A method, device and electronic equipment for determining thermal management of power batteries

Abstract

The present application discloses a method, device, and electronic device for determining thermal management of a power battery. The method includes: determining a target destination of a target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel threshold; determining the remaining distance of the target vehicle from the target destination based on the target vehicle's speed, the target vehicle's historical travel time to the target destination, and the target vehicle's current travel time; determining a target temperature change value for the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery per unit travel distance; and determining whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in its current state, and a preset limit temperature threshold. The present application improves the overall energy consumption of the target vehicle by shortening the cooling time of the compressor for the target power battery.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a method, device, and electronic device for determining thermal management of a power battery. Background Art

[0002] At present, with the development of society and the advancement of science and technology, more and more users are beginning to use new energy vehicles for travel. As the main power of new energy vehicles, power batteries play an important role in the driving process of the vehicle. Therefore, the thermal management of power batteries is the key to ensuring safe and stable driving of the vehicle.

[0003] However, traditional battery thermal management methods are usually determined based on the real-time monitoring of the battery current. Specifically, when the current temperature caused by the current in the battery exceeds the battery temperature and the current temperature is less than the threshold temperature, the battery cooling system is activated to cool the battery. However, this battery thermal management method based on current prediction of battery temperature cannot reduce the overall vehicle energy consumption of the battery, resulting in waste of resources. Therefore, the overall vehicle energy consumption of the battery is an urgent problem to be solved in this field. Summary of the Invention

[0004] The embodiments of the present application provide a method, device, and electronic device for determining thermal management of a power battery. The embodiments provided by the present application solve the technical problem of high energy consumption in thermal management of batteries in the prior art. The embodiments provided by the present application improve the overall energy consumption of the target vehicle by shortening the cooling time of the compressor for the target power battery.

[0005] In a first aspect of the embodiments of the present application, the embodiments of the present application provide a method for determining thermal management of a power battery, the method for determining thermal management of a power battery comprising:

[0006] When the target vehicle does not have vehicle navigation turned on, determining the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a threshold of the number of times a preset route is traveled;

[0007] Determining a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to the target destination, and the current driving time of the target vehicle;

[0008] Determining a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and a temperature change value of the target power battery per unit driving distance, wherein the temperature change value is used to represent an average value of the temperature change per unit driving distance;

[0009] Based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold, it is determined whether the target power battery needs to be cooled to achieve thermal management of the target power battery.

[0010] In a feasible implementation manner, when the target vehicle does not enable vehicle navigation, determining the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a threshold of the number of times a preset route has been traveled includes:

[0011] When the target vehicle does not turn on vehicle navigation, determine whether the historical vehicle usage time of the target vehicle is within the preset vehicle usage time period; if the historical vehicle usage time of the target vehicle is within the preset vehicle usage time period, determine the target destination of the target vehicle based on the number of times the target vehicle has traveled to the historical destination and the preset route travel number threshold.

[0012] In a feasible implementation manner, if the historical vehicle usage time of the target vehicle is within a preset vehicle usage time period, determining the target destination of the target vehicle based on the number of times the target vehicle has traveled to the historical destination and a preset route travel number threshold includes:

[0013] If the target vehicle's historical usage time is within the preset usage time period, then determine whether the target vehicle's actual number of trips to the historical destination is greater than or equal to the preset route trip number threshold;

[0014] If the actual number of travels is greater than or equal to a preset route travel number threshold, the historical destination is determined as the target destination of the target vehicle.

[0015] In a feasible implementation manner, determining the remaining distance of the target vehicle from the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to the target destination, and the current driving time of the target vehicle includes:

[0016] Determining a total distance traveled by the target vehicle to the target destination based on the target vehicle's speed and the target vehicle's historical travel time to the target destination;

[0017] Determining a travel distance of the target vehicle in a current state based on the speed of the target vehicle and the current travel time of the target vehicle;

[0018] A remaining distance of the target vehicle from the target destination is determined based on the total distance and the travel distance.

[0019] In a feasible implementation manner, determining the target temperature change value of the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery at the unit driving distance includes:

[0020] The target temperature change value of the target vehicle at the remaining distance is determined based on the remaining distance, the temperature change value of the target power battery per unit driving distance, the external ambient temperature, the driving mode of the target vehicle and the driving habits of the driver.

[0021] In a feasible embodiment, the determining whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold includes: determining a target temperature of the target power battery when it arrives at the target destination based on the target temperature change value and the temperature value of the target power battery in the current state;

[0022] If the target temperature is greater than a preset limit temperature threshold, determining that the target power battery needs to be cooled;

[0023] If the target temperature is less than or equal to a preset limit temperature threshold, it is determined that the target power battery does not need to be cooled.

[0024] In a feasible embodiment, when the target vehicle does not have vehicle navigation enabled, after determining the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a threshold of the number of times a preset route is traveled, the method for determining power battery thermal management further includes:

[0025] When the target vehicle starts vehicle navigation, the remaining distance between the target vehicle and the target destination is determined according to the navigation in the current state.

[0026] In a second aspect of the embodiments of the present application, an apparatus for determining thermal management of a power battery is provided. The apparatus for determining thermal management of a power battery includes:

[0027] A first determination module is configured to determine a target destination of the target vehicle based on a historical vehicle usage time, a historical destination, and a threshold value of a preset number of travel times of the target vehicle when the vehicle navigation is not enabled for the target vehicle;

[0028] a second determining module, configured to determine a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to reach the target destination, and the current driving time of the target vehicle;

[0029] a third determining module, configured to determine a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and a temperature change value of the target power battery at the unit driving distance, wherein the temperature change value is used to represent an average value of the temperature change at the unit driving distance;

[0030] The fourth determination module is configured to determine whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold, so as to achieve thermal management of the target power battery.

[0031] According to a third aspect of the embodiments of the present application, an electronic device is provided, comprising: a processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory through the bus, and the machine-readable instructions are executed by the processor to perform the steps of the method for determining thermal management of a power battery as described above.

[0032] In a fourth aspect of the embodiments of the present application, the embodiments of the present application provide a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for determining thermal management of a power battery as described above are executed.

[0033] The method, device and electronic device for determining thermal management of a power battery provided in the embodiments of the present application, compared with the prior art, determine the target destination of the target vehicle based on the historical vehicle usage time, historical destinations and a preset route travel number threshold of the target vehicle when the vehicle navigation is not turned on for the target vehicle, and then determine the remaining distance of the target vehicle from the target destination based on the target vehicle speed, the historical driving time of the target vehicle to reach the target destination and the current driving time of the target vehicle. Then, based on the remaining distance and the temperature change value of the target power battery per unit driving distance, determine the target temperature change value of the target vehicle at the remaining distance. Finally, based on the target temperature change value, the temperature value of the target power battery in the current state and the preset limit temperature threshold, determine whether the target power battery needs to be cooled to achieve thermal management of the target power battery. The embodiments provided in the present application improve the overall energy consumption of the target vehicle by shortening the cooling time of the compressor for the target power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 One of the flow charts of a method for determining thermal management of a power battery provided in an embodiment of the present application is shown;

[0035] Figure 2A second flowchart of a method for determining thermal management of a power battery provided in an embodiment of the present application is shown;

[0036] Figure 3 A structural block diagram of a device for determining thermal management of a power battery provided in an embodiment of the present application is shown;

[0037] Figure 4 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown.

[0038] Figure 3 and Figure 4 The corresponding relationship between the reference numerals and the names of the drawings is as follows:

[0039] 300 Determination device for power battery thermal management; 310 First determination module; 320 Second determination module; 330 Third determination module; 340 Fourth determination module; 350 Fifth determination module; 400 Electronic device; 410 Processor; 420 Memory; 430 Bus. DETAILED DESCRIPTION

[0040] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0041] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0042] First, the applicable application scenarios of this application are introduced. The embodiments provided in this application are applicable to the field of power battery technology.

[0043] At present, with the development of society and the advancement of science and technology, more and more users are beginning to use new energy vehicles for travel. As the main power of new energy vehicles, power batteries play an important role in the driving process of the vehicle. Therefore, the thermal management of power batteries is the key to ensuring safe and stable driving of the vehicle.

[0044] However, traditional battery thermal management methods are usually determined based on the real-time monitoring of the battery current. Specifically, when the current temperature caused by the current in the battery exceeds the battery temperature and the current temperature is less than the threshold temperature, the battery cooling system is activated to cool the battery. However, this battery thermal management method based on current prediction of battery temperature cannot reduce the overall vehicle energy consumption of the battery, resulting in waste of resources. Therefore, the overall vehicle energy consumption of the battery is an urgent problem to be solved in this field.

[0045] Based on this, the embodiments of the present application provide a method, device and electronic equipment for determining the thermal management of a power battery. The embodiments provided by the present application solve the technical problem of high energy consumption in the thermal management of batteries in the prior art. The embodiments provided by the present application improve the overall energy consumption of the target vehicle by shortening the cooling time of the compressor for the target power battery.

[0046] See also Figure 1 , Figure 1 This is one of the flow charts of a method for determining thermal management of a power battery provided in an embodiment of the present application, such as Figure 1 As shown, the method for determining the thermal management of a power battery includes the following steps:

[0047] S101. When the target vehicle does not have vehicle navigation turned on, determine the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel count threshold.

[0048] In this step, while the target vehicle is driving, the driver can automatically choose to turn on the vehicle navigation or not. Generally, the driver will choose to turn on the vehicle navigation directly, but in special circumstances, or in some extreme environments (such as areas with poor signals), the target vehicle will be forced to turn off the vehicle navigation. At this time, if you want to determine the remaining distance of the target vehicle from the previous position to the target destination, it is obviously only possible to rely on the previous historical driving information of the target vehicle and the currently known information of the target vehicle. Specifically, the embodiment provided in the present application determines the target destination of the target vehicle based on the historical vehicle usage time of the target vehicle (such as [6:00-9:00], [18:00-21:00], etc.), the historical destinations that the target vehicle has previously reached, the number of times the target vehicle has reached each historical destination, and the preset route travel number threshold.

[0049] It can be understood that the target destination in the embodiment provided by the present application is to compare the number of times each historical destination is traveled with the preset route travel number threshold. When it is determined that the number of times a historical destination is traveled is greater than the preset route travel number threshold, and the number of times the historical destination is traveled is the largest, the historical destination is determined as the target destination of the target vehicle.

[0050] Among them, the historical vehicle usage time (such as [6:00-9:00], [18:00-21:00], etc.) in the embodiments provided in this application is determined according to the driver's driving habits and can be customized, changed and replaced according to different usage scenarios.

[0051] In the above description, the purpose of determining the magnitude relationship between the number of times the historical destination has been traveled and the threshold number of times the preset route has been traveled is to determine the operating condition of the target vehicle, such as the commuting condition.

[0052] Among them, the target vehicle in the embodiment provided by the present application is used to represent the vehicle being used by the driver in the current situation; the historical vehicle usage time is used to represent the driving time nodes of the target vehicle in many historical trips; the historical destination is used to represent the terminal position reached by the target vehicle in each historical trip; the preset route travel time threshold is used to represent the preset target vehicle travel time threshold of the same route.

[0053] S102 : Determine a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to reach the target destination, and the current driving time of the target vehicle.

[0054] In this step, after determining the target destination of the target vehicle, the embodiment provided in the present application needs to integrate the historical driving time of the target vehicle to the target destination according to the speed of the target vehicle to determine the total distance the target vehicle has traveled to the target destination, and then integrate the current driving time of the target vehicle according to the speed of the target vehicle to determine the driving distance of the target vehicle in the current state, and then determine the remaining distance of the target vehicle from the target destination based on the total distance and the driving distance.

[0055] The historical driving time is used to represent the time it takes for the target vehicle to reach the target destination in the historical trip; the current driving time is used to represent the time it takes for the target vehicle to travel currently.

[0056] S103. Determine a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery at the unit driving distance, wherein the temperature change value is an average value of the temperature change at the unit driving distance.

[0057] In this step, a target temperature change value of the target vehicle at the remaining distance is calculated based on the remaining distance and the temperature change value of the target power battery per unit driving distance without thermal management.

[0058] It is understandable that the temperature change value of the target power battery per unit driving distance in the embodiment provided in the present application may be specifically but not limited to: the average battery temperature rise change value per kilometer without thermal management.

[0059] S104 : Determine whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold, so as to achieve thermal management of the target power battery.

[0060] In this step, after determining the target temperature change value in this embodiment, the sum of the target temperature change value and the temperature value of the target power battery in the current state is determined as the target temperature when the target power battery reaches the target destination. The target temperature is then compared with the preset limit temperature threshold, and based on the comparison result, it is determined whether the target power battery needs to be cooled.

[0061] It can be understood that the embodiments provided in the present application are specific but not limited to cooling the target power battery through compressor refrigeration to achieve thermal management of the target power battery.

[0062] Among them, the preset extreme temperature threshold in the embodiment provided in this application is used to represent the critical temperature value at which the target vehicle is about to enter thermal runaway under extreme operating conditions.

[0063] The method for determining thermal management of a power battery provided in an embodiment of the present application, compared with the prior art, is as follows: when the vehicle navigation of the target vehicle is not turned on, the embodiment provided by the present application determines the target destination of the target vehicle based on the historical vehicle usage time, historical destinations and a preset route travel number threshold of the target vehicle; then determines the remaining distance of the target vehicle from the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to reach the target destination and the current driving time of the target vehicle; then determines the target temperature change value of the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery per unit driving distance; finally, determines whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state and the preset limit temperature threshold to achieve thermal management of the target power battery. The embodiment provided by the present application improves the overall energy consumption of the target vehicle by shortening the cooling time of the compressor for the target power battery.

[0064] In one embodiment, step S101 includes the following sub-steps:

[0065] Sub-step 1011: When the target vehicle does not have vehicle navigation turned on, determine whether the historical vehicle usage time of the target vehicle is within a preset vehicle usage time period.

[0066] In this step, it is assumed that the embodiment provided in this application specifically needs to determine whether the historical vehicle usage time of the target vehicle is within the preset vehicle usage time period of [6:00-9:00], [18:00-21:00].

[0067] Sub-step 1012: If the historical vehicle usage time of the target vehicle is within the preset vehicle usage time period, the target destination of the target vehicle is determined based on the number of times the target vehicle has traveled to the historical destination and the preset route travel number threshold.

[0068] In this step, if the historical vehicle usage time is within the preset vehicle usage time period, it is determined whether the actual number of times the target vehicle travels to the historical destination is greater than or equal to the preset route travel number threshold; if the actual number of times the target vehicle travels is greater than or equal to the preset route travel number threshold, the historical destination is determined to be the target destination of the target vehicle.

[0069] It is assumed that the preset route travel times threshold in the embodiment provided in this application can be specifically but not limited to be set to 18.

[0070] In one embodiment, step S102 includes the following sub-steps:

[0071] Sub-step 1021: Determine the total distance the target vehicle travels to the target destination based on the speed of the target vehicle and the historical driving time of the target vehicle to the target destination.

[0072] In this step, the total distance S of the target vehicle to the target destination can be calculated by integrating the speed of the target vehicle and the historical driving time of the target vehicle to the target destination.

[0073] Sub-step 1022: Determine the travel distance of the target vehicle in the current state based on the speed of the target vehicle and the current travel time of the target vehicle.

[0074] In this step, the travel distance S1 of the target vehicle in the current state can be calculated by integrating the speed of the target vehicle and the current travel time of the target vehicle.

[0075] Sub-step 1023: Determine the remaining distance between the target vehicle and the target destination based on the total distance and the travel distance.

[0076] In this step, the remaining distance between the target vehicle and the target destination is calculated by subtracting the total distance from the traveled distance.

[0077] It is assumed that the remaining distance in the embodiment provided in this application can be specifically represented by S2, and then S2=S-S1.

[0078] In one embodiment, determining a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery at the unit driving distance includes:

[0079] The target temperature change value of the target vehicle at the remaining distance is determined based on the remaining distance, the temperature change value of the target power battery per unit driving distance, the external ambient temperature, the driving mode of the target vehicle, and the driving habits of the driver.

[0080] In the above, the embodiment provided by the present application can determine the external ambient temperature correction coefficient based on the external ambient temperature, and can also determine different driver correction coefficients based on the driver's driving habits, and determine the driving mode correction coefficient based on the driving mode of the target vehicle. In this case, the target temperature change value of the target vehicle at the remaining distance can be specifically:

[0081] ΔT = average value of target power battery temperature change per unit driving distance without thermal management × remaining distance S2 × driver correction factor × driving mode correction factor × external ambient temperature correction factor;

[0082] Among them, △T is used to represent the target temperature change value of the target vehicle under the remaining distance; and the average value of the temperature change value of the target power battery per unit driving distance without thermal management is the average value of the battery temperature rise of the target vehicle before thermal management.

[0083] Here, the driving mode is used to characterize the driving style of the vehicle through switching between multiple modes; the driving habit is used to characterize the state parameters, driving parameters, and ID attribute parameters of different drivers during the driving process.

[0084] In one embodiment, step S104 includes the following sub-steps:

[0085] Sub-step 1041 : Determine a target temperature of the target power battery when it arrives at the target destination according to the target temperature change value and the temperature value of the target power battery in the current state.

[0086] In this step, assuming that the temperature value of the target power battery in the current state is specifically T, then the target temperature TT of the target power battery when it reaches the target destination is equal to the sum of the target temperature change value ΔT and the temperature value T.

[0087] Sub-step 1042: If the target temperature is greater than the preset limit temperature threshold, it is determined that the target power battery needs to be cooled.

[0088] In this step, assuming that the preset limit temperature threshold can be specifically represented by Tmax, and assuming that T+ΔT>Tmax, at this time, it is determined that the target power battery needs to be cooled.

[0089] Sub-step 1043: If the target temperature is less than or equal to the preset limit temperature threshold, it is determined that the target power battery does not need to be cooled.

[0090] In this step, if T+△T≤Tmax, it is determined that the target power battery does not need to be cooled. For example, when the current temperature of the target power battery is ≥40°C, the compressor refrigeration system is controlled to perform thermal management on the target power battery. However, after applying the embodiment provided by the present application, the target temperature does not exceed Tmax45°C, and the target power battery does not need to be cooled. That is, when the temperature value in the current state is ≥40°C, the target power battery also needs to be cooled.

[0091] The power battery thermal management determination method provided in the embodiments of the present application, compared to the prior art, determines the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel count threshold when vehicle navigation is not enabled. The remaining distance to the target destination is then determined based on the target vehicle's speed, the target vehicle's historical travel time to the target destination, and the target vehicle's current travel time. A target temperature change for the target vehicle based on the remaining distance and the target power battery temperature change per unit travel distance is then determined. Finally, based on the target temperature change, the target power battery's current temperature, and a preset limit temperature threshold, a determination is made as to whether cooling of the target power battery is required to achieve thermal management of the target power battery. The embodiments of the present application improve the overall energy consumption of the target vehicle by shortening the cooling time of the target power battery by the compressor. Specifically, when navigation is disabled for the target vehicle, the present application determines the target temperature change based on the remaining distance to the target destination, a driver correction factor, a driving mode correction factor, and an external ambient temperature correction factor, thereby prematurely disabling battery thermal management when the target temperature change for the remaining distance meets a threshold condition.

[0092] See also Figure 2 , Figure 2 This is a flow chart of a second method for determining thermal management of a power battery provided in an embodiment of the present application, as shown in FIG. Figure 2 As shown, the method for determining power battery thermal management includes:

[0093] S201. When the target vehicle does not have vehicle navigation turned on, determine the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel count threshold.

[0094] S202: When the target vehicle starts vehicle navigation, determine the remaining distance between the target vehicle and the target destination according to the navigation in the current state.

[0095] In this step, when the target vehicle starts vehicle navigation, the remaining distance between the target vehicle and the target destination can be determined directly based on the navigation in the current state.

[0096] S203 : Determine a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to reach the target destination, and the current driving time of the target vehicle.

[0097] S204. Determine a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery at the unit driving distance, wherein the temperature change value is used to represent an average value of the temperature change at the unit driving distance.

[0098] S205 : Determine whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state, and the preset limit temperature threshold, so as to achieve thermal management of the target power battery.

[0099] The power battery thermal management determination method provided in the embodiments of the present application, compared to the prior art, determines the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel count threshold when vehicle navigation is not enabled. The remaining distance to the target destination is then determined based on the target vehicle's speed, the target vehicle's historical travel time to the target destination, and the target vehicle's current travel time. A target temperature change for the target vehicle based on the remaining distance and the target power battery temperature change per unit travel distance is then determined. Finally, based on the target temperature change, the target power battery's current temperature, and a preset limit temperature threshold, a determination is made as to whether cooling of the target power battery is required to achieve thermal management of the target power battery. The embodiments of the present application improve the overall energy consumption of the target vehicle by shortening the cooling time of the target power battery by the compressor. Specifically, when navigation is disabled for the target vehicle, the present application determines the target temperature change based on the remaining distance to the target destination, a driver correction factor, a driving mode correction factor, and an external ambient temperature correction factor, thereby prematurely disabling battery thermal management when the target temperature change for the remaining distance meets a threshold condition.

[0100] See also Figure 3 , Figure 3 A flowchart of a method for determining a vehicle fault provided in an embodiment of the present application is shown in FIG. Figure 3As shown, the power battery thermal management determination device 300 includes:

[0101] The first determination module 310 is configured to determine a target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel times threshold when the target vehicle does not have vehicle navigation enabled.

[0102] The second determining module 320 is configured to determine a remaining distance between the target vehicle and the target destination according to the navigation in the current state when the target vehicle starts the vehicle navigation.

[0103] The third determining module 330 is configured to determine a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to reach the target destination, and the current driving time of the target vehicle.

[0104] The fourth determination module 340 is used to determine a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and the temperature change value of the target power battery per unit driving distance, wherein the temperature change value is used to represent the average value of the temperature change per unit driving distance.

[0105] The fifth determination module 350 is configured to determine whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold, so as to achieve thermal management of the target power battery.

[0106] In one embodiment, the first determining module 310 is specifically configured to:

[0107] When the target vehicle does not have vehicle navigation turned on, determine whether the historical vehicle usage time of the target vehicle is within a preset vehicle usage time period.

[0108] If the historical usage time of the target vehicle is within the preset usage time period, the target destination of the target vehicle is determined based on the number of times the target vehicle has traveled to the historical destination and the preset route travel number threshold.

[0109] In one embodiment, if the historical usage time of the target vehicle is within a preset usage time period, the target destination of the target vehicle is determined based on the number of times the target vehicle has traveled to the historical destination and a preset route travel number threshold, including: if the historical usage time of the target vehicle is within the preset vehicle usage time period, then determining whether the actual number of times the target vehicle has traveled to the historical destination is greater than or equal to the preset route travel number threshold.

[0110] If the actual number of trips is greater than or equal to a preset route trip number threshold, the historical destination is determined as the target destination of the target vehicle.

[0111] In one embodiment, the third determining module 330 is specifically configured to:

[0112] The total distance traveled by the target vehicle to the target destination is determined based on the target vehicle's speed and the target vehicle's historical travel time to the target destination.

[0113] Based on the speed of the target vehicle and the current driving time of the target vehicle, the driving distance of the target vehicle in the current state is determined.

[0114] Based on the total distance and the travel distance, the remaining distance of the target vehicle to the target destination is determined.

[0115] In one embodiment, the fourth determining module 340 is specifically configured to:

[0116] The target temperature change value of the target vehicle at the remaining distance is determined based on the remaining distance, the temperature change value of the target power battery per unit driving distance, the external ambient temperature, the driving mode of the target vehicle, and the driving habits of the driver.

[0117] In one embodiment, the fifth determining module 350 is specifically configured to:

[0118] The target temperature of the target power battery when it arrives at the target destination is determined according to the target temperature change value and the temperature value of the target power battery in the current state.

[0119] If the target temperature is greater than the preset limit temperature threshold, it is determined that the target power battery needs to be cooled.

[0120] If the target temperature is less than or equal to the preset limit temperature threshold, it is determined that the target power battery does not need to be cooled.

[0121] Compared to the prior art, the power battery thermal management determination device 300 provided in the embodiments of the present application determines the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel count threshold when vehicle navigation is not enabled. The remaining distance to the target destination is then determined based on the target vehicle's speed, the target vehicle's historical travel time to the target destination, and the target vehicle's current travel time. A target temperature change for the target vehicle based on the remaining distance and the target power battery's temperature change per unit travel distance is then determined. Finally, based on the target temperature change, the target power battery's current temperature, and a preset limit temperature threshold, the device determines whether cooling of the target power battery is required to achieve thermal management of the target power battery. The embodiments of the present application improve the target vehicle's overall energy consumption by shortening the compressor's cooling time for the target power battery. Specifically, when navigation is disabled for the target vehicle, the device determines the target temperature change based on the remaining distance to the target destination, a driver correction factor, a driving mode correction factor, and an external ambient temperature correction factor, thereby prematurely disabling battery thermal management when the target temperature change for the remaining distance meets a threshold condition.

[0122] See also Figure 4 , Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, electronic device 400 includes a processor 410 , a memory 420 , and a bus 430 .

[0123] The memory 420 stores machine-readable instructions executable by the processor 410. When the electronic device 400 is running, the processor 410 communicates with the memory 420 via the bus 430. When the machine-readable instructions are executed by the processor 410, the above-mentioned Figures 1 to 2 The specific implementation of the steps of the method for determining the thermal management of the power battery in the method embodiment shown can be found in the method embodiment and will not be repeated here.

[0124] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figures 1 to 2 The specific implementation of the steps of the method for determining the thermal management of the power battery in the method embodiment shown can be found in the method embodiment and will not be repeated here.

[0125] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0126] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0127] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0128] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0129] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0130] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0131] An embodiment of the present application further provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of the method for determining a fault identification model.

[0132] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0133] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0134] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0135] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0136] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0137] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0138] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0139] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0140] Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A method for determining thermal management of a power battery, characterized in that: The method for determining thermal management of a power battery includes: determining a target destination of the target vehicle based on a historical vehicle usage time, a historical destination, and a threshold of a preset number of travel times of the target vehicle when the vehicle navigation is not enabled for the target vehicle; Determining a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to the target destination, and the current driving time of the target vehicle; Determining a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and a temperature change value of the target power battery per unit driving distance, wherein the temperature change value is used to represent an average value of the temperature change per unit driving distance; Based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold, it is determined whether the target power battery needs to be cooled to achieve thermal management of the target power battery.

2. The method for determining thermal management of a power battery according to claim 1, characterized in that: The method of determining the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a threshold of the number of times a preset route is traveled, when the target vehicle does not have vehicle navigation enabled, includes: When the target vehicle does not have vehicle navigation turned on, determining whether the target vehicle's historical vehicle usage time is within a preset vehicle usage time period; If the historical vehicle usage time of the target vehicle is within the preset vehicle usage time period, the target destination of the target vehicle is determined based on the number of times the target vehicle has traveled to the historical destination and a preset route travel number threshold.

3. The method for determining thermal management of a power battery according to claim 2, characterized in that: If the target vehicle's historical vehicle usage time is within a preset vehicle usage time period, determining the target destination of the target vehicle based on the number of times the target vehicle has traveled to the historical destination and a preset route travel number threshold includes: If the target vehicle's historical usage time is within the preset usage time period, then determine whether the target vehicle's actual number of trips to the historical destination is greater than or equal to the preset route trip number threshold; If the actual number of travels is greater than or equal to a preset route travel number threshold, the historical destination is determined as the target destination of the target vehicle.

4. The method for determining thermal management of a power battery according to claim 1, characterized in that: The determining the remaining distance of the target vehicle from the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to the target destination, and the current driving time of the target vehicle includes: Determining a total distance traveled by the target vehicle to the target destination based on the target vehicle's speed and the target vehicle's historical travel time to the target destination; Determining a travel distance of the target vehicle in a current state based on the speed of the target vehicle and the current travel time of the target vehicle; A remaining distance of the target vehicle from the target destination is determined based on the total distance and the travel distance.

5. The method for determining thermal management of a power battery according to claim 1, characterized in that: The determining, based on the remaining distance and the temperature change value of the target power battery per unit driving distance, a target temperature change value of the target vehicle at the remaining distance includes: The target temperature change value of the target vehicle at the remaining distance is determined based on the remaining distance, the temperature change value of the target power battery per unit driving distance, the external ambient temperature, the driving mode of the target vehicle and the driving habits of the driver.

6. The method for determining thermal management of a power battery according to claim 1, characterized in that: The determining whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in the current state, and a preset limit temperature threshold includes: determining a target temperature of the target power battery when it arrives at the target destination based on the target temperature change value and the temperature value of the target power battery in the current state; If the target temperature is greater than a preset limit temperature threshold, determining that the target power battery needs to be cooled; If the target temperature is less than or equal to a preset limit temperature threshold, it is determined that the target power battery does not need to be cooled.

7. The method for determining thermal management of a power battery according to claim 1, characterized in that: After determining the target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel number threshold when the target vehicle does not turn on vehicle navigation, the method for determining power battery thermal management further includes: when the target vehicle turns on vehicle navigation, determining the remaining distance of the target vehicle from the target destination based on the navigation in a current state.

8. A device for determining thermal management of a power battery, characterized in that: The power battery thermal management determination device includes: a first determination module for determining a target destination of the target vehicle based on the target vehicle's historical vehicle usage time, historical destinations, and a preset route travel count threshold when the target vehicle does not have vehicle navigation enabled; a third determining module, configured to determine a remaining distance between the target vehicle and the target destination based on the speed of the target vehicle, the historical driving time of the target vehicle to reach the target destination, and the current driving time of the target vehicle; a fourth determining module, configured to determine a target temperature change value of the target vehicle at the remaining distance based on the remaining distance and a temperature change value of the target power battery at the unit driving distance, wherein the temperature change value is used to represent an average value of the temperature change at the unit driving distance; and a fifth determining module, configured to determine whether the target power battery needs to be cooled based on the target temperature change value, the temperature value of the target power battery in a current state, and a preset limit temperature threshold, so as to achieve thermal management of the target power battery.

9. An electronic device, characterized in that: include: A processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate via the bus, and the machine-readable instructions are executed by the processor to execute the steps of the method for determining thermal management of a power battery as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining thermal management of a power battery as described in any one of claims 1 to 7 are executed.

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