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Hydrogen fuel cell automobile starting idle speed control strategy and control system

A fuel cell and idle speed control technology, which is applied in battery/fuel cell control devices, electric vehicles, vehicle energy storage, etc., can solve problems such as fuel cell performance attenuation, to prevent excessive cell voltage, protect the stack, and ensure The effect of service life

Pending Publication Date: 2022-04-15
北京格睿能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of fuel cell performance attenuation in hydrogen fuel cell vehicles under complex working conditions such as start-stop and idling

Method used

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  • Hydrogen fuel cell automobile starting idle speed control strategy and control system
  • Hydrogen fuel cell automobile starting idle speed control strategy and control system
  • Hydrogen fuel cell automobile starting idle speed control strategy and control system

Examples

Experimental program
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Embodiment 1

[0054] like figure 1 As shown, this embodiment provides a hydrogen fuel cell vehicle startup idle speed control strategy, wherein the hydrogen fuel cell vehicle power battery SOC changes as follows figure 2 As shown, the power output of the hydrogen fuel cell vehicle fuel cell system changes as image 3 As shown, the hydrogen fuel cell vehicle startup idle speed control strategy in this embodiment includes the following steps:

[0055] Set the SOC threshold, where the first threshold is when the power battery SOC reaches 70% to 73%; the second threshold is when the power battery SOC reaches 45.5%; the third threshold is when the power battery SOC reaches 55% to 57% %.

[0056] After the vehicle is started, the power battery starts to output energy to start the fuel cell related accessories.

[0057] The fuel cell starts, charges the power battery, and maintains the work of related accessories.

[0058] When the power battery is charged and the SOC reaches the set first th...

Embodiment 2

[0068] like Image 6 As shown, a hydrogen fuel cell vehicle startup idle speed control system is provided in this embodiment, including: a setting module, an acquisition module, and a control module; the setting module is used to set the SOC threshold; the acquisition module is used to obtain the vehicle startup. Power battery SOC; the control module is used to control the power output of the hydrogen fuel cell based on the power battery SOC and the SOC threshold.

[0069] Further, the setting module includes a first setting module, a second setting module, and a third setting module;

[0070] The first setting module is used to set the first threshold, the second setting module is used to set the second threshold, and the third setting module is used to set the third threshold;

[0071] The first threshold, the second threshold and the third threshold are all used to determine different power output states of the hydrogen fuel cell.

[0072] Further, when the SOC of the pow...

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PUM

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Abstract

The invention discloses a hydrogen fuel cell automobile starting idle speed control strategy and system, and the method comprises the following steps: presetting an SOC threshold value, obtaining the SOC of a power cell after the automobile is started, enabling a fuel cell to enter a set near-zero power output state when the SOC of the power cell reaches a first threshold value, and enabling the fuel cell to be started again when the SOC of the power cell is lower than a second threshold value, and when the SOC of the power battery reaches a third threshold value, the fuel battery keeps low power output and enters an idle speed state, and the idle speed control strategy of the hydrogen fuel cell automobile is completed through the steps. According to the invention, the performance degradation caused by overhigh voltage of the electric pile in the idling process of the fuel cell automobile can be effectively reduced, and the consumption of hydrogen is reduced to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of fuel cell systems of fuel cell vehicles, and in particular relates to a hydrogen fuel cell vehicle start-up idling control strategy and a control system. Background technique [0002] As a clean and environmentally friendly power generation device, fuel cells can directly convert chemical energy into electrical energy through redox reactions, so they are not limited by the Carnot cycle and exhibit high energy conversion efficiency. In addition, its simple structure and fast response speed make fuel cells ideal as mobile power sources or as stationary power stations. With the maturity of fuel cell technology and the advocacy of low-carbon environmental protection policies in various countries, hydrogen fuel cell vehicles are gradually emerging. Compared with lithium-ion electric vehicles, hydrogen fuel cell vehicles use hydrogen as fuel, have fast refueling time, long cruising range, clean and efficient, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/40
CPCY02T10/70
Inventor 徐晓明洪吉超赤骋陈东方胡松王越李跃华杨远李仁政赵磊唐伟孙旭东
Owner 北京格睿能源科技有限公司
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