48results about How to "Guaranteed driving experience" patented technology

The invention provides a temperature control method and device of an electric car drive motor and an electric car. The method comprises following steps: monitoring the temperature of a drive motor ofan electric car after power on; when the temperature of the drive motor is greater than a first preset temperature threshold value and less than or equal to a second preset temperature threshold value, determining the limit torque of the drive motor according to the current performance parameters of a cooling system of the electric car and the current temperature of the drive motor; the first preset temperature threshold value is the maximum temperature at which the drive motor can operate normally over the rated power range; the second preset temperature threshold value is the critical temperature value at which the drive system of the electric car is at risk of failure; the cooling system performance parameters represent the cooling effectiveness of an electric car cooling system under maximum cooling capability conditions. The invention can effectively prevent the temperature of the drive motor from further rising, and at the same time can minimize the restriction on the torque output of the drive motor, thus ensuring the driving feeling of the driver.

The invention discloses an automatic parking system, which belongs to the field of automobile control. According to the automatic parking system, a plurality of infrared wide angle cameras are arranged on an automobile, and image information around the automobile can be clearly collected, so that when automatic parking is carried out, a comprehensive parking path plan can be made according to distance data between the automobile and surrounding obstacles and the image information around the automobile, which are respectively collected by ultrasonic radar and the infrared wide angle cameras, the defect that unrecognized obstacles are contained in the obtained parking path since radar has blind points for measuring the distance when only the radar is used for measuring the distance between the automobile and the surrounding obstacles is avoided, the occurrence of the phenomenon that the automobile and the obstacles in the parking path are collided and scratched when the automobile is automatically parked through the generated parking path is reduced as much as possible, and the automobile driving feeling of automobile drivers is ensured.

The invention discloses an electric vehicle, as well as a method and device for estimating the sea level elevation of environment around the electric vehicle. The electric vehicle comprises a braking booster system, wherein the braking booster system comprises a vacuum pump for extracting air in the braking booster system to provide vacuum degree in the braking booster system. The method comprises the following steps of judging whether the vacuum pump is under working state or not, judging whether a braking pedal signal of the electric vehicle is received or not, and judging whether the vacuum pump breaks down or not; and if the vacuum pump is under the working state, the braking pedal signal of the electric vehicle is not received and the vacuum pump does not break down, according to the relationship between the vacuum degree in the braking booster system and time, estimating environmental pressure of the environment in which the electric vehicle is positioned, and according to the environmental pressure, calculating the sea level elevation of the environment in which the electric vehicle is positioned. According to the method disclosed by the invention, the calculation of the sea level elevation is realized when a manometer does not exist or breaks down, and the driving feeling of a driver and the riding feeling of a passenger are guaranteed.

The invention discloses a control method and device for output torque of a motor and a whole vehicle controller, and relates to the technical field of electric automobiles. The control method and device and the while vehicle controller aim to achieve the purpose that when a driver steps on a brake pedal of an electric automobile at first and steps on an accelerator pedal of the electric automobilewhile keeping stepping on the brake pedal, the motor is requested to output a torque value meeting the true demand of the driver. The method comprises the following steps that when the whole vehiclecontroller collects a brake pedal treading signal and collects an accelerator pedal treading signal while keeping the collected brake pedal treading signal, the whole vehicle controller acquires the current vehicle speed of the electric automobile and the treading depth of the accelerator pedal; the whole vehicle controller determines the first demand torque corresponding to the electric automobile according to the current vehicle speed and the treading depth; and when the first demand torque is the negative torque, the whole vehicle controller requests the motor to output the first demand torque. The method, the device and the whole vehicle controller are suitable for the process that the whole vehicle controller requests the motor to output the torque value meeting the requirement of thedriver.

The invention discloses a method, device and equipment for controlling engine torque and a storage medium. The method includes the steps that vehicle state information is obtained in real time and includes brake information, accelerator pedal opening degree, engine torque limit and actual engine torque; whether a vehicle is braked or not, whether the accelerator pedal opening degree is not lower than the preset opening degree value or not and whether the actual engine torque is greater than the engine torque limit or not are judged; when the vehicle is not braked, the accelerator pedal openingdegree is not lower than the preset opening degree value and the actual engine torque is greater than the engine torque limit, an engine is controlled to increase the preset torque; and until the actual engine torque is not greater than the engine torque limit and lasts for first preset time, the engine is controlled to exit the preset torque. When the actual engine torque is too high, quick response of engine torque is maintained to keep the actual engine torque closely following the engine torque limit, and thus the safety of hardware is ensured.

The invention discloses a pure electric vehicle mode recognition and control method and device. The method comprises the steps of obtaining the current driving mode of a vehicle; obtaining facial information of a current user, matching user information in a vehicle-mounted database according to the facial information, and confirming driving information of the current user; obtaining the optimal grade of the energy recovery grade used by the current user in the current driving mode, and adjusting the energy recovery grade of the braking energy recovery system to the optimal grade; and broadcasting the driving mode and the energy recovery level used by the vehicle to the current user, and displaying the driving mode and the energy recovery level on the interactive screen. According to the method, the user information and the driving information are automatically matched through face recognition, and after different driving modes and energy recovery intensity levels of the vehicle are recognized through the VCU, the corresponding power type is automatically matched to the current user, so that friendly driving experience is brought to drivers and passengers.

The invention provides a user intention positioning method and device based on aggregated resources, and relates to the technical field of vehicle communication, and the method comprises the steps: obtaining an operation instruction for a current user of the aggregated resources, and enabling the aggregated resources to comprise a plurality of content resources; determining a plurality of alternative user intentions corresponding to the operation instruction and weight values of the plurality of alternative user intentions according to historical data, the historical data comprising intentionstatistical data of the historical operation instruction of the current user for the plurality of content resources and/or intention statistical data of the operation instruction of the historical user for the plurality of content resources; selecting the user intention with the highest weight value from the alternative user intentions as a target user intention; sending the target user intentionto a vehicle-mounted control terminal, so that the vehicle-mounted control terminal executes corresponding operation on content resources corresponding to the target user intention; the user intentionis accurately recognized according to the historical data of the aggregated resources, and the user driving experience is improved.

The invention discloses a rear-drive series hybrid power driving system, belonging to the technical field of hybrid power automobile driving system structures. The rear-drive series hybrid power driving system is mainly used for solving the problem of excessive oil consumption when a traditional hybrid power automobile runs at a high speed. According to the main structure of the system, a speed increaser comprises a speed increaser input gear, a speed increaser intermediate gear and a speed increaser output gear; the speed increaser input gear, the speed increaser intermediate gear and the speed increaser output gear are in meshed transmission connection; the axis of the speed increaser intermediate gear is further in intermittent transmission connection with the input end of a transmission shaft through a direct-drive shaft system; a motor controller is connected with a vehicle control unit; and the vehicle control unit is further connected with a battery and the direct-drive shaft system. According to the rear-drive series hybrid power driving system, by arranging the direct-drive shaft system, an engine can be directly connected with the transmission shaft when necessary so as to participate in driving of an automobile and lower oil consumption.

The invention discloses a driver abnormal state detection method based on image and voice recognition. The method comprises the steps that 1, the state of a driver is monitored in real time through an image module and analyzed; 2, voice interaction with a driver is carried out through an interaction module, the voice state of the driver is collected, a voice system can randomly extract a group of short dialogues from a voice library to interact with the driver, 3, voice information of the driver is analyzed through a voice analysis module, the state of the driver is judged, and 4, warning is carried out through a warning module. According to the method, the driving state of the driver can be monitored in real time, and traffic safety accidents caused by abnormity of the driver can be effectively reduced.

The invention provides a power-on control method and device for a low-voltage storage battery of an electric automobile and the electric automobile, and relates to the field of power-on processing ofthe low-voltage storage battery of the electric automobile. The power-on control method for the low-voltage storage battery of the electric automobile comprises the steps: obtaining a performance reduction judgment result of a previous power-on period of a current power-on period of the low-voltage storage battery and the awakening frequency Ni of a controller in the power-on process of the low-voltage storage battery; determining a low-voltage power-on mode of the current power-on period of the low-voltage storage battery according to the performance reduction judgment result and the wake-upfrequency Ni; and obtaining a performance reduction judgment result of the low-voltage storage battery in the current power-on period when the low-voltage storage battery is powered on according to the low-voltage power-on mode and the awakening frequency of the controller. According to the embodiment of the invention, the stability and stationarity of the output voltage in the power-on process ofthe low-voltage storage battery are ensured by detecting the performance degradation of the storage battery and awakening the controller by stages, and the driving feeling is ensured.

The invention provides an intelligent control method and device for low-speed alarm sound of an automobile, and belongs to the technical field of automobiles. The invention solves the problem that an existing low-speed alarm sound cannot meet the driving experience of a user. The intelligent control method for the low-speed alarm sound of the automobile comprises the following steps: when the method judges that the current position of the automobile is an interest point area and judges that the current interest point area is a crowded place, judging whether a first low-speed alarm condition is met or not according to the current driving speed of the automobile; if the method judges that the current position is a non-interest point area or the interest point area is a non-crowded place, judging whether a second low-speed alarm condition is met or not according to the current driving speed of the vehicle and information of pedestrians and non-motor vehicles around the vehicle; when a second low-speed alarm condition is met, turning on a low-speed alarm sound system and sending out sound for reminding; and if not, turning off the low-speed alarm sound system. According to the invention, the low-speed alarm sound can be automatically turned on and off, and the driving somatosensory and safety of a user are improved.