Humidity control method and device for fuel cells
The fuel cell humidity management device addresses the complexity and accuracy issues in existing techniques by using an internal humidity map to calculate and control humidity levels within the fuel cell, achieving precise and efficient humidity management.
JP7647506B2Active Publication Date: 2025-03-18MITSUBISHI MOTORS CORP
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Patent Information
- Application Number
- JP2021187481
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-11-18
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2041-11-18
AI Technical Summary
Technical Problem
Existing fuel cell humidity management techniques are either complex and structurally intrusive, such as inserting humidity sensors between electrodes, or require complicated control designs due to indirect humidity measurement.
Method used
A fuel cell humidity management device that stores an internal humidity map correlating current values with corresponding humidity levels, allowing for precise humidity calculation and control using a humidity calculation unit and control unit.
Benefits of technology
Enables high-precision humidity management without complicating the fuel cell structure, improving hydrogen fuel economy, and enhancing the reliability and quality assurance of the fuel cell system.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a humidity management method and device of a fuel cell which can realize highly accurate humidity management without complicating a structure of the fuel cell.SOLUTION: A humility management device (200) of a fuel cell (100) comprises: a storage unit which previously stores an internal humidity map (202) in which a current value to a control voltage Vx in the operation start of the fuel cell is associated with an internal humidity of the fuel cell; a humidity calculation unit (201) which inputs an actually measured current I to the control voltage in the operation start of the fuel cell and calculates an internal humidity RHc corresponding to the actually measured current by referring to the internal humidity map; and a humidity control unit (203) which controls the internal humidity of the fuel cell by using the calculated internal humidity.SELECTED DRAWING: Figure 1
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