Balancing device for zinc-bromine flow battery positive and negative electrolyte tanks
By installing sensors and a control system inside the positive and negative electrolyte tanks of the zinc-bromine flow battery, the liquid level and pressure are balanced, solving the electrolyte leakage problem and improving the battery's stability and lifespan.
CN224384270UActive Publication Date: 2026-06-19TANGSHAN SHENGNENG TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TANGSHAN SHENGNENG TECH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
In existing zinc-bromine flow batteries, the internal pressure of the positive and negative electrode electrolyte tanks is uneven, which leads to electrolyte leakage and affects battery performance and lifespan.
Method used
Pressure sensors and level sensors are installed inside the positive and negative electrolyte tanks. Pipelines and valves are controlled by a PLC controller to balance the electrolyte level and pressure. The electrolyte is mixed by a mixer, and the pressure is regulated by an exhaust valve to ensure stability inside the tank.
Benefits of technology
It achieves a balance of pressure and liquid level in the positive and negative electrolyte tanks, reduces electrolyte leakage, and improves battery performance and lifespan.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224384270U_ABST
Abstract
This invention relates to the field of battery manufacturing technology, specifically a balancing device for the positive and negative electrolyte tanks of a zinc-bromine flow battery. The invention uses pressure and level sensors to detect the internal pressure and level of the positive and negative electrolyte tanks, respectively. When the levels in the positive and negative electrolyte tanks are inconsistent, a control valve on the balancing pipeline opens, allowing electrolyte from the tank with the higher level to flow to the tank with the lower level, thus balancing the levels. After balancing, the electrolyte pressure output by the circulation pump from the positive and negative electrolyte tanks is essentially equal, and the pressure difference between the electrolyte entering the battery stack and the diaphragm and electrode plates tends to zero. By setting up upper and lower pipelines and a mixer, the electrolytes in the positive and negative electrolyte tanks are mixed before flowing, preventing uneven bromine concentration inside the tanks from affecting the lifespan of the zinc-bromine flow battery.
Need to check novelty before this filing date? Find Prior Art