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CN-224232658-U - Leakage current blocking device adopting pulsation liquid supply mode and flow battery applying leakage current blocking device

CN224232658UCN 224232658 UCN224232658 UCN 224232658UCN-224232658-U

Abstract

The utility model discloses a leakage current blocking device adopting a pulsation liquid supply mode and a flow battery applying the leakage current blocking device, the technical scheme includes that the device comprises a piston cylinder body, a liquid inlet pipeline for electrolyte to flow into the piston cylinder body, a liquid outlet pipeline for the electrolyte to flow out of the piston cylinder body, two-position two-way electromagnetic valves respectively arranged on two liquid inlet pipelines and two liquid outlet pipelines, an insulating piston sealed by the piston cylinder body to block electrolyte current, and limit switches arranged on two sides of the piston cylinder body and providing action signals for the two-position two-way electromagnetic valves. The reciprocating motion of the insulating piston is controlled by controlling the on-off of the corresponding electromagnetic valve so as to realize the pulsating liquid supply of the electrolyte, so that the electrolyte inlet electrolyte and the electrolyte outlet electrolyte are arranged on two sides of the insulating piston to block current. The utility model can thoroughly eliminate bypass leakage current, improve the efficiency of the flow battery system, reduce heat and enhance the reliability of the system. The structure is simple, the volume is small, and the device can be installed in a flow battery system in a modularized manner.

Inventors

  • ZHOU YANMING
  • CHEN DESHUAI
  • JIANG YIBING
  • LIU LUYAN
  • MENG YABO
  • Hou Jushang
  • LIU XIUYUN

Assignees

  • 青岛智电新能科技有限公司
  • 青岛拓维科技有限公司
  • 青岛鼎信通讯股份有限公司

Dates

Publication Date
20260512
Application Date
20250303

Claims (6)

  1. 1. The utility model provides an adopt leakage current blocking device of pulsation feed liquid mode, a serial communication port, including piston cylinder body (3.3), leakage current device feed liquor pipeline (3.1), leakage current device drain liquor pipeline (3.6), leak current blocking device feed liquor trunk line (3.1.1) that is connected with negative electrolyte drain liquor from pipeline (1.4.2) or positive electrolyte drain liquor from pipeline (1.4.2), leakage current blocking device feed liquor branch pipeline (3.1.2) that leakage current blocking device feed liquor trunk line (3.1.1) one out two, install fourth two-bit solenoid directional valve (3.10) between cavity 1 (QT 1) and leakage current blocking device feed liquor branch pipeline (3.1.2), install second two-bit solenoid directional valve (3.2) between cavity 2 (QT 2) and leakage current blocking device feed liquor branch pipeline (3.1.2), install two-bit solenoid directional valve (3.2) and leakage current blocking device (6) that two-bit solenoid directional valve (3.1.2) and cavity 2) are sealed with piston cylinder body (3.3) so as to play and block cavity 1 (QT 1) and cavity 2 (QT 2) two-bit solenoid directional valve (3.2), install between two-bit solenoid directional valve (3.6) and leakage current blocking device drain liquor pipeline (3.6) and install between cavity 1.2 and two-bit solenoid directional valve (3.6) and drain liquor branch pipeline (3.6) A first limit switch (3.4) and a second limit switch (3.9) which provide action signal commands for the first two-position two-way electromagnetic directional valve (3.2), the second two-position two-way electromagnetic directional valve (3.5), the third two-position two-way electromagnetic directional valve (3.7) and the fourth two-position two-way electromagnetic directional valve (3.10).
  2. 2. A leakage current blocking device according to claim 1, characterized in that said insulating piston (3.8) is sealed from said piston cylinder (3.3).
  3. 3. The leakage current blocking device adopting the pulsation liquid supply mode according to claim 1, wherein the first two-position two-way electromagnetic directional valve (3.2) and the third two-position two-way electromagnetic directional valve (3.7) are communicated and disconnected in a consistent state, the second two-position two-way electromagnetic directional valve (3.5) and the fourth two-position two-way electromagnetic directional valve (3.10) are communicated and disconnected in a consistent state, and the first two-position two-way electromagnetic directional valve (3.2) and the second two-position two-way electromagnetic directional valve (3.5) are communicated and disconnected in an opposite state.
  4. 4. The leakage current blocking device adopting the pulsation liquid supply mode according to claim 1, wherein the first limit switch (3.4) and the second limit switch (3.9) are arranged at two sides of the piston cylinder body (3.3) along the movement direction of the insulating piston (3.8).
  5. 5. The leakage current blocking device adopting the pulsation liquid supply mode according to claim 4, wherein after any one of the first limit switch (3.4) and the second limit switch (3.9) sends out a signal, the first two-position two-way electromagnetic directional valve (3.2), the second two-position two-way electromagnetic directional valve (3.5), the third two-position two-way electromagnetic directional valve (3.7) and the fourth two-position two-way electromagnetic directional valve (3.10) switch on/off states simultaneously.
  6. 6. A flow battery employing a leakage current blocking device, comprising the leakage current blocking device of any one of claims 1-5.

Description

Leakage current blocking device adopting pulsation liquid supply mode and flow battery applying leakage current blocking device Technical Field The utility model relates to the technical field of batteries, in particular to a leakage current blocking device adopting a pulsation liquid supply mode and a flow battery applying the leakage current blocking device. Background 1. The flow battery adopts electrolyte solution as an energy storage medium, the electric pile is used as a reaction place, the electrolyte solution is driven to flow in the electric pile through a circulating pump during charging, electric energy is converted into chemical energy through oxidation-reduction reaction during flowing and is stored in the electrolyte solution, and the reverse is carried out during discharging. The flow battery has the advantages of good reliability, low cost, high efficiency, green environmental protection and the like, and has huge application scenes. 2. The existing flow battery is large in scale, as shown in fig. 1, the electrolyte solution is generally supplied to the main pipeline through the circulating pump, the main pipeline is uniformly and continuously supplied with liquid to a plurality of galvanic piles through the branch pipelines for supplying liquid to the galvanic piles, the parallel connection mode is adopted in the branch pipelines for supplying liquid to the galvanic piles, and the serial connection mode is generally adopted in the circuit when the flow battery is charged and discharged. 3. The Chinese patent document (patent application number: CN 201310300685.7) discloses an invention of a pipeline structure of a flow battery system, and the patent increases the electrolyte resistance of a part of a public pipeline by distributing and prolonging the public pipeline between electric stacks so as to achieve the purpose of reducing leakage current and improving the energy efficiency of the flow battery system, but the pipeline is long, occupies large space, can only reduce the leakage current and cannot completely eliminate the leakage current. In conclusion, the device which has a simple structure and a small size and can thoroughly eliminate leakage current is of great significance. Disclosure of Invention Aiming at the defects and defects existing in the prior art, the utility model provides a leakage current blocking device adopting a pulsation liquid supply mode and a flow battery applying the leakage current blocking device, and the leakage current blocking device adopting the pulsation liquid supply mode is arranged in a liquid supply pipeline generating leakage in a flow battery system, so that the problems of efficiency reduction and heating of a multi-stack serial scheme of the flow battery circuit due to leakage current conduction system can be thoroughly eliminated, and the efficiency and reliability of the flow battery system are improved. The aim of the utility model can be achieved by the following technical scheme: A leakage current blocking device of a pulsation liquid supply mode comprises a piston cylinder body 3.3, a leakage current device liquid inlet pipeline 3.1, a leakage current device liquid outlet pipeline 3.6, a leakage current blocking device liquid inlet main pipeline 3.1.1 connected with a negative electrode electrolyte liquid outlet pipeline 1.3.2 or a positive electrode electrolyte liquid outlet pipeline 1.4.2, a leakage current blocking device liquid inlet branch pipeline 3.1.2 of which the leakage current blocking device liquid inlet main pipeline 3.1.1 is out of two, a fourth two-position electromagnetic reversing valve 3.10 arranged between a cavity 1QT1 and a leakage current blocking device liquid inlet branch pipeline 3.1.2, a second two-position two-way electromagnetic reversing valve 3.2 arranged between a cavity 2QT2 and the leakage current blocking device liquid inlet branch pipeline 3.1.2, an insulating piston 3.8 sealed with the piston cylinder body 3.3 to block electrolyte solution currents in two cavities of the cavity 1QT1 and the cavity 2, a second two-position electromagnetic reversing valve 3.7 arranged between the cavity 1QT1 and the leakage current blocking device liquid inlet branch pipeline 3.6.2, a second two-position electromagnetic reversing valve 3.7 arranged between the cavity 1QT1 and the leakage current blocking device liquid inlet branch pipeline 3.1.2, a second two-position electromagnetic reversing valve 3.5 and a leakage current limiting device arranged between the cavity 3.6.6.6 and a second electromagnetic reversing valve 3.6, and a leakage current limiting device arranged between the cavity 3.6.6 and a second electromagnetic reversing valve 3.6, and a signal limiting device arranged between the cavity 3.6.6 and the two-position electromagnetic reversing valve 3.6. The leakage current device liquid inlet pipeline 3.1 comprises a leakage current blocking device liquid inlet main pipeline 3.1.1 which is connected with a negativ