Electric pile sealing detection equipment and liquid flow electric pile sealing detection system

Abstract

The utility model relates to the technical field of flow battery pile sealing detection, discloses pile sealing detection equipment and a flow pile sealing detection system, and aims to provide pile chamber sealing detection equipment which does not affect the performance of an ionic membrane. The galvanic pile sealing detection equipment comprises a gas supply device, a first gas supply pipe, a leakage detection device and a second gas supply pipe which are connected in sequence. The galvanic pile sealing detection equipment further comprises at least two connecting joints and a plurality of detection plugs. The first ends of the at least two connecting joints are connected and communicated with the second air supply pipe, and the second ends of the connecting joints are used for being connected with the galvanic pile chamber. The detection plug is detachably connected with the second end of the connection joint. According to the galvanic pile sealing detection equipment, the sealing effect of the inner cavity of the flow battery galvanic pile can be detected through the compressed gas, the compressed gas cannot influence or damage the performance of an ion exchange membrane, and the galvanic pile sealing detection equipment has good universality in the detection mode.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of liquid flow battery stack sealing detection, and particularly relates to a stack sealing detection device and a liquid flow stack sealing detection system. BACKGROUND

[0002] A battery stack is a core component of a liquid flow battery. Since electrolyte needs to react in the interior of the battery stack during the charging and discharging process of the liquid flow battery, the interior of the battery stack needs to provide good sealing to avoid leakage of the electrolyte.

[0003] In the related technical solution, water is injected into the interior of the battery stack to simulate the actual sealing storage of the electrolyte, and the sealing performance of the interior of the battery stack is detected. However, since an ion membrane is arranged between the positive and negative chambers in the interior of the stack, the water injection detection will damage the ion membrane, thereby affecting the normal use of the battery stack.

[0004] If the water injection detection step is performed before the ion membrane is installed, the sealing effect of the ion membrane between the positive and negative chambers cannot be detected. Utility model content

[0005] The application aims to provide a stack sealing detection device and a liquid flow stack sealing detection system, and aims to provide a sealing performance detection device for a stack chamber without affecting the performance of the ion membrane.

[0006] To achieve the above-mentioned purpose, the application adopts the following technical solution:

[0007] In one aspect, some embodiments of the application provide a stack sealing detection device, which comprises a gas supply device, a first gas supply pipe, a leak detection device and a second gas supply pipe connected in sequence.

[0008] The stack sealing detection device further comprises at least two connecting joints and a plurality of detection plugs. The first ends of the at least two connecting joints are connected in conduction with the second gas supply pipe, and the second ends of the connecting joints are used for connecting the stack chambers. The detection plugs are detachably connected with the second ends of the connecting joints.

[0009] Beneficial effects: taking a liquid flow battery stack comprising a first liquid inlet, a first liquid outlet, a second liquid inlet and a second liquid outlet, two ends of a positive chamber being communicated with the first liquid inlet and the first liquid outlet, two ends of a negative chamber being communicated with the second liquid inlet and the second liquid outlet, and one positive chamber and one negative chamber being arranged in a separated manner by an ion exchange membrane as an example.

[0010] When the sealing of the flow battery stack is detected by the stack sealing detection device, one or two of the first liquid inlet, the first liquid outlet, the second liquid inlet and the second liquid outlet can be detachably connected with the second end of the connecting joint, so that the stack chamber (such as the positive electrode chamber and the negative electrode chamber) is connected and communicated with the leak detection device and the gas supply device, and the sealing of the positive electrode chamber, the negative electrode chamber and the internal space of the flow battery stack is detected by compressed gas.

[0011] And the arrangement of at least two connecting joints and a plurality of detection plugs makes the stack sealing detection device have better versatility, which can simultaneously detect the sealing of multiple stack chambers or detect the sealing of one stack chamber.

[0012] In the detection process, the sealing of the stack chamber is detected by the gas supply device to avoid the damage of the ion exchange membrane caused by the injection of liquid into the stack chamber for sealing detection. And the sealing of the stack chamber is detected by compressed gas, and there is no need to additionally discharge the gas in the stack chamber after the detection is completed, which further simplifies the sealing detection step.

[0013] In some embodiments, the leak detection device includes a gas pressure sensor, a detection body, a controller and a display. The detection body is provided with a detection cavity, an air inlet and an air outlet communicated with the detection cavity, the air inlet is connected with the first gas supply pipe, the air outlet is connected with the second gas supply pipe, and the gas pressure sensor is arranged in the detection cavity for detecting the air pressure value of the detection cavity. The gas pressure sensor is electrically connected with the controller. The display is electrically connected with the controller, and the display is at least used for displaying the air pressure parameter in the detection cavity.

[0014] In some embodiments, the controller includes a processing unit and a storage unit. The processing unit is electrically connected with the gas pressure sensor and the display. The storage unit is electrically connected with the processing unit for storing the air pressure parameter.

[0015] In some embodiments, the display is a touch display.

[0016] In some embodiments, the leak detection device is a gas pressure gauge.

[0017] In some embodiments, the stack sealing detection device further includes a valve device connected between the gas supply device and the leak detection device.

[0018] In some embodiments, the valve device is a one-way valve for preventing fluid from flowing from the leak detection device to the gas supply device.

[0019] In some embodiments, the valve device is an electrically controlled valve.

[0020] In some embodiments, the gas supply device is an air compressor.

[0021] In one aspect, some embodiments of the present application also provide a flow battery stack sealing detection system, comprising a flow battery stack, a plurality of stack plugs, and the stack sealing detection device in the previous aspect.

[0022] The flow battery stack is provided with a plurality of positive electrode chambers and a plurality of negative electrode chambers, and an ion exchange membrane is arranged between one positive electrode chamber and one negative electrode chamber. The flow battery stack is also provided with a first liquid inlet, a first liquid outlet, a second liquid inlet, and a second liquid outlet. One end of the positive electrode chamber is in communication with the first liquid inlet, and the other end of the positive electrode chamber is in communication with the first liquid outlet. One end of the negative electrode chamber is in communication with the second liquid inlet, and the other end of the negative electrode chamber is in communication with the second liquid outlet.

[0023] The first liquid inlet, the first liquid outlet, the second liquid inlet, and the second liquid outlet are detachably connected with the stack plugs. At least one of the first liquid inlet, the first liquid outlet, the second liquid inlet, and the second liquid outlet is detachably connected with the second end of the connecting joint.

[0024] Beneficial effects: Since the flow battery stack sealing detection system comprises the stack sealing detection device in the previous aspect, the flow battery stack sealing detection system comprises all the beneficial effects of the stack sealing detection device described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 A structural schematic diagram of a flow battery stack sealing detection system provided by an embodiment of the present application;

[0027] Figure 2 A structural schematic diagram of a flow battery stack sealing detection system provided by an embodiment of the present application; Figure 1 A structural schematic diagram of a flow battery stack sealing detection system provided by an embodiment of the present application;

[0028] Figure 3 A structural schematic diagram of a flow battery stack sealing detection system provided by an embodiment of the present application; Figure 1 A connection structure schematic diagram of the stack sealing detection device shown in the embodiment;

[0029] Figure 4 A connection structure schematic diagram of the stack sealing detection device shown in the embodiment; Figure 3 A structural schematic diagram of the leak detection device shown in the embodiment;

[0030] Figure 5 A circuit connection schematic diagram of the stack sealing detection device provided by an embodiment of the present application.

[0031] Reference signs:

[0032] 100, stack sealing detection device;

[0033] 10, gas supply device; 20, first gas supply pipe; 30, leak detection device; 31, air pressure sensor; 32, detection main body; 321, detection cavity; 322, air inlet; 323, air outlet; 33, controller; 331, processing unit; 332, storage unit; 34, display; 40, second gas supply pipe; 50, connection joint; 60, detection plug; 70, valve device;

[0034] 200, flow stack sealing detection system;

[0035] 210, flow battery stack; 211, positive electrode chamber; 212, negative electrode chamber; 213, ion exchange membrane; 214, first liquid inlet; 215, first liquid outlet; 216, second liquid inlet; 217, second liquid outlet;

[0036] 220, stack plug. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein without departing from the spirit of the present application, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] This application provides a fuel cell stack sealing testing device and a flow fuel cell stack sealing testing system, which are described below in conjunction with... Figures 1 to 5 This application provides a detailed description of the fuel cell stack sealing testing equipment and the liquid flow fuel cell stack sealing testing system, which are embodiments of the present application.

[0043] like Figure 1 As shown, the flow battery stack sealing test system 200 includes a flow battery stack 210 and a stack sealing test device 100. The sealing test device 100 is used to test the sealing performance of the internal space of the flow battery stack 210.

[0044] like Figure 2 As shown, the flow battery stack sealing detection system 200 includes a flow battery stack 210 and several stack plugs. The flow battery stack 210 has several positive electrode chambers 211 and several negative electrode chambers 212, separated by an ion exchange membrane 213. A cell unit is formed by sequentially filling the positive electrode chamber 211 and the negative electrode chamber 212 with positive and negative electrolytes.

[0045] With reference to the foregoing Figure 2 , the flow battery stack 210 is further provided with a first liquid inlet 214, a first liquid outlet 215, a second liquid inlet 216 and a second liquid outlet 217. One end of the positive electrode chamber 211 is in communication with the first liquid inlet 214, and the other end of the positive electrode chamber 211 is in communication with the first liquid outlet 215. So that the fluid such as positive electrode electrolyte flows between the first liquid inlet 214, the positive electrode chamber 211 and the first liquid outlet 215 in turn. One end of the negative electrode chamber 212 is in communication with the second liquid inlet 216, and the other end of the negative electrode chamber 212 is in communication with the second liquid outlet 217. So that the fluid such as negative electrode electrolyte flows between the second liquid inlet 216, the negative electrode chamber 212 and the second liquid outlet 217 in turn.

[0046] The first liquid inlet 214, the first liquid outlet 215, the second liquid inlet 216 and the second liquid outlet 217 are detachably connected with the stack head 220. So that the stack head 220 can block the first liquid inlet 214, the first liquid outlet 215, the second liquid inlet 216 and the second liquid outlet 217.

[0047] In order to facilitate the detection of the sealing property of the flow battery stack 210, as shown in Figure 1 and Figure 3 , the stack sealing detection equipment 100 comprises a gas supply device 10, a first gas supply pipe 20, a leak detection device 30 and a second gas supply pipe 40 connected in turn. The stack sealing detection equipment 100 further comprises at least two connecting joints 50 and a plurality of detection heads 60. The first end of the at least two connecting joints 50 is connected in communication with the second gas supply pipe 40, and the second end of the connecting joint 50 is used to connect the stack chamber (such as the positive electrode chamber and the negative electrode chamber). The detection head 60 is detachably connected with the second end of the connecting joint 50.

[0048] When the sealing property of the flow battery stack 210 shown in Figure 2 is detected by the stack sealing detection equipment 100. One or two of the first liquid inlet 214, the first liquid outlet 215, the second liquid inlet 216 and the second liquid outlet 217 can be detachably connected with the second end of the connecting joint 50, so that the stack chamber (such as the positive electrode chamber 211 and the negative electrode chamber 212) is connected in communication with the leak detection device 30 and the gas supply device 10, so as to detect the sealing property of the positive electrode chamber 211, the negative electrode chamber 212 and the internal space of the flow battery stack 210 by compressed gas.

[0049] For example, the first liquid outlet 215 and the second liquid outlet 217 are connected and sealed by the stack plug 220, one of the second ends of the connection joints 50 is connected with the first liquid inlet 214, the second ends of the other connection joints 50 are connected with the second liquid inlet 216, and the second ends of the other connection joints 50 are connected and sealed by the detection plug 60. The compressed gas is supplied to the positive electrode chamber 211 and the negative electrode chamber 212 through the gas supply device 10 and the leak detection device 30, and the change rate of the gas pressure in the positive electrode chamber 211 and the negative electrode chamber 212 is detected by the leak detection device 30 within a preset time. If the change rate of the gas pressure within the preset time is greater than a preset value, at least one of the positive electrode chamber 211 and the negative electrode chamber 212 is leaked. If the gas pressure is constant within the preset time, or the change rate of the gas pressure within the preset time is less than or equal to the preset value, the positive electrode chamber 211 and the negative electrode chamber 212 are well sealed, and the flow battery stack 210 is not leaked.

[0050] The first liquid inlet 214, the first liquid outlet 215 and the second liquid outlet 217 are connected and sealed by the stack plug 220, one of the second ends of the connection joints 50 is connected with the first liquid inlet 214, and the second ends of the other connection joints 50 are connected and sealed by the detection plug 60. The compressed gas is supplied to the positive electrode chamber 211 through the gas supply device 10 and the leak detection device 30, and the change rate of the gas pressure in the positive electrode chamber 211 is detected by the leak detection device 30 within a preset time. If the change rate of the gas pressure within the preset time is greater than a preset value, at least one of the positive electrode chamber 211 is poorly sealed. If the gas pressure is constant within the preset time, or the change rate of the gas pressure within the preset time is less than or equal to the preset value, the positive electrode chamber 211 is well sealed.

[0051] The first liquid inlet 214, the first liquid outlet 215 and the second liquid outlet 217 are connected and sealed by the stack plug 220, one of the second ends of the connection joints 50 is connected with the first liquid inlet 214, and the second ends of the other connection joints 50 are connected and sealed by the detection plug 60. The compressed gas is supplied to the positive electrode chamber 211 through the gas supply device 10 and the leak detection device 30, and the change rate of the gas pressure in the positive electrode chamber 211 is detected by the leak detection device 30 within a preset time. If the change rate of the gas pressure within the preset time is greater than a preset value, at least one of the positive electrode chamber 211 is poorly sealed. If the gas pressure is constant within the preset time, or the change rate of the gas pressure within the preset time is less than or equal to the preset value, the positive electrode chamber 211 is well sealed.

[0052] In the above detection process of the sealing performance, the first liquid inlet 214 and the first liquid outlet 215 can be flexibly replaced. The second liquid inlet 216 and the second liquid outlet 217 can be flexibly replaced without affecting the detection result.

[0053] When the liquid flow battery stack 210 is detected to be externally leaked, the positive electrode chamber 211 is better sealed and the negative electrode chamber 212 is worse sealed, that is, the negative electrode chamber 212 is externally leaked. When the liquid flow battery stack 210 is detected to be externally leaked, the positive electrode chamber 211 is worse sealed and the negative electrode chamber 212 is better sealed, that is, the positive electrode chamber 211 is externally leaked.

[0054] If the liquid flow battery stack 210 is detected to be not externally leaked, and at least one of the positive electrode chamber 211 and the negative electrode chamber 212 is worse sealed, that is, the corresponding stack chamber is internally leaked.

[0055] Therefore, the present application provides compressed gas through the gas supply device to detect the sealing performance of the stack chamber (such as the positive electrode chamber 211 and the negative electrode chamber 212), thereby avoiding the damage of the ion exchange membrane caused by injecting liquid into the stack chamber for sealing performance detection. Moreover, the sealing performance of the stack chamber is detected by compressed gas, and there is no need to additionally discharge the gas in the stack chamber after the detection is completed, thereby further simplifying the sealing performance detection step.

[0056] The at least two connecting joints 50 and the plurality of detection plugs 60 are arranged, so that the stack sealing detection equipment 100 can simultaneously detect the sealing performance of a plurality of stack chambers, or can detect the sealing performance of one of the stack chambers, thereby having good universality.

[0057] The gas supply device 10 can be a compressed gas cylinder. The compressed gas cylinder can provide compressed air in the connected positive electrode chamber 211 and / or negative electrode chamber 212, and has small volume and is convenient to carry.

[0058] Alternatively, the gas supply device 10 can also be an air compressor. That is, the air compressor includes a compressed gas cylinder and a compressor. Through the arrangement of the air compressor, the stack sealing detection equipment 100 can continuously provide compressed air after being powered on, so as to continuously detect the airtightness effect of the internal stack chamber of the liquid flow battery stack 210.

[0059] In some embodiments, as shown in Figure 3 The stack sealing detection equipment 100 further includes a valve device 70 connected between the gas supply device 10 and the leak detection device 30.

[0060] For example, the valve device 70 is a one-way valve for preventing fluid from flowing from the leak detection device 30 to the gas supply device 10. The flow direction of the one-way valve is from the gas supply device 10 to the leak detection device 30, so as to prevent the fluid from flowing from the leak detection device 30 to the gas supply device. Therefore, after the gas supply device 10 provides sufficient compressed gas into the stack chamber, the gas supply device can be disconnected to prevent the backflow of the gas through the one-way valve, so as to keep the pressure between the stack chamber and the leak detection device 30 stable, thereby facilitating the detection of the sealing performance of the stack chamber.

[0061] Alternatively, the valve device 70 can also be an electrically controlled valve. When the leak detection device 30 detects that the pressure of the compressed gas provided by the gas supply device 10 reaches a preset pressure value, the electrically controlled valve is controlled to be closed to prevent the gas supply device 10 from continuously providing the compressed gas into the stack chamber. In this way, the change of the pressure in the stack chamber can be accurately detected by the leak detection device 30.

[0062] In some embodiments, as shown in Figure 4 , the leak detection device 30 comprises a pressure sensor 31 and a detection body 32. The detection body 32 is provided with a detection cavity 321, and an air inlet 322 and an air outlet 323 which are in communication with the detection cavity 321. The air inlet 322 is connected with the first gas supply pipe 20 (as shown in Figure 3 ), so that the gas supply device 10 provides the compressed gas into the detection cavity 321 through the first gas supply pipe 20 and the air inlet 322. The air outlet 323 is connected with the second gas supply pipe 40, so that the detection cavity 321 is in communication with the stack chamber through the air outlet 323, the second gas supply pipe 40 and the connecting joint 50. The pressure sensor 31 is arranged in the detection cavity 321 to detect the pressure value in the detection cavity 321.

[0063] Since the detection cavity 321 is in communication with the stack chamber (such as the positive electrode chamber and the negative electrode chamber) through the air outlet 323, the second gas supply pipe 40 and the connecting joint 50, that is, the detection cavity 321 and the stack chamber in communication have the same pressure value and change synchronously. In this way, by arranging the pressure sensor 31 in the detection cavity 321, the pressure sensor 31 can accurately detect the pressure value in the stack chamber according to the pressure change in the detection cavity 321.

[0064] In combination with Figure 5 , the leak detection device 30 further comprises a controller 33 and a display 34, the pressure sensor 31 is electrically connected with the controller 33, and the controller 33 is electrically connected with the display 34, so that the display 34 is used at least to display the pressure parameter in the detection cavity 321 (as shown in Figure 4 ). That is, by the arrangement of the display 34 and the controller 33, the pressure parameter in the detection cavity 321 (or the stack chamber) can be displayed in real time.

[0065] In this way, by reading the above-mentioned pressure parameters in a preset time, it can be judged whether the pressure drop speed in the preset time exceeds a preset value, so as to judge whether the liquid flow battery stack is good in air tightness. In this process, the display 34 can directly display the pressure parameter for the user to read.

[0066] Continuing to refer to Figure 5The controller 33 can include a processing unit 331 and a storage unit 332. The processing unit 331 is electrically connected with the air pressure sensor 31 and the display 34, and the storage unit 332 is electrically connected with the processing unit 331. When the air pressure parameter is received by the air pressure sensor 31 and displayed by the display 34, the processing unit 331 can also store the air pressure parameter by the storage unit 332. That is, the air pressure parameter is stored by the storage unit 332, so as to facilitate the user to retrieve the historical data.

[0067] For example, as shown in FIG. 4, the processing unit 331 is also electrically connected with the valve device 70, and the valve device 70 is an electrically controlled valve. Figure 5

[0068] Thus, when starting the detection, the processing unit 331 controls the valve device 70 to open, so that the compressed gas is provided by the gas supply device 10 to the stack chamber through the leak detection device 30. When the air pressure parameter detected by the air pressure sensor 31 is greater than or equal to the preset air pressure value, the processing unit 331 controls the valve device 70 to close, so as to prevent the gas from leaking from the air inlet 322. Moreover, the processing unit 331 displays the received air pressure parameter through the display 34, and stores the corresponding air pressure parameter through the storage unit 332.

[0069] For example, after the valve device 70 is closed, the processing unit 331 monitors the air pressure change rate in the detection cavity 321 through the air pressure sensor 31 for a preset time (e.g., 5-10 minutes). When the air pressure change rate is greater than or equal to a preset value, the processing unit 331 gives a prompt of the air tightness not meeting the requirements through the display 34. When the air pressure change rate is less than or equal to the preset value, the processing unit 331 gives a prompt of the air tightness being good through the display 34.

[0070] For example, the processing unit 331 monitors the air pressure change rate in the detection cavity 321 for five minutes. When the air pressure decrease rate in the detection cavity 321 is less than 10-20% of the total air pressure value after five minutes, a prompt of the air tightness being good is given through the display 34.

[0071] In some embodiments, the display 34 can be a touch display. Through the cooperation of the processing unit 331, the display 34 with a touch structure can flexibly operate the related program, and the physical buttons can be simplified or not needed, so as to simplify the structure.

[0072] In some embodiments, the leak detection device 30 can also be an air pressure gauge. The air pressure gauge is connected with the corresponding positive electrode chamber or negative electrode chamber through the second gas supply pipe 40 and the connecting joint 50, so as to detect the air pressure value of the corresponding stack chamber. At this time, the user can directly read the related air pressure parameter through the air pressure gauge, and judge the air tightness effect in the connected stack chamber according to the air pressure change value within the preset time. ​

[0073] It should be noted that in the embodiments of the present application, the stack sealing detection device 100 can cooperate with the flow stack sealing detection system 200 to detect the sealing effect of the flow battery stack 210. In addition, the stack sealing detection device 100 can also be used alone to detect the sealing effect of the stack of other flow batteries, and the present application does not limit this.

[0074] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0075] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A stack seal detection apparatus, characterized by, The gas supply device, the first gas supply pipe, the leak detection device and the second gas supply pipe are sequentially connected. The electric stack sealing detection equipment further comprises at least two connecting joints and a plurality of detection plugs.

2. The stack seal detection apparatus of claim 1, wherein The leak detection device comprises: a gas pressure sensor; a detection body provided with a detection cavity, an air inlet and an air outlet in communication with the detection cavity, the air inlet being connected with the first gas supply pipe, the air outlet being connected with the second gas supply pipe, and the gas pressure sensor being arranged in the detection cavity for detecting the air pressure value of the detection cavity; a controller, the gas pressure sensor being electrically connected with the controller; and a display, the display being electrically connected with the controller, and the display being used at least for displaying the air pressure parameter in the detection cavity.

3. The stack seal test apparatus of claim 2, wherein, The controller comprises: a processing unit, the processing unit being electrically connected with the gas pressure sensor and the display; and a storage unit, the storage unit being electrically connected with the processing unit for storing the air pressure parameter.

4. The stack seal test apparatus of claim 2, wherein The display is a touch display.

5. The stack seal test apparatus of claim 1, wherein The leak detection device is a gas pressure gauge.

6. The stack seal detection apparatus according to any one of claims 1 to 5, characterized by, The electric stack sealing detection equipment further comprises a valve device connected between the gas supply device and the leak detection device.

7. The stack seal test apparatus of claim 6, wherein, The valve device is a one-way valve for preventing fluid from flowing from the leak detection device to the gas supply device.

8. The stack seal test apparatus of claim 6, wherein, The valve device is an electrically controlled valve.

9. The stack seal detection apparatus according to any one of claims 1 to 5, characterized by, The gas supply device is an air compressor.

10. A flow battery seal detection system, comprising: The liquid flow battery stack is provided with a plurality of positive electrode cavities and a plurality of negative electrode cavities, and an ion exchange membrane is arranged between one positive electrode cavity and one negative electrode cavity. A plurality of stack plugs are detachably connected with the first liquid inlet, the first liquid outlet, the second liquid inlet and the second liquid outlet. The electric stack sealing detection equipment of any one of claims 1 to 9, at least one of the first liquid inlet, the first liquid outlet, the second liquid inlet and the second liquid outlet is detachably connected with the second end of the connecting joint. ​ ​

Images