Electric pile packaging device

Abstract

The utility model provides a galvanic pile packaging device which comprises a reactor core, two end plates, an elastic component and a steel belt, the two end plates are respectively positioned on two opposite sides of the reactor core, the steel belt binds the reactor core and the two end plates, and the elastic component is positioned between the steel belt and the first one of the two end plates; the main lifting mechanism is arranged between the elastic component and the steel belt or between the steel belt and the second one of the two end plates, and the main lifting mechanism is movably arranged in the vertical direction, so that the length of the elastic component is adjusted by adjusting the distance between the elastic component and the steel belt, and the packaging force on the reactor core is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell stack packaging, and more specifically, to a stack packaging device. Background Art

[0002] A fuel cell stack is the core device of a fuel cell. The stack is mainly assembled from membrane electrode assemblies, bipolar plates, seals, etc. Hydrogen fuel cells need to be packaged and assembled accordingly before actual operation. The existing packaging methods mainly include screw packaging, box packaging, and steel belt packaging.

[0003] Steel belt packaging can reduce the thickness and weight of the end plate while applying a more uniform pressing force on the end plate. Usually, welding is used to fasten the end plate. However, the steel belt after welding cannot be disassembled and assembled. In terms of technology, the method of cutting the steel belt and then repackaging the fuel cell stack can be used to reuse the fuel cell stack to improve the performance of the fuel cell. However, when mass production is required, repackaging the fuel cell stack will surely increase the cost of the fuel cell, and the process of repackaging is cumbersome and the production efficiency is low.

[0004] Box packaging and screw packaging achieve the adjustment of the packaging force after stack packaging by adding additional end plates or backing plates. However, this packaging method requires the added parts to have a large volume and heavy weight, which easily leads to a decrease in the energy density of the stack, and large auxiliary equipment such as a press is required when adjusting the packaging force.

[0005] Therefore, the above-mentioned packaging methods have the following disadvantages:

[0006] (1) After the newly assembled fuel cell stack undergoes the performance test before leaving the factory (FAT), its packaging force will decay below the design value, resulting in a decrease in the performance of the stack.

[0007] (2) After the fuel cell stack is installed in a vehicle and undergoes a long period of operation, the packaging force of the stack will further decrease later, resulting in a decrease in the performance of the fuel cell.

[0008] (3) The adjustment of the packaging force of the stack is not convenient enough and the monitoring of the packaging force of the stack cannot be achieved, and it cannot be effectively solved by means such as changing the production process. Summary of the Utility Model

[0009] The main purpose of the utility model is to provide a stack packaging device to solve the problem that the adjustment of the packaging force of the stack in the prior art is not convenient enough.

[0010] To achieve the above object, according to one aspect of the present utility model, a stack packaging device is provided, including: a stack core, two end plates, an elastic member, and a steel belt. The two end plates are respectively located on opposite sides of the stack core. The steel belt binds the stack core and the two end plates. The elastic member is located between the steel belt and the first of the two end plates; a main lifting mechanism, the main lifting mechanism is arranged between the elastic member and the steel belt or the main lifting mechanism is arranged between the steel belt and the second of the two end plates. The main lifting mechanism is movably arranged in the vertical direction to adjust the length of the elastic member by adjusting the distance between the elastic member and the steel belt, so as to adjust the packaging force on the stack core.

[0011] Further, the stack packaging device includes: an auxiliary lifting mechanism, the auxiliary lifting mechanism is arranged between the steel belt and the second of the two end plates or the auxiliary lifting mechanism is arranged between the elastic member and the steel belt. The auxiliary lifting mechanism is movably arranged in the vertical direction.

[0012] Further, a compression cap is located between the main lifting mechanism and the steel belt; the two relatively movable ends of the displacement indicator are respectively connected to the compression cap and the first of the two end plates or the two relatively movable ends of the displacement indicator are respectively connected to the opposite ends of the elastic member, so as to detect and display the telescopic amount of the elastic member in real time.

[0013] Further, the stack packaging device includes a compression cap, and the compression cap is located between the main lifting mechanism and the steel belt; the main lifting mechanism is arranged between the compression cap and the elastic member; the main lifting mechanism includes two cushion blocks, a connecting shaft, a wedge block, and an adjusting fastener. Among them, the two cushion blocks are respectively connected to the compression cap and the elastic member. One of the two cushion blocks is fixedly connected to the connecting shaft, and the other of the two cushion blocks is movably connected to the connecting shaft. An avoidance hole for avoiding the connecting shaft is provided on the elastic member; the wedge block is located between the two cushion blocks, and the wedge block is connected to the connecting shaft through the adjusting fastener, so as to adjust the position of the wedge block in the direction perpendicular to the axis of the connecting shaft by rotating the adjusting fastener, so as to adjust the distance between the two cushion blocks.

[0014] Further, first conical surfaces are respectively arranged on opposite sides of the wedge block, and the distance between the two first conical surfaces gradually decreases in the direction close to the axis of the connecting shaft; a second conical surface for cooperating with the corresponding first conical surface is arranged on the side of each cushion block close to the wedge block.

[0015] Further, the auxiliary lifting mechanism is arranged between the steel belt and the second of the two end plates; the auxiliary lifting mechanism includes a second cushion block, two second wedge blocks, and a second adjusting fastener; among them, the second cushion block is connected to the steel belt, the two second wedge blocks are located between the second cushion block and the second of the two end plates, and the second adjusting fastener is penetrated through the two second wedge blocks to adjust the distance between the two second wedge blocks, so as to adjust the distance between the second cushion block and the second of the two end plates.

[0016] Further, each of the second wedges includes a first inclined surface and a first flat surface. The first inclined surface is located on the side of the first flat surface close to the cushion block, and the distance between the first inclined surface and the first flat surface gradually decreases in the direction close to another second wedge. A second inclined surface for cooperating with the corresponding first inclined surface is provided on the side of the cushion block close to the wedge.

[0017] Further, the displacement indicator includes two watchbands, a central gear, a dial, and a pointer. Rack teeth extending along the lifting direction of the main lifting mechanism are provided on each of the watchbands. The central gear is located between the rack teeth of the two watchbands to drive the central gear to rotate through the movement in the lifting direction between the rack teeth of the two watchbands. Index scales are provided on the dial. The first end of the pointer is located at the center of the dial, and the second end of the pointer is arranged towards the edge of the dial. The central gear is connected to the first end of the pointer to drive the pointer to rotate.

[0018] Further, one watchband of the displacement indicator is arranged on the compression cap, and the other watchband of the displacement indicator is arranged on the first of the end plates; and / or the two watchbands of the displacement indicator are respectively arranged at opposite ends of the elastic member.

[0019] Further, the number of the main lifting mechanisms is one, or the number of the main lifting mechanisms is multiple, and the multiple main lifting mechanisms are arranged at intervals along the extending direction of the end plate; the elastic member includes at least one disc spring.

[0020] Applying the technical solution of the present utility model, the fuel cell stack packaging device of the present utility model includes: a stack core, two end plates, an elastic member, and a steel belt. The two end plates are respectively located on opposite sides of the stack core. The steel belt binds the stack core and the two end plates. The elastic member is located between the steel belt and the first of the two end plates. A main lifting mechanism is arranged between the elastic member and the steel belt or the main lifting mechanism is arranged between the steel belt and the second of the two end plates. The main lifting mechanism is movably arranged in the vertical direction to adjust the length of the elastic member by adjusting the distance between the elastic member and the steel belt, so as to adjust the packaging force on the stack core. In this way, the fuel cell stack packaging device of the present utility model simplifies the adjustment process of the packaging force without changing the existing fuel cell stack packaging method by arranging a plurality of lifting structures on the elastic member or the steel belt, and can effectively solve the problem that the adjustment of the force for packaging the fuel cell stack in the prior art is not convenient enough. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0022] Figure 1Shows a schematic diagram of the overall structure of the stack packaging device according to an embodiment of the present utility model when the main lifting mechanism and the auxiliary lifting mechanism are not included;

[0023] Figure 2 Shows a schematic diagram of the overall structure of the stack packaging device according to an embodiment of the present utility model when the main lifting mechanism is included;

[0024] Figure 3 Shows a schematic diagram of the overall structure of the stack packaging device according to an embodiment of the present utility model when the auxiliary lifting mechanism is included;

[0025] Figure 4 Shows a schematic diagram of the overall structure of the main lifting mechanism according to the present utility model;

[0026] Figure 5 Shows an exploded view of the main lifting mechanism according to the present utility model;

[0027] Figure 6 Shows a schematic diagram of the overall structure of the auxiliary lifting mechanism according to the present utility model;

[0028] Figure 7 Shows an exploded view of the auxiliary lifting mechanism according to the present utility model;

[0029] Figure 8 Shows a schematic diagram of the overall structure of the displacement indicator according to the present utility model in one direction;

[0030] Figure 9 Shows a schematic diagram of the overall structure of the displacement indicator according to the present utility model in another direction.

[0031] Among them, the above-mentioned drawings include the following reference numerals:

[0032] 1, stack core; 2, end plate; 3, elastic member; 4, steel strip; 5, main lifting mechanism; 6, auxiliary lifting mechanism; 7, compression cap; 8, displacement indicator; 9, spacer; 10, connecting shaft; 11, wedge block; 12, adjusting fastener; 13, first conical surface; 14, second conical surface; 15, second spacer; 16, second wedge block; 17, first inclined surface; 18, first plane; 19, second inclined surface; 20, watch band; 21, dial; 22, pointer; 23, axis gear; 24, rack; 25, guide post; 26, guide post groove; 27, toroidal surface; 28, connecting surface; 29, second adjusting fastener. Detailed implementation manners

[0033] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0034] AsFigures 1 to 9 As shown in the figure, the present utility model provides a stack packaging device, which includes: a stack core 1, two end plates 2, an elastic member 3, and a steel strip 4. The two end plates 2 are respectively located on opposite sides of the stack core 1. The steel strip 4 binds the stack core 1 and the two end plates 2. The elastic member 3 is located between the steel strip 4 and the first of the two end plates 2; a main lifting mechanism 5, the main lifting mechanism 5 is arranged between the elastic member 3 and the steel strip 4 or the main lifting mechanism 5 is arranged between the steel strip 4 and the second of the two end plates 2. The main lifting mechanism 5 is movably arranged in the vertical direction to adjust the length of the elastic member 3 by adjusting the distance between the elastic member 3 and the steel strip 4, so as to adjust the packaging force on the stack core 1.

[0035] In this way, the stack packaging device of the present utility model simplifies the adjustment process of the packaging force without changing the existing stack packaging method by arranging a lifting structure on the elastic member 3 or the steel strip 4, and can effectively solve the problem that the adjustment of the force for stack packaging in the prior art is not convenient enough.

[0036] In the first embodiment of the stack packaging device of the present utility model, the stack packaging device includes a main lifting mechanism 5, and the main lifting mechanism 5 is arranged between the elastic member 3 and the steel strip 4.

[0037] In the second embodiment of the stack packaging device of the present utility model, the stack packaging device includes a main lifting mechanism 5, and the main lifting mechanism 5 is arranged between the steel strip 4 and the second of the two end plates 2.

[0038] As Figure 3 shown, the stack packaging device includes: an auxiliary lifting mechanism 6, the auxiliary lifting mechanism 6 is arranged between the steel strip 4 and the second of the two end plates 2 or the auxiliary lifting mechanism 6 is arranged between the elastic member 3 and the steel strip 4. The auxiliary lifting mechanism 6 is movably arranged in the vertical direction.

[0039] In the third embodiment of the stack packaging device of the present utility model, the stack packaging device includes a main lifting mechanism 5 and an auxiliary lifting mechanism 6. The main lifting mechanism 5 is arranged between the steel strip 4 and the second of the two end plates 2, and the auxiliary lifting mechanism 6 is arranged between the elastic member 3 and the steel strip 4.

[0040] In the fourth embodiment of the stack packaging device of the present utility model, the stack packaging device includes a main lifting mechanism 5 and an auxiliary lifting mechanism 6. The main lifting mechanism 5 is arranged between the elastic member 3 and the steel strip 4, and the auxiliary lifting mechanism 6 is arranged between the steel strip 4 and the second of the two end plates 2.

[0041] As Figure 2 and Figure 3As shown in the figure, the stack packaging device includes: a pressure cap 7, the pressure cap 7 being located between the main lifting mechanism 5 and the steel belt 4; a displacement indicator 8, with the two relatively movable ends of the displacement indicator 8 being respectively connected to the pressure cap 7 and the first of the two end plates 2, or the two relatively movable ends of the displacement indicator 8 being respectively connected to the opposite ends of the elastic member 3, so as to be used for detecting and displaying the telescopic amount of the elastic member 3 in real time.

[0042] As Figure 4 and Figure 5 shown in the figure, the stack packaging device includes a pressure cap 7, the pressure cap 7 being located between the main lifting mechanism 5 and the steel belt 4; the main lifting mechanism 5 is arranged between the pressure cap 7 and the elastic member 3; the main lifting mechanism 5 includes two cushion blocks 9, a connecting shaft 10, a wedge block 11 and an adjusting fastener 12. Among them, the two cushion blocks 9 are respectively connected to the pressure cap 7 and the elastic member 3, one of the two cushion blocks 9 is fixedly connected to the connecting shaft 10, the other of the two cushion blocks 9 is movably connected to the connecting shaft 10, and an avoidance hole for avoiding the connecting shaft 10 is arranged on the elastic member 3; the wedge block 11 is located between the two cushion blocks 9, and the wedge block 11 is connected to the connecting shaft 10 through the adjusting fastener 12, so as to adjust the position of the wedge block 11 in the direction perpendicular to the axis of the connecting shaft 10 by rotating the adjusting fastener 12, so as to adjust the distance between the two cushion blocks 9.

[0043] In the first embodiment of the main lifting mechanism 5 of the present utility model, the number of the wedge blocks 11 of the main lifting mechanism 5 is two, and the two wedge blocks 11 are symmetrically arranged between the two cushion blocks 9 with respect to the axis of the connecting shaft 10.

[0044] In the second embodiment of the main lifting mechanism 5 of the present utility model, the number of the wedge blocks 11 of the main lifting mechanism 5 is four, and the four wedge blocks 11 are evenly arranged around the circumference of the connecting shaft 10 between the two cushion blocks 9.

[0045] In the third embodiment of the main lifting mechanism 5 of the present utility model, the number of the wedge blocks 11 of the main lifting mechanism 5 is six, and the six wedge blocks 11 are evenly arranged around the circumference of the connecting shaft 10 between the two cushion blocks 9.

[0046] In the fourth embodiment of the main lifting mechanism 5 of the present utility model, the number of the wedge blocks 11 of the main lifting mechanism 5 is eight, and the eight wedge blocks 11 are evenly arranged around the circumference of the connecting shaft 10 between the two cushion blocks 9.

[0047] As Figures 4 to 5 shown in the figure, the opposite sides of the wedge block 11 are respectively provided with first conical surfaces 13, and the distance between the two first conical surfaces 13 gradually decreases along the direction approaching the axis of the connecting shaft 10; a second conical surface 14 for cooperating with the corresponding first conical surface 13 is arranged on one side of each cushion block 9 close to the wedge block 11.

[0048] Specifically, the first conical surface 13 includes two concentric circular arcs. The angle between the first conical surface 13 and the surface of the spacer 9 on the side away from the wedge 11 is 15° to 60°. The outer diameter of the first conical surface 13 is greater than the outer diameter of the elastic member 3, and the inner diameters of both the first conical surface 13 and the elastic member 3 are greater than the outer diameter of the connecting shaft 10. The wedge 11 further includes two annular surfaces 27. The opposite ends of one annular surface 27 are respectively connected to the outer sides of the two first conical surfaces 13 of the wedge 11, and the opposite ends of the other annular surface 27 are respectively connected to the inner sides of the two first conical surfaces 13 of the wedge 11. The wedge 11 further includes two connecting surfaces 28, and each connecting surface 28 is connected to the two first conical surfaces 13 and the two annular surfaces 27 to jointly form the wedge 11. Threaded holes are provided on both the connecting shaft 10 and the wedge 11 for the adjusting fastener 12 to pass through, so as to adjust the distance between one of the two spacers 9 close to the elastic member 3 and the corresponding end plate 2 by tightening the adjusting fastener 12.

[0049] As Figures 6 to 7 shown, the auxiliary lifting mechanism 6 is arranged between the steel belt 4 and the second of the two end plates 2. The auxiliary lifting mechanism 6 includes a second spacer 15, two second wedges 16 and a second adjusting fastener 29. Among them, the second spacer 15 is connected to the steel belt 4, the two second wedges 16 are located between the second spacer 15 and the second of the two end plates 2, and the second adjusting fastener 29 is passed through the two second wedges 16 to adjust the distance between the two second wedges 16, so as to adjust the distance between the second spacer 15 and the second of the two end plates 2.

[0050] Specifically, each second wedge 16 includes a first inclined surface 17 and a first flat surface 18. The first inclined surface 17 is located on the side of the first flat surface 18 close to the second spacer 15, and the distance between the first inclined surface 17 and the first flat surface 18 gradually decreases along the direction close to the other second wedge 16. A second inclined surface 19 for cooperating with the corresponding first inclined surface 17 is provided on the side of the second spacer 15 close to the second wedge 16.

[0051] As Figures 6 to 7 shown, the first inclined surface 17 is provided on the side of the second wedge 16 close to the second spacer 15. The angle between the first inclined surface 17 and the first flat surface 18 is 15° to 60°. The first flat surface 18 is provided on the side of the second wedge 16 away from the second spacer 15 to form the second wedge 16. A threaded hole is provided on the second wedge 16 for the second adjusting fastener 29 to pass through. The distance between the second spacer 15 and the corresponding end plate 2 is adjusted by tightening the second adjusting fastener 29. A guide post 25 is provided on the first inclined surface 17, and a guide post groove 26 is provided on the second spacer 15. The guide post 25 and the guide post groove 26 are inserted and matched with each other to prevent relative side slip between the second wedge 16 and the second spacer 15.

[0052] In this way, the stack packaging device of the present application is provided with a main lifting mechanism 5 and an auxiliary lifting mechanism 6. The packaging force of the stack is adjusted by tightening the adjusting fastener 12 and / or the second adjusting fastener 29, and it is not necessary to remove the stack from the engine, which greatly improves the working efficiency.

[0053] As Figure 8 and Figure 9 shown, the displacement indicator 8 includes two watchbands 20, an axle gear 23, a dial 21 and a pointer 22; racks 24 extending along the lifting direction of the main lifting mechanism 5 are provided on each watchband 20, and the axle gear 23 is located between the racks 24 of the two watchbands 20 to drive the axle gear 23 to rotate through the movement in the lifting direction between the racks 24 of the two watchbands 20; indicating scales are provided on the dial 21, the first end of the pointer 22 is located at the center of the dial 21, the second end of the pointer 22 is arranged towards the edge of the dial 21, and the axle gear 23 is connected to the first end of the pointer 22 to drive the pointer 22 to rotate.

[0054] Specifically, one watchband 20 of the displacement indicator 8 is arranged on the compression cap 7, and the other watchband 20 of the displacement indicator 8 is arranged on the first of the end plates 2; and / or the two watchbands 20 of the displacement indicator 8 are respectively arranged at opposite ends of the elastic member 3.

[0055] In the first embodiment of the displacement indicator 8 of the present utility model, the number of the displacement indicators 8 is one. One watchband 20 of the displacement indicator 8 is arranged on the compression cap 7, and the other watchband 20 is arranged on the first of the end plates 2.

[0056] In the second embodiment of the displacement indicator 8 of the present utility model, the number of the displacement indicators 8 is one. The two watchbands 20 of the displacement indicator 8 are respectively arranged at opposite ends of the elastic member 3.

[0057] In the third embodiment of the displacement indicator 8 of the present utility model, the number of the displacement indicators 8 is two. One watchband 20 of one displacement indicator 8 is arranged on the compression cap 7 and the other watchband 20 is arranged on the first of the end plates 2, and the two watchbands 20 of the other displacement indicator 8 are respectively arranged at opposite ends of the elastic member 3.

[0058] The displacement indicator 8 provided in the present application can display the length of the disc spring in real time, and the packaging force of the fuel cell stack is adjusted in real time by monitoring the change amount of the displacement in the dial 21, so that the stack reaches the best working state.

[0059] Preferably, the number of the main lifting mechanisms 5 is one, or the number of the main lifting mechanisms 5 is multiple, and the multiple main lifting mechanisms 5 are arranged at intervals along the extending direction of the end plate 2; the elastic member 3 includes at least one disc spring.

[0060] Optionally, the number of the auxiliary lifting mechanisms 6 is one or more.

[0061] Optionally, the number of the displacement indicators 8 is one or more. In summary, the fuel cell stack packaging device of the present utility model solves the problem in the prior art that the force adjustment for fuel cell stack packaging is not convenient enough. By arranging simple lifting mechanisms on both sides of the steel belt 4, the process of replacing and cutting the steel belt and re-packaging in the existing production process is simplified, the adjustment efficiency is improved, the workload of manual labor is reduced, and the one-time use cost of the steel belt is reduced. Under the condition of no auxiliary equipment, the packaging force of the fuel cell stack can be adjusted without disassembling the engine, the maintenance cost of the fuel cell stack is reduced, the service life of the fuel cell stack is extended, and the displacement indicator 8 arranged can monitor the packaging force of the fuel cell stack, so that the packaging force of the fuel cell stack can be adjusted in real time during the use of the engine in the machine, so that the machine can exert the best performance.

[0062] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0063] The fuel cell stack packaging device of the present utility model includes: a stack core 1, two end plates 2, an elastic member 3, and a steel belt 4. The two end plates 2 are respectively located on opposite sides of the stack core 1. The steel belt 4 binds the stack core 1 and the two end plates 2. The elastic member 3 is located between the steel belt 4 and the first of the two end plates 2; a main lifting mechanism 5 is arranged between the elastic member 3 and the steel belt 4 or the main lifting mechanism 5 is arranged between the steel belt 4 and the second of the two end plates 2. The main lifting mechanism 5 is movably arranged in the vertical direction to adjust the length of the elastic member 3 by adjusting the distance between the elastic member 3 and the steel belt 4, so as to adjust the packaging force on the stack core 1. In this way, the fuel cell stack packaging device of the present utility model simplifies the adjustment process of the packaging force by arranging a plurality of lifting structures on the elastic member 3 or the steel belt 4 without changing the existing fuel cell stack packaging method, and can effectively solve the problem that the force adjustment for fuel cell stack packaging in the prior art is not convenient enough.

[0064] 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, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0066] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0067] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0068] In addition, it should be noted that the use of terms such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0069] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electric stack packaging device, characterized in that, Comprising: A core (1), two end plates (2), an elastic member (3) and a steel strip (4), wherein the two end plates (2) are respectively located on opposite sides of the core (1), the steel strip (4) binds the core (1) and the two end plates (2), and the elastic member (3) is located between the steel strip (4) and the first of the two end plates (2); A main lifting mechanism (5), the main lifting mechanism (5) is arranged between the elastic member (3) and the steel strip (4) or the main lifting mechanism (5) is arranged between the steel strip (4) and the second of the two end plates (2), and the main lifting mechanism (5) is arranged to be vertically movable to adjust the length of the elastic member (3) by adjusting the distance between the elastic member (3) and the steel strip (4), so as to adjust the encapsulation force on the core (1).

2. The stack packaging device according to claim 1, characterized in that The stack encapsulation device comprises: an auxiliary lifting mechanism (6), the auxiliary lifting mechanism (6) is arranged between the steel strip (4) and the second of the two end plates (2) or the auxiliary lifting mechanism (6) is arranged between the elastic member (3) and the steel strip (4), and the auxiliary lifting mechanism (6) is arranged to be vertically movable.

3. The stack encapsulation device according to claim 1, wherein The stack encapsulation device comprises: A pressure cap (7), the pressure cap (7) is located between the main lifting mechanism (5) and the steel strip (4); A displacement indicator (8), the two relatively movable ends of the displacement indicator (8) are respectively connected to the pressure cap (7) and the first of the two end plates (2) or the two relatively movable ends of the displacement indicator (8) are respectively connected to the opposite ends of the elastic member (3), so as to be used for detecting and displaying the telescopic amount of the elastic member (3) in real time.

4. The fuel cell stack packaging device according to claim 1, characterized in that, The stack encapsulation device comprises a pressure cap (7), the pressure cap (7) is located between the main lifting mechanism (5) and the steel strip (4); the main lifting mechanism (5) is arranged between the pressure cap (7) and the elastic member (3); The main lifting mechanism (5) comprises two cushion blocks (9), a connecting shaft (10), a wedge block (11) and an adjusting fastener (12), wherein, The two cushion blocks (9) are respectively connected to the pressure cap (7) and the elastic member (3), one of the two cushion blocks (9) is fixedly connected to the connecting shaft (10), the other of the two cushion blocks (9) is movably arranged on the connecting shaft (10), and an avoidance hole for avoiding the connecting shaft (10) is arranged on the elastic member (3); The wedge block (11) is located between the two cushion blocks (9), the wedge block (11) is connected to the connecting shaft (10) through the adjusting fastener (12), so as to adjust the position of the wedge block (11) in the direction perpendicular to the axis of the connecting shaft (10) by rotating the adjusting fastener (12), so as to adjust the distance between the two cushion blocks (9).

5. The stack encapsulation device according to claim 4, wherein The opposite sides of the wedge block (11) are respectively provided with first conical surfaces (13), and the distance between the two first conical surfaces (13) gradually decreases along the direction approaching the axis of the connecting shaft (10). One side of each cushion block (9) close to the wedge block (11) is provided with a second conical surface (14) for cooperating with the corresponding first conical surface (13).

6. The stack packaging device according to claim 2, characterized in that, The auxiliary lifting mechanism (6) is arranged between the steel belt (4) and the second one of the two end plates (2); the auxiliary lifting mechanism (6) includes a second cushion block (15), two second wedge blocks (16) and a second adjusting fastener (29); wherein, The second cushion block (15) is connected to the steel belt (4), the two second wedge blocks (16) are located between the second cushion block (15) and the second one of the two end plates (2), and the second adjusting fastener (29) is arranged through the two second wedge blocks (16) to adjust the distance between the two second wedge blocks (16) so as to adjust the distance between the second cushion block (15) and the second one of the two end plates (2).

7. The fuel cell stack packaging device according to claim 6, wherein Each of the second wedge blocks (16) includes a first inclined surface (17) and a first flat surface (18), the first inclined surface (17) is located on the side of the first flat surface (18) close to the second cushion block (15), and the distance between the first inclined surface (17) and the first flat surface (18) gradually decreases along the direction approaching the other second wedge block (16); One side of the second cushion block (15) close to the second wedge block (16) is provided with a second inclined surface (19) for cooperating with the corresponding first inclined surface (17).

8. The fuel cell stack packaging device according to claim 3, wherein The displacement indicator (8) includes two watchbands (20), a central gear (23), a dial (21) and a pointer (22); Each watchband (20) is provided with a rack (24) extending along the lifting direction of the main lifting mechanism (5), the central gear (23) is located between the racks (24) of the two watchbands (20), and the central gear (23) is driven to rotate by the movement of the racks (24) of the two watchbands (20) along the lifting direction; The dial (21) is provided with indicating scales, the first end of the pointer (22) is located at the center of the dial (21), the second end of the pointer (22) is arranged towards the edge of the dial (21), and the central gear (23) is connected to the first end of the pointer (22) to drive the pointer (22) to rotate.

9. The fuel cell stack packaging device according to claim 8, wherein One watchband (20) of the displacement indicator (8) is arranged on the pressure cap (7), and the other watchband (20) of the displacement indicator (8) is arranged on the first one of the end plates (2); and / or The two watchbands (20) of the displacement indicator (8) are respectively arranged at opposite ends of the elastic member (3).

10. The stack packaging device according to claim 1, characterized in that the number of the main lifting mechanisms (5) is one, or the number of the main lifting mechanisms (5) is multiple, and the multiple main lifting mechanisms (5) are arranged at intervals along the extension direction of the end plate (2); the elastic member (3) includes at least one disc spring.

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