Method, system, electronic device and storage medium for intelligent insulation of electric vehicle

Abstract

The present invention relates to a method, system, electronic device and storage medium for intelligent heat preservation of an electric vehicle. The heat preservation strategy of a vehicle in two states, namely, plug-in charging and non-plug-in charging, is determined based on user settings, default settings or user driving habit data. The heat preservation strategy includes: a heat preservation mode entry condition, a heat preservation discharge strategy and a heat preservation mode exit condition. The heat preservation mode is started and stopped respectively when the heat preservation mode entry condition and the heat preservation mode exit condition are met, and the vehicle is discharged and kept warm based on the heat preservation discharge strategy and whether the vehicle is in a plug-in charging state. By setting the heat preservation mode entry condition, the heat preservation discharge strategy and the heat preservation mode exit condition, different heat preservation strategies are determined to be used for automatic heat preservation according to whether the vehicle is in a plug-in charging state when the heat preservation mode entry condition is met, and the heat preservation mode is automatically exited when the heat preservation exit condition is met, so that the discharge performance of the battery is improved when the user uses the vehicle next time, and the user's vehicle experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a method, system, electronic equipment and storage medium for intelligent heat preservation of an electric vehicle. Background Art

[0002] The charging and discharging performance of new energy electric vehicles depends on the working temperature of the battery. In cold seasons, when the ambient temperature is low, too low an ambient temperature will have a fatal impact on the life and power of the battery. If a battery with a capacity of 3500mAh works in an environment of -10℃, the power will decay sharply to 500mAh after less than 100 charge and discharge cycles, indicating that low temperature greatly shortens the life of the battery. Batteries account for a large part of the cost structure of electric vehicles. If the battery life is too short and needs to be replaced, it will greatly increase the cost of using the vehicle, thereby completely losing the advantage of low cost of using electric vehicles.

[0003] In addition, low temperatures also pose challenges to the motor system. At low temperatures, the battery will prevent the motor from starting. After the user parks the car at night, the battery temperature drops after a night of low temperature. When the user uses the car the next day, the low temperature will limit the battery's discharge performance, thus affecting the customer's car experience. The current existing solutions require the user to heat the battery while using the car, but this method takes about half an hour, affecting the user's car experience. Summary of the invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a method, system, electronic device and storage medium for intelligent heat preservation of electric vehicles. It takes a long time for users to heat the battery when using the car, which affects the user's car experience.

[0005] According to a first aspect of the present invention, a method for intelligent heat preservation of an electric vehicle is provided, comprising:

[0006] Step 1, determining a heat preservation strategy for a vehicle in two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the heat preservation strategy includes: a heat preservation mode entry condition, a heat preservation discharge strategy and a heat preservation mode exit condition;

[0007] Step 2, when the warm-keeping mode entry condition and the warm-keeping mode exit condition are met, the warm-keeping mode is started and stopped respectively, and the vehicle is discharged and kept warm based on the warm-keeping discharge strategy and whether the vehicle is in a plug-in charging state.

[0008] Based on the above technical solution, the present invention can also make the following improvements.

[0009] Optionally, the heat preservation discharge strategy includes: continuous discharge power and instantaneous discharge power.

[0010] Optionally, when the vehicle is in a plug-in charging state, the conditions for entering the insulation mode include: charging is completed without disconnecting the plug, each actuator has no faults, the ambient temperature does not exceed the first set temperature, and the thermal management mode is 0;

[0011] When the vehicle is in a non-plugged charging state, the conditions for entering the insulation mode include: static vehicle state, no faults in the actuators, the ambient temperature does not exceed the second set temperature, the thermal management mode is 0, and the power reaches the first set ratio.

[0012] Optionally, when the vehicle is in a plugged-in charging state or a non-plugged-in charging state, the conditions for exiting the insulation mode include: the power level is lower than a second set ratio, any actuator is faulty, the user needs to use the vehicle in advance or actively interrupts, the user's vehicle usage time is exceeded, and the heating target temperature is exceeded.

[0013] Optionally, in step 1, determining the heat preservation strategy when the vehicle is in two states of plug-in charging and non-plug-in charging based on the user driving habit data includes:

[0014] The user's set usage time habits and the user's driving distance and driving habits each time the car is used are recorded to obtain the user's driving habit data, the user's driving habit data including: driving distance pattern, driving time pattern, driving discharge pattern and ambient temperature, and the minimum temperature in the insulation mode entry condition and the instantaneous discharge power and continuous discharge power in the insulation discharge strategy are determined according to the user's driving habit data.

[0015] Optionally, when the vehicle is in a plug-in charging state and a non-plug-in charging state, the heat preservation discharge strategy includes:

[0016] The continuous current in the early stage of insulation is 1-2A;

[0017] The time to start heating the battery is calculated as: T0 - (Theating target - Tenvironment) / (average battery heating rate); T0 is the time the user uses the vehicle, Theating target is the heating target temperature, and Tenvironment is the ambient temperature;

[0018] The process of determining the T heating target includes: determining the maximum temperature at which the continuous discharge power is ≥45kw and the 10s instantaneous discharge power is ≥100kw according to the current SOC, and determining the T heating target as the sum of the maximum temperature and the preset buffer temperature.

[0019] Optionally, the step 1 includes:

[0020] The vehicle's central control screen displays to the user whether to use the insulation mode and the page for setting the user's vehicle usage time, and accepts the user's selection of whether to use the insulation mode and the set user's vehicle usage time.

[0021] According to a second aspect of the present invention, there is provided a system for intelligent heat preservation of an electric vehicle, comprising: a vehicle central control screen, a heat preservation strategy determination module and a heat preservation module;

[0022] The vehicle central control screen is used to display to the user whether to use the heat preservation mode and set the user's vehicle use time page, and accept the user's selection of whether to use the heat preservation mode and the user's vehicle use time information;

[0023] The heat preservation strategy determination module is used to determine the heat preservation strategy of the vehicle in the two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the heat preservation strategy includes: heat preservation mode entry conditions, heat preservation discharge strategy and heat preservation mode exit conditions;

[0024] The insulation module is used to start and stop the insulation mode respectively when the insulation mode entry condition and the insulation mode exit condition are met, and discharge and keep the vehicle warm based on the insulation discharge strategy and whether the vehicle is in a plug-in charging state.

[0025] According to a third aspect of the present invention, there is provided an electronic device comprising a memory and a processor, wherein the processor is used to implement the steps of a method for intelligent heat preservation of an electric vehicle when executing a computer management program stored in the memory.

[0026] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, on which a computer management program is stored, and when the computer management program is executed by a processor, the steps of the method for intelligent insulation of an electric vehicle are implemented.

[0027] The present invention provides a method, system, electronic device and storage medium for intelligent heat preservation of electric vehicles. By setting the conditions for entering the heat preservation mode, the heat preservation discharge strategy and the conditions for exiting the heat preservation mode, the intelligent heat preservation of the vehicle is realized. When the conditions for entering the heat preservation mode are met, different heat preservation strategies are used for automatic heat preservation according to whether the vehicle is in the plug-in charging state, and the heat preservation mode is automatically exited when the heat preservation exit conditions are met. The user can set the vehicle use time to ensure that the heat preservation is carried out in advance, which can ensure that the vehicle has been heated to a suitable temperature at the set vehicle use time, without waiting time, and improve the user's vehicle experience; it mainly solves the problem of improving the discharge performance of the battery and improving the user's vehicle experience when the user completes charging or stops the vehicle in a low temperature environment; the corresponding heat preservation strategy can be adjusted according to the user's usage habits, which is more energy-saving and intelligent to improve the user's driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A flow chart of a method for intelligent heat preservation of an electric vehicle provided by the present invention;

[0029] Figure 2 A flowchart of an embodiment of a method for intelligent heat preservation of an electric vehicle provided by the present invention;

[0030] Figure 3 A structural block diagram of an electric vehicle intelligent heat preservation system provided by the present invention;

[0031] Figure 4 A schematic diagram of the hardware structure of a possible electronic device provided by the present invention;

[0032] Figure 5 A schematic diagram of the hardware structure of a possible computer-readable storage medium provided by the present invention. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Figure 1 A flow chart of a method for intelligent heat preservation of an electric vehicle provided by the present invention, such as Figure 1 As shown, the intelligent heat preservation method includes:

[0035] Step 1: Determine the insulation strategy for the vehicle in the two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the insulation strategy includes: insulation mode entry conditions, insulation discharge strategy and insulation mode exit conditions.

[0036] Step 2, when the entry condition of the insulation mode and the exit condition of the insulation mode are met, the insulation mode is started and stopped respectively, and the vehicle is discharged and kept warm based on the insulation discharge strategy and whether the vehicle is in the plug-in charging state.

[0037] The present invention provides a method for intelligent heat preservation of electric vehicles. By setting the heat preservation mode entry conditions, heat preservation discharge strategy and heat preservation mode exit conditions, the vehicle's intelligent heat preservation is realized. When the heat preservation mode entry conditions are met, different heat preservation strategies are used for automatic heat preservation according to whether the vehicle is in the plug-in charging state, and the heat preservation mode is automatically exited when the heat preservation exit conditions are met. The user can set the vehicle use time to ensure that the heat preservation is carried out in advance, which can ensure that the vehicle has been heated to a suitable temperature at the set vehicle use time, without waiting time, and improve the user's vehicle experience; it mainly solves the problem of improving the discharge performance of the battery and improving the user's vehicle experience when the user completes charging or stops the vehicle in a low temperature environment; the corresponding heat preservation strategy can be adjusted according to the user's usage habits, which is more energy-saving and intelligent to improve the user's driving experience.

[0038] Example 1

[0039] Embodiment 1 provided by the present invention is an embodiment of a method for intelligent heat preservation of an electric vehicle provided by the present invention, such as Figure 2 The flowchart of an embodiment of the method for intelligent heat preservation of electric vehicles provided by the present invention is shown in FIG. Figure 1 and Figure 2 It can be seen that the embodiment of the intelligent heat preservation method includes:

[0040] The vehicle's central control screen displays to the user whether to use the insulation mode and the page for setting the user's vehicle usage time, and accepts the user's selection of whether to use the insulation mode and the set user's vehicle usage time.

[0041] In specific implementation, the intelligent insulation mode is built into the menu bar of the central control screen and is actively selected by the user. After selection, a pop-up window should pop up to remind the user that "energy consumption increases and performance improves."

[0042] The intelligent insulation mode requires the instrument to turn on the status light, and the central control supports user selection: on / off / default value.

[0043] Afterwards, users can freely set the time they use the car. The central control screen can support 0-24 time selection, which can be accurate to 0.5 hours or minutes.

[0044] Step 1: Determine the insulation strategy for the vehicle in the two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the insulation strategy includes: insulation mode entry conditions, insulation discharge strategy and insulation mode exit conditions.

[0045] In a specific implementation, the user can select the specific user's car usage time or the user can select the intelligent insulation mode. If the user selects the intelligent insulation mode but does not select the specific user's car usage time, the user's car usage time set by default in the system can be used for calculation.

[0046] In a possible implementation manner, the heat preservation discharge strategy includes: continuous discharge power and instantaneous discharge power.

[0047] In a possible embodiment, the conditions for entering the insulation mode when the vehicle is in the plug-in charging state include: charging is completed without disconnecting the plug, each actuator has no faults, the ambient temperature does not exceed the first set temperature, and the thermal management mode is 0.

[0048] In a specific implementation, the first set temperature can be -20°C, and the ambient temperature is above -20°C. When fully charged, it can meet the user's driving speed of 120km / h and a certain acceleration performance.

[0049] When the vehicle is in a non-plugged charging state, the conditions for entering the insulation mode include: static vehicle state, no faults in the actuators, the ambient temperature does not exceed the second set temperature, the thermal management mode is 0, and the power reaches the first set ratio.

[0050] In a specific implementation, the second set temperature is greater than the first set temperature, and the second set temperature may be -10°C. When the ambient temperature is above -10°C and the battery power is 60%, the user can drive at 120km / h and have a certain acceleration performance.

[0051] The first set ratio may be set to 60%.

[0052] In a possible embodiment, the exit conditions of the insulation mode when the vehicle is in the plugged-in charging state and the non-plugged-in charging state include: the power level is lower than the second set ratio, any actuator is faulty, the user needs to use the vehicle in advance or actively interrupts, the user's vehicle usage time is exceeded and the heating target temperature is exceeded.

[0053] Specifically, the second set ratio may be 50%, and the maximum SOC for heating is about 10%.

[0054] In specific implementation, a buffer time BUFFER can be added to the user's car usage time. The buffer time BUFFER can increase the heating target temperature by 5°C, which can leave a certain amount of time for the user to prepare for departure.

[0055] In a possible embodiment, the heat preservation strategy for determining the vehicle in two states of plug-in charging and non-plug-in charging based on the user driving habit data in step 1 includes:

[0056] The user's set usage time habits and the user's driving distance and driving habits each time the car is used are recorded to obtain the user's driving habit data. The user's driving habit data includes: driving distance pattern, driving time pattern, discharge pattern during driving, ambient temperature and other key data. The minimum temperature in the insulation mode entry condition and the instantaneous discharge power and continuous discharge power in the insulation discharge strategy are determined based on the user's driving habit data.

[0057] In the specific implementation, the vehicle controller (VCU) first records the user's habits of setting usage time, as well as the distance traveled each time the user uses the vehicle, driving habits, and obtains key data such as driving distance, driving time, discharge patterns during driving, and ambient temperature. When the user selects the smart mode, it provides the user with more accurate services based on the analysis of previous user driving habits and other data. For example: when analyzing the user's driving habits, it is found that the user often uses the smart insulation function when the ambient temperature is below -10°C, and the set usage time is Monday to Friday, 7 am and 6 pm. Most of the time the car is used is 40 minutes, the driving distance is 20 kilometers, the average discharge power during driving is 20KW, and the instantaneous discharge power is 80KW. Then, when the user selects the smart mode under the smart insulation function, the program will adjust the ambient temperature of the smart insulation mode according to the user habit data obtained above. The temperature changes from -20°C in the above figure to -15°C, and the heating target changes from continuous discharge power ≥45KW and instantaneous discharge power ≥120kw in the above figure to continuous discharge power ≥20KW and instantaneous discharge power ≥80KW, thereby adjusting the corresponding insulation strategy according to the user's usage habits, which is more energy-saving and intelligent to improve the driving experience for users.

[0058] In a possible embodiment, the heat preservation discharge strategy when the vehicle is in the plug-in charging state and the non-plug-in charging state includes:

[0059] The initial continuous current of the insulation is 1-2A. This initial continuous current is the minimum current to maintain wake-up and reduce the energy consumption of the entire insulation.

[0060] The time to start heating the battery is calculated as: T0-(Theating target-Tenvironment) / (battery average heating rate); T0 is the time the user uses the vehicle, Theating target is the heating target temperature, and Tenvironment is the ambient temperature; an embodiment of the battery average heating rate may be 0.5°C / min.

[0061] The process of determining the T heating target includes: determining the maximum temperature at which the continuous discharge power is ≥45kw and the 10s instantaneous discharge power is ≥100kw according to the current SOC, and determining the T heating target as the sum of the maximum temperature and the preset buffer temperature.

[0062] The continuous discharge power ≥45kw is used to ensure the user's 120km / h driving power demand, and the 10s instantaneous discharge power ≥100kw is used to ensure the user's certain 100km / h acceleration performance. The preset buffer temperature can be 5℃, and the preset buffer temperature buffer is heated for a while longer to give the user a certain amount of time to prepare for departure.

[0063] Step 2, when the entry condition of the insulation mode and the exit condition of the insulation mode are met, the insulation mode is started and stopped respectively, and the vehicle is discharged and kept warm based on the insulation discharge strategy and whether the vehicle is in the plug-in charging state.

[0064] Example 2

[0065] Embodiment 2 provided by the present invention is an embodiment of an electric vehicle intelligent heat preservation system provided by the present invention. Figure 3 A system structure diagram of an electric vehicle intelligent insulation provided by an embodiment of the present invention, combined with Figure 3 It can be seen that this embodiment includes: a vehicle control screen, a heat preservation strategy determination module and a heat preservation module.

[0066] The vehicle control screen is used to display to the user whether to use the insulation mode and to set the user's vehicle use time, and to accept the user's selection of whether to use the insulation mode and the set user's vehicle use time.

[0067] In specific implementation, the intelligent insulation mode is built into the menu bar of the central control screen and is actively selected by the user. After selection, a pop-up window should pop up to remind the user that "energy consumption increases and performance improves."

[0068] The intelligent insulation mode requires the instrument to turn on the status light, and the central control supports user selection: on / off / default value.

[0069] Afterwards, users can freely set the time they use the car. The central control screen can support 0-24 time selection, which can be accurate to 0.5 hours or minutes.

[0070] A heat preservation strategy determination module is used to determine the heat preservation strategy of the vehicle in the two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the heat preservation strategy includes: heat preservation mode entry conditions, heat preservation discharge strategy and heat preservation mode exit conditions;

[0071] In a specific implementation, the user can select the specific user's car usage time or the user can select the intelligent insulation mode. If the user selects the intelligent insulation mode but does not select the specific user's car usage time, the user's car usage time set by default in the system can be used for calculation.

[0072] In a possible implementation manner, the heat preservation discharge strategy includes: continuous discharge power and instantaneous discharge power.

[0073] In a possible embodiment, the conditions for entering the insulation mode when the vehicle is in the plug-in charging state include: charging is completed without disconnecting the plug, each actuator has no faults, the ambient temperature does not exceed the first set temperature, and the thermal management mode is 0.

[0074] In a specific implementation, the first set temperature can be -20°C, and the ambient temperature is above -20°C. When fully charged, it can meet the user's driving speed of 120km / h and a certain acceleration performance.

[0075] When the vehicle is in a non-plugged charging state, the conditions for entering the insulation mode include: static vehicle state, no faults in the actuators, the ambient temperature does not exceed the second set temperature, the thermal management mode is 0, and the power reaches the first set ratio.

[0076] In a specific implementation, the second set temperature is greater than the first set temperature, and the second set temperature may be -10°C. When the ambient temperature is above -10°C and the battery power is 60%, the user can drive at 120km / h and have a certain acceleration performance.

[0077] The first set ratio may be set to 60%.

[0078] In a possible embodiment, the exit conditions of the insulation mode when the vehicle is in the plugged-in charging state and the non-plugged-in charging state include: the power level is lower than the second set ratio, any actuator is faulty, the user needs to use the vehicle in advance or actively interrupts, the user's vehicle usage time is exceeded and the heating target temperature is exceeded.

[0079] Specifically, the second set ratio may be 50%, and the maximum SOC for heating is about 10%.

[0080] In specific implementation, a buffer time BUFFER can be added to the user's car usage time. The buffer time BUFFER can increase the heating target temperature by 5°C, which can leave a certain amount of time for the user to prepare for departure.

[0081] In a possible embodiment, the heat preservation strategy for determining the vehicle in two states of plug-in charging and non-plug-in charging based on the user driving habit data in step 1 includes:

[0082] The user's set usage time habits and the user's driving distance and driving habits each time the car is used are recorded to obtain the user's driving habit data. The user's driving habit data includes: driving distance pattern, driving time pattern, discharge pattern during driving, ambient temperature and other key data. The minimum temperature in the insulation mode entry condition and the instantaneous discharge power and continuous discharge power in the insulation discharge strategy are determined based on the user's driving habit data.

[0083] In the specific implementation, the vehicle controller (VCU) first records the user's habits of setting usage time, as well as the distance traveled each time the user uses the vehicle, driving habits, and obtains key data such as driving distance, driving time, discharge patterns during driving, and ambient temperature. When the user selects the smart mode, it provides the user with more accurate services based on the analysis of previous user driving habits and other data. For example: when analyzing the user's driving habits, it is found that the user often uses the smart insulation function when the ambient temperature is below -10℃, and the set usage time is Monday to Friday, 7 am and 6 pm. Most of the time the car is used is 40 minutes, the driving distance is 20 kilometers, the average discharge power during driving is 20KW, and the instantaneous discharge power is 80KW. Then, when the user selects the smart mode under the smart insulation function, the program will adjust the ambient temperature of the smart insulation mode according to the user habit data obtained above, and the ambient temperature of this function will be changed from -20℃ in the above figure to -15℃, and the heating target will be changed from continuous discharge power ≥45KW and instantaneous discharge power ≥100kw in the above figure to continuous discharge power ≥20KW and instantaneous discharge power ≥80KW, so as to adjust the corresponding insulation strategy according to the user's usage habits, which is more energy-saving and intelligent to improve the driving experience for users.

[0084] In a possible embodiment, the heat preservation discharge strategy when the vehicle is in the plug-in charging state and the non-plug-in charging state includes:

[0085] The initial continuous current of the insulation is 1-2A. This initial continuous current is the minimum current to maintain wake-up and reduce the energy consumption of the entire insulation.

[0086] The time to start heating the battery is calculated as: T0-(Theating target-Tenvironment) / (battery average heating rate); T0 is the time the user uses the vehicle, Theating target is the heating target temperature, and Tenvironment is the ambient temperature; an embodiment of the battery average heating rate may be 0.5°C / min.

[0087] The process of determining the T heating target includes: determining the maximum temperature at which the continuous discharge power is ≥45kw and the 10s instantaneous discharge power is ≥100kw according to the current SOC, and determining the T heating target as the sum of the maximum temperature and the preset buffer temperature.

[0088] The continuous discharge power ≥45kw is used to ensure the user's 120km / h driving power demand, and the 10s instantaneous discharge power ≥100kw is used to ensure the user's certain 100km / h acceleration performance. The preset buffer temperature can be 5℃, and the preset buffer temperature buffer is heated for a while longer to give the user a certain amount of time to prepare for departure.

[0089] The insulation module is used to start and stop the insulation mode when the insulation mode entry conditions and insulation mode exit conditions are met, and discharge and keep the vehicle warm based on the insulation discharge strategy and whether the vehicle is in the plug-in charging state.

[0090] See also Figure 4 , Figure 4 Schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 4 As shown, an embodiment of the present invention provides an electronic device, including a memory 1310, a processor 1320, and a computer program 1311 stored in the memory 1310 and executable on the processor 1320. When the processor 1320 executes the computer program 1311, the following steps are implemented: based on user settings, default settings, or user driving habit data, a heat preservation strategy is determined when the vehicle is in two states of plug-in charging and non-plug-in charging; the heat preservation strategy includes: a heat preservation mode entry condition, a heat preservation discharge strategy, and a heat preservation mode exit condition; the heat preservation mode is started and stopped respectively when the heat preservation mode entry condition and the heat preservation mode exit condition are met, and the vehicle is discharged and kept warm based on the heat preservation discharge strategy and whether the vehicle is in a plug-in charging state.

[0091] See also Figure 5 , Figure 5 Schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention. Figure 5 As shown, the present embodiment provides a computer-readable storage medium 1400 on which a computer program 1411 is stored. When the computer program 1411 is executed by a processor, the following steps are implemented: determining a heat preservation strategy for a vehicle in two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the heat preservation strategy includes: a heat preservation mode entry condition, a heat preservation discharge strategy and a heat preservation mode exit condition; starting and stopping the heat preservation mode respectively when the heat preservation mode entry condition and the heat preservation mode exit condition are met, and discharging and keeping warm the vehicle based on the heat preservation discharge strategy and whether the vehicle is in a plug-in charging state.

[0092] The embodiment of the present invention provides a method, system, electronic device and storage medium for intelligent heat preservation of electric vehicles. By setting the conditions for entering the heat preservation mode, the heat preservation discharge strategy and the conditions for exiting the heat preservation mode, the intelligent heat preservation of the vehicle is realized. When the conditions for entering the heat preservation mode are met, different heat preservation strategies are used for automatic heat preservation according to whether the vehicle is in the plug-in charging state, and the heat preservation mode is automatically exited when the heat preservation exit conditions are met. The user can set the vehicle use time to ensure that the heat preservation is carried out in advance, which can ensure that the vehicle has been heated to a suitable temperature at the set vehicle use time, without waiting time, and improve the user's car experience; it mainly solves the problem of improving the discharge performance of the battery and the user's car experience when the user completes charging or stops the vehicle in a low temperature environment; the corresponding heat preservation strategy can be adjusted according to the user's usage habits, which is more energy-saving and intelligent to improve the user's driving experience.

[0093] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0095] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks 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 generate 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.

[0096] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate 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 A function specified in one or more boxes.

[0097] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0098] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. 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 the present invention.

[0099] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for intelligent heat preservation of electric vehicles, It is characterized in that The intelligent heat preservation method comprises: Step 1, determining a heat preservation strategy for a vehicle in two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the heat preservation strategy includes: a heat preservation mode entry condition, a heat preservation discharge strategy and a heat preservation mode exit condition; Step 2, when the warm-keeping mode entry condition and the warm-keeping mode exit condition are met, the warm-keeping mode is started and stopped respectively, and the vehicle is discharged and kept warm based on the warm-keeping discharge strategy and whether the vehicle is in a plug-in charging state; In step 1, the heat preservation strategy for determining the vehicle in two states of plug-in charging and non-plug-in charging based on the user driving habit data includes: Recording the user's set usage time habits and the user's driving distance and driving habits each time the vehicle is used, obtaining the user's driving habit data, the user's driving habit data including: driving distance regularity, driving time regularity, driving discharge regularity and ambient temperature, and determining the minimum temperature in the heat preservation mode entry condition and the instantaneous discharge power and continuous discharge power in the heat preservation discharge strategy according to the user's driving habit data; When the vehicle is in the plug-in charging state and the non-plug-in charging state, the heat preservation discharge strategy includes: The continuous current in the early stage of insulation is 1-2A; The time to start heating the battery is calculated as: T0 - (Theating target - Tenvironment) / (average battery heating rate); T0 is the time the user uses the vehicle, Theating target is the heating target temperature, and Tenvironment is the ambient temperature; The process of determining the T heating target includes: determining the maximum temperature at which the continuous discharge power is ≥45kw and the 10s instantaneous discharge power is ≥100kw according to the current SOC, and determining the T heating target as the sum of the maximum temperature and the preset buffer temperature.

2. The intelligent heat preservation method according to claim 1, It is characterized in that When the vehicle is in the state of plugging in the charging gun, the conditions for entering the heat preservation mode include: charging is completed without disconnecting the charging gun, each actuator has no faults, and the ambient temperature does not exceed the first set temperature; When the vehicle is in a non-plugged charging state, the conditions for entering the insulation mode include: the vehicle is in a stationary state, each actuator has no faults, the ambient temperature does not exceed the second set temperature, and the power reaches the first set ratio.

3. The intelligent heat preservation method according to claim 2, It is characterized in that When the vehicle is in the plugged-in charging state and the non-plugged-in charging state, the conditions for exiting the insulation mode include: the power level is lower than the second set ratio, any actuator is faulty, the user needs to use the vehicle in advance or actively interrupts, the user's vehicle usage time is exceeded and the heating target temperature is exceeded.

4. The intelligent heat preservation method according to claim 1, It is characterized in that The step 1 includes: The vehicle's central control screen displays to the user whether to use the insulation mode and the page for setting the user's vehicle usage time, and accepts the user's selection of whether to use the insulation mode and the set user's vehicle usage time.

5. A system for intelligent insulation of electric vehicles based on the method for intelligent insulation of electric vehicles as claimed in any one of claims 1 to 4, It is characterized in that The intelligent heat preservation system comprises: a vehicle central control screen, a heat preservation strategy determination module and a heat preservation module; The vehicle central control screen is used to display to the user whether to use the heat preservation mode and set the user's vehicle use time page, and accept the user's selection of whether to use the heat preservation mode and the user's vehicle use time information; The heat preservation strategy determination module is used to determine the heat preservation strategy of the vehicle in the two states of plug-in charging and non-plug-in charging based on user settings, default settings or user driving habit data; the heat preservation strategy includes: heat preservation mode entry conditions, heat preservation discharge strategy and heat preservation mode exit conditions; The insulation module is used to start and stop the insulation mode respectively when the insulation mode entry condition and the insulation mode exit condition are met, and discharge and keep the vehicle warm based on the insulation discharge strategy and whether the vehicle is in a plug-in charging state.

6. An electronic device, It is characterized in that The method comprises a memory and a processor, wherein the processor is used to implement the steps of the method for intelligent heat preservation of an electric vehicle as described in any one of claims 1 to 4 when executing a computer program stored in the memory.

7. A computer-readable storage medium, It is characterized in that A computer program is stored thereon, and when the computer program is executed by a processor, the steps of the method for intelligent insulation of an electric vehicle as described in any one of claims 1 to 4 are implemented.

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