Polar plate, battery cell, and fuel cell
By designing a plate structure with gradually narrowing flow channels and staggered gas inlets and outlets, the problems of insufficient gas flow and water flooding in fuel cells were solved, thereby improving the performance and stability of fuel cells.
CN224417756UActive Publication Date: 2026-06-26BEIJING HYDROGEN NEW ENERGY TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING HYDROGEN NEW ENERGY TECH CO LTD
- Filing Date
- 2025-01-24
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Existing fuel cells are prone to undergassing and flooding issues in the flow channels, resulting in poor efficiency.
Method used
The design incorporates an electrode structure with a flow channel width that gradually narrows from the inlet to the outlet, combined with staggered gas inlets and outlets, and coolant channels between the electrodes, to optimize gas distribution and drainage capacity.
Benefits of technology
This improved gas flow rate and uniform distribution, reduced the probability of undergassing and flooding, and enhanced the overall performance and stability of the fuel cell.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224417756U_ABST
Abstract
The present disclosure relates to a kind of polar plate, battery unit and fuel cell, polar plate includes flow field, flow field includes: fluid inlet area, located at the edge of the first direction of flow field, fluid inlet area includes the air inlet and hydrogen inlet arranged at intervals;Fluid outlet area, located at the edge of the other end of the first direction of flow field, fluid outlet area includes the air outlet and hydrogen outlet arranged at intervals;Flow channel area, flow channel area is used to accommodate air or hydrogen, is communicated between fluid inlet area and fluid outlet area, flow channel area includes multiple flow channels arranged at intervals, and the width of flow channel gradually narrows from one end close to fluid inlet area to one end close to fluid outlet area.The gradual narrowing of flow channel width from inlet to outlet helps to maintain a high flow rate and pressure of gas during flow, promotes uniform distribution and efficient use of gas, improves the gas transmission rate and drainage capacity of the corresponding outlet, reduces the probability of under-gas and flooding, and improves the overall performance of the fuel cell.
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