A dual-stack combined packaging structure

Abstract

The present application discloses a dual-stack combined packaging structure, which includes an upper stack and a lower stack arranged up and down. Upper wedges are respectively formed at both ends of the front and rear sides of the upper stack, and lower wedges are respectively formed at both ends of the front and rear sides of the lower stack. The upper wedges and the lower wedges are arranged corresponding to each other up and down. A positioning groove is formed at the top of the lower wedge, and a positioning protrusion that fits into the positioning groove is formed at the bottom of the upper wedge. Outer ends of the upper wedge and the lower wedge respectively protrude outward to form an upper ear plate and a lower ear plate. The bottom of the upper ear plate and the top of the lower ear plate are mutually attached and supported, and first positioning bolt holes for bolt fixation are respectively formed. The present invention designs an upper and lower wedge structure, and maintains the stability between the upper and lower stacks through the positioning between the upper and lower wedges and the fixation in the vertical direction of one side of the ear plate.

Description

Technical Field

[0001] The present application relates to the encapsulation of an electric stack, and particularly to a combined encapsulation structure of a dual electric stack. Background Art

[0002] Based on the electrochemical principle of fuel cells and the application of fuel cell products, the market demand for high-power products has been increasing year by year. It has become imperative to develop fuel cell products with a power of 150 - 200 kW and above. In principle and structure, fuel cells can achieve multi-section series connection to increase the product power. However, in practice, when the number of sections accumulates to a certain amount, it will lead to poor battery performance uniformity and a large range of differences, which will not only increase the difficulty of matching and selection, but also seriously affect the service life of fuel cells.

[0003] To solve the above problems, the market generally adopts a dual-stack solution to increase the overall power of the product. A large part of fuel cell products are applied to vehicle docking, which poses challenges to the structural stability, processability, etc. of fuel cell products.

[0004] The main problems existing in the current dual-stack solutions on the market are as follows:

[0005] 1) The structure is single, with poor stability, and it is easy to have the situation of relative movement between the dual stacks;

[0006] 2) The consistency is poor, and the relative dimensions of products of the same model have poor consistency;

[0007] 3) The processability is poor, the installation procedure is complicated, and there are many installation processes;

[0008] 4) The overall protection of the module is poor, it is difficult to meet the protection requirements of IP67, and there are easy insulation problems;

[0009] 5) The space size is large and it is relatively bulky. Summary of the Invention

[0010] The purpose of the present invention is to provide a combined encapsulation structure of a dual electric stack, and a self-locking structure is designed to achieve the stability of the dual electric stack without relative movement.

[0011] To achieve the above purpose, the present invention provides the following technical solutions.

[0012] The embodiment of the present application discloses a dual-stack combined packaging structure, which includes an upper stack and a lower stack arranged up and down. Upper wedges are respectively formed at both ends of the front and rear sides of the upper stack, and lower wedges are respectively formed at both ends of the front and rear sides of the lower stack. The upper wedges and the lower wedges are arranged in an up-and-down corresponding manner. A positioning groove is formed at the top of the lower wedge, and a positioning protrusion that fits into the positioning groove is formed at the bottom of the upper wedge. Outer ears are respectively protruded outward from the outer ends of the upper wedge and the lower wedge to form an upper ear plate and a lower ear plate. The bottom of the upper ear plate and the top of the lower ear plate are mutually attached and supported, and first positioning bolt holes for bolt fixation are respectively formed.

[0013] Preferably, in the above-mentioned dual-stack combined packaging structure, a positioning slider is protruded downward from the bottom of the lower wedge. The structure further includes a bottom plate, and a positioning slide rail for fitting and supporting the positioning slider is formed on the top surface of the bottom plate. Second positioning bolt holes for bolt fixation are respectively formed between the bottom of the lower ear plate and the bottom plate.

[0014] Preferably, in the above-mentioned dual-stack combined packaging structure, fixing blocks are respectively protruded from the front and rear sides of both ends of the bottom plate, and fixing holes are formed on the fixing blocks.

[0015] Preferably, in the above-mentioned dual-stack combined packaging structure, an upper cover plate is further included, and a cushion block that abuts against the upper stack is formed on the bottom surface of the upper cover plate.

[0016] Preferably, in the above-mentioned dual-stack combined packaging structure, a front end plate and a rear end plate are further included, which are respectively fixed to the front side and the rear side of the upper stack and the lower stack by bolts. A CVM module cover plate is further arranged behind the rear end plate.

[0017] Preferably, in the above-mentioned dual-stack combined packaging structure, a manifold is further included. The manifold is embedded in the front end plate, and a sealing gasket is arranged at the embedding position.

[0018] Compared with the prior art, the advantage of the present invention lies in the design of the upper and lower wedge structures. Through the positioning between the upper and lower wedges and the fixation in the vertical direction of one side ear plate, the stability between the upper and lower stacks is maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1The figure shows a three-dimensional view of the dual-stack combined packaging structure in a specific embodiment of the present invention;

[0021] Figure 2 The figure shows a three-dimensional view of the dual-stack combined packaging structure with the front end plate removed in a specific embodiment of the present invention;

[0022] Figure 3 The figure shows an exploded view of the dual-stack combined packaging structure in a specific embodiment of the present invention;

[0023] Figure 4 is Figure 3 an enlarged view of part A in;

[0024] Figure 5 The figure shows another perspective exploded view of the dual-stack combined packaging structure in a specific embodiment of the present invention;

[0025] Figure 6 The figure shows another perspective exploded view of the dual-stack combined packaging structure in a specific embodiment of the present invention. Specific Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Combined with Figure 1-6 As shown, the dual-stack combined packaging structure 100 includes an upper stack 101 and a lower stack 102 arranged up and down. Upper wedges 103 are respectively formed at both ends of the front and rear sides of the upper stack 101, and lower wedges 104 are respectively formed at both ends of the front and rear sides of the lower stack 102. The upper wedges 103 and the lower wedges 104 are arranged corresponding to each other up and down. A positioning groove 105 is formed at the top of the lower wedge 104, and a positioning protrusion 106 that fits into the positioning groove 105 is formed at the bottom of the upper wedge 103. Outer ears 107 and 108 are respectively protruded outward from the outer ends of the upper wedge 103 and the lower wedge 104. The bottom of the upper ear 107 and the top of the lower ear 108 are mutually attached and supported, and first positioning bolt holes 109 for bolt fixation are respectively formed.

[0028] In this technical solution, an upper and lower wedge structure is designed. Through the positioning between the upper and lower wedges and the fixation in the vertical direction of one side ear plate, the stability between the upper and lower stacks is maintained

[0029] The bottom of the lower wedge block 104 protrudes downward to form a positioning slider 110. It further includes a bottom plate 111. A positioning slide rail 112 for fitting and supporting the positioning slider 110 is formed on the top surface of the bottom plate 111. Second positioning bolt holes 113 for bolt fixation are respectively formed at the bottom of the lower ear plate 108 and the bottom plate 111.

[0030] In this technical solution, the stack is fixed to the bottom plate, and positioning and locking are achieved through the slider and the slide rail, and further fixed through the second positioning bolt holes to maintain stability.

[0031] Further, fixing blocks 114 protrude from the front, rear, left, and right sides at both ends of the bottom plate 111, and fixing holes 115 are formed on the fixing blocks 114.

[0032] In this technical solution, it is used to install the dual-stack system.

[0033] Further, it further includes an upper cover plate 116. A cushion block 117 that abuts against the upper stack 101 is formed on the bottom surface of the upper cover plate 116.

[0034] In this technical solution, the stack's movement in the vertical direction is further restricted.

[0035] Further, it further includes a front end plate 118 and a rear end plate 119, which are respectively fixed to the front and rear sides of the upper stack 101 and the lower stack 102 by bolts. A CVM module cover plate 120 is also provided behind the rear end plate 119.

[0036] In this technical solution, the functions of the stack are realized.

[0037] Further, it further includes a manifold 121. The manifold 121 is embedded in the front end plate 118, and a sealing gasket 122 is provided at the embedding position.

[0038] In this technical solution, the manifold adopts an embedded structure, and the simultaneous sealing of the manifold and the stack end face is completed through the sealing member.

[0039] In this technical solution, the upper stack and the lower stack are self-locked and installed through the "wedge block" structure, and Z-direction locking installation is completed through the side ear plates. Then, X and Y-direction locking and alignment are realized through the front end plate and the rear end plate. The locking structure is stable. The rear end plate can not only level the installation distance of the rear stack but also play a role in fixing the CVM module, with high integration. After the overall module of the stack is integrally installed, it is integrally hoisted and installed on the encapsulation shell through the "wedge block", and then locked by the bolts at the lower side, that is, the second positioning bolt holes. In order to fully ensure the Z-direction structure of the module, cushion blocks are added to the upper cover plate to prevent the stack from moving up and down in the Z direction. In order to facilitate the maintenance of the CVM module, a maintenance port is designed for easy operation. Through the "wedge block" structure, it can also play a guiding role during the installation process and a limiting role after installation.

[0040] Compared with the prior art, the advantages of this technical solution are as follows: the "wedge block" self-locking structure is innovatively designed to achieve self-locking between the two stacks, and the lug structure on the side of the end plate realizes the locking in the Z direction of the two stacks to achieve the purpose of structural stability; a "wedge block" structure is arranged on the lower side of the fuel cell stack packaging bottom plate, which can not only ensure the dimensional consistency but also play a role in limiting, making the structure more stable and reliable; it is installed in modules and multiple processes are carried out in parallel, with good installation processability; a sealing ring is set at the module boundary, with good sealing effect, meeting the requirements of IP67 packaging; the gap between modules is reasonably designed, fully considering the influence of creepage distance on insulation, with high module integration and small overall size.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0042] The above are only specific embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A dual-stack combined packaging structure, characterized in that It includes an upper power cell and a lower power cell which are arranged vertically. Upper wedges are respectively formed at both ends of the front and rear sides of the upper power cell, and lower wedges are respectively formed at both ends of the front and rear sides of the lower power cell. The upper wedges and the lower wedges are arranged vertically corresponding to each other. A positioning groove is formed at the top of the lower wedge, and a positioning protrusion which fits into the positioning groove is formed at the bottom of the upper wedge. Outer ends of the upper wedge and the lower wedge respectively protrude outward to form an upper ear plate and a lower ear plate. The bottom of the upper ear plate and the top of the lower ear plate are mutually attached and supported, and first positioning bolt holes for bolt fixation are respectively formed thereon.

2. The dual-stack combined packaging structure according to claim 1, wherein A positioning slider protrudes downward from the bottom of the lower wedge. It further includes a bottom plate, and a positioning slide rail which fits and supports the positioning slider is formed on the top surface of the bottom plate. Second positioning bolt holes for bolt fixation are respectively formed on the bottom of the lower ear plate and the bottom plate.

3. The dual-stack combined encapsulation structure according to claim 2, characterized in that, Fixing blocks protrude respectively from the front and rear sides of both ends of the bottom plate, and fixing holes are formed on the fixing blocks.

4. The dual-stack combined encapsulation structure according to claim 1, wherein, It further includes an upper cover plate, and a cushion block which abuts against the upper power cell is formed on the bottom surface of the upper cover plate.

5. The dual-stack combined encapsulation structure according to claim 1, characterized in that, It further includes a front side end plate and a rear side end plate which are respectively fixed to the front side and the rear side of the upper power cell and the lower power cell by bolts. A CVM module cover plate is further arranged behind the rear side end plate.

6. The dual-stack combined packaging structure according to claim 5, wherein It further includes a manifold which is embedded in the front side end plate, and a sealing gasket is arranged at the embedding position.

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