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Auxiliary energy regenertion power system for electric automobile

An auxiliary power supply, electric vehicle technology, applied in electric vehicles, electric braking systems, vehicle energy storage, etc., can solve the problems of increasing the cost and complexity of the controller, reducing reliability, etc., and achieve the effect of saving electric energy and being convenient to use

Inactive Publication Date: 2004-02-11
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electric vehicles adopt a single power supply structure. Although the hardware of the system is simplified, a special DC-DC step-down converter is required to supply power to the vehicle's auxiliary equipment, which increases the cost and complexity of the controller. Reliability reduce

Method used

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  • Auxiliary energy regenertion power system for electric automobile
  • Auxiliary energy regenertion power system for electric automobile
  • Auxiliary energy regenertion power system for electric automobile

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and the examples given by the inventor.

[0024] see Figure 1-7 , according to the technical solution of the present invention, the technical route of this embodiment is: on the basis of the current feedback circuit for the main power supply in the prior art, add a control signal to control the auxiliary power supply, so that the microprocessor can control the main power supply and the auxiliary power supply at the same time The feedback current of the power supply. Since the circuit fed back to the main power supply belongs to DC-DC step-up conversion, while the circuit fed back to the auxiliary power supply belongs to DC-DC step-down conversion. When the power supply is feeding back, it can feed back to the auxiliary power supply.

[0025] The electric vehicle power drive controller includes a casing, which is composed of a microprocessor control circuit bo...

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PUM

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Abstract

The present invention discloses an auxiliary energy regeneration power system for electric automobile, and the auxiliary energy regeneration power system is increased on the basis of available main power supply. The main power supply provides energy source for the motor to run and the auxiliary power system provides energy source for the auxiliary equipment in the voltage selected based on that of the auxiliary equipment. On the basis of feedback of the main power supply, one more control signal is increased for the control of the auxiliary power system so that the microprocessor can control the main power supply and the auxiliary power system simultaneously. The auxiliary equipment is powered directly without DC / DC voltage step-down. Because of the relatively small power consumption of the auxiliary equipment, the regeneration brake is utilized for charging the auxiliary power system without additional charger is provided.

Description

1. Technical field [0001] The invention belongs to the technical field of electric vehicle drive control and relates to an auxiliary power supply system for energy regeneration of electric vehicles. 2. Background technology [0002] At present, electric vehicle test vehicles at home and abroad generally adopt a single power supply structure, whose capacity and voltage are determined by the designed motor drive system, and the on-board auxiliary equipment is powered by DC-DC step-down conversion. An important factor restricting the development of electric vehicles is their short mileage. The regenerative braking of electric vehicles to increase the mileage of vehicles has been realized on many test vehicles at home and abroad. The regenerative braking on the existing electric vehicle is to convert the kinetic energy of the vehicle into controllable feedback electric energy through the control of the power generation state of the electric motor, because when the electric vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L1/00B60L7/10B60L11/00B60L11/18B60L15/02
CPCY02T10/7005Y02T10/70
Inventor 曹秉刚李竟成白志峰谭文静康龙云杨仲庆
Owner XI AN JIAOTONG UNIV
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