Energy recovery method and system

An energy recovery and braking energy recovery technology, applied in electric braking systems, power management, electric vehicles, etc., can solve problems such as the inability to exert the energy recovery capability of the motor, and achieve the effect of optimizing fuel consumption and pure electric endurance.

Active Publication Date: 2019-10-29
JIANGLING MOTORS
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Problems solved by technology

[0004] Based on this, the purpose of the present invention is to provide an energy recovery method and system to solve the technical problem that the energy recovery capability of the motor cannot be maximized in the prior art

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Embodiment Construction

[0042] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0043] It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0044] Unless otherwise def...

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Abstract

The invention provides an energy recovery method and system. The energy recovery method comprises the steps that a vehicle control unit sets a sliding energy recovery torque corresponding to a currentvehicle speed to a motor when the current vehicle speed is higher than a threshold value and a throttle opening is zero; the vehicle control unit detects whether a braking pedal is stepped down or not; if the braking pedal is stepped down, the vehicle control unit calculates a maximum energy recovery torque, which can also be provided by the motor after the sliding energy recovery torque is eliminated, and transmits the maximum energy recovery torque to a braking controller; the braking controller calculates a braking energy recovery torque according to the maximum energy recovery torque anda current vehicle slip rate and transmits the braking energy recovery torque to the vehicle control unit; and on the basis of the sliding energy recovery torque, the vehicle control unit sets the braking energy recovery torque to the motor in a superposed manner. According to the energy recovery method, by providing a sliding and braking energy recovery strategy led by the vehicle control unit, the energy recovery capacity of the motor can be developed to a maximum degree so that an optimal energy recovery effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to an energy recovery method and system. Background technique [0002] Among new energy vehicles, especially pure electric vehicles, energy recovery has become a basic vehicle function that cannot be ignored. The function of the energy recovery function is to convert a part of the mechanical energy when the vehicle is decelerating or braking into electrical energy through the motor under the premise of ensuring the driving stability of the electric vehicle, and the recovered electrical energy is stored in the battery pack. [0003] Among the existing technologies, due to technical bottlenecks, most new energy vehicles use the Regeneration Brake System (regenerative braking system function, RBS) in the ESP (Electronic Stability Program, vehicle body electronic stability system) to coast or brake the motor. Energy recovery control, but ESP cannot monitor the status of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B60L15/20
CPCB60L7/10B60L15/2009B60L2240/12B60L2240/421Y02T10/72
Inventor 戴紫璐魏黎徐玄之彭超乔虹易忠新
Owner JIANGLING MOTORS
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