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Management method and system for regenerative braking energy during differential steering of front wheel hub of electric vehicle

An energy management system and technology for electric vehicles, which are applied in the field of regenerative braking energy management in front wheel hub differential steering of electric vehicles, can solve the problem of limited regenerative braking energy, reduce the utilization rate of regenerative braking energy, and do not consider the loss of regenerative braking energy. and other problems to achieve the effect of reducing energy loss and improving energy utilization.

Inactive Publication Date: 2020-02-07
WUHAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] At present, most regenerative braking systems transmit the generated regenerative braking energy directly to the power battery for storage, without considering the loss of regenerative braking energy storage and energy release, especially in the differential steering of front hub electric vehicles. If the regenerative braking system is added to the environment, due to the limited regenerative braking energy, it is easy to lose in the process of energy transmission, so that the utilization rate of regenerative braking energy is reduced

Method used

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  • Management method and system for regenerative braking energy during differential steering of front wheel hub of electric vehicle
  • Management method and system for regenerative braking energy during differential steering of front wheel hub of electric vehicle

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Embodiment Construction

[0036] The principles and features of the present invention will be described below in conjunction with the accompanying drawings and specific embodiments. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0037] Such as figure 1 with figure 2 As shown, the present invention provides an electric vehicle front wheel hub differential steering regenerative braking energy management method, comprising the following steps:

[0038] S1: Collect the accelerator opening signal, steering wheel angle signal, left front wheel speed and right front wheel speed of the electric vehicle;

[0039] S2: Calculate the target vehicle speed and target turning radius of the electric vehicle according to the accelerator opening signal and the steering wheel angle signal;

[0040] S3: Calculate the target wheel speed of the left front wheel and the target wheel speed of the right front wheel of the electric vehicle...

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Abstract

The invention relate to a management method and system for regenerative braking energy during differential steering of a front wheel hub of an electric vehicle. The management method comprises the following steps that a throttle signal, a steering wheel signal, the left front wheel speed and the right front wheel speed of the electric vehicle are collected; the target vehicle speed and target turning radius of the electric vehicle are calculated according to the throttle signal and the steering wheel signal; according to the target vehicle speed and the target turning radius, a steering modelof the electric vehicle is combined at the same time to calculate the left front wheel target wheel speed and the right front wheel target wheel speed; and according to the left front wheel speed, theright front wheel speed, the left front wheel target wheel speed and the right front wheel target wheel speed, the operation state of the left front wheel and the right front wheel of the electric vehicle is judged, and thus the compensation power or storage power of an electric vehicle power battery is calculated. The management method has the beneficial effects that the operation state of the front wheel hub of the electric vehicle is effectively judged, thus whether a regenerative braking system is added or not is decided, effective utilization and recovery of the feedback braking energy are achieved, the energy utilization rate is increased, and energy saving and environmental protection are achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle energy saving, in particular to a method and system for managing regenerative braking energy in front wheel hub differential steering of an electric vehicle. Background technique [0002] With the development of new energy vehicles, in-wheel motors are considered to be an effective means to solve energy and environmental problems. [0003] At present, most regenerative braking systems transmit the generated regenerative braking energy directly to the power battery for storage, without considering the loss of regenerative braking energy storage and energy release, especially in the differential steering of front hub electric vehicles. If the regenerative braking system is added to the environment, due to the limited regenerative braking energy, it is easy to lose in the process of energy transmission, so that the utilization rate of regenerative braking energy is reduced. [0004] How to directly ...

Claims

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Application Information

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IPC IPC(8): B60W30/18B60W40/10B60W40/00B60L7/10
CPCB60L7/10B60W30/18127B60W40/00B60W40/10
Inventor 王硕张光德马强高维士李华鑫陈李济
Owner WUHAN UNIV OF SCI & TECH
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