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Fuel battery power system of mixed power vehicle

A technology of hybrid electric vehicles and fuel cells, which is applied in the direction of electric vehicles, electric traction, vehicle energy storage, etc., to achieve the effect of ensuring power performance and reasonable distribution

Inactive Publication Date: 2007-07-18
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the present invention, the fuel cell engine is adopted as the main power source, and the lithium-ion battery is used as the auxiliary power source to solve the following problems caused by using the fuel cell stack as the main power source: 1) during the start-up of the fuel cell stack, the air pressure 2) The fuel cell stack supplies power to the drive motor during start-up; 3) When the car brakes, the recovered part of the electric energy is stored by the drive motor and the motor controller

Method used

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  • Fuel battery power system of mixed power vehicle

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Embodiment Construction

[0010] As shown in Figure 1, among the present invention, drive motor 11 and drive system 10 formed by motor controller 12 connected with it by cable, drive motor 11 adopts torque closed-loop control; connected; the fuel cell engine 30 includes a fuel cell engine controller 31 and a fuel cell stack 32, and the fuel cell engine 30 is connected to the drive system 10 through a DC / DC converter 40 through a high-voltage direct current bus; the lithium ion storage battery 20, the fuel cell The engine controller 31 and the DC / DC converter 40 are connected with the vehicle controller 50 through an optical fiber CAN control line. In the power system of the present invention, considering the characteristics of low output voltage, soft output characteristics and slow response of the fuel cell stack, the current closed-loop control of the DC / DC converter is used together with a high-energy battery pack to realize the drive motor torque closed-loop control. When the car is in the startin...

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Abstract

The present invention relates to an electricity-electricity hybrid fuel cell vehicle power system. It is characterized by that its drive system is composed of drive motor and motor controller, the lithium ion battery is connected with said drive system, the fuel cell engine includes fuel cell engine controller and fuel cell pile, said fuel cell engine is connected with drive system by means of DC / DC converter; the described lithium ion battery, fuel cell engine controller and DC / DC converter are connected with complete vehicle controller by means of optical-fiber CAN control line.

Description

technical field [0001] The invention relates to an electric-electric hybrid fuel cell vehicle power system, in particular to an electric-electric hybrid power system with an auxiliary power source. Background technique [0002] A fuel cell electric vehicle uses a fuel cell as a power source, directly converts the chemical energy of the fuel into electrical energy, and drives the vehicle to run through an electric motor. From an environmental point of view, fuel cell vehicles belong to the third generation of environmentally friendly vehicles. The first generation of environmentally friendly vehicles is electric vehicles, and its disadvantages are limited battery power, short driving range, and long charging time. The second generation of environmentally friendly vehicles is hybrid vehicles. Hybrid vehicles use internal combustion engines to generate electricity and drive vehicles with electricity or internal combustion engine power. At this time, gasoline is fully burned, w...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCY02T10/7011Y02T10/70
Inventor 吴海霞
Owner CHERY AUTOMOBILE CO LTD
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