Electric car hill-holding control system and control method
A control system and electric vehicle technology, applied in electric vehicles, control drive, electric energy management, etc., can solve problems such as slope slippage, lack of power, driving safety accidents, etc., and achieve stable slope transition and fast slope adjustment speed Effect
Inactive Publication Date: 2015-12-16
TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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Problems solved by technology
[0002] Electric vehicles have low noise and zero emissions. They are the development direction of new energy vehicles, and they are also the most ideal and most likely green vehicles to replace fuel vehicles. However, when the car is driving uphill, due to its gravity, the car will slide down. Ordinary fuel vehicles will lose power and slide when shifting gears, which may cause driving safety accidents and cause psychological shock to the passengers on the vehicle. Even if the car with automatic transmission is in forward gear D, If the angle of the slope is too large, the slope will also be caused by insufficient power, so the auxiliary parking function is very important for safe driving
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[0022] The concrete implementation method of the present invention is as follows:
[0023] Most of the existing electric vehicle parking slope control systems use a speed control system, and the speed control system generally detects and collects information such as motor speed or vehicle speed, and judges whether the parking slope control system is activated according to the collected information, and starts the parking slope. When controlling the system, the vehicle control system switches from the driving torque mode to the standing slope speed mode. The switching response speed of the control mode is slow, resulting in a long distance for the vehicle to slide down the slope, and the switching of the control mode is not smooth, with obvious frustration. affect driving comfort.
[0024] In order to solve the above problems, the present invention proposes a parking control system for an electric vehicle, including a driving module and a parking module, the driving module is c...
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The invention discloses an electric car hill-holding control system. The electric car hill-holding control system comprises a driving module and a hill-holding module, wherein the driving module is connected with the hill-holding module; the hill-holding module is a rotation speed closed-loop control module with an input rotation speed being zero; an output rotation speed of the driving module is a lower output limit of the driving module; an accelerator torque is a lower output limit of the hill-holding module. A control method using the control system is used for enabling the hill-holding module and the driving module to simultaneously take effect, so that the switching transition of the rotation speed control and the torque control is eliminated; the hill-holding response is rapid and stable.
Description
technical field [0001] The invention relates to an electric vehicle control system, in particular to an electric vehicle parking slope control system and a control method. Background technique [0002] Electric vehicles have low noise and zero emissions. They are the development direction of new energy vehicles, and they are also the most ideal and most likely green vehicles to replace fuel vehicles. However, when the car is driving uphill, due to its gravity, the car will slide down. Ordinary fuel vehicles will lose power and slide when shifting gears, which may cause driving safety accidents and cause psychological shock to the passengers on the vehicle. Even if the car with automatic transmission is in forward gear D, If the angle of the slope is too large, the slope will also be caused by insufficient power, so the auxiliary parking function is very important for safe driving. [0003] Chinese patent 201110446718.X discloses an electric vehicle electronic parking slope ...
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Login to View More IPC IPC(8): B60L15/20
CPCY02T10/72
Inventor 李岷舣张德星徐龙军李松梁
Owner TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD