Hydrogen energy automobile fuel cell quick discharging method and system

A fuel cell system and fuel cell technology, applied in the direction of battery/fuel cell control devices, electric vehicles, electrical devices, etc., can solve the problem of passive discharge of fuel cell systems for a long time, increase energy utilization rate, reduce open circuit Effect of voltage, rapid discharge

Pending Publication Date: 2020-12-18
黄冈格罗夫氢能汽车有限公司
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Problems solved by technology

[0004] The present invention provides a method and system for rapid discharge of fuel cells of hydrogen vehicles, which s

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  • Hydrogen energy automobile fuel cell quick discharging method and system

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[0044] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0045] Please refer to figure 1 , which is a flow chart of the method of the present invention, a method for rapid discharge of a hydrogen energy vehicle fuel cell proposed by the present invention, comprising the following steps:

[0046] S1. The vehicle control unit VCU monitors the state of the electronic control unit FCU in real time. If the FCU operates normally, it is determined that the vehicle is in normal mode and enters step S2. If the VCU receives the fault alarm issued by the FCU, it is determined that the vehicle is in the normal mode. failure mode and enter step S4;

[0047] S2. The FCU monitors the state of the fuel cell system in real time; if the FCU detects that the fuel cell system stops running, it goes to step...

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Abstract

The invention relates to a hydrogen energy automobile fuel cell quick discharging method and system. The method comprises the following steps that a VCU (Vehicle Control Unit) monitors the state of anFCU (Electric Control Unit) in real time, judges that a vehicle is in a normal mode if the FCU operates normally, and judges that the vehicle is in a fault mode if the VCU receives a fault alarm sentby the FCU; in the normal mode, the FCU monitors the state of a fuel cell system in real time, and if the FCU detects that the fuel cell system stops running, the FCU controls the fuel cell system todischarge quickly according to a discharge strategy of the normal mode; and in the fault mode, if the FCU detects that a highest-level fault occurs or a DCDC (direct-current conversion controller) shutdown fault occurs, the FCU controls the fuel cell system to discharge quickly according to a discharge strategy of the fault mode. The DCDC and a thermistor work together to realize rapid dischargeof a fuel cell; the energy utilization rate is increased; the open-circuit voltage is reduced more quickly; and generated heat is reduced.

Description

technical field [0001] The invention relates to the field of fuel cell discharge, in particular to a method and system for rapid discharge of a hydrogen-energy vehicle fuel cell. Background technique [0002] With the support of national and local governments for fuel cells, fuel cell vehicles have developed rapidly, and more and more fuel cell vehicles have begun to enter the market. The fuel cell system is the heart of the fuel cell vehicle and plays a decisive role in the performance of the fuel cell vehicle. [0003] The traditional fuel cell system has a high open circuit voltage after each operation. Whether it is shut down or enters the idle state, it is very slow. It takes a lot of time to wait for the passive discharge of the fuel cell system, and some will add a heater. Sensitive resistance to consume, the discharge efficiency of this method is not high, and there is a situation of generating heat. The continuous research of random technology, how to let the fuel...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60L58/30
CPCB60L3/0053B60L58/30Y02T10/72Y02T90/40
Inventor 杨毅明郝义国汪江
Owner 黄冈格罗夫氢能汽车有限公司
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