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Lithium ion redox flow battery reactor

A liquid flow battery and lithium-ion technology, applied in the direction of fuel cell additives, regenerative fuel cells, fuel cell components, etc., can solve the deterioration of battery performance, overcharge or overdischarge of battery cells, inconsistent flow of electrode suspension, etc. problem, achieve the effect of simplifying the reactor structure, improving the consistency and improving the performance of the battery

Active Publication Date: 2016-04-13
南京竞予能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This use of the splitter chamber to distribute the electrode suspension to multiple battery reaction chambers for reaction and then confluence through the confluence chamber often leads to inconsistent flow rates of the electrode suspension in each battery reaction chamber, which can easily cause the battery cells in the battery reactor to overcharge or overdischarge, deteriorating battery performance

Method used

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  • Lithium ion redox flow battery reactor

Examples

Experimental program
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Embodiment 1

[0052] This embodiment provides a lithium-ion flow battery reactor 901 , including a bipolar separator 201 , a positive electrode conductor 401 a , a negative electrode conductor 401 b , a splitter plate 701 a , a manifold 701 b , an upper cover plate 801 , and a lower cover plate 802 . Among them, several bipolar separators 201, positive electrode conductors 401a, and negative electrode conductors 401b are alternately stacked up and down to form a battery cell group 601. The lithium ion flow battery reactor 901 is in accordance with the upper cover plate 801—the splitter plate 701a—the battery The unit group 601—the manifold 701b—the lower cover plate 802 are arranged in a manner, sealed by seals, and pressed by fasteners. The respective battery cells 501 are connected in parallel by metal wires.

[0053] In this embodiment, the bipolar separator 201 is composed of the isolation layer 103 and the positive electrode current collector layer 104 and the negative electrode curren...

Embodiment 2

[0061] In this embodiment, the bipolar separator 201 is composed of a separation layer 103 and a positive current collector layer 104 and a negative current collector layer 105 located on both sides of the separation layer 103 and in close contact with the separation layer 103 . Wherein, the isolation layer 103 is an electronic insulating layer that isolates the positive and negative current collector layers and prevents the electrons in the battery from freely passing through, but the lithium ions in the electrolyte or gel electrolyte can freely pass through, and its thickness is 0.5 mm. Both the positive electrode current collecting layer 104 and the negative electrode current collecting layer 105 are ion / electron mixed conductive layers through which both lithium ions and electrons can pass freely, and both have a thickness of 200 μm. The positive electrode current collector layer 104 and the negative electrode current collector layer 105 are placed on both sides of the isol...

Embodiment 3

[0071] In this embodiment, the lithium ion flow battery reactor 901 is equipped with a gas protection device, and the gas protection device is located on the outer periphery of the battery reaction chamber and the electrode suspension channel of the battery reactor, so that the entire battery reactor is protected by an inert gas atmosphere. In this way, water vapor and oxygen in the air can be blocked from entering the battery reactor and contacting the electrode suspension, so as to avoid deteriorating the performance of the battery. The inert gas is argon, and the pressure is 0.5MPa.

[0072] Other content of this embodiment is the same as that of Embodiment 1.

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Abstract

The invention provides a lithium ion redox flow battery reactor. The lithium ion redox flow battery reactor comprises a bipolar diaphragm, a positive electrode flow deflector and a negative electrode flow deflector, wherein the flow deflector is formed by multiple flowing channel ridges in a concentric-square-shaped frame; the flow deflector is divided into multiple parallel flow diversion channels by the flowing channel ridges; a liquid inlet and a liquid outlet are formed in the flow deflector frame corresponding to the two ends of each flow diversion channels; and the adjacent positive electrode flow deflectors or the adjacent negative electrode flow deflectors are communicated in series on the same side through communicating structures. According to the lithium ion redox flow battery reactor, each battery reaction cavity is equipped with a group of liquid inlets and liquid outlets, and the electrode suspension liquid communicating structure, so that electrode suspension liquid does not need to pass through a flow division cavity and a flow confluence cavity, instead, the electrode suspension liquid directly enters the electrode reaction cavity, so that the flow division cavity and the flow confluence cavity are eliminated, the consistency among the battery units is effectively improved, the battery performance is improved, and the structure of the reactor is greatly simplified.

Description

technical field [0001] The invention belongs to chemical energy storage battery technology, in particular to a lithium ion flow battery reactor. Background technique [0002] Lithium-ion flow battery is a newly developed electrochemical battery technology. It combines the advantages of lithium-ion battery and flow battery. It is a kind of output power and energy storage capacity independent of each other, with high energy density and low cost new secondary battery. It can not only be used as a supporting energy storage device for solar and wind power generation systems, but also as a peaking device for the power grid to improve the quality of power transmission and ensure the safety of the power grid. The use of chemical power sources for electrical storage and energy storage is not limited by geographical conditions, and it is expected to achieve large-scale energy storage, which has great social and economic value. [0003] In the previous lithium-ion flow battery reacto...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/04H01M8/18
CPCY02E60/50
Inventor 陈永翀张晓虎张艳萍张萍
Owner 南京竞予能源有限公司
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