Method for recovering performance of fuel cell, performance recovery device, and vehicle
By reducing the oxide layer in the fuel cell under operating conditions using the cathode undergassing method, the catalyst activity is restored, which solves the performance degradation problem of fuel cells under high potential conditions and improves the performance recovery efficiency and driving comfort of fuel cells.
CN117141319BActive Publication Date: 2026-07-21WEICHAI POWER CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEICHAI POWER CO LTD
- Filing Date
- 2023-09-27
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Fuel cells experience catalyst oxidation and performance degradation under high-potential conditions such as idling and low speed, which is difficult to effectively recover with existing technologies.
Method used
By reducing the air supply to the cathode during fuel cell operation through the cathode undergassing method, the cathode voltage is controlled at a low potential, which promotes the reduction of the oxide layer and restores the catalyst activity.
Benefits of technology
It has achieved autonomous recovery of fuel cell performance, improved driving comfort, and solved the problem of performance degradation caused by catalyst oxidation.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117141319B_ABST
Abstract
The application provides a fuel cell performance recovery method, a performance recovery device and a vehicle. The method comprises the following steps: obtaining a target identifier, and obtaining a target vehicle speed when the target identifier is that the engine is in an operating state and the recovery cumulative duration is greater than a first threshold value and / or the battery performance loss is greater than a second threshold value; obtaining a target reserve and a target electric quantity when the target vehicle speed is 0, and activating a recovery function when the target reserve is greater than a third threshold value and the target electric quantity is less than a fourth threshold value greater than a fifth threshold value; obtaining the target electric quantity and the target reserve when the target vehicle speed is not 0, and activating the recovery function when the target electric quantity is greater than a sixth threshold value and the target reserve is greater than the third threshold value. The application solves the problem of fuel cell performance degradation caused by fuel cell catalyst oxidation under high potential working conditions such as idle speed and low speed.
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