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CN-224232655-U - Redox flow battery diaphragm

CN224232655UCN 224232655 UCN224232655 UCN 224232655UCN-224232655-U

Abstract

The utility model discloses a redox flow battery diaphragm, which relates to the field of battery diaphragm devices and comprises an outer frame, an inner frame and a diaphragm, wherein the inner frame is suspended in the outer frame, a guide groove is formed in the inner side surface of the outer frame and close to the lower position, a rotating shaft is rotatably arranged on the outer surfaces of two sides of the inner frame and close to the upper position, the other end of the rotating shaft is rotatably connected with the inner side surface of the outer frame, a driven rod is fixedly arranged on the outer surfaces of two sides of the inner frame and close to the lower position, and a magnetic block is fixedly arranged on the other end of the driven rod. And a diaphragm is arranged in the inner frame. According to the utility model, the driven rod and the magnetic block can be adjusted in real time according to the flowing condition of the electrolyte and the ion concentration distribution through the back-and-forth swing of the diaphragm, so that the ion transmission path is optimized, the aggregation of ions on the surface of the diaphragm is reduced, the mechanical strength of the diaphragm can be increased, and the service life of the diaphragm is prolonged.

Inventors

  • GOU JIAN
  • MA HONGLI
  • ZHANG ZHONGHUA
  • WANG CONG
  • ZHANG YONG

Assignees

  • 中科能源材料科技(大连)有限公司

Dates

Publication Date
20260512
Application Date
20250523

Claims (6)

  1. 1. A redox flow battery diaphragm comprises an outer frame (1), an inner frame (2) and a diaphragm (4), and is characterized in that the inner frame (2) is suspended in the outer frame (1); A guide groove (101) is formed in the inner side surface of the outer frame (1) and close to the lower position; A rotating shaft (201) is rotatably arranged on the outer surfaces of two sides of the inner frame (2) and close to the upper position, and the other end of the rotating shaft (201) is rotatably connected with the inner side surface of the outer frame (1); The outer surfaces of two sides of the inner frame (2) are fixedly provided with driven rods (202) close to the lower positions, and the other ends of the driven rods (202) are fixedly provided with magnetic blocks (203); the inner frame (2) is internally provided with a diaphragm (4).
  2. 2. The redox flow battery membrane of claim 1, wherein the guide groove (101) is of a cylindrical design in the front-rear horizontal direction.
  3. 3. The redox flow battery membrane of claim 1, wherein the magnetic blocks (203) are of a spherical design and slide back and forth in the guide grooves (101).
  4. 4. The redox flow battery diaphragm according to claim 1, wherein sealing frames (3) are mounted on the front and rear surfaces of the outer frame (1) and the inner frame (2) in an adhesive manner.
  5. 5. The redox flow battery membrane of claim 1, wherein a limiting rod (204) is fixedly arranged inside the inner frame (2); the limiting rods (204) are arranged in a plurality and are staggered in front-back mode; the diaphragm (4) is limited by the limiting action of the limiting rod (204) and is distributed in the inner frame (2) in a wave shape.
  6. 6. A redox flow battery membrane as claimed in claim 1, characterized in that said membrane (4) is provided with protruding strips (402); The convex strips (402) are arranged in a plurality and are fully paved on the diaphragm (4), and the convex strips (402) are obliquely distributed; wherein holes (401) are formed in the diaphragm (4) and the protruding strips (402).

Description

Redox flow battery diaphragm Technical Field The utility model relates to the field of battery diaphragm devices, in particular to a redox flow battery diaphragm. Background With the increasing demand of energy and increasing importance on environmental protection, the storage and efficient utilization of renewable energy become the focus of global attention, and redox flow batteries are used as an efficient and flexible energy storage technology, and gradually have a brand-new angle in the energy storage field due to the advantages of independent energy and power design, long cycle life, deep charge and discharge and the like, however, the conventional redox flow batteries still face some technical challenges in practical application, especially in the aspect of diaphragm design. The diaphragm of the traditional redox flow battery is generally of a static design, the diaphragm is fixed inside the battery, dynamic adjustment cannot be carried out according to electrolyte flow and ion concentration distribution in the working process of the battery, the static diaphragm cannot adapt to the change of the electrolyte flow, ions are easily accumulated on the surface of the diaphragm, the internal resistance of the battery is increased, and the output power and the stability of the battery are reduced. Therefore, it is necessary to provide a redox flow battery separator to solve the above problems. Disclosure of utility model The utility model aims to provide a redox flow battery diaphragm, which solves the problems that the traditional diaphragm proposed in the background art cannot adapt to the change of the flow of electrolyte, ions are easily accumulated on the surface of the diaphragm, the internal resistance of the battery is increased, and the output power and the stability of the battery are reduced. In order to achieve the purpose, the utility model provides the technical scheme that the redox flow battery diaphragm comprises an outer frame, an inner frame and a diaphragm, wherein the inner frame is hung in the outer frame, and a guide groove is formed in the inner side surface of the outer frame and close to the lower position; The outer surfaces of the two sides of the inner frame are rotatably provided with rotating shafts close to the upper positions, the other ends of the rotating shafts are rotatably connected with the inner side surfaces of the outer frame, the outer surfaces of the two sides of the inner frame are fixedly provided with driven rods close to the lower positions, and the other ends of the driven rods are fixedly provided with magnetic blocks; and a diaphragm is arranged in the inner frame. Preferably, the guide groove is cylindrical in front-back horizontal direction. Preferably, the magnetic block is in a spherical design and slides back and forth in the guide groove. Preferably, sealing frames are mounted on the front and rear surfaces of the outer frame and the inner frame in an adhesive mode. Preferably, the inside fixed mounting of inside casing has the gag lever post, the gag lever post is provided with a plurality ofly, is the crisscross distribution around, the diaphragm receives the gag lever post spacing effect, is wavy distribution in inside casing. Preferably, the diaphragm is provided with protruding strips, the protruding strips are provided with a plurality of protruding strips and are fully paved on the diaphragm, the protruding strips are distributed in an inclined mode, and holes are formed in the diaphragm and the protruding strips. The utility model has the technical effects and advantages that: 1. The driven rod and the magnetic block are arranged and are matched with the external electromagnet, the magnetic block drives the driven rod and the lower half section of the inner frame to swing back and forth along the guide groove under the action of a magnetic field generated by the external electromagnet, and the diaphragm can be adjusted in real time according to the flowing condition of electrolyte and ion concentration distribution through the back and forth swing of the inner frame, so that an ion transmission path is optimized, the aggregation of ions on the surface of the diaphragm is reduced, and the ion transmission efficiency is improved. Meanwhile, the diaphragm is distributed in a wavy manner, and the surface of the diaphragm is provided with protruding strips which are distributed in an inclined manner, so that the surface area and an ion conduction channel of the diaphragm are further increased, the ion transmission efficiency is remarkably improved, the charging speed is increased, the energy loss is reduced, and the problems that the static diaphragm cannot adapt to electrolyte flow change and the ion conduction efficiency of the traditional diaphragm is low are solved; 2. The suspension type structure and the guide groove of the outer frame and the inner frame are arranged in the utility model, the outer frame provides stable support for the whole