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Efficient braking recycle method for electric-electric hybrid power system

A hybrid system and brake recovery technology, applied in electric braking systems, electric vehicles, electric traction, etc., can solve problems such as kinetic energy loss, inability to absorb kinetic energy, and electric braking disappearance.

Active Publication Date: 2015-05-06
ANHUI ANKAI AUTOMOBILE
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  • Application Information

AI Technical Summary

Problems solved by technology

The braking process of the first scheme is relatively smooth, but because the braking power is very small, most of the kinetic energy is converted into heat by the air brake and dissipated; It cannot absorb all the kinetic energy, and the electric brake will suddenly disappear, which will affect the braking comfort

Method used

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  • Efficient braking recycle method for electric-electric hybrid power system
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Embodiment Construction

[0018] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 1 As shown, a high-efficiency braking recovery method for an electric-electric hybrid system includes the following steps:

[0020] S1. The vehicle controller monitors the speed of the vehicle in real time since it is powered on, and calculates the real-time kinetic energy of the vehicle:

[0021] E p = 1 2 * m * v 2

[0022] Among them, E p Indicates the real-time kinetic energy of the vehicle, m indicates the real-time quality of the vehicle, and v indicates the real-time speed of the vehicle;

[0023] S2. The vehicle controller monitors the voltage of the vehicle supercapacitor in real time since it is powered on, and calculates the energy that the vehicle supercap...

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Abstract

The invention provides an efficient braking recycle method for an electric-electric hybrid power system. The method includes the following steps of monitoring the speed of a whole vehicle and the voltage of a super capacitor in real time, calculating the kinetic energy E[p] of the whole vehicle and the energy E[c] capable of being absorbed by the super capacitor in real time, and controlling a DC / DC inverter to start at the optimal inversion conversion power P[o] when a braking signal is collected and E[c] is smaller than the product of E[p] and xi. The method is mainly for the optimization algorithm of the electric braking recycle of the hybrid power system of batteries and capacitors, it can be ensured that the kinetic energy of the whole vehicle is absorbed to the maximum degree, it can be ensured that the braking process of the whole vehicle is smooth as well, the braking comfort is high, and overcharge can not happen to super capacitors.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a high-efficiency brake recovery method for an electric-electric hybrid power system. Background technique [0002] With the continuous improvement of people's awareness of environmental protection, reducing the emission of urban vehicle exhaust is a top priority. Various new energy vehicles have been put into people's lives, among which electric vehicles with high energy efficiency, low carbon environmental protection, and zero emissions have become the main force of urban new energy transportation vehicles. Based on the large-capacity storage characteristics of the battery and the high-rate charge-discharge characteristics of the capacitor, the hybrid electric vehicle combined with the battery and capacitor has become the preferred solution for the fuel-saving system. However, behind the high-rate charge and discharge of the capacitor, it hides the problem that its c...

Claims

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Application Information

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IPC IPC(8): B60L7/10B60L11/18
CPCY02T10/92
Inventor 尹剑吴成加吕小超蔡金朱华毅田阳闻鹏
Owner ANHUI ANKAI AUTOMOBILE
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