Graphite bipolar plate

Abstract

The utility model discloses a graphite bipolar plate which comprises a first bipolar plate body, a first electrode plate body is arranged at the bottom of the first bipolar plate body, a conducting film is arranged at the bottom of the first electrode plate body, a second electrode plate body is arranged at the bottom of the conducting film, and a second bipolar plate body and a clamping mechanism are arranged at the bottom of the second electrode plate body. The clamping mechanism comprises inserting blocks fixedly connected to the front face and the back face of the first bipolar plate, fixing blocks are slidably connected to the surfaces of the inserting blocks, the inner sides of the fixing blocks are fixedly connected to the front face and the back face of the second bipolar plate, and clamping blocks are movably connected to the bottoms of the left side and the right side of each inserting block. And the clamping block is arranged in the fixed block and is in sliding connection with the inner wall of the fixed block. When the graphite bipolar plate is used, under the action of the clamping mechanism and the limiting mechanism, the graphite bipolar plate can be quickly mounted, the problem that the conventional graphite bipolar plate is complicated to mount due to no additional clamping structure is avoided, and the graphite bipolar plate has the advantage of convenience in use.

Description

TECHNICAL FIELD

[0001] The utility model relates to bipolar plate technical field, concretely is a kind of graphite bipolar plate. BACKGROUND

[0002] Graphite bipolar plate is a kind of special electrode plate material, it plays an important role in multiple fields, especially in electrochemical industry. Graphite bipolar plate has excellent conductivity and corrosion resistance, which makes it an ideal material for manufacturing high-temperature batteries, capacitors, electrolytic cells and energy storage devices, etc. In fuel cells, graphite bipolar plate, as one of the core components, not only helps to make the temperature distribution of the battery stack uniform, achieving heat dissipation effect, but also is responsible for collecting current and setting flow channels to make the reaction gas uniformly distributed. In addition, graphite bipolar plate also has good high-temperature resistance and can work stably for a long time in high-temperature environment without polluting metal materials.

[0003] For example, Chinese patent application No. 202123442835.7 discloses a graphite bipolar plate, which includes a cathode plate and an anode plate bonded together. The surface of the cathode plate facing away from the anode plate is arranged with an air shunt area and a plurality of parallel air flow channels. The surface of the anode plate facing away from the cathode plate is arranged with a hydrogen shunt area and a plurality of parallel hydrogen flow channels. The surface of the anode plate close to the cathode plate or the surface of the cathode plate close to the anode plate is arranged with a plurality of parallel cooling liquid flow channels. The overall thickness of the graphite bipolar plate is 0.85-0.95 mm. The utility model provides an ultra-thin graphite bipolar plate, which can be applied to high-power density stacks to reduce the volume of fuel cells. However, the utility model lacks an efficient and simple quick clamping structure, which makes the process of installing the graphite bipolar plate complex and tedious, thereby increasing the time required for installation and reducing the overall installation efficiency.

[0004] In the actual application process of graphite bipolar plate, a common problem is the lack of an efficient and simple quick clamping structure. Due to the lack of such structure, the process of installing the graphite bipolar plate often becomes complex and tedious, requiring multiple steps to be performed, which not only increases the time required for installation, but also significantly reduces the overall installation efficiency.

[0005] Therefore, it is necessary to design and improve the graphite bipolar plate to effectively prevent the installation from being complex. UTILITY MODEL CONTENT

[0006] To solve the problems raised in the above background technology, the purpose of the utility model is to provide a graphite bipolar plate with the advantage of being easy to use, which solves the problem of complex installation.

[0007] To achieve the above object, the utility model provides the following technical scheme: A kind of graphite bipolar plate, including bipolar plate one, the bottom of the bipolar plate one is provided with electrode plate one, the bottom of the electrode plate one is provided with conductive film, the bottom of the conductive film is provided with electrode plate two, the bottom of the electrode plate two is provided with bipolar plate two, clamping mechanism, clamping mechanism includes the plug block fixedly connected at the front and back of bipolar plate one, the surface of the plug block is slidably connected with fixed block, the inside of the fixed block is fixedly connected at the front and back of bipolar plate two, the bottom of the left and right sides of the plug block is movably connected with clamping block, the clamping block is placed in the inside of fixed block and slidably connected with its inner wall, the outside of the clamping block extends to the left and right sides of fixed block and is movably connected with limit block, the limit block has tenacity, the top of the inside of the limit block is fixedly connected at the front and back of bipolar plate one, the plug block can be inserted into the inside of fixed block and extrude clamping block to move to the left and right sides and be clamped into the inside of limit block, the front and back of the bipolar plate two are provided with limiting mechanism.

[0008] As the utility model is preferred, limiting mechanism includes the support block setting in the left and right sides of plug block, the inside of the support block is fixedly connected at the front and back of bipolar plate two, the inner wall of the support block is fixedly connected with round rod, the surface of the round rod is movably connected with movable block, the movable block can be flipped to the direction of limit block and extrude the side of limit block away from clamping block, to limit the movement of limit block and clamping block.

[0009] As the utility model is preferred, the side of the movable block close to bipolar plate two is fixedly connected with tension spring, the side of the tension spring away from movable block is fixedly connected on the surface of bipolar plate two, the tension spring can pull movable block to automatically extrude limit block.

[0010] As the utility model is preferred, the top of the movable block is fixedly connected with antiskid strip, the top of the antiskid strip has elasticity and antiskid ability.

[0011] As the utility model is preferred, the top and bottom of the inner wall of fixed block are fixedly connected with protruding block, the inside of the protruding block is slidably connected with the surface of clamping block, the protruding block can limit the sliding position of clamping block, prevent it from separating from the inside of fixed block.

[0012] As the utility model is preferred, the top of the limit block and fixed block is provided with arc angle, the arc angle can make its surface more smooth.

[0013] Compared with prior art, the utility model has the advantages as follows:

[0014] 1, the utility model uses, under the action of clamping mechanism and limiting mechanism, graphite bipolar plate can be installed quickly, avoid the existing graphite bipolar plate without additional clamping structure leads to installation complex, make it have the advantage that is convenient to use.

[0015] 2、 The utility model discloses through setting limit mechanism, further strengthened the stability of bipolar plate connection. The movable block can overturn and extrude the limit block, thereby limit the movement of limit block and the card block, avoided the connection slack of the external factor. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic drawing of the utility model;

[0017] Figure 2 It is the structure side view of the utility model;

[0018] Figure 3 It is the carding mechanism schematic drawing of the utility model;

[0019] Figure 4 It is the limit mechanism schematic drawing of the utility model.

[0020] In the drawing: 1, bipolar plate one;2, electrode plate one;3, conducting film;4, bipolar plate two;5, plug block;6, fixed block;7, card block;8, limit block;9, support block;10, round rod;11, movable block;12, tension spring;13, antiskid strip;14, lug;15, arc angle;16, electrode plate two. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0022] As Figures 1 to 4The utility model provides a kind of graphite bipolar plate shown, the utility model provides a kind of graphite bipolar plate, including bipolar plate one 1, the bottom of bipolar plate one 1 is provided with electrode plate one 2, the bottom of electrode plate one 2 is provided with conductive film 3, the bottom of conductive film 3 is provided with electrode plate two 16, the bottom of electrode plate two 16 is provided with bipolar plate two 4, clamping mechanism, clamping mechanism includes the plug block 5 of fixed connection in the front and back of bipolar plate one 1, the surface of plug block 5 is slidably connected with fixed block 6, the inside of fixed block 6 is fixedly connected in the front and back of bipolar plate two 4, the bottom of plug block 5 left and right sides is movably connected with clamping block 7, clamping block 7 is placed in the inside of fixed block 6 and slidably connected with its inner wall, the outside of clamping block 7 extends to the left side and right side of fixed block 6 and movably connected with limiting block 8, limiting block 8 has tenacity, the top of the inside of limiting block 8 is fixedly connected in the front and back of bipolar plate one 1, plug block 5 can be inserted into the inside of fixed block 6 and extrude clamping block 7 to move to left and right sides and be clamped into the inside of limiting block 8, the front and back of bipolar plate two 4 are provided with limiting mechanism.

[0023] Reference Figure 4 Limiting mechanism includes the support block 9 of setting in the left and right sides of plug block 5, the inside of support block 9 is fixedly connected in the front and back of bipolar plate two 4, the inner wall of support block 9 is fixedly connected with round rod 10, the surface of round rod 10 is movably connected with movable block 11, movable block 11 can overturn to the direction of limiting block 8 and extrude the side of limiting block 8 away from clamping block 7, to limit the movement of limiting block 8 and clamping block 7.

[0024] As a kind of technical optimization scheme of the utility model, by setting limiting mechanism, further enhance the stability of bipolar plate connection.Activity block 11 can overturn and extrude limiting block 8, to limit the movement of limiting block 8 and clamping block 7, avoid the connection slack caused by external factors.

[0025] Reference Figure 4 One side of movable block 11 close to bipolar plate two 4 is fixedly connected with tension spring 12, the side of tension spring 12 away from movable block 11 is fixedly connected on the surface of bipolar plate two 4, and tension spring 12 can pull movable block 11 to automatically extrude limiting block 8.

[0026] As a kind of technical optimization scheme of the utility model, by setting tension spring 12, so that movable block 11 can automatically overturn and extrude limiting block 8 when not subjected to external force, to maintain the stability of connection.This design not only simplifies the operation process, also improves the safety and reliability of connecting device.

[0027] Reference Figure 3 The top of movable block 11 is fixedly connected with anti-skid strip 13, and the top of anti-skid strip 13 has elasticity and anti-skid ability.

[0028] As a technical optimization of this utility model, by setting the anti-slip strip 13, the friction between the movable block 11 and the hand or other operating tools is increased, preventing misoperation or damage caused by slippage during operation.

[0029] refer to Figure 3 The top and bottom of the inner wall of the fixing block 6 are fixedly connected with protrusions 14. The inner side of the protrusions 14 is slidably connected to the surface of the card block 7. The protrusions 14 can limit the sliding position of the card block 7 and prevent it from leaving the interior of the fixing block 6.

[0030] As a technical optimization of this utility model, by setting the protrusion 14, the sliding position of the locking block 7 is restricted, preventing it from dislodging from the interior of the fixing block 6. This design not only improves the stability of the connecting device, but also avoids connection failure caused by the locking block 7 falling off.

[0031] refer to Figure 3 Both the limiting block 8 and the fixing block 6 have an arc angle 15 on their tops, which makes their surfaces smoother.

[0032] As a technical optimization of this utility model, by setting an arc angle of 15°, the surfaces of the limiting block 8 and the fixing block 6 are made smoother, reducing damage caused by friction or collision during use. This design not only improves the service life of the connecting device but also enhances its aesthetics.

[0033] The working principle and usage of this utility model are as follows: When connecting bipolar plate 1 and bipolar plate 4, firstly, move bipolar plate 1 downwards to insert the insert block 5 into the fixing block 6. As the insert block 5 goes deeper, the locking block 7 is squeezed and moves to the left and right sides until it is locked into the limiting block 8. At this time, due to the toughness of the limiting block 8, the locking block 7 is firmly fixed inside the limiting block 8, thus realizing the locking connection between the bipolar plates. Then, the movable block 11 can be flipped to squeeze the limiting block 8 away from the locking block 7, thereby tightening the locking block 7 and the limiting block 8, making their locking more stable. This avoids the complex installation caused by the lack of an additional locking structure in existing graphite bipolar plates, giving it the advantage of ease of use.

[0034] In summary, when this utility model is used, the engagement mechanism and the limiting mechanism enable the rapid installation of graphite bipolar plates, avoiding the complex installation caused by the lack of additional engagement structure in existing graphite bipolar plates. This gives it the advantage of ease of use and solves the problem of complex installation.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A graphite bipolar plate, comprising a first bipolar plate (1), wherein an electrode plate (2) is disposed at the bottom of the first bipolar plate (1), a conductive membrane (3) is disposed at the bottom of the electrode plate (2), an electrode plate (16) is disposed at the bottom of the conductive membrane (3), and a second bipolar plate (4) is disposed at the bottom of the electrode plate (16), characterized in that: The engaging mechanism includes an insert block (5) fixedly connected to the front and back of the bipolar plate one (1). A fixing block (6) is slidably connected to the surface of the insert block (5). The inner side of the fixing block (6) is fixedly connected to the front and back of the bipolar plate two (4). A locking block (7) is movably connected to the bottom of the left and right sides of the insert block (5). The locking block (7) is placed inside the fixing block (6) and slidably connected to its inner wall. The outer side of the locking block (7) extends to the left and right sides of the fixing block (6) and is movably connected to a limiting block (8). The limiting block (8) is resilient. The top of the inner side of the limiting block (8) is fixedly connected to the front and back of the bipolar plate one (1). The insert block (5) can be inserted into the interior of the fixing block (6) and squeeze the locking block (7) to move to the left and right sides and lock into the interior of the limiting block (8). The front and back of the bipolar plate two (4) are provided with limiting mechanisms.

2. The graphite bipolar plate according to claim 1, characterized in that: The limiting mechanism includes support blocks (9) arranged on the left and right sides of the insertion block (5). The inner side of the support block (9) is fixedly connected to the front and back sides of the bipolar plate (4). A round rod (10) is fixedly connected to the inner wall of the support block (9). A movable block (11) is movably connected to the surface of the round rod (10). The movable block (11) can be flipped towards the limiting block (8) and squeeze the limiting block (8) away from the locking block (7), thereby limiting the movement of the limiting block (8) and the locking block (7).

3. A graphite bipolar plate according to claim 2, characterized in that: A tension spring (12) is fixedly connected to the side of the movable block (11) close to the bipolar plate (4). The side of the tension spring (12) away from the movable block (11) is fixedly connected to the surface of the bipolar plate (4). The tension spring (12) can pull the movable block (11) to automatically squeeze the limiting block (8).

4. A graphite bipolar plate according to claim 2, characterized in that: The top of the movable block (11) is fixedly connected to an anti-slip strip (13), the top of which has elasticity and anti-slip capability.

5. A graphite bipolar plate according to claim 1, characterized in that: The top and bottom of the inner wall of the fixing block (6) are fixedly connected with protrusions (14). The inner side of the protrusions (14) is slidably connected to the surface of the card block (7). The protrusions (14) can restrict the sliding position of the card block (7) and prevent it from leaving the interior of the fixing block (6).

6. A graphite bipolar plate according to claim 1, characterized in that: The top of both the limiting block (8) and the fixing block (6) is provided with an arc angle (15), which makes their surfaces smoother.

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