Method and system for preventing `electric automobile from slope slipping
A technology for electric vehicles and slopes, which is applied to vehicle components, input parameters of external conditions, control devices, etc., can solve problems such as the inability to accurately realize the function of preventing slopes, and achieve the effect of preventing slopes of electric vehicles.
Inactive Publication Date: 2014-05-14
CHINA YOUNG MAN AUTOMOBILE GRP PASSENGER CAR GRP CO LTDA
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Problems solved by technology
[0008] The solution of the present invention is that the system / method for preventing electric vehicles from sliding can not accurately realize the function of preventing slopes, and further provides a method of preventing electric vehicles from sliding by obtaining the driving torque for preventing slopes according to the target speed of electric vehicles. method and system
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[0044] The method for preventing electric vehicles from sliding down described in this embodiment combines Figure 1 to Figure 3 The flow chart shown includes the following steps:
[0045] S1. Judging whether the state of the electric vehicle needs to start the anti-slope mode, including the following steps:
[0046] 1a. The vehicle controller judges the current gear state of the electric vehicle. If it is a driving gear, enter the next step of judgment, otherwise repeat this step;
[0047] Among them, the driving gear includes two situations, one is the forward gear, and the other is the reverse gear; that is, it is possible that the state of the electric vehicle on the slope is that the front of the car is facing the uphill direction, and the driving gear is the forward gear. If the car is going downhill at this time, it means that the phenomenon of sliding occurs; or the state of the electric car on the slope is that the front of the car is facing downhill, and the drivin...
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The invention relates to a method and a system for preventing an electric automobile from slope slipping. The method for preventing the electric automobile from slope slipping comprises judging whether the electric automobile needs to enter into a slope slipping prevention mode or not according to current states of the electric automobile and starting the slope slipping prevention mode if the electric automobile needs to enter into the slope slipping prevention mode and obtaining the target accelerated speed according to the target automotive speed during the slope slipping prevention mode, detecting the automotive actual speed and the target accelerated speed in real time and controlling a motor to output driving torque until the actual speed achieves the target automotive speed during the process of adjusting the motor driving torque and confirming that a slope slipping function is achieved through an integral controller. According to the technical scheme of the method and the system for preventing the electric automobile from slope slipping, the driving torque for preventing the electric automobile from slop slipping is obtained according to the driving speed of the electric automobile, accurate motor driving torque is obtained with the target automotive speed serving as a control purpose and not influenced by other factors, and the electric automobile can be completely prevented from slope slipping.
Description
technical field [0001] The invention relates to the technical field of electric vehicle manufacturing, in particular to a method and system for preventing electric vehicles from sliding downhill. Background technique [0002] With the shortage of energy and the aggravation of environmental pollution, the development of the traditional automobile industry is facing great challenges. Therefore, the emergence of electric vehicles is favored by the majority of automobile manufacturers and consumers, and has become a hot spot in the development of automobiles. As the name suggests, an electric vehicle is a vehicle powered by electric energy, and the electric vehicle is driven forward or backward by a motor. In the practical application of electric vehicles, electric vehicles often pass by ramps. When an electric vehicle is driving on a slope, the driver needs to perform a braking operation while stepping on the gas pedal, which requires the driver to have good coordination abili...
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IPC IPC(8): B60W30/18
CPCB60W10/08B60W30/18027B60W40/06B60W2510/083B60W2520/10B60W2552/05B60W2710/083B60W2720/10
Inventor 庞青年周泽鑫陶建坤郑芳艳
Owner CHINA YOUNG MAN AUTOMOBILE GRP PASSENGER CAR GRP CO LTDA
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