Diaphragm deformation rate testing device suitable for zinc-bromine flow battery

Abstract

The utility model discloses a diaphragm deformation rate testing device suitable for a zinc-bromine flow battery. The diaphragm deformation rate testing device comprises a placement platform, the height bracket and the driving device are fixed on the placing platform; a distance measuring device is arranged at the end part of the height bracket; the driving device controls the movement of the sample testing platform through a site control sliding rail and a screw rod; the driving device comprises a transverse driving device and a longitudinal driving device, the transverse driving device and the longitudinal driving device can be freely arranged up and down, and one driving device drives the other driving device, so that the sample testing platform can move at any position on the horizontal plane; the distance measuring device is a non-contact induction distance measuring device, the movement of the sample testing platform is accurately controlled along with the longitudinal driving device and the transverse driving device, and the height change of each control point position of the processed diaphragm can be accurately measured; and after the measurement is finished, calculating the diaphragm deformation rate of the zinc-bromine flow battery according to the obtained distance change data, and judging whether the diaphragm deformation rate is qualified or not.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of zinc-bromine flow battery, in particular to a kind of separator deformation rate testing device suitable for zinc-bromine flow battery. BACKGROUND

[0002] The existing zinc-bromine flow battery separator deformation rate test is mainly completed by means of precision carving machine tool and height gauge, the position of sample test point is controlled using precision carving machine tool, and the height change is tested using height gauge to calculate the deformation rate, the two testing devices cannot be measured synchronously, and there is a big difference in accuracy; Zinc-bromine flow battery separator is a soft material, any test involving surface contact will greatly affect the deformation test, and the bit control point mode of precision carving machine tool and the height testing mode of height gauge are both contact type tests, with large test error, especially the bit control point mode of precision carving machine tool can even cause the damage of separator, so the test result is not meaningful, and the existing method is complex and has high test cost. SUMMARY

[0003] In view of the above problems existing in the prior art, the purpose of the present application is to realize the device for quickly testing the deformation rate of separator by designing fixed rack space, test point control structure, non-contact distance measuring structure and sample test platform.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a kind of separator deformation rate testing device suitable for zinc-bromine flow battery, including placing platform;Height support and driving device fixed on the placing platform;The end of the height support is provided with distance measuring device, and the driving device controls the movement of sample test platform through point control slide rail and screw rod.

[0005] As a preferred mode of the present application, the driving device includes transverse driving device and longitudinal driving device, which can be set up arbitrarily up and down, and one driving device drives the other driving device, so as to realize the movement of sample test platform at any position on horizontal plane.

[0006] As a preferred mode of the present application, the four edges of the sample test platform are provided with sample mounting clamp for fixing the separator sample.

[0007] As a preferred mode of the present application, the sample test platform is square table top, and the size is 8cm*8cm~12cm*12cm, and more preferably the size is 10cm*12cm.

[0008] As a preferred mode of the present application, the sample mounting clamp is movably connected with the sample test platform, to ensure the quick disassembly of the sample mounting clamp and the separator sample.

[0009] As a preferred mode of the present application, the sample loading fixture uses a modified PP or PTFE hard plate.

[0010] As a preferred mode of the present application, the distance measuring device is located above the driving device.

[0011] As a preferred mode of the present application, the distance measuring device is a non-contact inductive distance measuring device, more preferably an infrared sensor with a spot diameter of 0.5mm-1.5mm and a detection accuracy of 0.1um-0.5um.

[0012] Compared with the prior art, the technical solution disclosed by the present application has the following beneficial effects:

[0013] 1. The test site control is accurate and the test accuracy is controllable.

[0014] 2. The present application is simple to operate, convenient to replace samples, good in test continuity, and avoids the influence of time-consuming complex operation on test results.

[0015] 3. The present application can realize non-contact testing and avoid the influence of contact with the surface of the diaphragm on the diaphragm deformation rate during testing.

[0016] 4. The device occupies small space and has low overall cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the diaphragm deformation rate testing device in the embodiment.

[0018] Figure 2 It is the structure schematic diagram of the sample testing platform in the embodiment.

[0019] 1, placement platform; 2, height support; 3, site control slide rail; 4, lead screw; 5, distance measuring device; 6, horizontal driving device; 7, sample testing platform; 8, vertical driving device; 9, sample loading fixture; 10, diaphragm sample. DETAILED DESCRIPTION

[0020] In order to explain the technical content, structural features, purposes and effects of the technical scheme in detail, the following will be described in detail in combination with specific embodiments and the accompanying drawings.

[0021] The present embodiment re-designs in view of the shortcomings of the current zinc-bromine flow battery device:

[0022] For example, Figure 1As shown, the overall structure of a membrane deformation rate testing device suitable for zinc-bromine flow batteries is as follows: the height support 2 and the lateral drive device 6 are fixed on the placement platform 1, and the longitudinal drive device 8 is connected to the lateral drive device 6, enabling movement in a direction perpendicular to the lateral drive device 6. In this embodiment, a sample testing platform 7 (the sample testing platform is not less than 8cm*8cm, preferably 10cm*12cm) is set above the longitudinal drive device 8. The position change of the sample testing platform 7 is controlled by the longitudinal drive device 8 and the lateral drive device 6, enabling movement at any position on the plane.

[0023] Both the longitudinal drive device 8 and the transverse drive device 6 are equipped with position control slide rails 3 and lead screws 4 to control the movement of the sample testing platform 7. During testing, position control can be achieved at equal or unequal distances. The sample testing platform 7 is a square tabletop and is treated with Teflon or other corrosion-resistant materials (any one or more corrosion-resistant treatments are acceptable). As a preferred structure, the sample testing platform 7 can be equipped with positioning grooves (including positioning pins or any positioning device) to accurately fix the diaphragm sample 10 in conjunction with the sample clamp 9.

[0024] The ranging device 5 is mounted on the head of the height support 2 and is fixedly connected to the height support 2. The ranging device 5 is positioned above the longitudinal drive device 8 and the transverse drive device 6, and works in conjunction with the longitudinal drive device 8 and the transverse drive device 6 to achieve accurate testing of the diaphragm deformation rate. The ranging device 5 is a non-contact inductive ranging device (preferably an infrared distance sensor, preferably with a spot diameter of 0.5mm to 1.5mm and a detection accuracy of 0.1μm to 0.5μm). As the longitudinal drive device 8 and the transverse drive device 6 precisely control the movement of the sample testing platform 7, the height change of each control point of the processed diaphragm can be accurately measured. After the measurement is completed, the diaphragm deformation rate of the zinc-bromine flow battery is calculated based on the obtained distance change data, and its qualification is determined.

[0025] like Figure 2 As shown, one structure of the sample clamp 9 is shown. The sample clamp 9 is used to clamp the diaphragm sample 10 and is locked with screws. Figure 2 The structure is screw-locked, but can be set to any locking method such as pneumatic locking or snap-locking. This structure completely simulates the actual use of zinc-bromine flow batteries, and the test results are highly relevant to the study of the actual operation of zinc-bromine flow batteries. The structure of the sample clamp 9 is compatible with the sample test platform 7, which can ensure the quick assembly and disassembly of the sample clamp 9 and the separator sample 10, facilitating testing. The sample clamp 9 is preferably made of modified PP or PTFE rigid plate to ensure good resistance to electrolyte corrosion and temperature resistance, so as not to affect the deformation test of the zinc-bromine flow battery separator.

[0026] Working principle

[0027] The embodiment discloses a kind of membrane deformation rate test device suitable for zinc bromine flow battery, during the operation of zinc bromine flow battery, battery membrane plays an important role as the main component structure of battery, and the good and bad of the dimensional stability of battery membrane resistant to electrolyte directly affects the energy efficiency of battery, so it is crucial to accurately test the deformation rate of zinc bromine flow battery membrane.This design simulates the actual use of membrane in zinc bromine flow battery, realizes quick disassembly and assembly by designing sample fixture, ensures the continuity of test;Design multiple sets of fixture to assemble different types of membranes, and electrolyte treatment is carried out to the membrane, which can effectively ensure the consistency of sample processing conditions, realize the comparability of test results.

[0028] During the test, according to the following steps: Figure 2 After completing sample assembly, sample fixture 9 with membrane sample 10 is placed in prepared electrolyte for soaking, and the preferred sample treatment temperature is-40℃~60℃, the sample is taken out after reaching the specified sample treatment time, the surface electrolyte is absorbed using high water absorption paper, the sample fixture 9 is installed on the sample test platform 7, the position of the sample test platform 7 is changed through the transverse driving device 6 and the longitudinal driving device 8, the test is started, the indication of the distance measuring device 5 is recorded, and the deformation rate of the membrane is calculated.

[0029] It should be noted that although the above embodiments have been described in this paper, the patent protection scope of the utility model is not limited thereby. Therefore, based on the innovative idea of the utility model, the changes and modifications made to the embodiments described in this paper, or the equivalent structure or equivalent process conversion made using the contents of the utility model specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the patent protection scope of the utility model.

Claims

1.A device for testing the deformation rate of a separator for a zinc-bromine flow battery, comprising: a placement platform; a height support and a driving device fixed on the placement platform; the height support is provided with a distance measuring device at the end thereof, and the driving device controls the movement of a sample testing platform through a point control sliding rail and a screw. 2.The device for testing the deformation rate of a separator for a zinc-bromine flow battery according to claim 1, wherein: the driving device comprises a horizontal driving device and a vertical driving device, and the two devices can be arranged in any order, and one driving device drives the other driving device to move the sample testing platform to any position on the horizontal plane. 3.The device for testing the deformation rate of a separator for a zinc-bromine flow battery according to claim 1, wherein: the sample testing platform is provided with a sample loading clamp on each side thereof for fixing the separator sample. 4.The device for testing the deformation rate of a separator for a zinc-bromine flow battery according to claim 3, wherein: the sample testing platform is a square platform with a size of 8cm*8cm to 12cm*12cm. 5.The device for testing the deformation rate of a separator for a zinc-bromine flow battery according to claim 3, wherein: the sample loading clamp is movably connected to the sample testing platform to ensure quick assembly and disassembly of the sample loading clamp and the separator sample. 6.The device for testing the deformation rate of a separator for a zinc-bromine flow battery according to claim 3, wherein: the sample loading clamp is made of a modified PP or PTFE hard plate. 7.The device for testing the deformation rate of a separator for a zinc-bromine flow battery according to claim 1, wherein: the distance measuring device is located above the driving device. The non-contact inductive distance measuring device comprises an infrared sensor with a light spot diameter of 0.5mm to 1.5mm and a detection accuracy of 0.1μm to 0.5μm. ​ ​ ​ ​ ​ ​ 8. The separator distortion rate testing device suitable for zinc-bromine flow battery of claim 1, wherein: ​

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