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Vanadium cell stack structure

A vanadium battery and stack technology, applied in the field of electrochemical energy storage, can solve problems such as low sealing reliability, and achieve the effects of low processing cost, reduced risk of liquid leakage, and flexible structural design

Pending Publication Date: 2021-03-09
杭州中科氢能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a vanadium battery stack structure, which is used to solve the problem of low sealing reliability of the vanadium battery stack structure in the prior art

Method used

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Embodiment Construction

[0053] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0054] see Figure 1 to Figure 8 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...

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Abstract

The invention provides a vanadium cell stack structure which comprises welding flux and a welding groove which are located on the edge of a liquid flow frame, and a positive electrode liquid flow frame and a negative electrode liquid flow frame which are correspondingly arranged are permanently sealed through the welding flux and the welding groove. The liquid inlet and outlet plate unit with an integrated structure is arranged, so that the structural design of an electrolyte pipeline is more flexible, the preparation process difficulty is reduced, the integration degree is improved and the application is expanded; an accommodating space is formed in the liquid inlet and outlet plate unit to embed the collector plate connecting part, so that the liquid inlet and outlet plate unit is hermetically connected with the liquid flow frame; the liquid flow frame is provided with liquid flow frame convex ribs, so that the liquid flow frame is in self-sealing connection with the diaphragm; a sealing ring groove with a sealing ring is formed in the liquid flow frame, so that the sealing connection effect of the liquid flow frame is enhanced; the pressure relief groove is formed, pressure is reduced, and the liquid leakage risk is reduced; the conductive composite material bipolar plate and the liquid flow frame are connected through laser welding; and therefore, the vanadium cell stack structure provided by the invention is stable, reliable, highly integrated, easy to manufacture and low in processing cost.

Description

technical field [0001] The invention belongs to the field of electrochemical energy storage and relates to a vanadium battery stack structure. Background technique [0002] The four main elements of the Energy Internet are power supply, power grid, load and energy storage. The importance of energy storage is self-evident. The construction of a strong and smart grid puts forward safe, efficient and reliable technical requirements for energy storage. Among many technical routes, vanadium batteries have become the most popular energy storage technology due to their advantages such as high safety, long service life, high energy conversion efficiency, and easy monitoring of charging and discharging states. One of the first choices for large-scale renewable energy storage. [0003] Generally, the seal of vanadium battery stack structure is divided into inner seal and outer seal. The inner seal consists of two parts, namely, the seal between the bipolar plate and the liquid flow f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0276H01M8/18H01M8/2483
CPCH01M8/0276H01M8/188H01M8/2483Y02E60/50Y02P70/50
Inventor 田丰汪保国宗卫峰周杰
Owner 杭州中科氢能科技有限公司
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