CN-224231201-U - Air tightness testing device and system of flow battery pile

CN224231201UCN 224231201 UCN224231201 UCN 224231201UCN-224231201-U

Abstract

The utility model discloses an air tightness testing device and system of a flow battery pile. The air tightness testing device of the flow battery pile comprises an air transmission module, a pipe joint tool, a pressure detection module and a pressure detection module, wherein the air transmission module is used for outputting air, the pipe joint tool is connected between the air transmission module and the flow battery pile and used for inputting the air into the flow battery pile and keeping a first preset time, the pressure detection module is connected between the air transmission module and the pipe joint tool and used for inputting the air into the flow battery pile through the pipe joint tool and detecting an initial pressure of the air input into the flow battery pile and a test pressure after the first preset time, and the leakage state of the flow battery pile is judged according to the difference between the initial pressure and the test pressure. The technical scheme provided by the embodiment of the utility model solves the problem of poor air tightness detection effect.

Inventors

GAO YIXIAN
ZHOU ZHONGYU
DU XIAOMING
LIU RUI
WANG HAIBO

Assignees

纬景储能科技(临沂)有限公司

Dates

Publication Date: 20260512
Application Date: 20250611

Claims (10)

1. An air tightness testing device of a flow battery stack is characterized by comprising: the gas transmission module is used for outputting gas; The pipe joint tool is connected between the gas transmission module and the flow battery pile, and is used for inputting the gas into the flow battery pile and keeping the first preset time; The pressure detection module is connected between the gas transmission module and the pipe joint tool, and is used for inputting the gas into the flow battery pile through the pipe joint tool, detecting the initial pressure of the gas input into the flow battery pile and the test pressure after a first preset time, and judging the leakage state of the flow battery pile according to the difference between the initial pressure and the test pressure.
2. The device for testing the air tightness of the flow battery stack according to claim 1, wherein the flow battery stack comprises a first liquid inlet and a first liquid outlet, wherein the first liquid inlet and the first liquid outlet are communicated inside the flow battery stack; The pipe joint tool comprises a first airtight pipe joint and a first ventilation pipe joint tool, wherein the first airtight pipe joint is connected with the first liquid outlet and used for sealing the first liquid outlet, the first ventilation pipe joint tool is connected between the first liquid inlet and the pressure detection module, and the pressure detection module is used for inputting the gas into the first liquid inlet through the first ventilation pipe joint tool.
3. The tightness testing device of the flow battery pile according to claim 2, wherein the pressure detection module comprises a pressure sensor and a controller, a first pipeline is connected between the gas transmission module and a second pipeline, the second pipeline is also connected with the pipe joint tool, the pressure sensor is arranged in the second pipeline, the controller is connected with the pressure sensor, and the gas output by the gas transmission module is input into the second pipeline through the first pipeline and is input into the first liquid inlet through the second pipeline; The pressure sensor of the pressure detection module is used for collecting a first initial pressure of the gas input into the first liquid inlet and a first test pressure after a first preset time; The controller of the pressure detection module is used for generating a first pressure according to the difference between the first initial pressure and the first test pressure, and judging that the flow battery pile is internally leaked under the condition that the first pressure is greater than a first pressure threshold value.
4. The device for testing the air tightness of the flow battery stack according to claim 3, wherein the flow battery stack further comprises a second liquid inlet and a second liquid outlet, wherein the second liquid inlet and the second liquid outlet are communicated inside the flow battery stack; The pipe joint tool further comprises a second airtight pipe joint and a second vent pipe joint tool, the second airtight pipe joint is connected with the second liquid outlet and used for sealing the second liquid outlet, the second vent pipe joint tool is connected between the second liquid inlet and the pressure detection module, and the pressure detection module is used for inputting the gas into the second liquid inlet through the second vent pipe joint tool.
5. The device for testing the air tightness of the flow battery stack according to claim 4, wherein the first pipeline is connected between the air delivery module and a third pipeline, the third pipeline is also connected with the pipe joint tool, and the pressure sensor is also arranged in the third pipeline; The pressure sensor is used for collecting a second initial pressure of the gas input into the second liquid inlet and a second test pressure after a first preset time; The controller is used for generating a second pressure according to the difference between the second initial pressure and the second test pressure, and judging that the flow battery pile is internally leaked under the condition that the second pressure is larger than the second pressure threshold.
6. The device for testing the air tightness of the flow battery stack according to claim 5, wherein the gas output by the gas transmission module is input into the second pipeline and the third pipeline through the first pipeline, is input into the first liquid inlet through the second pipeline, and is input into the second liquid inlet through the third pipeline; The pressure sensor is used for collecting a third initial pressure of the gas input into the first liquid inlet and a third test pressure after a first preset time; the device is also used for collecting a fourth initial pressure of the gas input into the second liquid inlet and a fourth test pressure after a first preset time; The controller is used for generating a third pressure according to the difference between the third initial pressure and the third test pressure, generating a fourth pressure according to the difference between the fourth initial pressure and the fourth test pressure, and judging that the flow battery pile leaks outwards under the condition that the third pressure is higher than a third pressure threshold value and/or the fourth pressure is higher than the third pressure threshold value.
7. The tightness testing device of the flow battery stack according to claim 2, wherein the first vent pipe joint tool comprises a first pipe joint and a first vent joint; the air outlet end of the first pipe joint is used for air outlet, the air inlet end of the first pipe joint is connected with the air outlet end of the first ventilation joint, and the first ventilation joint is connected with the pressure detection module; And the air inlet end of the first pipe joint is in hot melt connection with the air outlet end of the first ventilation joint.
8. The device for testing the air tightness of the flow battery stack according to claim 4, wherein the second vent pipe joint tool comprises a second pipe joint and a second vent joint; The air outlet end of the second pipe joint is used for air outlet, the air inlet end of the second pipe joint is connected with the air outlet end of the second air-through joint, and the second air-through joint is connected with the pressure intensity detection module; And the air inlet end of the second pipe joint is in hot melt connection with the air outlet end of the second air inlet joint.
9. The tightness testing device of the flow battery stack according to claim 1, wherein the pressure detection module comprises an air tightness detector; The air delivery module comprises an air compressor.
10. A gas tightness test system of a flow battery stack, which comprises a power supply and a gas tightness test device of the flow battery stack according to any one of claims 1-9.

Description

Air tightness testing device and system of flow battery pile Technical Field The utility model relates to the technical field of flow batteries, in particular to an air tightness testing device and system of a flow battery stack. Background The galvanic pile is a core component of energy conversion equipment such as a flow battery, and the performance of the galvanic pile directly influences the energy conversion efficiency and the stability of the whole system. Poor air tightness of the galvanic pile can lead to leakage of reaction liquid, so that not only is the energy conversion efficiency reduced, but also potential safety hazards can be caused. Therefore, the air tightness test of the electric pile is a necessary step to ensure the performance and safety thereof. However, the existing air tightness testing device is complex in detection operation, low in air tightness evaluation accuracy and poor in detection effect. Disclosure of utility model The utility model provides a device and a system for testing the air tightness of a flow battery pile, which are used for solving the problem of poor air tightness detection effect. According to an aspect of the present utility model, there is provided an air tightness testing device of a flow battery stack, including: the gas transmission module is used for outputting gas; The pipe joint tool is connected between the gas transmission module and the flow battery pile, and is used for inputting the gas into the flow battery pile and keeping the first preset time; The pressure detection module is connected between the gas transmission module and the pipe joint tool, and is used for inputting the gas into the flow battery pile through the pipe joint tool, detecting the initial pressure of the gas input into the flow battery pile and the test pressure after a first preset time, and judging the leakage state of the flow battery pile according to the difference between the initial pressure and the test pressure. Optionally, the flow battery stack comprises a first liquid inlet and a first liquid outlet, wherein the first liquid inlet and the first liquid outlet are communicated in the flow battery stack; The pipe joint tool comprises a first airtight pipe joint and a first ventilation pipe joint tool, wherein the first airtight pipe joint is connected with the first liquid outlet and used for sealing the first liquid outlet, the first ventilation pipe joint tool is connected between the first liquid inlet and the pressure detection module, and the pressure detection module is used for inputting the gas into the first liquid inlet through the first ventilation pipe joint tool. Optionally, the pressure detection module comprises a pressure sensor and a controller, a first pipeline is connected between the gas transmission module and a second pipeline, the second pipeline is also connected with the pipe joint tool, the pressure sensor is arranged in the second pipeline, and the controller is connected with the pressure sensor; The pressure sensor of the pressure detection module is used for collecting a first initial pressure of the gas input into the first liquid inlet and a first test pressure after a first preset time; The controller of the pressure detection module is used for generating a first pressure according to the difference between the first initial pressure and the first test pressure, and judging that the flow battery pile is internally leaked under the condition that the first pressure is greater than a first pressure threshold value. Optionally, the flow battery stack further comprises a second liquid inlet and a second liquid outlet, wherein the second liquid inlet and the second liquid outlet are communicated in the flow battery stack; The pipe joint tool further comprises a second airtight pipe joint and a second vent pipe joint tool, the second airtight pipe joint is connected with the second liquid outlet and used for sealing the second liquid outlet, the second vent pipe joint tool is connected between the second liquid inlet and the pressure detection module, and the pressure detection module is used for inputting the gas into the second liquid inlet through the second vent pipe joint tool. Optionally, the first pipeline is connected between the gas transmission module and a third pipeline, the third pipeline is further connected with the pipe joint tool, and the pressure sensor is further arranged in the third pipeline; the gas output by the gas transmission module is input into the third pipeline through the first pipeline and is input into the second liquid inlet through the third pipeline; The pressure sensor is used for collecting a second initial pressure of the gas input into the second liquid inlet and a second test pressure after a first preset time; The controller is used for generating a second pressure according to the difference between the second initial pressure and the second test pressure, and judging that the flow battery pile is