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Sealing structure and method of battery pipeline system

A sealing structure and battery tube technology, which is applied to fuel cell components, circuits, fuel cells, etc., can solve problems such as loose interfaces, energy storage system hazards, and loose connections, and achieve easy processing, optimized sealing effects, and applicable high degree of effect

Active Publication Date: 2014-03-05
大连融科储能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pipeline system is integrated through the connection of plastic pipelines with elbows, ball valves, unions, tees and other components. In order to save the layout space, the pipelines with a length of tens of meters need to experience many times of bending and circling. Inevitably, there are many interfaces between pipeline components, and the pipeline interface components often have the problem of loose connection or loose connection after a long period of liquid flow, which becomes the main leakage point of the flow battery
[0003] As a power device, flow batteries are used in the field of large-scale energy storage. Leakage of the electrolyte as a conductor often brings great harm to the energy storage system. Therefore, the prevention and treatment of electrolyte leakage is particularly important. The patent introduces the corresponding solution to the electrolyte leakage problem

Method used

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  • Sealing structure and method of battery pipeline system
  • Sealing structure and method of battery pipeline system
  • Sealing structure and method of battery pipeline system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] At 1 / 2 of the overlapping part of the PVC pipe and the connecting piece, an annular groove with a depth of 1 / 4-1 / 3 of the pipe wall thickness and a width of 3-6mm is machined, respectively on the outer wall of the PVC pipe and the connecting piece. Apply adhesive on the inner wall; then connect the PVC pipe and connectors.

Embodiment 2

[0036] At 1 / 3 of the overlap between the connector and the PVC pipe socket, process an annular groove with a depth of 1 / 4-1 / 2 the wall thickness of the connector and a width of 0.5-10mm, respectively on the outer wall of the PVC pipe and the connector. Apply adhesive on the inner wall; then connect the PVC pipe and the connector.

Embodiment 3

[0037] Example 3 Assembling the liquid flow battery system of the 3MW project in Heishan

[0038] Before improvement:

[0039] The installation of the liquid inlet of the stack in this project is to directly glue the PVC pipe (the wall thickness of the pipe is 4mm) to the PVC liquid inlet plate (the insertion distance is 30mm). When it is assembled to the 35th stack, there are already 5 Leaks appeared in the stack, and the proportion of leaks reached 14%, which increased a lot of maintenance tasks.

[0040] Improved:

[0041] Process an annular groove with a width of 3-6mm and a depth of about 2mm in the middle of the PVC pipe inserted into the liquid inlet plate with a length of 30mm, and then bond it. Continuing to assemble the system in this way, after installing 80 stacks, no more leakage points were added.

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Abstract

The invention provides a sealing structure of a battery pipeline system, relates to the technical field of electrical equipment, and in particular relates to the sealing structure of the battery pipeline system. The sealing structure comprises an internal part and an external part which are sheathed and connected with each other; the outer wall of the internal part is provided with at least one groove, or the inner wall of the external part is provided with at least one groove. The leaky point of the pipeline system is sealed by the sealing structure, and the sealing structure is simple and convenient to machine and easy to implement and operate; the sealing structure is good in sealing effect and free from adverse effects; the sealing structure is high in adaptability, thus being implemented on pipelines made of various materials and parts with various of shapes; after the sealing structure is adopted, the condition of liquid leakage of the flow battery pipeline system can be reduced to the utmost extent, and the environmental pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a sealing structure and method for a battery piping system. Background technique [0002] As a new type of green secondary battery, liquid flow batteries have advantages that other battery systems cannot match, such as flexible scale setting, large degree of freedom in site selection, fast response, and long cycle life. They have been used in solar energy storage systems, wind power energy storage equipment, large It has been successfully applied in many fields such as emergency power supply system and power system "peak shaving and valley filling". The flow battery system consists of stacks, electrolytes, piping systems, and battery management systems. The electrolyte is circulated in the stack through the piping system. The pipeline system is integrated through the connection of plastic pipelines with elbows, ball valves, unions, tees and other components. In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/0276
CPCY02E60/50H01M8/0276H01M8/04201
Inventor 孙丹张华民高素军杨振坤衣宽荣焦德贺赵振宇
Owner 大连融科储能装备有限公司