches the target battery temperature, and the charging time is shortened.

[0135] In some embodiments, step 1023C3 specifically includes:

[0136] Step 1023C31, in response to the adjustment type being to adjust the vehicle battery temperature to increase, determining a target heating efficiency according to the ambient temperature.

[0137] Step 1023C32, determining a first adjustment time length ratio corresponding to the battery temperature required by the charging process according to the target heating efficiency, the battery temperature required by the charging process, and the current battery temperature.

[0138] Step 1023C33, determining a second adjustment time length ratio corresponding to the first heating target temperature according to the target heating efficiency, the first heating target temperature, and the current battery temperature.

[0139] Step 1023C34, determining a third adjustment time length ratio corresponding to the second heating target temperature according to the target heating efficiency, the second heating target temperature, and the current battery temperature.

[0140] Step 1023C35, determining a fourth adjustment time length ratio corresponding to the third heating target temperature according to the target heating efficiency, the third heating target temperature, and the current battery temperature.

[0141] Step 1023C36, selecting an adjustment time length ratio less than a preset ratio from the first adjustment time length ratio, the second adjustment time length ratio, the third adjustment time length ratio, and the fourth adjustment time length ratio as an initial target adjustment time length ratio.

[0142] Step 1023C37, selecting the maximum value in the initial target adjustment duration ratio as the target adjustment duration ratio, and taking the product value of the target adjustment duration ratio and the first adjustment duration as the second adjustment duration.

[0143] In a specific implementation, a correspondence between the heating efficiency and the ambient temperature is constructed in advance, and when the adjustment type is to adjust the vehicle battery temperature to increase, the target heating efficiency is determined according to the ambient temperature.

[0144] According to the preset power consumption threshold, the specific heat capacity of the battery core, the mass of the battery core, the target heating efficiency, the required battery temperature in the charging process, and the current battery temperature, a first adjustment duration ratio corresponding to the required battery temperature in the charging process is determined, and the first adjustment duration ratio is represented by a formula as follows:

[0145]

[0146] wherein, is the first adjustment duration ratio.

[0147] According to the preset power consumption threshold, the specific heat capacity of the battery core, the mass of the battery core, the target heating efficiency, the first heating target temperature, and the current battery temperature, a second adjustment duration ratio corresponding to the first heating target temperature is determined, and the second adjustment duration ratio is represented by a formula as follows:

[0148]

[0149] wherein, is the second adjustment duration ratio.

[0150] According to the preset power consumption threshold, the specific heat capacity of the battery core, the mass of the battery core, the target heating efficiency, the second heating target temperature, and the current battery temperature, a third adjustment duration ratio corresponding to the second heating target temperature is determined, and the third adjustment duration ratio is represented by a formula as follows:

[0151]

[0152] wherein, is the third adjustment duration ratio.

[0153] According to the preset power consumption threshold, the specific heat capacity of the battery core, the mass of the battery core, the target heating efficiency, the third heating target temperature, and the current battery temperature, a fourth adjustment duration ratio corresponding to the third heating target temperature is determined, and the fourth adjustment duration ratio is represented by a formula as follows:

[0154]

[0155] wherein, the fourth adjustment duration ratio.

[0156] The first adjustment duration ratio, the second adjustment duration ratio, the third adjustment duration ratio and the fourth adjustment duration ratio are compared, and an adjustment duration ratio less than a preset ratio is first screened out as an initial target adjustment duration ratio. In this embodiment, the preset ratio can be 1.

[0157] From the initial target adjustment duration ratio, the maximum value is selected as the target adjustment duration ratio, and the product value of the target adjustment duration ratio and the first adjustment duration is taken as the second adjustment duration.

[0158] For example, the third adjustment duration ratio is the maximum value less than 1, at this time the third adjustment ratio is multiplied by the corresponding first adjustment duration to obtain the second adjustment duration, that is, the second adjustment duration is t' PTMheat(3) ,

[0159] Through the above scheme, when the power consumption constraint is received, it can not reach the heating target temperature (such as 25℃) determined based on the current environment temperature, therefore, it is necessary to calculate which level of heating target temperature (such as 20℃ or 15℃) can be reached, then the second adjustment duration is determined based on the re-determined heating target temperature, and the PTM battery heating function is executed within the second adjustment duration. Specifically, each adjustment duration ratio relative to the first adjustment duration can be determined by back calculation according to the preset power consumption threshold and each level of heating target temperature, and the maximum ratio less than 1 in the plurality of adjustment duration ratios is selected to multiply the first adjustment duration to determine the second adjustment duration when heating the battery temperature. Wherein, the reason for selecting the maximum ratio less than 1 in the plurality of adjustment duration ratios is that if the selected ratio is smaller, the new heating target temperature will be reached in advance by executing the PTM battery heating function, but reaching the heating target temperature too early will also activate the temperature maintenance control process again, which will increase the control steps and also increase the additional temperature maintenance energy consumption. Selecting the maximum ratio less than 1 in the plurality of adjustment duration ratios to calculate with the first adjustment duration can avoid reaching the heating target temperature too early and save energy. The determination process of the second adjustment duration in this embodiment is more simple, shortens the calculation time, and improves the determination efficiency of the second adjustment time.

[0160] In some embodiments, step 1023C3 specifically comprises:

[0161] Step 1023C3A, in response to the adjustment type being to adjust the vehicle battery temperature to be lower, determining a target cooling efficiency according to the environment temperature.

[0162] Step 1023C3B, determining a second adjustment duration according to the target cooling efficiency, the battery temperature required by the charging process, the current battery temperature, and the first adjustment duration.

[0163] In a specific implementation, a correspondence between the cooling efficiency and the ambient temperature is constructed in advance. When the adjustment type is to reduce the temperature of the vehicle battery, the target cooling efficiency is determined according to the ambient temperature.

[0164] The second adjustment duration is determined according to the specific heat capacity of the battery core, the mass of the battery core, the target cooling efficiency, the battery temperature required by the charging process, the current battery temperature, and the first adjustment duration. The second adjustment duration is represented by a formula as follows:

[0165]

[0166] wherein, is the second adjustment duration, η cool is the target cooling efficiency.

[0167] According to the foregoing scheme, the second adjustment duration for cooling the battery temperature is determined by back calculation according to the preset power consumption threshold and the target battery temperature, so that the power consumption value corresponding to the obtained second adjustment duration meets the power consumption requirement. Meanwhile, the target adjustment duration ratio is determined by comparison, and then the second adjustment duration is determined. The determination process of the second adjustment duration is more simple, the calculation time is shortened, and the determination efficiency of the second adjustment duration is improved.

[0168] In this embodiment, the second adjustment duration is obtained by back calculation according to the power consumption threshold and each target temperature, so the second adjustment duration will not be updated with the target battery temperature. Meanwhile, after the second end condition is met, the adjustment is ended, and the PTM function is exited, the PTM function will not be activated and executed again in the current period or before the vehicle fast charging this time, that is, the battery temperature will not be adjusted again.

[0169] In some embodiments, step 1023C3 specifically includes:

[0170] Step 1023C3a, in response to the target duration being less than or equal to a second adjustment duration of a second preset multiple, adjusting the current battery temperature to the target battery temperature, wherein the second preset multiple is less than 1.

[0171] In a specific implementation, when the battery temperature is adjusted based on the first adjustment duration, and the additional power consumption value is greater than the preset power consumption threshold, the second adjustment duration is determined again. When the target duration is less than or equal to a second adjustment duration of a second preset multiple, the current battery temperature is adjusted to the target battery temperature based on the second adjustment duration, wherein the second preset multiple is less than 1.

[0172] In the adjusting process, if a second end condition is met, the adjusting is stopped. The second end condition can be that the battery temperature reaches the target battery temperature, or that the target time length is greater than a second preset multiple of the second adjusting time length.

[0173] For example, the second preset multiple is 90%, and when the adjusting type is to adjust the vehicle battery temperature to be increased, it is determined whether the target time length is greater than 90% of the second adjusting time length. wherein t remain is the remaining driving time length, and t wait is the average waiting time length.

[0174] For another example, the second preset multiple is 90%, and when the adjusting type is to adjust the vehicle battery temperature to be decreased, it is determined whether the target time length is greater than 90% of the second adjusting time length. wherein t remain is the remaining driving time length, and t wait is the average waiting time length.

[0175] Through the above scheme, when it is determined that the power consumption value corresponding to the target battery temperature is greater than the preset power consumption threshold, the second adjusting time is obtained by inversely calculating the power consumption threshold, and at this time, the PTM function is not executed, and the PTM function is only in an activated state. When the target time length is less than or equal to the second preset multiple of the second adjusting time length, the condition for starting the execution of the PTM function is met, and the current battery temperature is adjusted, thereby avoiding that the vehicle power consumption is too fast due to the adjustment of the battery temperature, and the remaining drivable distance of the vehicle is rapidly shortened, and user dissatisfaction is caused.

[0176] In some embodiments, after step 102, the method further includes:

[0177] Step 10A, in response to the current battery temperature being adjusted to the target battery temperature within the first adjusting time length, determining an adjusting cumulative time length.

[0178] Step 10B, in response to determining that the vehicle battery is in a power supply state and needs to be charged during the process of driving the vehicle to the destination, obtaining the remaining power of the vehicle and the remaining distance to the charging location.

[0179] Step 10C, in response to determining that the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, determining a third adjusting time length, wherein the third adjusting time length is less than or equal to a preset multiple of the adjusting cumulative time length, and the preset multiple is less than 1.

[0180] Step 10D, adjusting the current battery temperature based on the ambient temperature and the required battery temperature during the charging process within the third adjusting time length.

[0181] In a specific implementation, when the current battery temperature is adjusted to the target battery temperature within the first adjustment duration, the target requirement is met in advance, and the additional power consumption is less than the power consumption threshold. The adjustment cumulative duration is determined, which refers to the total duration required to adjust the current temperature to the target battery temperature.

[0182] The current battery temperature continues to be monitored. If the vehicle battery is in a powered state again, and the vehicle needs to be charged during the journey to the destination, the remaining power of the vehicle and the remaining distance to the charging location are obtained again. It is determined again whether the difference between the driving distance corresponding to the remaining power and the remaining distance is within the preset distance range.

[0183] If the difference between the driving distance corresponding to the remaining power and the remaining distance is within the preset distance range, that is, the condition for adjusting the battery temperature is met again, the PTM adjustment function is reactivated to maintain the temperature of the battery.

[0184] The third adjustment duration, that is, the temperature maintenance duration, is determined. The third adjustment duration is less than or equal to the adjustment cumulative duration multiplied by a preset multiple, and the preset multiple is less than 1. In this embodiment, the temperature maintenance duration can be no more than 10% of the adjustment cumulative duration.

[0185] The current battery temperature is adjusted based on the ambient temperature and the required battery temperature during the charging process within the third adjustment duration. The specific adjustment manner is the same as that described in the above embodiments, and will not be described here.

[0186] Through the above scheme, by limiting the temperature maintenance duration, the additional power consumption is reduced as much as possible, and the battery temperature reaches the target battery temperature when the vehicle arrives at the charging station, thereby balancing the battery temperature adjustment and the vehicle power consumption.

[0187] In this embodiment, the adjustment of the current battery temperature can be set to an automatic mode or a manual mode. The automatic mode is to automatically start and execute the battery temperature adjustment function (PTM function) when the preset condition is met. The execution process of the automatic mode is described in steps 101 to 102 and the accompanying steps.

[0188] The manual mode is to manually start the battery temperature adjustment function (PTM function) by the user. The specific process includes:

[0189] Step 10a: In response to receiving the battery temperature adjustment instruction, the vehicle battery state and the remaining power of the vehicle are obtained.

[0190] Step 10b, in response to determining that the vehicle battery is in the power supply state, and the remaining power corresponds to a driving distance greater than the preset distance threshold, adjusting the current battery temperature based on the ambient temperature and the battery temperature required by the charging process.

[0191] In a specific implementation, when receiving the battery temperature adjustment instruction sent by the user, it is indicated that the user wants to adjust the battery temperature.

[0192] In this embodiment, the user sends the battery temperature adjustment instruction in at least one of the following ways: through an in-vehicle physical button, through a virtual button, through a voice, through a gesture, etc.

[0193] The position of the in-vehicle physical button includes at least one of the following: steering wheel, door, center armrest, seat, etc. The physical button can be a separately arranged button, or an existing button. If it is an existing button, different functions can be achieved through different operation modes. For example, the existing voice recognition button in the vehicle can send the battery temperature adjustment instruction after being pressed for a preset time.

[0194] The virtual button is a button on the in-vehicle display screen, and the in-vehicle display screen includes a main driver display screen, a co-driver display screen, and a rear display screen.

[0195] For example, when generating the battery temperature adjustment instruction through a voice, the user says "adjust the battery temperature" to indicate that the user wants to adjust the battery temperature. It can be understood that the above-mentioned voice information is only used as an example for illustration. The user can also pre-set the voice information corresponding to the battery temperature adjustment instruction. After saying the voice information corresponding to the battery temperature adjustment instruction, it indicates that the user wants to adjust the battery temperature.

[0196] Another example, when generating the battery temperature adjustment instruction through a gesture, the user opens his palm in front of the in-vehicle camera to indicate that the user wants to adjust the battery temperature. It can be understood that the above-mentioned gesture is only used as an example for illustration. The user can also pre-set the gesture information corresponding to the battery temperature adjustment instruction. After recognizing the gesture information corresponding to the battery temperature adjustment instruction, it indicates that the user wants to adjust the battery temperature.

[0197] When the vehicle battery is in the power supply state, and the remaining power corresponds to a driving distance greater than the preset distance threshold, the current battery temperature is adjusted based on the ambient temperature and the battery temperature required by the charging process. The specific adjustment method is the same as the adjustment method described in the above embodiment, which will not be repeated here.

[0198] In this embodiment, the vehicle is defaulted to start the automatic mode when it is offline (factory), and the vehicle hibernation does not change the state setting of the automatic mode. After the vehicle hibernation and fast charging, the manual mode is automatically closed, and after the vehicle is woken up, the manual mode is defaulted to be inactivated. In the manual mode, when the current battery temperature meets the target demand or the long-time power consumption requirement, the manual mode is automatically exited, the information is fed back to the HUT, and the manual mode switch is closed. When the automatic mode and the manual mode are started at the same time, the manual mode strategy is preferentially executed until the manual mode (manually or automatically) is exited, and then the automatic mode strategy is continued to be monitored, calculated, controlled or temperature maintained (the temperature maintenance time is calculated and controlled based on the cumulative time of the manual mode running).

[0199] Through the above scheme, when the battery temperature adjustment instruction sent by the user is received, the PTM function can also be activated, and subsequent adjustment of the battery temperature of the vehicle can also be realized, so that the adjustment of the battery temperature is more intelligent and meets the needs of different users.

[0200] Based on the same inventive concept, another embodiment of the present disclosure provides a vehicle battery temperature adjustment method, which comprises:

[0201] The mode is set, which comprises an automatic mode and a manual mode. The automatic mode is automatically started and executes the battery temperature adjustment function (PTM function) when the first condition is met. The manual mode is that the user manually starts the battery temperature adjustment function (PTM function), and the battery temperature adjustment function is triggered to execute when the second condition is met.

[0202] In this embodiment, the vehicle is defaulted to start the automatic mode when it is offline (factory), and the vehicle hibernation does not change the state setting of the automatic mode. After the vehicle hibernation and fast charging, the manual mode is automatically closed, and after the vehicle is woken up, the manual mode is defaulted to be inactivated. In the manual mode, when the current battery temperature meets the target demand or the long-time power consumption requirement, the manual mode is automatically exited, the information is fed back to the HUT, and the manual mode switch is closed. When the automatic mode and the manual mode are started at the same time, the manual mode strategy is preferentially executed until the manual mode (manually or automatically) is exited, and then the automatic mode strategy is continued to be monitored, calculated, controlled or temperature maintained (the temperature maintenance time is calculated and controlled based on the cumulative time of the manual mode running).

[0203] In this embodiment, the first condition corresponding to the automatic mode is that the vehicle is in a high-voltage state (i.e., the battery is in a power supply state), the remaining mileage displayed by the instrument and the remaining distance to the charging station are greater than a preset distance, the navigation is effective, the charging station is a direct current charging station, the current battery temperature is less than or greater than the required battery temperature in the charging process, and the vehicle is in a non-fast charging state. Exemplarily, the preset distance is 20 km, and the required battery temperature in the charging process is 33 degrees.

[0204] In this embodiment, the second condition corresponding to the manual mode is that the whole vehicle is in a high pressure state (i.e., the battery is in a power supply state), the remaining mileage displayed by the instrument is greater than a preset distance, the current battery temperature is less than the battery temperature required in the charging process, and the vehicle is in a non-fast charging state. Exemplarily, the preset distance is 30 km, and the battery temperature required in the charging process is 33 degrees.

[0205] In response to determining that the adjustment type is to increase the vehicle battery temperature, a heating target temperature is determined based on the ambient temperature, and the heating target temperature is taken as a target battery temperature; wherein the heating target temperature is less than or equal to the battery temperature required in the charging process.

[0206] Specifically, if the ambient temperature is greater than 10 degrees Celsius, the heating target temperature is T target(1) = 33 degrees Celsius. If the ambient temperature is greater than or equal to 2 degrees Celsius and less than or equal to 10 degrees Celsius, the heating target temperature is T target(2) = 25 degrees Celsius. If the ambient temperature is greater than or equal to -15 degrees Celsius and less than or equal to 2 degrees Celsius, the heating target temperature is T target(3) = 20 degrees Celsius. If the ambient temperature is less than or equal to -15 degrees Celsius, the heating target temperature is T target(4) = 25 degrees Celsius.

[0207] Alternatively,

[0208] In response to determining that the adjustment type is to decrease the vehicle battery temperature, the battery temperature required in the charging process is taken as the target battery temperature.

[0209] Specifically, when the battery temperature needs to be decreased, the battery temperature required in the charging process is taken as the target battery temperature. For example, if the battery temperature required in the charging process is 33 degrees, the target battery temperature when the battery temperature is decreased is T target(5) = 33 degrees Celsius.

[0210] A first adjustment duration is determined according to the adjustment type and the target battery temperature. Specifically, if the adjustment type is to increase the vehicle battery temperature, the corresponding adjustment rate is a battery heating rate, and the first adjustment duration is represented by the following formula:

[0211]

[0212]

[0213] wherein t PTMheat(1,2,3,4) is the first adjustment duration corresponding to the target battery temperature, T target(1,2,3,4) is the target battery temperature, T curmin is the current battery temperature, β vWMheat is the battery heating rate, β trac is a battery self-heating rate. P bat is the battery self-generated heat power, and P ambis the heat exchange power between the environment and the battery, and has a unit of W.c bat is the specific heat capacity of the battery core, and in this embodiment, the specific heat capacity of the battery core is 1047 J / kg·℃.m bat is the mass of the battery core, and in this embodiment, the mass is 159.896 kg.

[0214] In this embodiment, the average current of the battery is the average current in the first preset time before the current time point, and when the data in the first preset time is missing, the data in the second preset time is used to replace it, and when the data in the second preset time is missing, the current is used to replace it. The second preset time is less than the first preset time. In this embodiment, the first preset time is preferably 5 min, and the second preset time is preferably 1 min.

[0215] In this embodiment, the determination process of the battery internal resistance is as follows:

[0216] The average temperature of the battery is obtained, the target temperature of the battery and the average temperature of the battery are averaged to obtain a first temperature, that is, the first temperature is the average of the target temperature of the battery and the average temperature of the battery.

[0217] A corresponding relationship between the first temperature and the actual SOC value of the battery and the single-core internal resistance of the battery is constructed in advance.

[0218] The single-core internal resistance of the battery is obtained based on the first temperature and the SOC value of the battery. The number of series connection of the battery core in the battery pack and the number of parallel connection of the battery core in the battery pack are obtained, and the battery internal resistance is calculated based on the single-core internal resistance of the battery, the number of series connection of the battery core in the battery pack and the number of parallel connection of the battery core in the battery pack. The battery internal resistance is represented by the following formula:

[0219]

[0220] wherein, R cell is the single-core internal resistance of the battery, n S is the number of series connection of the battery core in the battery pack, n P is the number of parallel connection of the battery core in the battery pack.

[0221] In this embodiment, the determination process of the heat exchange power between the environment and the battery is as follows:

[0222] A corresponding relationship between the difference between the current battery temperature and the environment temperature and the heat exchange power between the environment and the battery is constructed in advance.

[0223] The difference between the current battery temperature and the environment temperature is calculated, and the heat exchange power between the environment and the battery is obtained based on the difference and the average speed of the vehicle.

[0224] Wherein, the average vehicle speed is the average vehicle speed in the first preset time before the current time point, the second preset time data is used to replace the data in the first preset time, and the current vehicle speed is used to replace the data in the second preset time when the data in the second preset time is missing. In this embodiment, the first preset time is preferably 5 minutes, and the second preset time is preferably 1 minute.

[0225] A corresponding relationship between the battery heating rate and the current battery temperature and the second temperature difference is constructed in advance, wherein the second temperature difference is the difference between the highest target temperature of the air conditioner and the ambient temperature.

[0226] According to the current battery temperature, the difference between the highest target temperature of the air conditioner and the ambient temperature, the corresponding battery heating rate is found.

[0227] The determination process of the highest target temperature of the air conditioner is: when there are multiple air conditioner target temperatures in the vehicle, such as the air conditioner temperature on the driver side, the air conditioner temperature on the passenger side and the air conditioner temperature in the back row are all different, the maximum value is selected as the highest target temperature of the air conditioner.

[0228] Specifically, if the adjustment type is to reduce the temperature of the vehicle battery, the corresponding adjustment rate is the battery cooling rate, and the first adjustment duration is represented by the formula:

[0229]

[0230] Wherein, t PTMcool is the first adjustment duration corresponding to the target battery temperature, T target(5) is the target battery temperature, T curmax is the current battery temperature, β vWMcool is the battery cooling rate, and β trac is the battery self-heating rate.

[0231] A corresponding relationship between the battery cooling rate and the current battery temperature and the third temperature difference is constructed in advance, wherein the third temperature difference is the difference between the ambient temperature and the lowest target temperature of the air conditioner.

[0232] According to the current battery temperature, the difference between the lowest target temperature of the air conditioner and the ambient temperature, the corresponding battery cooling rate is found.

[0233] The determination process of the lowest target temperature of the air conditioner is: when there are multiple air conditioner target temperatures in the vehicle, such as the air conditioner temperature on the driver side, the air conditioner temperature on the passenger side and the air conditioner temperature in the back row are all different, the minimum value is selected as the lowest target temperature of the air conditioner.

[0234] It can be understood that, since the target battery temperature is updated at a preset frequency, the corresponding first adjustment duration is also updated and calculated at a preset frequency.

[0235] Specifically, when the PTM function is executed, the first adjustment duration is updated in accordance with the target battery temperature update frequency.

[0236] When the adjustment type is to adjust the vehicle battery temperature to be increased, and the maximum of the average waiting duration and the remaining driving duration is less than or equal to the first adjustment duration of a first preset multiple, a vehicle power consumption value is calculated according to the target battery temperature, and it is determined whether the vehicle power consumption value satisfies a power consumption constraint.

[0237] Specifically, when max(t remain ,t wait )≤k1(120%)×t PTMheat(1,2,3,4) , a vehicle power consumption value is calculated, and it is determined whether the vehicle power consumption value satisfies a power consumption constraint. If it is not constrained, a PTM heating function is activated based on the target battery temperature, and the target battery temperature is updated at a 5-minute update frequency. It is determined whether the heating function continues or is paused based on max(t remain ,t wait )≤k1(120%)×t PTMheat(1,2,3,4) , and the pause condition is [max(t remain ,t wait )>k1(120%)×t PTMheat(1,2,3,4) ].

[0238] When the power consumption constraint condition is limited, it is calculated that Then, based on The PTM heating function is activated, and it is determined every 5 minutes whether the heating continues or is paused Until the cumulative heating duration is greater than or equal to k2× Or T curmin ≥T target(1,2,3,4) ,

[0239] The PTM heating function is exited, and the PTM is not activated again in the current wake-up period or before fast charging.

[0240] When the adjustment type is to adjust the vehicle battery temperature to be decreased, and the maximum of the average waiting duration and the remaining driving duration is less than or equal to the first adjustment duration of a first preset multiple, a vehicle power consumption value is calculated according to the target battery temperature, and it is determined whether the vehicle power consumption value satisfies a power consumption constraint.

[0241] Specifically, when max(t remain ,t wait )≤k3(120%)×t PTMcool , a vehicle power consumption value is calculated, and it is determined whether the vehicle power consumption value satisfies a power consumption constraint. If it is not constrained, a PTM cooling function is activated, and the PTM cooling function is updated at a 5-minute update frequency based on max(t remaint wait )≤k3(120%)×t PTMcool determine whether to continue or suspend the heating function, and the suspension condition is [max(t remain ,t wait )>k3(120%)×t PTMcool ];

[0242] When the power consumption constraint condition is limited, the second adjustment duration is calculated as Then, based on the target battery temperature and the adjustment type, the second adjustment duration is calculated as Activate the PTM cooling function, and determine every 5 minutes whether to continue or suspend the cooling Until the cumulative cooling time

[0243] Exit the PTM cooling function, and the PTM is no longer activated in the current wake-up period or before fast charging.

[0244] In this embodiment, the power consumption constraint is specifically whether the vehicle power consumption value is higher than a preset power consumption threshold, and the power consumption threshold is 10 kWh (3.6×106 = J). The vehicle power consumption value is represented by the formula:

[0245] When the adjustment type is to adjust the vehicle battery temperature to increase, the battery adjustment efficiency is the battery heating efficiency, and the battery power consumption value is represented by the formula:

[0246]

[0247] Wherein, E vWM(1,2,3,4) is the battery power consumption value corresponding to the target battery temperature, and η heat is the battery heating efficiency.

[0248] When the adjustment type is to adjust the vehicle battery temperature to decrease, the battery adjustment efficiency is the battery cooling efficiency, and the battery power consumption value is represented by the formula:

[0249]

[0250] Wherein, E vWM(5) is the battery power consumption value corresponding to the target battery temperature, and η cool is the battery cooling efficiency.

[0251] The battery heating efficiency and the battery cooling efficiency are related to the ambient temperature, and a corresponding relationship between the battery heating efficiency and the battery cooling efficiency and the ambient temperature is established in advance.

[0252] When the power consumption constraint condition is limited, the second adjustment duration needs to be determined according to the target battery temperature and the adjustment type, and the second adjustment duration is the above and The specific second adjustment duration can be expressed by a formula as follows:

[0253]

[0254]

[0255] Take The maximum value less than 1, which corresponds to That is, the heatable duration that meets the power consumption requirement, The coolable duration that meets the power consumption requirement.

[0256] When the battery temperature meets the target requirement in advance (for the first time) and the PTM function is not limited by the power consumption constraint condition, the PTM cumulative duration is recorded and the battery temperature is continuously monitored. When the battery temperature meets the PTM heating and cooling activation condition again, the battery can be activated for temperature maintenance again, but the temperature maintenance duration (based on the effective operation duration of the battery heating / cooling activated again) cannot exceed 10% of the cumulative duration of the PTM activated when the target temperature is met for the first time.

[0257] In this embodiment, after the manual mode is started and the enabling condition is met, the battery temperature control requirement is determined based on the current ambient temperature and the maximum / minimum battery temperature immediately, until the battery temperature meets the target requirement or exceeds the power consumption duration requirement or triggers the termination condition, the PTM manual mode operation ends, and information is fed back to the HUT, and the manual mode switch is turned off.

[0258] In the manual mode, before the PTM function operation ends (including the two states of before starting and during operation), the PTM target temperature adjustment mode remains consistent with the automatic mode, but only once the battery thermal management function (heating or cooling) can be activated within a single manual mode operation cycle.

[0259] In this embodiment, in the manual mode, when the ambient temperature is less than a preset temperature, the PTM function no longer determines the cooling requirement, and the preset temperature is preferably 20 degrees.

[0260] In this embodiment, in the manual mode, before the PTM heating and cooling function takes effect, if the battery temperature does not meet the heating and cooling conditions at the same time, the manual mode switch remains in the on state until the heating function or the cooling function activation condition is met and the operation ends.

[0261] It should be noted that the method of the embodiment of the present disclosure can be executed by a single device, such as a computer or a server, etc. The method of the embodiment can also be applied to a distributed scenario, and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiment of the present disclosure, and the multiple devices will interact with each other to complete the method.

[0262] It is to be understood that the foregoing description is directed to some embodiments of the disclosure. Various changes can be made to the application claimed without departing from the scope of the disclosure. In some cases, the acts or steps recited in the claims can be performed in a different order and still achieve desirable results. In addition, processes depicted in the accompanying figures do not necessarily require the particular order shown or sequential order to achieve desirable results. In certain implementations, multitasking and parallel processing can be advantageous.

[0263] Based on the same inventive concept, the disclosure also provides a vehicle battery temperature adjusting device corresponding to any of the above-mentioned embodiment methods.

[0264] Reference Figure 2 , Figure 2 The vehicle battery temperature adjusting device of the embodiment comprises:

[0265] The data acquisition module 201 is configured to, in response to determining that the vehicle battery is in a power supply state and charging is needed during the process of the vehicle traveling to the destination, acquire the remaining power of the vehicle and the remaining distance to the charging location.

[0266] The adjusting module 202 is configured to, in response to determining that the difference between the travel distance corresponding to the remaining power and the remaining distance is within a preset distance range, adjust the current battery temperature based on the ambient temperature and the battery temperature required during the charging process.

[0267] In some embodiments, the adjusting module 202 specifically comprises:

[0268] The type determination unit is configured to determine an adjusting type according to the current battery temperature and the battery temperature required during the charging process, wherein the adjusting type is used to indicate whether to adjust the vehicle battery temperature to increase or decrease.

[0269] The target battery temperature determination unit is configured to determine a target battery temperature based on the adjusting type and the ambient temperature.

[0270] The adjusting unit is configured to determine a first adjusting duration according to the adjusting type and the target battery temperature, and adjust the current battery temperature to the target battery temperature based on the first adjusting duration.

[0271] In some embodiments, the target battery temperature determination unit specifically comprises:

[0272] The heating target temperature determination sub-unit is configured to, in response to determining that the adjusting type is to adjust the vehicle battery temperature to increase, determine a heating target temperature based on the ambient temperature, and take the heating target temperature as the target battery temperature; wherein the heating target temperature is less than or equal to the battery temperature required during the charging process. Alternatively,

[0273] The cooling target temperature determining sub-unit is configured to, in response to determining that the adjustment type is to reduce the temperature of the vehicle battery, determine the battery temperature required by the charging process as the target battery temperature.

[0274] In some embodiments, the heating target temperature determining sub-unit is specifically configured to:

[0275] determine the heating target temperature as the battery temperature required by the charging process in response to the ambient temperature being greater than a first preset temperature; or,

[0276] determine the heating target temperature as a first heating target temperature in response to the ambient temperature being greater than a second preset temperature and less than or equal to the first preset temperature, wherein the first heating target temperature is less than the battery temperature required by the charging process; or,

[0277] determine the heating target temperature as a second heating target temperature in response to the ambient temperature being greater than a third preset temperature and less than or equal to the second preset temperature, wherein the second heating target temperature is less than the first heating target temperature; or,

[0278] determine the heating target temperature as a third heating target temperature in response to the ambient temperature being less than or equal to the third preset temperature, wherein the third heating target temperature is less than the second heating target temperature.

[0279] In some embodiments, the adjustment unit is specifically configured to:

[0280] determine an adjustment rate corresponding to the adjustment type according to the adjustment type;

[0281] determine a battery self-warming rate, add the adjustment rate and the battery self-warming rate to obtain a first rate value;

[0282] obtain a first temperature difference value by subtracting the current battery temperature from the target battery temperature;

[0283] obtain a first adjustment duration by dividing the first temperature difference value by the first rate value.

[0284] In some embodiments, the adjustment unit specifically comprises:

[0285] a remaining driving duration determining sub-unit configured to determine a remaining driving duration to a charging location;

[0286] a target duration determining sub-unit configured to obtain an average waiting duration at the charging location, and select a maximum value between the average waiting duration and the remaining driving duration as a target duration;

[0287] an adjusting subunit configured to adjust the current battery temperature to the target battery temperature in response to the target duration being less than or equal to a first preset duration of adjustment, wherein the first preset duration is greater than 1.

[0288] In some embodiments, the adjusting subunit is specifically configured to:

[0289] calculate a vehicle power consumption value according to the target battery temperature in response to the target duration being less than or equal to a first preset duration of adjustment;

[0290] adjust the current battery temperature to the target battery temperature in response to the vehicle power consumption value being less than or equal to a preset power consumption threshold; or,

[0291] determine a second duration of adjustment according to the target battery temperature and the adjustment type in response to the vehicle power consumption value being greater than a preset power consumption threshold, and adjust the current battery temperature to the target battery temperature based on the second duration of adjustment;

[0292] wherein the second duration of adjustment is less than the first duration of adjustment.

[0293] In some embodiments, the determination of the second duration of adjustment according to the target battery temperature and the adjustment type comprises:

[0294] determining a target heating efficiency according to the ambient temperature in response to the adjustment type being to adjust the vehicle battery temperature to be higher;

[0295] determining a first duration of adjustment ratio corresponding to the charging process required battery temperature according to the target heating efficiency, the charging process required battery temperature, and the current battery temperature;

[0296] determining a second duration of adjustment ratio corresponding to the first heating target temperature according to the target heating efficiency, the first heating target temperature, and the current battery temperature;

[0297] determining a third duration of adjustment ratio corresponding to the second heating target temperature according to the target heating efficiency, the second heating target temperature, and the current battery temperature;

[0298] determining a fourth duration of adjustment ratio corresponding to the third heating target temperature according to the target heating efficiency, the third heating target temperature, and the current battery temperature;

[0299] selecting a duration of adjustment ratio less than a preset ratio from the first, second, third, and fourth durations of adjustment ratios as an initial target duration of adjustment ratio;

[0300] selecting a maximum value in the initial target adjustment duration ratio as a target adjustment duration ratio, and taking a product value of the target adjustment duration ratio and the first adjustment duration as a second adjustment duration.

[0301] In some embodiments, the determining the second adjustment duration according to the target battery temperature and the adjustment type comprises:

[0302] In response to the adjustment type being adjustment of the vehicle battery temperature to be reduced, determining a target cooling efficiency according to the ambient temperature;

[0303] determining a second adjustment duration according to the target cooling efficiency, the battery temperature required for the charging process, the current battery temperature, and the first adjustment duration.

[0304] In some embodiments, the adjusting the current battery temperature to the target battery temperature based on the second adjustment duration comprises:

[0305] In response to the target duration being less than or equal to a second adjustment duration of a second preset multiple, adjusting the current battery temperature to the target battery temperature, wherein the second preset multiple is less than 1.

[0306] In some embodiments, the apparatus further comprises an instruction receiving module configured to:

[0307] In response to receiving a battery temperature adjustment instruction, obtaining a vehicle battery state and a remaining power of the vehicle;

[0308] In response to determining that the vehicle battery is in a power supply state and the remaining power corresponds to a driving distance greater than a preset distance threshold, adjusting the current battery temperature based on the ambient temperature and the battery temperature required for the charging process.

[0309] In some embodiments, the apparatus further comprises a temperature maintaining module configured to:

[0310] In response to the current battery temperature being adjusted to the target battery temperature within the first adjustment duration, determining an adjustment cumulative duration;

[0311] In response to determining that the vehicle battery is in a power supply state and the vehicle needs to be charged during the process of driving to a destination, obtaining a remaining power of the vehicle and a remaining distance to a charging location;

[0312] In response to determining that a difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, determining a third adjustment duration, wherein the third adjustment duration is less than or equal to a preset multiple of the adjustment cumulative duration, and the preset multiple is less than 1.

[0313] Adjust the current battery temperature based on the ambient temperature and the required battery temperature during the charging process within the third adjustment duration.

[0314] For the convenience of description, the above apparatus is described in various modules in terms of functions. Of course, the functions of the modules can be implemented in one or more software and / or hardware when implementing the present disclosure.

[0315] The apparatus of the above embodiments is used to implement the corresponding vehicle battery temperature adjustment method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here again.

[0316] Based on the same inventive concept, the present disclosure also provides an electronic device corresponding to the method of any of the above embodiments, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the vehicle battery temperature adjustment method of any of the above embodiments when executing the program.

[0317] Figure 3 A more specific hardware structure schematic diagram of an electronic device provided by the present embodiment is shown, which can include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040 and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030 and the communication interface 1040 are connected to each other through the bus 1050 for communication within the device.

[0318] The processor 1010 can be implemented in the form of a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., for executing related programs to implement the technical solutions provided by the present embodiment.

[0319] The memory 1020 can be implemented in the form of a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1020 can store an operating system and other application programs, and when the technical solutions provided by the present embodiment are implemented by software or firmware, the related program codes are saved in the memory 1020 and executed by the processor 1010.

[0320] The input / output interface 1030 is configured to connect an input / output module to realize information input and output. The input / output module can be configured in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input device can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device can include a display, a speaker, a vibrator, an indicator light, etc.

[0321] The communication interface 1040 is configured to connect a communication module (not shown in the figure) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired manner (such as a USB, a network cable, etc.) or a wireless manner (such as a mobile network, WIFI, Bluetooth, etc.).

[0322] The bus 1050 includes a channel to transmit information between various components (such as the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040) of the device.

[0323] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in the specific implementation process, the device can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above device can also only include components necessary for implementing the embodiments of the present disclosure, and does not necessarily include all components shown in the figure.

[0324] The electronic device of the above embodiments is used to implement the vehicle battery temperature adjustment method of any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here.

[0325] Based on the same inventive concept, the disclosure also provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the vehicle battery temperature adjustment method of any of the above embodiments.

[0326] The computer readable medium of the embodiments includes permanent and non-permanent, removable and non-removable media, which can realize information storage by any method or technology. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0327] The storage medium of the above-mentioned embodiments stores computer instructions for causing the computer to execute the vehicle battery temperature regulation method according to any one of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0328] Based on the same inventive concept, the present application also provides a vehicle comprising the vehicle battery temperature regulation device according to any one of the above-mentioned embodiments, the electronic device according to any one of the above-mentioned embodiments, and the computer readable storage medium according to any one of the above-mentioned embodiments. The vehicle device implements the vehicle battery temperature regulation method according to any one of the above-mentioned embodiments.

[0329] The vehicle of the above-mentioned embodiments is used to implement the vehicle battery temperature regulation method according to any one of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0330] It can be understood that before using the technical solutions of the various embodiments in the present disclosure, the user will be informed of the type, use range, use scenario, etc. of the personal information involved by appropriate means, and the authorization of the user will be obtained.

[0331] For example, in response to receiving the user's active request, the user is sent prompt information to explicitly prompt the user that the operation requested to be performed will require the acquisition and use of the user's personal information. Thus, the user can voluntarily choose whether to provide personal information to the software or hardware such as electronic devices, application programs, servers or storage media that perform the technical solutions of the present disclosure according to the prompt information.

[0332] As an optional but non-limiting implementation manner, in response to accepting the active request of the user, the manner of sending the prompt information to the user may be, for example, a pop-up window manner, in which the prompt information may be presented in a text manner. In addition, the pop-up window may also carry a selection control for the user to select "agree" or "disagree" to provide the personal information to the electronic device.

[0333] It can be understood that the above notification and user authorization obtaining process is only illustrative, and does not limit the implementation manners of the present disclosure, and other manners meeting the relevant laws and regulations can also be applied to the implementation manners of the present disclosure.

[0334] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope (including claims) of the present disclosure is limited to these examples; under the idea of the present disclosure, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of brevity.

[0335] In addition, in order to simplify the description and discussion, and so as not to make the embodiments of the present disclosure difficult to understand, the well-known power / ground connections of integrated circuit (IC) chips and other components can or can not be shown in the provided drawings. In addition, the devices can be shown in the form of block diagrams in order to avoid making the embodiments of the present disclosure difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented to implement the embodiments of the present disclosure (i.e., these details should be fully within the understanding of those skilled in the art). Where specific details (e.g., circuitry) are set forth in order to describe an illustrative embodiment of the present disclosure, it will be apparent to those skilled in the art that the embodiments of the present disclosure can be practiced without these specific details or with variations on these specific details. Therefore, these descriptions should be considered as illustrative rather than limiting.

[0336] Although the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0337] The embodiments of the present disclosure are intended to cover all such alternatives, modifications and variations as falling within the broad scope of the appended claims. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A vehicle battery temperature adjustment method characterized by, The method comprises the following steps: in response to determining that the vehicle battery is in a power supply state and the vehicle needs to be charged during driving to a destination, obtaining the remaining power of the vehicle and the remaining distance to the charging location; in response to determining that the difference between the driving distance corresponding to the remaining power and the remaining distance is within a preset distance range, adjusting the current battery temperature based on the ambient temperature and the battery temperature required during the charging process; the step of adjusting the current battery temperature based on the ambient temperature and the battery temperature required during the charging process comprises the following steps: determining an adjustment type according to the current battery temperature and the battery temperature required during the charging process, wherein the adjustment type is used to indicate whether to increase or decrease the temperature of the vehicle battery; determining a target battery temperature based on the adjustment type and the ambient temperature; determining a first adjustment time length according to the adjustment type and the target battery temperature, and adjusting the current battery temperature to the target battery temperature based on the first adjustment time length; the step of adjusting the current battery temperature to the target battery temperature based on the first adjustment time length comprises the following steps: determining the remaining driving time length to the charging location; obtaining the average waiting time length of the charging location, and selecting the maximum value of the average waiting time length and the remaining driving time length as a target time length; in response to the target time length being less than or equal to a first adjustment time length of a first preset multiple, adjusting the current battery temperature to the target battery temperature, wherein the first preset multiple is greater than 1.

2. The method of claim 1, wherein, the step of determining a target battery temperature based on the adjustment type and the ambient temperature comprises the following steps: in response to determining that the adjustment type is to increase the temperature of the vehicle battery, determining a heating target temperature based on the ambient temperature, and taking the heating target temperature as the target battery temperature; wherein the heating target temperature is less than or equal to the battery temperature required during the charging process; or in response to determining that the adjustment type is to decrease the temperature of the vehicle battery, taking the battery temperature required during the charging process as the target battery temperature.

3. The method of claim 2, wherein, the step of determining a heating target temperature based on the ambient temperature comprises the following steps: in response to the ambient temperature being greater than a first preset temperature, determining the heating target temperature to be the battery temperature required during the charging process; or in response to the ambient temperature being greater than a second preset temperature and less than or equal to the first preset temperature, determining the heating target temperature to be a first heating target temperature, wherein the first heating target temperature is less than the battery temperature required during the charging process; or in response to the ambient temperature being greater than a third preset temperature and less than or equal to the second preset temperature, determining the heating target temperature to be a second heating target temperature, wherein the second heating target temperature is less than the first heating target temperature; or in response to the ambient temperature being less than or equal to the third preset temperature, determining the heating target temperature to be a third heating target temperature, wherein the third heating target temperature is less than the second heating target temperature.

4. The method of claim 1, wherein, the step of determining a first adjustment time length according to the adjustment type and the target battery temperature comprises the following steps: determining an adjustment rate corresponding to the adjustment type according to the adjustment type. determining a self-warming rate of the battery, and adding the adjustment rate and the self-warming rate to obtain a first rate value; determining a first temperature difference value by subtracting the current battery temperature from the target battery temperature; determining a first adjustment duration by dividing the first temperature difference value by the first rate value.

5. The method of claim 3, wherein, In response to the target duration being less than or equal to a first preset multiple of the first adjustment duration, the current battery temperature is adjusted to the target battery temperature, including: In response to the target duration being less than or equal to a first preset multiple of the first adjustment duration, a vehicle power consumption value is calculated according to the target battery temperature; In response to the vehicle power consumption value being less than or equal to a preset power consumption threshold, the current battery temperature is adjusted to the target battery temperature; or, In response to the vehicle power consumption value being greater than a preset power consumption threshold, a second adjustment duration is determined according to the target battery temperature and the adjustment type, and the current battery temperature is adjusted to the target battery temperature based on the second adjustment duration; wherein the second adjustment duration is less than the first adjustment duration.

6. The method of claim 5, wherein, The second adjustment duration is determined according to the target battery temperature and the adjustment type, including: In response to the adjustment type being to adjust the vehicle battery temperature to increase, a target heating efficiency is determined according to the ambient temperature; A first adjustment duration ratio corresponding to the charging process required battery temperature is determined according to the target heating efficiency, the charging process required battery temperature, and the current battery temperature; A second adjustment duration ratio corresponding to the first heating target temperature is determined according to the target heating efficiency, the first heating target temperature, and the current battery temperature; A third adjustment duration ratio corresponding to the second heating target temperature is determined according to the target heating efficiency, the second heating target temperature, and the current battery temperature; A fourth adjustment duration ratio corresponding to the third heating target temperature is determined according to the target heating efficiency, the third heating target temperature, and the current battery temperature; An initial target adjustment duration ratio is selected from the first adjustment duration ratio, the second adjustment duration ratio, the third adjustment duration ratio, and the fourth adjustment duration ratio, which is less than a preset ratio; The maximum value of the initial target adjustment duration ratio is selected as a target adjustment duration ratio, and a product value of the target adjustment duration ratio and the first adjustment duration is taken as a second adjustment duration.

7. The method of claim 5, wherein, The second adjustment duration is determined according to the target battery temperature and the adjustment type, including: In response to the adjustment type being to adjust the vehicle battery temperature to decrease, a target cooling efficiency is determined according to the ambient temperature; A second adjustment duration is determined according to the target cooling efficiency, the charging process required battery temperature, the current battery temperature, and the first adjustment duration.

8. The method of claim 5, wherein, The current battery temperature is adjusted to the target battery temperature based on the second adjustment duration, including: In response to the target duration being less than or equal to a second preset multiple of the second adjustment duration, the current battery temperature is adjusted to the target battery temperature, wherein the second preset multiple is less than 1.

9. The method of claim 1, wherein, Further comprising: In response to receiving the battery temperature adjustment instruction, obtaining a state of the vehicle battery and a remaining power of the vehicle; In response to determining that the vehicle battery is in the power supply state and the remaining power corresponds to a driving distance greater than a preset distance threshold, adjusting the current battery temperature based on an ambient temperature and a battery temperature required in a charging process.

10. The method of claim 1, wherein, After adjusting the current battery temperature, the method further comprises: In response to determining that the current battery temperature is adjusted to the target battery temperature within a first adjustment duration, determining an accumulated adjustment duration; In response to determining that the vehicle battery is in the power supply state and the vehicle needs to be charged during driving to a destination, obtaining a remaining power of the vehicle and a remaining distance to a charging location; In response to determining that a difference between the remaining power corresponding to the driving distance and the remaining distance is within a preset distance range, determining a third adjustment duration, wherein the third adjustment duration is less than or equal to a preset multiple of the accumulated adjustment duration, and the preset multiple is less than 1; Adjusting the current battery temperature based on the ambient temperature and the battery temperature required in the charging process within the third adjustment duration.

11. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 10 when executing the program.

12. A vehicle characterized by comprising: An electronic device as claimed in claim 11.

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