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Vehicle and its sliding feedback control method

A control method and sliding feedback torque technology, which is applied in the sliding feedback control of vehicles and in the field of vehicles, can solve the problems of not fully considering the maximum energy feedback felt by the driver and the single deceleration curve, so as to improve the efficiency of energy feedback and improve the continuous speed. mileage, easy-to-implement effect

Active Publication Date: 2015-11-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the related art, a method and system for recovering energy from vehicle coasting are proposed, which includes the feedback part of the throttle release. Although the method and system take into account the current vehicle speed, the state of the power system (such as the state of the battery, the motor, etc.) and the calibrated coasting The influence of the deceleration curve on the efficiency of energy feedback, but the deceleration curve calibrated in the throttle feedback control is relatively simple, and it does not fully consider the driver's feeling and the maximization of energy feedback

Method used

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  • Vehicle and its sliding feedback control method
  • Vehicle and its sliding feedback control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0158] Such as figure 2 As shown, the engine unit 1 is connected to the input end 313 of the double clutch 31, the first output end 311 of the double clutch 31 is connected to the first input shaft 21, and the second output end 312 of the double clutch 31 is connected to the second input shaft 22, The second input shaft 22 is coaxially sleeved on the first input shaft 21 .

[0159] A driving gear 25 is fixedly arranged on the first input shaft 21 and the second input shaft 22 respectively, and the first motor generator 41 is indirectly driven with the driving gear 25 on the second input shaft 22 through an intermediate gear 411 . Two driven gears 26 are fixedly arranged on the output shaft 24 , and the two driven gears 26 respectively mesh with the driving gears 25 on the first input shaft 21 and the second input shaft 22 to form two transmission gears.

[0160] The synchronizer 6 is arranged on the output shaft 24, and the driving gear of the main reducer (that is, the outp...

Embodiment 2

[0188] Such as image 3 As shown, the power transmission system 100 in this embodiment and figure 2 The difference of the power transmission system 100 in the above may only lie in the arrangement form of the second motor generator 43 . In this embodiment, each second motor-generator 43 drives the corresponding rear wheel 220 through a second speed change mechanism 72, and the remaining parts can be connected with figure 2 The power transmission system 100 in the embodiment is basically the same, and will not be repeated here. As for the specific working conditions, it is related to figure 2 The power transmission system 100 in the embodiment is basically the same, and the only difference is that the power transmission between the second motor generator 43 and the corresponding rear wheel 220 needs to go through the second transmission mechanism 72 , which will not be described in detail here.

Embodiment 3

[0190] Such as Figure 4 As shown, the power transmission system 100 in this embodiment and figure 2 The difference of the power transmission system 100 in the above may only lie in the arrangement form of the second motor generator 43 . In this embodiment, the second motor-generator 43 is one and drives the corresponding rear wheel 220 through a first speed change mechanism 71, and the remaining parts can be connected with figure 2 The power transmission system 100 in the embodiment is basically the same, and will not be repeated here. As for the specific working conditions, it is related to figure 2 The power transmission system 100 in the embodiment is basically the same, and the only difference is that the two rear wheels 220 are driven by a second motor-generator 43 and a first speed change mechanism 71, so without adding new components, only The differential function of the two rear wheels 220 cannot be realized by a motor and a transmission mechanism, but it can b...

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Abstract

The invention discloses a vehicle and its sliding feedback control method, wherein the sliding feedback control method includes the following steps: detecting the current speed of the vehicle, the depth of the brake pedal and the depth of the accelerator pedal of the vehicle; When the vehicle speed is greater than the preset vehicle speed, the depth of the brake pedal and the depth of the accelerator pedal are both 0, the current gear of the vehicle is the D gear, the vehicle is not in the cruise control mode and the anti-lock braking system of the vehicle is not working, controlling the vehicle to enter a coasting feedback control mode, wherein, when the vehicle is in the coasting feedback control mode, the coasting feedback torque of the first motor-generator and the second motor The coasting feedback torque of the generator is distributed. The sliding feedback control method of the vehicle of the present invention can maximize energy recovery on the premise of ensuring the driving comfort of the vehicle, and improves the energy feedback efficiency.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle sliding feedback control method and a vehicle. Background technique [0002] At present, hybrid vehicles use power batteries. How to fully improve the energy efficiency of vehicles and extend the driving range of vehicles is a key problem that hybrid vehicles need to solve. Energy feedback is a technical measure to solve this problem. [0003] In the related art, a method and system for recovering energy from vehicle coasting are proposed, which includes the feedback part of the throttle release. Although the method and system take into account the current vehicle speed, the state of the power system (such as the state of the battery, the motor, etc.) and the calibrated coasting The influence of the deceleration curve on the efficiency of energy feedback, but the deceleration curve calibrated in the throttle feedback control is relatively simple, and it does not fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/182B60W40/08B60W40/105B60L50/15B60L50/16
CPCB60K6/445B60W10/06B60W10/08B60W30/18027B60W30/18127B60W2520/10B60W2540/10B60W2540/12B60W2540/16B60W2710/0666B60W2710/083B60K6/387B60K6/442B60K6/52B60L3/108B60L3/12B60L7/14B60L7/26B60L15/20B60L15/2009B60L15/2045B60L15/2054B60L2210/30B60L2210/40B60L2220/44B60L2220/46B60L2240/12B60L2240/421B60L2240/423B60L2240/425B60L2240/427B60L2240/429B60L2240/445B60L2240/486B60L2240/507B60L2240/547B60L2240/549B60L2250/26B60L2260/24B60L2260/28B60L2260/30B60L2270/12B60L2270/145B60W10/02B60W30/188B60W2510/244B60W2710/248B60W20/14B60L50/16B60L50/61B60L58/21B60W2552/15Y02T10/40Y02T10/60Y02T10/62Y02T10/64Y02T10/70Y02T10/7072Y02T10/72Y02T10/84Y02T10/92Y10S903/914Y10S903/916Y10S903/93B60K6/50B60W10/10B60W20/00B60W30/18B60W40/10B60W40/105B60W2510/1005B60Y2200/92B60Y2300/18066B60Y2300/43B60Y2300/60B60Y2400/82
Inventor 杨冬生廉玉波张金涛罗红斌
Owner BYD CO LTD
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