Flow battery intelligent inspection integrated cell plate

Abstract

The utility model discloses a liquid flow battery intelligent inspection integrated electric core board relates to electric core board technical field, including integrated conductive special -shaped piece, plug -in row, flow channel subassembly, annular sealing groove and sealing reinforcement spare. The utility model discloses plug -in row is used for connecting electric core board main part with the quick connection of inspection equipment, realizes the on -line monitoring to positive potential, carries out potential detection and fault diagnosis, determines the abnormal electric core board, guides the quick repair of electric pile, realizes the sealing to integrated conductive special -shaped piece lead -out end through plug -in row, prevents electrolyte leakage and the entry of external impurity, has improved the security and reliability of system, when the electric pile appears the exception, can connect the inspection with the row plug -in needle type connector temporarily, carries out potential detection and fault diagnosis to the lead -out end of integrated conductive special -shaped piece, determines the fault electric core board position serial number through the analysis detection data, carries out the reason analysis automatically, carries out the targeted maintenance and repair.

Description

Technical Field

[0001] This utility model relates to the field of battery cell board technology, specifically to an integrated intelligent inspection battery cell board for flow batteries. Background Technology

[0002] Zinc-bromine flow batteries, as a novel and highly efficient electrochemical energy storage device, offer advantages such as high energy density and low cost, showing great promise for application in the user-side energy storage field. Flow battery stacks typically consist of dozens to hundreds of cell plates (or electrode plates + separators), with sealing between the plates being crucial. The bipolar plate is an important component of a flow battery. Located between the positive and negative electrodes, it isolates the electrodes, prevents short circuits, and allows the electrolyte solution to flow between them. The cell plates (commonly called bipolar plates) are the core components of the flow battery stack, undertaking key functions such as conductivity, liquid resistance, support, and fluid distribution; their performance directly affects battery efficiency, lifespan, and cost.

[0003] Currently, bipolar plates in zinc-bromine flow batteries are typically made of carbon-plastic substrates, which can also be used as electrodes. While ensuring electrode conductivity and activity, the bipolar plates need to possess sufficient mechanical strength, deformation resistance, and corrosion resistance. During operation, zinc-bromine flow batteries require monitoring of electrode potential to ensure safe and stable operation; however, existing cell plates (bipolar plates) do not have separate electrode sheets for fault detection, making it impossible to quickly and accurately locate individual bipolar plates within the flow battery stack.

[0004] For example, the aforementioned problem exists in patent (CN223273301U); it describes that "the bipolar plate of the flow battery mainly includes a plate body, and flow channels are opened in the electrode area of ​​the plate body that contacts the electrode. The electrode area has an inlet side and an outlet side for the electrolyte. The flow channels include multiple guide channels one and multiple guide channels two. The guide channels one extends from the inlet side of the electrolyte to the outlet side. The guide channels two have a wavy structure and extend along the direction intersecting with the guide channels one. The multiple guide channels two extend along the length of the guide channels one." The flow guides are arranged at intervals, and the end of each flow guide one is connected to the corner of the adjacent flow guide two to form a polygonal flow guide structure that is concave inward along the direction from the inlet side to the outlet side of the electrolyte. The bipolar plate of the flow battery of this utility model can improve the uniformity of electrolyte flow distribution, reduce flow dead zones, and reduce pressure drop. However, the flow battery bipolar plate in the above-mentioned patent does not have an inspection interface, so it is impossible to inspect and diagnose faults of individual bipolar plates in the stack, and it is impossible to quickly and accurately locate the faulty bipolar plate in the stack.

[0005] To address the problem that existing cell boards (bipolar plates) do not have separate electrode plates for fault inspection, making it impossible to quickly and accurately locate individual bipolar plates in the flow battery stack, we propose an integrated intelligent inspection cell board for flow batteries. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated intelligent inspection cell board for flow batteries to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an integrated intelligent inspection cell board for flow batteries, comprising a cell board body, an integrated conductive irregular block inside the cell board body, a lead-out end of the integrated conductive irregular block extending to the outside of the cell board body and having a plug-in strip, a flow channel assembly on one side of the outer wall of the cell board body, a plurality of annular sealing grooves on both sides of the outer wall of the cell board body on the outside of the flow channel assembly, and a plurality of sealing reinforcements on the outer wall of the cell board body on the outside of the annular sealing grooves.

[0008] Furthermore, the flow channel assembly includes a flow channel inlet, a flow channel outlet, and a spiral flow channel, wherein the flow channel inlet is connected to one end of the spiral flow channel, and the flow channel outlet is connected to the other end of the spiral flow channel.

[0009] Furthermore, two annular sealing grooves are provided, and the two annular sealing grooves are distributed in an inner and outer double layer. Four sealing reinforcements are provided, and the four sealing reinforcements are respectively located at the four corners of the outer wall of the battery cell board body.

[0010] Furthermore, the sealing reinforcement includes a support sleeve, which is fixedly connected to the outer wall of the battery cell board body. The outer wall of the support sleeve is provided with a support plate, and the outer wall of the support plate is provided with a plurality of first support grooves and second support grooves. A baffle is provided on the side of the outer wall of the support plate near the battery cell board body on the inner side of the first support groove.

[0011] Furthermore, the support plate is suspended, the first support groove is a strip-shaped groove, the second support groove is a triangular groove, and the first support groove and the second support groove are staggered.

[0012] Furthermore, one end of the integrated conductive irregular block is a flat end, and the other end of the integrated conductive irregular block is an irregular end with barbs.

[0013] Furthermore, the integrated conductive irregularly shaped block is embedded inside the main body of the battery cell board. The flat end of the integrated conductive irregularly shaped block is welded to the positive end of the conductive lug of the main body of the battery cell board. The irregularly shaped end of the integrated conductive irregularly shaped block is fixed by a barbed structure in conjunction with the reserved groove of the flow channel frame.

[0014] Furthermore, the integrated conductive irregular block is made of copper alloy or aluminum alloy, with nickel plating on the surface. The flat end has a size of 9-14 mm, the irregular end has a size of 5-7 mm, the height of the barbs on the irregular end is 0.5-2 mm, and the tilt angle of the barbs on the irregular end is 30-60 degrees.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are: 1. This utility model incorporates an integrated conductive irregularly shaped block, a connector strip, a flow channel assembly, an annular sealing groove, and sealing reinforcement components. The integrated conductive irregularly shaped block conducts electricity within the main body of the battery cell board. The connector strip connects and supports the lead-out end of the integrated conductive irregularly shaped block. The connector strip connects to the matching pin-type connector of the inspection equipment on the outside of the main body of the battery cell board. The connector strip facilitates rapid connection between the main body of the battery cell board and the inspection equipment, enabling online monitoring of the positive electrode potential, potential detection, and fault diagnosis to identify abnormal battery cells and guide rapid repair of the battery stack. The connector strip also seals the lead-out end of the integrated conductive irregularly shaped block, preventing electrolyte leakage and the entry of external impurities. This improves the safety and reliability of the system. When the stack malfunctions, a temporary inspection pin-type connector can be connected to perform potential detection and fault diagnosis on the leads of the integrated conductive irregular block. By analyzing the detection data, the location number of the faulty cell board can be determined, and the cause can be automatically analyzed for targeted maintenance and repair. Through structural and process innovation, combined with an integrated flow channel frame, faulty cell boards can be quickly located, preventing the stack from being scrapped due to the failure of one or more cell boards. This improves the performance, reliability, and service life of the zinc-bromine flow battery, reduces system cost and maintenance difficulty, and provides technical support for the application of zinc-bromine flow batteries in large-scale energy storage.

[0016] 2. This utility model features a sealing reinforcement component comprising a support sleeve, a support plate, a first support groove, and a second support groove. The support sleeve supports the support plate, while the first and second support grooves provide openwork support on the surface of the support plate. During use, sealant completely fills and encapsulates the sealing reinforcement component, filling the support sleeve and simultaneously filling the first and second support grooves on the support plate. The support sleeve, support plate, first and second support grooves work together to provide multiple limiting supports for the sealant, effectively reinforcing the sealant layer and improving its stability on the outer wall of the battery cell board in the fuel cell stack. A baffle plate adds limiting barriers to the inner wall of the first support groove, effectively enhancing the limiting effect of the first support groove on the sealant. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this practical sealing reinforcement component; Figure 3 This is a structural schematic diagram of the sealing reinforcement component of this utility model from another angle; Figure 4 This is a schematic diagram of the integrated conductive irregular block of this utility model; In the figure: 1. Battery cell board body; 2. Connector bar; 3. Flow channel assembly; 301. Flow channel inlet; 302. Flow channel outlet; 303. Spiral flow channel; 4. Annular sealing groove; 5. Sealing reinforcement; 501. Support sleeve; 502. Support plate; 503. First support groove; 504. Second support groove; 505. Baffle; 6. Integrated conductive irregular block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0019] Please see Figure 1 and Figure 4 This utility model provides a technical solution: an integrated intelligent inspection cell board for flow batteries, comprising a cell board body 1, an integrated conductive irregular block 6 inside the cell board body 1, a lead-out end of the integrated conductive irregular block 6 extending to the outside of the cell board body 1 and having a plug-in strip 2, a flow channel assembly 3 on one side of the outer wall of the cell board body 1, and several annular sealing grooves 4 on both sides of the outer wall of the cell board body 1 on the outside of the flow channel assembly 3, and several sealing reinforcement parts 5 on the outer wall of the cell board body 1 on the outside of the annular sealing grooves 4; the flow channel assembly 3 includes a flow channel inlet 301, a flow channel outlet 302 and a spiral flow channel 303, the flow channel inlet 301 being connected to one end of the spiral flow channel 303, and the flow channel outlet 302 being connected to the other end of the spiral flow channel 303.

[0020] In one embodiment, two annular sealing grooves 4 are provided, and the two annular sealing grooves 4 are distributed in an inner and outer double layer. The two annular sealing grooves 4 cooperate to achieve double sealing treatment on the outside of the flow channel, which can effectively improve the sealing treatment effect of the battery plate in the stack. Four sealing reinforcement members 5 are provided, and the four sealing reinforcement members 5 are respectively provided at the four corners of the outer wall of the battery plate body 1. The four sealing reinforcement members 5 can reinforce and seal the battery plate body 1 at the four corners, which can effectively improve the sealing stability of the battery plate inside the stack.

[0021] In one embodiment, one end of the integrated conductive irregularly shaped block 6 is a flat end, and the other end is an irregularly shaped end with barbs. The integrated conductive irregularly shaped block 6 is embedded inside the battery cell board body 1. The flat end of the integrated conductive irregularly shaped block 6 is welded to the positive terminal of the conductive lug of the battery cell board body 1, and the irregularly shaped end of the integrated conductive irregularly shaped block 6 is fixed to the pre-reserved groove of the flow channel frame through the barb structure. The stability and reliability of the integrated conductive irregularly shaped block 6 are improved by the barb fixing and welding connection method. The barb structure is processed at the irregularly shaped end to ensure reliable fixing in the pre-reserved groove of the flow channel frame. The integrated conductive irregularly shaped block 6 adopts an embedded design, avoiding the influence of the external environment on the conductive block and improving the stability and reliability of the battery stack. The barb fixing structure ensures that the connection between the integrated conductive irregularly shaped block 6 and the flow channel frame is firm and reliable, avoiding the loosening and poor contact problems that may occur with traditional connection methods.

[0022] In one embodiment, the integrated conductive irregular block 6 is made of copper alloy or aluminum alloy and has a nickel-plated surface to improve conductivity and corrosion resistance; the flat end has a size of 9-14 mm; the irregular end has a size of 5-7 mm; the height of the barbs on the irregular end is 0.5-2 mm; and the inclination angle of the barbs on the irregular end is 30-60 degrees.

[0023] The working principle of this utility model: Refer to the instruction manual appendix Figure 1 and Figure 4This invention utilizes an integrated conductive irregularly shaped block 6, a plug-in strip 2, a flow channel assembly 3, an annular sealing groove 4, and a sealing reinforcement 5. The integrated conductive irregularly shaped block 6 conducts electricity inside the battery cell board body 1. The plug-in strip 2 connects and supports the lead-out end of the integrated conductive irregularly shaped block 6. The plug-in strip 2 connects to the matching row of pin connectors of the inspection equipment on the outside of the battery cell board body 1, preventing accidental contact, electrolyte leakage, and the entry of external impurities. The plug-in strip 2 also facilitates quick connection between the battery cell board body 1 and the inspection equipment, enabling online monitoring of the positive electrode potential, potential detection, and fault diagnosis to identify abnormal battery cells and guide rapid repair of the battery stack. The plug-in strip 2 seals the lead-out end of the integrated conductive irregularly shaped block 6, preventing electrolyte leakage and the entry of external impurities, thus improving the system's safety and reliability. The matching inspection row of pin connectors enables online monitoring of the positive electrode potential of the battery cell board body 1 and temporary detection under abnormal conditions, improving the system's maintainability and fault diagnosis capabilities. When online monitoring of the battery pack is required, open the connector 2 and connect the matching inspection connector pin type to the lead-out end of the integrated conductive irregular block 6; the monitoring system obtains positive electrode potential data through the inspection connector pin type and performs real-time monitoring and analysis; after monitoring is completed, disconnect the inspection connector pin type and close the connector 2 again to restore the sealed state; measure the voltage difference and internal resistance of the lead-out end of the integrated conductive irregular block 6 using the inspection instrument, and analyze the measurement results based on the AC impedance method to identify and locate the faulty battery cell board body 1; if the voltage of a single battery cell board is lower than the preset voltage threshold, it is determined that the electrode plate is damaged; if the AC internal resistance of a single battery cell board is higher or lower than the preset internal resistance threshold, it is determined that the electrode plate is damaged. When the battery stack malfunctions, a temporary inspection pin-type connector can be connected to perform potential detection and fault diagnosis at the leads of the integrated conductive irregular block 6. By analyzing the detection data, the location and sequence number of the faulty cell board can be determined, and the cause can be automatically analyzed for targeted maintenance and repair. The integrated conductive irregular block 6 allows for easy extraction of the positive electrode potential, enabling online monitoring and fault diagnosis of the battery stack. The embedded design of the integrated conductive irregular block 6 reduces the number of external connectors, lowering system complexity and maintenance workload. Fault diagnosis and location are more convenient, improving the maintainability and fault handling efficiency of the battery stack. Through structural and process innovations, combined with the integrated flow channel frame, faulty cell boards can be quickly located, preventing the battery stack from being scrapped due to the failure of one or more cell boards. This improves the performance, reliability, and service life of the zinc-bromine flow battery, reduces system cost and maintenance difficulty, and provides technical support for the application of zinc-bromine flow batteries in large-scale energy storage. The flow channel assembly 3 is used to provide a liquid flow channel for the flow battery on the cell board body 1. The liquid of the flow battery enters the spiral flow channel 303 from the flow channel inlet 301 and then moves to the next stage equipment from the flow channel outlet 302. The annular sealing groove 4 provides a sealing groove for the sealant, so that the sealant seals the cell board body 1 inside the annular sealing groove 4. The sealing reinforcement 5 is used to seal and reinforce the sealant outside the annular sealing groove 4, which can effectively improve the safety and stability of the sealing layer. Example 2

[0024] Please see Figures 1-4 This utility model provides a technical solution: an integrated intelligent inspection cell board for flow batteries. The sealing reinforcement 5 includes a support sleeve 501, which is fixedly connected to the outer wall of the cell board body 1. The outer wall of the support sleeve 501 is provided with a support plate 502. The outer wall of the support plate 502 is provided with a plurality of first support grooves 503 and second support grooves 504. A baffle 505 is provided on the inner side of the first support groove 503 on the side of the outer wall of the support plate 502 near the cell board body 1. The support plate 502 is suspended. The first support groove 503 is a strip-shaped groove, and the second support groove 504 is a triangular groove. The first support groove 503 and the second support groove 504 are staggered.

[0025] The working principle of this utility model: Refer to the instruction manual appendix Figures 1-4 This utility model, through the setting of a sealing reinforcement 5 including a support sleeve 501, a support plate 502, a first support groove 503, and a second support groove 504, provides support for the support plate 502 via the support sleeve 501. The first support groove 503 and the second support groove 504 provide hollow support on the surface of the support plate 502. In use, the sealant completely fills and encapsulates the sealing reinforcement 5, filling the support sleeve 501 and simultaneously filling the first support groove 503 and the second support groove 504 on the support plate 502. The support sleeve 501, support plate 502, first support groove 503, and second support groove 504 work together to achieve multiple limiting supports for the sealant, effectively reinforcing the sealant layer and improving the stability of the sealant on the outer wall of the battery cell board in the fuel cell stack. The baffle 505 adds limiting barriers to the inner wall of the first support groove 503, which effectively increases the limiting effect of the first support groove 503 on the sealant. By suspending the support plate 502, the sealant can enter both sides of the outer wall of the support plate 502, thus wrapping the support plate 502 and further improving the sealing effect of the support plate 502, the first support groove 503, and the second support groove 504 on the sealant. The first support groove 503 is designed as a strip-shaped groove, and the second support groove 504 is designed as a triangular groove. The strip-shaped first support groove 503 can effectively provide strip-shaped sealing support for the sealant, and the triangular groove 504 can effectively provide triangular sealing support for the sealant. This can effectively improve the diversity of sealing support and the sealing effect. The staggered arrangement of the first support groove 503 and the second support groove 504, with the strip-shaped and triangular sealing structures of the sealant interspersed, can further improve the sealing effect.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated intelligent inspection cell board for flow batteries, comprising a cell board body (1), characterized in that: The battery cell board body (1) has an integrated conductive irregular block (6) inside. The lead-out end of the integrated conductive irregular block (6) extends to the outside of the battery cell board body (1) and is provided with a plug-in bar (2). The battery cell board body (1) has a flow channel assembly (3) on one side of its outer wall. The battery cell board body (1) has several annular sealing grooves (4) on both sides of its outer wall outside the flow channel assembly (3). The battery cell board body (1) has several sealing reinforcement parts (5) on the outer wall outside the annular sealing grooves (4).

2. The integrated intelligent inspection cell board for flow batteries according to claim 1, characterized in that: The flow channel assembly (3) includes a flow channel inlet (301), a flow channel outlet (302) and a spiral flow channel (303). The flow channel inlet (301) is connected to one end of the spiral flow channel (303), and the flow channel outlet (302) is connected to the other end of the spiral flow channel (303).

3. The integrated intelligent inspection cell board for flow batteries according to claim 1, characterized in that: Two annular sealing grooves (4) are provided, and the two annular sealing grooves (4) are distributed in an inner and outer double layer. Four sealing reinforcement parts (5) are provided, and the four sealing reinforcement parts (5) are respectively located at the four corners of the outer wall of the battery cell board body (1).

4. The integrated intelligent inspection cell board for flow batteries according to claim 1, characterized in that: The sealing reinforcement (5) includes a support sleeve (501), which is fixedly connected to the outer wall of the battery cell board body (1). The outer wall of the support sleeve (501) is provided with a support plate (502). The outer wall of the support plate (502) is provided with a plurality of first support grooves (503) and second support grooves (504). The outer wall of the support plate (502) near the battery cell board body (1) is provided with a baffle (505) inside the first support groove (503).

5. The integrated intelligent inspection cell board for flow batteries according to claim 4, characterized in that: The support plate (502) is suspended, the first support groove (503) is a strip-shaped groove, and the second support groove (504) is a triangular groove. The first support groove (503) and the second support groove (504) are arranged alternately.

6. The integrated intelligent inspection cell board for flow batteries according to claim 1, characterized in that: One end of the integrated conductive irregular block (6) is a flat end, and the other end of the integrated conductive irregular block (6) is an irregular end with barbs.

7. The integrated intelligent inspection cell board for flow batteries according to claim 6, characterized in that: The integrated conductive irregular block (6) is embedded inside the battery cell board body (1). The flat end of the integrated conductive irregular block (6) is welded to the positive end of the conductive lug of the battery cell board body (1). The irregular end of the integrated conductive irregular block (6) is fixed with the reserved groove of the flow channel frame through the barb structure.

8. The integrated intelligent inspection cell board for flow batteries according to claim 6, characterized in that: The integrated conductive irregular block (6) is made of copper alloy or aluminum alloy, with nickel plating on the surface. The flat end size is 9-14mm; the irregular end size is 5-7mm; the height of the irregular end barbs is 0.5-2mm; and the inclination angle of the irregular end barbs is 30-60 degrees.

Images