Testing device

Abstract

The utility model relates to a testing device. The testing device is used for testing the flow resistance performance of the porous electrode and comprises a testing pump, a clamp and a differential pressure sensor. The test pump is provided with a pump outlet and a pump inlet; the clamp is provided with a test cavity for accommodating the porous electrode; the clamp is provided with a first inlet, a first outlet, a second inlet and a second outlet which are communicated with the test cavity; the pump outlet is communicated with the first inlet; and the first outlet is communicated with the pump inlet. The differential pressure sensor is connected to the second inlet and the second outlet. Through the testing device, the flow resistance performance of the porous electrode can be well tested, so that the testing data of the flow resistance performance of the porous electrode can be used as a model selection reference of other parts such as a circulating pump and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flow battery, in particular to a testing device. BACKGROUND

[0002] The flow battery is composed of a stack unit, an electrolyte, an electrolyte storage and supply unit, a management and control unit and the like. The flow battery is a high-performance storage battery that utilizes different circulating pumps to separate the positive and negative electrolytes and circulate them respectively.

[0003] The porous electrode (such as carbon felt) is arranged on each side of the diaphragm of the flow battery. The porous electrode, as a porous material, will generate a great resistance to the flow of the electrolyte. The greater the resistance, the higher the performance requirement of the circulating pump. Therefore, the measurement of the flow resistance performance of the porous electrode is of great significance for the selection of components such as the circulating pump. Based on this, how to provide a testing device capable of testing the flow resistance performance of the porous electrode is a technical problem to be solved urgently. CONTENT OF THE UTILITY MODEL

[0004] Based on this, it is necessary to provide a testing device for testing the flow resistance performance of the porous electrode.

[0005] The present application provides a testing device for testing the flow resistance performance of the porous electrode. The testing device comprises a testing pump, a clamp and a differential pressure sensor. The testing pump has a pump outlet and a pump inlet. The clamp has a test cavity for accommodating the porous electrode. The clamp is provided with a first inlet, a first outlet, a second inlet and a second outlet which are in communication with the test cavity. The pump outlet is in communication with the first inlet. The first outlet is in communication with the pump inlet. The differential pressure sensor is connected to the second inlet and the second outlet respectively.

[0006] In the technical solution of the present application, when the testing device is used, the porous electrode can be placed in the clamp. The testing pump is used to circulate the test liquid through the porous electrode in the test cavity. During this process, the differential pressure sensor is used to test the difference between the pressure of the test liquid flowing into the second inlet and the pressure of the test liquid flowing out of the second outlet, so as to test the porous electrode. In this way, the flow resistance performance of the porous electrode can be tested well by the testing device. The test data of the flow resistance performance of the porous electrode can be used as a reference for the selection of other components such as the circulating pump.

[0007] In one embodiment, the testing device further comprises a first pipeline and a flow meter. The first pipeline is in communication with the pump outlet and the first inlet respectively. The flow meter is arranged on the first pipeline.

[0008] Thus, the flow meter can be used to test the flow rate of the test liquid flowing into the first inlet, and the flow meter can be used to better simulate the inlet flow rate of the flow battery, so that the flow resistance performance of the porous electrode can be tested under the simulated inlet flow rate of the flow battery, and the data accuracy of the flow resistance performance of the porous electrode can be improved.

[0009] In one of the embodiments, the testing device further comprises a needle valve, which is arranged on the first pipeline and located between the flow meter and the test pump.

[0010] The needle valve can finely adjust the flow rate of the test liquid flowing into the first inlet, and the controllability of the flow adjustment can be improved, so that the inlet flow rate of the flow battery can be more accurately simulated.

[0011] In one of the embodiments, the testing device further comprises a pressure sensor, which is arranged on the first pipeline and located between the needle valve and the flow meter.

[0012] Thus, the pressure sensor can be used to test the pressure of the test liquid flowing into the first inlet, and the pressure sensor can be used to better simulate the inlet pressure of the flow battery, so that the flow resistance performance of the porous electrode can be tested under the simulated inlet pressure of the flow battery, and the data accuracy of the flow resistance performance of the porous electrode can be improved.

[0013] In one of the embodiments, the testing device further comprises a pressure relief pipeline and a safety valve, the pressure relief pipeline is in communication with the first pipeline, and the safety valve is arranged on the pressure relief pipeline.

[0014] Thus, in the case of blockage of the first pipeline, the safety valve can timely release the pressure, and the safety of the testing device can be improved.

[0015] In one of the embodiments, the testing device further comprises a needle valve, which is arranged on the first pipeline and located between the flow meter and the test pump. The first pipeline comprises an upstream section and a downstream section, and the needle valve is in communication between the upstream section and the downstream section. The flow meter is arranged on the downstream section, and the pressure relief pipeline is in communication with the upstream section.

[0016] Since the pressure relief pipeline is in communication with the upstream section, in the case of blockage of the first pipeline, the safety valve can more quickly release the pressure, and the safety of the testing device can be improved.

[0017] In one of the embodiments, the testing device further comprises a storage container, which has a containing cavity, and the containing cavity is in communication with the first outlet and the pump inlet, respectively.

[0018] In this way, the test liquid can be stored in the containing cavity of the storage container, and the test liquid can be circulated through the porous electrode in the test cavity in a sufficient amount.

[0019] In one of the embodiments, the test pump comprises a servo motor and a pump body, and the pump outlet and the pump inlet are arranged on the pump body. The servo motor is connected to the pump body to drive the pump body to operate.

[0020] The servo motor drives the pump body to operate, and the servo motor can improve the output accuracy of the test liquid output by the pump body, so that the inlet pressure of the flow battery can be better simulated, the flow resistance performance of the porous electrode can be tested under the simulated inlet pressure of the flow battery, and the data accuracy of the flow resistance performance of the porous electrode can be improved.

[0021] In one of the embodiments, the test device further comprises an encoder and a controller. The encoder is connected to the output end of the servo motor, and the controller is electrically connected to the encoder and the servo motor.

[0022] The controller controls the output of the servo motor according to the rotation angle and rotation speed of the output end of the servo motor tested by the encoder, so that the output accuracy of the test liquid output by the pump body can be improved, the inlet pressure of the flow battery can be better simulated, and the data accuracy of the flow resistance performance of the porous electrode can be improved.

[0023] In one of the embodiments, the clamp comprises a bottom shell and an upper cover. The upper cover is detachably arranged on the bottom shell, and the test cavity is surrounded by the bottom shell and the upper cover.

[0024] In this way, the porous electrode of the test cavity can be replaced as needed, and the porous electrode can be taken out and placed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A side view of the test device in one embodiment of the application is shown from one perspective.

[0026] Figure 2 A side view of the test device in one embodiment of the application is shown from another perspective.

[0027] Figure 3 A structural block diagram of the test device in one embodiment of the application is shown.

[0028] Figure 4 A circuit block diagram of the servo motor, the encoder, and the controller in one embodiment of the application is shown.

[0029] Reference signs: 10, test device; 100, test pump; 110, servo motor; 120, pump body; 200, clamp; 210, bottom shell; 220, upper cover; 300, differential pressure sensor; 410, first pipeline; 411, upstream section; 412, downstream section; 420, flow meter; 430, needle valve; 440, pressure sensor; 510, pressure relief pipeline; 520, safety valve; 600, storage container; 700, encoder; 810, controller; 820, display; 900, box; K1, first inlet; K2, first outlet; K3, second inlet; K4, second outlet. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be 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 number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the descriptions of the present application are merely intended to be illustrative and that changes can be made to the description without departing from the spirit and scope of the present application.

[0031] In the description of the present application, it should be understood that if the 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 merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying 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 limiting the present application.

[0032] In addition, if the terms "first", "second" appear, these terms are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0033] In the present application, unless specifically defined otherwise and limited in the present application, if there are terms "mount", "connect", "connect", "fix", etc. These terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless specifically defined otherwise and limited in the present application, if there are terms "mount", "connect", "connect", "fix", etc. These terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] It should be noted that if an element is referred to as "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0036] The flow battery is composed of a stack unit, an electrolyte, an electrolyte storage and supply unit, and a management and control unit. The flow battery is a high-performance storage battery that uses different circulating pumps to separate the positive and negative electrolytes and circulate them separately.

[0037] The porous electrode (such as carbon felt) is provided on both sides of the separator of the flow battery. The porous electrode, as a porous material, will generate a large resistance to the flow of electrolyte. The greater the resistance, the higher the performance requirement for the circulating pump. Therefore, the measurement of the flow resistance performance of the porous electrode is of great significance for the selection of components such as the circulating pump. Based on this, how to provide a test device capable of testing the flow resistance performance of the porous electrode is a technical problem to be solved.

[0038] In view of the above technical problems, the present application designs a test device which can well test the flow resistance performance of the porous electrode.

[0039] Figure 1 and Figure 2 Fig. 4 shows a side view of the testing device in an embodiment of the present application from different viewing angles, Figure 3 Fig. 5 shows a structural block diagram of the testing device in an embodiment of the present application.

[0040] Please refer to Figures 1-3 An embodiment of the present application provides a testing device 10 for testing flow resistance performance of a porous electrode, the testing device 10 comprising a testing pump 100, a clamp 200 and a differential pressure sensor 300.

[0041] For example, the porous electrode can be carbon felt.

[0042] The testing pump 100 has a pump outlet and a pump inlet, the clamp 200 has a testing cavity (not shown in the figure) for accommodating the porous electrode, the clamp 200 is provided with a first inlet K1, a first outlet K2, a second inlet K3 and a second outlet K4 in communication with the testing cavity, the pump outlet is in communication with the first inlet K1, and the first outlet K2 is in communication with the pump inlet. The testing liquid can be pumped into the testing cavity through the first inlet K1 by the testing pump 100, and permeate through the porous electrode in the testing cavity, and then flow back to the pump inlet of the testing pump 100 through the first outlet K2, so as to realize circulation of the testing liquid through the porous electrode in the testing cavity, so as to test the flow resistance performance of the porous electrode in the testing cavity.

[0043] The differential pressure sensor 300 is connected to the second inlet K3 and the second outlet K4 respectively, and it can be understood that the differential pressure sensor 300 is used to test the difference between the pressure of the testing liquid flowing into the second inlet K3 and the pressure of the testing liquid flowing out of the second outlet K4.

[0044] The differential pressure sensor 300 is used to test the difference between the pressure of the testing liquid flowing into the second inlet K3 and the pressure of the testing liquid flowing out of the second outlet K4.

[0045] The test device 10 of the present application can be used as follows. First, the porous electrode is not placed in the clamp 200, and the test liquid is circulated through the test chamber by the test pump 100. The pressure difference between the test liquid flowing into the second inlet K3 and the test liquid flowing out of the second outlet K4 is tested by the pressure difference sensor 300 to test the blank sample, and the first pressure difference tested by the pressure difference sensor 300 in the blank sample is recorded. Then, the porous electrode is placed in the clamp 200, and the test liquid is circulated through the porous electrode in the test chamber by the test pump 100. During this process, the pressure difference between the test liquid flowing into the second inlet K3 and the test liquid flowing out of the second outlet K4 is tested by the pressure difference sensor 300 to test the porous electrode, and the second pressure difference tested by the pressure difference sensor 300 in the test of the porous electrode is recorded. The flow resistance performance of the porous electrode is calculated by the difference between the second pressure difference and the first pressure difference. The test device 10 can reduce the error in the test process, and thus more accurately test the flow resistance performance of the porous electrode.

[0046] It should be noted that the first pressure difference and the second pressure difference are both average values obtained by multiple tests, so that the data accuracy of the flow resistance performance of the porous electrode can be improved.

[0047] In some embodiments, the test liquid can be an electrolyte or pure water. For example, the test liquid is pure water, which can improve the test safety of the test device 10.

[0048] In some embodiments, the clamp 200 includes a bottom shell 210 and an upper cover 220. The upper cover 220 is detachably covered on the bottom shell 210, and the test chamber is surrounded by the bottom shell 210 and the upper cover 220. The first inlet K1, the first outlet K2, the second inlet K3, and the second outlet K4 are all arranged on the bottom shell 210.

[0049] In this way, the porous electrode of the test chamber can be replaced as needed, and the porous electrode can be easily taken out and placed.

[0050] In some embodiments, the test device 10 further includes a first pipeline 410 and a flow meter 420. The first pipeline 410 is connected to the pump outlet and the first inlet K1, respectively. The flow meter 420 is arranged on the first pipeline 410.

[0051] The flow meter 420 can be a turbine flow meter.

[0052] In this way, the flow of the test liquid flowing into the first inlet K1 can be tested by the flow meter 420, and the inlet flow of the flow battery can be better simulated by the flow meter 420. The flow resistance performance of the porous electrode can be tested under the condition of simulating the inlet flow of the flow battery, and thus the data accuracy of the flow resistance performance of the porous electrode can be improved.

[0053] In some embodiments, the testing device 10 further comprises a needle valve 430, which is arranged on the first pipeline 410 and located between the flow meter 420 and the testing pump 100.

[0054] The needle valve 430 can finely adjust the flow rate of the testing liquid flowing into the first inlet K1, thereby improving the controllability of the flow rate adjustment, and thus facilitating more accurate simulation of the inlet flow rate of the flow battery.

[0055] In some embodiments, the testing device 10 further comprises a pressure sensor 440, which is arranged on the first pipeline 410 and located between the needle valve 430 and the flow meter 420.

[0056] In this way, the pressure sensor 440 can be used to test the pressure of the testing liquid flowing into the first inlet K1, thereby better simulating the inlet pressure of the flow battery to test the flow resistance performance of the porous electrode under the simulated inlet pressure of the flow battery, and thus improving the accuracy of the data of the flow resistance performance of the porous electrode.

[0057] In some embodiments, the testing device 10 further comprises a pressure relief pipeline 510 and a safety valve 520, wherein the pressure relief pipeline 510 is in communication with the first pipeline 410, and the safety valve 520 is arranged on the pressure relief pipeline 510.

[0058] In this way, in the case of blockage or other conditions of the first pipeline 410, the safety valve 520 can timely relieve the pressure, thereby improving the safety of the testing device 10.

[0059] In some embodiments, the first pipeline 410 comprises an upstream section 411 and a downstream section 412, the needle valve 430 is in communication between the upstream section 411 and the downstream section 412, the flow meter 420 is arranged on the downstream section 412, and the pressure relief pipeline 510 is in communication with the upstream section 411.

[0060] Specifically, the pressure sensor 440 and the flow meter 420 are arranged in sequence on the downstream section 412.

[0061] Since the pressure relief pipeline 510 is in communication with the upstream section 411, in the case of blockage or other conditions of the first pipeline 410, the safety valve 520 can more quickly relieve the pressure, thereby improving the safety of the testing device 10.

[0062] In some embodiments, the testing device 10 further comprises a storage container 600, which has a containing cavity in communication with the first outlet K2 and the pump inlet, respectively.

[0063] Specifically, the safety valve 520 is in communication with the containing cavity, and the test liquid in the pressure relief pipeline 510 can be discharged in time through the safety valve 520 and flow into the containing cavity of the storage container 600, so as to reduce the waste of the test liquid.

[0064] In this way, the test liquid can be stored in the containing cavity of the storage container 600, and the test liquid can be circulated through the porous electrode in the test cavity in a sufficient amount.

[0065] In some embodiments, the test pump 100 comprises a servo motor 110 and a pump body 120, and the pump outlet and the pump inlet are arranged on the pump body 120, wherein the servo motor 110 is connected with the pump body 120 to drive the pump body 120 to operate.

[0066] By driving the pump body 120 to operate through the servo motor 110, the servo motor 110 can be used to improve the output accuracy of the test liquid output by the pump body 120, so as to better simulate the inlet pressure of the flow battery, and test the flow resistance performance of the porous electrode under the simulated inlet pressure of the flow battery, thereby improving the data accuracy of the flow resistance performance of the porous electrode.

[0067] In some embodiments, referring to Figure 4 , the test device 10 further comprises an encoder 700 and a controller 810, the encoder 700 is connected with the output end of the servo motor 110, and the encoder 700 is used to test the rotation angle and rotation speed of the output end of the servo motor 110, and the controller 810 is electrically connected with the encoder 700 and the servo motor 110 respectively, and the controller 810 is used to control the output of the servo motor 110 according to the rotation angle and rotation speed of the output end of the servo motor 110 tested by the encoder 700, thereby improving the output accuracy of the test liquid output by the pump body 120, better simulating the inlet pressure of the flow battery, and improving the data accuracy of the flow resistance performance of the porous electrode.

[0068] In some embodiments, the test device 10 further comprises a display 820, and the differential pressure sensor 300, the flow meter 420, the needle valve 430, the pressure sensor 440 and the display 820 are electrically connected with the controller 810 respectively.

[0069] The display 820 is used to display the data tested by the differential pressure sensor 300, the flow meter 420 and the pressure sensor 440 respectively, so as to adjust in time according to the data displayed by the display 820 to more accurately simulate the use of the porous electrode in the flow battery, and the data recorded and saved according to the data displayed by the display 820.

[0070] In some embodiments, the testing device 10 further comprises a cabinet 900, the testing pump 100, the clamp 200, the differential pressure sensor 300, the first pipeline 410, the flow meter 420, the needle valve 430, the pressure sensor 440, the pressure relief pipeline 510, the safety valve 520, the storage container 600, the encoder 700 and the controller 810 are all arranged in the cabinet 900, and the display 820 is arranged on the outer wall of the cabinet 900.

[0071] In this way, the overall testing device 10 is convenient to move, and the data displayed on the display 820 is convenient to read through the display 820.

[0072] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0073] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which 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 test device, characterized by The test device is used for testing flow resistance performance of a porous electrode, and comprises: a test pump having a pump outlet and a pump inlet; a clamp having a test cavity for accommodating the porous electrode; the clamp is provided with a first inlet, a first outlet, a second inlet and a second outlet in communication with the test cavity; wherein the pump outlet is in communication with the first inlet; the first outlet is in communication with the pump inlet; and a differential pressure sensor connected to the second inlet and the second outlet, respectively.

2. The test device of claim 1, wherein, The test device further comprises: a first pipeline in communication with the pump outlet and the first inlet, respectively; and a flow meter arranged on the first pipeline.

3. The test device of claim 2, wherein, The test device further comprises a needle valve; the needle valve is arranged on the first pipeline and located between the flow meter and the test pump.

4. The test device of claim 3, wherein, The test device further comprises a pressure sensor; the pressure sensor is arranged on the first pipeline and located between the needle valve and the flow meter.

5. The test device of claim 4, wherein, The test device further comprises: a pressure relief pipeline in communication with the first pipeline; and a safety valve arranged on the pressure relief pipeline.

6. The test device of claim 5, wherein, The first pipeline comprises an upstream section and a downstream section, and the needle valve is in communication between the upstream section and the downstream section; the flow meter is arranged on the downstream section; the pressure relief pipeline is in communication with the upstream section.

7. The test device of any one of claims 1-4, wherein, The test device further comprises a storage container; the storage container has an accommodating cavity; the accommodating cavity is in communication with the first outlet and the pump inlet, respectively.

8. The test device of any one of claims 1-4, wherein, The test pump comprises: a servo motor; and a pump body, the pump outlet and the pump inlet being arranged on the pump body; wherein the servo motor is connected to the pump body to drive the pump body to operate.

9. The test device of claim 8, wherein, The test device further comprises: an encoder connected to an output end of the servo motor; and a controller electrically connected to the encoder and the servo motor, respectively.

10. The test device of any one of claims 1-4, wherein, The clamp comprises: a bottom shell; and an upper cover detachably arranged on the bottom shell and surrounding the test cavity with the bottom shell.

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