Chemical deposition production line for metal polar plate of fuel cell
By designing a continuous production line and using a straightening cover plate, the problems of uneven coating and applicability of fixing devices were solved, achieving high-quality and uniform production of fuel cell metal plates.
Patent Information
- Application Number
- CN202520390791.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In existing fuel cell metal electrode plate manufacturing processes, the uneven thickness of the protective coating and the applicability of the fixing device to thin plates lead to inconsistent metal electrode plate quality.
A continuous production line including an unwinding roller, a cleaning cylinder, a pre-drying chamber, a chemical deposition chamber, and a post-drying chamber was designed. The long strip equipment and straightening cover plate are used to ensure the uniformity of the coating on the metal sheet during the chemical deposition process and avoid batch differences.
This improved the uniformity of the metal electrode coating, avoiding uneven coating caused by multi-point clamping of the fixing device, and enhancing the consistency of product quality.
Smart Images
Figure CN223951177U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fuel cell production, and more particularly, to a fuel cell metal plate chemical deposition production line. BACKGROUND
[0002] Metal plate as the important component of fuel cell, plays an important role in fuel cell quality, how to make high quality, quality uniform fuel cell metal plate becomes the pursuit of the industry.
[0003] The raw material of fuel cell metal plate is metal plate, which can be stainless steel, titanium alloy, aluminum alloy, nickel alloy, copper alloy, etc. The existing manufacturing process is to stamp, laser cut, plate protective layer, etch, weld and surface treat the metal plate to form a fuel cell metal plate.
[0004] In the process of plating the protective layer, the existing manufacturing process arranges the cut metal sheets one by one in the plating solution cylinder through the fixing device for a certain period of time and then takes out the batch from the plating solution cylinder. In each batch, the position of each metal sheet in the plating solution cylinder is different. Because the concentration of the plating solution cylinder is different at different positions in the cylinder, if electroplating, there is also a different current distribution, resulting in uneven thickness of the plating layer of different batches, or even different metal sheets in the same batch, thereby causing different quality of the subsequent metal plate. Moreover, because the thickness of the fuel cell metal plate is usually 0.1-0.3mm, the fixing device needs to be clamped at multiple points to vertically hang the metal sheet, otherwise it is easy to curl, so the requirement for the fixing device is also high. The ordinary fixing device for clamping thick plates is not suitable, and multi-point clamping seriously affects the plating effect.
[0005] Therefore, how to find a chemical deposition or electroplating production line suitable for continuous production of fuel cell metal plates has become the demand of the industry. UTILITY MODEL CONTENTS
[0006] In view of the above problems, the utility model provides a fuel cell metal plate chemical deposition production line, which aims to improve at least one problem mentioned in the background art.
[0007] A fuel cell metal plate chemical deposition production line, the fuel cell metal plate chemical deposition production line includes a pay-off roll, a cleaning cylinder, a front drying box, a chemical deposition cylinder, a rear drying box and a winding roll, the cleaning cylinder, the front drying box, the chemical deposition cylinder and the rear drying box are arranged in sequence in the diameter of the pay-off roll and the winding roll, and the metal coil is conveyed from the pay-off roll to the winding roll through the conveying roll and the deflection roll.
[0008] Optionally, the cleaning tank, the front drying box, the chemical deposition tank and the rear drying box are long strips, and the width of the cleaning tank, the front drying box, the chemical deposition tank and the rear drying box is greater than the width of the metal coil.
[0009] Optionally, the front drying box or the rear drying box is respectively provided with a drying heat circulation system, the drying heat circulation system comprises an air exhaust pipe, a blower and an air supply pipe, the blower is connected with the air exhaust pipe and the air supply pipe respectively, one end of the air supply pipe is located at the bottom of the rear part of the cavity of the front drying box or the rear drying box, the other end of the air exhaust pipe is located at the top of the front part of the cavity of the front drying box or the rear drying box, the first heat exchanger and the second heat exchanger are arranged on the air exhaust pipe, the first heat exchanger is used for condensing the liquid in the air exhaust pipe, and the second heat exchanger is used for heating the air after the liquid is removed.
[0010] Optionally, the air exhaust pipe comprises an air exhaust pipe front section, a first horizontal section, a U-shaped section and a second horizontal section, the second heat exchanger is arranged on the second horizontal section, the U-shaped section is located between the first horizontal section and the second horizontal section, the first horizontal section and the second horizontal section are at the same height, one end of the air exhaust pipe front section is located at the top of the front part of the cavity of the front drying box or the rear drying box, the other end of the air exhaust pipe front section is connected with the first horizontal section and extends out of the top of the front drying box or the rear drying box, and the front part of the first horizontal section is arranged on the top of the front drying box or the rear drying box.
[0011] Optionally, the first heat exchanger is arranged on the vertical section of the U-shaped section which is connected with the second horizontal section.
[0012] Optionally, the first heat exchanger is a double-pipe heat exchanger, and the second heat exchanger is a double-pipe heat exchanger.
[0013] Optionally, the top of the cylinder body of the chemical deposition tank is covered with a plurality of correction cover plates, the plurality of correction cover plates are arranged along the length direction of the chemical deposition tank, and each correction cover plate is located above the adjacent two groups of conveying rollers below the liquid level of the chemical deposition tank.
[0014] Optionally, the correction cover plate comprises a cover plate, two rows of correction strips are arranged on the lower surface of the cover plate, the center lines of the two rows of correction strips coincide with the center line of the metal coil, the distance between the two rows of correction strips is matched with the distance of the metal coil, and the distance between the first correction strip and the last correction strip of each row of correction strips is matched with the nearest distance between the adjacent two groups of conveying rollers below the liquid level of the chemical deposition tank.
[0015] Compared with the prior art, the utility model has the advantages that:
[0016] The utility model discloses a long strip cleaning tank, a long strip drying box and a long strip deposition tank are arranged, the metal plate material after stamping treatment is not cut and is plated with a protective layer metal when passing through the long strip deposition tank, and the uniformity of the plating layer can be improved under the condition that the plating solution is unchanged. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of a chemical deposition production line for metal electrode plates of fuel cells according to this utility model;
[0019] Figure 2 This is a schematic diagram of the drying heat circulation system of this utility model;
[0020] Figure 3 This is a top view structural schematic diagram of the chemical deposition tank of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the chemical deposition tank of this utility model for removing the correction cover plate;
[0022] Figure 5 This is a schematic diagram of the corrective cover plate structure of this utility model.
[0023] Explanation of reference numerals in the attached drawings: 1. Unwinding roller, 2. Rewinding roller, 3. Cleaning cylinder, 4. Front drying chamber, 5. Chemical deposition chamber, 51. Straightening cover plate, 52. Cover plate, 53. Straightening strip, 6. Rear drying chamber, 7. Metal coil, 8. Drying heat circulation system, 81. Exhaust duct, 82. Blower, 83. Air supply duct, 84. First heat exchanger, 85. Second heat exchanger, 86. First horizontal section, 87. U-shaped section, 88. Second horizontal section, 89. Front section of exhaust duct, 80. Liquid discharge pipe. Detailed Implementation
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise specified.
[0026] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] The technical scheme of the utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.
[0029] Please refer to Figures 1-5 , Figure 1 is a schematic diagram of the overall structure of a fuel cell metal pole chemical deposition production line of the utility model, Figure 2 is a schematic diagram of the structure of the drying heat cycle system of the utility model, Figure 3 is a schematic diagram of the structure of the chemical deposition cylinder of the utility model from the top, Figure 4 is a schematic diagram of the structure of the chemical deposition cylinder without the correction cover plate of the utility model, Figure 5 is a schematic diagram of the structure of the correction cover plate of the utility model.
[0030] A fuel cell metal pole chemical deposition production line, comprising a unwinding roller 1, a cleaning cylinder 3, a front drying box 4, a chemical deposition cylinder 5, a rear drying box 6 and a winding roller 2, the cleaning cylinder 3, the front drying box 4, the chemical deposition cylinder 5 and the rear drying box 6 are sequentially arranged in the diameter of the unwinding roller 1 and the winding roller 2, and the metal coil 7 is conveyed from the unwinding roller 1 to the winding roller 2 through conveying rollers and turning rollers.
[0031] The metal coil 7 is a metal material that is not subjected to laser cutting after being stamped and formed from a metal plate.
[0032] For the thickness of the fuel cell metal pole is usually 0.1-0.3mm, through the unwinding roller 1, the cleaning cylinder 3, the front drying box 4, the chemical deposition cylinder 5, the rear drying box 6 and the winding roller 2, a continuous operation mode is realized, and the product of the winding roller 2 is better than the existing product in plating layer uniformity because batch difference and difference in the chemical deposition cylinder 5 are avoided.
[0033] Further, the cleaning cylinder 3, the front drying box 4, the chemical deposition cylinder 5 and the rear drying box 6 are long strips, and the width of the cleaning cylinder 3, the front drying box 4, the chemical deposition cylinder 5 and the rear drying box 6 is greater than the width of the metal coil 7.
[0034] In one or more specific embodiments of the present application, the front drying box 4 or the rear drying box 6 is respectively provided with a drying heat circulation system 8, the drying heat circulation system 8 comprises an air exhaust pipe 81, a blower 82 and an air supply pipe 83, the blower 82 is connected with the air exhaust pipe 81 and the air supply pipe 83 respectively, one end of the air supply pipe 83 is located at the bottom position of the rear part of the cavity of the front drying box 4 or the rear drying box 6, the other end of the air exhaust pipe 81 is located at the top position of the front part of the cavity of the front drying box 4 or the rear drying box 6, the first heat exchanger 84 and the second heat exchanger 85 are installed on the air exhaust pipe 81, the first heat exchanger 84 is used for condensing the liquid in the air exhaust pipe 81, and the second heat exchanger 85 is used for heating the air after removing the liquid.
[0035] In one or more specific embodiments of the utility model, the air exhaust pipe 81 includes an air exhaust pipe front section 89, a first horizontal section 86, a U-shaped section 87 and a second horizontal section 88, the second heat exchanger 85 is installed on the second horizontal section 88, the U-shaped section 87 is located between the first horizontal section 86 and the second horizontal section 88, the first horizontal section 86 and the second horizontal section 88 are at the same height, one end of the air exhaust pipe front section 89 is located at the top position of the front part of the cavity of the front drying box 4 or the rear drying box 6, the other end extends out of the top of the front drying box 4 or the rear drying box 6 and is connected with the first horizontal section 86, the front part of the first horizontal section 86 is installed on the top of the front drying box 4 or the rear drying box 6, the second heat exchanger 85 can be in the form of a sleeve, the second horizontal section 88 passes through the second heat exchanger 85, and the high-temperature steam heats the gas in the second horizontal section 88. The U-shaped section 87 is arranged to prevent the liquid in the air exhaust pipe 81 from flowing back to the front drying box 4 or the rear drying box 6, thereby affecting the drying effect and ultimately affecting the product quality.
[0036] In one or more specific embodiments of the utility model, the first heat exchanger 84 is installed on the vertical section of the U-shaped section 87 connected with the second horizontal section 88, the first heat exchanger 84 can adopt the form of a sleeve, and the air exhaust pipe 81 passes through the first heat exchanger 84. The cold liquid cools the U-shaped section 87, and the liquid generated in the U-shaped section 87 flows back to the bottom of the U-shaped section 87. The height of the vertical section of the U-shaped section 87 and the length of the horizontal section of the U-shaped section 87 and other specific parameters can be selected according to actual needs in the art as long as the purpose of the utility model is achieved.
[0037] In one or more specific embodiments of the utility model, the horizontal section of the U-shaped section 87 is connected with a normally closed liquid drain pipe 80. When there is too much liquid in the liquid drain pipe 80, the valve of the normally closed liquid drain pipe 80 is opened to drain the liquid.
[0038] In one or more specific embodiments of the utility model, the cylinder body of the chemical deposition cylinder 5 is covered with a plurality of correction cover plates 51, the plurality of correction cover plates 51 are arranged along the length direction of the chemical deposition cylinder 5, and each correction cover plate 51 is located above the upper part of the adjacent two groups of conveying rollers below the liquid level of the chemical deposition cylinder 5. The correction cover plate 51 is used to prevent the liquid of the chemical deposition cylinder 5 from emitting odor and affecting the air environment. More importantly, it prevents the metal coil 7 from deviating and causing the deposition time to be inconsistent with the set time and the set position and the plating solution concentration to be inconsistent, thereby causing the plating layer quality to not meet the requirements.
[0039] In one or more specific embodiments of the utility model, the correction cover plate 51 comprises a cover plate 52, two rows of correction strips 53 are arranged on the lower surface of the cover plate 52, the center lines of the two rows of correction strips 53 coincide with the running center line of the metal coiled material 7, the distance between the two rows of correction strips 53 is matched with the distance of the metal coiled material 7, and the distance between the first correction strip 53 and the last correction strip 53 of each row of correction strips 53 is matched with the nearest distance between the adjacent two groups of conveying rollers under the liquid level of the chemical deposition cylinder 5. The purpose of arranging the correction strips 53 instead of the correction plate is to reduce the influence on the metal coiled material 7 and the deposition liquid or the electroplating liquid as much as possible, so as to avoid affecting the plating effect.
[0040] In one or more specific embodiments of the utility model, in order to facilitate taking and placing the correction cover plate 51, a handle is arranged on the upper surface of the cover plate 52.
[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A fuel cell metal bipolar plate electroless deposition production line, characterized by, The fuel cell metal plate chemical deposition production line comprises an unwinding roller (1), a cleaning tank (3), a front drying box (4), a chemical deposition tank (5), a rear drying box (6) and a winding roller (2), the cleaning tank (3), the front drying box (4), the chemical deposition tank (5) and the rear drying box (6) are sequentially arranged in the diameter of the unwinding roller (1) and the winding roller (2), and the metal coil (7) is conveyed from the unwinding roller (1) to the winding roller (2) through conveying rollers and turning rollers.
2. The fuel cell metal former electroless deposition production line of claim 1, wherein, The cleaning tank (3), the front drying box (4), the chemical deposition tank (5) and the rear drying box (6) are all long strips, and the width of the cleaning tank (3), the front drying box (4), the chemical deposition tank (5) and the rear drying box (6) is greater than the width of the metal coil (7).
3. The fuel cell metal former electroless deposition production line of claim 1, wherein, The front drying box (4) or the rear drying box (6) is respectively provided with a drying heat circulation system (8), the drying heat circulation system (8) comprises an air exhaust pipe (81), a blower (82) and an air supply pipe (83), the blower (82) is connected with the air exhaust pipe (81) and the air supply pipe (83) respectively, one end of the air supply pipe (83) is located at the bottom of the rear part of the cavity of the front drying box (4) or the rear drying box (6), the other end of the air exhaust pipe (81) is located at the top of the front part of the cavity of the front drying box (4) or the rear drying box (6), the air exhaust pipe (81) is provided with a first heat exchanger (84) and a second heat exchanger (85), the first heat exchanger (84) is used for condensing liquid in the air exhaust pipe (81), and the second heat exchanger (85) is used for heating air after the liquid is removed.
4. The fuel cell metal former electroless deposition production line of claim 3, wherein, The air exhaust pipe (81) comprises an air exhaust pipe front section (89), a first horizontal section (86), a U-shaped section (87) and a second horizontal section (88), the second heat exchanger (85) is arranged on the second horizontal section (88), the U-shaped section (87) is located between the first horizontal section (86) and the second horizontal section (88), the first horizontal section (86) and the second horizontal section (88) are at the same height, one end of the air exhaust pipe front section (89) is located at the top of the front part of the cavity of the front drying box (4) or the rear drying box (6), the other end of the air exhaust pipe front section (89) extends out of the top of the front drying box (4) or the rear drying box (6) and is connected with the first horizontal section (86), and the front part of the first horizontal section (86) is arranged on the top of the front drying box (4) or the rear drying box (6).
5. The fuel cell metal former electroless deposition production line of claim 4, wherein, The first heat exchanger (84) is arranged on the vertical section of the U-shaped section (87) connected with the second horizontal section (88).
6. The fuel cell metal former electroless deposition production line of claim 5, wherein, The first heat exchanger (84) is a jacketed heat exchanger, and the second heat exchanger (85) is a jacketed heat exchanger.
7. The fuel cell metal former electroless deposition production line of claim 4, wherein, A normally closed liquid drain pipe (80) is connected to the horizontal section of the U-shaped section (87).
8. The fuel cell metal former electroless deposition production line of claim 4, wherein, The top of the tank body of the chemical deposition tank (5) is covered with a plurality of correction cover plates (51), the plurality of correction cover plates (51) are arranged along the length direction of the chemical deposition tank (5), and each correction cover plate (51) is located above the conveying rollers of two adjacent groups below the liquid level of the chemical deposition tank (5).
9. The fuel cell metal former electroless deposition production line of claim 8, wherein, The said rectifying cover plate (51) comprises a cover plate (52), the lower surface of which is provided with two rows of rectifying strips (53), the center lines of which coincide with the running center line of the metal coiled material (7), the distance between the two rows of rectifying strips (53) matches the distance of the metal coiled material (7), and the distance between the first rectifying strip (53) and the last rectifying strip (53) of each row matches the nearest distance between the adjacent two groups of conveying rollers under the liquid level of the chemical deposition cylinder (5).