CN223333811U

CN223333811U - Pile pull rod device

Info

Publication number: CN223333811U
Application number: CN202422308090.2U
Authority: CN
Inventors: 刘士辰; 张高宁; 宋晨正; 方芳; 吴国春; 姜彩连; 王传谊
Original assignee: Beijing Hydrogen New Energy Technology Co ltd
Current assignee: Beijing Hydrogen New Energy Technology Co ltd
Priority date: 2024-09-20
Filing date: 2024-09-20
Publication date: 2025-09-12
Anticipated expiration: 2034-09-20

Abstract

The present disclosure provides a fuel cell tie rod device, comprising a bare fuel cell unit and a tie rod. The bare fuel cell unit comprises a first end plate and a second end plate, the first end plate and the second end plate being spaced apart and enclosing a clamping space for clamping and securing a fuel cell core. One end of the tie rod is fixedly mounted to the first end plate, and the tie rod is provided with an adjustment and positioning portion, which is used to connect the second end plate to different positions along the length of the tie rod to adjust the spacing between the second end plate and the first end plate. The fuel cell tie rod device of the present application can solve the problem of low versatility of fuel cell tie rod devices in the prior art.

Description

Pile pull rod device

Technical Field

The disclosure relates to the field of battery technology, and in particular relates to a pile pull rod device.

Background

At present, a pull rod type packaging mode is mostly adopted as a fixing mode of a fuel cell stack. When the packaging form of the pull rod is used, the reactor core (the battery assembly) is mainly installed and fixed through the fixed length of the pull rod, and different single cell sections in the reactor core are required to be matched with the pull rods with different lengths for installation and fixation, so that the universality of the pull rod is poor, the complexity of materials and the waste of resources are caused, the manufacturing cost is increased, and the impact resistance and the deformation resistance of the pull rod with the fixed length are poor.

According to patent search, china patent document CN220963420U discloses a fuel cell stack assembly, which comprises a stack main body, a first pressing plate and a second pressing plate which are opposite and spaced along a first direction, a pull rod assembly comprising a fixing seat, an elastic piece and a pull rod, wherein the fixing seat is positioned between the first pressing plate and the second pressing plate, one end of the pull rod is fixedly arranged on the second pressing plate, the other end of the pull rod stretches into the fixing seat, and the elastic piece is compressed between the fixing seat and the pull rod to drive the pull rod to move towards the first pressing plate along the first direction. Through first clamp plate, second clamp plate and pull rod subassembly cooperation, the elasticity of the elastic component in the pull rod subassembly can drive the pull rod and drive the second clamp plate and remove towards first clamp plate, is favorable to the pile main part to keep suitable compression, and the automatic compensation pile main part is because of ageing compression loss that causes, makes pile main part's compression load and rigidity keep at reasonable within range, and then improves fuel cell's leakproofness and conductivity. Although the cell stack is fixed by the pull rod, the length of the pull rod is fixed, the pull rod cannot be applied any more when the number of single cells in the cell stack needs to be changed, the universality of the pull rod is low, and therefore the pull rod device for the cell stack is provided.

Disclosure of utility model

The technical problem to be solved by the present disclosure is that the fixed length pile pull rod has poor versatility, impact resistance and deformation resistance when the core is installed and fixed.

To solve the above technical problem, an embodiment of the present disclosure provides a pile pull rod device, including:

The bare pile unit comprises a first end plate and a second end plate, and the first end plate and the second end plate are arranged at intervals and are surrounded to form a clamping space for clamping and fixing the reactor core;

One end of the pull rod is fixedly arranged on the first end plate, and an adjusting and positioning part is arranged on the pull rod and used for connecting the second end plate at different positions of the length direction of the pull rod so as to adjust the distance between the second end plate and the first end plate.

In some embodiments, one end of the pull rod is provided with a plurality of first connecting parts, each first connecting part comprises a fixed connecting hole and a first connecting piece, and the first connecting piece passes through the fixed connecting hole and is fixedly connected with the first end plate.

In some embodiments, the first end plate is provided with a first mounting groove for mounting the pull rod, and a limiting protrusion for limiting one end of the pull rod to the first mounting groove is arranged on the side wall of the first mounting groove.

In some embodiments, the tie rod is fixedly mounted to the first mounting groove by a first connector, the surface of the tie rod being flush with the surface of the first end plate.

In some embodiments, the adjustment positioning portion includes a plurality of second connection portions including a waist-shaped hole extending along a length direction of the pull rod and a second connection member connected to the second end plate through the waist-shaped hole.

In some embodiments, the second end plate is provided with a second mounting groove for mounting a tie rod, the surface of the tie rod being flush with the surface of the second end plate.

In some embodiments, the end of the pull rod facing away from the first end plate is provided with a bending portion, the bending portion is provided with an auxiliary locking piece, and the auxiliary locking piece can stretch back and forth along the length direction of the pull rod to be used for propping against the second end plate.

In some embodiments, the bending portion is provided with a threaded hole, and the auxiliary locking member includes a screw section screwed into the threaded hole, and the screw section is reciprocally retractable along a length direction of the pull rod for abutting against the second end plate.

In some embodiments, the shank segment comprises a screw with a rounded tip.

In some embodiments, a plurality of tie rods are symmetrically arranged at two opposite ends of the bare stack unit, and the length direction of each tie rod is along the first direction.

Through above-mentioned technical scheme, the pile pull rod device that this disclosure provided has solved the problem that the commonality is poor, shock-resistant and deformation-resistant ability is weak when the reactor core is installed to fixed length pile pull rod through the pull rod that sets up to have adjusting location portion. The pull rod can flexibly adjust the position of the second end plate in the length direction through the adjusting and positioning part, so that the device is suitable for reactor cores with different sizes, and the universality and the adaptability of the device are remarkably improved. In addition, the connection structure design of the pull rod and the first end plate and the second end plate, such as the first mounting groove, the limiting protrusions and the waist-shaped holes, not only enhances the connection stability, but also ensures the parallel and level of the pull rod and the surface of the end plate, and is beneficial to the compactness and the aesthetic property of the whole structure. The auxiliary locking piece design on the bending part further enhances the supporting and locking functions of the pull rod on the second end plate, and improves the impact resistance and deformation resistance of the device.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic view of a construction of a galvanic pile pull rod device according to an embodiment of the disclosure;

fig. 2 is an exploded view of a tie rod as disclosed in an embodiment of the present disclosure.

Reference numerals illustrate:

1. The bare pile unit comprises a bare pile unit body, 11 parts, a first end plate, 111 parts, a first mounting groove, 1111 parts, a limiting protrusion, 12 parts, a second end plate, 121 parts, a second mounting groove, 2 parts, a pull rod, 21 parts, an adjusting and positioning part, 211 parts, a second connecting part, 2111 parts, a waist-shaped hole, 2112 parts, a second connecting part, 22 parts, a first connecting part, 221 parts, a fixed connecting hole, 222 parts, a first connecting part, 23 parts, a bending part, 231 parts, an auxiliary locking part, 3 parts, a reactor core, 4 parts, a current collecting plate, 41 parts, a first current collecting plate, 42 parts and a second current collecting plate.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

It should be noted that, in the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is greater than or equal to two, and the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, or may be directly connected, or indirectly connected via an intermediary. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

Referring to fig. 1 to 2, according to an embodiment of the present application, there is provided a stack drawbar apparatus including a bare stack unit 1 and a drawbar 2. The bare stack unit 1 comprises a first end plate 11 and a second end plate 12, wherein the first end plate 11 and the second end plate 12 are arranged at intervals and enclose a clamping space for clamping and fixing the reactor core 3. One end of the pull rod 2 is fixedly arranged on the first end plate 11, an adjusting and positioning part 21 is arranged on the pull rod 2, and the adjusting and positioning part 21 is used for connecting the second end plate 12 at different positions in the length direction of the pull rod 2 so as to adjust the interval between the second end plate 12 and the first end plate 11.

In this embodiment, the second end plate 12 can be conveniently connected to different positions of the pull rod 2 by arranging the adjusting and positioning part 21 on the pull rod 2, so that the distance between the second end plate 12 and the first end plate 11 can be accurately adjusted as required, thereby meeting the clamping requirements of different reactor cores 3. The flexible adjustment of the distance enables the device to be suitable for reactor cores with different sizes and different compression requirements, and the universality and the adaptability of the device are improved. The first end plate 11 and the second end plate 12 are disposed at intervals and enclose to form a clamping space, so that the core 3 can be stably clamped and fixed, and movement or deformation of the core 3 in the working process can be prevented. The pull rod 2 serves as a connecting and supporting component, the stability of the whole clamping system is further enhanced through the strength and the stability of the pull rod, and the stable performance of the reactor core in the working state is ensured. The installation and adjustment process can be simplified and rapid by designing the adjusting and positioning part 21, and the installation and adjustment process can be completed without complex tools or complicated steps. When the core needs to be maintained or replaced, the distance between the positioning parts 21 can be easily adjusted and the core can be taken out, so that the maintenance difficulty and cost are reduced.

In some embodiments, one end of the pull rod 2 is provided with a plurality of first connecting portions 22, the first connecting portions 22 include a fixed connecting hole 221 and a first connecting member 222, and the first connecting member 222 is fixedly connected with the first end plate 11 after passing through the fixed connecting hole 221.

In this embodiment, the design of the plurality of first connecting portions 22 can make the connection between the tie rod 2 and the first end plate 11 more stable. Compared with a single-point connection multi-point fixing mode, the stress can be dispersed, and the connection failure risk caused by overlarge single-point stress is reduced. The pull rod 2 can be ensured to be stressed more uniformly when being stressed by tension or compression, and the problem of local stress concentration is avoided, so that the stability and the durability of connection are improved. The first connecting piece 222 passes through the fixed connecting hole 221 to be fixedly connected, so that the installation efficiency of the pull rod 2 is improved.

In some embodiments, the first end plate 11 is provided with a first mounting groove 111 for mounting the pull rod 2, and a limit protrusion 1111 for limiting one end of the pull rod 2 to the first mounting groove 111 is provided on a side wall of the first mounting groove 111.

In this embodiment, the first mounting groove 111 provides an accurate mounting location for one end of the pull rod 2, ensuring that the pull rod is accurately aligned and inserted during installation. The limiting protrusion 1111 is provided to effectively limit the movement of the pull rod 2 in the first mounting groove 111, and prevent the connection stability of the first connecting piece from being affected by looseness during the working process. Through the cooperation of first mounting groove 111 and spacing protruding 1111, be connected inseparabler and firm between pull rod 2 and the first terminal plate 11, strengthened the structural strength of whole pile pull rod device, help reducing because of vibration or external force effect the part is not hard up or warp, promoted the stability and the reliability of whole device.

In some embodiments, the tie rod 2 is fixedly mounted to the first mounting groove 111 by the first connector 222, and the surface of the tie rod 2 is flush with the surface of the first end plate 11.

In this embodiment, the pull rod 2 is fixedly mounted in the first mounting groove 111 by the first connecting piece 222, so that the mounting stability of the pull rod 2 is improved. The flush design of the tie rod 2 with the surface of the first end plate 11 helps to reduce the space occupied by the device, making the overall structure more compact. The surface of the pull rod 2 is flush with the first end plate 11, so that collision or scraping risks caused by the protrusion of the pull rod are avoided, and safety in the use process is improved. The pull rod is beneficial to reducing the risk of loosening or falling of the pull rod caused by external force, and further ensures the stability and reliability of the device.

In some embodiments, the first connector 222 comprises a connecting screw or connecting bolt, which ensures that the connection between the pull rod 2 and the first end plate 11 is both stable and reliable. The connecting screw or the connecting bolt can tightly lock the connection between the pull rod and the first end plate through the screwing action of the screw thread, and the looseness caused by vibration or external force action is effectively prevented. The installation and the disassembly processes of the connecting screw or the connecting bolt are relatively simple and quick, and the subsequent maintenance and replacement work are convenient.

In some embodiments, the adjusting and positioning portion 21 includes a plurality of second connection portions 211, the second connection portions 211 including a waist-shaped hole 2111 and a second connection member 2112, the waist-shaped hole 2111 extending along a length direction of the tie rod 2, the second connection member 2112 being connected to the second end plate 12 through the waist-shaped hole 2111. The waist-shaped hole 2111 is in a countersunk groove of the second connection portion 211, and when the second connection member 2112 passes through the waist-shaped hole 2111, the top of the second connection member 2112 is lower than the outer surface of the second connection portion 211.

In this embodiment, the design of the waist-shaped hole 2111 can allow the second connector 2112 to slide in the hole along the length direction of the pull rod 2 within a certain range, so as to achieve fine adjustment of the position of the pull rod 2, and thus find the optimal position configuration under different working conditions or installation conditions. By adjusting the position of the second connector 2112 in the waist-shaped hole 2111, the mounting requirements of components with different sizes or shapes can be met, and the universality and adaptability of the whole device are improved. By the close fit of the second connector 2112 and the waist-shaped hole 2111, the risk of loosening caused by vibration or impact can be effectively reduced, and the stability and reliability of connection can be ensured. The waist-shaped hole 2111 is designed in the sinking groove, and the top of the second connecting piece 2112 is lower than the outer surface of the second connecting part 211 when passing through, so that the second connecting piece can be effectively protected from being directly influenced by the external environment, and meanwhile, the compactness and the safety of the connecting part are improved.

In some embodiments, the second end plate 12 is provided with a second mounting groove 121 for mounting the tie rod 2, the surface of the tie rod 2 being flush with the surface of the second end plate 12.

In this embodiment, the second mounting groove 121 for mounting the pull rod 2 is provided on the second end plate 12, and the second mounting groove 121 provides an accurate mounting position and guiding for the pull rod 2, so that the pull rod can be aligned and inserted accurately in the mounting process, thereby avoiding mounting deviation, helping to firmly fix the pull rod on the second end plate 12, preventing slipping or loosening during the working process, and ensuring the stability and reliability of connection. By arranging the surface of the pull rod 2 flush with the second end plate 12, risks such as scraping, collision and the like caused by the protrusion of the pull rod are avoided, and safety in the use process is improved.

In some embodiments, the second connector 2112 includes a connecting screw or connecting bolt that enhances the stability and reliability of the connection between the tie rod 2 and the second end plate 12. Not only can effectively prevent the sliding or loosening of pull rod in the course of the work, can also finely tune the position of pull rod through adjusting the fastening degree of screw or bolt to adapt to different installation condition and operating mode demands.

In some embodiments, the end of the pull rod 2 facing away from the first end plate 11 is provided with a bending portion 23, the bending portion 23 is provided with an auxiliary locking member 231, and the auxiliary locking member 231 can reciprocate along the length direction of the pull rod 2 to be used for abutting against the second end plate 12.

In this embodiment, the bending portion 23 and the auxiliary locking member 231 thereon are designed, and can firmly abut against the second end plate 12 through the function of reciprocating expansion along the length direction of the pull rod 2, so as to enhance the locking stability between the pull rod 2 and the second end plate 12, reduce the loosening risk caused by vibration or external force, and improve the stability and safety of the whole structure. The telescoping design of the secondary locking member 231 allows for flexible adjustment of its position during installation to accommodate different installation environments and requirements. By adjusting the telescopic length of the auxiliary locking member 231, the connection tightness between the tie rod 2 and the second end plate 12 can be adjusted to a certain extent, thereby increasing the adaptability of the galvanic pile tie rod device in different application scenarios.

In some embodiments, the bending portion 23 is provided with a threaded hole, and the auxiliary locking member 231 includes a screw section screwed into the threaded hole, and the screw section can reciprocate along the length direction of the pull rod 2 to be abutted against the second end plate 12.

In this embodiment, through set up the screw hole on bending portion 23 to set up the screw rod section of spiro union wherein, realized auxiliary locking piece along pull rod length direction's accurate regulation and firm locking, ensured that the connection between pull rod and the second end plate is more firm, effectively resisted vibrations and the not hard up under the exogenic action, improved overall structure's stability and security. The screw connection design of the screw rod section can realize that the extension length of the screw rod section can be easily adjusted according to the needs so as to adapt to different installation environments and fastening requirements. The screw rod section can keep higher precision and stability in the flexible in-process of threaded connection's characteristic to realized the accurate control to locking position, help reducing the performance decline because of installation error or not hard up leads to, guaranteed the work efficiency and the reliability of device.

In some embodiments, the shank segment comprises a screw with a rounded tip.

In this embodiment, the round pointed screw design is adopted, so that scratches or damages to the second end plate 12, which may be caused in the mounting or dismounting process, are effectively avoided. The soft morphology of the rounded nose nail tip reduces friction and impact with the second end plate.

In some embodiments, the opposite ends of the bare stack unit 1 are symmetrically provided with a plurality of tie rods 2, and the length directions of the plurality of tie rods 2 are arranged along a first direction (a direction indicated by an X-axis as shown in fig. 1).

In this embodiment, the opposite ends of the bare pile unit 1 are symmetrically provided with a plurality of tie rods 2 extending along the first direction, so that the bare pile unit 1 can uniformly distribute stress when being stressed, structural damage caused by local stress concentration is effectively prevented, and stability and durability of the whole structure are improved. The plurality of pull rods 2 increase the redundancy of the structure, and even if one pull rod fails, the other pull rods still can bear load continuously, so that the structural strength of the bare stack unit 1 is improved.

In some embodiments, the first end plate 11 and the second end plate 12 are provided with a current collecting plate 4 for collecting the current generated from the core on a side near the clamping space, the current collecting plate 4 includes a first current collecting plate 41 and a second current collecting plate 42, the first current collecting plate 41 is fixed to a side of the first end plate 11 near the clamping space, and the second current collecting plate 42 is fixed to a side of the second end plate near the clamping space.

In this embodiment, the first current collecting plate 41 and the second current collecting plate 42 are respectively disposed on the sides of the first end plate 11 and the second end plate 12 close to the clamping space, so that the collection and distribution efficiency of the current in the pile can be significantly improved. The collector plate 4 is a key component for current conduction, and is effectively arranged to ensure that current flows uniformly and rapidly from each single battery to the end plate, and then is led out from the end plate to an external circuit. The first and second current collecting plates 41 and 42 are fixed to the respective sides of the first and second end plates 11 and 12, respectively, not only enhances structural stability, but also optimizes current paths and reduces energy loss. The resistance difference between the single batteries is reduced, and the output voltage and the power density of the whole electric pile are improved.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A galvanic pile pull rod device, comprising:

the bare pile unit (1), the bare pile unit (1) comprises a first end plate (11) and a second end plate (12), and the first end plate (11) and the second end plate (12) are arranged at intervals and enclose a clamping space for clamping and fixing a reactor core (3);

The pull rod (2), one end fixed mounting of pull rod (2) in first end board (11), be provided with on pull rod (2) and adjust location portion (21), adjust location portion (21) be used for with second end board (12) are connected in the different positions of the length direction of pull rod (2) in order to adjust second end board (12) with interval between first end board (11).

2. The galvanic pile pull rod device according to claim 1, characterized in that one end of the pull rod (2) is provided with a plurality of first connecting parts (22), the first connecting parts (22) comprise a fixed connecting hole (221) and a first connecting piece (222), and the first connecting piece (222) is fixedly connected with the first end plate (11) after passing through the fixed connecting hole (221).

3. The galvanic pile tie device according to claim 2, characterized in that the first end plate (11) is provided with a first mounting groove (111) for mounting the tie rod (2), and that a limit projection (1111) for limiting one end of the tie rod (2) to the first mounting groove (111) is provided on a side wall of the first mounting groove (111).

4. A galvanic pile tie device according to claim 3, characterized in that the tie rod (2) is fixedly mounted to the first mounting groove (111) by means of the first connection piece (222), the surface of the tie rod (2) being flush with the surface of the first end plate (11).

5. The galvanic pile tie rod device according to claim 1, wherein the adjustment positioning portion (21) comprises a plurality of second connection portions (211), the second connection portions (211) comprising a waist-shaped hole (2111) and a second connection member (2112), the waist-shaped hole (2111) extending in a length direction of the tie rod (2), the second connection member (2112) being connected with the second end plate (12) through the waist-shaped hole (2111).

6. Galvanic pile tie device according to claim 5, characterized in that the second end plate (12) is provided with a second mounting groove (121) for mounting the tie rod (2), the surface of the tie rod (2) being flush with the surface of the second end plate (12).

7. Galvanic pile tie device according to claim 6, characterized in that the end of the tie rod (2) facing away from the first end plate (11) is provided with a bent portion (23), the bent portion (23) is provided with an auxiliary locking member (231), the auxiliary locking member (231) being reciprocally telescopic in the length direction of the tie rod (2) for abutment against the second end plate (12).

8. Pile tie rod device according to claim 7, characterized in that the bending part (23) is provided with a threaded hole, the auxiliary locking piece (231) comprises a screw section screwed into the threaded hole, the screw section being reciprocally telescopic in the length direction of the tie rod (2) for abutment against the second end plate (12).

9. The galvanic pile tie device of claim 8, wherein the screw section comprises a screw with a rounded tip.

10. The galvanic pile lever arrangement according to any one of claims 1 to 9, characterized in that the opposite ends of the bare pile unit (1) are symmetrically provided with a number of the levers (2), the length direction of each of the levers (2) being arranged in a first direction.