Control method, device and equipment for recycling torque and vehicle

A control method and technology of a control device, which are applied in vehicle components, electric vehicles, transportation and packaging, etc., can solve problems such as poor drivability, ABS intervention, and vehicle clutter.

Inactive Publication Date: 2020-12-04
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the recovery torque is too large and the wheels slip or even lock, the antilock brake system (ABS) intervenes to reset the recovery torque to zero, but the sudden disappearance of the recovery torque will cause the vehicle to jerk, And ABS will frequently intervene and exit, resulting in extremely poor drivability

Method used

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  • Control method, device and equipment for recycling torque and vehicle
  • Control method, device and equipment for recycling torque and vehicle
  • Control method, device and equipment for recycling torque and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 2 It is a flow chart of a recovery torque control method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where an electric vehicle controls recovery torque under coasting conditions. The method can be implemented by a control device for recovery torque Execution, such as figure 1 As shown, the method specifically includes the following steps:

[0056] Step 110, when the vehicle is in a sliding condition, calculate the road surface adhesion coefficient.

[0057] Among them, the vehicle is An electric vehicle does not involve an engine vehicle. Among them, the coasting condition can be understood as the vehicle coasting with gears, that is, the foot leaves the accelerator pedal, and the driving motor outputs negative torque to recover a part of the kinetic energy while the vehicle decelerates, and converts it into electric energy of the battery.

[0058] Specifically, the process of calculating the road surfac...

Embodiment 2

[0089] Figure 8 It is a structural schematic diagram of a recovery torque control device provided by an embodiment of the present invention. Such as Figure 8 As shown, the device includes: a road surface adhesion coefficient calculation module 210 , a target slip rate determination module 220 , an axle speed acquisition module 230 , a target axle speed calculation module 240 and a regenerative torque determination module 250 .

[0090] The road surface adhesion coefficient calculation module 210 is used to calculate the road surface adhesion coefficient when the vehicle is in a sliding condition;

[0091] A target slip rate determination module 220, configured to determine the target slip rate according to the road surface adhesion coefficient;

[0092] The wheel shaft speed acquisition module 230 is used to obtain the speed of the vehicle driven wheel shaft and the speed of the driving wheel shaft;

[0093] A target shaft speed calculation module 240, configured to calcu...

Embodiment 3

[0107] Figure 9 It is a schematic structural diagram of a computer device provided by Embodiment 3 of the present invention. Figure 9 A block diagram of a computer device 312 suitable for implementing embodiments of the invention is shown. Figure 9 The computer device 312 shown is only an example, and should not impose any limitation on the functions and scope of use of the embodiments of the present invention. Device 312 is a computing device typical of regenerative torque control functions.

[0108] Such as Figure 9 As shown, computer device 312 takes the form of a general-purpose computing device. Components of computer device 312 may include, but are not limited to: one or more processors 316, storage 328, bus 318 connecting various system components including storage 328 and processor 316.

[0109] Bus 318 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a proces...

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Abstract

The embodiment of the invention discloses a control method, device and equipment for recycling a torque and a vehicle. The method comprises the steps of calculating a pavement adhesion coefficient when a vehicle is in a sliding condition; determining a target slip rate according to a pavement adhesion coefficient; obtaining the speed of a vehicle driven axle and the speed of a driving axle; calculating a target axle speed according to the speed of the driven axle and the target slip rate; and determining a recovery torque according to the target axle speed and the speed of the driving axle, and loading the recovery torque to the driving axle so that the speed of the driving axle is changed into the target axle speed. According to the control method for recycling the torque, when the vehicle is in the sliding working condition, the target axle speed is calculated according to the speed of the driven axle and the target slip rate, the recovery torque is determined according to the targetaxle speed and the speed of the driving axle, and the recovery torque is loaded to the driving axle so that the speed of the driving axle is changed into the target axle speed; and vehicle stabilitycan be improved while the energy recovery strength is ensured.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of electric vehicle energy recovery, and in particular to a control method, device, equipment and vehicle for recovering torque. Background technique [0002] Electric vehicles will recover energy from the electric motor during coasting. Energy recovery provides a certain deceleration while recovering part of the kinetic energy and storing it in the power battery, which not only reduces the wear of the brake disc, but also improves the driving range. But on ice and snow roads with extremely low adhesion coefficient, when the energy recovery torque is greater than the road adhesion limit, the wheels will lock and slip. If it happens to the front wheels, the vehicle will lose its steering ability; if it happens to the rear wheels, it will cause the vehicle to skid. [0003] In the prior art, when the recovery torque is too large and the wheels slip or even lock, the antilock brake s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/18
CPCB60L7/18
Inventor 周泽慧崔金龙吴爱彬孙起春赵洋赵永强
Owner CHINA FIRST AUTOMOBILE
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