Mixed energy driving system of vehicle with fuel batteries

A fuel cell and power system technology, used in electric vehicles, electric traction, vehicle energy storage, etc., can solve the problems of reduced reliability, high cost, low emissions and fuel consumption of fuel cell vehicles, and achieve improved fuel economy, extended Service life and the effect of increasing driving mileage

Inactive Publication Date: 2006-08-16
TSINGHUA UNIV
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Problems solved by technology

[0002] Since the 1990s, the global oil crisis and air pollution have brought more and more attention to the energy-saving and environmental protection performance of automobiles. Although the application of engine electronic control technology and three-way catalysis and other exhaust purification technologies has reduced the emission and fuel consumption of automobiles. Already very low, but failed to fundamentally solve vehicle pollution and energy problems
During the start-up process of the power system, the electric energy provided by the battery pack (or supercapacitor) to fuel cell auxiliary equipment, 24V batteries and various control components or management components through the bidirectional DC/DC converter produces a certain loss in the bidirectional DC/DC converter , will reduce the working efficiency of the whole power system
At the same time,

Method used

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  • Mixed energy driving system of vehicle with fuel batteries
  • Mixed energy driving system of vehicle with fuel batteries
  • Mixed energy driving system of vehicle with fuel batteries

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[0025] The present invention will be described below with reference to the drawings.

[0026] image 3 It is a schematic diagram of the power system structure of the energy hybrid fuel cell vehicle proposed by the present invention.

[0027] An energy hybrid power system for a fuel cell vehicle. The system includes: a fuel cell system composed of a fuel cell stack, fuel cell auxiliary equipment, and a fuel cell controller; a battery system composed of a battery pack and a battery management system; A motor drive system composed of a motor and a motor controller, as well as power diodes, one-way DC / DC converters, 24VDC / DC converters, 24V batteries and vehicle controllers, two switches; the stack output of the fuel cell system is connected to power The anode of the diode; the cathode of the diode is connected to the input of the unidirectional DC / DC converter; the output of the battery pack is connected to the output of the unidirectional DC / DC converter, and is connected to the inp...

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Abstract

An energy mixed power system for the car with fuel accumulator set features that the output of electric stack is connected via anode of power diode to the input of monodirectional DC/DC converter, whose output is connected to the output of accumulator set and input of motor controller, and the inputs of auxiliary device of fuel accumulator set and 24V DC/DC converter are connected via a switch to the cathode of power diode and via another switch to the output of monodirectional DC/DC converter. The system is started by accumulator set and then is powered by fuel accumulator system.

Description

technical field [0001] The invention relates to an energy hybrid power system of a fuel cell vehicle, belonging to the technical field of fuel cell vehicle research and development. Background technique [0002] Since the 1990s, the global oil crisis and air pollution have brought more and more attention to the energy-saving and environmental protection performance of automobiles. Although the application of engine electronic control technology and three-way catalysis and other exhaust purification technologies has reduced the emission and fuel consumption of automobiles. Already very low, but failed to fundamentally solve the vehicle pollution and energy problems. Fuel cell vehicles are widely considered to be the development trend of the future automobile industry due to their excellent performances such as quietness, high efficiency and zero emission. In the face of the sharp contradiction between energy and environmental issues and the development of the automobile indu...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCY02T10/7216Y02T10/7005Y02T10/70Y02T10/72
Inventor 欧阳明高卢青春高大威金振华阎东林黄海燕裴普成李建秋
Owner TSINGHUA UNIV
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