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New energy automobile regenerative braking force distribution method and new energy automobile

A new energy vehicle, regenerative braking force technology, applied in electric vehicles, electric braking systems, vehicle components, etc., can solve problems such as low braking energy recovery efficiency, inability to fully utilize the motor braking capacity, and loss of braking.

Active Publication Date: 2021-01-22
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that there is little change to the original braking system, but the disadvantage is that the braking capacity of the motor cannot be fully utilized, resulting in a low efficiency of braking energy recovery, and there may be a risk of losing the brake in some extreme working conditions.

Method used

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  • New energy automobile regenerative braking force distribution method and new energy automobile
  • New energy automobile regenerative braking force distribution method and new energy automobile
  • New energy automobile regenerative braking force distribution method and new energy automobile

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Embodiment Construction

[0035] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific si...

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Abstract

The invention discloses a new energy automobile regenerative braking force distribution method and a new energy automobile, and relates to the technical field of new energy automobile braking. The method comprises the following steps: a first braking strength limit is determined according to the current braking capacity of a motor, and a second braking strength limit is determined according to braking efficiency and braking stability; a regenerative braking force distribution strategy is determined according to the magnitude relation between the braking strength and the first braking strengthlimit and the second braking strength limit, and the total braking force is distributed to rear wheels as much as possible; and the rear wheel total braking force obtained through distribution is divided into the rear wheel friction braking force and the motor braking force, when the motor can meet the braking requirement, the rear wheel total braking force is distributed to the motor as much as possible, and when the motor cannot meet the braking requirement, the rear wheel friction braking force is used for compensation. According to the method, the total braking force can be distributed tothe braking force of the rear wheels according to the maximum braking force provided by the motor, so that the braking capacity of the motor is brought into full play, and efficient braking energy recovery is realized.

Description

technical field [0001] The invention relates to the field of braking of new energy vehicles, in particular to a method for distributing regenerative braking force of a new energy vehicle and a new energy vehicle. Background technique [0002] Traditional fuel vehicles use mechanical friction for braking, while new energy vehicles can brake the vehicle through the anti-drag torque of the motor. At the same time, the motor generates electricity, and the generated electric energy is stored in the battery, thereby saving energy consumption of the vehicle. [0003] At present, the distribution method of regenerative braking force adopted by new energy vehicles is generally a method in which the ratio of the braking force distributed to the front and rear wheels is fixed, and the braking force of the motor is superimposed on the rear wheels. The advantage of this method is that there is little change to the original braking system, but the disadvantage is that the braking capacity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/26B60L7/18
CPCB60L7/26B60L7/18
Inventor 周威力高铁石韩景峰冷彪李同占
Owner FAW JIEFANG AUTOMOTIVE CO
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