Online insulation detection device for vanadium battery

Abstract

The utility model provides an on-line insulation detection device of a vanadium battery, which comprises a box body and a battery assembly fixedly arranged in the box body, the battery assembly comprises a positive electrode liquid storage tank, a negative electrode liquid storage tank and a functional assembly, the bottom surface of the box body and the outer edges of the positive electrode liquid storage tank, the negative electrode liquid storage tank and the functional assembly are respectively provided with a containing groove, and the containing grooves are communicated with the box body. A liquid leakage detection rope is arranged in each containing groove in a wound mode. According to the utility model, through the arrangement of the plurality of accommodating grooves and the liquid leakage detection ropes respectively arranged in the plurality of accommodating grooves, whether the battery assembly leaks liquid can be monitored in real time, and meanwhile, through the arrangement of the plurality of liquid leakage detection ropes in the plurality of accommodating grooves, the positive electrode liquid storage tank, the negative electrode liquid storage tank and the functional assembly can be respectively detected; the liquid leakage area can be determined when liquid leakage occurs, and maintenance by workers is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to an online insulation testing device for vanadium batteries. Background Technology

[0002] A vanadium redox flow battery (VRB) is a redox battery in which the active material is in a circulating liquid state. The electrical energy in a VRB is stored as chemical energy in a sulfuric acid electrolyte containing vanadium ions of different valence states. An external pump forces the electrolyte into the battery stack, where it circulates within closed loops of different storage tanks and half-cells under mechanical force. A proton exchange membrane serves as the separator in the battery pack. The electrolyte solution flows parallel across the electrode surfaces, undergoing electrochemical reactions. Current is collected and conducted through dual electrode plates, thus converting the chemical energy stored in the solution into electrical energy. This reversible reaction process allows the VRB to smoothly complete charging, discharging, and recharging.

[0003] However, vanadium batteries may experience a decline in insulation performance (such as leakage) due to accidents, abnormal operation, and failure to maintain them in a timely manner. If leakage is not detected in time, it can corrode production equipment and even seriously endanger human life and cause environmental pollution. Utility Model Content

[0004] The main objective of this invention is to provide an online insulation detection device for vanadium batteries, in order to solve the problems of vanadium battery leakage in the prior art, which may cause a decrease in insulation performance, corrosion of production equipment, endanger human life and safety, and cause environmental pollution.

[0005] To solve the above problems, the present invention adopts the following technical solution: an online insulation detection device for vanadium batteries, comprising a housing and a battery assembly fixed in the housing, wherein the battery assembly includes a positive electrode storage tank, a negative electrode storage tank and a functional component, wherein the bottom surface of the housing is provided with receiving grooves on the outer edges of the positive electrode storage tank, the negative electrode storage tank and the functional component, and a leakage detection rope is wound in each receiving groove.

[0006] Furthermore, the outer edge of the bottom surface of the receiving tank extends downward in a direction away from the corresponding positive electrode storage tank, negative electrode storage tank and functional component, and each of the leakage detection ropes is respectively wrapped around the outer edge of the corresponding receiving tank.

[0007] Furthermore, a liquid storage tank is fixedly provided at the bottom of the box body, and each of the receiving slots is provided with at least one leakage hole communicating with the liquid storage tank.

[0008] Furthermore, the leakage hole is located near the inner edge of the corresponding receiving groove.

[0009] Furthermore, a cover plate is fixed to the top of the leakage hole, and there is a gap between the side of the cover plate near the outer edge of the corresponding receiving groove and the top surface of the leakage hole.

[0010] Furthermore, the front side of the box body is provided with an opening, the opening side of the box body is provided with a door, the bottom end of the door is hinged to the box body, and the top end of the door is provided with multiple snap-fit ​​components.

[0011] Furthermore, the top surface of the box body is provided with multiple slots, and multiple snap-fit ​​components are respectively snapped into the multiple slots. Each snap-fit ​​component includes a groove provided on the top surface of the box door, a stop block slidably provided in the groove, and a first spring for pushing the stop block to move away from the groove.

[0012] Furthermore, a sliding groove communicating with the outside is provided on the side of the groove away from the box body, and a pull plate is fixed on one side of the stop block, with the free end of the pull plate extending through the sliding groove in a direction away from the box body.

[0013] Furthermore, the side of the block closest to the housing has a beveled surface, which extends upwards at an angle from the middle of the block away from the housing.

[0014] Furthermore, one end of each of the leakage detection ropes passes through the housing and is connected to a controller on the outside of the housing.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting up multiple receiving tanks and leakage detection ropes installed in each of the multiple receiving tanks, it is possible to monitor whether the battery assembly is leaking in real time. At the same time, by setting up multiple leakage detection ropes in multiple receiving tanks, the positive electrode liquid storage tank, negative electrode liquid storage tank and functional components can be detected separately to identify the fault area when the insulation performance deteriorates, which facilitates maintenance by the staff.

[0017] 2. By setting the bottom of the container tank as a slope, the liquid flowing into the container tank will converge towards the outer edge of the container tank, that is, towards the direction of the leak detection rope. In this way, the leak detection rope can better sense the liquid leakage.

[0018] 3. By setting up a snap-fit ​​component, the cabinet door can be opened or closed easily, thereby facilitating the maintenance or repair of the equipment by the staff. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a perspective view of the online insulation detection device for vanadium batteries according to this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the online insulation testing device for vanadium batteries according to this utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the online insulation testing device for vanadium batteries according to this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the snap-fit ​​assembly of this utility model.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Box body; 11. Slot; 12. Box door; 121. Groove; 122. Slide groove; 13. Receiving groove; 14. Leakage hole; 15. Cover plate; 16. Gap; 2. Liquid storage tank; 3. Battery assembly; 31. Positive electrode liquid storage tank; 32. Negative electrode liquid storage tank; 33. Functional component; 4. Snap-fit ​​assembly; 41. Stop block; 411. Beveled surface; 42. First spring; 43. Pull plate; 5. Leakage detection rope. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Please see Figures 1 to 3 As shown, an online insulation testing device for a vanadium battery includes a housing 1, a battery assembly 3, and a storage tank 2. The housing 1 is a hollow rectangular box used to receive and protect the battery assembly 3 from impacts by external objects, preventing leakage. It should be noted that the battery assembly 3 is existing technology and includes a positive electrode storage tank 31, a negative electrode storage tank 32, and a functional component 33. Specifically, the functional component 33 is a bipolar plate, which is connected to the positive electrode storage tank 31 and the negative electrode storage tank 32 via pipelines and a delivery pump (not shown in the figure), and will not be described further here.

[0028] Preferably, the box body 1 is a rectangular box with an opening on the front side. The opening side of the box body 1 is provided with a door 12 for opening or closing the box body 1. Specifically, the bottom end of the door 12 is hinged to the box body 1, and the top end of the door 12 is provided with multiple snap-fit ​​components 4 to snap into the box body 1. Specifically, the top surface of the box body 1 is provided with multiple slots 11, and the multiple snap-fit ​​components 4 are respectively snapped into the multiple slots 11.

[0029] Please see Figure 4 As shown, in this embodiment, the top surface of the door 12 is provided with a groove 121 corresponding to each snap-fit ​​assembly 4. Each snap-fit ​​assembly 4 includes a stop block 41 and a first spring 42. The stop block 41 is slidably disposed in the corresponding groove 121, while the first spring 42 is located between the stop block 41 and the bottom surface of the groove 121, and is used to push the stop block 41 to move away from the groove 121. Preferably, the side of the stop block 41 near the box body 1 is provided with a beveled surface 411, which extends upward at an angle from the middle of the stop block 41 away from the box body 1.

[0030] During implementation, the staff pushes and rotates the door 12, causing the top of the door 12 to rotate towards the side closer to the box body 1 until the top surface of the box body 1 abuts against the beveled surface 411 of the stop block 41. Then, the staff continues to push the door 12, at which point the first spring 42 is compressed, and the stop block 41 moves into the groove 121 until the stop block 41 no longer interferes with the top surface of the box body 1, thereby closing the door 12. When the stop block 41 moves to the bottom of the slot 11, the stop block 41 returns to its original position due to the elasticity of the first spring 42. At this time, the stop block 41 is engaged in the corresponding slot 11 of the box body 1, thereby engaging the door 12 with the box body 1.

[0031] Preferably, the side of the groove 121 away from the housing 1 has a sliding groove 122 that communicates with the outside. A pull plate 43 is fixed to one side of the stop block 41, and the free end of the pull plate 43 extends away from the housing 1 through the sliding groove 122. In practice, when it is necessary to open the housing 1, the operator pulls down the pull plate 43, which moves the stop block 41 into the groove 121. The stop block 41 disengages from the slot 11, and the housing 1 can then be opened.

[0032] Please see Figure 2 Figure 3 As shown in this embodiment, the bottom surface of the housing 1 has receiving grooves 13 located on the outer edges of the positive electrode storage tank 31, the negative electrode storage tank 32, and the functional component 33. Each receiving groove 13 contains a leakage detection rope 5. The leakage detection rope 5 is a sensor for detecting liquid leakage, typically consisting of two lightweight high-density polyethylene wires pressed around a spiral axis; details will not be elaborated here. It should be noted that one end of each leakage detection rope 5 passes through the housing 1 and connects to a controller (not shown in the figure) on the outside of the housing 1. By winding the leakage detection rope 5 in each receiving groove 13, the positive electrode storage tank 31, the negative electrode storage tank 32, and the functional component 33 can be detected separately to identify the fault area when insulation performance deteriorates, facilitating maintenance by personnel.

[0033] Preferably, the outer edge of the bottom surface of the receiving tank 13 extends downward at an angle away from the corresponding positive electrode storage tank 31, negative electrode storage tank 32, and functional component 33, and each leakage detection rope 5 is wound around the outer edge of the corresponding receiving tank 13. For example, the bottom surface of the receiving tank 13 below the positive electrode storage tank 31 extends downward at an angle away from the positive electrode storage tank 31. In this way, when liquid flows into the receiving tank 13, it will converge towards the outer edge of the receiving tank 13, that is, towards the direction of the leakage detection rope 5. In this way, the leakage detection rope 5 can better sense liquid leakage and promptly remind the device of a decline in insulation performance.

[0034] In this embodiment, a liquid storage tank 2 is fixedly installed at the bottom of the housing 1, and each receiving tank 13 is provided with at least one leakage hole 14 communicating with the liquid storage tank 2. By setting up the liquid storage tank 2, liquid can be collected to avoid a large amount of liquid leaking out of the battery assembly 3, causing liquid to overflow the receiving tank 13, or even overflow the housing 1 and cause damage to personnel and the environment.

[0035] Preferably, the leakage hole 14 is located near the inner edge of the corresponding receiving tank 13. This is because the outer edge of the bottom surface of the receiving tank 13 extends downwards in a direction away from the corresponding positive electrode storage tank 31, negative electrode storage tank 32, and functional component 33; that is, the bottom surface of the receiving tank 13 is inclined, and the horizontal height of the inner edge of the receiving tank 13 is higher than the horizontal height of the outer edge. Therefore, the leakage hole 14 is located near the inner edge of the corresponding receiving tank 13 to prevent liquid from flowing directly into the storage tank 2 through the leakage hole 14 instead of flowing to the leakage detection rope 5.

[0036] Preferably, a cover plate 15 is fixed to the top of the leakage hole 14, and a gap 16 is formed between the side of the cover plate 15 near the outer edge of the corresponding receiving tank 13 and the top surface of the leakage hole 14. By providing the cover plate 15, liquid is further prevented from flowing directly from the leakage hole 14 into the storage tank 2. In practice, the leaked liquid flows into the receiving tank 13 and flows from the inner edge of the receiving tank 13 to the outer edge of the receiving tank 13. When the liquid flows above the leakage hole 14, it can be blocked by the cover plate 15 and continues to flow towards the outer edge of the receiving tank 13. When the leaked liquid is too large, that is, when the horizontal height of the leaked liquid is higher than the leakage hole 14, the liquid can flow into the storage tank 2 for storage through the gap 16 between the cover plate 15 and the leakage hole 14.

[0037] The above description is only a preferred embodiment of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. An online insulation testing device for a vanadium battery, comprising a housing (1) and a battery assembly (3) fixed within the housing (1), the battery assembly (3) comprising a positive electrode storage tank (31), a negative electrode storage tank (32), and a functional component (33), characterized in that, The bottom surface of the box (1) is provided with receiving grooves (13) on the outer edge of the positive electrode storage tank (31), the negative electrode storage tank (32) and the functional component (33), and each receiving groove (13) is provided with a leakage detection rope (5).

2. The online insulation testing device for vanadium batteries according to claim 1, characterized in that, The outer edge of the bottom surface of the receiving tank (13) extends downward in a direction away from the corresponding positive electrode storage tank (31), negative electrode storage tank (32) and functional component (33), and each of the leakage detection ropes (5) is respectively wrapped around the outer edge of the corresponding receiving tank (13).

3. The online insulation testing device for vanadium batteries according to claim 2, characterized in that, The bottom of the box (1) is fixed with a liquid storage tank (2), and each of the receiving slots (13) is provided with at least one leakage hole (14) that communicates with the liquid storage tank (2).

4. The online insulation testing device for vanadium batteries according to claim 3, characterized in that, The leakage hole (14) is close to the inner edge of the corresponding receiving groove (13).

5. The online insulation testing device for vanadium batteries according to claim 4, characterized in that, A cover plate (15) is fixedly provided at the top of the leakage hole (14), and there is a gap (16) between the side of the cover plate (15) near the outer edge of the corresponding receiving groove (13) and the top surface of the leakage hole (14).

6. The online insulation testing device for vanadium batteries according to claim 1, characterized in that, The front side of the box (1) is provided with an opening, and the opening side of the box (1) is provided with a door (12). The bottom end of the door (12) is hinged to the box (1), and the top end of the door (12) is provided with multiple snap-fit ​​components (4).

7. The online insulation testing device for vanadium batteries according to claim 6, characterized in that, The top surface of the box (1) is provided with multiple slots (11), and multiple snap-fit ​​components (4) are respectively snapped in the multiple slots (11). Each snap-fit ​​component (4) includes a groove (121) provided on the top surface of the box door (12), a stop block (41) slidably provided in the groove (121), and a first spring (42) for pushing the stop block (41) to move away from the groove (121).

8. The online insulation testing device for vanadium batteries according to claim 7, characterized in that, The groove (121) has a sliding groove (122) connected to the outside on the side away from the box (1). A pull plate (43) is fixed on one side of the stop (41). The free end of the pull plate (43) extends through the sliding groove (122) in a direction away from the box (1).

9. The online insulation testing device for vanadium batteries according to claim 8, characterized in that, The block (41) has a beveled surface (411) on the side near the box (1), and the beveled surface (411) extends upward from the middle of the block (41) away from the box (1).

10. The online insulation testing device for vanadium batteries according to claim 1, characterized in that, One end of each of the leakage detection ropes (5) passes through the box (1) and is connected to the controller on the outside of the box (1).

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