Integrated cross-flow lithium flow battery reactor

A liquid flow battery and reactor technology, applied in the direction of fuel cells, battery pack components, electrochemical generators, etc., can solve the problem of stacked structure, heavy weight of end plates and tie rods, reduction of battery reactor weight specific power, and impact on battery Reactor service life and other issues, to achieve the effect of reducing battery cost, convenient assembly, and improving safety

Active Publication Date: 2019-03-08
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 existing flow battery reactor is mainly composed of several parts stacked on each other. In order to ensure the tightness of the battery reactor, the layers need to be bonded by a corrosion-resistant adhesive, and at the same time, it is necessary to install There are end plates, which are equipped with pull rods and springs or screws to lock the end plates to obtain the required locking force. This stacked locking structure has the following problems: 1. The locking force needs to meet the force required for the reactor seal at the same time 1. The support force required by the laminated structure and the compensation force after thermal expansion and contraction, and if one of the forces cannot be satisfied, it will cause a hidden danger of sealing, which greatly affects the service life of the battery reactor; 2. The laminated structure, end plates and The weight of the tie rod is relatively large, which reduces the weight specific power of the battery reactor; 3. The battery assembly process is complicated and the sealing is poor

Method used

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  • Integrated cross-flow lithium flow battery reactor
  • Integrated cross-flow lithium flow battery reactor
  • Integrated cross-flow lithium flow battery reactor

Examples

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Embodiment 1

[0038] In this embodiment, a 1kW-10kW integrated cross-flow lithium flow battery reactor 500 is provided, including a battery frame 100, an isolation window 200, a positive electrode manifold 300, a negative electrode manifold 400, a positive manifold 507, and a negative manifold 508 , positive electrode guide rod 501 , negative electrode guide rod 502 , positive electrode liquid inlet 503 , positive electrode liquid outlet 505 , negative electrode liquid inlet 504 , and negative electrode liquid outlet 506 .

[0039] Wherein, the battery frame 100 is made of polytetrafluoroethylene insulating and corrosion-resistant material, and its dimensions are: 800 mm in length, 500 mm in width, and 500 mm in height. The opposite sides A-A of the battery frame 100 1 There are 100 pairs of straight-through empty slots 101 for accommodating the isolation windows 200, and the 100 isolation windows 200 are arranged and inserted into the straight-through empty slots 101 of the battery frame 1...

Embodiment 2

[0051] In this embodiment, the isolation window 200 includes a "back" type window 205 and a bipolar isolation layer located in the hollow between two "back" type windows 205, wherein the bipolar isolation layer is composed of the isolation layer 201 and The porous positive electrode current collecting layer 202 and the porous negative electrode current collecting layer 203 located on both sides of the isolation layer 201 and in close contact with the isolation layer 201 are composed.

[0052] Wherein, the isolation layer 201 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, while the lithium ions in the electrolyte or gel electrolyte can freely pass through, and its thickness is 0.2 mm. Both the porous positive electrode current collecting layer 202 and the porous negative electrode current collecting layer 203 are ion / electron mixed conductive layers through ...

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Abstract

The invention provides an integrated cross-flow lithium flow battery reactor, which includes a battery frame and an isolation window. The battery frame is a hollow cuboid inside, and the two sides A-A 1 There are several pairs of straight-through empty slots for accommodating the isolation windows, and the plurality of isolation windows are arranged and inserted into the straight-through empty slots in the order in which the current collector layers of the same polarity are placed relative to each other to form alternately spaced positive and negative reaction chambers. Cavity; at A‑A 1 There is a positive electrode runner groove between the two straight-through empty grooves forming the positive electrode reaction chamber, and the B-B 1 A negative electrode runner groove is arranged between the two straight-through empty grooves forming the negative electrode reaction chamber. The battery reactor adopts an integrated design, avoiding the use of locking force to seal and fix, and will not cause sealing hazards due to uneven force. At the same time, the weight of end plates and tie rods is saved, and the power-to-weight ratio of the battery reactor is relatively improved. , and the battery reactor is simple to manufacture and easy to assemble.

Description

technical field [0001] The invention belongs to the field of electrochemical energy storage batteries, in particular to a lithium liquid flow battery reactor. Background technique [0002] Lithium flow battery is a newly developed electrochemical battery technology. It combines the advantages of lithium ion battery and flow battery. High safety 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. [0003] The lithium flow battery reactor provides a place for the mutual conversion of electrical energy and chemical energy. It is the core device of the lithium flow battery energy storage system and has an important impact on the performance of the battery system such as cost, battery power, energy efficiency, and cycle life. The existing flow battery reactor is mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/10H01M8/0256
CPCH01M8/0256H01M50/20Y02E60/50Y02E60/10
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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