CN217468512U - Shell structure for packaging fuel cell stack, fuel cell stack and integrated packaging mechanism - Google Patents
Shell structure for packaging fuel cell stack, fuel cell stack and integrated packaging mechanism Download PDFInfo
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- CN217468512U CN217468512U CN202221127290.2U CN202221127290U CN217468512U CN 217468512 U CN217468512 U CN 217468512U CN 202221127290 U CN202221127290 U CN 202221127290U CN 217468512 U CN217468512 U CN 217468512U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model relates to a fuel cell technical field especially relates to a fuel cell piles shell structure, fuel cell pile and integration packaging mechanism for the encapsulation. The housing structure for packaging a fuel cell stack includes: a main shell with the top end and the front end opened; the tensioning structure is arranged at the front end of the main shell and used for realizing adjustable fixation of the galvanic pile electric core in the main shell; the cover plate is arranged above the main shell and the tensioning structure; the encapsulation of galvanic pile electricity core is realized to main casing body, tension structure and apron common assembly. The packaging shell structure ensures that a packaging structure integrating pre-tightening and shell packaging is realized after the cell stack is pressed, and has excellent mechanical strength and service life guarantee under the condition of long-term vibration.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a fuel cell piles shell structure, fuel cell pile and integration packaging mechanism for the encapsulation.
Background
The fuel cell stack is the core part of a power generation system of the proton exchange membrane fuel cell and is formed by laminating and packaging membrane electrode assemblies and bipolar plates which are stacked layer by layer. At present, the packaging of the fuel cell stack mostly adopts a steel belt, a pull rod or a screw rod type packaging mode, and a shell is assembled after the packaging is finished so as to enhance the functions of protection, insulation, sealing and the like. The steel belt packaging has the problems of insufficient packaging force, poor parallelism of two tail plates, electric pile deformation and the like; the packaging of the pull rod has the problems of poor parallelism of two tail plates, different pretightening force of each pull rod and the like; although the screw type package can ensure the assembly force, the length of each part of the stack still has a big difference after the stack is assembled and fastened, the reliability of the internal structure of the stack still cannot be ensured, and the problems of poor reliability of the stack, reduced electrical property of the fuel cell and increased voltage attenuation rate in the whole life cycle are caused by the above problems; and the galvanic pile after the encapsulation can not be directly installed and used, and a shell is required to be assembled outside the galvanic pile, so that the whole volume and mass are large, the structure is complex, and the application and the production of modularization and miniaturization are not facilitated. Therefore, a fast, simple and reliable package structure and package method are needed to solve the above problems.
In the prior art, the packaging methods of insulating pull rods, pull belts and the like disclosed in CN110931834A have the defects of insufficient packaging force, poor parallelism of two tail plates, deformation of a stack and the like. The packaging box body or the shell disclosed by CN213242620U, CN214898528U, CN207947348U, CN112751069A and CN110061278A is suitable for a mode of packaging again after fastening a galvanic pile, and has the defects of large volume and mass and complex installation. CN215578651U adopts the encapsulation mode of directly installing the apron on the galvanic pile tailboard after the compression, constitutes the casing with galvanic pile both ends tailboard and apron all around, need not encapsulate alone. When the shell is packaged, the lateral limit of the galvanic pile needs to be removed, so that the galvanic pile is easy to twist; the buffer structure in the height direction of the reactor is not arranged inside, so that constant load cannot be applied, and the expansion and contraction of the reactor cannot be responded; the pile can only be disassembled on special pile disassembling equipment, and the manual disassembly is dangerous; when the parallelism of the electric pile tail plate is poor, the mounting cover plate is always in a poor state; the parts are many, the process is tedious, the accuracy is poor, it is difficult to realize automated production. The packaging structure of CN111785999A is similar to the packaging principle of CN215578651U, the shell is mounted on a press after compression, independent packaging is not needed, and the lateral limit of the galvanic pile needs to be removed when a packaging shell exists, so that the galvanic pile is easy to distort; the buffer structure in the height direction of the reactor is not arranged inside, so that constant load cannot be applied, and the expansion and contraction of the reactor cannot be responded; in order to ensure the installation in a compression state, a larger reserved opening is arranged at the tail plate of the shell, so that the problem of polar plate damage caused by uneven stress of the tail plate is easy to occur. CN110098414A adopts the integrated packaging mode, at first compresses the pile into the frame structure, seals each plane of the frame structure with the cover plate, and this kind of packaging mode is similar to the transition packaging mode of independent packaging and independent packaging.
The technical shell has the advantages of complex structure, scattered parts, difficult assembly, difficult guarantee of assembly precision and lower reliability; the stack buffer structure cannot be oriented, the parallelism of the tail plates is difficult to ensure, and a single Gas Diffusion Layer (GDL) cannot have better compression consistency; the assembly process is too tedious, a plurality of installation auxiliary components are needed, the assembly difficulty is high, and automatic production is difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shell structure, fuel cell pile and integration packaging mechanism for the encapsulation, this encapsulation are guaranteed with shell structure and are piled the back at the pressfitting battery, realize the packaging structure of pretension and two unifications of casing encapsulation, have good mechanical hardness concurrently and guarantee under the long-term vibration condition life-span, have solved the problem that exists among the prior art.
In order to realize the above object of the present invention, the present invention adopts one of the following technical solutions:
a housing structure for fuel cell stack packaging, comprising:
the top end and the front end of the main shell are arranged in an open mode;
the tensioning structure is arranged at the front end of the main shell and used for realizing adjustable fixation of the cell stack electric core in the main shell;
the cover plate is arranged above the main shell and the tensioning structure;
the main casing body, the tensioning structure and the cover plate are assembled together to package the electric core of the electric pile.
Further, the tensioning structure comprises an end plate, a pressure plate and a guiding telescopic structural part; the end plate is connected with the front end of the main shell, and the pressing plate is movably arranged on the inner side of the end plate through the guide telescopic structural part; the guiding telescopic structural part is an elastic guiding telescopic structural part;
the main shell comprises a lower supporting panel, a side panel and a rear supporting panel, wherein the side panel comprises a side limiting surface and a pile guiding surface; a gas-liquid exchange port is arranged on the rear supporting panel, and an integrated interface is connected at the gas-liquid exchange port outside the rear supporting panel;
the cover plate is fixedly assembled with the end plate and the top end of the main shell.
Furthermore, the end plate is fixedly connected with the front end of the main shell through a fastening bolt; the cover plate, the end plate and the top of the main shell are assembled and fixed through fastening bolts.
Further, all set up the strengthening rib on main casing body, apron and end plate lateral wall. So set up, but guarantee shell structure's bulk strength in the at utmost, prevent to take place to warp, the at utmost reduces the material use simultaneously, reduces product weight, reduces the cost.
Furthermore, rubber mats are arranged in the gas-liquid exchange port and on the outer side of the gas-liquid exchange port arranged on the rear supporting panel. The rubber pad can prevent the leakage of gas and liquid; and hydrogen, oxygen and refrigerating fluid enter the electric core of the galvanic pile through the integrated interface to participate in reaction.
Furthermore, the elastic guide telescopic structural part comprises a guide post arranged on the end plate, one end of the guide post penetrates out of the end plate, and the other end of the guide post is connected with the pressing plate; and a tension spring and a limit bolt are arranged between the pressure plate outside the guide post and the end plate.
Furthermore, the other end of the guide post is fixedly connected with the pressing plate, a spring limiting groove is formed in the side wall of the pressing plate outside the guide post, one end of the tensioning spring is arranged in the spring limiting groove, and the other end of the tensioning spring is connected with the inner wall of the end plate.
Furthermore, the tensioning springs are uniformly arranged on the side wall of the pressing plate at intervals.
Furthermore, reinforcing ribs are arranged on the side wall of the side, opposite to the end plate, of the pressing plate; a first groove is formed in the side wall of the side, opposite to the inner part of the main shell, of the pressing plate; and a second groove is arranged on the rear support panel corresponding to the first groove.
Further, the first groove and the second groove are vertical through grooves matched with tail plates at two ends of the electric core of the pile.
Further, an observation window and an air inlet and outlet hole are also arranged on the main shell 1; the observation window can observe the state of the electric pile core 4, and can carry out daily maintenance and troubleshooting under the condition of not disassembling the electric pile core; the gas inlet and outlet can be used for actively and passively discharging gas leaked from the electric core of the electric pile.
Furthermore, the limiting bolts can be replaced by limiting rings arranged on the guide columns outside the end plates; the guide post is sleeved with a limiting ring, and the limiting ring is abutted against the outer side of the end plate under the action of the tensioning spring to play a limiting role the same as that of the limiting bolt.
The utility model adopts the technical scheme that:
a fuel cell stack comprises a plurality of stacked battery cells, and the plurality of stacked battery cells are packaged in the fuel cell stack packaging shell structure.
Furthermore, a plurality of stacked battery monomers form a galvanic pile battery cell, and the galvanic pile battery cell structure comprises a tail plate, a bipolar plate, a membrane electrode, a copper electrode and an insulation plate; wherein, two Gas Diffusion Layers (GDL) are respectively arranged at two sides of the membrane electrode.
Further, an elastic cushion pad is arranged on the inner side wall of the main shell. The elastic buffer cushion can avoid the bipolar plate from directly contacting with the main shell, reduce the impact and vibration influence from the shell structure and avoid the damage to the bipolar plate.
Further, raised surfaces are provided on both the lower support panel and the inner side walls of the side panels 12. So set up, can improve main casing body lateral wall intensity, guarantee with the plane degree of electric pile electricity core contact surface, can avoid the inside soaking of electric pile electricity core when depositing water of shell structure simultaneously.
Furthermore, an elastic buffer cushion is arranged between the cover plate and the electric pile cell. So set up, can prevent to transport and use in huge impact and produce the harm to bipolar plate, have suitable pretightning force when guaranteeing again to install the apron simultaneously.
The third technical proposal adopted by the utility model is that:
the integrated packaging mechanism of the fuel cell stack is characterized by comprising the shell structure for packaging the fuel cell stack, a stack cell and a manipulator; a clamping jaw structure is arranged at the end part of the manipulator; the electric pile electric core is clamped by a clamping jaw structure on the manipulator and is transferred into a shell structure for packaging the fuel cell pile to realize packaging;
the clamping jaw structure comprises a guide rail, clamping teeth and clamping plates, the clamping teeth comprise lower clamping teeth fixed at the bottom end of the guide rail and upper clamping teeth arranged on the upper part of the guide rail in a sliding manner, and the clamping plates comprise two clamping teeth symmetrically arranged on two sides of the guide rail; the upper clamping teeth and the clamping plates are driven by a cylinder body arranged on the guide rail; the upper clamping teeth are driven by the cylinder body and matched with the lower clamping teeth to clamp along the stacking direction of the fuel cell, and the two clamping plates are driven by the cylinder body to clamp the side surface of the fuel cell stack.
Furthermore, the guide rail is arranged on a guide plate, and the end part of a handle of the manipulator is hinged with the side wall of the guide plate; the lower clamping teeth are fixed at the bottom end of the guide plate.
Furthermore, the upper clamping teeth and the lower clamping teeth are plate teeth which are clamped by matching with two outer end faces of the fuel cell stack.
Furthermore, the upper clamping teeth and the lower clamping teeth are plate teeth which are clamped by matching with clamping tooth grooves arranged on two outer end faces of the fuel cell stack.
Further, the width of the clamping plate is smaller than the height of the guide surface of the pile.
The method for packaging by adopting the integrated packaging mechanism of the fuel cell stack comprises the following operation steps:
s1, pressing a plurality of stacked battery monomers into a fuel battery stack by adopting a stack pre-tightening press;
s2, the manipulator is driven to enable the clamping jaw structure at the end of the manipulator to clamp the top end, the bottom end and the side surface of the fuel cell stack, the pre-tightening press is gradually unloaded, the pressure of the fuel cell stack is gradually transferred to the clamping jaw structure, and the clamping process is completed;
s3, transferring the clamped electric core of the electric pile by a manipulator, and putting the electric core into the shell structure for packaging the fuel cell pile;
s4, internal wiring processing is carried out on the cell of the galvanic pile;
and S5, covering the cover plate, and fastening the cover plate with the main shell and the end plate to complete the packaging.
The utility model has the advantages that:
the encapsulation of comparing current fuel cell stack contains the independent encapsulation of pile and casing encapsulation afterwards usually, the utility model discloses fuel cell stack encapsulation has cancelled the independent encapsulation of pile with shell structure, will encapsulate and the shell integration, has reduced assembly process, has simplified the structure, has effectively reduced fuel cell's volume and weight simultaneously. By arranging the tensioning structure, the integration degree of the shell structure for packaging the fuel cell stack is high; when the fuel cell stack is assembled, the pressing plate is driven to be close to the end plate by the movement of the guide column, and the tensioning spring is contracted, so that the space in the length direction in the main shell is increased, and the operation is convenient; the connecting structure of the pressing plate and the end plate is composed of the guide post, the limiting bolt and the tensioning spring, the parallelism of the pressing plate and the electric pile cell tail end supporting seat during compression and the uniformity of applying pressure to the tail plate can be effectively guaranteed, and the automatic adjustment of the expansion and contraction of the fuel cell electric pile is realized. Tensioning structure detachable structure sets up, and convenient assembly can form independent subassembly, and the maintenance and the change of the later stage electric pile electricity core of being convenient for realize the inside pressure release of fuel cell electric pile through slowly dismantling spacing bolt, realizes that the shell structure is inside to be torn open the heap.
The fuel cell stack packaging mechanism of the utility model is adopted for integrated packaging, after the stack is completed, the stack is clamped by the mechanical arm and placed into the shell structure, and is pressed by the pressing plate, each side surface of the stack can be directly contacted with the inner cavity surface of the shell structure, and the matching precision is higher; the strength of the shell is high; and because the inside of the shell structure has stronger lateral constraint on the fuel cell stack, the problems of lateral displacement and lateral deformation of the fuel cell stack in the using and transporting process are effectively avoided, the reliability is higher, the assembly precision of each part of the fuel cell stack is ensured, the parallelism of two tail plates of the fuel cell stack is ensured, the pressure application area of the tail plates is greatly increased, the force application uniformity of the cell tail plates of the fuel cell stack is obviously improved, the compression consistency of a single Gas Diffusion Layer (GDL) is ensured, and the electrical property of the fuel cell is effectively improved and enhanced.
Drawings
Fig. 1 is a schematic structural view of a housing structure for packaging a fuel cell stack according to the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 with the cover plate removed;
FIG. 3 is a side view of the structure of FIG. 2;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;
FIG. 5 is a schematic view of the tensioning arrangement of FIG. 1;
FIG. 6 is a schematic diagram of the pressing plate structure shown in FIG. 5;
fig. 7 is a schematic view of the whole structure of the fuel cell stack of the present invention after packaging;
fig. 8 is a schematic structural diagram of the cell stack in fig. 7;
fig. 9 is a schematic structural view of the integrated packaging mechanism of the fuel cell stack of the present invention;
FIG. 10 is a schematic view of the jaw configuration of FIG. 9;
the device comprises a main shell 1, a lower support panel 11, a convex surface 111, reinforcing ribs 112, a side panel 12, a side limiting surface 121, a pile guide surface 122, a rear support panel 13, a second groove 131, an integrated interface 14, a tensioning structure 2, an end plate 21, a pressing plate 22, a guide post 23, a limiting bolt 24, a tensioning spring 25, a reinforcing rib 26, a first groove 27, a spring limiting groove 28, a cover plate 3, a pile battery cell 4, a tail plate 41, a bipolar plate 42, a membrane electrode 43, a copper electrode 44, an insulating plate 45, a manipulator 5, a clamping jaw structure 6, a guide rail 61, a clamping tooth 62, a clamping tooth 621 lower clamping tooth, a clamping tooth 622 upper clamping tooth, a clamping plate 63, a cylinder 64, a 7 guide plate and a current detection module 8.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention is explained in detail below by means of specific embodiments and with reference to the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1-6, the housing structure for packaging a fuel cell stack comprises a main housing 1 with an open top end and a front end, and a tension structure 2 arranged at the front end of the main housing, wherein the tension structure can flexibly adjust and fix the fuel cell stack according to the length of the fuel cell stack in the main housing; a cover plate 3 is provided over the main housing and the tensioning arrangement. The main shell 1, the tensioning structure 2 and the cover plate 3 are assembled together to realize the packaging of the fuel cell stack.
The tensioning structure 2 comprises an end plate 21, a pressure plate 22 and a guiding telescopic structural part; the end plate 21 is fixedly connected with the front end of the main shell 1 through a fastening bolt, the pressure plate 22 is movably arranged on the inner side of the end plate 21 through an elastic guiding telescopic structural part, the elastic guiding telescopic structural part comprises a guide post 23 arranged on the end plate 21, one end of the guide post 23 penetrates out of the end plate 21, the other end of the guide post 23 is fixedly connected with the pressure plate 22, and a plurality of tensioning springs 25 are arranged between the pressure plate 22 outside the guide post and the end plate 21; and a limit bolt 24 is arranged in the middle of the end plate and the pressing plate, one end of the limit bolt is in threaded connection with the pressing plate, and the other end of the limit bolt penetrates out of the end plate. The other end of the guide post is fixedly connected with the pressing plate, a spring limiting groove 28 is formed in the side wall of the pressing plate outside the guide post, one end of the tensioning spring 25 is arranged in the spring limiting groove, the other end of the tensioning spring is connected with the inner wall of the end plate, and the tensioning springs are arranged on the side wall of the pressing plate at uniform intervals.
The main casing 1 comprises a lower support panel 11, a side panel 12 and a rear support panel 13, wherein the side panel comprises a side limiting surface 121 and a pile guide surface 122; a gas-liquid exchange port is arranged on the rear supporting panel 13, and an integrated interface 14 is connected at the gas-liquid exchange port outside the rear supporting panel.
The cover plate 3 is assembled and fixed with the end plate 21 and the top end of the main housing 1 through fastening bolts. When simple maintenance and overhaul of the electric core of the pile are carried out, the cover plate 3 is directly disassembled to carry out main problem inspection. If the pile needs to be disassembled, the cover plate needs to be disassembled, and then the fastening bolts on the end plate 21 are gradually and slowly disassembled, and the automatic disassembly on a special disassembly press is supported.
Above-mentioned guide post and end plate cooperation can effectively guarantee the depth of parallelism of clamp plate and end plate, and the clamp plate can have better depth of parallelism with main casing body back supporting panel to guarantee that pile electricity core upper and lower two tailboards 41 have better depth of parallelism, make monolithic Gas Diffusion Layer (GDL) have better compression uniformity, effectively improve the battery performance.
A reinforcing rib 26 is arranged on the side wall of the pressing plate 22 opposite to the end plate 21; a first groove 27 is provided on a side wall of the pressing plate 22 opposite to the inside of the main casing 1; the outer side walls of the main shell 1, the cover plate 3 and the end plate 21 are all provided with reinforcing ribs 112, and a second groove 131 is arranged on the rear support panel 13 corresponding to the first groove. The first groove 27 and the second groove 131 are vertical through grooves matched with tail plates at the front end and the rear end of the stack battery core 4.
The main shell 1 is also provided with an observation window and an air inlet and outlet hole; the observation window can observe the state of the electric pile core 4, and can carry out daily maintenance and troubleshooting under the condition of not disassembling the electric pile core; the gas inlet and outlet can be used for actively and passively discharging gas leaked from the electric core of the electric pile.
Because in the transportation and the use of fuel cell, the atress part mainly is main casing body 1, apron 3, end plate 21, according to the atress condition, can be with the main casing body 1, apron 3, the strengthening rib 112 design in the end plate 21 outside for unique strengthening rib structure, guarantee shell structure's bulk strength in the at utmost, prevent to take place to warp, the at utmost reduces the material use simultaneously, reduces product weight, reduces the cost.
By the structure, the electric pile cell 4 can be packaged after being smoothly put into the main casing body 1, the integration degree is high, and the parallelism of two tail plates of the electric pile cell 4 is ensured. According to the length of the electric pile core, the tensioning structure 2 is properly adjusted, specifically, 4 guide posts 23 are pulled to drive the pressing plate 22 to be close to the end plate 21, the tensioning spring 25 contracts, the limiting bolt is pulled out of the outer side of the end plate 21 along with the pressing plate, a larger length space is reserved in the main shell 1, and the electric pile core 4 is smoothly put in; after all the electric pile electric cores enter the main shell body 1, loosening the guide columns 23, and under the restoring force action of the tensioning springs 25 and the cooperation with the limiting bolts 24, until the limiting bolts are limited by the end plates, the pressing plate 22 is abutted against the front tail plate of the electric pile electric cores 4 under the action of the tensioning springs, and further the front and rear tail plate surfaces of the electric pile electric cores are matched with the pressing plate 22 and the rear supporting panel 13, namely the pressing plate 22 and the first grooves 27 on the side walls thereof are well contacted with the front tail plate of the electric pile electric cores 4, the rear supporting panel 13 and the second grooves 131 on the side walls thereof are well contacted with the rear tail plate of the electric pile electric cores, and at the moment, the electric pile electric cores and the main shell body are fixed; finally, the cover plate 3 is covered, and the cover plate 3 is fixedly assembled with the main casing 1 and the end plate 21 by fastening bolts.
The degree of freedom of six faces of the electric core of the electric pile is well limited by the structure, the electric pile is guaranteed to have reasonable compression force, and the electric pile is prevented from generating lateral displacement.
Example 2
As shown in fig. 7 to 8, the fuel cell stack is an integrated structure in which a plurality of stacked unit cells are packaged. Wherein, the packaging casing structure is the casing structure described in embodiment 1, and a plurality of stacked single cells are packaged in the casing to form an integrally packaged fuel cell stack.
The stack cell 4 composed of a plurality of stacked battery cells is of a conventional structure, and comprises a tail plate 41, a bipolar plate 42, a membrane electrode 43, a copper electrode 44 and an insulating plate 45, wherein two Gas Diffusion Layers (GDL) are respectively arranged on two sides of the membrane electrode.
The stacking process of the electric pile electric core is to stack and compress a tail plate 41, an insulating plate 45, a copper electrode 44, a bipolar plate 42 and a membrane electrode 43; during the compression process, the Gas Diffusion Layer (GDL) will be compressed to some extent, and the proper compression ratio and consistency of compression will have a great influence on the cell performance. The packaging structure of the fuel cell stack can ensure proper compression rate and compression consistency.
Before the galvanic pile cell is not placed, the tensioning spring force of the tensioning structure is offset by the limiting bolt 24, after the galvanic pile cell is placed, the pressure of the tensioning spring 25 is completely applied to the tail plate 41 on the front side of the galvanic pile cell, and the limiting bolt is in an unstressed state.
An elastic cushion pad is provided on the inner side wall of the main casing 1. The elastic buffer cushion can avoid the bipolar plate from directly contacting with the main shell, reduce the impact and vibration influence from the shell structure and avoid the damage to the bipolar plate.
The inner side walls of the lower supporting panel 11 and the side panels 12 are also provided with convex surfaces 111; so set up, can increase strength, guarantee the plane degree of contact surface, can avoid the inside soaking of depositing water to the pile electricity core of shell structure simultaneously.
An elastic buffer cushion is also arranged between the cover plate 3 and the electric pile core 4. So set up, can prevent to transport and use in huge impact and produce the harm to bipolar plate, have suitable pretightning force when guaranteeing again to install the apron simultaneously.
Example 3
As shown in fig. 9 to 10, the fuel cell stack integrated packaging mechanism shows a structure in which the stack cells 4 are packaged into the fuel cell stack packaging case structure of example 1. Specifically, the integrated packaging mechanism of the fuel cell stack comprises the shell structure for packaging the fuel cell stack, a stack cell 4 and a manipulator 5; the end part of the manipulator is provided with a clamping jaw structure 6, and the electric pile electric core 4 is clamped by the clamping jaw structure on the manipulator and transferred into the shell structure for packaging the fuel cell pile to realize packaging.
The clamping jaw structure 6 comprises a guide rail 61, clamping teeth 62 and clamping plates 63, wherein the clamping teeth 62 comprise lower clamping teeth 621 fixed at the bottom end of the guide rail and upper clamping teeth 622 slidably arranged at the upper part of the guide rail, and the clamping plates 63 comprise two clamping teeth symmetrically arranged at two sides of the guide rail 61; the upper clamping teeth and the clamping plates are driven by a cylinder body 64 arranged on the guide rail, and the cylinder body is a hydraulic cylinder or an air cylinder; the upper clamping teeth are driven by the cylinder body to be matched with the lower clamping teeth to clamp along the stacking direction of the fuel cell, and the two clamping plates 63 are driven by the cylinder body to clamp the side surface of the fuel cell stack.
The guide rail is arranged on a guide plate 7, and the end part of a handle of the manipulator 5 is hinged with the side wall of the guide plate 7; the lower clamping teeth are fixed at the bottom end of the guide plate. . The upper clamping teeth and the lower clamping teeth are plate teeth which are clamped by matching with clamping tooth grooves arranged on two outer end faces of the fuel cell stack.
The width of the clamping plate is less than the height of the stack guide surface 122. So set up, make things convenient for the both sides splint 63 centre gripping galvanic pile electricity core of clamping jaw structure to get into the main casing body and withdraw in a flexible way from the galvanic pile spigot surface position of the main casing body.
The method for packaging the fuel cell stack by adopting the integrated packaging mechanism of the fuel cell stack comprises the following operation steps:
s1, pressing a plurality of stacked battery monomers into a galvanic pile battery cell 4 through a galvanic pile pre-tightening press;
s2, the manipulator is driven, so that a clamping jaw structure at the end part of the manipulator clamps and assembles the galvanic pile battery cell 4 in the vertical direction; specifically, when the cell 4 of the stack is clamped, the position of the upper clamping tooth 622 on the top of the guide rail 61 is adjusted according to the height of the cell 4 of the stack, the upper clamping tooth 12 moves downwards under the driving of the cylinder body, the upper clamping tooth and the lower clamping tooth horizontally enter a clamping groove on a tail plate of the cell 4 of the stack, after the upper clamping tooth and the lower clamping tooth reach the positions, the cylinder body driving the upper clamping tooth to operate is continuously adjusted, so that the upper clamping tooth generates smaller clamping force on the cell 4 of the stack, the smaller clamping force is generally detected by a pressure sensor arranged on the inner side of the upper clamping tooth, the clamping reaches a proper position generally when the detected pressure reaches 0.1N, the pressure sensor used for detecting the clamping force on the upper clamping tooth is not shown again, and the understanding of the description by a person skilled in the art is not affected; the lateral clamping plates 63 contract in a relative motion manner under the drive of the cylinder body until the lateral clamping plates are contacted with the two sides of the electric core of the electric pile, so that the side surfaces of the electric core of the electric pile are clamped and clamped, and the electric core of the electric pile is prevented from lateral displacement in the clamping and transferring process; the pre-tightening press is gradually unloaded, so that the pressure of the stack cell 4 is gradually transferred to the upper clamping teeth and the lower clamping teeth, and the clamping process is completed;
s3, transferring the clamped electric core 4 of the stack by a manipulator, putting the electric core into the shell structure for packaging the fuel cell stack, pulling 4 guide posts 23 to drive the pressing plate 22 to move forward to be close to the end plate 21, and contracting the tension spring 25 to reserve a larger length space for the main shell 1, so that the electric core 4 of the stack can be smoothly put into the shell structure; after the electric pile electric core completely enters the main shell, the two clamping plates 63 on the clamping jaw structure 6 also enter the position of the electric pile guide surface 122 of the side panel 12 of the main shell, and the two sides of the electric pile electric core 4 gradually and completely contact with the side limiting surfaces 121; then, the guide post 23 is loosened, the tensile force of the guide post is removed, the pressing plate 22 is abutted against the front tail plate of the stack cell 4 under the action of the restoring force of the tension spring 25 and is matched with the limit bolt 24, and the front and rear end tail plate surfaces of the stack cell are further matched with the pressing plate 22 and the rear support panel 13, namely, the pressing plate 22 and the first groove 27 on the side wall thereof are contacted with the front tail plate of the stack cell 4, and the rear support panel 13 and the second groove 131 on the side wall thereof are contacted with the rear tail plate of the stack cell; then, the clamping plate 63 is loosened through cylinder body driving, meanwhile, the upper clamping teeth 622 slide along the guide rail 61 on the guide plate 7, the distance between the upper clamping teeth and the lower clamping teeth is increased, the clamping teeth also loosen the galvanic pile cell 4, clamping tooth force is completely transferred to the pressing plate 22, and the manipulator drives the clamping jaw structure 6 to be separated from the galvanic pile cell; and fixing the stack battery cell 4 in the main casing 1, finally, covering the cover plate 21, and screwing the cover plate, the main casing and the fixing bolts on the end plates to complete packaging.
The utility model discloses a 41 depth of parallelism problems of galvanic pile electricity core tailboard have fully been considered to shell structure and packaging method, make the everyone atress of monolithic gas diffusion layer even.
It should be noted that, after the stack cell is packaged in the casing structure, the current detection module 8 needs to be installed, a probe is installed on each bipolar plate 42 to detect the current, and a lead is fixed through the left side surface of the inner cavity of the main casing 1, led out from the middle part of the inner cavity, and connected to a current processor installed at the left end. The copper electrodes 44 on both sides are connected with wires, and the wires are led out from the wire port of the main shell 1, so that the direct wiring is convenient for the fuel cell to use.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (9)
1. A case structure for fuel cell stack packaging, comprising:
the top end and the front end of the main shell are arranged in an open mode;
the tensioning structure is arranged at the front end of the main shell and used for realizing adjustable fixation of the cell stack electric core in the main shell;
the cover plate is arranged above the main shell and the tensioning structure;
the main casing body, the tensioning structure and the cover plate are assembled together to package the electric core of the electric pile.
2. The fuel cell stack packaging casing structure of claim 1, wherein the tension structure comprises an end plate, a pressure plate, and a guide expansion structure; the end plate is connected with the front end of the main shell, and the pressing plate is movably arranged on the inner side of the end plate through the guide telescopic structural part; the guiding telescopic structural part is an elastic guiding telescopic structural part;
the main housing comprises a lower support panel, a side panel and a rear support panel; the side panel comprises a side limiting surface and a pile guide surface; a gas-liquid exchange port is arranged on the rear support panel, and an integrated interface is connected with the gas-liquid exchange port outside the rear support panel;
the cover plate is fixedly assembled with the end plate and the top end of the main shell.
3. The fuel cell stack packaging casing structure of claim 2, wherein the elastic guiding expansion structure comprises a guiding post disposed on the end plate, one end of the guiding post penetrates through the end plate, the other end of the guiding post is connected to the pressing plate, and a tension spring and a limit bolt are disposed between the pressing plate outside the guiding post and the end plate.
4. The fuel cell stack packaging casing structure of claim 3, wherein the other end of the guide post is fixedly connected to the pressing plate, a spring limiting groove is provided on a side wall of the pressing plate outside the guide post, one end of the tension spring is provided in the spring limiting groove, and the other end of the tension spring is connected to an inner wall of the end plate.
5. The fuel cell stack-packaging casing structure according to claim 2, wherein a reinforcing rib is provided on a side wall of the pressure plate on the side opposite to the end plate; a first groove is formed in the side wall of the side, opposite to the inner part of the main shell, of the pressing plate; and a second groove is arranged on the rear support panel corresponding to the first groove.
6. A fuel cell stack comprising a plurality of stacked cells, wherein the plurality of stacked cells are housed in the fuel cell stack housing structure of any one of claims 1-5.
7. A fuel cell stack integrated packaging mechanism, which is characterized by comprising the shell structure for packaging the fuel cell stack, a stack cell and a manipulator, wherein the shell structure for packaging the fuel cell stack is defined in any one of claims 1 to 5; a clamping jaw structure is arranged at the end part of the manipulator; the electric pile electric core is clamped by a clamping jaw structure on the manipulator and is transferred into a shell structure for packaging the fuel cell pile to realize packaging;
the clamping jaw structure comprises a guide rail, clamping teeth and clamping plates, the clamping teeth comprise lower clamping teeth fixed at the bottom end of the guide rail and upper clamping teeth arranged on the upper part of the guide rail in a sliding manner, and the clamping plates comprise two clamping teeth symmetrically arranged on two sides of the guide rail; the upper clamping teeth and the clamping plates are driven by a cylinder body arranged on the guide rail; the upper clamping teeth are matched with the lower clamping teeth in a cylinder body driving mode to clamp along the stacking direction of the fuel cells, and the two clamping plates are driven by the cylinder body to clamp the side faces of the electric core of the galvanic pile.
8. The integrated packaging mechanism of claim 7, wherein the guide rail is arranged on a guide plate, and the end of the handle of the manipulator is hinged with the side wall of the guide plate; the lower clamping teeth are fixed at the bottom end of the guide plate.
9. The integrated packaging mechanism of claim 7, wherein the upper clamping teeth and the lower clamping teeth are plate teeth that are clamped by matching with two outer end faces of the cell stack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221127290.2U CN217468512U (en) | 2022-05-11 | 2022-05-11 | Shell structure for packaging fuel cell stack, fuel cell stack and integrated packaging mechanism |
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| CN202221127290.2U CN217468512U (en) | 2022-05-11 | 2022-05-11 | Shell structure for packaging fuel cell stack, fuel cell stack and integrated packaging mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498236A (en) * | 2022-11-21 | 2022-12-20 | 佛山市清极能源科技有限公司 | Fuel cell fixing and assembling device and telescopic connecting rod used by same |
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2022
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498236A (en) * | 2022-11-21 | 2022-12-20 | 佛山市清极能源科技有限公司 | Fuel cell fixing and assembling device and telescopic connecting rod used by same |
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