A kind of energy recovery control method and device
An energy recovery and control method technology, applied in the field of energy recovery control, can solve problems such as affecting the energy recovery rate and driving comfort, not considering the influence of different working conditions on braking control, and large changes in braking deceleration.
Active Publication Date: 2022-07-15
WEICHAI POWER CO LTD
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Problems solved by technology
[0003] In the existing technology, the calibrated energy recovery control strategy is usually used for braking control, and the influence of different working conditions on braking control is not considered
However, when the vehicle weight and road resistance change greatly, or the potential energy changes greatly during the downhill process, still using the calibrated braking energy recovery strategy will cause a large change in braking deceleration, which will affect the energy recovery rate and driving comfort.
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[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0055] refer to figure 1 , showing a schematic flowchart of an energy recovery control method provided by an embodiment of the present invention. In this embodiment, the method includes:
[0056] S101: when it is detected that the vehicle is in a sliding or braking state, detect whether the vehicle is driving on a road with a slope;
[0057] S102: If it is detected that the vehicle is driving on a road with a gradient, obtain gradien...
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The invention discloses an energy recovery control method. When a vehicle is running downhill, a gradient adjustment coefficient is determined according to gradient information, and a braking recovery adjustment coefficient is determined according to vehicle weight and road resistance. Adjustment coefficient and braking recovery adjustment coefficient adjust the coasting recovery curve, and determine the coasting recovery torque according to the current vehicle speed and the adjusted coasting recovery curve; when the vehicle is in the braking state, according to the gradient adjustment coefficient and the braking recovery adjustment coefficient Adjust the brake recovery map, and determine the brake recovery torque according to the current vehicle speed, the current brake pedal opening and the adjusted brake recovery map. As a result, this implementation realizes the adjustment of the energy recovery control strategy with the changes of vehicle weight, road resistance and slope, so as to achieve a braking effect more suitable for the current working conditions, which not only ensures the comfort of the braking process, but also satisfies the Economic requirements for energy recovery.
Description
technical field [0001] The invention relates to the field of energy recovery control, in particular to an energy recovery control method and device. Background technique [0002] During the actual operation of the vehicle, the working conditions will continue to change, especially the heavy-duty vehicle. During the operation, the vehicle weight and road resistance change in a wide range, and the heavy-duty vehicle has a large potential energy during the downhill process. [0003] In the prior art, a calibrated energy recovery control strategy is usually used for braking control, and the influence of different working conditions on the braking control is not considered. However, when the vehicle weight and road resistance change greatly, or the potential energy changes greatly during the downhill process, the use of the calibrated braking energy recovery strategy will make the braking deceleration change greatly, thereby affecting the energy recovery rate and driving comfort....
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IPC IPC(8): B60W10/18B60W40/076B60W40/06B60W40/105B60W40/13
CPCB60W10/18B60W40/076B60W40/06B60W40/105B60W40/13
Inventor 马明霞桂经良李宁沈兆树王朝辉
Owner WEICHAI POWER CO LTD