A proton exchange membrane fuel cell stack assembly

Abstract

The application relates to a proton exchange membrane fuel cell stack assembling device, which comprises a base, a plurality of limiting assemblies movably arranged on the base, and an assembling space for assembling the proton exchange membrane fuel cell stack formed by the limiting assemblies and the base; the limiting assembly comprises a limiting strip, an embedded part, a support and a locking part; the limiting strip is fixed with the embedded part, and the limiting strip has an assembling surface for limiting the proton exchange membrane fuel cell stack; the support is slidably connected with the base; a through hole matched with the embedded part and a first gap communicated with the through hole are arranged on the support; a groove matched with the first gap is arranged on the embedded part; the embedded part extends into the through hole and has at least a butt joint state corresponding to the groove and the first gap; the locking part extends to form a protruding part matched with the groove and the first gap; when the locking part is fixed with the support, the protruding part is embedded into the groove and the first gap to limit the movement between the embedded part and the support.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell, in particular to a kind of proton exchange membrane fuel cell stack assembly device. BACKGROUND

[0002] Proton exchange membrane fuel cell core component stack is composed of several single cells, each single cell is composed of membrane electrode and cathode plate, anode plate, and with proton exchange membrane stack gradually developing towards large power, now commercial stack is usually composed of several hundred single cells in series, the voltage of one or a few single cells is too low, which causes poor uniformity of stack, limits the loading range of stack current, directly affects the specific power of stack, and further affects the cost of stack.The uniformity of stack is not only related to the uniformity of material, the uniformity of parts and the operation process, but also closely related to the stack assembly process, and the poor uniformity of stack assembly level also leads to the non-universality of fuel cell system design debugging parameters, which brings difficulties to the commercialization of fuel cell.

[0003] The stack assembly device described in patent CN201510839778.6 is an assembly frame with the same size as the stack, and the fixed frame is fixed to the bottom plate by screws at the bottom, and is locked by a limiting frame at the middle and upper part. This method has narrow adaptation range and cannot be compatible with different sizes of stacks, and the limiting parts need to be disassembled after each stack assembly is completed to perform stack packaging operation, which has the risk of poor assembly uniformity. SUMMARY

[0004] Therefore, the present application provides a proton exchange membrane fuel cell stack assembly device for rapid reuse and improves assembly efficiency.

[0005] In order to achieve the above purpose, the technical solution of the present application solves the technical problem by providing a proton exchange membrane fuel cell stack assembly device, which comprises: a base, a plurality of limiting components, a plurality of limiting components movably arranged on the base, and a plurality of limiting components and the base form an assembly space for assembling proton exchange membrane fuel cell stack; the limiting component includes a limiting strip, an embedded part, a support and a locking part, the limiting strip is fixed with the embedded part, the limiting strip has an assembly surface for limiting proton exchange membrane fuel cell stack, the support is slidably connected with the base, the support is provided with a through hole matched with the embedded part and a first gap communicated with the through hole, the embedded part is provided with a groove matched with the first gap, the embedded part extends into the through hole and has at least a corresponding docking state of the groove and the first gap, the locking part extends to form a protruding part matched with the groove and the first gap, and when the locking part is fixed with the support, the protruding part is embedded in the groove and the first gap to limit the relative movement between the embedded part and the support.

[0006] Further, the locking piece comprises the protruding part, a locking plate and a positioning key, the protruding part is fixed on the locking plate, the locking plate is provided with an inner recess, the positioning key comprises a first part matched with the inner diameter of the inner recess and a second part with a width larger than the inner diameter of the inner recess, the first part can be arranged in the recess and bolted with the support, when the first part is bolted with the support, the second part abuts against the side of the locking plate away from the support.

[0007] Further, the limiting strip is arranged along the vertical direction and fixed with the embedding part, the side of the limiting strip away from the embedding part forms the assembly surface.

[0008] Further, the embedding part is fixed with the limiting strip on one side, the embedding part is provided with a pull ring on the side away from the limiting strip, and the pull ring is hinged with the embedding part.

[0009] Further, the support comprises a bottom plate and a main body, the bottom plate is slidingly connected with the base, the main body is fixed on the bottom plate, and the through hole and the first notch are arranged on the main body.

[0010] Further, the base is provided with a sliding groove, the bottom plate is provided with a plurality of fixing holes, a plurality of bolts are arranged in the fixing holes, one end of the bolt is embedded in the sliding groove, and the bolt is rotated to relatively fix the bottom plate and the base.

[0011] Further, the through hole is arranged on the main body along the horizontal direction, the through hole is provided with a second notch on the side wall of the end away from the limiting strip for accommodating the pull ring, and the pull ring is used to drive the limiting strip to separate from the stack.

[0012] Further, the groove is arranged on the top of the embedding part.

[0013] Compared with the prior art, the proton exchange membrane fuel cell stack assembly device provided by the application has the following beneficial effects:

[0014] The proton exchange membrane fuel cell stack assembly device provided by the application can complete the limiting and releasing of the stack by only disassembling and assembling the locking piece when repeating the stack assembly operation, without adjusting the tool precision, thereby shortening the stack assembly tool adjustment time, improving the tool repeated positioning precision, and being simple to operate and reliable in positioning. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The cross-sectional view of the proton exchange membrane fuel cell stack assembly device provided by the application is shown in the figure;

[0016] Figure 2 For Figure 1 An exploded schematic view of the limiting assembly;

[0017] In the figure: 1 - base, 11 - sliding groove, 2 - limiting assembly, 21 - limiting strip, 22 - embedded part, 221 - groove, 222 - pull ring, 23 - support, 231 - through hole, 232 - first notch, 233 - bottom plate, 234 - main body, 235 - second notch, 24 - locking part, 241 - protrusion, 242 - locking plate, 242a - inner notch, 243 - positioning key. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0019] Please refer to Figure 1 , Figure 2 The first embodiment of the present application provides a proton exchange membrane fuel cell stack assembly device, which comprises a base 1 and a plurality of limiting assemblies 2. The limiting assemblies 2 are movably arranged on the base 1, and the limiting assemblies 2 and the base 1 jointly form an assembly space for assembling a proton exchange membrane fuel cell stack.

[0020] Since the limiting assemblies 2 are movably arranged on the base 1, the space between the limiting assemblies 2 can be adjusted to meet the assembly of proton exchange membrane fuel cell stacks of different sizes.

[0021] Specifically, a plurality of sliding grooves 11 are arranged on the base 1 along the longitudinal and transverse directions, and the limiting assemblies 2 are partially embedded in the sliding grooves 11. The limiting assemblies 2 can slide along the sliding grooves 11 and stop at any position within the sliding range. During use, the limiting assemblies 2 can be driven to move along the sliding grooves 11 according to the requirements, so as to adjust the distance between the limiting assemblies 2 and adapt to the assembly of proton exchange membrane fuel cell stacks of various sizes.

[0022] Specifically, the limiting assembly 2 comprises a limiting strip 21, an embedding piece 22, a supporting piece 23 and a locking piece 24, the limiting strip 21 is fixed with the embedding piece 22, the limiting strip 21 has an assembly surface for limiting a proton exchange membrane fuel cell stack, the supporting piece 23 is in sliding connection with the base 1, the supporting piece 23 is provided with a through hole 231 matched with the embedding piece 22 and a first notch 232 in communication with the through hole 231, the embedding piece 22 is provided with a groove 221 matched with the first notch 232, the embedding piece 22 extends into the through hole 231 and has at least a butt joint state corresponding to the groove 221 and the first notch 232, the locking piece 24 extends to form a protruding part 241 matched with the groove 221 and the first notch 232, when the locking piece 24 is fixed with the supporting piece 23, the protruding part 241 is embedded in the groove 221 and the first notch 232 to limit the relative movement between the embedding piece 22 and the supporting piece 23.

[0023] In use, the supporting piece 23 is moved to a suitable position, the embedding piece 22 is embedded from the through hole 231 and is moved in the through hole 231 to make the embedding piece 22 reach the butt joint state, the protruding part 241 is embedded in the groove 221 and the first notch 232, and the locking piece 24 is fixed with the supporting piece 23, so that the embedding piece 22 is relatively fixed with the supporting piece 23.

[0024] Further, the limiting strip 21 is in a strip shape, the limiting strip 21 is arranged in a vertical direction and is fixed with the embedding piece 22. The limiting strip 21 is formed with the assembly surface on a side away from the embedding piece 22.

[0025] The embedding piece 22 is in a column shape, one side of the embedding piece 22 is fixed with the limiting strip 21, a pull ring 222 is arranged on a side of the embedding piece 22 away from the limiting strip 21, the pull ring 222 is hinged with the embedding piece 22, and the pull ring 222 can facilitate an operator to move the embedding piece 22.

[0026] To facilitate the fixing and dismounting of the locking piece 24, the groove 221 is arranged on a top of the embedding piece 22.

[0027] Further, the supporting piece 23 comprises a bottom plate 233 and a main body 234, the bottom plate 233 is in sliding connection with the base 1, the main body 234 is fixed on the bottom plate 233, and the through hole 231 and the first notch 232 are arranged on the main body 234. To facilitate the fixing and dismounting of the locking piece 24, the first notch 232 is arranged on a top of the main body 234.

[0028] Further, a plurality of fixing holes are formed in the bottom plate 233, and a plurality of bolts are arranged in the fixing holes, one end of the bolt is embedded in the sliding groove 11. When the support 23 needs to be moved, the bolt is rotated, the bolt is out of contact with the bottom of the sliding groove 11, and the bottom plate 233 can slide relative to the base 1; when the support 23 is moved to the appropriate position, the bolt is tightened, and the bottom plate 233 is fixed relative to the base 1.

[0029] Further, the through hole 231 is formed in the main body 234 in the horizontal direction, and a second notch 235 for accommodating the pull ring 222 is formed in the side wall of the through hole 231 away from the limiting strip 21. When the embedded part 22 is fixed with the support 23, the pull ring 222 can be rotated to enter the second notch 235, so that the pull ring 222 does not protrude relative to the embedded part 22, affecting the subsequent operation.

[0030] Further, the locking part 24 includes the protruding part 241, the locking plate 242, and the positioning key 243, the protruding part 241 is fixed on the locking plate 242, the locking plate 242 is provided with an inner notch 242a, the positioning key 243 includes a first part matched with the inner diameter of the inner notch 242a and a second part with a width greater than the inner diameter of the inner notch 242a, the first part can be arranged in the notch 242a and bolted with the support 23, when the first part is bolted with the support 23, the second part abuts with the side of the locking plate 242 away from the support 23. The second part can press the locking plate 242, so that the locking plate 242 is fixed relative to the support 23.

[0031] In use, the support 23 is moved to the appropriate position, the bolt on the bottom plate 233 is rotated, the bolt is in contact with the bottom of the sliding groove 11, the friction is increased, the bottom plate 233 is relatively fixed with the base 1, then the embedded part 22 is embedded from the through hole 231 and moved in the through hole 231, so that the embedded part 22 reaches the docking state, the protruding part 241 is embedded in the groove 221 and the first notch 232, and the first part of the positioning key 243 is inserted along the inner notch 242a and is bolted with the support 23; thus the quick building of the proton exchange membrane fuel cell stack assembly device is realized. After the stack assembly is completed, the first part of the positioning key 243 is loosened, the built-in spring 244 lifts the locking part 24, the pull ring 222 is pulled to release the stack limiting, at this time the stack and the limiting part will have a certain gap, and the assembled stack is removed from the top of the tool by a mechanical hand or a lifting device. When the stack assembly operation is repeated, only the locking part 24 is disassembled and installed to complete the limiting and release of the stack, and the tool precision does not need to be adjusted.

[0032] The advantages of the present application are:

[0033] The proton exchange membrane fuel cell stack assembly device provided by the present application can complete the limiting and release of the stack by only disassembling and installing the locking part when the stack assembly operation is repeated, without the need to adjust the tool precision, shorten the stack assembly tool adjustment time, improve the tool repeated positioning precision, and is simple to operate and reliable in positioning.

[0034] The specific embodiments of the present application described above do not constitute a limitation on the protection scope of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application should be included in the protection scope of the present application.

Claims

1. A proton exchange membrane fuel cell stack assembly apparatus, characterized by, The application relates to a proton exchange membrane fuel cell stack assembling device, which comprises a base, a plurality of limiting components movably arranged on the base and forming an assembling space for assembling the proton exchange membrane fuel cell stack with the base, a limiting strip, an embedded part, a supporting part and a locking part, the limiting strip is fixed with the embedded part, the limiting strip has an assembling surface for limiting the proton exchange membrane fuel cell stack, the supporting part is slidably connected with the base, the supporting part is provided with a through hole matched with the embedded part and a first gap communicated with the through hole, the embedded part is provided with a groove matched with the first gap, the embedded part extends into the through hole and has at least a butt joint state corresponding to the groove and the first gap, the locking part extends to form a protruding part matched with the groove and the first gap, and the protruding part is embedded into the groove and the first gap to limit the relative movement between the embedded part and the supporting part when the locking part is fixed with the supporting part.

2. The proton exchange membrane fuel cell stack assembling device of claim 1, wherein the locking part comprises the protruding part, a locking plate and a positioning key, the protruding part is fixed on the locking plate, the locking plate is provided with an inner notch, the positioning key comprises a first part matched with the inner diameter of the notch and a second part with a width larger than the inner diameter of the notch, the first part can pass through the notch and is bolted with the supporting part, and the second part abuts against the side of the locking plate away from the supporting part when the first part is bolted with the supporting part.

3. The proton exchange membrane fuel cell stack assembling device of claim 1, wherein the limiting strip is arranged along the vertical direction and is fixed with the embedded part, and the side of the limiting strip away from the embedded part forms the assembling surface.

4. The proton exchange membrane fuel cell stack assembling device of claim 1, wherein the side of the embedded part away from the limiting strip is provided with a pull ring, and the pull ring is hinged with the embedded part.

5. The proton exchange membrane fuel cell stack assembling device of claim 4, wherein the supporting part comprises a bottom plate and a main body, the bottom plate is slidably connected with the base, the main body is fixed on the bottom plate, and the through hole and the first gap are arranged on the main body.

6. The proton exchange membrane fuel cell stack assembling device of claim 5, wherein the base is provided with a sliding groove, the bottom plate is provided with a plurality of fixing holes, a plurality of bolts are arranged in the fixing holes, one end of the bolt is embedded into the sliding groove, and the bolt is rotated to relatively fix the bottom plate and the base.

7. The proton exchange membrane fuel cell stack assembling device of claim 6, wherein ​ ​ ​ ​ ​ ​ ​ The through hole is arranged on the main body along the horizontal direction, and a second notch for accommodating the pull ring is arranged on the side wall of the end of the through hole away from the limiting strip, and the pull ring is used for driving the limiting strip to separate from the stack.

8. The PEM fuel cell stack assembly apparatus of claim 1, wherein: The recess is arranged on the top of the embedding piece.

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