Electric pile shell, electric pile and fuel cell

Abstract

The utility model relates to a galvanic pile shell, a galvanic pile and a fuel cell. The galvanic pile shell comprises a shell body, wherein a template groove is formed inside and / or outside the shell body; and the mounting template can be detachably mounted in the template groove, a mounting structure is arranged on the mounting template, and the mounting structure is used for fixing a galvanic pile stack inside the galvanic pile or galvanic pile accessories outside the galvanic pile. According to the galvanic pile shell, the shell body and the mounting structure are arranged in a split manner, so that platformization and generalization of a product are improved, the mold opening cost of the galvanic pile shell is reduced, and the manufacturing cost is reduced; meanwhile, when the mounting structure of the galvanic pile shell is damaged, only a new mounting template needs to be replaced, and the whole galvanic pile shell does not need to be overhauled, so that the maintenance cost of the galvanic pile shell or the galvanic pile is reduced.

Description

Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to a fuel cell stack casing, a fuel cell stack and a fuel cell. Background Art

[0002] Fuel cells are energy mechanisms that use clean energy as raw materials. Taking hydrogen fuel cells as an example, they produce electric current through the reaction of hydrogen and air to supply power to the outside. They are an important means to replace fuel power mechanisms and achieve vehicle cleanliness. They can also be applied to various scenarios that require energy supply. In fuel cells, the stack is the core component of the fuel cell. The stack includes a stack shell. The interior of the stack shell is used to accommodate the anode and cathode plates, chips, and hydrogen intake and exhaust and other stack components for the fuel cell reaction. The outside of the stack shell is used to fix the water pump, FCU (fuel cell controller) and other stack accessories.

[0003] The mounting structures on the existing fuel cell stack shell (such as mounting bosses, mounting recesses or other forms of mounting structures, etc.) are integrally cast with the fuel cell stack shell, which has poor versatility and high manufacturing and maintenance costs. Utility Model Content

[0004] The present application provides a battery stack shell, a battery stack and a fuel cell to solve the problem in the prior art that the mounting structure of the battery stack shell is integrally formed, resulting in poor versatility, high cost of repeated mold design, and high time and money costs for damage and repair.

[0005] A battery stack casing provided in the present application includes:

[0006] A shell body, wherein a template groove is arranged inside and / or outside the shell body;

[0007] The mounting template can be detachably mounted in the template groove, and a mounting structure is provided on the mounting template, and the mounting structure is used to fix the battery stack inside the battery stack or the battery stack accessories outside the battery stack.

[0008] In some embodiments, a limiting assembly is provided on at least one side of the template groove, and the limiting assembly includes: a limiting groove, a limiting slider and a thrust block; the limiting groove is provided on the shell body beside the template groove, the limiting groove is connected to the template groove, the limiting slider is slidably matched with the limiting groove, and can extend out of the limiting groove to limit the installation template, and the thrust block is used to stop the limiting slider in the limiting groove.

[0009] In some embodiments, the limiting groove is an inverted T-shaped groove; the limiting slider is a Z-shaped slider, the Z-shaped slider includes a sliding part located at the lower part biased to one side, and a limiting part located at the upper part biased to the other side, the sliding part is arranged toward the inside of the limiting groove, and slidingly cooperates with the bottom of the inverted T-shaped groove, and the limiting part is arranged toward the outside of the limiting groove, and is used to limit the installation template.

[0010] In some embodiments, a plurality of template grooves are arranged side by side on the shell body, reinforcing ribs are arranged between the plurality of template grooves, and the limiting grooves are arranged on the reinforcing ribs.

[0011] In some embodiments, the limiting groove on the reinforcing rib is a through groove structure, and the limiting grooves of the through groove structure are respectively connected to the template grooves on both sides; on both sides of the reinforcing rib, two groups of adjacent limiting components share a limiting groove.

[0012] In some embodiments, the length of the limit slider is set such that the total length of a limit slider plus the length of a sliding portion is less than the width of the reinforcing rib.

[0013] In some embodiments, two groups of adjacent limiting assemblies share a thrust block, and both ends of the thrust block are respectively fixedly connected to the limiting sliders, so that the limiting sliders respectively limit the installation templates and prevent the limiting sliders from sliding relative to each other.

[0014] In some embodiments, the thrust block is a rectangular structure with a through hole at each end; a threaded hole is correspondingly provided on the top surface of the sliding portion of the limit slider, and the through holes at both ends of the thrust block are respectively aligned with the threaded holes and connected by bolts; the thickness of the thrust block is equal to the height difference between the limit portion and the sliding portion of the limit slider.

[0015] According to another aspect of the present application, a fuel cell stack is provided, which includes a fuel cell stack shell as described above, wherein the fuel cell stack shell includes a split mounting template and a shell body, and the shell body is used to mount the fuel cell stack and / or fuel cell stack accessories through a mounting structure on the mounting template.

[0016] According to another aspect of the present application, a fuel cell is provided, which includes the above fuel cell stack.

[0017] The technical solution of the present application is provided with a split shell body and a mounting template. The shell body is provided with a template groove inside and / or outside. The mounting template is detachably installed in the template groove, and a mounting structure is provided thereon. The mounting structure can fix the battery stack inside the battery stack or the battery stack accessories outside the battery stack. Since the shell body and the mounting structure of the battery stack shell of the present application are separately provided, for different battery stack mounting structures, the adaptive adjustment and adaptation of the battery stack shell can be completed by only replacing the mounting template, thereby reducing the mold opening cost of the battery stack shell, reducing the manufacturing cost, and improving the platformization and generalization of the battery stack corresponding to the battery stack shell; at the same time, when the mounting structure of the battery stack shell is damaged, it is only necessary to replace a new mounting template without the need to overhaul the entire battery stack shell, thereby reducing the maintenance cost of the battery stack shell or the battery stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram of the explosion structure of a battery stack casing according to an embodiment of the present application is shown;

[0021] Figure 2 A schematic diagram of the axonometric structure of the housing body of the battery stack housing according to an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of the assembled axonometric structure of a fuel cell stack housing according to an embodiment of the present application is shown;

[0023] Figure 4 A schematic diagram of the top view of the battery stack housing according to an embodiment of the present application is shown;

[0024] Figure 5 Shows Figure 4 The schematic diagram of the a-a section is shown;

[0025] Figure 6 A schematic diagram of the axonometric structure of a limit slider of a battery stack housing according to an embodiment of the present application is shown;

[0026] The above drawings include the following reference numerals:

[0027] 1. Shell body; 11. Template groove; 12. Reinforcing rib; 121. Limiting groove; 2. Mounting template; 21. Mounting structure; 3. Thrust block; 4. Limiting slider; 41. Limiting part; 42. Sliding part; 421. Threaded hole; 5. Bolt. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Since fuel cells are used in many scenarios, the appearance and power specifications of the stacks are not the same, which leads to the need for continuous adaptive redesign of the stack shell. The existing installation structures on the stack shell (such as installation bosses, installation recesses or other forms of installation structures, etc.) are cast integrally with the stack shell, lacking the versatility to adapt to different scenarios. Specifically, it has the following disadvantages: 1. For scenarios with different installation structures, it is necessary to design a variety of stack types, resulting in a wide variety of stack shells, which is not conducive to the platformization and generalization of products; 2. If a certain installation structure of the stack shell is wrong, the stack shell needs to be returned to the factory for mold repair or scrapped, resulting in high maintenance costs; 3. For stacks with small differences, it is still necessary to open two sets of molds to cast the stack shell separately, resulting in high manufacturing costs. Figures 1 to 6 An embodiment of a fuel cell stack casing of the present application is schematically shown.

[0034] like Figures 1 to 6 As shown, the present application discloses a battery stack shell, which includes: a shell body 1, wherein a template groove 11 is provided inside and / or outside the shell body 1; a mounting template 2, wherein the mounting template 2 can be detachably mounted in the template groove 11, and a mounting structure 21 is provided on the mounting template 2, wherein the mounting structure 21 is used to fix the battery stack inside the battery stack or the battery stack accessories outside the battery stack.

[0035] Through the above design, the shell body 1 and the mounting structure 21 of the stack shell of the embodiment of the present application are separately arranged. Therefore, for different stack mounting structures, the adaptive adjustment and adaptation of the stack shell can be completed by only replacing the mounting template 2, thereby reducing the mold opening cost of the stack shell, reducing the manufacturing cost, and improving the platformization and generalization of the stack corresponding to the stack shell; at the same time, when the mounting structure 21 of the stack shell is damaged, only a new mounting template 2 needs to be replaced without the need to overhaul the stack shell as a whole, thereby reducing the maintenance cost of the stack shell or the stack.

[0036] In some embodiments of the present application, the mounting template 2 is conformed to the template groove 11, and the two are in close contact to achieve a seamless fixed connection, thereby improving the stability of the mounting structure 21. For ease of installation, the top corners of the mounting template 2 are set as chamfered structures to avoid installation inconveniences caused by processing tolerances.

[0037] The form of the mounting structure 21 on the mounting template 2 is not unique, and can be a mounting boss, a mounting recess, or other forms of mounting structures, as long as the corresponding mounted structure can be assembled. The mounting structure 21 can be provided with one or more, and the position and quantity depend on the mounted structure. The mounting structure 21 and the mounted structure can be provided with a snap-on connection, and the connection is achieved by snap-on, or the mounting structure 21 on the mounting template 2 and the mounted structure can be provided with a screw connection, and an external thread or a threaded hole is provided on the mounting structure 21 to achieve a threaded connection. Of course, other connection methods are also possible, which will not be described one by one here.

[0038] In some embodiments of the present application, the battery stack housing is a combined housing structure. The housing body 1 is composed of six plates, including two end plates and four side plates. Each end plate and each side plate can be provided with a template groove 11 to connect the installation template 2 for fixing the battery stack or battery stack accessories. In the embodiments of the present application, Figures 1 to 5 The structure shown is a side plate of the housing body 1 .

[0039] In some embodiments of the present application, Figures 1 to 6 As shown, at least one side of the template groove 11 is provided with a limiting component. The limiting component includes: a limiting groove 121, a limiting slider 4 and a thrust block 3. A limiting groove 121 is provided on the shell body 1 beside the template groove 11, and the limiting groove 121 is connected to the template groove 11. The limiting slider 4 slides with the limiting groove 121 and can extend out of the limiting groove 121 to limit the installation template 2 to prevent the installation template 2 from coming out. The thrust block 3 stops the limiting slider 4 in the limiting groove 121 so that it fixes the installation template 2. Through the sliding cooperation between the limiting slider 4 and the limiting groove 121, the assembly of the installation template 2 can be convenient and fast, and the assembly efficiency is improved. In the embodiment of the present application, the limiting slider 4 limits the installation template 2 by blocking the surface of the installation template 2. In some other embodiments of the present application, the limiting slider 4 can also be embedded in the installation template 2 to limit the installation template 2. The specific form of achieving the limit can be determined according to the actual installation conditions such as the structure and thickness of the installation template 2. In the embodiment of the present application, the limiting groove 121 is integrally formed with the shell body 1, or is formed by secondary processing. Alternatively, in some other embodiments of the present application, the limiting groove 121 can also be designed separately from the shell body 1, and the limiting groove 121 is installed and fixed to the shell body 1 during assembly.

[0040] In some embodiments of the present application, Figures 1 to 4 As shown, corresponding to one installation template 2, multiple sets of limit assemblies can be provided to enhance the connection stability of the installation template 2. Understandably, in the design of the limit assembly, it is preferred that the limit slider 4 can be completely slid into the limit groove 121, thereby avoiding interference with the disassembly and maintenance of the installation template 2 and improving the assembly efficiency of the battery stack shell.

[0041] In some embodiments of the present application, the thrust block 3 that fixes the limit slider 4 can be fixed by blocking the remaining space of the limit groove 121. For example, the thrust block 3 is blocked in the limit groove 121 inside the limit slider 4, thereby preventing the limit slider 4 from sliding in the limit groove 121. Alternatively, the thrust block 3 can also be placed in a fixed connection with the limit slider 4 to prevent the limit slider 4 from sliding in the limit groove 121.

[0042] In some embodiments of the present application, Figure 2 As shown, the limiting groove 121 is an inverted T-shaped groove. Figure 4 and Figure 6 As shown, the limit slider 4 is a Z-shaped slider, which includes a sliding portion 42 located at the lower part biased to one side, and a limit portion 41 located at the upper part biased to the other side. The sliding portion 42 is arranged toward the inside of the limit groove 121, and slides with the bottom of the inverted T-shaped groove. The limit portion 41 is arranged toward the outside of the limit groove 121, and is used to limit the installation template 2. Among them, the bottom surface of the limit portion 41 is just above the installation template 2, which can limit the installation template 2 from coming out. The size of the limit portion 41 is smaller than the size of the sliding portion 42, and matches the size of the upper groove of the inverted T-shaped groove, so that the limit slider 4 can slide smoothly in the limit groove 121.

[0043] In some embodiments of the present application, Figures 1 to 4 As shown, a plurality of template grooves 11 are arranged side by side on the shell body 1 , reinforcing ribs 12 are arranged between the plurality of template grooves 11 , and the limiting grooves 121 are arranged on the reinforcing ribs 12 .

[0044] In some embodiments of the present application, Figures 1 to 4 As shown, the limiting groove 121 on the reinforcing rib 12 is a through groove structure, and the limiting groove 121 of the through groove structure is respectively connected to the template grooves 11 on both sides. On both sides of the reinforcing rib 12, two groups of adjacent limiting components share a limiting groove 121 of the through groove structure. This design can simplify the structure of the limiting component, make the limiting component compact and reduce the occupied area, reduce the manufacturing cost and improve the assembly efficiency.

[0045] In some embodiments of the present application, Figures 1 to 4 As shown, the length of the limit slider 4 is set to: the total length of one limit slider 4 plus the length of one sliding portion 42 is less than the width of the reinforcing rib 12. With such a length design, after the limit slider 4 on one side is clamped on the installation template 2, the limit slider 4 on the other side can be completely retracted into the reinforcing rib 12, thereby ensuring that the installation template 2 on this side can be smoothly placed in the corresponding template groove 11 without interfering with the assembly of the installation template 2.

[0046] In some embodiments of the present application, Figure 4 and Figure 5 As shown, two groups of adjacent limiting assemblies share a thrust block 3, and both ends of the thrust block 3 are fixedly connected to the limiting slider 4, so that the limiting slider 4 limits the installation template 2 and prevents the limiting slider 4 from sliding relative to each other.

[0047] In some embodiments of the present application, specific reference is made to Figure 1 Exploded view and Figure 5 As shown in the cross-sectional view, the thrust block 3 is a rectangular parallelepiped structure, with through holes at both ends. The top surface of the sliding portion 42 of the limit slider 4 is correspondingly provided with a threaded hole 421, and the through holes at both ends of the thrust block 3 are aligned with the threaded holes 421 respectively, and are connected by bolts 5, so that the thrust block 3 is respectively fixed to the limit sliders 4 on both sides, preventing the limit sliders 4 from sliding, and realizing the limited assembly of the installation template 2. In some embodiments of the present application, the thickness of the thrust block 3 is equal to the height difference between the limit portion 41 and the sliding portion 42 in the limit slider 4, so that the top surface of the thrust block 3 is flush with the top surface of the limit slider 4, which can ensure the flatness of the surfaces of the two. Of course, in some other embodiments of the present application, the top surface of the thrust block 3 can also be designed to be lower or higher than the top surface of the limit slider 4, depending on the actual structure and scene usage needs.

[0048] Combination Figures 1 to 6 As shown, the process of installing the split installation template 2 on the shell body 1 of the embodiment of the present application is introduced:

[0049] First, place the installation template 2 on the left side into the template groove 11 on the left side, and then insert the left limit slider 4 along the limit groove 121 to the left end. At this time, the limit part 41 of the left limit slider 4 is located above the installation template 2 on the left side to prevent it from slipping out. Then, insert the limit slider 4 on the right side symmetrically into the limit groove 121, and push it to the left to the limit slider 4 on the left side. At this time, the limit slider 4 on the right side is completely inside the reinforcing rib 12. Then, place the installation template 2 on the right side into the corresponding template groove 11, and then move the limit slider 4 on the right side to the right until its limit part 41 is located above the installation template 2, so as to limit the installation template 2 on the right side. Finally, tighten the thrust block 3 to the threaded holes 421 of the left and right limit sliders 4 with bolts 5 to prevent the left and right limit sliders 4 from sliding. By providing such a structure for each vertical reinforcing rib 12, each mounting template 2 is fixed by multiple groups of limiting components, so as to improve the strength of the mounting template 2 in supporting the installation of parts such as the water pump, FCU and PTC heater.

[0050] In the embodiment of the present application, if the mounting structure 21 of the mounting template 2 needs to be repaired or adjusted, it is only necessary to design the mounting template 2 of the corresponding area without replacing the battery stack shell as a whole. Since the mounting template 2 is smaller in size than the battery stack shell, its production cycle and cost are reduced, and it is also easier to produce.

[0051] The present application also discloses a fuel cell stack, which includes a fuel cell stack shell as described in the above embodiments, and the fuel cell stack shell includes a split mounting template 2 and a shell body 1. The shell body 1 is used to mount the fuel cell stack and / or fuel cell stack accessories through the mounting structure 21 on the mounting template 2. The fuel cell stack of the fuel cell stack includes core components such as cathode plates, anode plates, chip structures, hydrogen and air intake and exhaust structures, and end plates.

[0052] The present application also discloses a fuel cell, which includes a stack as described in the above embodiment, wherein the stack accessories installed by the split installation template 2 include a water pump, an FCU, a PTC heater, a thermostat, a radiator and other stack peripheral structures.

[0053] In summary, the embodiment of the battery stack shell of the present application is provided with a split shell body and a mounting template, the shell body is used to accommodate the battery stack composed of the electrode plate and the membrane electrode, the shell body is provided with a template groove inside and / or outside, the mounting template is detachably installed in the template groove, and a mounting structure is provided thereon, and the mounting structure can fix the battery stack inside the battery stack or the battery stack accessories outside the battery stack. Since the shell body and the mounting structure of the battery stack shell of the present application are separately provided, for different battery stack mounting structures, the adaptive adjustment and adaptation of the battery stack shell can be completed by only replacing the mounting template, thereby reducing the mold opening cost of the battery stack shell, reducing the manufacturing cost, and improving the platformization and generalization of the battery stack corresponding to the battery stack shell; at the same time, when the mounting structure of the battery stack shell is damaged, only a new mounting template needs to be replaced, without the need to overhaul the battery stack shell as a whole, thereby reducing the maintenance cost of the battery stack shell or the battery stack.

[0054] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery stack casing, characterized in that: include: A shell body (1), wherein a template groove (11) is provided inside and / or outside the shell body (1); The mounting template (2) is removably mounted in the template groove (11), and a mounting structure (21) is provided on the mounting template (2), and the mounting structure (21) is used to fix the battery stack inside the battery stack or the battery stack accessories outside the battery stack.

2. The stack casing according to claim 1, characterized in that: A limiting component is provided on at least one side of the template groove (11), and the limiting component comprises: a limiting groove (121), a limiting slider (4) and a thrust block (3); the limiting groove (121) is provided on the shell body (1) beside the template groove (11), the limiting groove (121) is connected to the template groove (11), the limiting slider (4) is slidably matched with the limiting groove (121), and can extend out of the limiting groove (121) to limit the installation template (2), and the thrust block (3) is used to stop the limiting slider (4) in the limiting groove (121).

3. The stack casing according to claim 2, characterized in that: The limiting groove (121) is an inverted T-shaped groove; the limiting slider (4) is a Z-shaped slider, the Z-shaped slider comprises a sliding portion (42) located at the lower part towards one side, and a limiting portion (41) located at the upper part towards the other side, the sliding portion (42) is arranged towards the inside of the limiting groove (121) and is slidably matched with the bottom of the inverted T-shaped groove, and the limiting portion (41) is arranged towards the outside of the limiting groove (121) and is used to limit the installation template (2).

4. The stack casing according to claim 3, characterized in that: A plurality of the template grooves (11) are arranged side by side on the shell body (1), reinforcing ribs (12) are arranged between the plurality of template grooves (11), and the limiting grooves (121) are arranged on the reinforcing ribs (12).

5. The stack casing according to claim 4, characterized in that: The limiting groove (121) on the reinforcing rib (12) is a through groove structure, and the limiting groove (121) of the through groove structure is respectively connected to the template grooves (11) on both sides; on both sides of the reinforcing rib (12), two groups of adjacent limiting components share one limiting groove (121).

6. The stack casing according to claim 5, characterized in that: The length of the limiting slider (4) is set such that the total length of one limiting slider (4) plus the length of one sliding portion (42) is less than the width of the reinforcing rib (12).

7. The stack casing according to claim 5, characterized in that: Two groups of adjacently arranged limit assemblies share a thrust block (3), and both ends of the thrust block (3) are respectively fixedly connected to the limit slider (4), so that the limit slider (4) respectively limits the installation template (2), and the thrust block (3) prevents the limit slider (4) from sliding relative to each other.

8. The stack casing according to claim 7, characterized in that: The thrust block (3) is a rectangular parallelepiped structure, with through holes at both ends; a threaded hole (421) is correspondingly provided on the top surface of the sliding portion (42) of the limiting slider (4); the through holes at both ends of the thrust block (3) are respectively aligned with the threaded holes (421) and are connected by bolts (5); the thickness of the thrust block (3) is equal to the height difference between the limiting portion (41) and the sliding portion (42) in the limiting slider (4).

9. A battery stack, characterized in that: It comprises a battery stack shell as described in any one of claims 1 to 8, wherein the battery stack shell comprises a split mounting template (2) and a shell body (1), and the shell body (1) is used to install a battery stack and / or battery stack accessories through a mounting structure (21) on the mounting template (2).

10. A fuel cell, characterized in that: Comprising the battery stack as claimed in claim 9.

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