Temperature-pressure alternating jig for bipolar plate of fuel cell

Abstract

The utility model discloses a temperature-pressure alternating jig for a bipolar plate of a fuel cell, which comprises a clamping assembly, comprising a base, a mounting hole formed in the base, guide grooves symmetrically formed in the base and communicated with the mounting hole, a double-end air cylinder fixed to the middle of the mounting hole, a push plate inserted into the guide grooves and fixed to a push rod of the double-end air cylinder, and a clamping plate fixed to the push plate. A top cover assembly; a pressing assembly, comprising a portal frame fixed to the top end of the vertical plate, a threaded rod rotationally installed in the middle of the portal frame, an adjusting rotary disc fixed to the top end of the threaded rod, and guide rods symmetrically fixed to the portal frame. The guide rod is sleeved with the connecting block, and the connecting block is meshed with the threaded rod at the same time; the pressing plate is fixed to the bottom end of the connecting block; a locking assembly; and the lock head goes deep into the lock groove to lock the adjusting turntable, so that the adjusting turntable is prevented from rotating, and the bipolar plate is prevented from protruding upwards and deforming during detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell bipolar plate temperature pressure alternation fixture technical field, concretely is a kind of fuel cell bipolar plate temperature pressure alternation fixture. BACKGROUND

[0002] Current fuel cell is by several groups of bipolar plate and membrane electrode interval stacking.And bipolar plate is one of main components of fuel cell, is the key structural member of fuel cell, its quality is about 70%~80% of entire fuel cell stack, plays the role of the mechanical strength of supporting fuel cell, and has current conduction, fuel gas distribution, reaction heat dissipation and other functions.Therefore, whether the performance of bipolar plate is influenced under the change of different water pressure, air pressure and temperature needs to be tested and verified.

[0003] The existing fuel cell bipolar plate detection fixture is when detecting bipolar plate, several groups of bipolar plate are placed in two clamps, and the edge of clamp is fixed by locking assembly, so as to clamp bipolar plate between two clamps, to prevent gas and coolant in bipolar plate from leaking outward, but the middle position of clamp is deformed upward due to lack of compression, which will cause gap between bipolar plate, when the detection pressure is larger, gas and coolant between bipolar plate will leak outward, affect detection result. SUMMARY

[0004] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments.In this section, as well as the abstract of the specification and the utility model name, some simplification or omission may be made to avoid obscuring the purpose of this section, abstract of specification and utility model name, and such simplification or omission cannot be used to limit the scope of the utility model.

[0005] In view of the above and / or existing problems in a kind of fuel cell bipolar plate temperature pressure alternation fixture, the utility model is presented.

[0006] The utility model discloses a fuel cell bipolar plate temperature pressure alternation jig, when using the device, first, the bipolar plate to be detected is stacked and placed on the base, then the double -end air cylinder is started, and two clamping plates are moved until the clamping plate is clamped on the side wall of the bipolar plate, then the top cap is loosened, and the top cap is lowered along the screw and is pasted on the top surface of the bipolar plate, then the screw cap is screwed and the top cap is fixed, then the adjusting turntable is rotated and drives the threaded rod to rotate, drives the connecting block and the pressing plate to descend, so that the pressing plate is pressed on the top cap, then the round rod is rotated, and the lock head is rotated to the top of the lock groove, then the round rod is loosened, and under the driving of the tension spring, the round rod is deeply inserted into the round groove, the lock head is deeply inserted into the lock groove, and the adjusting turntable is locked, so that the adjusting turntable is prevented from rotating, and the bipolar plate is prevented from being deformed upward during detection.

[0007] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0008] A fuel cell bipolar plate temperature pressure alternation jig, comprising:

[0009] A clamping assembly comprising a base, a mounting hole formed in the base, guide grooves formed symmetrically in the base and communicating with the mounting hole, a double-end air cylinder fixed in the middle of the mounting hole, a push plate inserted in the guide grooves and fixed on the push rod of the double-end air cylinder, and a clamping plate fixed on the push plate;

[0010] A top cap assembly comprising vertical plates fixed symmetrically on the base, lifting grooves formed in the inner walls of the vertical plates, screws fixedly installed in the lifting grooves, screw caps engaged with the screws, lifting plates inserted in the lifting grooves and sleeved on the screws, top caps fixed on the lifting plates, gas inlet connectors connected symmetrically on the top caps, gas outlet connectors connected symmetrically on the top caps, cooling liquid inlet connectors connected on the top caps, and cooling liquid outlet connectors connected on the top caps;

[0011] A pressing assembly comprising a gantry fixed on the top end of the vertical plate, a threaded rod rotatably installed in the middle of the gantry, an adjusting turntable fixed on the top end of the threaded rod, guide rods fixed symmetrically on the gantry, connecting blocks sleeved on the guide rods and engaged on the threaded rod at the same time, and a pressing plate fixed on the bottom end of the connecting block;

[0012] The locking assembly comprises a fixing block fixed on the portal frame, a circular groove opened on the fixing block, a tension spring fixed in the circular groove, a circular rod inserted in the circular groove and fixed on the tension spring, a connecting rod fixed on the circular rod, a hexagonal lock head fixed on the connecting rod, and a lock groove opened on the adjusting turntable and matched with the lock head.

[0013] As a preferred scheme of the fuel cell bipolar plate temperature and pressure alternating jig, the outer wall of the adjusting turntable is uniformly provided with anti-skid grooves.

[0014] As a preferred scheme of the fuel cell bipolar plate temperature and pressure alternating jig, the inner wall of the clamping plate is fixed with a soft pad.

[0015] As a preferred scheme of the fuel cell bipolar plate temperature and pressure alternating jig, the bottom of the pressing plate is fixed with a rubber pad.

[0016] As a preferred scheme of the fuel cell bipolar plate temperature and pressure alternating jig, the lock head is a hexagonal lock head, and the lock groove is a hexagonal lock groove.

[0017] Compared with the prior art, the fuel cell bipolar plate temperature and pressure alternating jig has the beneficial effects that:

[0018] (1) When the device is used, first, the bipolar plate stack to be detected is placed on the base, then the double-end air cylinder is started to drive the two clamping plates to move until the clamping plates are clamped on the side walls of the bipolar plate, then the top cover is loosened, the top cover is lowered along the screw and is attached to the top surface of the bipolar plate, then the screw cap is screwed to fix the top cover, then the adjusting turntable is rotated to drive the threaded rod to rotate, drive the connecting block and the pressing plate to descend, so that the pressing plate is pressed on the top cover, then the circular rod is rotated to drive the lock head to rotate above the lock groove, then the circular rod is loosened, and under the driving of the tension spring, the circular rod is deeply inserted into the circular groove, drives the lock head to be deeply inserted into the lock groove to lock the adjusting turntable, so that the adjusting turntable is prevented from rotating, thereby preventing the bipolar plate from being deformed upward during detection.

[0019] (2) During detection, the gas inlet and outlet joint is connected with the gas through the air pressure valve, the cooling liquid inlet and outlet joint is connected with the constant-temperature water tank through the water pump, the air pressure of the gas entering the bipolar plate is adjusted by using the air pressure valve, the cooling liquid pressure entering the bipolar plate is adjusted by using the water pump, and the cooling liquid temperature entering the bipolar plate through the water pump is controlled by using the constant-temperature water tank, so that the working state of the bipolar plate is simulated, and the performance of the graphite bipolar plate is tested by adjusting the size of the air pressure, the cooling liquid pressure and the cooling liquid temperature entering the bipolar plate stack. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical scheme of the embodiments of the present application clearer, the present application will be described in detail below with reference to the drawings and specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings. Among them:

[0021] Figure 1 It is a whole structure schematic diagram of the present application of a fuel cell bipolar plate temperature and pressure alternating jig.

[0022] Figure 2 It is a structure sectional view of the present application of a fuel cell bipolar plate temperature and pressure alternating jig.

[0023] Figure 3 It is a structure schematic diagram of the clamping assembly of the present application of a fuel cell bipolar plate temperature and pressure alternating jig.

[0024] Figure 4 It is a structure schematic diagram of the present application of a fuel cell bipolar plate temperature and pressure alternating jig. Figure 2 It is a local enlarged view of A in the middle. Specific embodiments

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0026] Secondly, the present application is described in detail in combination with the schematic diagram. In order to facilitate the description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0027] In order to make the purposes, technical schemes and advantages of the present application more clear, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0028] The utility model provides a kind of fuel cell bipolar plate temperature-pressure alternating jig, when using the device, first, the bipolar plate to be detected is stacked and placed on base, then start double-end cylinder, drive two clamps to move, until clamp is clamped in the lateral wall of bipolar plate, then loosen top cover, top cover is lowered along screw and is pasted on the top surface of bipolar plate, then screw on the nut and fix top cover, then rotate adjusting turntable and drive screw rod to rotate, drive connecting block and pressing plate to descend, so that pressing plate is pressed on top cover, then rotate round rod, drive lock head to rotate above lock groove, then loosen round rod, under the driving of tension spring, round rod is deeply inserted into circular groove, drive lock head to be deeply inserted into lock groove and lock adjusting turntable, avoid adjusting turntable to rotate, to avoid bipolar plate to be deformed and protrude upward when detecting.

[0029] Figures 1-4 It is the whole structure schematic diagram of one embodiment of the utility model fuel cell bipolar plate temperature-pressure alternating jig, please refer to Figures 1-4 The utility model provides a kind of fuel cell bipolar plate temperature-pressure alternating jig, and the main part includes clamping assembly 100, top cover assembly 200, pressing assembly 300 and locking assembly 400.

[0030] Clamping assembly 100, including base 110, mounting hole 120 being opened in base 110, symmetrically being opened in base 110 and being communicated with mounting hole 120 guiding groove 130, double-end cylinder 140 being fixed in the middle of mounting hole 120, push plate 150 being inserted in guiding groove 130 and being fixed in the push rod of double-end cylinder 140 and clamping plate 160 being fixed on push plate 150, and the inner wall of clamping plate 160 is fixed with soft pad;

[0031] Top cover assembly 200, including vertical plate 210 being symmetrically fixed on base 110, lifting groove 220 being opened in the inner wall of vertical plate 210, screw 230 being fixedly installed in lifting groove 220, nut 240 being engaged with screw 230, lifting plate 250 being inserted in lifting groove 220 and being sleeved on screw 230, top cover 260 being fixed on lifting plate 250, gas inlet connector 270 being symmetrically connected on top cover 260, gas outlet connector 270a being symmetrically connected on top cover 260, cooling liquid inlet connector 280 being connected on top cover 260 and cooling liquid outlet connector 280a being connected on top cover 260;

[0032] The pressing assembly 300 comprises a portal frame 310 fixed at the top end of the vertical plate 210, a threaded rod 320 rotatably installed in the middle of the portal frame 310, an adjusting turntable 320a fixed at the top end of the threaded rod 320, guide rods 330 symmetrically fixed on the portal frame 310, a connecting block 340 sleeved on the guide rods 330 and engaged on the threaded rod 320 at the same time, and a pressing plate 350 fixed at the bottom end of the connecting block 340, and anti-skid grooves are uniformly arranged on the outer wall of the adjusting turntable 320a; and a rubber pad is fixed at the bottom of the pressing plate 350;

[0033] The locking assembly 400 comprises a fixed block 410 fixed on the portal frame 310, a circular groove 420 arranged on the fixed block 410, a tension spring 430 fixed in the circular groove 420, a circular rod 440 inserted in the circular groove 420 and fixed on the tension spring 430, a connecting rod 450 fixed on the circular rod 440, a hexagonal lock head 460 fixed on the connecting rod 450, and a lock groove 470 arranged on the adjusting turntable 320a and matched with the lock head 460, wherein the lock head 460 is a hexagonal lock head, and the lock groove 470 is a hexagonal lock groove.

[0034] In combination Figures 1-4 , the specific use process of the fuel cell bipolar plate temperature and pressure alternating jig is as follows: when the device is used, first, stack the bipolar plates to be detected on the base 110, then start the double-end air cylinder 140 to drive the two clamping plates 160 to move until the clamping plates 160 are clamped on the side walls of the bipolar plates, then loosen the top cover 260, the top cover 260 is lowered along the screw 230 and is attached to the top surface of the bipolar plates, then the screw nut 240 is screwed to fix the top cover 260, then the adjusting turntable 320a is rotated to drive the threaded rod 320 to rotate, the connecting block 340 and the pressing plate 350 are driven to descend, so that the pressing plate 350 is pressed on the top cover 260, then the circular rod 440 is rotated to drive the lock head 460 to rotate above the lock groove 470, then the circular rod 440 is loosened, under the driving of the tension spring 430, the circular rod 440 is deeply inserted into the circular groove 420, the lock head 460 is deeply inserted into the lock groove 470 to lock the adjusting turntable 320a, so as to avoid the rotation of the adjusting turntable 320a, thereby avoiding the upward bulging deformation of the bipolar plates during detection.

[0035] Although the utility model has been described above with reference to the embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the utility model can be combined in any way, and the combinations are not described in this specification due to the consideration of omitting the length and saving resources. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fuel cell bipolar plate warm-pressing alternate fixture, characterized by, The utility model relates to a kind of pressurized gas cylinder locking device, including: Clamping assembly (100), including base (110), mounting hole (120) being opened in the base (110), guide slot (130) being opened symmetrically in the base (110) and being communicated mounting hole (120), double-end cylinder (140) being fixed in the middle of mounting hole (120), push plate (150) being inserted in the guide slot (130) and being fixed in the double-end cylinder (140) push rod and clamping plate (160) being fixed on the push plate (150); Top cover assembly (200), including vertical plate (210) being fixed symmetrically on the base (110), lifting groove (220) being opened on the inner wall of vertical plate (210), screw (230) being fixedly installed in the lifting groove (220), nut (240) being engaged with screw (230), lifting plate (250) being inserted in the lifting groove (220) and being sleeved on screw (230), top cover (260) being fixed on the lifting plate (250), gas inlet connector (270) being connected symmetrically on the top cover (260), gas outlet connector (270a) being connected symmetrically on the top cover (260), cooling liquid inlet connector (280) being connected on the top cover (260) and cooling liquid outlet connector (280a) being connected on the top cover (260); Pressing assembly (300), including gantry (310) being fixed on the top end of vertical plate (210), screw rod (320) being rotatably installed in the middle of gantry (310), adjusting turntable (320a) being fixed on the top end of screw rod (320), guide rod (330) being fixed symmetrically on the gantry (310), connecting block (340) being sleeved on the guide rod (330) and being engaged on screw rod (320) simultaneously and pressing plate (350) being fixed on the bottom end of connecting block (340); Locking assembly (400), including fixed block (410) being fixed on the gantry (310), circular groove (420) being opened on the fixed block (410), tension spring (430) being fixed in the circular groove (420), circular rod (440) being inserted in the circular groove (420) and being fixed on the tension spring (430), connecting rod (450) being fixed on the circular rod (440), hexagonal lock head (460) being fixed on the connecting rod (450) and lock groove (470) being opened on the adjusting turntable (320a) and being matched with the lock head (460).

2. The fuel cell bipolar plate warm press alternate fixture of claim 1, wherein, Anti-skid groove is evenly opened on the outer wall of the adjusting turntable (320a).

3. The fuel cell bipolar plate warm press alternate fixture of claim 1, wherein, The inner wall of the clamping plate (160) is fixed with a soft pad.

4. The fuel cell bipolar plate warm press alternate fixture of claim 1, wherein, The bottom of the pressing plate (350) is fixed with a rubber pad.

5. The fuel cell bipolar plate warm press alternate fixture of claim 1, wherein, The lock head (460) is a hexagonal lock head, and the lock groove (470) is a hexagonal lock groove.

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