Control method for reducing electromagnetic radiation of vehicle, controller and vehicle

Abstract

The invention provides a control method for reducing electromagnetic radiation of a vehicle, a controller and the vehicle. The control method is used for controlling the vehicle to reduce electromagnetic radiation generated by the vehicle after a low electromagnetic radiation mode is started. The control method comprises the steps that in the running process of the vehicle, before it is detected that a low-electromagnetic-radiation mode is triggered, an electric appliance of the vehicle is controlled to run at first power. And after it is detected that the low-electromagnetic-radiation mode is triggered, a display screen of the vehicle is controlled to display an indication mark, wherein the indication mark is used for indicating the vehicle to start the low-electromagnetic-radiation mode. And after the low electromagnetic radiation mode is started, controlling the electric appliance of the vehicle to operate at a second power smaller than the first power. Wherein the electric device comprises at least one of a power assembly, a braking system or a low-voltage electric device of the vehicle. By implementing the control method, the power of the electric appliance of the vehicle can be limited after the low-electromagnetic-radiation mode of the vehicle is started, so that the electromagnetic radiation of the electric appliance is reduced, and the potential safety hazard that a user suffers from the electromagnetic radiation is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a control method, a controller and a vehicle for reducing electromagnetic radiation of a vehicle. Background Art

[0002] Currently, vehicles contain numerous electronic components, primarily including the drive system, air conditioning, wiper motors, fans, seats, display screens, and other auxiliary equipment. These electrical components and drive systems emit low-frequency electromagnetic radiation below 400kHz. Long-term exposure to high levels of electromagnetic radiation in a driving environment can increase safety risks, particularly for drivers. Therefore, reducing the intensity of electromagnetic radiation from electronic components is crucial. Summary of the Invention

[0003] The present application provides a control method, controller and vehicle for reducing vehicle electromagnetic radiation, which can limit the power of the vehicle's electrical appliances after enabling the low electromagnetic radiation mode, thereby reducing the electromagnetic radiation intensity of the electrical appliances and further reducing the safety risks of users being exposed to electromagnetic radiation.

[0004] In a first aspect, a control method for reducing electromagnetic radiation from a vehicle is provided. The control method is used to control a vehicle to reduce electromagnetic radiation generated by the vehicle after a low electromagnetic radiation mode is activated. The control method includes, during operation of the vehicle, and before detecting that the low electromagnetic radiation mode has been triggered, controlling electrical appliances in the vehicle to operate at a first power. After detecting that the low electromagnetic radiation mode has been triggered, controlling a display screen of the vehicle to display an indicator indicating that the vehicle has activated the low electromagnetic radiation mode. After the low electromagnetic radiation mode is activated, controlling the electrical appliances in the vehicle to operate at a second power lower than the first power. The electrical appliances include at least one of the vehicle's powertrain, braking system, or low-voltage electrical appliances.

[0005] Among them, the first power and the second power are only examples, indicating that after the low electromagnetic radiation mode is enabled, the vehicle will reduce the power of electrical appliances, thereby reducing the intensity of electromagnetic radiation to which the user is exposed. For example, after the low electromagnetic radiation mode is enabled, the power of the powertrain can be reduced by reducing the current and / or voltage output by the motor controller, thereby reducing the electromagnetic radiation caused by the powertrain. For example, after the low electromagnetic radiation mode is enabled, the power of the braking system can be reduced by reducing the current and / or voltage output by the wheel-end controller, thereby reducing the electromagnetic radiation caused by the powertrain. For example, after the low electromagnetic radiation mode is enabled, the power of low-voltage electrical devices can be limited by limiting the gear position of low-voltage electrical devices, such as limiting the gear position of smart wipers, thereby reducing the electromagnetic radiation caused by low-voltage electrical devices.

[0006] Based on the above solution, after the vehicle low electromagnetic radiation mode is enabled, the electromagnetic radiation of the electrical appliances is reduced by limiting the power of the vehicle, thereby reducing the safety risks of users being exposed to electromagnetic radiation.

[0007] In conjunction with the first aspect, in one embodiment of the first aspect, after detecting that the low electromagnetic radiation mode has been triggered, controlling the vehicle's display screen to display the indicator sign specifically includes: after detecting that the vehicle's passengers include at least one of an elderly person, an infant, or a pregnant woman, controlling the vehicle's display screen to display the indicator sign. The vehicle may automatically enable the low electromagnetic radiation mode and display the indicator sign, or the vehicle may prompt the vehicle whether to enable the low electromagnetic radiation mode by popping up a prompt box on the display screen or through a voice reminder system, and after the driver confirms, the low electromagnetic radiation mode is enabled and the indicator sign is displayed.

[0008] Based on the above solution, when there are elderly people, infants, pregnant women and other passengers who are sensitive to electromagnetic radiation, the vehicle will actively enter or actively prompt to enter low electromagnetic radiation mode, further reducing the safety risks of users being exposed to electromagnetic radiation.

[0009] In combination with the first aspect, in one embodiment of the first aspect, the control method also includes: after detecting that the passengers of the vehicle include at least one of an elderly person, an infant or a pregnant woman and the longitudinal acceleration of the vehicle is greater than a preset longitudinal acceleration, controlling the voice reminder system of the vehicle to output a voice message to the inside of the vehicle to prompt the user to enable the low electromagnetic radiation mode.

[0010] It is understood that the longitudinal acceleration of the vehicle is positively correlated with the driving torque output by the drive motor. To prevent a significant increase in electromagnetic radiation intensity when the motor's torque output is significantly increased, in this scenario, the voice reminder system 44 can prompt the user to enable the low electromagnetic radiation mode. After the low electromagnetic radiation mode is enabled, the motor controller can control the motor to reduce its torque output so that the vehicle's longitudinal acceleration is less than a preset longitudinal acceleration, thereby reducing the motor's electromagnetic radiation intensity by reducing the differential-mode current output by the motor.

[0011] Based on the above solution, when the longitudinal acceleration of the vehicle is large, the user can be prompted by voice to enable the low electromagnetic radiation mode to limit the torque output by the drive motor, further reducing the safety risks of the user being exposed to electromagnetic radiation from the drive motor.

[0012] In combination with the first aspect, in an implementation manner of the first aspect, the control method further includes: during the charging of the power battery of the vehicle, when it is detected that there are passengers in the cabin of the vehicle, controlling the display screen of the vehicle to display the indication mark.

[0013] It is understandable that when charging the power battery, especially when charging with DC fast charging, the current on the vehicle's DC bus is much higher than the average current value during driving, resulting in a significant increase in the intensity of electromagnetic radiation. Based on this, the control method provided in the embodiment of the present application will actively enable or prompt the user to enable the low electromagnetic radiation mode when a passenger is detected in the cabin. After the low electromagnetic radiation mode is enabled, the vehicle can limit the charging power of the power battery to less than the preset power, thereby reducing the electromagnetic radiation intensity of the power battery.

[0014] Based on the above solution, when the vehicle is charging and there are passengers in the cabin, the low electromagnetic radiation mode is enabled or prompted to be enabled to limit the charging power of the power battery, thereby reducing the safety risks of users being exposed to electromagnetic radiation from the power battery.

[0015] In combination with the first aspect, in an implementation manner of the first aspect, the control method further includes: controlling the display screen of the vehicle to display the indication mark while the vehicle is driving in at least one area of ​​a school, a hospital, or a kindergarten.

[0016] The low-electromagnetic radiation function provided in the embodiments of this application not only considers the risk of electromagnetic radiation exposure to the driver and passengers, but also the risk of electromagnetic radiation exposure to people around the vehicle. It is easy to understand that since there are a large number of people sensitive to electromagnetic radiation in areas around schools, hospitals, or kindergartens, the above control method can actively enable or prompt the low-electromagnetic radiation function when a vehicle is detected passing through such areas.

[0017] Based on the above solution, when the vehicle passes through areas such as schools, hospitals or kindergartens, the low electromagnetic radiation mode can be actively enabled or the user can be prompted to enable it, which is helpful in reducing the risk of electromagnetic radiation exposure to people around the vehicle.

[0018] In conjunction with the first aspect, in one embodiment of the first aspect, after detecting that the low electromagnetic radiation mode has been triggered, controlling the vehicle's display screen to display the indicator further includes: in response to touching the vehicle's display screen, or pressing the vehicle's radiation control button, or voice instruction to activate the low electromagnetic radiation mode, controlling the vehicle's display screen to display the indicator. Touching the vehicle's display screen refers to the driver touching the option for activating the low electromagnetic radiation mode on the display screen. Based on the above solution, the methods for activating the low electromagnetic radiation mode are diverse and highly convenient.

[0019] In combination with the first aspect, in one embodiment of the first aspect, the low-voltage electrical device includes one or more of a smart wiper, a seat, and an air conditioner, and the control of the electrical device of the vehicle to operate at a second power less than the first power specifically includes: controlling the gear position of the smart wiper to be in automatic adjustment mode, or prohibiting the gear adjustment of the seat when the seat bears weight, or when the command request temperature of the air conditioner is not in the temperature range after the cabin temperature of the vehicle is added or subtracted from the preset temperature, controlling the actual operating temperature of the air conditioner to be in the temperature range, or when the speed of the air outlet fan of the air conditioner is greater than the preset fan speed value, controlling the speed of the air outlet fan to be less than or equal to the preset fan speed value.

[0020] In combination with the first aspect, in one embodiment of the first aspect, the low-voltage electrical device also includes a wireless charging panel and a steering wheel heating device, and the control of the electrical device of the vehicle to operate at a second power less than the first power also includes: controlling the output power of the wireless charging panel of the vehicle to be less than a preset power, or prohibiting the gear adjustment of the seat heating when the seat bears weight, or prohibiting the gear adjustment of the steering wheel heating device of the vehicle.

[0021] Based on the above solution, after the low electromagnetic radiation mode is enabled, the vehicle can reduce the electromagnetic radiation of low-voltage electrical components in a variety of ways, thereby further reducing the risk of users being exposed to electromagnetic radiation.

[0022] In combination with the first aspect, in one embodiment of the first aspect, the vehicle also includes an on-board charger, which is used to receive alternating current and output direct current to the vehicle's power battery to charge the power battery. After the low electromagnetic radiation mode is enabled, the control method also includes: in response to the current of the direct current being greater than a preset current value, controlling the power switch tube of the power module in the on-board charger to reduce the switching frequency to a preset switching frequency value, and the preset current value is used to indicate that the electromagnetic radiation intensity of the on-board charger exceeds the preset electromagnetic radiation intensity value.

[0023] During the operation of the on-board charger, it is necessary to control the on-off state of the power switch tube in the power module to adjust the output current and voltage values. Therefore, in order to reduce the intensity of the electromagnetic radiation emitted by the on-board charger, the control method provided in the embodiment of the present application can not only reduce the operating power of the on-board charger, but also reduce the switching frequency of the switch tube to reduce the intensity of electromagnetic radiation.

[0024] Based on the above scheme, when the current of the on-board charger is large, that is, the electromagnetic radiation intensity of the on-board charger is strong, the switching frequency of the power switch tube can be reduced to reduce the electromagnetic radiation frequency, thereby reducing the electromagnetic radiation intensity of the on-board charger and reducing the safety risks of users being exposed to electromagnetic radiation.

[0025] In conjunction with the first aspect, in one embodiment of the first aspect, the powertrain includes a motor controller and a drive motor, the motor controller being configured to receive direct current (DC) power and output alternating current (AC) power to drive the drive motor. After the low electromagnetic radiation mode is activated, the control method further includes: when the opening of the vehicle's accelerator pedal is less than a first opening or the rate of increase of the accelerator pedal opening is less than a first preset rate of change, controlling the frequency of a power switch tube in a power conversion module in the motor controller to be less than a preset switching frequency value. Furthermore, when the opening of the vehicle's accelerator pedal is greater than the first opening and the rate of increase of the accelerator pedal opening is greater than the first preset rate of change, controlling the frequency of the power switch tube in the power conversion module in the motor controller to be greater than the preset switching frequency value.

[0026] Based on the above solution, when the vehicle needs to accelerate suddenly, the restriction on the switching frequency of the power switch tube can be released to enable the drive motor to output the torque indicated by the accelerator pedal opening, thereby taking into account both reducing electromagnetic radiation and meeting the vehicle's power requirements.

[0027] In conjunction with the first aspect, in one embodiment of the first aspect, the low electromagnetic radiation mode includes at least two gears, and the control method further includes: after the first gear of the low electromagnetic radiation mode is activated, controlling the electrical appliance to operate at the second power. After the second gear of the low electromagnetic radiation mode is activated, controlling the electrical appliance to operate at a third power that is less than the second power. It is understood that the low electromagnetic radiation mode can be further divided into more gears, allowing users to more flexibly select the corresponding gear based on their needs.

[0028] Based on the above scheme, the vehicle's low electromagnetic radiation mode can include multiple corresponding gears of different power for the vehicle's electrical appliances, so that users can enable the corresponding gears according to their own needs, which is conducive to improving the practicality of the low electromagnetic radiation mode and can further reduce the safety risks of users being exposed to electromagnetic radiation.

[0029] In conjunction with the first aspect, in one embodiment of the first aspect, the control method further includes: after the low electromagnetic radiation mode is activated, controlling the vehicle's display screen to display the duration of the low electromagnetic radiation mode. Optionally, after the low electromagnetic radiation mode is activated, the vehicle's display screen may also be controlled to display the reduced electromagnetic radiation intensity of the low electromagnetic radiation mode.

[0030] Based on the above solution, by controlling the duration of the low electromagnetic radiation mode displayed on the vehicle's display screen, the user's experience of the low electromagnetic radiation mode can be further enhanced.

[0031] In conjunction with the first aspect, in one embodiment of the first aspect, the control method further includes: when the vehicle speed at the time the low electromagnetic radiation mode is triggered is less than a preset speed, after the low electromagnetic radiation mode is activated, first controlling the powertrain to operate at the second power, and then controlling the low-voltage electrical components to operate at the second power. Furthermore, when the vehicle speed at the time the low electromagnetic radiation mode is triggered is greater than the preset speed, after the low electromagnetic radiation mode is activated, first controlling the low-voltage electrical components to operate at the second power, and then controlling the powertrain to operate at the second power. When the vehicle speed is less than the preset speed, it can be understood that the vehicle is in a low-speed driving state, and when the vehicle speed is greater than the preset speed, it can be understood that the vehicle has exited the low-speed driving state. Based on the above solution, by determining the order in which the vehicle's electrical components are controlled to reduce power based on the vehicle speed when the low electromagnetic radiation mode is triggered, it is possible to ensure that the vehicle's power requirements are met while also taking into account the user comfort provided by the low-voltage electrical components, thereby further improving the practicality of the low electromagnetic radiation mode.

[0032] In a second aspect, a controller is provided, which is used to execute the control method in any embodiment of the first aspect.

[0033] In a third aspect, a vehicle is provided, comprising a powertrain, a braking system, low-voltage electrical devices and the controller of the second aspect, wherein the controller is configured to reduce the power of at least one of the powertrain, the braking system and the low-voltage electrical devices when the low electromagnetic radiation mode of the vehicle is enabled.

[0034] Among them, the supplement, explanation and beneficial effects of the first aspect are also applicable to the second and third aspects above, and will not be repeated for the sake of brevity. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 1 is a schematic structural diagram of a vehicle 01 provided in an embodiment of the present application;

[0036] Figure 2 This is a structural block diagram of the vehicle 01 provided in an embodiment of the present application;

[0037] Figure 3 is a schematic diagram of a control method provided in an embodiment of the present application;

[0038] Figure 4 It is a schematic diagram of the user interface of vehicle 01 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The technical solution in this application will be described below with reference to the accompanying drawings.

[0040] References to "some embodiments" and the like in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in some embodiments" and the like that appear in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0041] The implementation of the technical solution of the present application is further described in detail below with reference to the accompanying drawings.

[0042] See also Figure 1 , Figure 1 Schematic diagram of the structure of the vehicle provided in the embodiment of the present application. Figure 1 As shown, the vehicle 01 includes a powertrain 10, a power battery 20, a braking system 30 and low-voltage electrical components 40. Exemplarily, the low-voltage electrical components 40 include at least one of a seat, an air conditioner, an air outlet fan of the air conditioner and a smart wiper.

[0043] The vehicle 01 in the embodiment of the present application can be any of different types of vehicles such as a car, a truck, a passenger bus, etc., and can also be a transport device for carrying people or goods such as a tricycle or a two-wheeled vehicle, or other types of vehicles driven by power batteries, which are not limited in the embodiment of the present application. Among them, vehicles include but are not limited to pure electric vehicles (pure electric vehicles / battery electric vehicles, pure EV / battery EV), hybrid electric vehicles (hybrid electric vehicles, HEV), range extended electric vehicles (REEV), plug-in hybrid electric vehicles (PHEV), etc.

[0044] Among them, the powertrain 10 includes a motor controller (MCU) 11 and a drive motor 12. The motor controller 11 is used to receive DC power from the power battery 20 and output AC voltage to the drive motor 12 to drive the drive motor 12 to rotate, so that the drive motor 12 runs and drives the vehicle 01 to move.

[0045] The braking system 30 includes a central controller 31 and four independent braking units 32. Each braking unit is mainly composed of a wheel-end controller and a brake actuator (not shown in the figure). During the braking process of the vehicle 01, the central controller 31 can generate a braking signal based on the travel of the brake pedal and output the braking signal to the wheel-end controller of one or more braking units, so that the brake actuator can output the braking force indicated by the braking signal to the corresponding wheel, thereby preventing the wheel from rotating or preventing the wheel from rotating.

[0046] It can be understood that the brake in the braking system in the embodiment of the present application can be an electronic hydraulic brake (EHB) or an electronic mechanical brake (EMB) or other types of brakes, without limitation.

[0047] In some embodiments, the vehicle 01 further includes an on-board charger (OBC) 70 (not shown in the figure). The on-board charger 70 can be integrated into the powertrain or assembled in the vehicle as a separate device. The on-board charger 70 can be used to receive current provided by an external power source and output direct current to the power battery 20 to charge the power battery. The on-board charger 70 can also supply power to the outside. Specifically, the on-board charger 70 is used to connect an external load. In this case, the on-board charger 70 is used to convert the direct current from the power battery 20 into alternating current to power the external load. Among them, the external load can be an electrical device or other energy storage device, which is not limited in the embodiments of the present application.

[0048] In the embodiment of the present application, vehicle 01 further includes a vehicle controller 50, which is configured to execute the control method described below. For example, since the drive motor 12 emits low-frequency electromagnetic radiation during operation, the vehicle controller 50 can control the motor controller 11 to reduce the electromagnetic radiation intensity of the drive motor 12, thereby reducing the electromagnetic radiation intensity of the powertrain 10. It can also control the wheel-end controller to reduce the electromagnetic radiation intensity of the brake motor, thereby reducing the electromagnetic radiation intensity of the braking system. For example, since the low-voltage electrical components 40 also emit low-frequency electromagnetic radiation during operation, the vehicle controller 50 is further configured to reduce the electromagnetic radiation intensity of the low-voltage electrical components 40. For example, since the on-board charger 70 also emits electromagnetic radiation when charging the power battery or supplying power to external loads, the vehicle controller 50 is further configured to reduce the electromagnetic radiation intensity of the on-board charger 70. The implementation of the embodiments of the present application can reduce the electromagnetic radiation intensity of at least one of the drive motor 12, the brake motor in the brake actuator, the low-voltage electrical device 40, and the on-board charger 70, thereby significantly reducing the electromagnetic radiation intensity of the vehicle 01, providing users with a low-electromagnetic radiation vehicle environment, and reducing the safety risks of users being exposed to electromagnetic radiation.

[0049] It is understood that the vehicle controller in this application can be a single controller, such as the motor controller 11, central controller 31, or vehicle controller in the powertrain 10, or a separate controller with control capabilities. Alternatively, the vehicle controller can be a controller cluster consisting of multiple controllers, for example, including but not limited to the central controller 31 and the vehicle controller.

[0050] See also Figure 2 , Figure 2 This is a structural block diagram of a vehicle provided in an embodiment of the present application. Figure 2 As shown, when the vehicle's low electromagnetic radiation mode is enabled, the vehicle controller 50 sends an enable signal EN to the motor controller 11 and the wheel-end controller in the brake unit 32, instructing the motor controller 11 and the wheel-end controller to reduce radiation intensity. Taking the motor controller 11 as an example, when low electromagnetic radiation mode is not enabled, the motor controller 11 outputs a drive signal to the power switch of the power conversion module 111 based on the AC voltage required by the motor 12, causing the power conversion module 111 to output the AC voltage to drive the motor 12. The enable signal EN is a signal that controls the vehicle's low electromagnetic radiation mode, which is an operating mode that reduces the vehicle's electromagnetic radiation.

[0051] Continue to refer Figure 2 , the above Figure 2The vehicle 01 shown also includes a vehicle controller 80, smart wipers 41, seats 42, air conditioner 43, voice reminder system 44, wireless charging panel 45, and steering wheel heater 46. The motor controller 11 and smart wipers 41 are respectively connected to the vehicle controller 80 for communication, while the seats 42 and air conditioner 43 steering wheel heater are respectively connected to the vehicle controller 80 for communication. After the low electromagnetic radiation mode is enabled, the vehicle controller 50 also sends an enable signal EN to the vehicle controller to instruct the vehicle controller 25 to perform an operation to reduce the intensity of electromagnetic radiation. When the low electromagnetic radiation mode is not enabled, the vehicle controller does not perform the operation to reduce the intensity of electromagnetic radiation. That is, the gear position of the smart wipers 41, the gear position of the seats 42, the actual operating temperature of the air conditioner 43, the speed of the air outlet fan 431 of the air conditioner 43, the charging power of the wireless charging panel 45, and the gear position of the steering wheel heater 46 remain unchanged.

[0052] The following introduces the specific functions of the low electromagnetic radiation mode provided in the embodiment of the present application.

[0053] It should be noted that the control method provided in the embodiment of the present application is used to control the vehicle to reduce the electromagnetic radiation generated by at least one of the powertrain, braking system or low-voltage electrical components in the vehicle after the low electromagnetic radiation mode is enabled. Figure 3 As shown, in some embodiments, the control method includes:

[0054] S310: During vehicle operation, before detecting that the low electromagnetic radiation mode is enabled, controlling electrical appliances of the vehicle 01 to operate at a first power. The electrical appliances include at least one of the vehicle's powertrain 10, braking system 30, or low-voltage electrical components 40.

[0055] S320: After detecting that the low electromagnetic radiation mode is enabled, controlling the display screen of the vehicle to display an indicator mark, where the indicator mark is used to instruct the vehicle to enable the low electromagnetic radiation mode.

[0056] S330 , after the low electromagnetic radiation mode is enabled, controlling the electrical appliances of the vehicle 01 to operate at a second power that is lower than the first power.

[0057] Among them, the first power and the second power are only examples, indicating that after the low electromagnetic radiation mode is enabled, the vehicle will reduce the power of electrical appliances, thereby reducing the intensity of electromagnetic radiation to which the user is exposed. For example, after the low electromagnetic radiation mode is enabled, the power of the powertrain can be reduced by reducing the current and / or voltage output by the motor controller, thereby reducing the electromagnetic radiation caused by the powertrain. For example, after the low electromagnetic radiation mode is enabled, the power of the braking system can be reduced by reducing the current and / or voltage output by the wheel-end controller, thereby reducing the electromagnetic radiation caused by the powertrain. For example, after the low electromagnetic radiation mode is enabled, the power of low-voltage electrical devices can be reduced by limiting the gear position of low-voltage electrical devices, such as limiting the gear position of smart wipers, thereby reducing the electromagnetic radiation caused by low-voltage electrical devices.

[0058] It can be understood that the low electromagnetic radiation mode is a mode that improves user comfort and experience, and human-computer interaction is also a very important part of the user experience. In the embodiment of the present application, after the user activates the low electromagnetic radiation mode, the vehicle's central control screen will prompt that the low electromagnetic radiation mode has been activated and display an indicator unique to the low electromagnetic radiation mode. Among them, the embodiment of the present application does not limit the specific form of the indicator. For example, Figure 4 As shown in (a) of FIG, the indicator can be a simple drawing of a pregnant woman, a baby, an old man, etc. placed in the safe house, and the electromagnetic radiation around the safe house is reduced in an animation. Figure 4 As shown in (b) of the figure, the indicator can be a stick figure representing a pregnant woman, a baby, or an elderly person, with the expression changing from unhappy in a high-electromagnetic-radiation environment to happy in a low-electromagnetic-radiation environment. This can enhance the user's visual experience of the low-electromagnetic-radiation mode.

[0059] It is understood that the control method provided in this application can not only control the display of the above-mentioned indicator on the central control screen of vehicle 01, but also control the display of the indicator on other screens of vehicle 01, such as the main driver's instrument screen, the passenger screen, or the head-up display (HUD). In addition, when the low electromagnetic radiation mode is enabled, the ambient light of vehicle 01 can be controlled to be green and flash slowly. This can further enhance the user's visual experience and enhance the sense of atmosphere.

[0060] In some embodiments, the control method further includes: after the low electromagnetic radiation mode is enabled, controlling the vehicle's display screen to display the duration of the low electromagnetic radiation mode operation. Taking the low electromagnetic radiation mode running for 5 minutes as an example, the vehicle's display screen can be controlled to display "Low electromagnetic radiation mode has been with you for 5 minutes" or "Low electromagnetic radiation mode has been protecting you for 5 minutes". Optionally, after the low electromagnetic radiation mode is enabled, the vehicle's display screen can also be controlled to display the electromagnetic radiation intensity reduced by the low electromagnetic radiation mode. By implementing the embodiments of the present application, by controlling the vehicle's display screen to display the duration of the low electromagnetic radiation mode operation, the user's experience of the low electromagnetic radiation mode can be further enhanced.

[0061] Based on the above solution, when the vehicle's low electromagnetic radiation mode is enabled, the electromagnetic radiation of the electrical appliances is reduced by limiting the power of the vehicle's electrical appliances, thereby reducing the electromagnetic radiation intensity of the electrical appliances and reducing the safety risks of users being exposed to electromagnetic radiation.

[0062] It is understood that low electromagnetic radiation mode can be enabled proactively by the driver, or in certain specific scenarios, by the vehicle, or by the vehicle prompting the driver to enable it. The vehicle can prompt the driver to enable low electromagnetic radiation mode by displaying a pop-up box on the display, or by voice prompting system 44. Alternatively, the user can select whether the vehicle can proactively enable low electromagnetic radiation mode, for example, through a preference setting in the vehicle computer, without limitation.

[0063] In some embodiments, in response to touching the display screen of the vehicle, or pressing the radiation control button of the vehicle, or voice instructions to enable the low electromagnetic radiation mode, the low electromagnetic radiation mode of the vehicle is controlled to be enabled. Wherein, touching the display screen of the vehicle refers to the driver touching the option for enabling the low electromagnetic radiation mode in the display screen. Wherein, the radiation control button of the vehicle can be a button dedicated to enabling the low electromagnetic radiation mode in the central control area of ​​the vehicle or on the steering wheel, or it can be a button for confirming the prompt to turn on the low electromagnetic radiation mode. Wherein, the voice instruction to enable the low electromagnetic radiation mode can be the driver actively waking up the vehicle's voice assistant and instructing to turn on the low electromagnetic radiation mode, or it can be the driver responding to confirm that the voice assistant actively asks whether to turn on the low electromagnetic radiation mode. Based on the above scheme, the ways to enable the low electromagnetic radiation mode are diverse and convenient.

[0064] In some embodiments, the control method further includes: after detecting that the vehicle's passengers include at least one of the elderly, infants, or pregnant women, controlling the vehicle's display screen to display the indicator sign. Since the elderly, infants, pregnant women, and other subjects are more sensitive to electromagnetic radiation, when the vehicle detects the aforementioned subjects entering the cabin through a detection device such as a camera in the cabin, it will actively enable low electromagnetic radiation mode or ask the driver and enable low electromagnetic radiation mode after the driver confirms and display the indicator sign to indicate that the low electromagnetic radiation mode has been enabled. Based on the above scheme, when there are elderly, infants, pregnant women, and other subjects who are sensitive to electromagnetic radiation among the passengers, the vehicle will actively enter or actively prompt to enter low electromagnetic radiation mode, further reducing the safety risks of users being exposed to electromagnetic radiation.

[0065] In these embodiments, the control method further includes: after detecting that the vehicle's passengers include at least one of an elderly person, an infant, or a pregnant woman, and the vehicle actively inquires whether to enable the low electromagnetic radiation mode and the user does not choose to enable it for a first period of time, controlling the vehicle to inquire again whether to enable the low electromagnetic radiation mode. The first period of time can be set by the user, for example, 5 minutes (min). Furthermore, the aforementioned re-inquiry can be periodic, that is, after the user does not choose to enable the low electromagnetic radiation mode, the vehicle is controlled to inquire whether to enable the low electromagnetic radiation mode after every first period of time. In this way, the user can be provided with a choice again after missing the prompt of whether to enable the low electromagnetic radiation mode, which is conducive to improving the practicality of the function.

[0066] In some embodiments, the control method further includes: upon detecting that the vehicle's occupants include at least one of an elderly person, an infant, or a pregnant woman, and the vehicle's longitudinal acceleration is greater than a preset longitudinal acceleration, controlling the vehicle's voice reminder system 44 to output a voice message to the vehicle interior prompting the user to enable low electromagnetic radiation mode. For example, the preset longitudinal acceleration can be 0.2 times the acceleration of gravity. It is readily understood that the vehicle's longitudinal acceleration is positively correlated with the drive torque output by the drive motor. To avoid a significant increase in electromagnetic radiation intensity when the motor's torque output is significantly increased, the control method provided in embodiments of the present application prompts the user to enable low electromagnetic radiation mode via the voice reminder system 44 in this scenario. After enabling low electromagnetic radiation mode, the motor controller can control the motor to reduce torque output so that the vehicle's longitudinal acceleration is less than the preset longitudinal acceleration, thereby reducing the motor's electromagnetic radiation intensity by reducing the motor's differential-mode current. Thus, when the vehicle's longitudinal acceleration is high, a voice reminder can be provided to the user to enable low electromagnetic radiation mode to limit the drive motor's torque, thereby reducing the potential safety risk of electromagnetic radiation from the drive motor.

[0067] In some embodiments, the control method further includes: during the process of charging the power battery of the vehicle, detecting the presence of a passenger in the cabin of the vehicle, and controlling the display screen of the vehicle to display the indicator. When charging the power battery, especially DC fast charging, the current on the DC bus of the vehicle is much higher than the average current value during driving, which causes the electromagnetic radiation intensity to be significantly enhanced. Based on this, the control method provided in the embodiment of the present application will actively enable or prompt the user to enable the low electromagnetic radiation mode when it detects that there is a passenger in the cabin. After the low electromagnetic radiation mode is enabled, the vehicle can limit the charging power of the power battery to less than the preset power, thereby reducing the electromagnetic radiation intensity of the power battery. Exemplarily, the preset power can be 50% of the peak charging power of the power battery. In this way, when the vehicle is charging and there are passengers in the cabin, the low electromagnetic radiation mode is enabled or prompted to be enabled to limit the charging power of the power battery, thereby reducing the safety risks of the user being exposed to electromagnetic radiation from the power battery.

[0068] In these embodiments, the vehicle may actively enable or prompt the user to enable the low electromagnetic radiation mode when connected to the charging pile, or the vehicle may actively enable or prompt the user to enable the low electromagnetic radiation mode when the power battery starts to receive DC power, without limitation.

[0069] In some embodiments, the control method further includes: controlling the display screen of the vehicle to display the indicator logo while the vehicle is traveling in at least one area of ​​a school, a hospital, or a kindergarten. The low electromagnetic radiation function provided in the embodiment of the present application not only considers the risk of electromagnetic radiation to the driver and passengers, but also considers the risk of electromagnetic radiation to the people around the vehicle. It is easy to understand that since there are a large number of people sensitive to electromagnetic radiation in the areas around schools, hospitals, or kindergartens, the above control method can actively enable or prompt to enable the low electromagnetic radiation function when it is detected that the vehicle passes through the aforementioned area. Exemplarily, when the vehicle's Global Navigation Satellite System (GNSS) identifies that the distance between the vehicle and one of the aforementioned areas is less than a preset distance (e.g., 50m), or when the vehicle's millimeter wave radar or external camera identifies that the vehicle is approaching one of the aforementioned areas, the vehicle can actively enable or prompt the user to enable the low electromagnetic function. In this way, the vehicle can enable the low electromagnetic radiation mode when driving through areas such as schools, hospitals, or kindergartens to reduce the risk of electromagnetic radiation to the people around the vehicle.

[0070] Furthermore, when the vehicle is traveling in at least one of the aforementioned areas and its speed is less than a second preset speed, the vehicle's display screen is controlled to display the indicator. The second preset speed may be 20 kilometers per hour (kph). In this way, the low electromagnetic radiation mode is activated only when the vehicle is traveling at a low speed through the aforementioned areas to reduce electromagnetic radiation to people around the vehicle. The low electromagnetic radiation mode does not need to be activated when the vehicle can travel quickly through the aforementioned areas to ensure vehicle comfort.

[0071] The following describes a specific method of reducing electromagnetic radiation from electrical appliances in a vehicle after the low electromagnetic radiation mode is activated, with reference to specific embodiments.

[0072] In some embodiments, after the low electromagnetic radiation mode is enabled, the motor controller 11 is controlled to collect the current of the motor 12. Optionally, the motor controller 11 is controlled to collect the speed and torque of the motor 12 to obtain the current of the motor 12. In a specific implementation, the motor controller 11 is further configured to find a target correspondence relationship from multiple sets of correspondence relationships between the speed and torque of the motor 12 and the current of the motor 12 based on the speed and torque of the motor 12, and use the current in the target correspondence relationship as the current of the motor 12. Exemplarily, the current of the motor 12 can be an effective current value.

[0073] Taking the drive motor as an example, when the current of motor 12 is greater than a preset current value, motor controller 11 controls the power switch tube of power conversion module 111 to reduce the switching frequency to a preset switching frequency value. The preset current value is used to indicate that the electromagnetic radiation intensity of motor 12 exceeds the preset electromagnetic radiation intensity value. That is, when the current I of motor 12 is between [preset current value, maximum operating current], the electromagnetic radiation intensity of motor 12 is between [preset electromagnetic radiation intensity value, maximum electromagnetic radiation intensity]. The preset current value is positively correlated with the maximum operating current of motor 12. For example, the preset current value can be 50% to 75% of the maximum operating current of motor 12. The preset electromagnetic radiation intensity value is positively correlated with the maximum electromagnetic radiation intensity of motor 12. For example, the preset electromagnetic radiation intensity value can be 50% to 75% of the maximum electromagnetic radiation intensity of motor 12. In a specific implementation, when the current of the motor 12 is greater than a preset current value, the motor controller 11 can control the power switch tube of the power conversion module 111 to step down or linearly reduce the switching frequency to a preset switching frequency value. The above is merely an example, and the embodiments of the present application do not limit the specific method of reducing the switching frequency. In implementing the embodiments of the present application, when the current of the motor 12 is large, that is, the electromagnetic radiation intensity of the motor 12 is strong, the switching frequency of the power switch tube can be reduced to reduce the frequency of the electromagnetic radiation output by the motor 12, thereby reducing the electromagnetic radiation intensity of the motor 12 and further reducing the safety risks of the user being exposed to electromagnetic radiation.

[0074] In some embodiments, during the process of reducing the switching frequency of the power switch tube, when the operating speed of the motor 12 at a first moment is greater than the operating speed of the motor 12 at a second moment, the upper limit of the switching frequency value reduced by the power switch tube at the first moment is less than the upper limit of the switching frequency value reduced by the power switch tube at the second moment. The first moment may be before or after the second moment. By implementing the embodiments of the present application, the upper limit of the switching frequency value reduced by the power switch tube at different moments can be flexibly adjusted according to the operating speed of the motor 12, so that it meets the frequency requirement for reducing the electromagnetic radiation intensity of the motor 12, and the control flexibility is enhanced.

[0075] Based on the above solution, the electromagnetic radiation intensity of the motor 12 in daily driving scenarios and vehicle static scenarios can be greatly reduced, thereby providing users with a low electromagnetic radiation vehicle environment and reducing the safety risks of users being exposed to electromagnetic radiation.

[0076] In some embodiments, after the low electromagnetic radiation mode is enabled, when the opening of the vehicle's accelerator pedal is greater than a first opening and the rate of increase of the accelerator pedal opening is less than a first preset rate of change, the control method further includes controlling the frequency of the power switch tube of the power conversion module in the motor controller to be less than a preset switching frequency value. When the opening of the vehicle's accelerator pedal is greater than the first opening and the rate of increase of the accelerator pedal opening is greater than the first preset rate of change, the control method further includes controlling the frequency of the power switch tube of the power conversion module in the motor controller to be greater than a preset switching frequency value.

[0077] Among them, the first opening can be understood as a larger opening value, and the first preset change rate can be understood as a larger change rate. When the opening of the accelerator pedal is greater than the first opening and the rate of increase of the accelerator pedal is greater than the first preset change rate, it means that the user expects the powertrain to quickly increase the torque output to accelerate the vehicle urgently. In this scenario, in order to avoid the power and switching frequency of the powertrain in the low electromagnetic radiation mode being limited, resulting in the inability to meet the user's power demand for the vehicle, the control method provided in the embodiment of the present application will release the restriction on the switching frequency of the power switch tube in the motor controller, so that the motor controller can quickly increase the output current and voltage, so that the drive motor can quickly increase the torque and / or speed to match the power demand. By implementing the embodiment of the present application, when the vehicle needs to accelerate suddenly, the restriction on the switching frequency of the power switch tube can be lifted so that the drive motor outputs the torque indicated by the accelerator pedal opening, thereby taking into account both reducing electromagnetic radiation and meeting the power demand of the vehicle.

[0078] In some embodiments, the electrical appliances of the vehicle are controlled to operate at a second power less than the first power, specifically including: controlling the gear of the smart wiper to be in automatic adjustment mode, or prohibiting the gear adjustment of the seat when the seat is carrying weight, or controlling the actual operating temperature of the air conditioner to be within a temperature range when the temperature requested by the air conditioner is not within the temperature range of the vehicle's cabin temperature plus or minus a preset temperature, or controlling the speed of the air outlet fan of the air conditioner to be less than or equal to the preset fan speed value when the speed of the air outlet fan is greater than the preset fan speed value.

[0079] In a specific implementation, when the gear position of the smart wiper 41 is in the manual adjustment mode, the gear position of the smart wiper 41 is controlled to switch from the manual adjustment mode to the automatic adjustment mode. In the manual adjustment mode, the gear position of the smart wiper 41 can be manually adjusted by the user, while in the automatic adjustment mode, the gear position of the smart wiper 41 is the lowest wiper gear position adjusted according to the driving speed and rainfall conditions of the vehicle 01. When the gear position of the smart wiper 41 is in the automatic adjustment mode, the gear position of the smart wiper 41 is controlled to remain unchanged. By implementing the embodiment of the present application, the gear position of the smart wiper 41 can be intelligently adjusted to the automatic adjustment mode, so that the gear position of the smart wiper 41 always remains at the lowest wiper gear position adjusted in the automatic adjustment mode, thereby reducing the electromagnetic radiation intensity of the smart wiper 41, and further reducing the safety risks of users being exposed to electromagnetic radiation.

[0080] In a specific implementation, the gear adjustment of the seat is prohibited when the vehicle bears weight. Specifically, when the seat 42 bears weight, the gear of the seat 42 is lowered to a preset gear. When the gear of the seat 42 is higher, the speed of adjusting the seat position is faster, and when the gear of the seat 42 is lower, the speed of adjusting the seat position is slower. Exemplarily, the preset gear is the lowest gear of the seat 42, or other gears in the gear of the seat 42 that can meet the requirement of reducing the electromagnetic radiation intensity of the seat 42, which is not limited here. In implementing the embodiment of the present application, the gear of the seat 42 can be lowered to reduce the speed of adjusting the seat position, thereby reducing the electromagnetic radiation intensity of the seat 42, and further reducing the safety hazard of the user being exposed to electromagnetic radiation.

[0081] Optionally, when the seat 42 is unloaded, the seat position is controlled to be in an adjustable state. In this case, the adjustment level of the seat can be determined by the actual application scenario and is not limited here. In the adjustable state, the vehicle controller 80 can adjust the seat position up, down, left, and right.

[0082] In a specific implementation, when the commanded temperature request of the air conditioner 43 is not within the temperature range of the vehicle 01 cabin temperature plus or minus a preset temperature, the actual operating temperature of the air conditioner 43 is controlled to be within the temperature range. The cabin temperature of the vehicle 01 can be transmitted to the vehicle controller 80 by an external temperature sensor, or directly acquired by a temperature sensor within the vehicle controller 80. For example, the preset temperature can be 2 degrees Celsius. Implementing this embodiment of the present application can reduce the temperature difference between the actual operating temperature of the air conditioner 43 and the cabin temperature, thereby reducing the intensity of electromagnetic radiation from the air conditioner 43 and, in turn, minimizing the safety risks of electromagnetic radiation to the user.

[0083] In a specific implementation, when the speed of the outlet fan 431 is greater than a preset fan speed value, the speed of the outlet fan 431 is controlled to be less than or equal to the preset fan speed value. The preset fan speed value is a value set in advance. For example, the preset fan speed value is 30% of the maximum fan speed. In implementing the embodiment of the present application, when the speed of the outlet fan 431 is relatively high, reducing the speed of the outlet fan 431 can reduce the electromagnetic radiation intensity of the fan 431, thereby reducing the safety hazard of electromagnetic radiation to the user.

[0084] In some embodiments, controlling the vehicle's electrical appliances to operate at a second power less than the first power also includes: controlling the output power of the vehicle's wireless charging panel to be less than a preset power, or prohibiting the gear adjustment of the seat heating when the seat is carrying weight, or prohibiting the gear adjustment of the steering wheel heating device.

[0085] In a specific implementation, when the low electromagnetic radiation mode is enabled and the actual output power of the wireless charging panel 45 is greater than a preset power, the wireless charging panel 45 is controlled to reduce its output power to less than the preset power, thereby reducing the electromagnetic radiation of the wireless charging panel 45. For example, the preset power may be 50% of the rated power of the wireless charging panel 45. By implementing this embodiment of the present application, when the low electromagnetic radiation mode is enabled, the power used by the wireless charging panel 45 to charge the user's electronic device can be limited, thereby reducing the electromagnetic radiation intensity of the wireless charging panel 45 and, in turn, minimizing the safety risks of the user being exposed to electromagnetic radiation.

[0086] In a specific implementation, the gear adjustment of the seat heating is prohibited when the low electromagnetic radiation mode is enabled and the vehicle is bearing weight. Specifically, when the seat 42 bears weight, the gear of the seat 42 heating is adjusted down to a preset gear. When the gear of the seat heating is higher, the power of the seat heating device is higher and the seat heats up faster, while when the gear of the seat heating is lower, the power of the seat heating device is lower and the seat heats up slower. Exemplarily, the preset gear is the lowest gear of the seat heating, or other gears of the seat heating that can meet the requirement of reducing the electromagnetic radiation intensity of the seat 42, which is not limited here. In implementing the embodiment of the present application, after the low electromagnetic radiation mode is enabled, the gear of the seat heating can be adjusted down to slow down the speed at which the seat heats up, thereby reducing the electromagnetic radiation intensity of the seat 42, and thereby reducing the safety hazard of the user being exposed to electromagnetic radiation.

[0087] In a specific implementation, the gear adjustment of the steering wheel heating device 46 is prohibited when the low electromagnetic radiation mode is enabled and the steering wheel heating function is enabled. Specifically, when the steering wheel heating function is enabled, the gear of the steering wheel heating device 46 is lowered to a preset gear. Similarly, the higher the gear of the steering wheel heating device 46, the higher the working power of the device and the faster the steering wheel heats up. Exemplarily, the preset gear is the lowest gear of the steering wheel heating device 46, or other gears in the gears of the steering wheel heating device 46 that can meet the requirement of reducing the electromagnetic radiation intensity of the steering wheel heating device 46, which is not limited here. In implementing the embodiment of the present application, the gear of the steering wheel heating device 46 can be lowered to slow down the speed at which the steering wheel heats up, thereby reducing the electromagnetic radiation intensity of the steering wheel heating device 46, and thereby reducing the safety risks of the user being exposed to electromagnetic radiation.

[0088] In some embodiments, the control method further includes: in response to the DC current outputted by the onboard charger 70 to the power battery being greater than a preset current value, controlling the power switch tube of the power module in the onboard charger 70 to reduce the switching frequency to a preset switching frequency value, wherein the preset current value is used to indicate that the electromagnetic radiation intensity of the onboard charger 70 exceeds the preset electromagnetic radiation intensity value. During the operation of the onboard charger 70, it is necessary to control the on-off regulation of the power switch tube in the power module to adjust the output current and voltage values. Therefore, in order to reduce the intensity of the electromagnetic radiation emitted by the onboard charger 70, the control method provided in the embodiment of the present application can reduce the switching frequency of the switch tube to reduce the electromagnetic radiation intensity in addition to reducing the operating power of the onboard charger. The specific method for reducing the switching frequency of the power switch tube in the onboard charger 70 can be referred to the relevant description of the motor controller and is not described in detail here. When implementing the embodiment of the present application, when the current of the on-board charger 70 is large, that is, the electromagnetic radiation intensity of the on-board charger is strong, the switching frequency of the power switch tube can be reduced to reduce the electromagnetic radiation frequency, thereby reducing the electromagnetic radiation intensity of the on-board charger 70 and reducing the safety risks of users being exposed to electromagnetic radiation.

[0089] In some embodiments, the low electromagnetic radiation mode includes at least two levels, and the control method further includes: after the first level of the low electromagnetic radiation mode is activated, controlling the electrical appliances to operate at the second power. After the second level of the low electromagnetic radiation mode is activated, controlling the electrical appliances to operate at a third power that is less than the second power. To meet the low electromagnetic radiation needs of people with different sensitivities to electromagnetic radiation, embodiments of the present application propose differentiating the low electromagnetic radiation mode into different levels, allowing users to activate the corresponding level based on their needs. For example, the low electromagnetic radiation mode can be divided into two levels. The user can activate the first level when the vehicle's occupants include elderly people, infants, or pregnant women, limiting the vehicle's electrical appliances to operate at the second power. The user can also activate the second level when the vehicle's occupants include patients, limiting the vehicle's electrical appliances to operate at an even lower third power. Exemplarily, in the first level, the output power of the wireless charging panel 45 is less than or equal to 20 watts (W), and in the second level, the output power of the wireless charging panel 45 is 5 W. Exemplarily, in the first level, the steering wheel heater 46 is adjusted to the lowest level, and in the second level, the steering wheel heater 46 is disabled. It is easy to understand that the low electromagnetic radiation mode can be divided into more gears, allowing users to more flexibly select the corresponding gear according to their own needs. In the implementation of the embodiment of the present application, the vehicle's low electromagnetic radiation mode can include multiple gears corresponding to different power levels of the vehicle's electrical appliances, allowing users to activate the corresponding gear according to their own needs, which is conducive to improving the practicality of the low electromagnetic radiation mode and further reducing the safety risks of users being exposed to electromagnetic radiation.

[0090] In some embodiments, the control method further includes: when the vehicle speed at the time the low electromagnetic radiation mode is triggered is less than a preset speed, after the low electromagnetic radiation mode is activated, first controlling the powertrain to operate at the second power, and then controlling the low-voltage electrical components to operate at the second power. When the vehicle speed at the time the low electromagnetic radiation mode is triggered is greater than the preset speed, after the low electromagnetic radiation mode is activated, first controlling the low-voltage electrical components to operate at the second power, and then controlling the powertrain to operate at the second power. When the vehicle speed is less than the preset speed, it can be understood that the vehicle is in a low-speed driving state. When the low electromagnetic radiation mode is triggered while the vehicle is in a low-speed driving state, since the demand for powertrain output power is low, the powertrain can be first limited to reduce the vehicle's electromagnetic radiation intensity, and then the power of the low-voltage electrical components can be limited to further reduce the electromagnetic radiation intensity. Optionally, after limiting the powertrain output power, it is necessary to determine whether to control the low-voltage electrical components to operate at the second power based on whether the electromagnetic radiation intensity in the cabin is greater than a radiation intensity threshold. Specifically, after limiting the output power of the powertrain, if the electromagnetic radiation intensity in the cabin (for example, the electromagnetic radiation intensity at any seat) is still greater than the radiation intensity threshold, the power of the low-voltage electrical components will be limited. In this way, the electromagnetic radiation intensity and the user's comfort experience can be taken into account in the low-speed driving state. Similarly, when the vehicle speed is greater than the preset speed, it can be understood that the vehicle has left the low-speed driving state. When the low electromagnetic radiation mode is triggered when the vehicle is not in the low-speed driving state, since the demand for the powertrain output power is relatively higher at this time, the electromagnetic radiation intensity of the vehicle can be reduced by the power of the low-voltage electrical components first, and then the electromagnetic radiation intensity of the vehicle can be reduced by the braking force. By implementing the embodiment of the present application, the order of controlling the vehicle's electrical appliances to reduce power is determined by combining the vehicle speed when the low electromagnetic radiation mode is triggered, which can ensure that the comfort experience brought to the user by the low-voltage electrical components is taken into account while meeting the vehicle's power requirements, thereby further improving the practicality of the low electromagnetic radiation mode.

[0091] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A control method for reducing vehicle electromagnetic radiation, characterized in that: The control method is used to control a vehicle to reduce electromagnetic radiation generated by the vehicle after the low electromagnetic radiation mode is activated, and the control method includes: During operation of the vehicle, before detecting that the low electromagnetic radiation mode is triggered, controlling the electrical appliances of the vehicle to operate at a first power; After detecting that the low electromagnetic radiation mode is triggered, controlling the display screen of the vehicle to display an indication mark, wherein the indication mark is used to instruct the vehicle to enable the low electromagnetic radiation mode; After the low electromagnetic radiation mode is enabled, controlling the electrical appliance of the vehicle to operate at a second power that is less than the first power; The electrical consumers include at least one of a powertrain, a braking system or low-voltage electrical components of the vehicle.

2. The control method according to claim 1, characterized in that: After detecting that the low electromagnetic radiation mode is triggered, controlling the display screen of the vehicle to display the indication mark specifically includes: After detecting that the passengers of the vehicle include at least one of an elderly person, an infant or a pregnant woman, the display screen of the vehicle is controlled to display the indication mark.

3. The control method according to claim 2, characterized in that: The control method further includes: After detecting that the vehicle's passengers include at least one of the elderly, infants, or pregnant women and the vehicle's longitudinal acceleration is greater than a preset longitudinal acceleration, the vehicle's voice reminder system is controlled to output a voice message to the inside of the vehicle to prompt the user to enable the low electromagnetic radiation mode.

4. The control method according to any one of claims 1 to 3, characterized in that: After detecting that the low electromagnetic radiation mode is triggered, controlling the display screen of the vehicle to display an indication mark specifically includes: During the charging process of the power battery of the vehicle, it is detected that there is a passenger in the cabin of the vehicle, and the display screen of the vehicle is controlled to display the indication mark.

5. The control method according to any one of claims 1 to 4, characterized in that: After detecting that the low electromagnetic radiation mode is triggered, controlling the display screen of the vehicle to display an indication mark specifically includes: When the vehicle is traveling in at least one of a school, a hospital, or a kindergarten, the display screen of the vehicle is controlled to display the indication mark.

6. The control method according to any one of claims 1 to 5, characterized in that: After detecting that the low electromagnetic radiation mode is triggered, controlling the display screen of the vehicle to display the indication mark further includes: In response to touching the display screen of the vehicle, or pressing the radiation control button of the vehicle, or voice instruction to enable the low electromagnetic radiation mode, the display screen of the vehicle is controlled to display the indication mark.

7. The control method according to any one of claims 1 to 6, characterized in that: The low-voltage electrical components include one or more of a smart wiper, a seat, and an air conditioner, and controlling the electrical components of the vehicle to operate at a second power that is less than the first power specifically includes: Controlling the gear position of the intelligent wiper to be in automatic adjustment mode; or inhibiting adjustment of the seat position when the seat is loaded; or When the command request temperature of the air conditioner is not within a temperature range obtained by adding or subtracting a preset temperature from the cabin temperature of the vehicle, controlling the actual operating temperature of the air conditioner to be within the temperature range; or When the rotation speed of the air outlet fan of the air conditioner is greater than a preset fan rotation speed value, the rotation speed of the air outlet fan is controlled to be less than or equal to the preset fan rotation speed value.

8. The control method according to claim 7, characterized in that: The low-voltage electrical components further include a wireless charging panel and a steering wheel heating device, and the controlling the electrical appliances of the vehicle to operate at a second power lower than the first power further includes: Controlling the output power of the wireless charging panel of the vehicle to be less than a preset power; or disabling adjustment of the seat heating level when weight is borne on the seat; or A gear adjustment of a steering wheel heating device of the vehicle is prohibited.

9. The control method according to any one of claims 1 to 8, characterized in that: The vehicle further includes an onboard charger configured to receive alternating current (AC) and output direct current (DC) to a power battery of the vehicle to charge the power battery. After the low electromagnetic radiation mode is enabled, the control method further includes: In response to the direct current being greater than a preset current value, the power switch tube of the power module in the on-board charger is controlled to reduce the switching frequency to a preset switching frequency value. The preset current value is used to indicate that the electromagnetic radiation intensity of the on-board charger exceeds the preset electromagnetic radiation intensity value.

10. The control method according to any one of claims 1 to 9, characterized in that: The powertrain includes a motor controller and a drive motor, wherein the motor controller is configured to receive direct current (DC) power and output alternating current (AC) power to drive the drive motor. After the low electromagnetic radiation mode is enabled, the control method further includes: When the opening degree of the accelerator pedal of the vehicle is less than a first opening degree or the increasing rate of the opening degree of the accelerator pedal is less than a first preset change rate, the frequency of the power switch tube of the power conversion module in the motor controller is controlled to be less than a preset switching frequency value; When the opening of the accelerator pedal of the vehicle is greater than a first opening and the increasing rate of the accelerator pedal opening is greater than a first preset change rate, the frequency of the power switch tube of the power conversion module in the motor controller is greater than a preset switching frequency value.

11. The control method according to any one of claims 1 to 10, characterized in that: The low electromagnetic radiation mode includes at least two gears, and the control method further includes: After the first gear of the low electromagnetic radiation mode is activated, controlling the electrical appliance to operate at the second power; After the second gear of the low electromagnetic radiation mode is activated, the electrical appliance is controlled to operate at a third power that is smaller than the second power.

12. The control method according to any one of claims 1 to 11, characterized in that: The control method further includes: after the low electromagnetic radiation mode is enabled, controlling the display screen of the vehicle to display the duration of operation of the low electromagnetic radiation mode.

13. The control method according to any one of claims 1 to 12, characterized in that: The control method further includes: When the vehicle speed is less than a preset speed when the low electromagnetic radiation mode is triggered, after the low electromagnetic radiation mode is activated, firstly controlling the powertrain to operate at the second power, and then controlling the low-voltage electrical components to operate at the second power; When the vehicle speed is greater than a preset speed when the low electromagnetic radiation mode is triggered, after the low electromagnetic radiation mode is enabled, the low-voltage electrical components are first controlled to operate at the second power, and then the powertrain is controlled to operate at the second power.

14. A controller, characterized in that: The controller is configured to execute the control method according to any one of claims 1 to 13.

15. A vehicle, characterized in that: The vehicle includes a powertrain, a braking system, low-voltage electrical devices and a controller as described in claim 14, wherein the controller is used to reduce the power of at least one of the powertrain, braking system and low-voltage electrical devices when the low electromagnetic radiation mode of the vehicle is enabled.

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