CN117184053A - Whole vehicle control system and method for preventing reverse gear false acceleration of electric vehicle - Google Patents
Whole vehicle control system and method for preventing reverse gear false acceleration of electric vehicle Download PDFInfo
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Abstract
The invention provides a whole vehicle control system and method for preventing reverse gear false acceleration of an electric vehicle, and relates to the technical field of intelligent control of vehicles. The system comprises a main controller, a first control unit and a second control unit, wherein the main controller is used for acquiring information of an accelerator pedal, a brake pedal and a gear shifting mechanism of a vehicle, acquiring real-time distance between a tail and an obstacle during reverse gear, and responding to a request of the accelerator pedal when the vehicle is located outside a first braking distance; when the vehicle is within a first braking distance, responding to a request of an accelerator pedal, and controlling the vehicle speed to be below a first set speed value; responding only to a brake pedal request when the vehicle is within a second braking distance; wherein the second braking distance is closer to the obstacle than the first braking distance; and the vehicle body controller is used for measuring the real-time distance between the vehicle tail and the obstacle. The invention recognizes the reversing acceleration intention of the driver, actively adjusts the vehicle speed according to the current vehicle speed and the rear obstacle distance, and stops the vehicle when necessary so as to ensure the safety of the driver and the vehicle.
Description
Technical Field
The invention belongs to the technical field of intelligent control of automobiles, and particularly relates to a whole automobile control system and method for preventing reverse gear false acceleration of an electric automobile.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
When many novice drivers use reverse gear, because tension or unskilled operation, the throttle is used as a brake by mistake, so that the vehicle is undesirably accelerated, and if the vehicle is nearer to an obstacle or a person at the moment, serious consequences are caused, and the vehicle is damaged or the person is injured; meanwhile, the faster the speed is, the more the driver is stressed, the more the accelerator is stepped on, the more violent the acceleration is, and finally, the traffic accident is caused. In addition, some novice drivers have inaccurate sensing of the distance between vehicles, inaccurate distance grasping during garage-reversing parking, and possibility of collision with some objects, so that accidents occur.
The inventor finds that in the prior art, a technical means for displaying a reversing image on an in-vehicle display screen and assisting a driver in reversing operation by utilizing a reversing radar exists, but the technical means are greatly influenced by human factors, and meanwhile, for a novice driver with poor steering feel, the driving direction of the steering wheel can be correspondingly changed when the driver uses the reversing gear, the steering wheel is unskilled in control direction when the driver reverses the gear, the emotion is tense, and the randomness of the road environment, the darker light of the garage position and the poor visibility exist for the reasons, so that the safety of the vehicle and the driver cannot be completely ensured even if the reversing radar and the reversing image exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a vehicle control system and a method for preventing reverse gear and false acceleration of an electric vehicle, wherein the vehicle recognizes the reversing acceleration intention of a driver, and according to the current vehicle speed and the rear obstacle distance, the safe driver intention is screened, the vehicle speed is actively regulated, and the vehicle is stopped when necessary, so that the safety of the driver and the vehicle is ensured.
To achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
the first aspect of the invention provides a vehicle control system for an electric vehicle, which is used for preventing reverse gear false acceleration.
An electric automobile prevents whole car control system of reverse gear mistake acceleration, includes:
the main controller is used for collecting information of a vehicle accelerator pedal, a brake pedal and a gear shifting mechanism, pre-storing a first braking distance and a second braking distance, acquiring a real-time distance between a vehicle tail and an obstacle when the gear shifting mechanism information is reverse gear, and judging the position of the vehicle:
responding to requests of an accelerator pedal and a brake pedal when the vehicle is located outside a first braking distance;
when the vehicle is within a first braking distance, responding to requests of an accelerator pedal and a brake pedal, and simultaneously controlling the vehicle speed to be below a first set speed value;
when the vehicle is within the second braking distance, the vehicle does not respond to the accelerator pedal request and only responds to the brake pedal request; wherein the second braking distance is closer to the obstacle than the first braking distance;
and the vehicle body controller is connected with the main controller and is used for measuring the real-time distance between the vehicle tail and the obstacle.
The second aspect of the invention provides a vehicle control method for preventing reverse gear false acceleration of an electric vehicle.
A whole vehicle control method for preventing reverse gear false acceleration of an electric vehicle comprises the following steps:
the vehicle body controller measures the real-time distance between the vehicle tail and the obstacle and sends the real-time distance between the vehicle tail and the obstacle to the main controller;
the method comprises the steps that a main controller collects information of a vehicle accelerator pedal, a brake pedal and a gear shifting mechanism, a first braking distance and a second braking distance are prestored, when the gear shifting mechanism information is in reverse gear, the real-time distance between a vehicle tail and an obstacle is obtained, and the position of the vehicle is judged:
responding to requests of an accelerator pedal and a brake pedal when the vehicle is located outside a first braking distance;
when the vehicle is within a first braking distance, responding to requests of an accelerator pedal and a brake pedal, and simultaneously controlling the vehicle speed to be below a first set speed value;
when the vehicle is within the second braking distance, the vehicle does not respond to the accelerator pedal request and only responds to the brake pedal request; wherein the second stopping distance is closer to the obstacle than the first stopping distance.
The one or more of the above technical solutions have the following beneficial effects:
the invention provides a vehicle control system and a method for preventing reverse gear false acceleration of an electric vehicle, wherein when the vehicle recognizes the reversing acceleration intention of a driver, the vehicle speed is actively regulated according to the current vehicle speed and the distance between the vehicle tail and a rear obstacle, and the vehicle is braked when necessary, so that the safety of the driver and the vehicle is ensured, the false acceleration during reversing is better prevented, and the safety during reversing of the electric vehicle is ensured.
Compared with the technical scheme of reversing image and reversing radar auxiliary reversing distance control in the prior art, the invention can integrally improve the safety during reversing, reduce the subjectivity of manual control, has better market application value, and is very suitable for drivers with novice drivers and drivers with poor steering sense and distance sense control.
The method acquires the real-time distance between the tail and the obstacle, and judges the position of the vehicle based on the prestored first braking distance and the prestored second braking distance, so that a control strategy is set in a targeted mode when the vehicle is positioned at different positions, and the acceleration control of the vehicle can be performed in response to the request of the accelerator pedal outside the first braking distance far away from the obstacle; after reaching the first braking distance, responding to the request of the accelerator pedal, and controlling the vehicle speed at the moment so that the vehicle speed is below a more reasonable speed value; after the second braking distance is reached, the accelerator pedal request is not responded any more, and only the brake pedal request is responded, so that the safety is improved.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a system configuration diagram of a first embodiment.
Fig. 2 is a schematic diagram of a distance division between a vehicle tail and an obstacle according to the first embodiment.
Fig. 3 is a flow chart of a second embodiment control strategy.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention.
Embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Example 1
The embodiment discloses a whole vehicle control system for an electric vehicle, which is used for preventing reverse gear false acceleration.
As shown in fig. 1 and 2, a vehicle control system for preventing reverse gear false acceleration of an electric vehicle includes:
the main controller is used for collecting information of a vehicle accelerator pedal, a brake pedal and a gear shifting mechanism, pre-storing a first braking distance and a second braking distance, acquiring a real-time distance between a vehicle tail and an obstacle when the gear shifting mechanism information is reverse gear, and judging the position of the vehicle:
responding to requests of an accelerator pedal and a brake pedal when the vehicle is located outside a first braking distance;
when the vehicle is within a first braking distance, responding to requests of an accelerator pedal and a brake pedal, and simultaneously controlling the vehicle speed to be below a first set speed value;
when the vehicle is within the second braking distance, the vehicle does not respond to the accelerator pedal request and only responds to the brake pedal request; wherein the second braking distance is closer to the obstacle than the first braking distance;
and the vehicle body controller is connected with the main controller and is used for measuring the real-time distance between the vehicle tail and the obstacle.
In order to better prevent the false acceleration during reversing and guarantee the safety of the electric automobile during reversing, the false acceleration preventing function (which can be opened or closed through a large screen soft switch) developed by the embodiment mainly comprises:
at the first braking distance S of the vehicle 1 When the speed limit is within 20km/h, namely the value of the first set speed value is 20km/h in the embodiment;
in addition, when the vehicle is located at the second braking distance S 2 And when the vehicle is in a certain distance from the obstacle to be collided in the reverse direction, actively decelerating the vehicle until the vehicle is stopped.
The occurrence of false acceleration during reversing is improved in an active control mode, and the safety during reversing is improved.
Specific:
the main controller is also used for collecting and judging whether the real-time vehicle speed is below a first set speed value when the vehicle is located within a first braking distance:
if yes, calculating the torque requested by an accelerator pedal, requesting the motor driving torque, and controlling the vehicle to accelerate;
when the vehicle speed is judged to be accelerated to a first set speed value, PI control is carried out according to the difference between the target vehicle speed and the actual vehicle speed corresponding to the torque requested by the accelerator pedal, and the motor driving torque is regulated to enable the vehicle to be kept at the first set speed value.
Further, the main controller is also used for dividing the second braking distance into a first limit distance S 21 Second limit distance S 22 And a third polar distance S 23 Judging whether the vehicle enters the first limit distance S at a speed higher than the second set speed value 21 Second limit distance S 22 Or a third limit distance S 23 And judging the opening degree of the brake pedal at the same time:
if the vehicle enters at a speed higher than a second set speed value and the opening of a brake pedal is zero, acquiring a real-time distance between the tail of the vehicle and an obstacle at the moment, calculating the deceleration required by braking the vehicle, converting the total torque of hydraulic braking and energy recovery, and braking the vehicle according to the total torque;
if the vehicle enters at a speed higher than a second set speed value and the opening degree of the brake pedal is non-zero, calculating a brake torque corresponding to the opening degree of the brake pedal, and taking a large value from the total torque and the brake torque to brake the vehicle;
wherein the first limit distance, the second limit distance, and the third limit distance are sequentially closer to the obstacle.
By the method, active deceleration control is performed when the vehicle is within the second braking distance in the reverse gear process of the vehicle, and safety during reverse gear is improved.
Further, the main controller is further used for controlling the reverse gear creeping of the vehicle and sending out voice and wind warning when judging that the vehicle enters the first limit distance, the second limit distance or the stationary starting at a speed lower than the second set speed value.
Further, the main controller is further used for stopping driving the vehicle and sending out voice and wind warning when judging that the vehicle enters a third limit distance or is stationary to start at a speed lower than the second set speed value.
Further, the main controller is further used for calculating braking torque requested by the brake pedal when the vehicle is located within the second braking distance and responds to the brake pedal request, distributing torque of hydraulic braking and energy recovery according to the maximum executable capacity of the battery and the motor, and using the hydraulic braking and the energy recovery to achieve vehicle deceleration.
As shown in fig. 1, the whole vehicle control system for preventing reverse gear false acceleration of the electric vehicle in this embodiment mainly includes:
a vehicle control system (VCU), a Battery Management System (BMS), a high-voltage battery, a motor control Module (MCU), a motor, a vehicle stability system (ESP), an inverter (DC-DC), a body control system (BCM), an Instrument Control Unit (ICU), a large screen control unit (IHU), and an accelerator pedal, a shift mechanism, a brake pedal, etc. of a vehicle.
Wherein:
battery Management System (BMS): is responsible for responding to high-voltage connection and charge-discharge power calculation and sending to VCU;
motor control Module (MCU): the method comprises the steps of collecting the state of a motor in real time, simultaneously responding to a torque command of a VCU, and feeding back information such as actual torque, rotating speed and the like to the VCU;
vehicle stability system (ESP): collecting wheel speed and vehicle speed information, responding to the braking torque requested by the VCU, and controlling the vehicle to decelerate through hydraulic braking;
inverter (DC-DC): collecting output voltage and current and sending the output voltage and current to the VCU;
body control system (BCM): the method is responsible for collecting tail radar information and feeding back the distance of a transmitted obstacle to the VCU;
large screen control unit (IHU): and acquiring the information of the function starting requirement of a driver, and starting or closing the function by utilizing a soft switch and feeding back to the VCU. The large screen control unit (IHU) has the functions of display and voice reminding, and informs a driver according to information fed back by the VCU.
A vehicle control system (VCU) acquires information such as an accelerator pedal, a gear shifting mechanism, a brake pedal and the like of a vehicle to acquire the intention of a driver, and the VCU calculates motor driving torque or energy recovery torque;
the meter control unit (ICU) displays text prompts and emits different prompt tones.
The vehicle control system (VCU) interacts with the controllers through CAN communication, gathers information to identify the reversing acceleration intention of a driver, actively adjusts the vehicle speed according to the current vehicle speed and the rear obstacle distance, and actively requests braking action before collision.
After the vehicle ready, the reverse gear is engaged, and the distance S from the vehicle to the obstacle is the same 1 And S is 2 Two large phases, S 2 The method comprises 3 small stages, logic judgment is carried out, and the control method of the vehicle under different working conditions is as follows:
working condition one: the vehicle is at S 1 Within or farther from
When the vehicle is reversed, S 1 In the distance range or more, the reversing can be accelerated, but the highest speed is limited to 20km/h;
when the accelerator is not stepped in reversing, the vehicle is reversed in a normal creeping way;
when stepping on the accelerator, the VCU collects the opening of the accelerator, calculates the torque requested by the accelerator, requests the motor to execute, and the vehicle can respond to the accelerator request within the range of 20 km/h. When the vehicle accelerates to 20km/h, the accelerator depth is kept to be a larger stroke, and the VCU carries out PI control to adjust the motor driving torque according to the difference between the target vehicle speed and the actual vehicle speed, so that the vehicle is kept near 20 km/h.
Working condition II: at S 2 Within a distance range
When the vehicle is reversed, S 2 Within the distance range, the vehicle is reverse-geared out of the throttle request, the vehicle is slowed down using hydraulic braking and energy recovery, and parking is stopped finally. And at S 21 、S 22 、S 23 And carrying out corresponding text and voice reminding.
Vehicle slave S 1 Enter S 2 When the speed is within the range, the instrument characters remind the driver of 'please step on the brake to reduce the speed'.
2.1: the vehicle is at S 21 Rest and startThe vehicle can reverse gear and creep in 3km/h, the throttle request is not responded, the distance near-speed reduction or the slow wind sound prompt is carried out by voice prompt, and the driver is warned and braked at any time.
Vehicle from high speed into S 21 If the driver does not step on the brake, VCU determines the current speed and the obstacle distance S 21 +S 22 Calculating the deceleration a required by vehicle braking, and converting the total torque of hydraulic braking and energy recovery; and simultaneously, according to the maximum capacity which can be executed by the battery and the motor, distributing the torque of hydraulic braking and energy recovery, and respectively executing by the ESP and the MCU.
If the driver steps on the brake, the VCU calculates the total torque and the brake torque of the function to be larger.
2.2: the vehicle is at S 22 The vehicle can reverse gear and creep in the range of 3km/h, the throttle request is not responded, and the voice prompt is a near-distance deceleration prompt or a medium wind sound prompt, so that the driver is alerted and braked at any time.
Vehicle from high speed into S 22 If the driver does not step on the brake, VCU determines the current speed and the obstacle distance S 22 Calculating the deceleration a required by vehicle braking, and converting the total torque of hydraulic braking and energy recovery; and simultaneously, according to the maximum capacity which can be executed by the battery and the motor, distributing the torque of hydraulic braking and energy recovery, and respectively executing by the ESP and the MCU. When the vehicle is stopped, the EPB is pulled up.
If the driver steps on the brake, the VCU calculates the total torque and the brake torque of the function to be larger. When the vehicle is stopped, the EPB is pulled up.
2.3: the vehicle is at S 23 The vehicle is prohibited from driving, and the driver is alerted and braked by voice reminding of 'please brake immediately' or rapid wind sound reminding.
Vehicle from high speed into S 22 If the driver does not step on the brake, VCU determines the current speed and the obstacle distance S 23 Calculating the deceleration a required by vehicle braking, and converting the total torque of hydraulic braking and energy recovery; at the same time, the torque of hydraulic braking and energy recovery is distributed according to the maximum capacity which can be executed by the battery and the motorExecuted by the ESP and MCU, respectively. When the vehicle is stopped, the EPB is pulled up.
If the driver steps on the brake, the VCU calculates the total torque and the brake torque of the function to be larger. When the vehicle is stopped, the EPB is pulled up.
Example two
The embodiment discloses a whole vehicle control method for preventing reverse gear false acceleration of an electric vehicle.
As shown in fig. 3, a vehicle control method for preventing reverse gear false acceleration of an electric vehicle includes the following steps:
the vehicle body controller measures the real-time distance between the vehicle tail and the obstacle and sends the real-time distance between the vehicle tail and the obstacle to the main controller;
the method comprises the steps that a main controller collects information of a vehicle accelerator pedal, a brake pedal and a gear shifting mechanism, a first braking distance and a second braking distance are prestored, when the gear shifting mechanism information is in reverse gear, the real-time distance between a vehicle tail and an obstacle is obtained, and the position of the vehicle is judged:
responding to requests of an accelerator pedal and a brake pedal when the vehicle is located outside a first braking distance;
when the vehicle is within a first braking distance, responding to requests of an accelerator pedal and a brake pedal, and simultaneously controlling the vehicle speed to be below a first set speed value;
when the vehicle is within the second braking distance, the vehicle does not respond to the accelerator pedal request and only responds to the brake pedal request; wherein the second stopping distance is closer to the obstacle than the first stopping distance.
Further, the main controller divides the second braking distance into a first limit distance, a second limit distance and a third limit distance, judges whether the vehicle enters the first limit distance, the second limit distance or the third limit distance at a vehicle speed higher than a second set speed value, and judges the opening degree of a brake pedal at the same time:
if the vehicle enters at a speed higher than a second set speed value and the opening of a brake pedal is zero, acquiring a real-time distance between the tail of the vehicle and an obstacle at the moment, calculating the deceleration required by braking the vehicle, converting the total torque of hydraulic braking and energy recovery, and braking the vehicle according to the total torque;
if the vehicle enters at a speed higher than a second set speed value and the opening degree of the brake pedal is non-zero, calculating a brake torque corresponding to the opening degree of the brake pedal, and taking a large value from the total torque and the brake torque to brake the vehicle;
wherein the first limit distance, the second limit distance, and the third limit distance are sequentially closer to the obstacle.
When the vehicle is judged to enter the first limit distance, the second limit distance or the stationary starting at a speed lower than the second set speed value, controlling the reverse gear creeping of the vehicle, and sending out voice and wind-ringing reminding;
and stopping driving the vehicle and sending out voice and whistle reminding when judging that the vehicle enters a third limit distance or is stationary to start at a speed lower than the second set speed value.
The main controller is also used for calculating the braking torque requested by the brake pedal when the vehicle is positioned within the second braking distance and responds to the brake pedal request, distributing the torque of hydraulic braking and energy recovery according to the maximum executable capacity of the battery and the motor, and realizing vehicle deceleration by using the hydraulic braking and the energy recovery.
As shown in fig. 3, the vehicle is reversed at S 1 In the stage, the vehicle can normally respond to acceleration request by reversing gear, but the speed limit is 20km/h; reversing in S 2 During the phase, the vehicle is reversed and the throttle request is withdrawn, and the hydraulic braking and energy recovery are used to slow down the vehicle. And at S 21 、S 22 、S 23 And carrying out corresponding text and voice reminding. By combining the technical scheme, the safety during reversing is improved on the whole.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented by general-purpose computer means, alternatively they may be implemented by program code executable by computing means, whereby they may be stored in storage means for execution by computing means, or they may be made into individual integrated circuit modules separately, or a plurality of modules or steps in them may be made into a single integrated circuit module. The present invention is not limited to any specific combination of hardware and software.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (10)
1. An electric automobile prevents whole car control system of reverse gear mistake acceleration, characterized by comprising:
the main controller is used for collecting information of a vehicle accelerator pedal, a brake pedal and a gear shifting mechanism, pre-storing a first braking distance and a second braking distance, acquiring a real-time distance between a vehicle tail and an obstacle when the gear shifting mechanism information is reverse gear, and judging the position of the vehicle:
responding to requests of an accelerator pedal and a brake pedal when the vehicle is located outside a first braking distance;
when the vehicle is within a first braking distance, responding to requests of an accelerator pedal and a brake pedal, and simultaneously controlling the vehicle speed to be below a first set speed value;
when the vehicle is within the second braking distance, the vehicle does not respond to the accelerator pedal request and only responds to the brake pedal request; wherein the second braking distance is closer to the obstacle than the first braking distance;
and the vehicle body controller is connected with the main controller and is used for measuring the real-time distance between the vehicle tail and the obstacle.
2. The electric vehicle control system for preventing reverse gear false acceleration of claim 1, wherein the main controller is further configured to collect and determine whether the real-time vehicle speed is below a first set speed value when the vehicle is within a first braking distance:
if yes, calculating the torque requested by an accelerator pedal, requesting the motor driving torque, and controlling the vehicle to accelerate;
when the vehicle speed is judged to be accelerated to a first set speed value, PI control is carried out according to the difference between the target vehicle speed and the actual vehicle speed corresponding to the torque requested by the accelerator pedal, and the motor driving torque is regulated to enable the vehicle to be kept at the first set speed value.
3. The electric vehicle control system for preventing reverse gear false acceleration according to claim 1, wherein the main controller is further configured to divide the second braking distance into a first limit distance, a second limit distance, and a third limit distance, determine whether the vehicle enters the first limit distance, the second limit distance, or the third limit distance at a vehicle speed higher than a second set speed value, and determine a brake pedal opening:
if the vehicle enters at a speed higher than a second set speed value and the opening of a brake pedal is zero, acquiring a real-time distance between the tail of the vehicle and an obstacle at the moment, calculating the deceleration required by braking the vehicle, converting the total torque of hydraulic braking and energy recovery, and braking the vehicle according to the total torque;
if the vehicle enters at a speed higher than a second set speed value and the opening degree of the brake pedal is non-zero, calculating a brake torque corresponding to the opening degree of the brake pedal, and taking a large value from the total torque and the brake torque to brake the vehicle;
wherein the first limit distance, the second limit distance, and the third limit distance are sequentially closer to the obstacle.
4. The electric vehicle control system for preventing reverse gear false acceleration of claim 3, wherein the main controller is further configured to control reverse gear creep of the vehicle and to issue a voice and a wind alert when it is determined that the vehicle enters the first limit distance, the second limit distance, or the stationary start at a speed lower than the second set speed value.
5. The system of claim 4, wherein the main controller is further configured to stop driving the vehicle and generate a voice and a whistle alert when it is determined that the vehicle is entering the third limit distance or stationary start at a speed lower than the second set speed.
6. The electric vehicle reverse gear false acceleration prevention whole vehicle control system according to claim 3, wherein the main controller is further configured to calculate a brake torque requested by a brake pedal when the vehicle is within a second braking distance in response to the brake pedal request, distribute torque of hydraulic braking and energy recovery according to the maximum capacity that can be executed by the battery and the motor, and achieve vehicle deceleration using the hydraulic braking and the energy recovery.
7. The electric vehicle control system for preventing reverse false acceleration of an electric vehicle of claim 6, further comprising:
the vehicle stabilizing system is connected with the main controller and used for collecting wheel speed and vehicle speed information, responding to the braking torque requested by the main controller and controlling the vehicle to decelerate through hydraulic braking;
and the motor controller is connected with the main controller and responds to the motor driving torque or the energy recovery torque requested by the main controller to control the acceleration or the deceleration of the vehicle.
8. The electric vehicle control system for preventing reverse false acceleration of an electric vehicle of claim 7, further comprising:
the battery management system is connected with the main controller and is used for responding to the high-voltage connection of the power battery and the calculation of the charge and discharge power;
the inverter is connected with the main controller and used for collecting the output voltage and current of the power battery;
and the large screen control unit is connected with the main controller and used for collecting information on the opening or closing function requirement of a driver.
9. The system for controlling the electric automobile to prevent reverse gear false acceleration according to claim 8, wherein the main controller is in information interaction with the automobile body controller, the automobile stabilizing system, the motor controller, the battery management system, the inverter and the large screen control unit respectively through CAN communication.
10. A whole vehicle control method for preventing reverse gear false acceleration of an electric vehicle is characterized by comprising the following steps of: the method comprises the following steps:
the vehicle body controller measures the real-time distance between the vehicle tail and the obstacle and sends the real-time distance between the vehicle tail and the obstacle to the main controller;
the method comprises the steps that a main controller collects information of a vehicle accelerator pedal, a brake pedal and a gear shifting mechanism, a first braking distance and a second braking distance are prestored, when the gear shifting mechanism information is in reverse gear, the real-time distance between a vehicle tail and an obstacle is obtained, and the position of the vehicle is judged:
responding to requests of an accelerator pedal and a brake pedal when the vehicle is located outside a first braking distance;
when the vehicle is within a first braking distance, responding to requests of an accelerator pedal and a brake pedal, and simultaneously controlling the vehicle speed to be below a first set speed value;
when the vehicle is within the second braking distance, the vehicle does not respond to the accelerator pedal request and only responds to the brake pedal request; wherein the second stopping distance is closer to the obstacle than the first stopping distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311315114.0A CN117184053A (en) | 2023-10-10 | 2023-10-10 | Whole vehicle control system and method for preventing reverse gear false acceleration of electric vehicle |
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| CN202311315114.0A CN117184053A (en) | 2023-10-10 | 2023-10-10 | Whole vehicle control system and method for preventing reverse gear false acceleration of electric vehicle |
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| CN202311315114.0A Pending CN117184053A (en) | 2023-10-10 | 2023-10-10 | Whole vehicle control system and method for preventing reverse gear false acceleration of electric vehicle |
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- 2023-10-10 CN CN202311315114.0A patent/CN117184053A/en active Pending
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