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Pure electric vehicle and energy recovery control method and system thereof

A pure electric vehicle, energy recovery technology, applied in electric vehicles, electric braking system, power management and other directions, can solve the problems of uneven speed, affecting driving experience, avoid strong impact, improve driving range, The effect of meeting different needs

Pending Publication Date: 2020-03-13
HENAN SUDA ELECTRIC AUTOMOBILE TECH
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Problems solved by technology

[0005] Through the above method, the energy recovery control can be performed based on the opening of the brake pedal as the switch value, but the energy recovery during the braking process will have a strong sense of impact, and the energy recovery during the deceleration process will cause the vehicle speed to be uneven and affect driving. Take advantage of the feeling

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  • Pure electric vehicle and energy recovery control method and system thereof
  • Pure electric vehicle and energy recovery control method and system thereof
  • Pure electric vehicle and energy recovery control method and system thereof

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Embodiment Construction

[0039] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, a pure electric vehicle and its energy recovery control method and control system proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. Its specific implementation, structure, feature and effect thereof are described in detail as follows. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0040] It should be noted that when an element is referred to as being “connected” to another element, it can be directly on the other element or there can also be an intervening element.

[0041] Unless otherwise defined, all technical and scientific te...

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Abstract

The invention relates to the technical field of energy recovery of pure electric vehicles, in particular to a pure electric vehicle and an energy recovery control method and system thereof, and the control method comprises: when the pure electric vehicle is in a braking state or a sliding state, controlling the pure electric vehicle to enter a corresponding energy recovery mode; according to the energy recovery mode, obtaining a first feed torque of the driving motor by combining the current vehicle speed, the opening degree of the brake pedal and the energy recovery intensity gear; obtaininga second feed torque of the driving motor according to the maximum allowable charging power of the power battery and the rotating speed of the driving motor; looking up the table to obtain an externalcharacteristic torque value of the driving motor as a third feed torque of the driving motor; and comparing the values of the first feed torque, the second feed torque and the third feed torque to obtain a minimum value, and taking the minimum value as the actual feed torque of the driving motor. By means of the method, different degrees of effective recovery of braking energy is achieved, and different requirements of users for vehicle comfort and cruising ability are met.

Description

Technical field [0001] The invention relates to the technical field of energy recovery of pure electric vehicles, and specifically relates to a pure electric vehicle and its energy recovery control method and control system. Background technique [0002] At present, there are two main control methods for braking energy recovery of pure electric vehicles: parallel type and series type. The parallel type directly superimposes the motor feedback braking force on the original friction braking force without adjusting the original friction braking force. It is more convenient to implement, but has the disadvantages of low feedback efficiency and poor braking feeling; the series type is preferred. Feedback braking force has high feedback efficiency and good braking feeling, but the traditional braking system needs to be modified or redesigned. [0003] The invention patent with patent application publication number CN108790839A discloses an energy recovery control method and an en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B60L15/20
CPCB60L7/10B60L15/20Y02T10/72
Inventor 员汝娜赵旭阳牛占亚杨欢陈新波贺彬起
Owner HENAN SUDA ELECTRIC AUTOMOBILE TECH
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