Bipolar plate assembly of flow battery

Abstract

The invention relates to the technical field of flow batteries, in particular to a flow battery bipolar plate assembly, which comprises a first substrate and a second substrate, a plurality of groups of bipolar plates are clamped and mounted between the first substrate and the second substrate, and a plurality of mounting bolts are mounted on the first substrate and the second substrate in a tensioning manner; the bottom plate is fixedly installed on the side faces of the first substrate and the second substrate, a cooling fan used for extracting air between the bottom plate and the bipolar plate is fixedly installed at the end, away from the bipolar plate, of the bipolar plate, and an adjusting assembly is arranged on the end face, facing the bipolar plate, of the bottom plate; the adjusting assembly is used for guiding airflow outside the bipolar plate to enter the cooling fan after the bipolar plate is installed. According to the invention, a plurality of bipolar plates can abut against the vertical plane in the process of stacking and placing, the plurality of bipolar plates can be aligned and mounted more accurately and efficiently, the alignment and mounting of the bipolar plates can be completed more efficiently, and the vertical plane does not need to be dismounted.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid flow batteries, and in particular to a liquid flow battery bipolar plate assembly. Background Art

[0002] Flow Battery is a very promising large-scale energy storage technology with the characteristics of high safety, high cycle life and scalability. Bipolar plate, also known as current collector or separator, is one of the important components of fuel cells. It has the functions of current conduction, separation of fuel and oxidant, gas transportation and thermal management during the operation of flow battery.

[0003] During the installation process of the bipolar plate assembly, multiple bipolar plates are usually stacked and aligned, and then the top of the bipolar plates are squeezed by hydraulic equipment to make the multiple bipolar plates closely contact each other and fixed by multiple sets of mounting bolts. During the assembly process of multiple bipolar plates, a vertical plane plate needs to be placed on the side of the bipolar plate to guide the assembly of the bipolar plates. After the assembly is completed, the vertical plane plate needs to be separated, which reduces the assembly efficiency of the bipolar plate assembly. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a liquid flow battery bipolar plate assembly, which can effectively solve the problem that during the assembly process of multiple bipolar plates in the prior art, a vertical plane plate needs to be placed on the side of the bipolar plate to guide the assembly of the bipolar plates, and after the assembly is completed, the vertical plane plate needs to be separated, which will reduce the assembly efficiency of the bipolar plate assembly.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a bipolar plate assembly for a liquid flow battery, comprising a first substrate and a second substrate, wherein a plurality of bipolar plates are clamped and installed between the first substrate and the second substrate, and a plurality of mounting bolts are tightened and installed on the first substrate and the second substrate;

[0009] A bottom plate is fixedly mounted on the sides of the first substrate and the second substrate, a cooling fan for extracting air between the bottom plate and the bipolar plate is fixedly mounted on one end of the bottom plate away from the bipolar plate, and an adjustment component for assisting alignment during the alignment and installation of multiple groups of bipolar plates is arranged on the end surface of the bottom plate facing the bipolar plate;

[0010] Among them, the regulating component is used to guide the airflow outside the bipolar plate into the interior of the heat dissipation fan after the bipolar plate is installed.

[0011] Furthermore, the adjustment components have two groups and are symmetrically installed on both sides of the base plate. The heat dissipation fan is embedded in the base plate, and a docking plate is fixedly installed on the outer side of the heat dissipation fan.

[0012] Furthermore, each group of adjustment components includes a first guide plate and a second guide plate distributed up and down, the first guide plate is slidably installed on the first base plate, an extension plate is arranged at an interval at one end of the first guide plate facing the second guide plate, and a sliding groove for the extension plate to slide into is arranged on the second guide plate, and fixed plates are fixedly installed on the end surfaces of the first guide plate and the second guide plate facing the bottom plate, and an elastic member is fixedly installed between the two fixed plates on the first guide plate and the second guide plate, and the elastic member is used to drive the first guide plate to move upward.

[0013] Furthermore, a plurality of guide rails are fixedly mounted on the end surface of the bottom plate facing the bipolar plate, a slide groove for fitting on the outside of the guide rail is arranged on the second base plate, and a bolt mounting hole for allowing mounting bolts to pass through is arranged on the second base plate.

[0014] Furthermore, a fixing rod is fixedly installed in the middle part of the base plate, a driving rod is rotatably installed on the end surface of the fixing rod away from the base plate, the middle part of the driving rod is rotatably connected to the fixing rod, the upper end of the driving rod slides up and down and is rotatably connected to the second guide plate, and a lifting frame is rotatably installed on the lower end of the driving rod, and the upper and lower parts of the lifting frame are used to adjust the distance between the first guide plate and the second guide plate and the base plate.

[0015] Furthermore, a linkage plate is slidably mounted on the bottom plate, the linkage plate is slidably connected to the guide rail, a rotating connecting shaft is rotatably mounted on the top of the lifting frame, and the linkage plate is fixedly connected to the rotating connecting shaft.

[0016] Furthermore, a spring is fixedly installed on the upper end surface of the fixing rod, a cross bar is fixedly installed in the middle of the lifting frame, the upper end of the spring is connected to the cross bar, and the spring is used to drive the lifting frame to move upward.

[0017] Furthermore, a bending plate is fixedly installed on the same side of the first guide plate and the second guide plate, and the bending plate is used to dock with the docking plate. After the first guide plate moves downward, the two bending plates on the first guide plate and the second guide plate are tightly connected to each other.

[0018] Furthermore, a mounting plate for connecting to an external plane is fixedly mounted on the end face of the bottom plate away from the bipolar plate, and side plates are fixedly mounted on both ends of the bottom plate facing the end face of the bipolar plate, and the side plates are used to guide the second substrate to slide toward the first substrate.

[0019] Furthermore, a plurality of support plates are fixedly mounted on the end surface of the first substrate away from the bipolar plate, and the support plates are used to support the first substrate during the assembly of the multi-layer bipolar plate.

[0020] Beneficial Effects

[0021] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0022] 1. The present invention fixes a bottom plate on the same side of a first substrate and a second substrate, and sets an adjustment component on the bottom plate. During the stacking and assembly process of multiple bipolar plates, the adjustment component forms a vertical plane, so that the multiple bipolar plates can be closely placed on the vertical plane during the stacking process, and the multiple bipolar plates can be aligned and installed more accurately and efficiently, and the alignment and installation of the bipolar plates can be completed more efficiently without removing the vertical plane.

[0023] 2. In the present invention, after the stacking and assembly of the bipolar plates is completed, the pressure of the hydraulic equipment is used to drive the lifting frame to move downward, so that the first guide plate and the second guide plate slide toward the bottom plate, and the first guide plate and the second guide plate are docked with the docking plate through the bending plate, and a heat dissipation channel for rapid air flow is formed between the first guide plate and the second guide plate and the multiple groups of bipolar plates, thereby avoiding heat accumulation near the bipolar plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the bottom structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall structure of the present invention without the bipolar plate;

[0028] Figure 4 is a side view of the assembly process of the present invention;

[0029] Figure 5 It is a schematic diagram of the overall structure of the regulating assembly of the present invention;

[0030] Figure 6 It is a schematic diagram of the installation structure of the lifting frame of the present invention.

[0031] The numbers in the figure represent:

[0032] 1. bipolar plate; 2. first substrate; 21. support plate; 3. second substrate; 301. slide groove; 302. bolt mounting hole;

[0033] 4. Bottom plate; 41. Cooling fan; 411. Docking plate; 42. Mounting plate; 43. Side plate; 44. Linkage plate; 45. Guide rail;

[0034] 5. Adjustment assembly; 51. First guide plate; 52. Second guide plate; 521. Bending plate; 53. Driving rod; 54. Elastic member; 55. Fixed plate; 56. Lifting frame; 561. Rotating connecting shaft; 562. Cross bar; 57. Fixed rod; 571. Spring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention will be further described below in conjunction with the embodiments.

[0037] Embodiment: A bipolar plate assembly of a flow battery, such as Figure 1 - Figure 6 As shown, it includes a first substrate 2 and a second substrate 3, a plurality of groups of bipolar plates 1 are clamped and installed between the first substrate 2 and the second substrate 3, and a plurality of mounting bolts are tightened and installed on the first substrate 2 and the second substrate 3;

[0038] A bottom plate 4 is fixedly mounted on the side of the first substrate 2 and the second substrate 3, and a heat dissipation fan 41 for extracting air between the bottom plate 4 and the bipolar plate 1 is fixedly mounted on one end of the bottom plate 4 away from the bipolar plate 1, and an adjustment component 5 for assisting alignment during the alignment and installation of multiple groups of bipolar plates 1 is arranged on the end surface of the bottom plate 4 facing the bipolar plate 1;

[0039] The regulating assembly 5 is used to guide the airflow outside the bipolar plate 1 into the interior of the heat dissipation fan 41 after the bipolar plate 1 is installed.

[0040] In the present invention, by fixing the bottom plate 4 on the same side of the first substrate 2 and the second substrate 3, and arranging the adjustment component 5 on the bottom plate 4, during the stacking and assembly process of the multiple bipolar plates 1, the adjustment component 5 forms a vertical plane, so that the multiple bipolar plates 1 can be close to the vertical plane during the stacking process, and the multiple bipolar plates 1 can be aligned and installed more accurately and efficiently. After the installation is completed, there is no need to remove the adjustment component 5. The adjustment component 5 can be used to guide the flow of the heat dissipation airflow after being adjusted in the use state. By arranging the heat dissipation fan 41 on the bottom plate 4, the heat generated during the operation of the bipolar plate 1 can be discharged more efficiently, and the battery performance degradation caused by heat accumulation on the surface of the bipolar plate can be avoided.

[0041] In the stacking and assembly process of the bipolar plate 1, the first substrate 2 is first placed downward on the mounting table (such as Figure 3 ), then place multiple bipolar plates 1 close to the adjustment assembly 5 and downward, so that the multiple bipolar plates 1 are aligned with each other, then cover the second substrate 3 on the stacked bipolar plates 1 and use hydraulic equipment to press on the second substrate 3, so that the various bipolar plates 1 are tightly connected together (sealing colloid is coated on both sides of each bipolar plate 1, and a sealed space can be formed between two adjacent bipolar plates 1 by pressing each other), and then fix them by installing bolts that pass through the second substrate 3, the bipolar plate 1 and the first substrate 2 in sequence.

[0042] Furthermore, the adjustment component 5 has two groups and is symmetrically installed on both sides of the base plate 4. The heat dissipation fan 41 is embedded in the base plate 4. A docking plate 411 is fixedly installed on the outer side of the heat dissipation fan 41. The air outlet of the heat dissipation fan 41 extends between the base plate 4 and the bipolar plate 1.

[0043] Furthermore, each group of adjustment components 5 includes a first guide plate 51 and a second guide plate 52 distributed up and down, the first guide plate 51 is slidably installed on the first base plate 2, an extension plate is arranged at an interval at one end of the first guide plate 51 facing the second guide plate 52, and a sliding groove for the extension plate to slide into is arranged on the second guide plate 52, and a fixing plate 55 is fixedly installed on the end surfaces of the first guide plate 51 and the second guide plate 52 facing the bottom plate 4, and an elastic member 54 is fixedly installed between the two fixing plates 55 on the first guide plate 51 and the second guide plate 52, and the elastic member 54 is used to drive the first guide plate 51 to move upward.

[0044] Among them, by arranging the first guide plate 51 and the second guide plate 52 up and down and making the first guide plate 51 and the second guide plate 52 slide against each other, during the assembly process, since there is no external force pressing down on the first guide plate 51, the first guide plate 51 will move upward for a distance under the elastic force of the elastic member 54, and the height of the vertical plane (the plane for aligning multiple bipolar plates 1 with each other) can be increased to adapt to the stacking of multiple bipolar plates 1 to a higher height when they are not pressed against each other.

[0045] Furthermore, a plurality of guide rails 45 are fixedly mounted on the end surface of the bottom plate 4 facing the bipolar plate 1, a slide groove 301 for fitting on the outside of the guide rail 45 is provided on the second base plate 3, and a bolt mounting hole 302 for the mounting bolt to pass through is provided on the second base plate 3.

[0046] Among them, by setting the guide rail 45 on the bottom plate 4, the second substrate 3 can be more conveniently covered above the stacked bipolar plates 1, and the second substrate 3 can be easily slid to the specified position, reducing the alignment and installation steps of the second substrate 3 during the assembly process of the bipolar plates 1.

[0047] Furthermore, a fixing rod 57 is fixedly installed in the middle of the base plate 4, and a driving rod 53 is rotatably installed on the end surface of the fixing rod 57 away from the base plate 4. The middle part of the driving rod 53 is rotatably connected to the fixing rod 57, and the upper end of the driving rod 53 slides up and down and is rotatably connected to the second guide plate 52. A lifting frame 56 is rotatably installed on the lower end of the driving rod 53, and the upper and lower parts of the lifting frame 56 are used to adjust the distance between the first guide plate 51 and the second guide plate 52 and the base plate 4.

[0048] Among them, by installing a fixing rod 57 on the base plate 4 and arranging a driving rod 53 on the fixing rod 57 for adjusting the sliding position of the second guide plate 52, during the stacking and assembly process of the bipolar plate 1, the second guide plate 52 is located at the farthest position from the base plate 4. After the assembly is completed, the second base plate 3 is pressed down by hydraulic equipment, and the second base plate 3 will drive the upper end of the lifting frame 56 to move downward, so that the lower end of the driving rod 53 moves downward (with the rotating connection between the driving rod 53 and the fixing rod 57 as the axis), so that the upper end of the driving rod 53 drives the second guide plate 52 to move toward the base plate 4, which can avoid the first guide plate 51 and the second guide plate 52 being close to the bipolar plate 1 and affecting the heat dissipation of the bipolar plate 1 during operation.

[0049] Furthermore, a linkage plate 44 is slidably mounted on the bottom plate 4 , and the linkage plate 44 is slidably connected to the guide rail 45 . A rotation connecting shaft 561 is rotatably mounted on the top of the lifting frame 56 , and the linkage plate 44 is fixedly connected to the rotation connecting shaft 561 .

[0050] Among them, by providing the linkage plate 44, the top of the lifting frame 56 can be driven more stably, and the swinging of the lifting frame 56 during the lifting process can be avoided.

[0051] Furthermore, a spring 571 is fixedly installed on the upper end surface of the fixing rod 57, a cross bar 562 is fixedly installed in the middle of the lifting frame 56, the upper end of the spring 571 is connected to the cross bar 562, and the spring 571 is used to drive the lifting frame 56 to move upward.

[0052] Among them, by fixing the spring 571 above the fixing rod 57, in the normal state (before assembly is completed), the lifting frame 56 is located at a high point and will not drive the first guide plate 51 and the second guide plate 52 to slide left and right, so that the vertical plane formed by the first guide plate 51 and the second guide plate 52 can stably support the side of the bipolar plate 1.

[0053] Furthermore, a bending plate 521 is fixedly installed on the same side of the first guide plate 51 and the second guide plate 52, and the bending plate 521 is used to dock with the docking plate 411. After the first guide plate 51 moves downward, the two bending plates 521 on the first guide plate 51 and the second guide plate 52 are tightly connected to each other.

[0054] Among them, by setting a bending plate 521 on the first guide plate 51 and the second guide plate 52, after the first guide plate 51 and the second guide plate 52 slide toward the bottom plate 4 (after assembly is completed), the first guide plate 51 and the second guide plate 52 can be docked with the docking plate 411 through the bending plate 521, and a heat dissipation channel for rapid airflow is formed between the first guide plate 51 and the second guide plate 52 and the multiple groups of bipolar plates 1, thereby avoiding heat accumulation near the bipolar plates 1.

[0055] Furthermore, a mounting plate 42 for connecting to an external plane is fixedly installed on the end surface of the bottom plate 4 away from the bipolar plate 1, so that the bipolar plate 1 can be installed and fixed more conveniently. Side plates 43 are fixedly installed on both ends of the bottom plate 4 facing the end surface of the bipolar plate 1, and the side plates 43 are used to guide the second substrate 3 to slide toward the first substrate 2.

[0056] Furthermore, a plurality of support plates 21 are fixedly mounted on the end surface of the first substrate 2 away from the bipolar plate 1. The support plates 21 are used to support the first substrate 2 during the assembly of the plurality of bipolar plates 1. During the assembly of the bipolar plates 1, a gap is left between the first substrate 2 and the placement table by setting the support plates 21, which makes it more convenient to install the mounting bolts.

[0057] Working principle: During the stacking and assembly process of the bipolar plate 1, the first substrate 2 is first placed downward on the mounting table (such as Figure 3), then place multiple bipolar plates 1 close to the adjustment assembly 5 downward, so that the multiple bipolar plates 1 are aligned with each other (stack the bipolar plates 1 one by one, with one side of the bipolar plate 1 close to the vertical plane formed by the adjustment assembly 5, using the same reference), then cover the second substrate 3 on the stacked bipolar plates 1 and use hydraulic equipment to press on the second substrate 3, so that the various bipolar plates 1 are tightly connected together, and then fix them by installing bolts that pass through the second substrate 3, the bipolar plate 1 and the first substrate 2 in sequence;

[0058] After the stacking and assembly of the bipolar plates 1 is completed, the lifting frame 56 is driven downward by the pressure of the hydraulic equipment (without adding a driving source), so that the first guide plate 51 and the second guide plate 52 slide toward the bottom plate 4, and the first guide plate 51 and the second guide plate 52 are docked with the docking plate 411 through the bending plate 521, and a heat dissipation channel for rapid air flow is formed between the first guide plate 51 and the second guide plate 52 and the multiple groups of bipolar plates 1, thereby avoiding heat accumulation near the bipolar plates 1.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bipolar plate assembly for a liquid flow battery, characterized in that: include: A first substrate (2) and a second substrate (3), wherein a plurality of groups of bipolar plates (1) are clamped and mounted between the first substrate (2) and the second substrate (3), and a plurality of mounting bolts are tightened and mounted on the first substrate (2) and the second substrate (3); A bottom plate (4) is fixedly mounted on the side surfaces of the first substrate (2) and the second substrate (3); a heat dissipation fan (41) for extracting air between the bottom plate (4) and the bipolar plate (1) is fixedly mounted on one end of the bottom plate (4) away from the bipolar plate (1); and an adjustment component (5) for assisting alignment during the alignment and installation of multiple groups of bipolar plates (1) is arranged on the end surface of the bottom plate (4) facing the bipolar plate (1); The regulating assembly (5) is used to guide the airflow outside the bipolar plate (1) into the interior of the heat dissipation fan (41) after the bipolar plate (1) is installed.

2. A liquid flow battery bipolar plate assembly according to claim 1, characterized in that: The adjustment components (5) have two groups and are symmetrically mounted on both sides of the base plate (4); the heat dissipation fan (41) is embedded in the base plate (4); and a docking plate (411) is fixedly mounted on the outer side of the heat dissipation fan (41).

3. A liquid flow battery bipolar plate assembly according to claim 2, characterized in that: Each group of adjustment components (5) comprises a first guide plate (51) and a second guide plate (52) which are distributed up and down. The first guide plate (51) is slidably mounted on the first base plate (2). An extension plate is arranged at an interval on one end of the first guide plate (51) facing the second guide plate (52). A sliding groove for the extension plate to slide into is arranged on the second guide plate (52). A fixed plate (55) is fixedly mounted on the end surfaces of the first guide plate (51) and the second guide plate (52) facing the bottom plate (4). An elastic member (54) is fixedly mounted between the two fixed plates (55) on the first guide plate (51) and the second guide plate (52). The elastic member (54) is used to drive the first guide plate (51) to move upward.

4. A liquid flow battery bipolar plate assembly according to claim 3, characterized in that: A plurality of guide rails (45) are fixedly mounted on the end surface of the bottom plate (4) facing the bipolar plate (1), a slide groove (301) for fitting on the outside of the guide rail (45) is provided on the second base plate (3), and a bolt mounting hole (302) for allowing mounting bolts to pass through is provided on the second base plate (3).

5. A liquid flow battery bipolar plate assembly according to claim 4, characterized in that: A fixing rod (57) is fixedly mounted in the middle of the bottom plate (4); a driving rod (53) is rotatably mounted on the end surface of the fixing rod (57) away from the bottom plate (4); a middle portion of the driving rod (53) is rotatably connected to the fixing rod (57); an upper end of the driving rod (53) is slidably and rotatably connected to the second guide plate (52) in an up-and-down manner; a lifting frame (56) is rotatably mounted on the lower end of the driving rod (53); and the lifting frame (56) is used to adjust the distance between the first guide plate (51) and the second guide plate (52) and the bottom plate (4) up and down.

6. A liquid flow battery bipolar plate assembly according to claim 5, characterized in that: A linkage plate (44) is slidably mounted on the bottom plate (4), and the linkage plate (44) is slidably connected to the guide rail (45). A rotating connecting shaft (561) is rotatably mounted on the top of the lifting frame (56), and the linkage plate (44) is fixedly connected to the rotating connecting shaft (561).

7. A liquid flow battery bipolar plate assembly according to claim 6, characterized in that: A spring (571) is fixedly mounted on the upper end surface of the fixing rod (57), a cross bar (562) is fixedly mounted on the middle portion of the lifting frame (56), the upper end of the spring (571) is connected to the cross bar (562), and the spring (571) is used to drive the lifting frame (56) to move upward.

8. A liquid flow battery bipolar plate assembly according to claim 7, characterized in that: A bending plate (521) is fixedly mounted on the same side of the first guide plate (51) and the second guide plate (52), and the bending plate (521) is used to dock with the docking plate (411). After the first guide plate (51) moves downward, the two bending plates (521) on the first guide plate (51) and the second guide plate (52) are tightly connected to each other.

9. A liquid flow battery bipolar plate assembly according to claim 8, characterized in that: A mounting plate (42) for connecting to an external plane is fixedly mounted on the end surface of the bottom plate (4) away from the bipolar plate (1), and side plates (43) are fixedly mounted on both ends of the end surface of the bottom plate (4) facing the bipolar plate (1), and the side plates (43) are used to guide the second substrate (3) to slide toward the first substrate (2).

10. A liquid flow battery bipolar plate assembly according to claim 9, characterized in that: A plurality of groups of support plates (21) are fixedly mounted on the end surface of the first substrate (2) away from the bipolar plate (1), and the support plates (21) are used to support the first substrate (2) during the assembly process of the plurality of bipolar plates (1).

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