Combined packaging shell

Abstract

The present application proposes a combined packaging shell, comprising a first end plate, a second end plate, and a shell arranged between the first end plate and the second end plate; a first floating end plate is also arranged between the first end plate and the shell; a second floating end plate is also arranged between the second end plate and the shell; the shell comprises a first shell monomer, a second shell monomer, a third shell monomer, and a fourth shell monomer, which are sequentially arranged between the first end plate and the second end plate; a sealing ring is arranged between the first shell monomer and the second shell monomer, between the second shell monomer and the third shell monomer, and between the third shell monomer and the fourth shell monomer; one end of the first shell monomer is connected to the first floating end plate; one end of the fourth shell monomer is connected to the second floating end plate. The present application can be adapted to fuel cell stacks of different powers, with low mass production cost and short delivery cycle.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cells, and in particular to a combined packaging shell. Background Art

[0002] A fuel cell is a device that converts chemical energy into electrical energy by reacting the introduced fuel with oxygen. In order to ensure the effectiveness and durability of the fuel cell stack, it is usually necessary to add a shell to the fuel cell stack to protect the bipolar plates and membrane electrodes in the fuel cell stack from erosion by the external environment. During the mass production of fuel cell stacks, fuel cell stacks of different powers need to be customized according to the needs of different customers.

[0003] At present, the packaging shells of fuel cell stacks on the market are only suitable for fuel cell stacks of a single power after mold opening. They have poor applicability to fuel cell stacks of different powers and cannot be adapted to fuel cell stacks of other powers, resulting in the need to re-mold or mold multiple times for the packaging of the fuel cell stack, which increases development costs and extends the supply cycle of the fuel cell stack. Summary of the invention

[0004] Based on this, an embodiment of the present invention provides a combined packaging shell, which aims to solve the problem that the packaging shell of the fuel cell stack is only suitable for a single power stack after mold opening, has poor applicability to fuel cell stacks of different powers and cannot be adapted to other power stacks, resulting in the fuel cell stack packaging needing to be re-molded or molded multiple times.

[0005] To achieve the above object, the present invention proposes the following technical solutions:

[0006] A combined packaging shell, comprising a first end plate, a second end plate, and a shell arranged between the first end plate and the second end plate; a first floating end plate is also arranged between the first end plate and the shell; a second floating end plate is also arranged between the second end plate and the shell; the shell comprises a first shell monomer, a second shell monomer, a third shell monomer, and a fourth shell monomer which are sequentially arranged between the first end plate and the second end plate; a first sealing ring is arranged between the first shell monomer and the second shell monomer; a second sealing ring is arranged between the second shell monomer and the third shell monomer; a third sealing ring is arranged between the third shell monomer and the fourth shell monomer; an end of the first shell monomer away from the second shell monomer is connected to the first floating end plate; an end of the fourth shell monomer away from the third shell monomer is connected to the second floating end plate.

[0007] Exemplarily, the first housing unit, the second housing unit, the third housing unit and the fourth housing unit are respectively adapted for fuel cell stacks of different powers.

[0008] Exemplarily, the tops and bottoms of both ends of the first end plate, the first housing monomer, the second housing monomer, the third housing monomer, the fourth housing monomer and the second end plate are provided with mounting holes for fixing. The mounting holes are provided on the outer surfaces of the first end plate, the second end plate and the housing for easy assembly and disassembly.

[0009] Exemplarily, the first end plate, the first housing monomer, the second housing monomer, the third housing monomer, the fourth housing monomer and the second end plate are fixedly connected in sequence by screws, and the screws are arranged in the mounting holes.

[0010] Exemplarily, the first floating end plate and the second floating end plate are both elastic floating end plates. The elastic floating end plate can play a buffering role during the installation and use of the housing unit, can ensure the insulation and sealing of the battery stacks of different powers, and can continue to provide support for the battery stack when the height of the battery stack changes due to wear and other reasons.

[0011] Exemplarily, the first sealing ring, the second sealing ring and the third sealing ring are all elastic sealing rings. The elastic sealing ring can play a buffering role during the installation and use of the housing unit, can ensure the insulation and sealing of the battery stacks of different powers, and can also continue to provide support for the battery stack after the height of the battery stack changes due to wear and other reasons, playing a buffering role.

[0012] Exemplarily, a first sealing groove for installing the first sealing ring is provided on an end surface of the first housing monomer close to one end of the second housing monomer.

[0013] Exemplarily, a second sealing groove for mounting the first sealing ring is provided on an end surface of the second housing unit close to one end of the first housing unit.

[0014] Exemplarily, a third sealing groove for mounting the second sealing ring is provided on an end surface of the second housing unit close to one end of the third housing unit.

[0015] Exemplarily, a fourth sealing groove for mounting the second sealing ring is provided on an end surface of the third housing unit close to one end of the second housing unit.

[0016] Exemplarily, a fifth sealing groove for mounting the third sealing ring is provided on an end surface of the third housing monomer close to one end of the fourth housing monomer.

[0017] Exemplarily, a sixth sealing groove for mounting the third sealing ring is provided on an end surface of the fourth housing unit close to one end of the third housing unit.

[0018] The present invention proposes a combined packaging shell, which can be freely combined according to actual needs to adapt to the needs of fuel cell stacks of different powers by setting a batch of shell monomers adapted to fuel cell stacks of different powers; the shell monomers only need to be molded once, which greatly reduces the mass production cost of the shell and effectively shortens the supply cycle of the stack. By setting an elastic sealing ring between the shell monomers, the sealing of the shell is effectively guaranteed, and at the same time, it can play a buffering role when the height of the fuel cell stack changes due to external factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 The figure is a schematic structural diagram of a combined packaging shell according to an embodiment of the present invention.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] At present, the fuel cell packaging shells on the market are only suitable for a single power stack after mold opening, and cannot be adapted to other power stacks, resulting in the fuel cell packaging requiring multiple mold openings or re-molding, which is costly. In order to solve the above technical problems, the present invention proposes a combined packaging shell.

[0028] like Figure 1As shown, a combined packaging shell proposed in an embodiment of the present invention includes a first end plate 1, a second end plate 2, and a shell 3 arranged between the first end plate 1 and the second end plate 2; a first floating end plate 4 is also arranged between the first end plate 1 and the shell 3; a second floating end plate 5 is also arranged between the second end plate 2 and the shell 3; the shell 3 includes a first shell monomer 31, a second shell monomer 32, a third shell monomer 33, and a fourth shell monomer 34 which are sequentially arranged between the first end plate 1 and the second end plate 2; a first sealing ring 6 is arranged between the first shell monomer 31 and the second shell monomer 32; a second sealing ring 7 is arranged between the second shell monomer 32 and the third shell monomer 33; a third sealing ring 8 is arranged between the third shell monomer 33 and the fourth shell monomer 34; an end of the first shell monomer 31 away from the second shell monomer 32 is connected to the first floating end plate 1; an end of the fourth shell monomer 34 away from the third shell monomer 33 is connected to the second floating end plate 2.

[0029] Exemplarily, the first housing monomer 31 , the second housing monomer 32 , the third housing monomer 33 and the fourth housing monomer 34 are respectively adapted for fuel cell stacks of different powers.

[0030] Exemplarily, the tops and bottoms of both ends of the first end plate 1, the first housing monomer 31, the second housing monomer 32, the third housing monomer 33, the fourth housing monomer 34 and the second end plate 2 are provided with mounting holes 9 for fixing. The mounting holes 9 are provided on the outer surfaces of the first end plate 1, the second end plate 2 and the housing 3 for easy assembly and disassembly.

[0031] Exemplarily, the first end plate 1 , the first shell monomer 31 , the second shell monomer 32 , the third shell monomer 33 , the fourth shell monomer 34 and the second end plate 2 are fixedly connected in sequence by screws (not marked in the figure), and the screws are arranged in the mounting holes 9 .

[0032] Exemplarily, the first floating end plate 4 and the second floating end plate 5 are both elastic floating end plates. The elastic floating end plate can play a buffering role during the installation and use of the housing unit, can ensure the insulation and sealing of the battery stacks of different powers, and can also continue to provide support for the battery stack when the height of the battery stack changes due to wear and other reasons.

[0033] Exemplarily, the first sealing ring 6, the second sealing ring 7 and the third sealing ring 8 are all elastic sealing rings. The elastic sealing ring can play a buffering role during the installation and use of the housing unit, can ensure the insulation and sealing of the battery stacks of different powers, and can also continue to provide support for the battery stack after the height of the battery stack changes due to wear and other reasons, playing a buffering role.

[0034] Exemplarily, a first sealing groove (not marked in the figure) for mounting the first sealing ring 6 is provided on an end surface of the first housing monomer 31 close to one end of the second housing monomer 32 .

[0035] Exemplarily, a second sealing groove 321 for mounting the first sealing ring 6 is provided on an end surface of the second housing monomer 32 close to one end of the first housing monomer 31 .

[0036] Exemplarily, a third sealing groove (not marked in the figure) for mounting the second sealing ring 7 is provided on an end surface of the second housing monomer 32 close to one end of the third housing monomer 33 .

[0037] Exemplarily, a fourth sealing groove 331 for mounting the second sealing ring 7 is provided on an end surface of the third housing monomer 33 close to one end of the second housing monomer 32 .

[0038] Exemplarily, a fifth sealing groove (not marked in the figure) for mounting the third sealing ring 8 is provided on an end surface of the third housing monomer 33 close to one end of the fourth housing monomer 34 .

[0039] Exemplarily, a sixth sealing groove 341 for mounting the third sealing ring 8 is provided on an end surface of the fourth housing monomer 34 close to one end of the third housing monomer 33 .

[0040] In this embodiment, the first shell monomer 31 is adapted to a battery stack with a power of 50kW, the second shell monomer 32 is adapted to a battery stack with a power of 20kW, the third shell monomer 33 is adapted to a battery stack with a power of 5kW, and the fourth shell monomer 34 is adapted to a battery stack with a power of 2kW; the first shell monomer 31, the second shell monomer 32, the third shell monomer 33 and the fourth shell monomer 34 can be freely combined and matched, or multiple shells adapted to the same power can be superimposed and combined.

[0041] For example, when a fuel cell stack with a customized power of 77kW is required, in order to package it, one of the first shell monomer 31, the second shell monomer 32, the third shell monomer 33 and the fourth shell monomer 34 can be selected, and a sealing ring can be placed in the sealing groove of each shell. The first shell monomer 31, the second shell monomer 32, the third shell monomer 33 and the fourth shell monomer 34 are fixed in sequence to form an integral shell, and then end plates are respectively installed at both ends of the integral shell, and corresponding elastic floating end plates are installed between the end plates and the integral shell. Thereafter, the end plates, the integral shell and the elastic floating end plates are tightened with fastening bolts to form a shell of a fuel cell stack with a customized power of 77kM.

[0042] In another embodiment, the first shell monomer 31 is adapted to a 30kW power stack, the second shell monomer 32 is adapted to a 25kW power stack, the third shell monomer 33 is adapted to a 10kW power stack, and the fourth shell monomer 34 is adapted to a 1kW power stack. It can be understood that, similarly, we can select one or more shell monomers for combination according to actual use needs to achieve the packaging of 66kM, 55kM, 35kM and other power fuel cell stacks to meet different use needs.

[0043] The present invention proposes a combined packaging shell, which can be freely combined according to actual needs to adapt to the needs of fuel cell stacks of different powers by setting a batch of shell monomers adapted to fuel cell stacks of different powers; the shell monomers only need to be molded once, which greatly reduces the mass production cost of the shell and effectively shortens the supply cycle of the stack. By setting an elastic sealing ring between the shell monomers, the sealing of the shell is effectively guaranteed, and at the same time, it can play a buffering role when the height of the fuel cell stack changes due to external factors.

[0044] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0045] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A combined packaging shell, characterized in that: The invention comprises a first end plate, a second end plate, and a shell arranged between the first end plate and the second end plate; a first floating end plate is also arranged between the first end plate and the shell; a second floating end plate is also arranged between the second end plate and the shell; the shell comprises a first shell monomer, a second shell monomer, a third shell monomer, and a fourth shell monomer which are sequentially arranged between the first end plate and the second end plate; a first sealing ring is arranged between the first shell monomer and the second shell monomer; a second sealing ring is arranged between the second shell monomer and the third shell monomer; a third sealing ring is arranged between the third shell monomer and the fourth shell monomer; an end of the first shell monomer away from the second shell monomer is connected to the first floating end plate; an end of the fourth shell monomer away from the third shell monomer is connected to the second floating end plate; The first housing monomer, the second housing monomer, the third housing monomer and the fourth housing monomer are respectively adapted to fuel cell stacks of different powers; The first sealing ring, the second sealing ring and the third sealing ring are all elastic sealing rings; The first floating end plate and the second floating end plate are both elastic floating end plates.

2. The combined packaging housing according to claim 1, characterized in that: The tops and bottoms of both ends of the first end plate, the first housing monomer, the second housing monomer, the third housing monomer, the fourth housing monomer and the second end plate are all provided with mounting holes for fixing.

3. The combined packaging housing according to claim 2, characterized in that: The first end plate, the first shell monomer, the second shell monomer, the third shell monomer, the fourth shell monomer and the second end plate are fixedly connected in sequence by screws, and the screws are arranged in the mounting holes.

4. The combined packaging housing according to claim 1, characterized in that: The end surface of the first housing monomer close to one end of the second housing monomer is provided with a first sealing groove for installing the first sealing ring; the end surface of the second housing monomer close to one end of the first housing monomer is provided with a second sealing groove for installing the first sealing ring.

5. The combined packaging housing according to claim 1, characterized in that: The end surface of the second housing monomer close to one end of the third housing monomer is provided with a third sealing groove for installing the second sealing ring; the end surface of the third housing monomer close to one end of the second housing monomer is provided with a fourth sealing groove for installing the second sealing ring.

6. The combined packaging housing according to claim 1, characterized in that: The end surface of the third housing monomer close to one end of the fourth housing monomer is provided with a fifth sealing groove for installing the third sealing ring; the end surface of the fourth housing monomer close to one end of the third housing monomer is provided with a sixth sealing groove for installing the third sealing ring.

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