Electrolyte container capable of automatically controlling pressure

Abstract

An electrolyte container capable of automatically controlling pressure relates to the technical field of flow batteries, comprises an electrolyte container, and a liquid outlet pipe and a liquid return pipe which are connected with the electrolyte container, and is characterized in that the electrolyte container comprises a bottle body and a bottle cap which is in threaded connection with the bottle body; the liquid outlet pipe and the liquid return pipe are arranged on the bottle cap; an air outlet pipe assembly and an air inlet pipe communicated with the bottle cap are arranged at the top of the bottle cap; the air outlet pipe assembly comprises a conical pipe body communicated with the top of the bottle cap, a pipe cap arranged at the top of the conical pipe body, a floating ball arranged in the conical pipe body and an air outlet pipe connected to the position of the floating ball of the conical pipe body. A vent hole is formed in the pipe cap; a pipe plug is arranged at the top of the air inlet pipe. Through the air outlet pipe assembly, the sealing effect can be achieved, and the pressure in the electrolyte container can be adjusted; air in the electrolyte container can be effectively replaced by injecting nitrogen into the air inlet pipe, so that the possibility that the electrolyte is in contact with the air to react is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid flow batteries, in particular to an automatic pressure-controlled electrolyte container. Background Art

[0002] As a new, high-capacity energy storage technology, liquid flow batteries have become a crucial addition to grid peak-shaving storage due to their safety, independently configurable power and capacity, long service life, and environmental friendliness. Flow batteries can effectively increase the capacity for renewable energy generation and improve energy efficiency, demonstrating broad application prospects in areas such as new energy access and smart grid development.

[0003] In the research and application of flow batteries, electrolyte storage has become a key link. To protect the electrolyte from the influence of external air and avoid unnecessary chemical reactions with components in the air, sealed containers are usually used to store the electrolyte. However, traditional sealed containers have the following two major problems:

[0004] Residual air inside the container: Even if a sealed container is used, there may still be a certain amount of air inside the container, which may cause the electrolyte to react with oxygen and other components in the air, thereby affecting the stability of the electrolyte and battery performance.

[0005] Gases generated during charging and discharging cause pressure to increase: Liquid flow batteries generate gases during the charging and discharging process. These gases accumulate inside the sealed container, causing the gas pressure to rise. If they are not released in time, they may cause damage to the container or a safety accident. Utility Model Content

[0006] In order to make up for the above-mentioned deficiencies, the utility model provides an electrolyte container with automatic pressure control.

[0007] The utility model is realized through the following technical scheme: an automatic pressure-controlled electrolyte container, comprising an electrolyte container, a liquid outlet pipe and a liquid return pipe connected to the electrolyte container, and its technical key points are: the electrolyte container comprises a bottle body and a bottle cap threadedly connected to the bottle body; the liquid outlet pipe and the liquid return pipe are arranged on the bottle cap; an air outlet pipe assembly and an air inlet pipe connected thereto are arranged on the top of the bottle cap; the air outlet pipe assembly comprises a conical tube body connected to the top of the bottle cap, a pipe cap arranged on the top of the conical tube body, a float arranged inside the conical tube body, and an air outlet pipe connected to the position of the float of the conical tube body; the middle part of the conical tube body is a funnel-shaped structure, and the float is placed in the funnel-shaped structure to close the funnel-shaped structure; a vent is provided on the pipe cap; and a pipe plug is provided on the top of the air inlet pipe.

[0008] Furthermore, the bottom end of the liquid outlet pipe is close to the bottom of the bottle body.

[0009] Furthermore, the pipe cap is threadedly connected to the conical pipe body.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] Eliminate residual air inside the container: By injecting nitrogen into the air inlet pipe, the air inside the electrolyte container can be effectively replaced, avoiding unnecessary chemical reactions between the electrolyte and oxygen and other components in the air, thereby improving the stability of the electrolyte and battery performance.

[0012] Automatically regulates internal container pressure: The exhaust pipe assembly is designed to automatically regulate internal container pressure. When the pressure inside the container rises due to gas generated during charging and discharging, the float inside the conical tube is lifted, allowing excess gas to be discharged through the exhaust pipe, thereby maintaining internal container pressure within a safe range and avoiding safety hazards caused by excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the use state of the utility model.

[0015] Explanation of the main component numbers in the figure: 1. Bottle body; 2. Bottle cap; 3. Liquid outlet pipe; 4. Liquid return pipe; 5. Air outlet pipe assembly; 501. Conical tube body; 502. Tube cap; 503. Float; 504. Air outlet pipe; 6. Air inlet pipe; 601. Pipe plug; 7. Liquid flow battery; 701. Battery input pipe; 702. Battery output pipe; 8. Pump.

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The other drawings obtained are all within the scope of protection required by the present invention. DETAILED DESCRIPTION

[0017] The following combination Figure 1-2 , the contents of the utility model are described in detail through specific embodiments. Example

[0018] The automatic pressure-controlled electrolyte container comprises an electrolyte container, a liquid outlet pipe 3 and a liquid return pipe 4 connected to the electrolyte container, wherein: the electrolyte container comprises a bottle body 1 and a bottle cap 2 threadedly connected to the bottle body; the liquid outlet pipe and the liquid return pipe are arranged on the bottle cap; an air outlet pipe assembly 5 and an air inlet pipe 6 are arranged at the top of the bottle cap and connected thereto; the air outlet pipe assembly comprises a conical tube body 501 connected to the bottle cap, a tube cap 502 arranged at the top of the conical tube body, a float 503 arranged inside the conical tube body, and an air outlet pipe 504 connected to the float position of the conical tube body; the middle portion of the conical tube body is a funnel-shaped structure, and the float is placed in the funnel-shaped structure to seal the funnel-shaped structure; a vent is provided on the tube cap; and a pipe plug 601 is provided at the top of the air inlet pipe.

[0019] Preferably, the bottom end of the liquid outlet pipe 3 is close to the bottom of the bottle body 1 to ensure that the electrolyte can be completely discharged. The pipe cap 502 is threadedly connected to the conical pipe body 501 to facilitate disassembly and maintenance.

[0020] The working principle of this utility model:

[0021] The battery input pipe 701 and the battery output pipe 702 of the liquid flow battery 7 are respectively sleeved on the liquid outlet pipe 3 and the liquid return pipe 4.

[0022] Calculate the required volume of electrolyte and transfer it to the electrolyte container.

[0023] The electrolyte is transported to the liquid inlet end of the flow battery through the battery input pipe 701 by using a pump 8, and then flows back to the electrolyte container from the liquid outlet end of the flow battery through the battery output pipe 702.

[0024] Remove the pipe plug 601, and connect the nitrogen source to the air inlet pipe 6 through a hose, use nitrogen to replace the gas in the electrolyte container 3-5 times, and then plug the pipe plug 601. In this way, the entire system is assembled and ready for operation.

[0025] When the gas pressure in the electrolyte container becomes too high due to the charge and discharge reaction, the float 503 inside the conical tube 501 will be pushed up, and the excess gas will be discharged through the outlet pipe 504, thereby maintaining the pressure in the container within a safe range.

[0026] The utility model can achieve a sealing effect and adjust the pressure in the electrolyte container through the air outlet pipe assembly; at the same time, by injecting inert gas (such as nitrogen) into the air inlet pipe, the air inside the electrolyte container can be effectively replaced, avoiding the possibility of reaction between the electrolyte and the air, and ensuring the safe operation of the system.

Claims

1. An automatic pressure-controlled electrolyte container, comprising an electrolyte container, a liquid outlet pipe and a liquid return pipe connected to the electrolyte container, characterized in that: The electrolyte container includes a bottle body and a bottle cap threadedly connected to the bottle body; the liquid outlet pipe and the liquid return pipe are arranged on the bottle cap; an air outlet pipe assembly and an air inlet pipe connected thereto are provided on the top of the bottle cap; the air outlet pipe assembly includes a conical tube body connected to the top of the bottle cap, a pipe cap provided on the top of the conical tube body, a float provided inside the conical tube body, and an air outlet pipe connected to the position of the float of the conical tube body; the middle part of the conical tube body is a funnel-shaped structure, and the float is placed in the funnel-shaped structure to close the funnel-shaped structure; a vent is provided on the pipe cap; and a pipe plug is provided on the top of the air inlet pipe.

2. The automatic pressure-controlled electrolyte container according to claim 1, characterized in that: The bottom end of the liquid outlet pipe is close to the bottom of the bottle body.

3. The automatic pressure-controlled electrolyte container according to claim 1, characterized in that: The pipe cap is threadedly connected to the conical pipe body.

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