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Semi-solid lithium flow battery reactor, battery system and working method

A flow battery and semi-solid technology, applied in fuel cells, electrochemical generators, regenerative fuel cells, etc., can solve problems such as serious polarization, increased battery internal resistance, and battery short circuits

Active Publication Date: 2017-09-15
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

The semi-solid lithium flow battery reactor of the existing structure has the following problems: 1) In order to prevent short circuit, the battery reactor uses a thicker and less porous isolation layer, so that during the charge and discharge process, the positive and negative electrode suspensions The active material in the battery is embedded in the micropores of the isolation layer, blocking the isolation layer, increasing the internal resistance of the battery, and causing serious polarization; layer, which can improve the permeability of battery ions, but the nanoscale conductive particles in the positive and negative electrode suspensions are easy to penetrate into the isolation layer and form a bridge, resulting in a short circuit inside the battery

Method used

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  • Semi-solid lithium flow battery reactor, battery system and working method
  • Semi-solid lithium flow battery reactor, battery system and working method
  • Semi-solid lithium flow battery reactor, battery system and working method

Examples

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Embodiment 1

[0054] In this embodiment, a semi-solid lithium flow battery reactor 900 is provided, including a battery frame 400, a positive cavity 200, a negative cavity 401, a positive manifold 801, a positive manifold 802, a negative manifold 803, a negative manifold 804, Positive electrode liquid inlet 805, positive electrode liquid outlet 806, negative electrode liquid inlet 807, negative electrode liquid outlet 808, first positive electrode guide rod 809, second positive electrode guide rod 810, first negative electrode guide rod 811, second Negative guide rod 812 , first flow distribution cavity 901 ; second flow distribution cavity 902 ; first confluence cavity 903 ; second flow confluence cavity 904 .

[0055] The positive electrode cavity 200 includes two layers of porous positive electrode current collectors 103 with the same polarity, a separator 101, and two insulators 201. An insulator 201 is arranged between the edges of the two layers of porous positive electrode current col...

Embodiment 2

[0066] In this embodiment, several cavity heights of the positive electrode cavity 200, the negative electrode cavity 401 and the isolation cavity 102 are provided, as shown in Table 1:

[0067] Table 1 Cavity Heights of Positive Electrode Chamber 200, Negative Electrode Chamber 401, and Isolation Chamber 102

[0068] serial number

[0069] Other content of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0071] In this embodiment, several types of materials for the separator 101, the porous positive electrode collector 103 and the porous negative electrode collector 104 are provided, as shown in Table 2:

[0072] Table 2 Composition of separator, porous positive current collector and porous negative current collector material

[0073]

[0074] Other content of this embodiment is the same as that of Embodiment 1.

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Abstract

The invention provides a semi-solid lithium flow battery reactor. The semi-solid lithium flow battery reactor comprises a battery frame and an electrode cavity. The battery frame is a cuboid with the hollow interior. The electrode cavity comprises an anode cavity and a cathode cavity. The electrode cavity is filled with continuously or intermittently flowed electrode suspension liquid. A straight-through insulation cavity is installed between the anode cavity and the cathode cavity. The height of the insulation cavity is 0.1-1 mm, and the interior is filled with intermittently flowed electrolyte. The invention further provides an electrolyte circulating system based on the battery reactor and a working method. Through the pressure of the electrolyte in the insulation cavity to a porous current collector is regulated by the electrolyte circulating system, the situation of the battery micro-short or polarization increase can be solved, the battery polarization can be effectively reduced, and the battery safety is improved.

Description

technical field [0001] The invention belongs to chemical energy storage battery technology, and in particular relates to a semi-solid lithium flow battery reactor, a battery reactor control system and a working method. Background technique [0002] Semi-solid lithium flow battery is a newly developed electrochemical energy storage battery technology. It combines the advantages of lithium ion battery and flow battery. A new type of secondary battery with low cost and high safety. 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. [0003] The semi-solid lithium flow battery reactor provides a place for the mutual conversion of electrical energy and chemical energy. It is the core device of the semi-solid lithium flow battery energy storage system and plays an important role in battery sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0202H01M8/0247H01M8/18
CPCH01M8/0202H01M8/0247H01M8/188Y02E60/50
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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