Bipolar sealing ring attaching device

Abstract

The invention provides a bipolar sealing ring attaching device which comprises a placing piece, and a sealing ring and a bipolar plate are sequentially placed upwards in the vertical direction. The device also comprises a movable part, and the placing part is located in the movable part. The pressing plate is placed above the movable part, the movable part slides downwards in the vertical direction to press the bipolar plate under the gravity action of the pressing plate, the pressing plate comprises a groove, the groove is formed in the end facing the bipolar plate and is connected with the bipolar plate in an attached mode during attachment, the depth of the groove is marked as X1, and the depth of the groove is marked as X2. The height of the bipolar plate is marked as X2, the height of the sealing ring is marked as X3, and the formula that X1 is larger than the sum of X2 and X3 is met. Through the structure, operation steps are simplified.

Description

Technical Field

[0001] The present application relates to the field of proton exchange membrane fuel cells, and in particular to a bipolar sealing ring attachment device. Background Art

[0002] Bipolar plates are widely used in the proton exchange membrane fuel cell industry, and sealing strips are usually used to seal bipolar plates. At present, there are two main ways to match bipolar plate sealants with bipolar plates: assembly after glue curing and sealant molding and bonding. These two assembly methods cannot guarantee the relative position of the sealant and the sealing groove during the assembly process, so that during the stacking process of bipolar plates, sealing failure caused by misalignment of the sealant strips and cracking of the bipolar plates are prone to occur.

[0003] In the prior art, such as Chinese patent CN202222113747.0, a bipolar plate sealing ring bonding device is proposed. In this technology, components such as a base, a panel, a guide positioning pin and a block are provided. However, the disadvantage of this patent is that the structure is too complicated, and the handle needs to be frequently moved to maintain the relative position between the sealing ring and the plate. In addition, there is a limit rod in the sealing groove for placing the sealant, and the limit rod is easy to cause partial rupture of the sealing ring during the pressing process. Therefore, a bipolar sealing ring bonding device is needed. Summary of the invention

[0004] In view of this, it is necessary to provide a bipolar sealing ring attaching device that simplifies operation and reduces damage to solve the above problems.

[0005] The embodiment of the present application provides a bipolar sealing ring attaching device, a placing piece, and a sealing ring and a bipolar plate are placed in sequence upward in a vertical direction;

[0006] A movable part, wherein the placement part is located inside the movable part;

[0007] A pressing plate is placed above the movable member. Under the gravity of the pressing plate, the movable member slides downward in the vertical direction to press the bipolar plate. The pressing plate includes:

[0008] The groove is opened at one end facing the bipolar plate and is connected to the bipolar plate when attached, wherein the depth of the groove is recorded as X1, the height of the bipolar plate is recorded as X2, and the height of the sealing ring is recorded as X3, satisfying the formula:

[0009] X1>X2+X3.

[0010] In at least one embodiment of the present application, when viewed in the vertical direction, the groove, the sealing ring and the bipolar plate overlap;

[0011] When viewed in the vertical direction, the movable member and the pressure plate overlap.

[0012] In at least one embodiment of the present application, the groove comprises:

[0013] A bonding surface, facing one end of the bipolar plate, and being bonded to a side of the bipolar plate away from the sealing ring during bonding;

[0014] The area of ​​the bonding surface is recorded as S1, and the area of ​​the side of the placement piece facing the bonding surface is recorded as S2, satisfying the formula:

[0015] S1>S2.

[0016] In at least one embodiment of the present application, the bipolar sealing ring attachment device further comprises:

[0017] A base is arranged in a vertical direction;

[0018] The support member is arranged in a vertical direction, and one end of the support member is fixedly connected to the base, and the other end of the support member is fixedly connected to the placement member.

[0019] In at least one embodiment of the present application, the bipolar sealing ring attachment device further comprises:

[0020] An elastic member is arranged in a vertical direction, one end of which is connected to the base, and the other end of which is connected to the movable member, and expands and contracts under the action of gravity;

[0021] The limiting member is arranged in the vertical direction, and one end of the limiting member is connected to the base, and the other end of the limiting member is connected to the movable member when attached. The limiting member is located in the elastic member.

[0022] In at least one embodiment of the present application, the height difference between the movable member and the supporting member after sliding downward in the vertical direction is recorded as X4, which satisfies the formula:

[0023] X1<X2+X3+X4.

[0024] In at least one embodiment of the present application, the bipolar sealing ring attachment device further comprises:

[0025] The guide member is arranged in the vertical direction, one end of which is connected to the base, and the other end of which is connected to the movable member, and slides downward in the vertical direction under the action of gravity.

[0026] In at least one embodiment of the present application, when viewed in the vertical direction, the elastic members are respectively disposed at both ends of the width of the movable member, and two or more elastic members are equidistantly distributed along the length of the movable member;

[0027] When viewed in the vertical direction, a guide member is provided at the midpoint of the width of the movable member.

[0028] In at least one embodiment of the present application, the guide member comprises:

[0029] A guide rod, arranged in a vertical direction and fixedly connected to the base;

[0030] The linear bearing is arranged along the vertical direction, one end of which is fixedly connected to the movable part, and the other end of which is slidably connected to the guide rod.

[0031] In at least one embodiment of the present application, the placement piece includes:

[0032] The placement groove is opened at one end of the placement piece away from the base, is located in the placement piece, and is placed on the sealing ring and the bipolar plate.

[0033] The bipolar sealing ring attaching device provided above places the sealing ring and the bipolar plate on the placing member in sequence, and uses the gravity of the movable member and the pressing plate to automatically press the sealing ring and the bipolar plate. A groove that fits the bipolar plate is also designed, which simplifies the operation steps and ensures the accuracy of the relative position of the sealing ring and the bipolar plate.

[0034] At the same time, the depth of the platen groove, the area of ​​the groove fitting surface and the platen are limited by the limiter to ensure the relative position of the platen, the bipolar plate and the sealing ring placement block;

[0035] Furthermore, the movable part slides downward in the vertical direction under the action of gravity and compresses the elastic part. A linear bearing is used to ensure that the compression direction of the elastic part is vertically downward without tilting. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional diagram of the bipolar sealing ring attachment device described in the present application;

[0037] Figure 2 This is a cross-sectional view of the bipolar sealing ring attachment device described in this application;

[0038] Figure 3 A schematic diagram of the bipolar plate described in the present application being located on a placement piece;

[0039] Figure 4 A three-dimensional view and a top view of the pressing plate described in this application;

[0040] Figure 5 A schematic diagram of the position of the bipolar plate attached to the sealing ring described in this application;

[0041] Main component symbols

[0042] 100, bipolar sealing ring attachment device; 10, placement member; 11, sealing ring; 12, bipolar plate; 13, placement groove; 20, movable member; 30, pressure plate; 31, groove; 311, fitting surface; 40, base; 50, support member; 60, elastic member; 70, limit member; 80, guide member; 81, guide rod; 82, linear bearing; F1, vertical direction upward; F2, vertical direction downward. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0044] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0045] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] See also Figure 1-Figure 5 , an embodiment of the present application provides a bipolar sealing ring attaching device 100, comprising: a placement member 10, a movable member 20 and a pressure plate 30. The placement member 10 sequentially places a sealing ring 11 and a bipolar plate 12 along the vertical direction upward F1. The placement member 10 is located inside the movable member 20. The pressure plate 30 is placed above the movable member 20, and under the action of the gravity of the pressure plate 30, the movable member 20 slides downward along the vertical direction F2 to press the bipolar plate 12. The pressure plate 30 includes a groove 31, which is opened at one end facing the bipolar plate 12, and is fitted and connected with the bipolar plate 12 when attached, wherein the depth of the groove 31 is recorded as X1, the height of the bipolar plate 12 is recorded as X2, and the height of the sealing ring 11 is recorded as X3, satisfying the formula:

[0047] X1>X2+X3.

[0048] Before the specific description, it should be noted that: the side of the bipolar plate 12 that contacts the sealing ring 11 is pre-coated with glue and then pressed against the sealing ring 11 , and both sides of the bipolar plate 12 are pressed against the sealing ring 11 .

[0049] Specifically, the placement member 10 is the basic part of the device, and its shape is a rectangular or square flat plate, and the material can be selected from high-strength, corrosion-resistant metal or plastic. The upper surface of the placement member 10 is provided with a placement groove 13 that matches the shape of the sealing ring 11 and the bipolar plate 12 to ensure that the sealing ring 11 and the bipolar plate 12 can be stably placed and accurately positioned. The depth of the placement groove 13 is slightly smaller than the total thickness of the sealing ring 11 and the bipolar plate 12, so as to generate sufficient extrusion force during the pressing process.

[0050] The movable member 20 is a frame structure, and its internal space is sufficient to accommodate the placement member 10, the sealing ring 11 and the bipolar plate 12. A sliding track is provided at the bottom of the movable member 20. The sliding track is designed along the vertical direction to ensure that during operation, the placement member 10 and the sealing ring 11 and the bipolar plate 12 thereon maintain the same relative position in the vertical direction.

[0051] The pressing plate 30 is one of the key components of the device. It is in the shape of a rectangular flat plate, and the material must also have high strength and corrosion resistance. A groove 31 is provided on the lower surface of the pressing plate 30. The depth X1 of the groove 31 is greater than the sum of the height X2 of the bipolar plate 12 and the height X3 of the sealing ring 11 to ensure that the pressing plate 30 can completely cover and press the bipolar plate 12 and the sealing ring 11. The fitting surface 311 of the groove 31 is designed with an anti-slip texture or coating to increase the friction between the bipolar plate 12 and the bipolar plate 12 to prevent slippage during the pressing process.

[0052] The elastic member 60 is a spring, which is disposed between the base 40 and the movable member 20 in the vertical direction. When the pressure plate 30 is subjected to gravity, the elastic member 60 is compressed and generates a rebound force, which helps to achieve a smooth pressing process. The limiter 70 is a limiter pin, which is disposed on the base 40 and can be adjusted in height, and is used to limit the sliding distance of the movable member 20 to prevent damage caused by excessive compression.

[0053] The guide member 80 includes a guide rod 81 and a linear bearing 82. The guide rod 81 is vertically arranged on the base 40 and fixedly connected to the base 40; the linear bearing 82 is fixed on the movable member 20 and slidably connected to the guide rod 81. The function of the guide member 80 is to ensure that the sliding track of the movable member 20 in the vertical direction is stable and does not deviate, thereby improving the accuracy and reliability of the clamping.

[0054] The pressing plate 30 is placed above the movable member 20. Under the action of gravity, the pressing plate 30 pushes the movable member 20 to slide downward in the vertical direction F2 until the bipolar plate 12 is pressed. The gravity of the pressing plate 30 ensures uniform pressure during the attachment process and avoids the unevenness of the pressure applied manually.

[0055] The groove 31 is formed at one end of the pressing plate 30 facing the bipolar plate 12, and the groove 31 is connected to the bipolar plate 12 when attached. The depth of the groove 31 is recorded as X1, the height of the bipolar plate 12 is recorded as X2, and the height of the sealing ring 11 is recorded as X3, satisfying the formula X1>X2+X3. This design ensures that during the pressing process, the sealing ring 11 is evenly pressed into the sealing groove without being overly compressed or damaged.

[0056] The depth and area design of the groove 31 ensure that during the pressing process, the relative position of the bipolar plate 12 and the sealing ring 11 is accurate and fits tightly, thereby preventing the misalignment of the sealing ring 11 and the rupture of the bipolar plate 12 .

[0057] Place the placement piece 10 into the movable piece 20, and ensure that the placement piece 10 is firmly located inside the movable piece 20. Then place the sealing ring 11 on the placement piece 10 in turn, and then place the bipolar plate 12 on the sealing ring 11, and ensure that the two are aligned on the placement piece 10. Then, place the pressing plate 30 above the movable piece 20, and slide the pressing plate 30 downward by gravity. The groove 31 on the pressing plate 30 fits with the bipolar plate 12, and the sealing ring 11 is evenly pressed into the sealing groove of the bipolar plate 12 by evenly applying pressure. Finally, the pressing plate 30 slides to the bottom, the movable piece 20 stops sliding, and the sealing ring 11 is precisely pressed between the bipolar plates 12. Remove the pressing plate 30 and the movable piece 20 to complete the attachment of the sealing ring 11 to the bipolar plate 12.

[0058] In a specific embodiment, when viewed in the vertical direction, the groove 31, the sealing ring 11 and the bipolar plate 12 overlap. When viewed in the vertical direction, the movable member 20 and the pressure plate 30 overlap.

[0059] Specifically, the shape of the groove 31 of the pressing plate 30 matches the upper surface of the bipolar plate 12, ensuring that the bipolar plate 12 can be completely covered and closely fitted during the pressing process. The depth X1 of the groove 31 is greater than the sum of the height X2 of the bipolar plate 12 and the height X3 of the sealing ring 11, providing a certain amount of compression for the sealing ring 11 to ensure the sealing effect.

[0060] Before assembly, the sealing ring 11 is precisely placed in the placement groove 13 of the placement member 10, with its top flush with or slightly lower than the top of the placement groove 13. Subsequently, the bipolar plate 12 is placed on the sealing ring 11, ensuring that the sealing ring 11 is located between the bipolar plate 12 and the placement groove 13.

[0061] When the pressing plate 30 slides downward under the action of gravity and presses the bipolar plate 12, the groove 31, the sealing ring 11 and the bipolar plate 12 form an overlapping relationship in the vertical direction. This overlap not only ensures that the sealing ring 11 is evenly compressed between the bipolar plate 12 and the placement groove 13, but also prevents the sealing ring 11 from slipping or twisting during the pressing process, thereby improving the reliability and stability of the seal.

[0062] The movable part 20 is a frame structure, and its internal space is sufficient to accommodate the placement part 10, the sealing ring 11 and the bipolar plate 12. The top of the movable part 20 is designed with a contact surface matching the pressure plate 30 to ensure that the pressure plate 30 can be stably placed on the movable part 20 and slide downward in the vertical direction F2.

[0063] The pressing plate 30 is placed on the top of the movable member 20, and the groove 31 on the lower surface thereof corresponds to the position of the bipolar plate 12 inside the movable member 20. During the pressing process, the pressing plate 30 pushes the movable member 20 to slide downward by its gravity.

[0064] The vertical overlap between the movable member 20 and the pressing plate 30 ensures the stability and consistency of the pressing process. Since there is no room for relative sliding or offset between the movable member 20 and the pressing plate 30, it is possible to ensure that each pressing operation can achieve the same compression amount and sealing effect.

[0065] In a specific embodiment, the groove 31 includes: a fitting surface 311. The fitting surface 311 faces one end of the bipolar plate 12, and when attached, the fitting surface 311 fits with a side of the bipolar plate 12 that is away from the sealing ring 11. The area of ​​the fitting surface 311 is recorded as S1, and the area of ​​a side of the placement member 10 facing the fitting surface 311 is recorded as S2, satisfying the formula:

[0066] S1>S2.

[0067] Specifically, the fitting surface 311 of the groove 31 is an end facing the bipolar plate 12, and is used to fit tightly with the side of the bipolar plate 12 away from the sealing ring 11 during the attachment process. The design of the fitting surface 311 must ensure that it matches the shape and size of the bipolar plate 12 so as to achieve full contact during the pressing process.

[0068] In a specific embodiment, the bipolar sealing ring attaching device 100 further includes: a base 40 and a support member 50. The base 40 is arranged in a vertical direction. The support member 50 is arranged in a vertical direction, one end of the support member 50 is fixedly connected to the base 40, and the other end of the support member 50 is fixedly connected to the placement member 10.

[0069] Specifically, the base 40 is the basic part of the entire attachment device, which is arranged in the vertical direction to provide stable support for the entire device. The base 40 is usually made of a strong and durable material, such as stainless steel or aluminum alloy, to ensure that it can withstand various forces and moments generated during the operation of the device.

[0070] The base 40 not only provides a stable supporting platform for the device, but also reduces the vibration and shaking of the device during operation through its weight and structural design, thereby improving the attachment accuracy and stability.

[0071] The support member 50 is arranged in the vertical direction, with one end fixedly connected to the base 40 and the other end fixedly connected to the placement member 10. The design of the support member 50 needs to consider its rigidity and stability to ensure that it will not deform or loosen when bearing the weight and pressure of the placement member 10, the sealing ring 11 and the bipolar plate 12.

[0072] The main function of the support member 50 is to transfer the stability and rigidity of the base 40 to the placement member 10, ensuring that the placement member 10 can maintain the correct position and posture during the attachment process. At the same time, the support member 50 also plays a certain role in buffering and shock absorption, reducing the impact of vibration caused by external factors on the attachment accuracy.

[0073] In a specific embodiment, the bipolar sealing ring attachment device 100 further includes: an elastic member 60 and a stopper 70. The elastic member 60 is arranged in a vertical direction, one end of the elastic member 60 is connected to the base 40, and the other end is connected to the movable member 20, and the elastic member 60 is extended and retracted under the action of gravity;

[0074] The limiting member 70 is arranged along the vertical direction, one end of the limiting member 70 is connected to the base 40 , and the other end is attached to the movable member 20 . The limiting member 70 is located in the elastic member 60 .

[0075] Specifically, the elastic member 60 is arranged in the vertical direction, one end of which is connected to the base 40, and the other end of which is connected to the movable member 20. The elastic member 60 is usually made of a material with a certain elastic modulus, such as a spring, rubber, etc., so that it can generate telescopic deformation when subjected to external force.

[0076] The elastic member 60 plays a role of buffering and shock absorption during the attachment process. When the pressure plate 30 applies pressure to the bipolar plate 12 and the sealing ring 11 through the movable member 20, the elastic member 60 can absorb part of the impact energy and slow down the movement speed of the movable member 20, thereby avoiding excessive impact on the sealing ring 11 or the bipolar plate 12. At the same time, the elastic member 60 can also automatically adjust its expansion and contraction according to the change of the pressing force to ensure that the pressing force remains constant within a certain range.

[0077] The stopper 70 is arranged in the vertical direction, one end of which is connected to the base 40, and the other end of which is in contact with the movable member 20 when attached. The stopper 70 is usually designed as a rigid structure, such as a metal rod, a stopper pin, etc., to ensure that it can maintain a stable shape and position when subjected to external force.

[0078] The limiter 70 is located inside the elastic member 60 and together with the elastic member 60 restricts the movement range of the movable member 20. The upper end surface of the limiter 70 usually maintains a certain gap with the lower end surface of the movable member 20 so as to contact the movable member 20 when it moves to the preset position and restrict its further movement.

[0079] The main function of the limiter 70 is to limit the range of movement of the movable part 20 to prevent it from damaging the sealing ring 11 or the bipolar plate 12 due to excessive movement during the pressing process. At the same time, the limiter 70 can also provide a clear stop signal when the movable part 20 reaches a preset position, helping the operator to accurately determine whether the attachment process is completed.

[0080] The elastic member 60 and the stopper 70 are connected to the base 40 and the movable member 20 through a stable connection structure. Such a connection structure generally includes fasteners such as bolts, nuts, and pins, and corresponding matching structures such as mounting holes and positioning grooves. The design of the connection structure must ensure that the connection between the components is firm and reliable and easy to disassemble and maintain.

[0081] The base 40 is located at the bottom to provide support for the entire device; the elastic member 60 and the stopper 70 are both arranged above the base 40 in the vertical direction and connected to the base 40; the movable member 20 is located above the elastic member 60 and the stopper 70 and connected to the elastic member 60. This positional relationship enables the various components to work closely together to complete the attachment task.

[0082] In a specific embodiment, the height difference between the movable member and the support member 50 after sliding downward along the vertical direction F2 is recorded as X4, which satisfies the formula:

[0083] X1<X2+X3+X4.

[0084] Specifically, it reflects the height difference X4 formed between the movable part 20 (especially when it is combined with the elastic part 60) and the support part 50 (fixed structure of the placement part 10) after sliding downward in the vertical direction F2. This height difference plus the total height (X2+X3) of the bipolar plate 12 and the sealing ring 11 needs to be greater than the depth X1 of the groove 31. However, this seemingly contradictory statement is actually describing a dynamic process: before attachment, the movable part 20 does not slide downward and is on the same horizontal plane as the placement block, and the depth of the groove 31 of the pressure plate 30 is greater than the total height (X2+X3) of the bipolar plate 12 and the sealing ring 11, so that the sealing ring 11 and the bipolar plate 12 are both located in the groove 31 and ready for attachment.

[0085] When the pressure plate 30 is fitted and connected with the movable part 20, and the movable plate slides vertically downward under the gravity of the pressure plate 30 (the pressure plate 30 and the movable plate slide accordingly) to the attached position, due to the compression of the elastic member 60 or the displacement of the movable part 20, the movable part 20 will form a height difference X4 with the support member 50. At this time, the total height of the entire structure (movable part 20+sealing ring 11+bipolar plate 12) will temporarily exceed the depth X1 of the groove 31, so that the fitting surface 311 of the groove 31 presses the bipolar plate 12 and the sealing ring 11.

[0086] In a specific embodiment, the bipolar sealing ring attaching device 100 further includes a guide member 80. The guide member 80 is arranged in a vertical direction, and one end of the guide member 80 is connected to the base 40, and the other end is connected to the movable member 20, and slides downward in the vertical direction F2 under the action of gravity.

[0087] Specifically, the guide member 80 is arranged in the vertical direction, and its shape and size are designed according to the movement requirements and space limitations of the movable member 20. One end of the guide member 80 is firmly connected to the base 40, and the other end is connected to the movable member 20, ensuring that the movable member 20 is always guided and constrained by the guide member 80 during the movement.

[0088] The guide member 80 is usually made of a material with high strength, high wear resistance and good guiding performance, such as stainless steel, aluminum alloy, etc., to ensure that it can maintain a stable shape and precision during use.

[0089] The guide member 80 and the movable member 20 are usually connected by sliding fit or rolling fit. Sliding fit is achieved through a slide rail and a slider, and has the advantages of simple structure and low manufacturing cost; rolling fit is achieved through rolling bodies such as balls and rollers, and has the advantages of low friction resistance and smooth movement. Select the appropriate connection method according to specific needs.

[0090] The connection position between the guide member 80 and the movable member 20 should ensure that the movable member 20 can always be guided by the guide member 80 during the movement. The guide member 80 is usually arranged on both sides or the center of the movable member 20 to form a stable guide channel.

[0091] In a specific embodiment, when viewed in the vertical direction, the elastic members 60 are respectively disposed at both ends of the width of the movable member 20, and two or more elastic members 60 are equidistantly distributed along the length of the movable member 20. When viewed in the vertical direction, a guide member 80 is disposed at the midpoint of the width of the movable member 20.

[0092] Specifically, elastic members 60 are respectively arranged at both ends of the width of the movable member 20 to ensure that the movable member 20 is uniformly supported in the horizontal direction. At the same time, two or more elastic members 60 are evenly distributed along the length direction of the movable member 20 to further increase the number of support points and improve the stability and uniformity of the support.

[0093] The elastic member 60 is connected to the movable member 20 and / or the guide member 80 through a connection structure (such as a bolt, a pin, a slot, etc.). The connection method should ensure that the elastic member 60 can be elastically deformed and absorb impact energy when subjected to pressure, while maintaining a stable connection with the movable member 20 and the guide member 80.

[0094] In a specific embodiment, the guide member 80 includes: a guide rod 81 and a linear bearing 82. The guide rod 81 is arranged in the vertical direction and is fixedly connected to the base 40; the linear bearing 82 is arranged in the vertical direction, one end of the linear bearing 82 is fixedly connected to the movable member 20, and the other end is slidably connected to the guide rod 81.

[0095] Specifically, the guide rod 81 is arranged in the vertical direction and is fixedly connected to the base 40. The function of the guide rod 81 is to provide precise guidance for the linear bearing 82 to ensure that the movable part 20 moves smoothly and accurately in the vertical direction. The material of the guide rod 81 should have high rigidity and wear resistance to reduce wear and deformation caused by long-term use.

[0096] The linear bearing 82 is arranged in the vertical direction, one end of which is fixedly connected to the movable part 20, and the other end is slidably connected to the guide rod 81. The design of the linear bearing 82 enables the movable part 20 to perform precise linear motion under the guidance of the guide rod 81. The linear bearing 82 uses a precise ball or roller structure inside to reduce friction and improve motion accuracy. At the same time, the sealing performance of the linear bearing 82 must also be guaranteed to prevent external impurities from entering and affecting the motion accuracy.

[0097] The linear bearing 82 slides on the guide rod 81 to achieve accurate movement of the movable member 20. This connection method not only ensures the movement accuracy of the movable member 20, but also reduces the friction resistance during the movement.

[0098] In a specific embodiment, the placement member 10 includes a placement groove 13. The placement groove 13 is opened at one end of the placement member 10 away from the movable member 20, is located in the placement member 10, and is placed between the sealing ring 11 and the bipolar plate 12.

[0099] Specifically, a placement groove 13 is provided at one end of the placement member 10 away from the base 40. These placement grooves 13 are precisely designed to ensure that the sealing ring 11 and the bipolar plate 12 can be placed in a predetermined position and posture. The shape, size and depth of the placement groove 13 need to be designed according to the actual size of the sealing ring 11 and the bipolar plate 12 to ensure that they can fit tightly and are not easy to fall off.

[0100] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A bipolar sealing ring attaching device, characterized in that: include: A placement component, wherein a sealing ring and a bipolar plate are placed in sequence upward in a vertical direction; A movable part, wherein the placement part is located inside the movable part; A pressing plate is placed above the movable member. Under the gravity of the pressing plate, the movable member slides downward in the vertical direction to press the bipolar plate. The pressing plate includes: The groove is opened at one end facing the bipolar plate and is connected to the bipolar plate when attached, wherein the depth of the groove is recorded as X1, the height of the bipolar plate is recorded as X2, and the height of the sealing ring is recorded as X3, satisfying the formula: X1>X2+X3.

2. The bipolar sealing ring attaching device according to claim 1, characterized in that: When viewed in the vertical direction, the groove, the sealing ring and the bipolar plate overlap; When viewed in the vertical direction, the movable member and the pressure plate overlap.

3. The bipolar sealing ring attaching device according to claim 1, characterized in that: The groove comprises: A bonding surface, facing one end of the bipolar plate, and being bonded to a side of the bipolar plate away from the sealing ring during bonding; The area of ​​the bonding surface is recorded as S1, and the area of ​​the side of the placement piece facing the bonding surface is recorded as S2, satisfying the formula: S1>S2.

4. The bipolar sealing ring attaching device according to claim 1, characterized in that: The bipolar sealing ring attaching device also includes: A base is arranged in a vertical direction; The support member is arranged in a vertical direction, and one end of the support member is fixedly connected to the base, and the other end of the support member is fixedly connected to the placement member.

5. The bipolar sealing ring attaching device according to claim 4, characterized in that: The bipolar sealing ring attaching device also includes: An elastic member is arranged in a vertical direction, one end of which is connected to the base, and the other end of which is connected to the movable member, and expands and contracts under the action of gravity; The limiting member is arranged in the vertical direction, and one end of the limiting member is connected to the base, and the other end of the limiting member is connected to the movable member when attached. The limiting member is located in the elastic member.

6. The bipolar sealing ring attaching device according to claim 5, characterized in that: The height difference between the movable part and the supporting part after sliding downward in the vertical direction is recorded as X4, which satisfies the formula: X1<X2+X3+X4.

7. The bipolar sealing ring attaching device according to claim 5, characterized in that: The bipolar sealing ring attaching device also includes: The guide member is arranged in the vertical direction, one end of which is connected to the base, and the other end of which is connected to the movable member, and slides downward in the vertical direction under the action of gravity.

8. The bipolar sealing ring attaching device according to claim 7, characterized in that: Observed along the vertical direction, the elastic members are respectively arranged at both ends of the width of the movable member, and two or more elastic members are equidistantly distributed along the length of the movable member; When viewed in the vertical direction, a guide member is provided at the midpoint of the width of the movable member.

9. The bipolar sealing ring attaching device according to claim 7, characterized in that: The guide member comprises: A guide rod, arranged in a vertical direction and fixedly connected to the base; The linear bearing is arranged along the vertical direction, one end of which is fixedly connected to the movable part, and the other end of which is slidably connected to the guide rod.

10. The bipolar sealing ring attaching device according to claim 4, characterized in that: The placement piece comprises: The placement groove is opened at one end of the placement piece away from the base, is located in the placement piece, and is placed on the sealing ring and the bipolar plate.

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