One-time glu-filling formation method for double-pole-plate sealing assembly

A technology of sealing components and bipolar plates, which is applied to battery pack components, sealing/supporting devices, electrical components, etc., can solve problems such as low pass rate, unstable product quality, and high skill requirements, so as to improve sealing performance and improve The effect of processing accuracy and product pass rate and improving work efficiency

Inactive Publication Date: 2006-08-09
南京博能燃料电池有限责任公司
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AI Technical Summary

Problems solved by technology

This method is inefficient and relies on manual operation, which requires high skills of the operator, resulting in unstable product quality and low pass rate, which does not meet the requirements of large-scale mechanized production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A method for one-time injection molding of a bipolar plate sealing assembly according to the present invention, the method includes the following steps:

[0017] (1) Sealing grooves and glue injection holes connected to the sealing grooves on both sides are provided on both sides of the bipolar plate body, and an exhaust port is reserved on the sealing grooves; the sealing groove is to solidify the sealing material in the groove and form The fixed shape meets the sealing requirements, and the exhaust port is to discharge the original air in the groove in time when the sealing material is injected into the groove, which is not only conducive to the flow of the glue injection material, but also prevents residual influence in the cured sealing component. Airtight quality air bubbles;

[0018] (2) prepare a pair of mold according to the shape of bipolar plate, this mold has sealing ring mold cavity and glue injection opening corresponding to the sealing groove on the bipola...

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PUM

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Abstract

The method includes steps: setting up seal grooves and hole for injecting glue run-through seal grooves on two faces on two sides of the bipolar plate, and arranging air outlets on seal grooves; based on shape of structure of bipolar plate, preparing a pair of mold, which possesses cavity in shape of seal ring and opening for injecting glue corresponding to the said grooves and hole on the bipolar plate; clamping the bipolar plate in middle of the pair of mold, and injecting sealing material to the opening on the mold; after sealing material is solidified, breaking the mold obtains sealing unit. Raising work efficiency, the method is suitable to industrialized production. Features are: better sealability of sealing unit, raised working accuracy and qualification rate.

Description

1. Technical field [0001] The invention relates to a processing method in the field of fuel cells, in particular to a method for one-time injection molding of a bipolar plate sealing assembly of a fuel cell. 2. Background technology [0002] A fuel cell is a device that directly converts the chemical energy of hydrogen and oxygen into electrical energy through an electrode reaction. The biggest feature of this device is that since no combustion is involved in the reaction process, its energy conversion efficiency is not limited by the "Carnot cycle". The efficiency of most types of fuel cells is as high as 50%-60%. With secondary utilization, the total efficiency can be as high as 80%-85%. As a power source, its actual energy utilization efficiency is 2-3 times that of ordinary internal combustion engines. There is almost no pollution during its working process, and the power range is from several watts to several megawatts, and the application range is very wide. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M8/02H01M2/08B29C45/00H01M8/0276H01M8/0284H01M8/0286
CPCY02E60/12Y02E60/50Y02P70/50
Inventor 钱建东沈建跃曲平康新
Owner 南京博能燃料电池有限责任公司
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