Electric vehicle power management method and device, storage medium and program product

Abstract

The application relates to an electric vehicle power management method, which is executed by a control system of an electric vehicle, the electric vehicle is provided with a solar panel, a main battery and a backup battery, and the method comprises the following steps: controlling the solar panel to obtain power and charge the backup battery; when the electric vehicle is in a power-off state, starting the backup battery to control the electric vehicle to enter a power-on state in response to receiving a first instruction sent by a vehicle control application; the vehicle control application is an application with the capability of controlling the electric vehicle; when the electric vehicle is in the power-on state, controlling a specified power-consuming device to execute a function corresponding to a second instruction corresponding to the specified power-consuming device in response to receiving the second instruction sent by the vehicle control application. The above scheme can improve the power management efficiency of the electric vehicle and improve the safety of the electric vehicle.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of new energy vehicles, and in particular to an electric vehicle electric energy management method and device, a storage medium and a program product. BACKGROUND

[0002] With the rapid development of the new energy industry, new energy vehicles have emerged. New energy vehicles mainly rely on electric energy to maintain vehicle operation. Therefore, the management of electric energy for electric vehicles is very important.

[0003] In related technologies, an electric vehicle has a battery inside for powering the electric vehicle to maintain normal operation of the electric vehicle. When the battery is out of power, the battery can be charged through an external charging gun. When the electric vehicle is in a powered-on state, the built-in car system is turned on, and the user can control various accessories in the vehicle based on the electric energy provided by the battery through the car system to achieve specified operations, such as controlling the lights inside the electric vehicle.

[0004] However, in the above scheme, the user's electric energy management method for the electric vehicle is relatively single, the management effect is poor, and safety hazards are likely to occur. SUMMARY

[0005] Embodiments of the present application provide an electric vehicle electric energy management method and device, a storage medium and a program product, which can improve the electric energy management efficiency of the electric vehicle and improve the safety of the electric vehicle. The technical solution is as follows:

[0006] On the one hand, an electric vehicle electric energy management method is provided. The method is executed by a control system of an electric vehicle. The electric vehicle is provided with a solar panel, a main battery and a backup battery. The main battery is used to power the driving system and various electric devices of the electric vehicle. The backup battery is used to store the electric energy collected by the solar panel and to power specified electric devices in the electric vehicle. The specified electric devices are all or part of the various electric devices. The capacity of the backup battery is less than that of the main battery. The backup battery and the main battery are isolated by a thermal insulation material. The method comprises:

[0007] controlling the solar panel to obtain electric energy and charge the backup battery;

[0008] when the electric vehicle is in a powered-off state, in response to receiving a first instruction sent by a vehicle control application, starting the backup battery to control the electric vehicle to enter a powered-on state. The vehicle control application is an application program that has the ability to control the electric vehicle.

[0009] In response to receiving a second instruction corresponding to the specified power-consuming device sent by the vehicle control application, the function execution module controls the specified power-consuming device to perform a function corresponding to the second instruction when the electric vehicle is in the powered-on state.

[0010] In another aspect, an electric vehicle power management device is provided, the device comprising:

[0011] A solar charging management module for controlling the solar panel to obtain electric power and charge the backup battery.

[0012] A backup battery starting module for starting the backup battery to control the electric vehicle to enter a powered-on state in response to receiving a first instruction sent by a vehicle control application when the electric vehicle is in a powered-off state; the vehicle control application is an application program having the ability to control the electric vehicle.

[0013] A function execution module for controlling the specified power-consuming device to perform a function corresponding to a second instruction sent by the vehicle control application in response to receiving the second instruction when the electric vehicle is in the powered-on state.

[0014] In some embodiments, the solar charging management module is configured to obtain longitude, latitude, and time information of the solar panel through a global positioning system of the electric vehicle.

[0015] Determine a solar declination angle based on the latitude and the time information.

[0016] Determine a time angle based on the longitude, the latitude, and the time information.

[0017] Determine a target angle of the solar panel based on the latitude, the solar declination angle, and the time angle through the following formula one:

[0018] Formula one:

[0019] wherein, represents the latitude, δ represents the solar declination angle, ω represents the time angle, and θ represents the target angle.

[0020] Control the solar panel to adjust according to the target angle to make the solar panel perpendicular to the sunlight to obtain solar energy.

[0021] Convert the solar energy into the electric power through the solar panel and charge the backup battery.

[0022] In some embodiments, the solar charging management module comprises:

[0023] a solar panel monitoring module configured to acquire output voltage, output current and environmental parameters of the solar panel through sensors of the electric vehicle;

[0024] a panel adjusting module configured to adjust orientation of the solar panel based on the output voltage, the output current and the environmental parameters of the solar panel through an MPPT algorithm.

[0025] In some embodiments, the total capacity of the backup battery is less than 2 degrees of electricity;

[0026] limiting power supply of the backup battery to the designated power consuming device when the proportion of the backup battery power to the total capacity is lower than a first proportion threshold.

[0027] In some embodiments, the apparatus further comprises:

[0028] a power supply stopping module configured to stop the backup battery from supplying power to non-essential power consuming devices among the designated power consuming devices when the proportion of the backup battery power to the total capacity is lower than a second proportion threshold; the second proportion threshold is lower than the first proportion threshold.

[0029] In some embodiments, the apparatus further comprises:

[0030] a charging stopping module configured to stop the solar panel from charging the backup battery when it is monitored that charging current and / or charging voltage of the backup battery by the solar panel exceeds a safe range.

[0031] In another aspect, a computer device is provided, which comprises a processor and a memory, the memory having stored therein at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program, the code set or the instruction set being loaded and executed by the processor to implement the electric vehicle power management method as described above.

[0032] In another aspect, a computer readable storage medium is provided, the storage medium having stored therein at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program, the code set or the instruction set being loaded and executed by a processor to implement the electric vehicle power management method as described above.

[0033] In still another aspect, a computer program product is provided, which includes a computer program stored in a computer readable storage medium. A processor of a computer device reads the computer program from the computer readable storage medium, and the processor executes the computer program to cause the computer device to perform the electric vehicle power management method provided in the various optional implementation manners above.

[0034] The technical solutions provided in the application can have the following beneficial effects.

[0035] The backup battery is charged when the solar panel obtains electric energy, and is physically isolated from the main battery. When the electric vehicle is in a powered-off state, the control system of the electric vehicle starts the backup battery through a first instruction sent by a vehicle control application, so that the electric vehicle enters a powered-on state, which facilitates rapid recovery of the operating ability of the electric vehicle in an emergency, and provides an additional protection mechanism for the electric vehicle. Specifically, after the vehicle is powered off, the user can remotely start the backup battery with small electric quantity to ensure the normal work of the electric device of the vehicle. Since the capacity of the backup battery is small and the backup battery is isolated from the main battery by the heat insulation material, even if the backup battery loses control during use, the influence range can be controlled, the safety can be ensured, and thus the overall reliability and safety of the electric vehicle are effectively improved.

[0036] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0038] Figure 1 is a system block diagram of an electric vehicle power management method according to an embodiment of the application;

[0039] Figure 2 is a flowchart of an electric vehicle power management method according to an embodiment of the application;

[0040] Figure 3 is a flowchart of an electric vehicle power management method according to an embodiment of the application;

[0041] Figure 4 is a system function diagram of a solar-based electric vehicle power conversion mechanism according to an embodiment of the application;

[0042] Figure 5 is a work flow diagram of a solar-based electric vehicle power conversion mechanism according to an embodiment of the application;

[0043] Figure 6is a block diagram of an electric vehicle power management device according to an example embodiment of the present application;

[0044] Figure 7 is a structural schematic diagram of a computer device according to an example embodiment of the present application. DETAILED DESCRIPTION

[0045] The example embodiments will be described in detail herein with reference to the drawings. When the description is made with reference to the drawings, the same or similar components are designated with the same or similar reference numerals throughout the several views, unless otherwise specified. The implementations described in the following example embodiments are not meant to represent all implementations consistent with the present application.

[0046] Rather, they are examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

[0047] Figure 1 is a system configuration diagram of an electric vehicle power management method according to an example embodiment of the present application. As shown in Figure 1 , the electric vehicle 100 can be wirelessly connected to a vehicle control application 110, which is an application having the ability to control the electric vehicle 100; the electric vehicle 100 comprises a control system 101 and a drive system 102; the electric vehicle 100 is provided with a solar panel 100a, a main battery 100b, a backup battery 100c, and designated electrical devices 100d; the main battery 100b is used to power the drive system 102 of the electric vehicle 100 and various electrical devices; the capacity of the backup battery 100c is less than that of the main battery 100b; the backup battery 100c and the main battery 100b are isolated by a thermal insulation material; the backup battery 100c is used to store the electrical energy collected by the solar panel 100a and to power the designated electrical devices 100d in the electric vehicle 100, which are all or part of the various electrical devices.

[0048] As shown in Figure 1 , the control system 101 of the electric vehicle 100 can control the solar panel 100a to obtain electrical energy and charge the backup battery 100c; when the electric vehicle 100 is in a powered-off state, the control system 101 starts the backup battery 100c in response to receiving a first instruction sent by the vehicle control application 110, to control the electric vehicle 100 to enter a powered-on state; when the electric vehicle 100 is in a powered-on state, the control system 101 controls the designated electrical devices 100d to perform a function corresponding to a second instruction corresponding to the designated electrical devices 100d in response to receiving the second instruction sent by the vehicle control application 110.

[0049] For example, as shown in Figure 2 ,Figure 2 is a flowchart of an electric vehicle power management method provided by an embodiment of the present application. Figure 2 The electric vehicle power management method shown in the figure can be executed by a control system of an electric vehicle, for example, the electric vehicle can be the electric vehicle 100 described above. Figure 1 The electric vehicle 100 shown in the figure, the control system can be the control system 101 shown in the figure. Figure 1 The control system 101 shown in the figure.

[0050] In an embodiment of the present application, the electric vehicle is provided with a solar panel, a main battery and a backup battery, the main battery is used to power the driving system and various electrical devices of the electric vehicle; the backup battery is used to store the electrical energy collected by the solar panel, and is used to power the designated electrical devices in the electric vehicle, the designated electrical devices are all or part of the electrical devices; the capacity of the backup battery is less than that of the main battery; the backup battery and the main battery are isolated by thermal insulation material.

[0051] Among them, the above-mentioned solar panel can be arranged on the top of the electric vehicle, and can convert sunlight into electrical energy through photovoltaic effect.

[0052] Among them, the above-mentioned main battery can provide electrical energy for the driving system of the electric vehicle.

[0053] Among them, the above-mentioned backup battery can store the electrical energy collected by the solar panel, and can supply power to the main battery or electrical devices of the electric vehicle when the main battery cannot meet the power demand of the electric vehicle.

[0054] Among them, the above-mentioned designated electrical device is an electrical device that can be powered by the backup battery alone.

[0055] Among them, the above-mentioned thermal insulation material can be a material with thermal insulation performance, which can block the heat transfer from one battery to another battery.

[0056] In an embodiment of the present application, the capacity of the backup battery is small, and the possibility and potential harm of the backup battery out of control are relatively low; the backup battery and the main battery are isolated by thermal insulation material, which can effectively prevent the heat transfer between the backup battery and the main battery, and ensure that the two batteries work in the best temperature range respectively, that is, even if one battery abnormally heats up, it will not affect the normal work of the other battery. For example, when the driver remotely starts the backup battery to power on, even if the backup battery has an accident such as thermal runaway, the influence is limited within the backup battery, and the main battery is not affected, avoiding larger range of energy out of control, and ensuring the safety of the electric vehicle.

[0057] As shown in the figure, Figure 2 The above-mentioned electric vehicle power management method can include steps 210, 220 and 230, and the specific implementation is as follows.

[0058] Step 210: Control the solar panel to obtain electric energy and charge the backup battery.

[0059] In the embodiment of the application, the control system of the electric vehicle controls the solar panel to face the sun at a specified angle, absorbs sunlight through the solar panel, and converts the current into direct current suitable for storage in the backup battery through the power electronic device built in the solar panel to charge the backup battery.

[0060] Step 220: In response to receiving a first instruction sent by a vehicle control application, start the backup battery to control the electric vehicle to enter a powered-on state when the electric vehicle is in a powered-off state. The vehicle control application is an application with the ability to control the electric vehicle.

[0061] The powered-off state refers to the main system (such as the control system) and components of the electric vehicle being in a closed or standby state. In some embodiments, the electric vehicle enters the powered-off state after the driver turns off the power of the electric vehicle.

[0062] The vehicle control application refers to a software application installed on a smart device (such as a smartphone, tablet computer, or smart watch) for remotely controlling and managing various functions of the electric vehicle. The vehicle control application can achieve control operations on the electric vehicle by communicating with the control system of the electric vehicle.

[0063] The first instruction is an instruction sent by the vehicle control application to the control system of the electric vehicle for starting the backup battery.

[0064] The powered-on state refers to the main system (such as the control system) and components of the electric vehicle being started or in a working state. The electric vehicle can perform driving operations or other functions in the powered-on state.

[0065] In the embodiment of the application, the user can send a first instruction to the control system of the electric vehicle through the vehicle control application on the smart device. After receiving the first instruction, the control system of the electric vehicle activates the backup battery management system of the electric vehicle according to the first instruction, manages the backup battery through the backup battery management system, and starts the backup battery through the backup battery management system to make the electric vehicle enter the powered-on state.

[0066] Step 230: In response to receiving a second instruction corresponding to a specified power-consuming device sent by the vehicle control application, control the specified power-consuming device to perform a function corresponding to the second instruction when the electric vehicle is in the powered-on state.

[0067] The second instruction is an operation instruction for a specified electrical device, for example, the specified electrical device can be a car air conditioner, and the second instruction can be to turn on the car air conditioner.

[0068] In the embodiments of the present application, the user can send a second instruction to the control system of the electric vehicle through the vehicle control application on the smart device, and the second instruction is sent to the control system of the electric vehicle through a wireless communication protocol. The control system controls the specified electrical device according to the second instruction.

[0069] In the embodiments of the present application, the backup battery is charged when the solar panel obtains electric energy, and is physically isolated from the main battery. When the electric vehicle is in a powered-off state, the control system of the electric vehicle starts the backup battery through the first instruction sent by the vehicle control application, so that the electric vehicle enters a powered-on state, which facilitates the rapid recovery of the operation ability of the electric vehicle in an emergency. In addition, the electric vehicle is provided with an additional protection mechanism. Specifically, after the vehicle is powered off, the user can remotely start the backup battery with small electric quantity to ensure the normal work of the electrical devices of the vehicle. Since the capacity of the backup battery is small and the backup battery is isolated from the main battery by a heat insulation material, even if the backup battery loses control during use, the influence range can be controlled to ensure safety, thereby effectively improving the overall reliability and safety of the electric vehicle.

[0070] Based on the scheme shown in any one or more of the above embodiments, in some embodiments, the step 210 can be implemented by acquiring the longitude, latitude and time information of the solar panel through the global positioning system of the electric vehicle; determining the solar declination angle based on the latitude and time information; determining the hour angle based on the longitude, latitude and time information; determining the target angle of the solar panel based on the latitude, solar declination angle and hour angle through the following formula one:

[0071] Formula one:

[0072] wherein, latitude, δ represents the solar declination angle, ω represents the hour angle, and θ represents the target angle.

[0073] The solar panel is adjusted according to the target angle to make the solar panel perpendicular to the sunlight to obtain solar energy; and the solar energy is converted into electric energy by the solar panel and is used to charge the backup battery.

[0074] The global positioning system is a satellite-based navigation system that can provide accurate position and time information.

[0075] In the embodiments of the present application, the global positioning system of the electric vehicle can acquire the longitude, latitude and time information of the solar panel.

[0076] In the embodiment of the present application, the control system of the electric vehicle receives signals from multiple satellites through the global positioning system, and uses the triangulation method to accurately calculate the real-time longitude and latitude of the solar panel.

[0077] In the embodiment of the present application, the above-mentioned solar declination angle is related to the date, which can be determined by time information, and based on the latitude, the solar declination angle can be calculated according to the time information (date) based on the regular formula for indicating that the solar direct point moves periodically between the tropics with the change of seasons.

[0078] In the embodiment of the present application, the control system of the electric vehicle can determine the local standard time according to the longitude, and the calculation method is to convert the actual observation time (time information) into the time difference relative to the local standard time by adding the longitude difference corresponding to the number of hours to UTC (Coordinated Universal Time). Finally, the hour angle is calculated by the specified formula.

[0079] In the embodiment of the present application, after the control system calculates the target angle according to formula one, the control system can control and adjust the orientation and inclination angle of the solar panel through the mechanical device of the electric vehicle, so that the solar panel moves to the target angle to maximize the absorption rate of the solar panel to sunlight.

[0080] In the embodiment of the present application, the control system uses the global positioning system to obtain the longitude, latitude and time information of the solar panel, and combines the latitude of the solar panel, the solar declination angle and the hour angle to calculate the target angle of the solar panel through formula one, dynamically adjusts the angle of the solar panel to adapt to the changes of different times and geographical positions, ensures that it can be perpendicular to the sunlight under various conditions, maximizes the absorption of light energy, efficiently converts solar energy into electric energy, and effectively improves the efficiency of electric energy acquisition. After obtaining electric energy, based on stable power supply, the risk of electric vehicle failure caused by insufficient power can be reduced, and the driving safety can be further improved.

[0081] Based on the scheme shown in any one or more of the above embodiments, in some embodiments, the control system of the electric vehicle obtains the output voltage, output current and environmental parameters of the solar panel through the sensors of the electric vehicle; based on the output voltage, output current and environmental parameters of the solar panel, the orientation of the solar panel is adjusted through the MPPT algorithm.

[0082] In the embodiments of the present application, a plurality of sensors can be arranged on the electric vehicle, including but not limited to voltage sensors, current sensors, and environmental sensors (such as temperature sensors, illumination intensity sensors). The voltage sensors are used to measure the output voltage of the solar panel, the current sensors are used to measure the output current of the solar panel, and the environmental sensors are used to collect the ambient temperature and illumination intensity of the environment in which the solar panel is located.

[0083] Among them, the above-mentioned MPPT (Maximum Power Point Tracking) is an optimization algorithm used to find the maximum power point that the solar panel can output under the current working condition.

[0084] In the embodiments of the present application, the control system inputs the output voltage, output current and environmental parameters of the solar panel obtained into the MPPT algorithm, and the MPPT algorithm calculates the optimal working point according to the output voltage, output current and environmental parameters provided by the sensors, and dynamically adjusts the orientation and inclination angle of the solar panel according to the calculation result.

[0085] In the embodiments of the present application, the control system monitors the output voltage, output current and environmental parameters of the solar panel in real time through the sensors, ensures that the control system can obtain accurate data of the current solar panel under the working state, and dynamically adjusts the orientation of the solar panel according to the MPPT algorithm based on the above-mentioned data, so that the solar panel can operate at maximum power under different illumination conditions, not only improving the efficiency of solar energy conversion into electrical energy, but also ensuring that the backup battery can obtain a more stable charging source and enhancing the power supply reliability of the backup battery.

[0086] Based on the scheme shown in any one or more of the above embodiments, in some embodiments, the total capacity of the backup battery of the electric vehicle is less than 2 degrees of electricity; when the proportion of the electric quantity of the backup battery to the total capacity is lower than a first proportion threshold, the power supply quantity of the backup battery to the specified electrical device is limited.

[0087] Among them, the total capacity of the above-mentioned backup battery refers to the maximum electric quantity that the backup battery can store, and 2 degrees of electricity is equivalent to 7.2 kilowatt hours.

[0088] Among them, the above-mentioned first proportion threshold is a pre-set safety limit, which can be set as a percentage of the remaining electric quantity of the backup battery (such as 20%).

[0089] In the embodiments of the present application, the control system can monitor the power of the backup battery of the electric vehicle in real time. When the power of the backup battery of the electric vehicle falls below the first proportion threshold, the control system automatically reduces or stops the backup battery from supplying power to the specified power-consuming device. The specified power-consuming device can be a non-critical power-consuming device, for example, the light inside the electric vehicle.

[0090] In the embodiments of the present application, the total capacity of the backup battery is limited to 2 degrees of electricity, which ensures that the backup battery has sufficient power reserves to deal with emergency situations. When the proportion of the power of the backup battery to the total capacity is lower than the first proportion threshold, the control system limits the power supply of the backup battery to the specified power-consuming device, ensuring that the critical system of the electric vehicle can obtain priority power supply, effectively preventing the risk of the electric vehicle losing basic functions due to excessive consumption of the backup battery, and effectively improving the power supply safety of the backup battery.

[0091] Based on the scheme shown in any one or more of the above embodiments, in some embodiments, when the proportion of the power of the backup battery to the total capacity is lower than the second proportion threshold, the control system of the electric vehicle stops the backup battery from supplying power to the non-essential power-consuming device in the specified power-consuming device; the second proportion threshold is lower than the first proportion threshold.

[0092] The second proportion threshold mentioned above refers to a safety limit lower than the first proportion threshold, for example, a threshold of 10% or lower than 10%.

[0093] The non-essential power-consuming device mentioned above can be an entertainment system or an air conditioner of the electric vehicle, and the like, which does not affect the running safety and basic operation of the electric vehicle.

[0094] The critical system mentioned above is a component that can maintain the driving safety of the electric vehicle, for example, the brake system, the steering assist system, and the instrument panel display of the electric vehicle.

[0095] In the embodiments of the present application, the control system can monitor the power of the backup battery in real time. When the power of the backup battery falls below the second proportion threshold, the control system automatically cuts off the power supply to the non-essential power-consuming device, to preferentially guarantee the basic driving function and the operation of the critical system of the electric vehicle.

[0096] The basic driving function mentioned above refers to the basic driving capability of the electric vehicle.

[0097] In some embodiments, before the estimated power is about to fall below the second proportion threshold, the control system can turn off part of the non-essential power-consuming device in advance, to prevent the risk of sudden power failure when the power of the backup battery falls below the second proportion threshold.

[0098] In the embodiment of the present application, when the power of the backup battery decreases to a second proportion threshold (lower than the first proportion threshold), the control system automatically stops the backup battery from supplying power to the non-essential electrical devices, and preferentially guarantees the basic driving function and the operation of the key system of the electric vehicle, which can effectively avoid the risk of the vehicle losing the basic function due to the depletion of the power of the backup battery, and ensure that the necessary operation and safety performance of the electric vehicle can still be maintained in an extreme case, and the power supply safety of the backup battery can be effectively improved through the hierarchical management. In the embodiment of the present application, the control system can automatically stop the backup battery from supplying power to the non-essential electrical devices when the power of the backup battery decreases to a second proportion threshold (lower than the first proportion threshold).

[0099] For example, based on the fact that the power of the backup battery is less than the second proportion threshold, the control system can automatically stop the backup battery from supplying power to the non-essential electrical devices. Figure 2 For example, the control system can automatically stop the backup battery from supplying power to the non-essential electrical devices when the power of the backup battery decreases to a second proportion threshold (lower than the first proportion threshold). Figure 3 For example, the control system can automatically stop the backup battery from supplying power to the non-essential electrical devices when the power of the backup battery decreases to a second proportion threshold (lower than the first proportion threshold). Figure 3 FIG. 1 is a flowchart of an electric vehicle power management method according to an embodiment of the present application. The electric vehicle power management method further includes step 240, which is specifically as follows.

[0100] Step 240: When it is monitored that the charging current and / or the charging voltage of the backup battery by the solar cell panel exceeds a safety range, stop the backup battery from being charged by the solar cell panel.

[0101] In the embodiment of the present application, the charging current and the charging voltage refer to the current and voltage values of the backup battery from the solar cell panel.

[0102] In the embodiment of the present application, the control system can acquire the charging current and the charging voltage of the backup battery by the solar cell panel in real time through the current sensor and the voltage sensor.

[0103] In the embodiment of the present application, the safety range refers to the maximum charging current and the maximum charging voltage of the backup battery allowed by the control system, which can be a pre-set upper limit value of the charging current of the backup battery by the solar cell panel and a pre-set upper limit value of the charging voltage of the backup battery by the solar cell panel.

[0104] In the embodiment of the present application, when the control system detects that the charging current or the charging voltage of the backup battery by the solar cell panel exceeds the safety range, the circuit of the backup battery and the solar cell panel is cut off through the intelligent switch or the relay, so as to prevent possible safety hazards, such as damage of the backup battery caused by overheat of the backup battery.

[0105] In some embodiments, the control system can resume the charging after stopping the charging, that is, when the charging current or the voltage of the backup battery by the solar cell panel returns to normal, the control system can automatically restore the charging capability of the backup battery by the solar cell panel, so as to continue to supplement the power of the backup battery by using the solar energy.

[0106] In the embodiments of the present application, the control system re-evaluates the charging conditions of the current solar panel after the solar panel stops charging the backup battery for a specified period of time, and resumes the charging operation after confirming safety. A lower initial current and voltage are used when resuming charging, and then the charging current and voltage are gradually increased to normal levels. This gradual resuming of charging helps to prolong the life of the backup battery.

[0107] In the embodiments of the present application, the control system monitors the charging current and voltage of the backup battery by the solar panel in real time, and immediately stops charging the backup battery by the solar panel when an abnormality is detected, preventing potential safety hazards and effectively prolonging the service life of the backup battery and improving the power safety of the electric vehicle.

[0108] Based on the schemes shown in any one or more of the above embodiments, in some embodiments, the control system displays high-temperature prompt information through the vehicle control application in response to the temperature of the backup battery reaching a first temperature. The high-temperature prompt information is used to remind the driver to manually disconnect the power of some specified electrical devices.

[0109] The first temperature threshold is a pre-set upper limit of safety temperature. When the temperature of the backup battery reaches this threshold, the control system triggers a high-temperature warning signal.

[0110] The high-temperature prompt information is warning information displayed by the vehicle control application to the user when the temperature of the backup battery is too high, reminding the driver to take measures to reduce the temperature.

[0111] In the embodiments of the present application, the backup battery is equipped with a temperature sensor that can monitor the temperature of the backup battery in real time. When the temperature of the backup battery reaches a pre-set first temperature threshold, the control system generates a high-temperature warning signal and sends it to the vehicle control application on the user's smart device through a wireless communication protocol. After receiving the high-temperature warning signal, the vehicle control application displays high-temperature prompt information on the user interface, which indicates the current temperature condition of the backup battery and the recommended measures, such as manually disconnecting non-critical electrical devices (e.g., air conditioning or entertainment systems of the electric vehicle) to reduce the power consumption of the backup battery and thus reduce the battery temperature. In some embodiments, the high-temperature prompt information can also include a sound or vibration alarm. Optionally, the vehicle control application can display an operation interface, and the user can achieve one-key shutdown of selected electrical devices by performing specified operations on the operation interface, so as to quickly shut down non-critical electrical devices and quickly reduce the power supply burden of the backup battery.

[0112] In the embodiment of the present application, when the temperature of the backup battery reaches the first temperature threshold, the control system generates a high temperature prompt information to guide the user to take action to reduce the load and temperature, which can effectively prevent the safety hazards caused by the overheating of the backup battery, effectively ensure the power safety of the electric vehicle, reduce unnecessary power consumption, and prolong the service life of the backup battery.

[0113] Based on the scheme shown in any one or more of the above embodiments, in some embodiments, the control system stops the backup battery from supplying power to the electric vehicle and ejects the backup battery out of the vehicle in response to the temperature of the backup battery reaching a second temperature, so as to avoid safety problems caused by the overheating of the backup battery; the first temperature is lower than the second temperature.

[0114] The second temperature threshold is a safety upper limit that is higher than the first temperature threshold.

[0115] In the embodiment of the present application, the temperature sensor of the backup battery monitors the temperature in real time, and when the temperature of the backup battery reaches the second temperature threshold, the control system cuts off the power connection between the backup battery and the electric vehicle, ensures that the backup battery does not supply power to any power-consuming device of the electric vehicle, activates the mechanical ejection device of the electric vehicle, and quickly ejects the backup battery from the inside of the electric vehicle to a safe distance.

[0116] In the embodiment of the present application, when the temperature of the backup battery reaches the second temperature threshold, the control system automatically stops the backup battery from supplying power to the vehicle, prevents the backup battery from further heating and potential risks, safely removes the backup battery from the vehicle, avoids fire or explosion caused by the thermal runaway of the backup battery, effectively prevents serious safety hazards caused by the overheating of the backup battery, and effectively ensures the power safety of the electric vehicle by physically isolating the potential safety hazards.

[0117] Based on the steps in the above Figure 2 and Figure 3 embodiments, the embodiment of the present application shows a solar-based vehicle power conversion mechanism.

[0118] For example, refer to Figure 4 , Figure 4 is a system function diagram of a solar-based vehicle power conversion mechanism of the present application. The system includes a solar panel 51, a backup battery 52, a vehicle control center 53, a server 54, and a mobile phone application 55. The solar panel 51 can be arranged outside the vehicle, the backup battery 52, the vehicle control center 53, and the server 54 are arranged inside the vehicle, and the mobile phone application 55 can control the vehicle through wireless communication with the server 54.

[0119] In the embodiment of the present application, the vehicle can convert solar energy into electric energy through photovoltaic power generation by the solar panel 51, store the electric energy in the backup battery 52 inside the vehicle, so that the user can normally use the car machine function when he wants to use it, or when the main battery of the vehicle is out of power, the backup battery 52 is used to supply power to the car machine central control 53. The solar power supply system is integrated in the car machine central control 53, and the driver program capable of communicating with the solar power supply system can exchange data with the solar panel 51 through a serial port, a CAN (Controller Area Network) bus or other communication protocols.

[0120] In the embodiment of the present application, the solar panel 51 can be arranged on the top of the vehicle to collect real-time electric energy data converted from solar energy. The vehicle controller has a data acquisition module that can transmit the electric energy data to the vehicle-mounted computer or embedded system, and display the electric energy data on the central control screen and display the current power in real time.

[0121] Among them, the above-mentioned electric energy data refers to various quantitative parameters generated in the process of converting solar energy into electric energy by the solar panel 51, and the electric energy data includes but is not limited to the following.

[0122] 1) Real-time power output, such as the power value recorded when the 35W street lamp is working, reflecting the power generation per unit time.

[0123] 2) Voltage / current parameters, such as the voltage range (2-4V) and current value (see table data) of the LED when working, which is the core index for evaluating the quality of electric energy.

[0124] 3) Energy conversion efficiency, such as 28% conversion rate calculation, which is obtained by comparing the incident solar energy (2.7×10 7 J) and the actual output electric energy (7.56×106J).

[0125] 4) Energy storage state parameters, such as the charge of the battery (such as 24V battery pack) and the depth of discharge, which directly affect the continuous power supply capability of the system.

[0126] 5) System loss data, such as line loss and inverter efficiency.

[0127] In the embodiments of the present application, in order to maximize the use of the energy provided by the solar panel, an energy management and optimization algorithm can be developed. The DRL (Deep Reinforcement Learning) algorithm combines deep learning and reinforcement learning, which can be used to optimize the energy management of the solar panel 51. The DRL algorithm can determine when to charge, when to discharge, and the distribution of electrical energy to each component in the vehicle according to the energy demand of the vehicle, the output of the solar panel 51, and the state of the battery (i.e. how much power the battery currently has, whether it needs to be converted into power).

[0128] In the embodiments of the present application, the mobile phone application 55 can enable the solar panel 51 to collect solar energy for the backup battery 52 after the user leaves the car, and power the car control 53 through the backup battery 52, so that the car control 53 executes the instructions from the server 54, and opens the external circulation, air conditioning temperature adjustment, etc. The server 54 is responsible for the execution of the mobile phone application 55 and the state of the car control 53 after executing the instructions. The mobile phone application 55 is responsible for sending operation instructions to the server 54 and receiving the operation completion feedback from the server 54, and observing the car state in time.

[0129] In the embodiments of the present application, a user interface is provided in the vehicle, which can display the output power of the solar panel 51, the charging state of the backup battery 52, the energy distribution, etc. The interface can be realized by using a graphics library, a UI library and a state monitoring library. In actual use, the solar power supply system may encounter failures, such as battery panel damage, communication interruption, etc. A fault detection module is provided in the solar power supply system, which includes a monitoring model that learns from the sensor data of the solar panel 51 using machine learning algorithms to predict failures in the early stage, monitor the running state of the system and take appropriate fault tolerance measures.

[0130] For example, please refer to Figure 5 , Figure 5 is a workflow diagram of a solar-based automobile power conversion mechanism of the present application.

[0131] In the embodiments of the present application, when the user leaves the car and locks the car, the vehicle automatically starts the battery to start the solar charging function, and converts the solar energy into electrical energy through the backup battery, and provides the electrical energy in the battery to the car control. The user can control the application on the car control through the mobile phone application, such as executing the operation of opening the air conditioner. After the air conditioner is turned on, the application uploads the state to the server, and the server sends the air conditioner state to the mobile phone application in the form of an interface.

[0132] The above involves modification of hardware and modification of software.

[0133] Firstly, a solar panel needs to be installed on the car machine to receive solar energy, and secondly, a backup battery needs to be added to the car machine to store solar energy and provide power when the main battery is out of power.

[0134] In order to maximize the energy capture efficiency, the core principle of adjusting the angle of the solar panel according to the light is to keep it perpendicular to the sunlight to maximize the energy conversion efficiency.

[0135] In the embodiments of the present application, the solar panel can be adjusted according to the dynamic tracking technology: 1. Light intensity is detected in real time by a photosensitive sensor. 2. The latitude and longitude and time data are obtained by GPS (Global Positioning System) positioning. 3. The target angle is calculated by PID (Proportional-Integral-Derivative Control) control algorithm:

[0136] (φ: latitude, δ: solar declination angle, ω: hour angle), to realize the function of adjusting the angle of the solar panel according to the angle and direction of the sun. The energy output of the solar panel is different under different light conditions, and the instability of light may cause fluctuations in energy production. The orientation of the panel can be optimized in real time by MPPT algorithm, which aims to ensure that the solar panel operates at maximum power under different light conditions, helping to improve energy production and reduce energy waste.

[0137] In the embodiments of the present application, artificial intelligence plays a role in optimizing the connection between renewable energy and traditional power grid, using artificial intelligence technology to predict and manage energy production and storage can solve the problem of power grid and alleviate large-scale power outage, through mathematical modeling, genetic algorithm or other optimization methods, according to the energy demand of the vehicle, the state of the battery and the output of the solar panel, to determine when to charge, when to discharge and how to allocate energy; secondly, network data request is needed, the data of the car machine is transmitted to the server, and the operation of the user on the mobile phone is transmitted to the server, so as to control the car machine. Whether in terms of safety or convenience, there is a great improvement, solving the problem of unmanageability of the car when the user is far away from the car, and the most common situation of summer heat of the car.

[0138] Please refer to Figure 6 , which shows a block diagram of an electric vehicle energy management device provided by an exemplary embodiment of the present application. The electric vehicle energy management device can be realized as all or part of a computer device by hardware or a combination of hardware and software, to realize all or part of the steps in the above Figure 2 to Figure 3 embodiments. As Figure 6As shown, the electric vehicle power management device comprises:

[0139] a solar charging management module 601, configured to control the solar panel to obtain power and charge the backup battery;

[0140] a backup battery starting module 602, configured to, when the electric vehicle is in a powered-off state, start the backup battery in response to receiving a first instruction sent by a vehicle control application, so as to control the electric vehicle to enter a powered-on state; the vehicle control application is an application having the capability of controlling the electric vehicle;

[0141] a function execution module 603, configured to, when the electric vehicle is in the powered-on state, control a specified power-consuming device to execute a function corresponding to a second instruction corresponding to the specified power-consuming device in response to receiving the second instruction sent by the vehicle control application.

[0142] In some embodiments, the solar charging management module 601 is configured to obtain longitude, latitude and time information of the solar panel through a global positioning system of the electric vehicle;

[0143] determine a solar declination angle based on the latitude and the time information;

[0144] determine a time angle based on the longitude, the latitude and the time information;

[0145] determine a target angle of the solar panel based on the latitude, the solar declination angle and the time angle through the following formula one:

[0146] Formula one:

[0147] wherein, the latitude is represented by φ, the solar declination angle is represented by δ, the time angle is represented by ω, and the target angle is represented by θ;

[0148] control the solar panel to be adjusted according to the target angle, so that the solar panel is perpendicular to the sunlight to obtain solar energy;

[0149] convert the solar energy into electric energy through the solar panel and charge the backup battery.

[0150] In some embodiments, the solar charging management module 601 comprises:

[0151] an electric vehicle solar monitoring module, configured to obtain output voltage, output current and environmental parameters of the solar panel through a sensor of the electric vehicle;

[0152] a panel adjustment module, configured to adjust the orientation of the solar panel based on the output voltage, the output current and the environmental parameters of the solar panel through an MPPT algorithm.

[0153] In some embodiments, the total capacity of the backup battery is less than 2 degrees of electricity;

[0154] When the proportion of the backup battery's electricity to the total capacity is lower than the first proportion threshold, the backup battery's power supply to the designated power-consuming device is limited.

[0155] In some embodiments, the apparatus further comprises:

[0156] A power supply stopping module is configured to stop the backup battery from supplying power to non-essential power-consuming devices in the designated power-consuming devices when the proportion of the backup battery's electricity to the total capacity is lower than a second proportion threshold; the second proportion threshold is lower than the first proportion threshold.

[0157] In some embodiments, the apparatus further comprises:

[0158] A charging stopping module is configured to stop the solar panel from charging the backup battery when it is monitored that the charging current and / or charging voltage of the solar panel to the backup battery exceeds a safe range.

[0159] Please refer to Figure 7 , Figure 7 is a structural diagram of a computer device provided by an exemplary embodiment of the present application. The computer device 700 comprises a central processing unit (CPU) 701, a system memory 704 comprising a random access memory (RAM) 702 and a read-only memory (ROM) 703, and a system bus 705 connecting the system memory 704 and the central processing unit 701. The computer device 700 further comprises a basic input / output system (I / O system) 706 to help transfer information between various devices in the computer, and a mass storage device 707 for storing an operating system 713, application programs 714, and other program modules 715.

[0160] The basic input / output system 706 comprises a display 708 for displaying information and an input device 709 such as a mouse, a keyboard, or the like for inputting information by a user. The display 708 and the input device 709 are both connected to the central processing unit 701 through an input / output controller 710 connected to the system bus 705. The basic input / output system 706 can also comprise the input / output controller 710 for receiving and processing inputs from a keyboard, a mouse, or an electronic stylus, and the like. Similarly, the input / output controller 710 also provides output to a display screen, a printer, or other types of output devices.

[0161] The mass storage device 707 is connected to the central processing unit 701 through a mass storage controller (not shown) connected to the system bus 705. The mass storage device 707 and its associated computer readable medium provide nonvolatile storage for the computer device 700. That is, the mass storage device 707 can include a computer readable medium (not shown) such as a hard disk or a CD-ROM (Compact Disc Read-Only Memory) drive.

[0162] Without loss of generality, the computer readable medium can include computer storage media and communication media. Computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM (Random Access Memory), ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid state memory technology, CD-ROM, digital video disc (DVD), or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, computer storage media does not limit to the above-mentioned several kinds. The system memory 704 and the mass storage device 707 mentioned above can be collectively referred to as memory.

[0163] The computer device 700 can be connected to the Internet or other network devices through the network interface unit 711 connected on the system bus 705.

[0164] The memory further includes one or more programs, and the one or more programs are stored in the memory, and the central processing unit 701 implements Figure 2 to Figure 4 all or part of the steps of the method shown in the embodiments.

[0165] In the exemplary embodiments, a chip is also provided, and the chip includes programmable logic circuit and / or program instructions, and when the chip is running on the computer device, the programmable logic circuit and / or program instructions are used to implement all or part of the steps of the method shown in the embodiments of the present application.

[0166] In an example embodiment, a computer program product is also provided, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor reads and executes the computer instructions from the computer readable storage medium to implement all or part of the steps of the method shown in the various embodiments of the present application.

[0167] In an example embodiment, a computer readable storage medium is also provided, which stores a computer program loaded and executed by a processor to implement all or part of the steps of the method shown in the various embodiments of the present application.

[0168] A person of ordinary skill in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program instructing relevant hardware, and the above-mentioned program can be stored in a computer readable storage medium, and the above-mentioned storage medium can be a read-only memory, a magnetic disk or an optical disk, etc.

[0169] A person of ordinary skill in the art should be aware that, in one or more examples described above, the functions described in the embodiments of the present application can be implemented in hardware, software, firmware or any combination thereof. When implemented in software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, and the communication medium includes any medium that facilitates the transfer of computer program from one place to another. The storage medium can be any available medium accessible by a general or special purpose computer.

[0170] The above is only an optional embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for managing the electrical energy of an electric vehicle, characterized in that, The method is executed by the control system of an electric vehicle, which is equipped with a solar panel, a main battery, and a backup battery. The main battery is used to power the drive system and various electrical components of the electric vehicle. The backup battery is used to store the electrical energy collected by the solar panel and to power designated electrical components in the electric vehicle. The designated electrical components are all or some of the various electrical components. The capacity of the backup battery is smaller than that of the main battery; The backup battery and the main battery are isolated by a heat-insulating material; the method includes: The longitude, latitude, and time information of the solar panel are obtained through the global positioning system of the electric vehicle; the solar declination angle is determined based on the latitude and time information; the hour angle is determined based on the longitude, latitude, and time information; and the target angle of the solar panel is determined based on the latitude, solar declination angle, and hour angle using the following formula: Formula 1: ; in, The latitude is represented by δ, the solar declination angle by ω, the hour angle by θ, and the target angle by θ. The solar panel is controlled to adjust according to the target angle so that it is perpendicular to the sunlight to obtain solar energy; the solar energy is converted into electrical energy through the solar panel and used to charge the backup battery; When the electric vehicle is in a powered-off state, in response to receiving a first instruction sent by the vehicle control application, the backup battery is activated to control the electric vehicle to enter a powered-on state; the vehicle control application is an application that has the ability to control the electric vehicle; When the electric vehicle is in the powered-on state, in response to receiving a second instruction sent by the vehicle control application corresponding to the designated electrical device, the designated electrical device is controlled to perform the function corresponding to the second instruction.

2. The method according to claim 1, characterized in that, The method further includes: The output voltage, output current, and environmental parameters of the solar panel are obtained through the sensors of the electric vehicle. Based on the output voltage, output current, and environmental parameters of the solar panel, the orientation of the solar panel is adjusted using the MPPT algorithm.

3. The method according to claim 1, characterized in that, The total capacity of the backup battery is less than 2 kWh. When the percentage of the backup battery's charge to the total capacity is lower than a first percentage threshold, the power supply from the backup battery to the designated electrical device is limited.

4. The method according to claim 3, characterized in that, The method further includes: When the percentage of the backup battery's charge to the total capacity is lower than a second percentage threshold, the backup battery stops supplying power to the non-essential electrical components among the designated electrical components; the second percentage threshold is lower than the first percentage threshold.

5. The method according to claim 1, characterized in that, The method further includes: When the charging current and / or charging voltage of the solar panel to the backup battery are detected to exceed the safe range, the charging of the backup battery by the solar panel is stopped.

6. An electric vehicle power management device for implementing the electric vehicle power management method as described in any one of claims 1 to 5, characterized in that, The device includes: The solar charging management module is used to acquire the longitude, latitude, and time information of the solar panel through the electric vehicle's GPS; determine the solar declination angle based on the latitude and time information; determine the hour angle based on the longitude, latitude, and time information; and determine the target angle of the solar panel based on the latitude, solar declination angle, and hour angle using the following formula: Formula 1: ;in, The latitude is represented by δ, the solar declination angle by ω, the hour angle by θ, and the target angle by θ. The solar panel is controlled to adjust according to the target angle so that it is perpendicular to the sunlight to obtain solar energy. The solar energy is converted into electrical energy through the solar panel and used to charge the backup battery. A backup battery starting module is used to start the backup battery in response to receiving a first instruction sent by a vehicle control application when the electric vehicle is in a power-off state, so as to control the electric vehicle to enter a power-on state; the vehicle control application is an application with the ability to control the electric vehicle; The function execution module is configured to, when the electric vehicle is in the powered-on state, respond to receiving a second instruction sent by the vehicle control application corresponding to the designated electrical device, and control the designated electrical device to execute the function corresponding to the second instruction.

7. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing instructions which are executed by the processor to implement the electric vehicle power management method as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The storage medium stores instructions that are executed by a processor of a computer device to implement the electric vehicle power management method as described in any one of claims 1 to 5.

9. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium; the computer instructions are read and executed by a processor of a computer device to implement the electric vehicle power management method as described in any one of claims 1 to 5.

Images