Electric pile and electric pile protection assembly

Abstract

The galvanic pile protection assembly comprises a supporting assembly capable of supporting the side walls of the galvanic pile, the supporting assembly comprises supporting plates, the supporting plates are arranged on at least two of the upper side wall, the lower side wall, the left side wall and the right side wall of the galvanic pile, and the supporting plates are pressed on the side walls through a packaging box body. Therefore, supporting force is provided for the side wall. The supporting plates are arranged in the length direction perpendicular to the end plates, so that the supporting plates can support the single bodies between the two end plates. According to the technical scheme, the supporting assemblies are matched with the end plates, side face supporting of the galvanic pile is added on the basis that the end face of the galvanic pile is supported, preferably, the four side walls of the galvanic pile are all supported through the supporting assemblies, displacement of single galvanic pile bodies in the using process is reduced, and therefore the problem that the galvanic pile structure is not firm is solved, and galvanic pile damage is reduced.

Description

Technical Field

[0001] This application relates to the field of new energy technologies, and particularly to a stack and a stack protection component. Background Art

[0002] A stack is a place where an electrochemical reaction occurs and is the core part of a fuel cell power system.

[0003] As Figure 1 shown, the stack includes a front end plate 01, a rear end plate 02, and a plurality of single cells stacked in series between the front end plate 01 and the rear end plate 02. Seals are embedded between the single cells. After the front end plate 01, the rear end plate 02, and the plurality of single cells are combined, they are fastened by a lead screw 03.

[0004] The weight of the stack is supported by the front end plate 01 and the rear end plate 02. Since the distance between the front end plate 01 and the rear end plate 02 is relatively far, and the length of a high-power stack is even longer, there are problems of insufficient support force and unstable structure for the stack, and the stack is easily damaged.

[0005] Therefore, how to solve the problem of unstable structure of the stack to reduce stack damage has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0006] This application proposes a stack protection component to solve the problem of unstable structure of the stack and reduce stack damage. This application also proposes a stack.

[0007] To achieve the above object, this application provides a stack protection component, including a support component for supporting the side wall of the stack,

[0008] The support component includes a support plate. The support plate is provided on at least two of the upper side wall, the lower side wall, the left side wall, and the right side wall of the stack. The length direction of the support plate is perpendicular to the end plate. The support plate is pressed against the side wall by a sealed box body to provide a support force to the side wall of the stack.

[0009] Preferably, in the above stack protection component, the support component further includes a backing plate. The backing plate is located between the support plate and the side wall and is used to disperse the stress between the stack and the support plate.

[0010] Preferably, in the above stack protection component, the backing plate is provided with ventilation holes.

[0011] Preferably, in the above stack protection component, the backing plate includes a plurality of small backing plates. The plurality of small backing plates are arranged side by side in a direction perpendicular to the end plate, and / or,

[0012] The width of the small backing plate in the direction parallel to the end plate is less than or equal to the width of a single cell of the stack.

[0013] Preferably, in the above-mentioned stack protection assembly, the backing plate is a rigid insulating plastic plate.

[0014] Preferably, in the above-mentioned stack protection assembly, a groove is provided on one side of the support plate that fits with the sealed box body to prevent hydrogen accumulation.

[0015] Preferably, in the above-mentioned stack protection assembly, at least two of the upper side wall and the lower side wall of the stack are respectively provided with the support plates, and / or,

[0016] The width of the support plate provided on the upper side wall is smaller than the width of the support plate provided on the lower side wall.

[0017] Preferably, in the above-mentioned stack protection assembly, at least one support plate is respectively provided on the left side wall and the right side wall, and / or,

[0018] The width of the support plates provided on the left side wall and the right side wall is less than or equal to the height of a single cell of the stack.

[0019] Preferably, in the above-mentioned stack protection assembly, there is a gap between the end of the support plate and the end plate, and the end of the support plate is bolted to the end plate; and / or, the support plate is an epp support plate.

[0020] A stack includes a stack body and a stack protection assembly, and the stack protection assembly is the stack protection assembly described in any one of the above solutions.

[0021] The stack protection assembly provided by the embodiments of the present application includes a support assembly capable of supporting the side walls of the stack. The support assembly includes support plates. Support plates are provided on at least two of the upper side wall, the lower side wall, the left side wall and the right side wall of the stack. The support plates are pressed against the side walls by a sealed box body to provide a supporting force to the side walls. The length of the support plates in the direction perpendicular to the end plate is set so that the support plates can support the single cells between the two end plates. The support assembly cooperates with the end plates to, on the basis of supporting the end faces of the stack, increase the support for the sides of the stack. Preferably, the four side walls of the stack are all supported by the support assembly to reduce the displacement of the single cells of the stack during use, thereby solving the problem of the unstable structure of the stack and reducing stack damage.

[0022] The present application also discloses a stack, including a stack body and a stack protection assembly, wherein the stack protection assembly is the stack protection assembly described in any one of the above solutions. Since the stack protection assembly has the above technical effects, the stack having this stack protection assembly also has the same technical effects and will not be elaborated here. Brief Description of the Drawings

[0023] 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 the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings, and the present application can also be applied to other similar scenarios according to the provided drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0024] Figure 1 is a schematic structural diagram of a stack provided by the prior art;

[0025] Figure 2 is a schematic structural diagram of a stack provided by the present application;

[0026] Figure 3 is a schematic structural diagram of a stack provided by the present application;

[0027] Figure 4 is an exploded view of a stack provided by the present application.

[0028] The brief description of the drawings is as follows:

[0029] 01, front end plate; 02, rear end plate; 03, lead screw;

[0030] 1, support assembly; 11, support plate; 111, groove; 12, backing plate; 121, small backing plate; 2, end plate; 31, upper side wall; 32, lower side wall; 33, right side wall; 34, left side wall;

[0031] l, length of the end plate; w, width of the end plate; t, thickness of the single cell. Detailed Description of the Embodiments

[0032] The following will further elaborate on the present application in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application and not to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0033] It should be noted that for the convenience of description, only the parts related to the relevant application are shown in the drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0034] It should be understood that the "system", "device", "unit" and / or "module" used in this application is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, this word can be replaced by other expressions.

[0035] As shown in this application and the claims, unless the context clearly indicates otherwise, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, commodity or device including the element.

[0036] Among them, in the description of the embodiments of this application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; the "and / or" herein is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "a plurality of" means two or more than two.

[0037] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0038] Flowcharts are used in this application to illustrate the operations performed by the system according to the embodiments of this application. It should be understood that the previous or subsequent operations do not necessarily need to be executed precisely in sequence. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or several steps can be removed from these processes.

[0039] Please refer to Figures 2 - 4 。

[0040] Some embodiments of this application disclose a stack protection component, including a support component 1 for supporting the side wall of the stack.

[0041] To Figure 3 and 4For reference, in the present application, the side wall located above the stack is named as the upper side wall 31 of the stack, the side wall located below the stack is named as the lower side wall 32 of the stack, the lower side wall 32 is located below the upper side wall 31, the side wall close to the reader is named as the right side wall 33 of the stack, and the side wall opposite to the right side wall 33 is named as the left side wall 34 of the stack.

[0042] In the present application, the side walls of the stack are the walls that the stack is located between the front end plate and the rear end plate and are perpendicular to the front end plate and the rear end plate. The number of side walls is four, specifically the upper side wall 31, the lower side wall 32, the left side wall 34, and the right side wall 33.

[0043] The support assembly 1 includes a support plate 11. The support plate 11 is provided on at least two of the upper side wall, the lower side wall, the left side wall, and the right side wall. The length direction of the support plate 11 is perpendicular to the end plate 2 to support the single cells between the two end plates 2. The support plate 11 is pressed against the side wall by the sealed box body so that the support plate 11 provides a support force to the side wall of the stack.

[0044] In the present application, the space between the stack and the box body is filled by the support plate 11 to achieve the purpose of supporting the stack, reducing the vibration displacement of the single cells of the stack during running with the vehicle, and further reducing the damage to the stack.

[0045] The support plate 11 is a strip-shaped support plate, and the length extension direction of the strip-shaped support plate is perpendicular to the end plate 2. Preferably, the length of the support plate 11 is shorter than the distance between the two end plates. There is a gap between the end of the support plate 11 and the end plate 2, and the end of the support plate 11 is bolted to the end plate 2. In this embodiment, the support plate 11 can support all the single cells between the two end plates 2.

[0046] Preferably, the support plate 11 is provided on the upper side wall, the lower side wall, the left side wall, and the right side wall to provide a support force to the four side walls of the stack.

[0047] The stack protection assembly disclosed in the present application includes a support assembly 1 for supporting the side walls of the stack. The support assembly 1 includes a support plate 11. The support plate 11 is pressed against the side wall by the end plate 2 and the sealed box body so that the support plate 11 can support the single cells between the two end plates 2. The support assembly 1 cooperates with the end plate 2 to increase the side support of the stack on the basis of the end face support of the stack. Preferably, the four side walls of the stack are all supported by the support plate 11 of the support assembly 1 to reduce the displacement of the single cells of the stack during use, thereby solving the problem of the unstable structure of the stack and reducing the damage to the stack.

[0048] It should be noted here that the stack protection assembly is made of insulating material and elastic material.

[0049] The stack is formed by connecting multiple single cells in series under extrusion, and a corrugated shape will be formed on the side wall of the stack. In order to enable the side wall of the stack to evenly bear the supporting force from the support plate 11, the support assembly 1 disclosed in this application further includes a backing plate 12, and the backing plate 12 is located between the support plate 11 and the side wall of the stack.

[0050] As Figure 2 shown, the backing plate 12 is located between the support plate 11 and the upper side wall 31.

[0051] The backing plate 12 is not limited to being located between the support plate 11 and the upper side wall 31, and can also be located between the support plate 11 and the lower side wall 32 simultaneously / only, can also be located between the support plate 11 and the left side wall 34 simultaneously / only, and can also be located between the support plate 11 and the right side wall 33 simultaneously / only.

[0052] In this application, the stack protection assembly is connected to the assembled stack.

[0053] Both the upper side wall 31 and the lower side wall 32 of the assembled stack are provided with lead screws. When installing the support assembly 1 on the upper side wall 31 and the lower side wall 32 of the stack, first lay the backing plate 12 on the upper side wall 31 and the lower side wall 32, and then lay the support plate 11 on the backing plate 12 of the upper side wall 31 and the backing plate 12 of the lower side wall 32;

[0054] When installing the support assembly 1 on the left side wall 34 and the right side wall 33 of the stack, first lay the backing plate 12 on the left side wall 34 and the right side wall 33, and then lay the support plate 11 on the backing plate 12 of the left side wall 34 and the backing plate 12 of the right side wall 33;

[0055] Finally, the support plate 11 and the backing plate 12 are pressed tightly against the corresponding side walls of the stack through the sealing box body.

[0056] In some embodiments of this application, at least two support plates 11 are provided on the upper side wall of the stack, and at least two support plates 11 are provided on the lower side wall of the stack. The width of the support plate 11 on the upper side wall 31 of the stack is smaller than the width of the support plate 11 on the lower side wall 32 of the stack, and the width of the support plate 11 on the upper side wall 31 of the stack and the width of the support plate 11 on the lower side wall 32 of the stack are both smaller than the length of the end plate 2.

[0057] At least one support plate 11 is provided on the left side wall 34 of the stack, and at least one support plate 11 is provided on the right side wall 33 of the stack. The width of the support plate 11 on the left side wall 33 and the right side wall 33 of the stack is smaller than or equal to the thickness of a single cell.

[0058] Here, the length l and width w of the end plate 2 are described for Figure 2For reference, the dimension of the end plate 2 in the vertical direction is the width w of the end plate 2, and the dimension of the end plate 2 in the horizontal direction along the direction perpendicular to the axis of the lead screw is the length l of the end plate 2; the dimension of the single cell in the vertical direction is the thickness t of the single cell.

[0059] In order to prevent the leaked air from accumulating in the fuel cell stack, ventilation holes are provided in the backing plate 12, and the leaked hydrogen can be discharged to the space between the box body and the fuel cell stack through the ventilation holes.

[0060] The backing plate 12 includes a plurality of small backing plates 121, and the plurality of small backing plates 121 are arranged side by side in a direction perpendicular to the end plate 2, and the width of the small backing plate 121 in the direction parallel to the end plate 2 is less than or equal to the width of the single cell of the fuel cell stack.

[0061] It should be noted here that the width of the single cell is the dimension of the single cell in the direction parallel to the end plate 2.

[0062] Such as Figure 2 and 4 As shown, the backing plate 12 includes three small backing plates 121, and the overall length of the three small backing plates 121 is at least equal to the distance between the two end plates 2.

[0063] In this application, the backing plate 12 is designed in blocks, so that the backing plate 12 can meet different fuel cell stack lengths and provide the versatility of the backing plate 12.

[0064] The backing plate 12 can also be an integral backing plate, and the length and width of the backing plate 12 are cut according to the size of the fuel cell stack.

[0065] In order to further optimize the above technical solution, a groove 111 is provided on the side of the support plate 11 that fits the sealed box body, and the side of the support plate 11 that fits the side wall of the fuel cell stack is a plane.

[0066] The leaked hydrogen can flow in the groove 111 to prevent it from accumulating in the fuel cell stack.

[0067] Preferably, the groove 111 of the support plate 11 located on the upper side wall of the fuel cell stack is opened in a direction parallel to the end plate 2, the groove 111 of the support plate 11 located on the left side wall of the battery is opened in the vertical direction, the groove 111 of the support plate 11 located on the lower side wall of the battery is opened in a direction parallel to the end plate 2, and the groove 111 of the support plate 11 located on the right side wall of the battery is opened in the vertical direction, and the distance between adjacent grooves 111 on the support plates 11 located on different side walls is equal and they are interconnected.

[0068] In some embodiments of this application, the support plate 11 is an epp (expanded polypropylene) support plate 11.

[0069] Epp has a low specific gravity and will not increase the weight of the fuel cell stack too much;

[0070] EPP has good elasticity, seismic resistance and compressive resistance, with a high deformation recovery rate. It can effectively support the single cells of the stack to improve the structural firmness of the stack. It can be recycled 100% with almost no reduction in performance.

[0071] EPP is resistant to oil, acid and alkali, and can cope with chemical corrosion inside the stack.

[0072] EPP is heat-resistant, and the working temperature range is -40 to 130 °C.

[0073] This application also discloses a stack, including a stack body and a stack protection component, where the stack protection component is the stack protection component described in any of the above solutions.

[0074] Due to the above technical effects of the stack protection component, the stack with this stack protection component also has the same technical effects, which will not be elaborated here.

[0075] The above description is only for the preferred embodiments of this application and the description of the applied technical principles, and is not intended to limit this application. For those skilled in the art, this application can have various changes and variations. The scope of the application involved in this application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above application concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An electric stack protection component, characterized in that It includes a support component (1) for supporting the side wall of the stack. The support component (1) includes a support plate (11). The support plate (11) is provided on at least two of the upper side wall (31), lower side wall (32), left side wall (34) and right side wall (33) of the stack. The length direction of the support plate (11) is perpendicular to the end plate (2). The support plate (11) can be pressed against the side wall by the sealed box body to provide a support force to the side wall of the stack.

2. The stack protection component according to claim 1, characterized in that, The support component (1) further includes a backing plate (12). The backing plate (12) is located between the support plate (11) and the side wall and is used to disperse the stress between the stack and the support plate (11).

3. The stack protection component according to claim 2, wherein, Vent holes are formed in the backing plate (12).

4. The stack protection assembly according to claim 2, characterized in that, The backing plate (12) includes a plurality of small backing plates (121). The plurality of small backing plates (121) are arranged side by side in a direction perpendicular to the end plate (2), and / or The width of the small backing plate (121) in the direction parallel to the end plate (2) is less than or equal to the width of a single cell of the stack.

5. The stack protection component according to claim 2, characterized in that, The backing plate (12) is a rigid insulating plastic plate.

6. The stack protection component according to claim 1, characterized in that, A groove (111) is provided on the side of the support plate (11) that fits the sealed box body to prevent hydrogen accumulation.

7. The stack protection component according to claim 1, characterized in that At least two support plates (11) are respectively provided on the upper side wall (31) and the lower side wall (32) of the stack, and / or The width of the support plate (11) provided on the upper side wall (31) is smaller than the width of the support plate (11) provided on the lower side wall (32).

8. The stack protection component according to claim 1, characterized in that At least one support plate (11) is respectively provided on the left side wall (34) and the right side wall (33), and / or The width of the support plate (11) provided on the left side wall (34) and the right side wall (33) is less than or equal to the height of a single cell of the stack.

9. The stack protection assembly according to claim 1, wherein There is a gap between the end of the support plate (11) and the end plate (2), and the end of the support plate (11) is bolted to the end plate (2); and / or The support plate (11) is an EPP support plate.

10. A stack, characterized in that, It includes a stack body and a stack protection component, and the stack protection component is the stack protection component according to any one of claims 1-9.

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