Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile

A liquid flow battery and electric stack technology, which is applied to fuel cell components, fuel cells, regenerative fuel cells, etc., can solve problems such as increasing electrolyte flow resistance, increasing battery polarization, and power scale constraints, achieving Effects of reducing polarization, reducing potential difference, and reducing energy loss

Inactive Publication Date: 2011-07-27
上海林洋储能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the researchers found that if the number of single cells in a single stack is too large, the electrolyte needs to flow in a longer flow channel, which will increase the flow resistance of the electrolyte, increase the power requirements of the pump, and increase the pump capacity. On the other hand, the elect

Method used

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  • Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile
  • Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile
  • Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile

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Embodiment 1

[0029] The multi-channel end plate is a steel plate with a thickness of 3cm, and the diameter of the electrolyte inlet and outlet is 2cm; the multi-channel insulating plate is a PE plate, and the diameter of the electrolyte channel hole is 2cm; The battery electrode area is the same; the number of single cells in the sub-stack is 10, the electrolyte guide frame is made of PE, the bipolar plate is a conductive plastic plate, and the electrolyte guide frame and the bipolar plate are laser welded. It is graphite felt with an area of ​​5000cm 2 , The diaphragm uses a cation exchange membrane, the thickness of the single cell is 1.5cm, and the power of the sub-stack is 5kW. The liquid flow separation frame is made of the same material as the electrolyte guide frame, and it is welded with the bipolar plate by laser. The capacity of the prepared all-vanadium ion redox flow battery is 20kWh. at 80mA / cm 2 Under the charging and discharging conditions of the battery, the voltage effi...

Embodiment 2

[0031] The multi-channel end plate is a steel plate with a thickness of 3cm, and the diameter of the electrolyte inlet and outlet is 2cm; the multi-channel insulating plate is a PE plate, and the diameter of the electrolyte channel hole is 2cm; The battery electrode area is the same; the number of single cells in the sub-stack is 20, the electrolyte guide frame is made of PE, the bipolar plate is a conductive plastic plate, the electrolyte guide frame and the bipolar plate are laser welded, and the electrodes It is graphite felt with an area of ​​8000cm 2 , The diaphragm is a cation exchange membrane, the thickness of the single cell is 1.5cm, and the power of the sub-stack is 10kW. The liquid flow separation frame is made of the same material as the electrolyte guide frame, and it is welded with the bipolar plate by laser. The capacity of the prepared all-vanadium ion redox flow battery is 40kWh. at 80mA / cm 2 Under the charging and discharging conditions of the battery, th...

Embodiment 3

[0033] The multi-channel end plate is a steel plate with a thickness of 3cm, and the diameter of the electrolyte inlet and outlet is 2cm; the multi-channel insulating plate is a PE plate, and the diameter of the electrolyte channel hole is 2cm; The battery electrode area is the same; the number of single cells in the sub-stack is 30, the electrolyte guide frame is made of PE, the bipolar plate is a conductive plastic plate, and the electrolyte guide frame and the bipolar plate are laser welded. It is graphite felt with an area of ​​4000cm 2 , The diaphragm is a cation exchange membrane, the thickness of the single cell is 1.5cm, and the power of the sub-stack is 10kW. The liquid flow separation frame is made of the same material as the electrolyte guide frame, and it is welded with the bipolar plate by laser. The capacity of the prepared all-vanadium ion redox flow battery is 40kWh. at 80mA / cm 2 Under the charging and discharging conditions of the battery, the voltage effic...

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Abstract

The invention provides a double-power liquid stream battery electric pile structure and a liquid stream battery containing the electric pile. The electric pile structure comprises two multi-runner end plates (1), two multi-runner insulation boards (2), two main stream collection plates (3), two sub-electric piles (4) and a liquid stream division plate (5), wherein, the electric pile is in a symmetrical structure, the liquid stream division plate (5) is arranged in the middle of the electric pile, and the left side and the right side of the electric pile are respectively provided with a sub-electric pile (4), a main stream collection plate (3), a multi-runner insulation board (2) and a multi-runner end plate (1) in turn; an independent electrolyte solution circulation system of single inlet liquid and outlet liquid is formed on each sub-electric pile; the length of the runner of the electrolyte solution in the electric pile is halved, thus the flow resistance of the electrolyte solution can be greatly reduced, the power consumption of the pump is reduced, the potential difference of the electrolyte solution in the runner can be decreased, the polarization of the battery is reduced, and the energy loss of the battery is reduced. Compared with single electric pile of the common liquid stream battery, the single battery number in the electric pile is doubled, the power can be doubled, and the energy efficiency of the liquid stream battery can not be reduced.

Description

technical field [0001] The invention relates to the field of manufacturing liquid flow batteries, in particular to the design and manufacture of the electric stack structure of the liquid flow battery. Background technique [0002] The increasing depletion of fossil energy and the serious environmental pollution caused by excessive use of fossil energy make the research and large-scale utilization of renewable energy an important strategy for energy security and sustainable development in all countries in the world. The power generation of renewable energy (such as wind energy, solar energy, ocean energy and small hydropower, etc.) is unstable and discontinuous. It is necessary to develop and build supporting energy storage systems to ensure the continuous and stable power generation and power supply of renewable energy, especially Perform peak regulation and frequency regulation for large-scale wind power grid connection to ensure the quality of power grid power generation....

Claims

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Application Information

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IPC IPC(8): H01M8/24H01M8/18H01M8/02H01M8/0258H01M8/2483
CPCY02E60/528Y02E60/50
Inventor 秦忠宝薛坤张国福周汉涛李佳
Owner 上海林洋储能科技有限公司
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