Search

CN-121983611-A - Electric frame mounting structure of flow battery

CN121983611ACN 121983611 ACN121983611 ACN 121983611ACN-121983611-A

Abstract

The invention relates to a frame mounting structure of a flow battery, which comprises a frame body, a mounting piece and a fixing layer, wherein the frame body comprises an electrode cavity, a flow channel and a mounting groove, the electrode cavity is communicated with the thickness direction of the frame body, the mounting groove is arranged around the periphery of the electrode cavity, the mounting piece is arranged in the mounting groove and is provided with a first surface and a second surface which are opposite, the second surface of the mounting piece is contacted with the bottom surface of the mounting groove, the fixing layer is in an annular shape, the fixing layer is arranged at the edge of the first surface of the mounting piece, the fixing layer is provided with a flow guide groove, a plurality of raised flow guide blocks are arranged in the flow guide groove at intervals, and the flow guide groove is respectively communicated with the flow channel and the electrode cavity, wherein the fixing layer is in sealing adhesion with the first surface of the mounting piece and the inner side wall of the mounting groove so as to fix the mounting piece in the mounting groove. According to the invention, through the sealing and bonding design of the fixing layer, the traditional laser welding connection mode is replaced, the sealing reliability is effectively improved, the leakage risk is reduced, and the production difficulty and the production cost can be effectively reduced.

Inventors

  • LI JIAN

Assignees

  • 东莞市鸿坚新能源科技有限公司

Dates

Publication Date
20260505
Application Date
20260202

Claims (10)

  1. 1. An electric frame mounting structure of a flow battery, comprising: The frame body comprises an electrode cavity, a runner and a mounting groove, wherein the electrode cavity penetrates through the frame body in the thickness direction, and the mounting groove is arranged around the periphery of the electrode cavity; the mounting piece is arranged in the mounting groove and is provided with a first surface and a second surface which are opposite, and the second surface of the mounting piece is contacted with the bottom surface of the mounting groove; the fixing layer is in an annular shape, the fixing layer is arranged at the edge of the first surface of the mounting piece, guide grooves are formed in the fixing layer, a plurality of raised guide blocks are arranged in the guide grooves at intervals, and the guide grooves are respectively communicated with the flow channel and the electrode cavity; wherein, the fixed layer with the first face of installed part and the inside wall sealing bond of mounting groove to with the installed part is fixed in the mounting groove.
  2. 2. The structure according to claim 1, wherein the frame and the fixing layer are made of plastic and/or a modified material obtained by modifying plastic.
  3. 3. The frame mounting structure of a flow battery according to claim 1, wherein the fixing layer is obtained by injection molding.
  4. 4. The electric frame mounting structure of the flow battery according to claim 1, wherein the frame body is provided with a diversion groove, and the diversion groove is positioned between the flow channel and the diversion groove and is respectively communicated with the flow channel and the diversion groove; The flow distribution groove is internally provided with a flow distribution block, two sides of the flow distribution block form a first opening communicated with the flow distribution groove, the flow distribution block is provided with a convex and conical flow distribution part, and the tip end part of the flow distribution part points to the joint of the flow channel and the flow distribution groove.
  5. 5. The electric frame mounting structure of the flow battery according to claim 4, wherein a diversion trench is correspondingly arranged at each first opening, the diversion block opposite to the first opening in the diversion trench is provided with a diversion part, the diversion part is conical, and the tip part of the diversion part points to the first opening.
  6. 6. The electric frame mounting structure of the flow battery according to claim 4, wherein a plurality of second openings are arranged at intervals on one side of the diversion trench away from the diversion trench, and the second openings are communicated with the electrode cavity.
  7. 7. The electric frame mounting structure of the flow battery according to claim 1, wherein an annular groove is formed in the frame body, the electrode cavity and the mounting groove are located on the annular inner side of the annular groove, and a plurality of through holes are formed in the annular groove at intervals.
  8. 8. The electrical frame mounting structure of the flow battery according to claim 7, wherein the frame body is provided with a first liquid through hole and a second liquid through hole, the first liquid through hole and the second liquid through hole are located between the electrode cavity and the annular groove, and the second liquid through hole is communicated with the flow channel.
  9. 9. The electric frame mounting structure of the flow battery according to claim 8, wherein a sealing groove is formed in the frame body, two ends of the sealing groove are communicated with the annular groove, a sealing area is enclosed between the sealing groove and the annular groove, and the first liquid passing hole is located in the sealing area.
  10. 10. The electrical frame mounting structure of the flow battery according to claim 9, wherein a plurality of first liquid through holes are provided, and each first liquid through hole is correspondingly provided with a sealing groove.

Description

Electric frame mounting structure of flow battery Technical Field The invention relates to the field of flow batteries, in particular to an electric frame mounting structure of a flow battery. Background The flow battery is used as an energy storage device with long-term energy storage, safety and stability characteristics, and has wide application prospects in the fields of new energy power generation matched energy storage, power grid peak regulation, frequency modulation and the like. The electric frame is used as a core structural component of the flow battery, key installation parts such as a bipolar plate and an ion membrane are required to be accurately installed in the electric frame, and the installation stability and the sealing reliability of the installation parts directly determine the electrolyte isolation effect, the electrochemical reaction efficiency and the long-term operation stability of the battery. At present, the main stream flow battery electric frame, the bipolar plate and the ion membrane are installed and fixed in a laser welding mode. Specifically, the bipolar plate or the ion membrane is aligned and placed in a preset mounting area of the electric frame, and then welded along the joint edge by laser, so that the mounting piece and the electric frame form an integrated connection structure. However, the existing laser welding installation mode has technical defects which are difficult to overcome, and the long-term reliable operation of the flow battery is seriously affected. On one hand, the flow battery frame is made of plastic materials, so that the heat resistance is poor, the high temperature generated in the laser welding process easily causes softening deformation of the welding position of the frame, after the welding is completed and cooled, small gaps are easily generated at the joint of the frame, the bipolar plate and the ion membrane due to obvious difference in material shrinkage rate of the frame and the ion membrane after the frame is shrunk, the gaps can damage the sealing performance between the frame and the mounting piece, electrolyte leakage is caused, the energy conversion efficiency of the battery is reduced, potential safety hazards such as internal short circuit and part corrosion of the battery are possibly caused, the reliability of battery operation is greatly reduced, in addition, the laser welding mode has high requirements on equipment precision, special high-precision laser welding equipment is required to be equipped, the welding process parameters are complicated to regulate and control, and the production investment and the production difficulty are increased. On the other hand, the existing mounting structure lacks the specific electrolyte diversion design, and the electrolyte easily appears the uneven problem of distribution in the in-process of entering the electrode chamber through the electric frame runner, leads to the regional excessive and excessive reaction of electrolyte of electrode, and the regional insufficient and insufficient reaction of electrolyte of part, and then influences holistic electrochemical reaction efficiency and the wholeness ability of battery. Disclosure of Invention In view of the above, the present invention provides an electric frame mounting structure of a flow battery to solve the above-mentioned problems in the prior art. The aim of the invention is achieved by the following technical scheme. The electric frame mounting structure of the flow battery comprises a frame body, a mounting piece, a fixing layer and a plurality of fixing layers, wherein the frame body comprises an electrode cavity, a flow channel and a mounting groove, the electrode cavity is communicated in the thickness direction of the frame body, the mounting groove is arranged around the periphery of the electrode cavity, the mounting piece is arranged in the mounting groove and is provided with a first surface and a second surface which are opposite, the second surface of the mounting piece is in contact with the bottom surface of the mounting groove, the fixing layer is in an annular shape, the fixing layer is arranged at the edge of the first surface of the mounting piece, the fixing layer is provided with flow guide grooves, a plurality of raised flow guide blocks are arranged in the flow guide grooves at intervals, the flow guide grooves are respectively communicated with the flow channel and the electrode cavity, and the fixing layer is in sealing adhesion with the first surface of the mounting piece and the inner side wall of the mounting groove so as to fix the mounting piece in the mounting groove. In the above scheme, the electrode cavity is used for supplying installed part and electrode installation, wherein, the installed part is bipolar plate or ionic membrane, installed part and mounting groove cooperate, its second face towards the tank bottom surface mounting of mounting groove in the mounting groove, the fixed layer is located