CN215070074U

CN215070074U - Clamping device for galvanic pile assembly

Info

Publication number: CN215070074U
Application number: CN202121520485.9U
Authority: CN
Inventors: 施晖; 孟维志; 石伟玉; 杨曦
Original assignee: Shanghai Jieqing Technology Co Ltd
Current assignee: Shanghai Hydrogen Propulsion Technology Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-07
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a clamping device for a galvanic pile assembly, which comprises a first end plate and a second end plate which are oppositely arranged in a first direction, wherein the first end plate and the second end plate are connected through a connecting assembly so as to keep a fixed distance between the first end plate and the second end plate, and the galvanic pile assembly to be tested is positioned between the first end plate and the second end plate; still include drive assembly, drive assembly install in first end plate, drive assembly includes the driving piece, the driving piece can be in the first direction motion, just the driving piece compresses tightly through pressure sensor the electric pile subassembly that awaits measuring. In the above scheme, the pressure sensor between the driving piece and the electric pile assembly to be detected can detect the clamping force so as to accurately know the specific value of the applied clamping force, and can also accurately detect the dynamic change of the clamping force, thereby providing a detection condition for acquiring the relation between the clamping force and the performance of the fuel cell electric pile.

Description

Clamping device for galvanic pile assembly

Technical Field

The utility model relates to a fuel cell detects technical field, concretely relates to clamping device for galvanic pile subassembly.

Background

When developing a fuel cell, the impact of the pressing force of the stack assembly and the change of the pressing force on the performance of the stack assembly need to be considered.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a clamping device for galvanic pile subassembly can detect the size of the applied packing force through pressure sensor, can also accurately detect the dynamic change of clamp force simultaneously, provides the detection condition for acquireing the relation between clamp force and the fuel cell galvanic pile performance.

In order to solve the technical problem, the utility model provides a clamping device for a pile assembly, which comprises a first end plate and a second end plate which are oppositely arranged in a first direction, wherein the first end plate and the second end plate are connected through a connecting component so as to keep a fixed distance therebetween, and the pile assembly to be tested is positioned between the first end plate and the second end plate; still include drive assembly, drive assembly install in first end plate, drive assembly includes the driving piece, the driving piece can be in the first direction motion, just the driving piece compresses tightly through pressure sensor the electric pile subassembly that awaits measuring.

When testing, can install the galvanic pile subassembly that awaits measuring between first end plate and second end plate, then exert the clamp force through the driving piece to detect the size of this clamp force through being located the pressure sensor between driving piece and the galvanic pile subassembly that awaits measuring, so that accurately learn the concrete value of exerted clamp force, simultaneously, can also accurately detect the dynamic change of clamp force, provide the detection condition for obtaining the relation between clamp force and the fuel cell galvanic pile performance.

Optionally, the driving member includes a rod portion, at least a partial rod section of the rod portion is provided with an external thread, and the rod portion is in threaded connection with the first end plate.

Optionally, the first end plate is provided with a nut member, the shank being in threaded connection with the nut member.

Optionally, the nut member is provided with a stepped hole, the stepped hole includes a small-diameter hole portion and a large-diameter hole portion in a direction approaching the second end plate, at least a partial hole section of the small-diameter hole portion is provided with an internal thread for being screwed with the rod portion, and a partial portion of the pressure sensor is located in the large-diameter hole portion.

Optionally, the driving member further comprises a head connected to the stem, the head having a radial dimension greater than the stem; the elastic part is in a compression state, one end of the elastic part is abutted against the first end plate, and the other end of the elastic part is abutted against the head.

Optionally, the elastic member is a spring, and the spring housing is mounted to the rod portion.

Optionally, the device further comprises a floating plate, and the pressure sensor presses the stack component to be tested through the floating plate.

Optionally, the connecting assembly comprises a plurality of bolts, each bolt being screwed with at least one locking nut; at least part of the bolts, the locking nuts can be matched with the bolt heads of the bolts to define the position of one of the first end plate and the second end plate, and two adjacent locking nuts can define the position of the other of the first end plate and the second end plate.

Optionally, the electric pile assembly to be tested includes a first insulating plate, a first current collecting plate, an electric pile, a second current collecting plate and a second insulating plate, which are sequentially arranged in the first direction.

Optionally, the number of the driving assemblies is multiple.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a clamping device for a stack assembly according to the present invention;

fig. 2 is a connection structure diagram of the driving unit of fig. 1 with a first end plate, a floating plate, a first insulating plate, and a first current collecting plate.

The reference numerals in fig. 1-2 are illustrated as follows:

1 a first end plate, 11 nut members, 111 small-diameter hole portions, 112 large-diameter hole portions, 2 a second end plate,

3 connecting assemblies, 31 bolts, 32 locking nuts, 4 pile assemblies to be tested, 41 first insulating plates, 42 first current collecting plates, 43 pile, 44 second current collecting plates, 45 second insulating plates, 5 driving assemblies, 51 driving pieces, 511 rod parts, 512 head parts, 52 elastic pieces, 6 floating plates and 7 pressure sensors.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function and do not denote any particular limitation in order and/or importance.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

Referring to fig. 1-2, fig. 1 is a schematic structural view of an embodiment of a clamping device for a stack assembly according to the present invention, and fig. 2 is a structural view of a connection structure between a driving assembly and a first end plate, a floating plate, a first insulation plate, and a first current collecting plate in fig. 1.

As shown in fig. 1, the utility model provides a clamping device for a stack assembly, which comprises a first end plate 1 and a second end plate 2 which are oppositely arranged in a first direction, wherein the first end plate 1 and the second end plate 2 are connected through a connecting component 3 so as to keep a fixed distance therebetween, and a stack assembly 4 to be tested is positioned between the first end plate 1 and the second end plate 2; the testing device further comprises a driving assembly 5, the driving assembly 5 is installed on the first end plate 1, the driving assembly 5 comprises a driving piece 51, the driving piece 51 can move in the first direction, and the driving piece 51 compresses the cell stack assembly 4 to be tested through the pressure sensor 7.

By adopting the scheme, when testing, the electric pile assembly 4 to be tested can be installed between the first end plate 1 and the second end plate 2, then the clamping force is exerted through the driving part 51, and the magnitude of the clamping force is detected through the pressure sensor 7 positioned between the driving part 51 and the electric pile assembly 4 to be tested, so that the specific value of the exerted clamping force can be accurately known, meanwhile, the dynamic change of the clamping force can be accurately detected, and the detection condition is provided for acquiring the relation between the clamping force and the fuel cell electric pile performance.

The "first direction" is actually the assembling direction of the fuel cell stack, i.e. the stacking direction of the components in the fuel cell stack, and is reflected in fig. 1, and the "first direction" is a vertical direction, and the driving member 51 can move up and down along the vertical direction, so as to adjust the magnitude of the clamping force.

It should be noted that the present invention provides only a clamping device, which can detect the clamping force and reflect the dynamic change of the clamping force in real time, but the dynamic change is related to which kind of parameters, and needs to be determined by combining with the specific test condition.

The configuration of the driving assembly 5 may be selected as long as the driving member 51 can be driven to move in the first direction. For example, the driving assembly 5 may be a driving cylinder in the form of an air cylinder, a hydraulic oil cylinder, or the like, a piston rod of the driving cylinder being capable of directly generating linear displacement, and the aforementioned driving member 51 may be a piston rod of the driving cylinder; alternatively, the driving assembly 5 may include a motor, and in this case, a transmission mechanism needs to be further provided to convert the rotational displacement output by the motor into a linear displacement, and the transmission mechanism may specifically be a rack-and-pinion mechanism, a combination mechanism of a lead screw and a lead screw nut, and the like, in this case, the driving member 51 may be a rack or a lead screw nut.

Both of the above-mentioned two forms of drive assemblies 51 are self-acting drive elements, which are relatively automated, and in addition, manually driven components, such as a screw and nut arrangement, may be provided, in which case the adjustment of the clamping force may be achieved by manually (or by means of a wrench or other like operating tool) rotating the screw, which arrangement may be relatively simple.

In the embodiment of the drawings, as shown in fig. 2, the driving assembly 5 may be a manually adjustable structural member, and specifically, the driving member 51 may include a rod portion 511, at least a partial rod section of the rod portion 511 may be provided with an external thread, the rod portion 511 may be screwed with the first end plate 1, and due to the fixed position of the first end plate 1, when the driving member 51 is rotated, the screwing depth of the driving member 51, and thus the clamping force, may be adjusted.

For cooperation with the driver 51, the first end plate 1 may be directly provided with a threaded hole, or the first end plate 1 may be provided with a nut member 11, and then the rod portion 511 is screwed with the nut member 11. The nut element 11 is a nut-like part which is provided with an axially extending through-hole, at least a partial bore section of which may be provided with an internal thread.

In detail, with continued reference to fig. 2, the through hole may be a stepped hole, and the stepped hole may include a small-diameter hole portion 111 and a large-diameter hole portion 112 in a direction close to the second end plate 2, at least a partial hole section of the small-diameter hole portion 111 may be provided with an internal thread for screwing with the rod portion 511, and a partial portion of the pressure sensor 7 may be located in the large-diameter hole portion 112.

In this way, the nut member 11 can be screwed with the driving member 51, and the large-diameter hole 112 can also be used for positioning the pressure sensor 7 to avoid the pressure sensor 7 from moving to affect the application and measurement of the clamping force, and meanwhile, the positioning is an active positioning, the pressure sensor 7 does not need to be fixedly connected with other components (such as the driving member 51), and the installation of the pressure sensor 7 can be simplified.

It should be noted that if the nut member 11 does not adopt the above-described structure including the large-diameter hole portion 112, it is necessary to adopt another structure for positioning the pressure sensor 7 to ensure that the pressure sensor 7 can be used normally, for example, the pressure sensor 7 may be fixed to the driving member 51, or a groove body may be provided in the floating plate 6 mentioned later to position the pressure sensor 7.

Further, the driving member 51 may further include a head 512 connected to the shaft 511, and the head 512 may have a radial dimension larger than the shaft 511; an elastic member 52 may be further included, and one end of the elastic member 52 may abut against the first end plate 1 (specifically, the nut member 11 in the drawing), and the other end may abut against the head 512 to tightly press the driving member 51, so as to play a role of preventing the driving member 51 from being loosened, thereby reducing the decrease of the pressing force caused by the torque attenuation of the driving member 51.

In practice, the shaft portion 511 and the head portion 512 may be a unitary structure, such as a conventional bolt, and the head portion 512 is an operating end of the driving member 51 and is used for cooperating with a wrench or the like to drive the driving member 51 to rotate.

The elastic member 52 may have various structures as long as the above technical effects can be achieved. For example, the elastic member 52 may be a spring, the spring may be externally fitted to the rod portion 511, and the spring may be a rectangular spring, a disc spring, or the like; alternatively, the elastic member 52 may be an elastic pad or the like.

The pressure sensor 7 can be directly pressed with the electric pile component 4 to be tested or indirectly pressed with the electric pile component 4 to be tested. When the indirect pressing scheme is adopted, the device can further comprise a floating plate 6, and the pressure sensor 7 can press the stack component 4 to be tested through the floating plate 6, so that the pressing force applied by the pressure sensor 7 can be diffused, and the pressing force can be distributed on the surface of the stack component 4 to be tested relatively uniformly.

The number of the pressure sensors 7 and the number of the driving assemblies 5 may be one or more, and may be determined according to actual use requirements. In the embodiment of the present invention, it is preferable to adopt a plurality of solutions, in which case, the driving force applied by each driving assembly 5 may be different, so as to apply different pressing forces according to different areas, for example, the sealing area, the distribution area, the active area, etc. of the stack may be configured with different pressing forces respectively.

The connecting assembly 3 may comprise a plurality of bolts 31, each bolt 31 may be screwed with at least one locking nut 32; at least some of the bolts 31, the locking nuts 32 cooperating with the bolt heads of the bolts 31 can define the position of one of the first and second end plates 1, 2 (the position of the first end plate 1 in the drawings), and two adjacent locking nuts 32 can define the position of the other of the first and second end plates 1, 2 (the position of the second end plate 2 in the drawings).

Adopt this kind of structure, coupling assembling 3's dismouting can be easy relatively, can conveniently be according to the interval of the first end plate 1 of the size adjustment of the galvanic pile subassembly 4 that awaits measuring and second end plate 2, make the utility model provides a clamping device for galvanic pile subassembly can possess better commonality.

In addition to the above solutions, the connecting assembly 3 may also adopt other forms of structural members, such as a screw rod adjusting mechanism.

The structure of the to-be-tested stack assembly 4 can be designed with reference to a stack assembly in actual use, and taking fig. 1 as a perspective view, the to-be-tested stack assembly 4 can include a first insulating plate 41, a first current collecting plate 42, a stack 43, a second current collecting plate 44 and a second insulating plate 45 which are sequentially arranged in a first direction, and when the driving assembly 5 is pressed, the first insulating plate 41, the first current collecting plate 42, the stack 43, the second current collecting plate 44, the second insulating plate 45 and other components can be closely attached together.

The utility model provides a clamping device presss from both sides tight back with predetermined packing force (adjust as required) to survey galvanic pile subassembly 4, can carry out relevant experimental test to the galvanic pile subassembly 4 that awaits measuring, this in-process, because temperature variation, the influence of various factors such as moment of torsion decay, the packing force of galvanic pile subassembly also can produce dynamic change along with outside boundary condition, through the range of change of pressure in the 7 real-time supervision test process of pressure sensor, can provide the reference data of packing force for follow-up fuel cell product state, thereby make things convenient for subsequent product design.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The clamping device for the stack assembly is characterized by comprising a first end plate (1) and a second end plate (2) which are oppositely arranged in a first direction, wherein the first end plate (1) and the second end plate (2) are connected through a connecting assembly (3) so as to keep a fixed distance between the first end plate and the second end plate, and a stack assembly (4) to be tested is positioned between the first end plate (1) and the second end plate (2);

still include drive assembly (5), drive assembly (5) install in first end plate (1), drive assembly (5) are including driving piece (51), driving piece (51) can be in the first direction motion, just driving piece (51) compress tightly through pressure sensor (7) await measuring stack subassembly (4).

2. The clamping device for a stack assembly according to claim 1, characterized in that the driving member (51) comprises a rod portion (511), at least a partial rod section of the rod portion (511) is provided with an external thread, and the rod portion (511) is in threaded connection with the first end plate (1).

3. The clamping device for a stack assembly according to claim 2, characterized in that the first end plate (1) is provided with a nut member (11), the shank portion (511) being screwed with the nut member (11).

4. The clamping device for a stack assembly according to claim 3, wherein the nut member (11) is provided with a stepped hole including a small-diameter hole portion (111) and a large-diameter hole portion (112) in a direction close to the second end plate (2), at least a partial hole section of the small-diameter hole portion (111) is provided with an internal thread for screw-coupling with the rod portion (511), and a part of the pressure sensor (7) is located in the large-diameter hole portion (112).

5. The clamping device for a galvanic pile assembly according to claim 2, characterized in that the driving member (51) further comprises a head portion (512) connected to the shaft portion (511), the head portion (512) having a radial dimension larger than the shaft portion (511);

the compression-type end plate further comprises an elastic piece (52) in a compression state, one end of the elastic piece (52) abuts against the first end plate (1), and the other end of the elastic piece (52) abuts against the head portion (512).

6. The clamping device for a stack assembly according to claim 5, wherein the elastic member (52) is a spring, and the spring is housed in the rod portion (511).

7. The clamping device for stack assemblies according to any one of claims 1-6, further comprising a floating plate (6), wherein the pressure sensor (7) presses the stack assembly (4) to be tested through the floating plate (6).

8. The clamping device for a galvanic pile assembly according to any one of claims 1 to 6, characterized in that the connection assembly (3) comprises a plurality of bolts (31), each bolt (31) being screwed with at least one locking nut (32);

at least part of the bolts (31), the locking nuts (32) can define the position of one of the first end plate (1) and the second end plate (2) by matching the bolt heads of the bolts (31), and the adjacent two locking nuts (32) can define the position of the other of the first end plate (1) and the second end plate (2).

9. The clamping device for a stack assembly according to any one of claims 1 to 6, wherein the stack assembly (4) to be tested comprises a first insulating plate (41), a first current collecting plate (42), a stack (43), a second current collecting plate (44) and a second insulating plate (45) which are arranged in sequence in the first direction.

10. The clamping device for a galvanic pile assembly according to any one of claims 1 to 6, characterized in that the number of the driving assemblies (5) is plural.