Separating type electric pile pressure head

Abstract

The utility model provides a separated electric pile pressure head. The separated electric pile pressure head comprises a connecting plate, a movable limiting plate and a lower pressure plate which are sequentially arranged from top to bottom, the connecting plate is installed at the downward pressing end of the press machine, the downward pressing plate is connected with the connecting plate through the vertical guide rod, and the vertical guide rod is sleeved with the movable limiting plate. A plurality of limiting sleeves are arranged on the peripheral side of the movable limiting plate, and rolling wheels are installed on the end sides, back to the interval, of the limiting sleeves and tangent to the limiting vertical rods; the limiting sleeves and the limiting vertical rods of the jig are arranged in a one-to-one correspondence mode, and the limiting sleeves can be arranged on the limiting vertical rods in a sleeving mode so as to tightly hold the limiting vertical rods; according to the design, the limiting sleeve tightly holds the upper end part of the limiting vertical rod of the jig, more stable lateral limitation can be provided for the peripheral side surface of a galvanic pile during pile pressing, so that the offset of the galvanic pile during pile pressing is reduced, the product quality is improved, and meanwhile, due to the movable design of the movable limiting plate, the mounting of the side plate can be avoided while the lower pressing plate ensures the pressure on the galvanic pile.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cell preparation, in particular to a separate type fuel cell stack pressure head. Background Art

[0002] The structure of the battery stack is an upper end plate, several bipolar plates and membrane electrodes that are alternately stacked, and a lower end plate. After the battery stack is stacked, it needs to be pressed, and then the upper and lower end plates are connected as a whole through the side plates so that the internal pressure of the battery stack is borne by the side plates. When pressing the stack, the pressure head of the press applies a preset pressure to the upper end plate to compress the battery stack. During the pressing process, the battery stack composed of hundreds of bipolar plates and membrane electrodes will deform under the huge pressure. During the deformation of the battery stack, the downward pressure will generate a certain lateral force, which will cause the membrane electrode or bipolar plate to shift laterally, resulting in reduced product quality. If the deviation is too large, it will cause waste.

[0003] The existing pressure head structure has a single function and is unable to simultaneously impose lateral restrictions on the fuel cell stack during compression, and needs further development. Utility Model Content

[0004] In order to overcome the problems existing in the related technology, the utility model provides a separate fuel cell stack pressing head, which can provide more stable lateral restriction on the side surfaces of the fuel cell stack during stacking by holding the upper end of the limiting vertical rod of the fixture, so as to reduce the displacement of the fuel cell stack during stacking and improve product quality.

[0005] The purpose of the utility model is to provide a separate type battery stack pressing head, which is used to press the battery stack with completed lamination in the jig, and the jig is against each side of the battery stack through a plurality of limit vertical rods;

[0006] Specifically, the separate stack pressure head includes a connecting plate, a movable limit plate and a lower pressure plate arranged in sequence from top to bottom;

[0007] The connecting plate is installed at the lower pressing end of the press, the lower pressing plate is connected to the connecting plate via a vertical guide rod, and the movable limit plate is sleeved on the vertical guide rod;

[0008] A plurality of limit sleeves are arranged around the movable limit plate, and rollers are installed on the end of the limit sleeve facing away from the interval, and the rollers are tangent to the limit vertical rod;

[0009] The limiting sleeve is arranged in one-to-one correspondence with the limiting vertical rod of the fixture, and the limiting sleeve can be sleeved on the limiting vertical rod to hold the limiting vertical rod tightly.

[0010] In a preferred technical solution of the utility model, a locking piece for locking the movable limiting plate and the vertical guide rod is provided on the movable limiting plate.

[0011] In a preferred technical solution of the utility model, a driving member is also included to drive the movable limit plate to slide axially along the vertical guide rod.

[0012] In a preferred technical solution of the utility model, the driving member is a handle installed on the movable limiting plate.

[0013] In a preferred technical solution of the utility model, the driving member is a cylinder or a linear module installed on the connecting plate, and the moving end of the driving member is connected to the movable limiting plate.

[0014] In a preferred technical solution of the utility model, the locking member is a clamping ring.

[0015] In a preferred technical solution of the utility model, the roller is installed inside the limiting sleeve.

[0016] In a preferred technical solution of the utility model, four vertical guide rods are provided, and the four vertical guide rods are respectively arranged at four corners of the connecting plate.

[0017] In a preferred technical solution of the utility model, at least one set of two diagonally arranged vertical guide rods is equipped with a locking member.

[0018] In a preferred technical solution of the utility model, the limiting sleeve and the movable limiting plate are detachably connected via screws.

[0019] The beneficial effects of the utility model are:

[0020] The movable limit plate is provided with a limit sleeve corresponding to the limit vertical rod of the fixture, and a roller is installed on the end side of the limit sleeve facing away from the interval, and the roller is tangent to the limit vertical rod. When stacking, the movable limit plate is fixed to the top surface of the lower pressing plate by a locking member, and the limit sleeve can be sleeved on the limit vertical rod to hold the limit vertical rod tightly and impose restrictions on the upper end of the suspended limit vertical rod, thereby offsetting the lateral force on the limit vertical rod and the battery stack during the stacking process, and reducing the displacement of the battery stack during stacking;

[0021] When pressing the stack, after the downward pressure applied to the stack reaches the preset pressure, the movable limit plate is moved upward to separate the limit sleeve from the limit vertical rod. At this time, the lower pressure plate can still ensure the pressure on the stack, but does not hinder the installation of the side plate.

[0022] This design can provide more stable lateral restrictions on the sides of the battery stack during stacking by holding the upper end of the limiting vertical rod of the fixture, so as to reduce the displacement of the battery stack during stacking and improve product quality. At the same time, the movable design of the movable limiting plate can avoid the installation of the side plate while ensuring the pressure on the battery stack by the lower pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the pressure head.

[0024] Figure 2 It is a schematic diagram of the structure of a separate pressing head and a fixture head working together to press a stack.

[0025] Figure 3 It is a structural schematic diagram of the side panel installation in which the separated pressure head and the fixture head cooperate with each other.

[0026] Reference numerals:

[0027] 100. fixture; 110. limiting vertical rod; 200. detachable battery stack pressure head; 210. connecting plate; 220. movable limiting plate; 230. lower pressure plate; 240. limiting sleeve; 250. roller; 260. locking piece; 270. handle; 280. vertical guide rod; 300. battery stack; 310. upper end plate; 320. lower end plate; 400. side plate. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] The structure of the battery stack is an upper end plate 310, several bipolar plates and membrane electrodes that are alternately stacked, and a lower end plate 320. After the battery stack is completed, it needs to be pressed, and then the upper and lower end plates 320 are connected as a whole through the side plate 400, so that the internal pressure of the battery stack is borne by the side plate 400. When pressing the stack, the pressure head of the press applies a preset pressure to the upper end plate 310 to compress the battery stack. In the process of pressing down, the battery stack composed of hundreds of bipolar plates and membrane electrodes will deform under great pressure. In the process of deformation of the battery stack, the downward pressure will generate a certain lateral force, which will cause the membrane electrode or bipolar plate to shift laterally, resulting in reduced product quality. If the deviation is too large, it will cause waste.

[0030] The existing pressure head structure has a single function and is unable to simultaneously impose lateral restrictions on the fuel cell stack during compression, and needs further development.

[0031] Example

[0032] In the existing production, the stack 300 is stacked in the jig 100, and the jig 100 limits the sides of the stack 300 through a number of limit vertical rods 110. When pressing the stack, the jig 100 is put into the press together to limit the bipolar plate and the membrane electrode laterally through the limit vertical rods 110 to reduce the lateral displacement. However, the limit vertical rod 110 is only fixed at the bottom, and the upper part is suspended. When moving downward, the upper part of the limit vertical rod 110 will be deformed and offset due to the lateral force, resulting in a large offset error when the upper part of the stack 300 is subjected to the lateral force during the stacking.

[0033] Based on this, this embodiment provides a separate fuel cell stack pressing head 200, which can provide more stable lateral restriction on the side surfaces of the fuel cell stack during pressing by holding the upper end of the limiting vertical rod 110 of the fixture 100, so as to reduce the displacement of the fuel cell stack during pressing and improve product quality.

[0034] like Figure 1-3 As shown, a separate type stack pressing head 200 is used to press the stack 300 with the stack completed in the jig 100, and the jig 100 is pressed against each side of the stack 300 through a plurality of limiting vertical rods 110;

[0035] Specifically, the separate stack pressure head 200 includes a connecting plate 210, a movable limiting plate 220 and a lower pressure plate 230 which are arranged in sequence from top to bottom;

[0036] The connecting plate 210 is installed at the lower pressing end of the press, the lower pressing plate 230 is connected to the connecting plate 210 via the vertical guide rod 280, and the movable limit plate 220 is sleeved on the vertical guide rod 280;

[0037] A plurality of limiting sleeves 240 are arranged around the movable limiting plate 220, and a roller 250 is installed on the end of the limiting sleeve 240 facing away from the interval, and the roller 250 is tangent to the limiting vertical rod 110;

[0038] The limiting sleeve 240 is arranged in one-to-one correspondence with the limiting vertical rod 110 of the fixture 100. The limiting sleeve 240 can be sleeved on the limiting vertical rod 110 to hold the limiting vertical rod 110 tightly, thereby offsetting the lateral force generated during stacking;

[0039] During stacking, the movable limit plate 220 is fixed to the lower end of the vertical guide rod 280. As the separate pressure head moves downward, first, the limit sleeve 240 is sleeved on the outside of the limit vertical rod 110 from the upper end of the limit vertical rod 110, and then the lower pressure plate 230 contacts the top surface of the stack 300.

[0040] In this embodiment, a limiting sleeve 240 is arranged on the circumference of the movable limiting plate 220 and is arranged one-to-one with the limiting vertical rod 110 of the fixture 100. A roller 250 is installed on the end side of the limiting sleeve 240 facing away from the interval. The roller 250 is tangent to the limiting vertical rod 110. When stacking, the movable limiting plate 220 is fixed to the top surface of the lower pressing plate 230 by the locking member 260. The limiting sleeve 240 can be sleeved on the limiting vertical rod 110 to hold the limiting vertical rod 110 tightly and impose restrictions on the upper end of the suspended limiting vertical rod 110, thereby offsetting the lateral force on the limiting vertical rod 110 and the battery stack 300 during the stacking process, and reducing the displacement of the battery stack 300 during the stacking; when stacking, After the downward pressure applied to the battery stack 300 reaches the preset pressure, the movable limit plate 220 is moved upward to separate the limit sleeve 240 from the limit vertical rod 110. At this time, the lower pressure plate 230 can still ensure the pressure on the battery stack 300, but does not hinder the installation of the side plate 400. The present design can provide a more stable lateral restriction on the sides of the battery stack 300 during stacking by holding the upper end of the limit vertical rod 110 of the fixture 100, so as to reduce the displacement of the battery stack 300 during stacking and improve product quality. At the same time, the movable design of the movable limit plate 220 can avoid the installation of the side plate 400 while ensuring the pressure on the battery stack 300 by the lower pressure plate 230.

[0041] The steps of using the separate type stack pressing head 200 to press the stack are as follows:

[0042] S1: According to the size of the battery stack 300, the positions of the limiting vertical rods 110 are positioned to form an area suitable for accommodating the battery stack 300, and then the sheets are stacked in the area of ​​the fixture 100;

[0043] S2: applying lateral pressure perpendicular to the side of the battery stack 300 where the limiting vertical rod 110 is located to the upper part of the limiting vertical rod 110, and then pressing the battery stack 300 by a press machine, specifically:

[0044] The jig 100 is placed in the stacking station of the press, and the press drives the separate pressing head to move downward to apply a preset pressure to the stack 300;

[0045] During the downward movement, first, the limiting sleeve 240 is sleeved outside the limiting vertical rod 110 from the upper end of the limiting vertical rod 110 and applies lateral pressure perpendicular to the side of the battery stack 300 where the limiting vertical rod 110 is located to the upper part of the limiting vertical rod 110; then, the lower pressing plate 230 contacts the battery stack 300; finally, when the downward pressure reaches the required pressure of the battery stack 300, the press stops;

[0046] S3: driving the movable limiting plate 220 to move upward, so that the limiting sleeve 240 is separated from the limiting vertical rod 110;

[0047] S4: Remove each limit vertical rod 110, install the side plate 400 on the side surface of the stack 300, and fasten the upper and lower ends of the side plate 400 to the upper end plate 310 and the lower end plate 320 of the stack 300 by bolts, so that the internal pressure of the stack 300 is borne by the side plate 400;

[0048] S5: The press drives the separate pressing head to move upward and reset, thereby releasing the pressure on the battery stack 300, and the jig 100 together with the battery stack 300 is moved out of the press to complete the stacking.

[0049] In practical applications, the battery stack 300 is generally designed to be rectangular, and the side panels 400 are installed on both long sides of the battery stack 300;

[0050] In this embodiment, a locking member 260 is disposed on the movable limiting plate 220 for locking the movable limiting plate 220 and the vertical guide rod 280 .

[0051] In this embodiment, in order to improve the convenience of operation, the locking member 260 is a clamping ring.

[0052] In this embodiment, a driving member is further included to drive the movable limiting plate 220 to slide axially along the vertical guide rod 280 .

[0053] In this embodiment, the driving member is a handle 270 installed on the movable limiting plate 220 .

[0054] In this embodiment, the driving member is a cylinder or a linear module installed on the connecting plate 210 , and the moving end of the driving member is connected to the movable limiting plate 220 .

[0055] In this embodiment, in order to improve the structural strength and ensure that the roller 250 can stably hold the limiting vertical rod 110 , the roller 250 is installed inside the limiting sleeve 240 .

[0056] In this embodiment, four vertical guide rods 280 are provided, and the four vertical guide rods 280 are respectively provided at four corners of the connecting plate 210 .

[0057] In this embodiment, in order to improve the stability of the locking and fixing of the movable limiting plate 220, at least one set of two diagonally arranged vertical guide rods 280 is equipped with a locking member 260.

[0058] In this embodiment, in order to facilitate quick replacement of the jig 100, the limit sleeve 240 is detachably connected to the movable limit plate 220 via screws. Preferably, in order to improve adaptability, the movable limit plate 220 is rectangular, and its four peripheral sides are horizontally slidably provided with mounting blocks, which are locked with the movable limit plate 220 via locking nails, and the limit sleeve 240 is detachably connected to the mounting block.

[0059] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0060] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here 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" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0063] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A separate type stack pressure head, characterized in that: It includes a connecting plate, a movable limiting plate and a lower pressing plate which are arranged in sequence from top to bottom; The connecting plate is installed at the lower pressing end of the press, the lower pressing plate is connected to the connecting plate via a vertical guide rod, and the movable limit plate is sleeved on the vertical guide rod; A plurality of limiting sleeves are arranged around the movable limiting plate; The limiting sleeve is arranged in one-to-one correspondence with the limiting vertical rod of the fixture, and the limiting sleeve can be sleeved on the limiting vertical rod to hold the limiting vertical rod tightly.

2. The separate type stack pressure head according to claim 1, characterized in that: The movable limiting plate is provided with a locking piece for locking the movable limiting plate and the vertical guide rod.

3. The separate type stack pressure head according to claim 1, characterized in that: It also includes a driving member for driving the movable limiting plate to slide axially along the vertical guide rod.

4. The separate type stack pressure head according to claim 3, characterized in that: The driving member is a handle installed on the movable limiting plate.

5. The separate type stack pressure head according to claim 3, characterized in that: The driving member is a cylinder or a linear module installed on the connecting plate, and the moving end of the driving member is connected to the movable limiting plate.

6. The separate type stack pressure head according to claim 2, characterized in that: The locking piece is a clamping ring.

7. The separate type stack pressure head according to claim 6, characterized in that: Four vertical guide rods are provided, and the four vertical guide rods are respectively arranged at four corners of the connecting plate.

8. The separate type stack pressure head according to claim 7, characterized in that: A locking piece is installed on at least one set of two diagonally arranged vertical guide rods.

9. The separate type stack pressure head according to claim 1, characterized in that: A roller is installed on the end side of the limiting sleeve facing away from the interval, the roller is tangent to the limiting vertical rod, and the roller is installed inside the limiting sleeve.

10. The separate type stack pressure head according to claim 1, characterized in that: The limiting sleeve is detachably connected to the movable limiting plate via screws.

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