Vehicle control method and device, vehicle-mounted terminal and vehicle

Abstract

The invention is suitable for the technical field of automobiles, and provides a vehicle control method and device, a vehicle-mounted terminal and a vehicle. The method comprises the steps that when the vehicle stands, the vehicle is controlled based on the obtained remaining electric quantity of a battery pack of the vehicle at different times, the obtained current electric quantity of the battery pack and the obtained type of the vehicle; predicting target time when the electric quantity of the battery pack is reduced to a target threshold value; and controlling the vehicle based on the type and the target time. Compared with the prior art that prompt information is output and a user cannot be ensured to carry out corresponding operation on the vehicle indeed, the method can accurately predict the target time when the electric quantity is reduced to the target threshold by combining the residual electric quantity of the battery pack, the current electric quantity and the type of the vehicle, and automatically carry out corresponding control on the vehicle by combining the type and the target time; and it is ensured that the vehicle can be correspondingly controlled in time, so that the problem that the vehicle cannot be powered on or an engine cannot be started due to the fact that the vehicle is in a standing state for a long time is avoided or reduced, and the practicability of the vehicle is improved.

Description

Technical Field

[0001] The present application belongs to the field of automobile technology, and in particular, relates to a vehicle control method, device, vehicle-mounted terminal and vehicle. Background Art

[0002] When the vehicle is stationary, the self-discharge of the battery in the vehicle will cause the vehicle's power to gradually decrease. When the power decreases to a certain level, it may cause the battery to be under-voltage, causing the vehicle to be unable to power on or start the engine. Therefore, how to prevent the vehicle from being unable to power on or start the engine when it is stationary has become one of the problems that need to be solved urgently.

[0003] The prior art usually simply outputs prompt information for prompting the user to perform corresponding operations, which is not comprehensive enough and difficult to meet actual needs, thereby reducing the practicality of the vehicle. Summary of the invention

[0004] The embodiments of the present application provide a vehicle control method, device, vehicle-mounted terminal and vehicle to solve the problem that the prior art is not comprehensive enough and difficult to meet actual needs, thereby reducing the practicality of the vehicle.

[0005] In a first aspect, an embodiment of the present application provides a vehicle control method, including:

[0006] When the vehicle is stationary, obtaining the remaining power of the battery pack of the vehicle at different times, the current power of the battery pack, and the type of the vehicle;

[0007] Based on the plurality of the remaining power, the current power and the type, predict a target time for the power of the battery pack to drop to a target threshold;

[0008] Based on the type and the target time, the vehicle is controlled.

[0009] Optionally, the vehicle is provided with a thermal runaway inspection function, and the different times are different thermal runaway inspection times; and obtaining the remaining power of the battery pack of the vehicle at different times includes:

[0010] Obtaining the open circuit voltage of the target single cell in the battery pack at the different thermal runaway inspection times; the target single cell refers to the single cell corresponding to the minimum open circuit voltage in the battery pack at the different thermal runaway inspection times;

[0011] Obtain a historical electrical quantity set corresponding to each open circuit voltage in a historical time period;

[0012] Based on each of the historical power sets and the different thermal runaway inspection times, the remaining power corresponding to each of the open circuit voltages is calculated.

[0013] Optionally, the predicting a target time for the power of the battery pack to drop to a target threshold based on the plurality of the remaining power, the current power, and the type includes:

[0014] Calculating a rate of decrease of the power of the battery pack based on the plurality of remaining powers;

[0015] determining the target threshold based on the type;

[0016] The target time is predicted based on the power decrease rate and the current power.

[0017] Optionally, determining the target threshold based on the type includes:

[0018] When the type is a hybrid vehicle, the minimum power required to start the engine of the vehicle is determined as the target threshold;

[0019] When the type is a pure electric vehicle, the target threshold is calculated based on the power threshold and the preset power range.

[0020] Optionally, the predicting the target time based on the power decrease rate and the current power includes:

[0021] Based on the power decrease rate, predicting the first time when the battery pack decreases from the current power to the target threshold;

[0022] The first time is adjusted based on a preset time range to obtain the target time.

[0023] Optionally, the controlling the vehicle based on the type and the target time includes:

[0024] If the type is a hybrid vehicle, when the target time is reached, controlling the engine of the vehicle to charge the battery pack;

[0025] If the type is a pure electric vehicle, the vehicle is controlled according to a comparison result between the target time and the set time.

[0026] Optionally, the vehicle is provided with a thermal runaway inspection function, and the controlling the vehicle according to the comparison result between the target time and the set time includes:

[0027] If the comparison result is that the target time is greater than or equal to the set time, determining the target frequency according to the difference between the target time and the set time;

[0028] reducing the frequency of thermal runaway inspection to the target frequency;

[0029] A thermal runaway detection device of the vehicle is controlled to perform a thermal runaway inspection on the vehicle based on the target frequency.

[0030] In a second aspect, an embodiment of the present application provides a vehicle control device, including:

[0031] A first acquisition unit, used for acquiring, when the vehicle is stationary, the remaining power of the battery pack of the vehicle at different times, the current power of the battery pack, and the type of the vehicle;

[0032] A first prediction unit, configured to predict a target time for the power of the battery pack to drop to a target threshold based on the plurality of the remaining power, the current power and the type;

[0033] A first control unit is used to control the vehicle based on the type and the target time.

[0034] In a third aspect, an embodiment of the present application provides a vehicle-mounted terminal, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, a vehicle control method as described in any one of the first aspects above is implemented.

[0035] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the vehicle control method as described in any one of the above-mentioned first aspects is implemented.

[0036] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a vehicle-mounted terminal, enables the vehicle-mounted terminal to execute the vehicle control method described in any one of the above-mentioned first aspects.

[0037] In a sixth aspect, an embodiment of the present application provides a vehicle, comprising an on-board terminal, wherein the on-board terminal is used to execute the vehicle control method as described in any one of the first aspects.

[0038] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0039] A vehicle control method provided in an embodiment of the present application can accurately predict the target time when the battery pack's power drops to the target threshold by acquiring the remaining power of the vehicle's battery pack at different times, the current power of the battery pack, and the type of vehicle; then the vehicle can be controlled accordingly based on the type and target time. Compared with the prior art that only outputs prompt information and cannot guarantee that the user actually performs corresponding operations on the vehicle, since the minimum power required for different types of vehicles when stationary is different, and the processing methods of different types of vehicles after the power is reduced to the minimum power when stationary are also different, therefore, when the vehicle is stationary, the present method can automatically control the vehicle accordingly in combination with the above type and the above target time, which can not only ensure timely control of the vehicle, but also ensure that only accurate control is required for different types of vehicles, so as to avoid or reduce the problem of different types of vehicles being unable to power on or unable to start the engine due to being in a stationary state for a long time, thereby improving the practicality of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 is a flow chart of an implementation of a vehicle control method provided by an embodiment of the present application;

[0042] Figure 2 is a flow chart of an implementation of a vehicle control method provided by another embodiment of the present application;

[0043] Figure 3 is a flow chart of an implementation of a vehicle control method provided in yet another embodiment of the present application;

[0044] Figure 4 is a structural schematic diagram of a vehicle control device provided by an embodiment of the present application;

[0045] Figure 5 It is a structural diagram of a vehicle-mounted terminal provided in one embodiment of the present application. DETAILED DESCRIPTION

[0046] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0047] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0048] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0050] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0051] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0052] In actual applications, when a vehicle is stationary, the self-discharge of the battery in the vehicle will easily cause the vehicle's power to gradually decrease. When the power decreases to a certain level, it may cause the battery to be under-voltage, causing the vehicle to be unable to power on or start the engine. Therefore, how to prevent the vehicle from being unable to power on or start the engine when it is stationary has become one of the problems that need to be solved urgently.

[0053] The existing technology usually simply outputs prompt information to prompt the user to perform corresponding operations. It is not comprehensive enough to ensure that the user actually performs the corresponding operations on the vehicle according to the prompt information, thereby being unable to avoid the situation where the vehicle in a stationary state cannot be powered on or the engine cannot be started. In other words, the existing technology is difficult to meet actual needs and cannot achieve accurate control of the vehicle, thereby reducing the practicality of the vehicle.

[0054] It should be noted that in all the embodiments of the present application, the vehicles are vehicles that include battery packs, such as hybrid vehicles and pure electric vehicles, and the vehicles are provided with a thermal runaway inspection function.

[0055] See also Figure 1 , Figure 1 This is a flow chart of a vehicle control method provided by an embodiment of the present application. In the embodiment of the present application, the execution subject of the vehicle control method is a vehicle-mounted terminal.

[0056] like Figure 1 As shown, the vehicle control method provided in one embodiment of the present application may include S101 to S103, which are described in detail as follows:

[0057] In S101, when the vehicle is stationary, the remaining power of the battery pack of the vehicle at different times, the current power of the battery pack, and the type of the vehicle are obtained.

[0058] In the embodiment of the present application, in order to avoid the situation that the vehicle in a stationary state cannot be powered on or the engine cannot be started, the relevant personnel can set a timer task in the vehicle terminal. The timer task is specifically to obtain the remaining power of the vehicle's battery pack based on a preset time interval when the vehicle is stationary. The preset time interval can be set according to actual needs and is not limited here.

[0059] Based on this, after detecting that the vehicle is stationary, the vehicle terminal can perform the above-mentioned timing task, that is, obtain the remaining power of the vehicle's battery pack based on the preset time interval, so as to obtain the remaining power of the vehicle's battery pack at different times. At the same time, the vehicle terminal can also obtain the current power of the battery pack and determine the type of vehicle. The types of vehicles include but are not limited to: hybrid vehicles and pure electric vehicles.

[0060] In practical applications, hybrid vehicles refer to vehicles whose vehicle drive system is composed of two or more single drive systems that can operate simultaneously. Pure electric vehicles refer to vehicles that are driven by electric motors and whose driving power comes from an on-board rechargeable energy storage system.

[0061] In one embodiment of the present application, since the vehicle is provided with a thermal runaway inspection function to periodically detect whether the vehicle has thermal runaway when the vehicle is stationary, therefore, in order to reduce energy consumption and avoid the vehicle being stationary, in addition to periodically detecting whether the vehicle has thermal runaway, it is also necessary to periodically obtain the remaining power of the vehicle's battery pack at additional times. The on-board terminal can periodically detect whether the vehicle has thermal runaway and obtain the remaining power of the vehicle at different thermal runaway inspection times, thereby obtaining the remaining power of the battery pack at different times.

[0062] Based on this, the vehicle terminal can specifically obtain the remaining power of the vehicle's battery pack at different times according to the following steps, as detailed below:

[0063] Obtaining the open circuit voltage of the target single cell in the battery pack at the different thermal runaway inspection times; the target single cell refers to the single cell corresponding to the minimum open circuit voltage in the battery pack at the different thermal runaway inspection times;

[0064] Obtain a historical electrical quantity set corresponding to each open circuit voltage in a historical time period;

[0065] Based on each of the historical power sets and the different thermal runaway inspection times, the remaining power corresponding to each of the open circuit voltages is calculated.

[0066] In practical applications, since the battery pack of a vehicle usually includes multiple single cells, the battery parameters of each single cell are different, resulting in different power levels of each single cell at the same time. Therefore, in order to obtain the accurate remaining power of the battery pack at different thermal runaway times, in this embodiment, the vehicle terminal can obtain the open circuit voltage of the target single cell in the battery pack at different thermal runaway inspection times. The target single cell refers to the single cell corresponding to the minimum open circuit voltage in the battery pack at different thermal runaway inspection times.

[0067] It should be noted that, at different thermal runaway inspection times, the target single cell may be the same single cell or may not be the same single cell.

[0068] Open circuit voltage (OCV) refers to the terminal voltage of a battery in an open circuit state. The open circuit voltage of a battery is equal to the difference between the electrode potential of the positive electrode and the electrode potential of the negative electrode of the battery when the battery is disconnected (i.e. when no current passes through the two electrodes).

[0069] In this embodiment, after obtaining the open circuit voltage of the target single battery at different thermal runaway inspection times, in order to improve the accuracy of determining the remaining power corresponding to each open circuit voltage, the vehicle terminal can obtain the historical power set corresponding to each open circuit voltage in the historical time period. The historical time period can be set according to actual needs and is not limited here.

[0070] It should be noted that the historical power set corresponding to each open circuit voltage includes all historical power corresponding to the target single battery at the open circuit voltage within the historical time period.

[0071] For any open circuit voltage, the vehicle terminal can search for at least one historical electrical quantity at the same time as the thermal runaway inspection time corresponding to the open circuit voltage from the historical electrical quantity set corresponding to the open circuit voltage.

[0072] It should be noted that the above-mentioned being at the same time does not include the date, but only includes the hours, minutes and seconds.

[0073] Afterwards, for any open circuit voltage, the vehicle terminal can calculate the average of at least one historical power quantity corresponding to the open circuit voltage at the same time as the thermal runaway inspection time, and determine the calculated average power quantity as the remaining power quantity corresponding to the open circuit voltage.

[0074] In some possible embodiments, since the vehicle terminal pre-stores a preset calibration table for describing the relationship between different open circuit voltages and power, in order to improve the acquisition rate of the remaining power corresponding to each open circuit voltage, thereby improving the working efficiency of the vehicle terminal, the vehicle terminal can find the power corresponding to the open circuit voltage of each target single battery from the preset calibration table, and determine the respective power as the remaining power of the battery pack at each thermal runaway inspection time. The preset calibration table is used to describe the relationship between different open circuit voltages and power.

[0075] Based on this, in another embodiment of the present application, the vehicle-mounted terminal can determine the minimum open circuit voltage among the open circuit voltages of each single cell in the battery pack at the current moment, and search the target power corresponding to the minimum open circuit voltage from a preset calibration table, and determine the target power as the current power of the battery pack.

[0076] In S102, based on the remaining power, the current power and the type, a target time for the power of the battery pack to drop to a target threshold is predicted.

[0077] In the embodiment of the present application, after obtaining multiple remaining power, current power and vehicle types of the battery pack at different times, the vehicle-mounted terminal can predict the target time when the power of the battery pack drops to the target threshold based on the multiple remaining power, current power and vehicle types. The target threshold can be determined according to the type of vehicle.

[0078] In some possible embodiments, the target threshold may refer to the charge level of the battery pack of the vehicle when an undervoltage condition occurs.

[0079] In one embodiment of the present application, in order to improve the prediction accuracy of the target time, the vehicle terminal can directly input the above-mentioned multiple remaining power, current power and vehicle type into the trained time prediction model for processing, so as to predict the target time when the power of the battery pack drops from the current power to the target threshold. The time prediction model is trained by a pre-built neural network model.

[0080] In this embodiment, the time prediction model can be obtained by training a pre-built neural network model based on a preset sample set. Each sample data in the preset sample set includes sample information (the sample information includes multiple remaining power levels of the vehicle's battery pack, the current power level, and the type of vehicle) and a sample time corresponding to the sample information. When training the pre-built neural network model, the sample information in each sample data is used as the input of the neural network model, and the sample time corresponding to the sample information in each sample data is used as the output of the neural network model. Through training, the neural network model can learn the correspondence between all possible sample information and sample time, and use the trained neural network model as the time prediction model.

[0081] In another embodiment of the present application, since different types of vehicles have different minimum power requirements when stationary, that is, the target thresholds corresponding to the power of the battery packs of different types of vehicles are different, and under the premise of different target thresholds, the target time for the power of the battery packs of different types of vehicles to drop to the target threshold will also be different. Therefore, in order to improve the prediction accuracy of the target time corresponding to different types of vehicles, the vehicle terminal can also use Figure 2 Steps S201 to S203 shown in the figure predict the target time when the battery power drops to the target threshold, as detailed below:

[0082] In S201, the power reduction rate of the battery pack is calculated based on the multiple remaining powers.

[0083] In this embodiment, the vehicle-mounted terminal can calculate the rate of decrease of the power of the battery pack according to the multiple remaining powers and their respective corresponding times.

[0084] In some possible embodiments, in order to improve calculation efficiency, the vehicle-mounted terminal can calculate the first difference between the remaining power corresponding to the earliest time and the remaining power corresponding to the latest time among multiple remaining power values, calculate the second difference between the earliest time and the latest time, and determine the ratio between the first difference and the second difference as the above-mentioned power decrease rate.

[0085] In other possible embodiments, in order to improve the calculation accuracy of the power reduction rate, the vehicle terminal can sequentially calculate the power difference and time difference between the remaining power at two adjacent times to obtain multiple power differences and multiple time differences.

[0086] Afterwards, the vehicle terminal can calculate the ratio between each power difference and its corresponding time difference, and average all the ratios to obtain a target average. Finally, the vehicle terminal can determine the target average as the power reduction rate.

[0087] In S202, the target threshold is determined based on the type.

[0088] In actual applications, since different types of vehicles handle low battery power in different ways and different handling methods correspond to different power thresholds, in this embodiment, the vehicle terminal can accurately determine the target threshold based on the type of vehicle.

[0089] Specifically, when the type of vehicle includes a hybrid vehicle and a pure electric vehicle, the vehicle-mounted terminal may specifically perform step S202 according to the following steps, which are described in detail as follows:

[0090] When the type is a hybrid vehicle, the minimum power required to start the engine of the vehicle is determined as the target threshold;

[0091] When the type is a pure electric vehicle, the target threshold is calculated based on the power threshold and the preset power range.

[0092] In this embodiment, when the vehicle type is a hybrid vehicle, since the hybrid vehicle includes an engine and can charge the battery pack, the target threshold corresponding to the hybrid vehicle may be the minimum power of the battery pack when the engine needs to be started to charge the battery pack.

[0093] When the vehicle type is a pure electric vehicle, since the pure electric vehicle is powered only by a battery pack, in some possible embodiments, the target threshold corresponding to the pure electric vehicle is the power threshold corresponding to when the battery pack is under-voltage.

[0094] In some other possible embodiments, when the power level of the battery pack has dropped to the above power level threshold, it means that the battery pack is under-voltage, and thus it is impossible to avoid problems such as failure to power on or failure to start the engine due to under-voltage of the battery pack. Therefore, in order to successfully solve the above problems, the vehicle terminal can calculate the target threshold based on the power level threshold and the preset power level range. The preset power level range can be determined according to actual needs and is not limited here. For example, the preset power level range can be +10%.

[0095] Specifically, since the power level of a battery pack is usually expressed as a percentage, the vehicle-mounted terminal can directly determine the sum of the power threshold and the preset power range as the target threshold corresponding to the pure electric vehicle model.

[0096] In S203, the target time is predicted based on the power reduction rate and the current power.

[0097] In this embodiment, the vehicle terminal can calculate the battery pack's drop amplitude based on the current power and the target threshold, and determine the quotient between the drop amplitude and the power drop rate as the target time for the battery pack's power to drop from the current power to the target threshold.

[0098] It should be noted that, in conjunction with S202 , since different types of target thresholds are different, the target time for the power of the battery packs of different types of vehicles to drop from the current power to the target threshold is also different.

[0099] In some possible embodiments, since the engine cannot be started when the battery pack of the vehicle is too low in power, when the vehicle is a hybrid vehicle, in order to ensure that the engine of the vehicle can be successfully started and the battery pack can be charged, the vehicle terminal can specifically perform step S203 according to the following steps, as detailed below:

[0100] Based on the power decrease rate, predicting the first time when the battery pack decreases from the current power to the target threshold;

[0101] The first time is adjusted based on a preset time range to obtain the target time.

[0102] In this embodiment, the vehicle terminal can calculate the battery pack's drop amplitude based on the current power and the target threshold, and determine the quotient between the drop amplitude and the power drop rate as the first time the battery pack's power drops from the current power to the target threshold.

[0103] When the battery pack's power level drops below the power threshold, it means that the battery pack is under-voltage at this time, and thus the problem of being unable to start the engine due to the battery pack under-voltage cannot be avoided. Therefore, in order to ensure that the engine can be successfully started, the vehicle-mounted terminal can adjust the first time based on the preset time range, that is, the direct difference between the first time and the preset time range is determined as the target time, so that the target time is earlier than the first time, that is, the battery pack's power level at the target time has not reached the above power threshold, so that the engine can be successfully started at the target time. Among them, the preset time range can be determined according to actual needs and is not limited here. Exemplarily, the preset time range can be one hour.

[0104] In S103, the vehicle is controlled based on the type and the target time.

[0105] In an embodiment of the present application, since different types of vehicles have different ways of solving problems such as inability to power on or inability to start the engine due to undervoltage of the battery pack, and different methods use the target time differently, the on-board terminal can determine the vehicle control strategy according to the type of vehicle and the determined target time, and control the vehicle based on the vehicle control strategy.

[0106] The vehicle control strategy includes, but is not limited to: a first strategy of controlling the vehicle to start the engine at a target time and controlling the engine to charge the battery pack, and a second strategy of controlling the thermal runaway inspection device of the vehicle to perform thermal runaway inspection on the vehicle at a target frequency. The thermal runaway inspection device can be determined according to actual needs and is not limited here.

[0107] It should be noted that the target frequency is lower than the inspection frequency of the vehicle's thermal runaway inspection equipment at the current moment.

[0108] Based on this, when the vehicle type is a hybrid model, since the hybrid model includes an engine, the vehicle-mounted terminal can determine that the vehicle control strategy for the vehicle at this time is the above-mentioned first strategy; when the vehicle type is a pure electric model, since the pure electric model does not have an engine, the vehicle-mounted terminal can determine that the vehicle control strategy for the vehicle at this time is the above-mentioned second strategy.

[0109] In one embodiment of the present application, since different types of vehicles have different ways of solving problems such as failure to power on or failure to start the engine due to undervoltage of the battery pack, and different methods use the target time differently, in order to improve the control efficiency of the vehicle, the vehicle terminal can specifically use the following methods: Figure 3 The steps S301 to S302 shown in FIG. 103 are described in detail as follows:

[0110] In S301, if the type is a hybrid vehicle, then when the target time is reached, the engine of the vehicle is controlled to charge the battery pack.

[0111] In S302, if the type is a pure electric vehicle, the vehicle is controlled according to a comparison result between the target time and the set time.

[0112] In this embodiment, when the on-board terminal detects that the type of the vehicle is a hybrid model, it indicates that the vehicle at this time includes an engine. That is to say, the problem of the vehicle being unable to power on or start the engine due to undervoltage of the battery pack can be avoided by starting the engine at an appropriate time and controlling the engine to charge the battery pack. Therefore, at this time, the on-board terminal can set a timed wake-up task to start the engine for charging based on the target time, and execute the timed wake-up task when the target time is reached, that is, control the vehicle's engine to charge the battery pack.

[0113] When the vehicle terminal detects that the vehicle type is a pure electric vehicle, it means that the vehicle does not include an engine at this time, that is, it is impossible to start the engine at the right time and control the engine to charge the battery pack to avoid problems such as the vehicle being unable to power on or start the engine due to undervoltage of the battery pack. Therefore, at this time, the vehicle terminal can control the vehicle according to the comparison result between the target time and the set time. The set time can be set according to actual needs and is not limited here. For example, the set time can be 72 hours.

[0114] Specifically, when the vehicle-mounted terminal detects that the comparison result is that the target time is greater than the set time, it means that the battery pack of the vehicle self-discharges slowly during the period when the vehicle is stationary, that is, the battery pack's power decreases slowly. Therefore, in order to reduce the static current consumption of the battery pack and to extend the under-voltage time of the battery pack due to over-discharge as much as possible and slow down the rate of decrease in the battery pack's power, the vehicle-mounted terminal can reduce the inspection frequency of the thermal runaway inspection equipment and control the vehicle's thermal runaway inspection equipment to perform thermal runaway inspections at the reduced inspection frequency.

[0115] In one embodiment of the present application, when the type of vehicle is a pure electric vehicle, the vehicle at this time does not include an engine, that is, it is impossible to avoid the problem of the vehicle being unable to power on or unable to start the engine due to undervoltage of the battery pack by starting the engine at an appropriate time and controlling the engine to charge the battery pack. However, at this time, the vehicle is still provided with a thermal runaway inspection function, and each thermal runaway inspection will accelerate the consumption of the battery pack. Therefore, in order to improve the control accuracy of the vehicle and slow down the rate of decrease of the battery pack's power, the vehicle-mounted terminal can specifically perform step S302 according to the following steps, as described in detail as follows:

[0116] If the comparison result is that the target time is greater than or equal to the set time, determining the target frequency according to the difference between the target time and the set time;

[0117] reducing the frequency of thermal runaway inspection to the target frequency;

[0118] A thermal runaway detection device of the vehicle is controlled to perform a thermal runaway inspection on the vehicle based on the target frequency.

[0119] In this embodiment, when the vehicle-mounted terminal detects that the comparison result is that the target time is greater than the set time, it means that the battery pack of the vehicle self-discharges slowly during the period when the vehicle is stationary, that is, the battery pack's power decreases slowly. Therefore, in order to reduce the static current consumption of the battery pack, to extend the under-voltage time of the battery pack due to over-discharge as much as possible, and to slow down the rate of decrease of the battery pack's power, the vehicle-mounted terminal can determine the target frequency based on the difference between the target time and the set time.

[0120] It should be noted that the above difference is negatively correlated with the target frequency, that is, the larger the difference, the lower the target frequency, and the lower the difference, the higher the target frequency.

[0121] It can be understood that the larger the above difference is, the target time is much greater than the set time, that is, when the vehicle is stationary, the self-discharge of the vehicle's battery pack is slower, that is, the battery power decreases slower, so the above target frequency can be set lower.

[0122] Afterwards, the on-board terminal can reduce the frequency of thermal runaway inspection to the target frequency, and control the vehicle's thermal runaway detection equipment to perform thermal runaway inspection on the vehicle based on the target frequency.

[0123] It should be noted that the maximum value of the target frequency is the frequency corresponding to the set time.

[0124] From the above, it can be seen that a vehicle control method provided by an embodiment of the present application can accurately predict the target time when the battery pack's power drops to the target threshold by acquiring the remaining power of the vehicle's battery pack at different times, the current power of the battery pack, and the type of vehicle; then the vehicle can be controlled accordingly based on the type and target time. Compared with the prior art that only outputs prompt information and cannot guarantee that the user actually performs corresponding operations on the vehicle, since the minimum power required for different types of vehicles when stationary is not the same, and the processing methods of different types of vehicles after the power is reduced to the minimum power when stationary are also different, therefore, when the vehicle is stationary, the present method can automatically control the vehicle accordingly in combination with the above type and the above target time, which can not only ensure timely control of the vehicle, but also ensure that only accurate control is required for different types of vehicles, so as to avoid or reduce the problem of different types of vehicles being unable to power on or unable to start the engine due to being in a stationary state for a long time, thereby improving the practicality of the vehicle.

[0125] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0126] Corresponding to a vehicle control method described in the above embodiment, Figure 4 The structure diagram of a vehicle control device provided by an embodiment of the present application is shown. For the convenience of explanation, only the part related to the embodiment of the present application is shown. Figure 4 The vehicle control device 400 includes: a first acquisition unit 41, a first prediction unit 42 and a first control unit 43. Among them:

[0127] The first acquisition unit 41 is used for acquiring the remaining power of the battery pack of the vehicle at different times, the current power of the battery pack and the type of the vehicle when the vehicle is stationary.

[0128] The first prediction unit 42 is used for predicting a target time for the power of the battery pack to drop to a target threshold based on the remaining power, the current power and the type.

[0129] The first control unit 43 is used for controlling the vehicle based on the type and the target time.

[0130] In one embodiment of the present application, the vehicle is provided with a thermal runaway inspection function, and the different times are different thermal runaway inspection times; the first acquisition unit 41 specifically includes: a second acquisition unit, a third acquisition unit and a first calculation unit. Among them:

[0131] The second acquisition unit is used to acquire the open circuit voltage of the target single cell in the battery pack under the different thermal runaway inspection times; the target single cell refers to the single cell corresponding to the minimum open circuit voltage in the battery pack under the different thermal runaway inspection times.

[0132] The third acquisition unit is used to acquire a historical electrical quantity set corresponding to each of the open circuit voltages within a historical time period.

[0133] The first calculation unit is used to calculate the remaining power corresponding to each of the open circuit voltages based on each of the historical power sets and the different thermal runaway inspection times.

[0134] In one embodiment of the present application, the first prediction unit 42 specifically includes: a second calculation unit, a first determination unit and a second prediction unit.

[0135] The second calculation unit is used to calculate the power reduction rate of the battery pack based on the multiple remaining powers.

[0136] The first determining unit is configured to determine the target threshold based on the type.

[0137] The second prediction unit is used to predict the target time based on the power reduction rate and the current power.

[0138] In one embodiment of the present application, the first determining unit specifically includes: a second determining unit and a third calculating unit.

[0139] The second determination unit is used to determine the minimum power corresponding to the engine required to start the vehicle as the target threshold when the type is a hybrid vehicle.

[0140] The third calculation unit is used to calculate the target threshold value according to the power threshold value and the preset power range when the type is a pure electric vehicle.

[0141] In one embodiment of the present application, the second prediction unit specifically includes: a third prediction unit and an adjustment unit.

[0142] The third prediction unit is used to predict, based on the power reduction rate, a first time for the battery pack to decrease from the current power to the target threshold.

[0143] The adjustment unit is used to adjust the first time based on a preset time range to obtain the target time.

[0144] In one embodiment of the present application, the first control unit 43 specifically includes: a second control unit and a third control unit. Among them:

[0145] The second control unit is used for controlling the engine of the vehicle to charge the battery pack when the target time is reached if the type is a hybrid vehicle.

[0146] The third control unit is used to control the vehicle according to the comparison result between the target time and the set time if the type is a pure electric vehicle.

[0147] In one embodiment of the present application, the vehicle is provided with a thermal runaway inspection function, and the third control unit specifically includes: a third determination unit, a reduction unit and a fourth control unit.

[0148] The third determining unit is configured to determine the target frequency according to a difference between the target time and the set time if the comparison result is that the target time is greater than or equal to the set time.

[0149] The reducing unit is used to reduce the frequency of the thermal runaway inspection to the target frequency.

[0150] The fourth control unit is used to control the thermal runaway detection device of the vehicle to perform a thermal runaway inspection on the vehicle based on the target frequency.

[0151] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0152] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0153] Figure 5 This is a schematic diagram of the structure of a vehicle-mounted terminal provided in one embodiment of the present application. Figure 5 As shown, the vehicle terminal 5 of this embodiment includes: at least one processor 50 ( Figure 5Only one is shown in the figure) a processor, a memory 51, and a computer program 52 stored in the memory 51 and executable on the at least one processor 50, and when the processor 50 executes the computer program 52, the steps in any of the above-mentioned vehicle control method embodiments are implemented.

[0154] The vehicle-mounted terminal may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will appreciate that Figure 5 It is only an example of the vehicle-mounted terminal 5 and does not constitute a limitation on the vehicle-mounted terminal 5. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, it may also include input and output devices, network access devices, etc.

[0155] The processor 50 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0156] In some embodiments, the memory 51 may be an internal storage unit of the vehicle-mounted terminal 5, such as the memory of the vehicle-mounted terminal 5. In other embodiments, the memory 51 may also be an external storage device of the vehicle-mounted terminal 5, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the vehicle-mounted terminal 5. Further, the memory 51 may also include both the internal storage unit of the vehicle-mounted terminal 5 and an external storage device. The memory 51 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 51 may also be used to temporarily store data that has been output or is to be output.

[0157] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0158] An embodiment of the present application provides a computer program product. When the computer program product runs on a vehicle-mounted terminal, the vehicle-mounted terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0159] 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 present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying the computer program code to the vehicle-mounted terminal, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electric carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0160] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0161] The embodiments described above 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, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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, and should all be included in the protection scope of the present application.

Claims

1. A vehicle control method, characterized in that: include: When the vehicle is stationary, obtaining the remaining power of the battery pack of the vehicle at different times, the current power of the battery pack, and the type of the vehicle; Based on the plurality of the remaining power, the current power and the type, predict a target time for the power of the battery pack to drop to a target threshold; Based on the type and the target time, the vehicle is controlled.

2. The vehicle control method according to claim 1, characterized in that: The vehicle is provided with a thermal runaway inspection function, and the different times are different thermal runaway inspection times; The obtaining of the remaining power of the battery pack of the vehicle at different times includes: Obtaining the open circuit voltage of the target single cell in the battery pack at the different thermal runaway inspection times; the target single cell refers to the single cell corresponding to the minimum open circuit voltage in the battery pack at the different thermal runaway inspection times; Obtain a historical electrical quantity set corresponding to each open circuit voltage in a historical time period; Based on each of the historical power sets and the different thermal runaway inspection times, the remaining power corresponding to each of the open circuit voltages is calculated.

3. The vehicle control method according to claim 1, characterized in that: The predicting, based on the plurality of the remaining power, the current power and the type, a target time for the power of the battery pack to drop to a target threshold value includes: Calculating a rate of decrease of the power of the battery pack based on the plurality of remaining powers; determining the target threshold based on the type; The target time is predicted based on the power decrease rate and the current power.

4. The vehicle control method according to claim 3, characterized in that: The determining the target threshold based on the type includes: When the type is a hybrid vehicle, the minimum power required to start the engine of the vehicle is determined as the target threshold; When the type is a pure electric vehicle, the target threshold is calculated based on the power threshold and the preset power range.

5. The vehicle control method according to claim 3, characterized in that: The predicting the target time based on the power decrease rate and the current power includes: Based on the power decrease rate, predicting the first time when the battery pack decreases from the current power to the target threshold; The first time is adjusted based on a preset time range to obtain the target time.

6. The vehicle control method according to any one of claims 1 to 5, characterized in that: The controlling the vehicle based on the type and the target time includes: If the type is a hybrid vehicle, when the target time is reached, controlling the engine of the vehicle to charge the battery pack; If the type is a pure electric vehicle, the vehicle is controlled according to a comparison result between the target time and the set time.

7. The vehicle control method according to claim 6, characterized in that: The vehicle is provided with a thermal runaway inspection function, and the vehicle is controlled according to a comparison result between the target time and the set time, including: If the comparison result is that the target time is greater than or equal to the set time, determining the target frequency according to the difference between the target time and the set time; reducing the frequency of thermal runaway inspection to the target frequency; A thermal runaway detection device of the vehicle is controlled to perform a thermal runaway inspection on the vehicle based on the target frequency.

8. A vehicle control device, characterized in that: include: A first acquisition unit, used for acquiring, when the vehicle is stationary, the remaining power of the battery pack of the vehicle at different times, the current power of the battery pack, and the type of the vehicle; A first prediction unit, configured to predict a target time for the power of the battery pack to drop to a target threshold based on the plurality of the remaining power, the current power and the type; A first control unit is used to control the vehicle based on the type and the target time.

9. A vehicle-mounted terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the vehicle control method according to any one of claims 1 to 7 is implemented.

10. A vehicle, characterized in that: Comprising the vehicle-mounted terminal as claimed in claim 9.

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