Supercharge Your Innovation With Domain-Expert AI Agents!

Power-off control method based on full-power electric-electric hybrid fuel cell vehicle

A fuel cell, full-power technology, applied in the direction of electric vehicles, vehicle components, electrical devices, etc., can solve the problems of lack of fuel cell life and safety considerations, inapplicability, and inability to ensure that the high voltage of the whole vehicle does not switch.

Active Publication Date: 2022-04-29
DONGFENG MOTOR GRP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The entire de-energization process of the above-mentioned prior art revolves around the power battery, lacks consideration of the life and safety of the fuel cell, cannot guarantee that the high voltage of the vehicle will not be switched before the shutdown of the fuel system is completed, and does not fully consider the discharge protection of the battery stack and the battery. Consumption of residual power in the stack
This is not applicable to full-power electric-electric hybrid fuel cell vehicles with fuel cells as the main and power batteries as the auxiliary

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power-off control method based on full-power electric-electric hybrid fuel cell vehicle
  • Power-off control method based on full-power electric-electric hybrid fuel cell vehicle
  • Power-off control method based on full-power electric-electric hybrid fuel cell vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as Figure 1~3 As shown, the full-power electric-electric hybrid fuel cell vehicle designed in this embodiment includes a vehicle controller VCU 1, a fuel-electricity system FCS 2, a hydrogen storage system HMS 3, a power battery system 4, a drive motor 5, and a vehicle multi-combination system. A controller 6, defrosting and defogging PTC (electric defrosting) 7, electric air conditioner ACS 8, 12V low-voltage battery 10 (vehicle low-voltage system).

[0055] The fuel-electric system FCS 2 includes fuel cell controller FCCU 2.1, boost DCDC 2.2, FCS air compressor 2.3, FCS water pump 2.4, FCS hydrogen pump 2.5, FCS PTC 2.6, FCS fan 2.7, temperature control valve, back pressure valve, sensor Wait.

[0056] The vehicle's all-in-one controller 6 integrates 12V DCDC 6.1, 24V DCDC 6.2, drive motor controller MCU 6.3, high-voltage power distribution module, pre-charging circuit, relay (see KM3, KM5, KM6, KM8~10 in the figure), etc. .

[0057] The power battery system ...

Embodiment 2

[0066] Based on the full-power electric-electric hybrid fuel cell vehicle provided in Embodiment 1, this embodiment provides a power-off control method based on the full-power electric-electric hybrid fuel cell vehicle. The power-off control method includes a normal shutdown power-off process, a safety fault power-off process, and a normal fault power-off process, which will be described in detail below.

[0067] like Figure 4 As shown, the normal shutdown and power-off process includes the following steps:

[0068] S1: The normal power-off command of the vehicle is judged by the driver's driving intention. The vehicle controller VCU 1 recognizes whether the vehicle is powered off by receiving the keyless system PEPS signal and the gear position signal. When the driver presses the start button to enter the off gear, start the process of shutting down the fuel system (steps S3-S7) and the process of powering off the vehicle system (power battery system 4, drive motor 5, high-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a power-off control method based on a full-power electric-electric hybrid fuel cell vehicle, including a normal shutdown power-off process, a safety fault power-off process, and an emergency power-off process for a self-failure; the normal shutdown power-off process includes the following Steps: S1. Identify the command to power off the vehicle normally; S2. Determine whether to issue the FCS shutdown command according to the SOC of the power battery; S3. Start to reduce the load of the fuel system to the idle power; S4. Stop and purge the fuel system; S5. The DCDC voltage is safely discharged and the fuel cell is shut down after the residual power is exhausted; S6. Use the discharge resistor to perform discharge again; S7. Determine whether the shutdown of the fuel system is complete; S8. Close the valve of the hydrogen bottle and perform high-voltage discharge to power off ; S9, perform low-voltage power-off. The invention divides the power-off into three modes, realizes the power-off logic under different scenarios and working conditions, and avoids damage to the combustion power system caused by unreasonable logic and affects the service life of the fuel cell system.

Description

technical field [0001] The invention relates to a full-power fuel cell vehicle, in particular to a power-off control method based on a full-power electric-electric hybrid fuel cell vehicle. Background technique [0002] The high-voltage power-on control strategy of new energy vehicles is an important application field of vehicle control. With the rapid development of new energy vehicles, the high-voltage power-on strategy of new energy vehicles is basically perfect; but with the rise of hydrogen fuel vehicles, the original The strategy is not suitable for full-power fuel cell vehicles, and the relay control becomes more complicated due to the addition of an energy source. If it is impossible to consider the power-on and power-on sequence and reasonable jump logic of each system of the vehicle based on the working characteristics of the fuel-electric system and power system in a full-power fuel cell vehicle, it will lead to frequent start-up of the fuel-electric system and po...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00B60L3/04
CPCB60L3/00B60L3/0053B60L3/04
Inventor 熊洁熊成勇王明锐马义尚伟华
Owner DONGFENG MOTOR GRP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com