Bipolar plate air tightness detection equipment

Abstract

The utility model discloses bipolar plate air tightness detection equipment, which comprises a rack, a pressing mechanism and a detection device, a plurality of groups of stacked jigs are arranged on the rack, each jig comprises an upper template and a lower template, two upper positioning pieces are arranged on one side, close to the detection device, of the side wall of each upper template, and two lower positioning pieces are arranged on the other side of each upper template. An upper positioning piece is arranged on the side, away from the detection device, of the side wall of the upper die plate, two lower positioning pieces are arranged on the side, close to the detection device, of the side wall of the lower die plate, a lower positioning piece is arranged on the side, away from the detection device, of the side wall of the lower die plate, and a plurality of upper positioning holes 402 are formed in the bottom of the upper positioning piece. A plurality of lower positioning holes are formed in the top ends of the lower positioning pieces, a plurality of upper connecting holes are formed in the upper die plate, a plurality of lower connecting holes are formed in the lower die plate, and the positioning pieces with different numbers are arranged at the two side ends of the upper die plate and the lower die plate, so that the upper die plate and the lower die plate are convenient to align, and the mounting speed is increased; the detection device can detect a plurality of bipolar plates at the same time, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen and oxygen fuel cells, in particular to a bipolar plate air tightness detection device. Background Art

[0002] The airtightness of the bipolar plate is one of the important factors in evaluating battery safety. Therefore, it is necessary to conduct airtightness tests on the hydrogen flow channel, oxygen flow channel and cooling water flow channel.

[0003] When installing the bipolar plate into the fixture, the existing testing equipment is prone to installing the upper template and the lower template in reverse, which affects the installation speed, and can only test one set of fixtures, resulting in low testing efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a bipolar plate air tightness detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bipolar plate air tightness detection device, comprising: a frame, a pressing mechanism and a detection device, the pressing mechanism is arranged in the frame, and a plurality of stacked jigs are arranged on the frame, the jigs include an upper template and a lower template, two upper positioning members are arranged on the side of the upper template side wall close to the detection device, an upper positioning member is arranged on the side of the upper template side wall away from the detection device, two lower positioning members are arranged on the side of the lower template side wall close to the detection device, and a lower positioning member is arranged on the side of the upper template side wall away from the detection device, a plurality of upper positioning holes 402 are arranged at the bottom of the upper positioning member, a plurality of lower positioning holes cooperating with the upper positioning holes 402 are arranged at the top of the lower positioning member, a plurality of upper connecting holes for connecting with the lower template of another group of jigs are arranged on the upper template, and a plurality of lower connecting holes cooperating with the upper connecting holes are arranged on the lower template.

[0006] Preferably, the detection device includes an oxygen flow meter, a water flow meter and a hydrogen flow meter.

[0007] Preferably, an oxygen inlet, a water inlet and a hydrogen inlet are provided on the upper template, and an oxygen flow channel, a water flow channel and a hydrogen flow channel are formed between the upper template and the lower template. The oxygen inlet is connected to the oxygen flow channel, the water inlet is connected to the water flow channel, the hydrogen inlet is connected to the hydrogen flow channel, the inlet end of the oxygen flowmeter is connected to an external oxygen supply device, the outlet end of the oxygen flowmeter is connected to the oxygen inlet, the inlet end of the water flowmeter is connected to an external water supply device, the outlet end of the water flowmeter is connected to the water inlet, the inlet end of the hydrogen flowmeter is connected to an external hydrogen supply device, and the outlet end of the hydrogen flowmeter is connected to the hydrogen inlet.

[0008] Preferably, the outlet end of the oxygen flowmeter is connected to an oxygen main channel, a plurality of oxygen branch channels are arranged on the oxygen main channel, and the oxygen branch channel is connected to the oxygen inlet; the outlet end of the water flowmeter is connected to a water main channel, a plurality of water branch channels are arranged on the water main channel, and the water branch channel is connected to the water inlet; the outlet end of the hydrogen flowmeter is connected to a hydrogen main channel, a plurality of hydrogen branch channels are arranged on the hydrogen main channel, and the hydrogen branch channel is connected to the hydrogen inlet.

[0009] Preferably, the external oxygen supply device is connected to an oxygen main channel, a plurality of oxygen branch channels are arranged on the oxygen main channel, the oxygen branch channels are connected to the oxygen inlet, and an oxygen flow meter is arranged on the oxygen branch channel; the external water supply device is connected to a water main channel, a plurality of water branch channels are arranged on the water main channel, the water branch channels are connected to the water inlet, and a water flow meter is arranged on the water branch channel; the external hydrogen supply device is connected to a hydrogen main channel, a plurality of hydrogen branch channels are arranged on the hydrogen main channel, the hydrogen branch channels are connected to the hydrogen inlet, and a hydrogen flow meter is arranged on the hydrogen branch channel.

[0010] Preferably, a sealing layer is provided on both the upper template and the lower template.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] Different numbers of positioning pieces are set on the two side ends of the upper template and the lower template to facilitate alignment of the upper template and the lower template, improve installation speed, and allow the detection device to detect multiple bipolar plates at the same time, thereby improving detection efficiency. When stacking the jigs, positioning columns can be inserted into the upper connecting holes and the lower connecting holes to improve the accuracy of jig stacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the detection device in the first embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the fixture in the first embodiment of the utility model;

[0016] Figure 4 It is a partial cross-sectional view of the fixture in the first embodiment of the utility model;

[0017] Figure 5 This is an exploded view of the fixture in the first embodiment of the utility model from a top view angle;

[0018] Figure 6 This is an exploded view of the fixture in the first embodiment of the utility model from a bottom-up perspective;

[0019] Figure 7 This is a schematic diagram of the structure of the detection device in the second embodiment of the present utility model;

[0020] In the figure: frame--1, pressing mechanism--2, fixture--3, oxygen flow channel--301, water flow channel--302, hydrogen flow channel--303, sealant layer--304, upper template--4, upper positioning piece--401, upper positioning hole 402--402, upper connecting hole--403, oxygen inlet--404, water inlet--405, hydrogen inlet--406, lower template--5, lower positioning piece--501, lower positioning hole--502, lower connecting hole--503, oxygen flowmeter--6, oxygen main channel--601, oxygen branch channel--602, water flowmeter--7, water main channel--701, water branch channel--702, hydrogen flowmeter--8, hydrogen main channel--801, hydrogen branch channel--802. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1-6 The utility model provides a technical solution for a bipolar plate air tightness detection device: a bipolar plate air tightness detection device, comprising: a frame 1, a pressing mechanism 2 and a detection device, the pressing mechanism 2 is arranged in the frame 1, and a plurality of stacked jigs 3 are arranged on the frame 1, the jig 3 comprises an upper template 4 and a lower template 5, two upper positioning members 401 are arranged on the side wall of the upper template 4 close to the detection device, an upper positioning member 401 is arranged on the side wall of the upper template 4 away from the detection device, and a side wall of the lower template 5 close to the detection device is provided. Two lower positioning members 501 are provided on one side of the upper template 4, a lower positioning member 501 is provided on the side of the side wall of the upper template 4 away from the detection device, a plurality of upper positioning holes 402 are provided at the bottom of the upper positioning member 401, a plurality of lower positioning holes 502 matching with the upper positioning holes 402 are provided at the top of the lower positioning member 501, a plurality of upper connecting holes 403 for connecting with the lower template 5 of another group of fixtures 3 are provided on the upper template 4, and a plurality of lower connecting holes 503 matching with the upper connecting holes 403 are provided on the lower template 5.

[0024] The upper positioning hole 402 is used to install the solid cylindrical pin, and the lower positioning hole 502 is used to install the shaft sleeve. The shaft sleeve cooperates with the solid cylindrical pin. When installing the bipolar plate, first place the bipolar plate to be tested on the lower template 5, and then cover the upper template 4 on the bipolar plate, so that the three upper positioning pieces 401 of the upper template 4 are aligned with the three lower positioning pieces 501 of the lower template 5, and then press the upper template 4 to insert the solid cylindrical pin into the shaft sleeve, and load the bipolar plate into the fixture 3 to complete the installation of the bipolar plate. Finally, stack multiple fixtures 3 with bipolar plates on the rack 1 and start testing the bipolar plates. Different numbers of positioning pieces are set at the two side ends of the upper template 4 and the lower template 5 to facilitate alignment of the upper template 4 and the lower template 5, improve the installation speed, and allow the detection device to detect multiple bipolar plates at the same time, thereby improving the detection efficiency. When stacking the fixture 3, positioning columns can be inserted into the upper connecting hole 403 and the lower connecting hole 503 to improve the stacking accuracy of the fixture 3.

[0025] In this embodiment, the detection device includes an oxygen flowmeter 6, a water flowmeter 7 and a hydrogen flowmeter 8. An oxygen inlet 404, a water inlet 405 and a hydrogen inlet 406 are provided on the upper template 4. An oxygen flow channel 301, a water flow channel 302 and a hydrogen flow channel 303 are formed between the upper template 4 and the lower template 5. The oxygen inlet 404 is connected to the oxygen flow channel 301, the water inlet 405 is connected to the water flow channel 302, and the hydrogen inlet 406 is connected to the hydrogen flow channel 303. The inlet end of the oxygen flowmeter 6 is connected to the external oxygen supply equipment, the outlet end of the oxygen flowmeter 6 is connected to the oxygen inlet 404, the inlet end of the water flowmeter 7 is connected to the external water supply equipment, the outlet end of the water flowmeter 7 is connected to the water inlet 405, and the hydrogen flowmeter The inlet end of 8 is connected to the external hydrogen supply equipment, and the outlet end of the hydrogen flowmeter 8 is connected to the hydrogen inlet 406. When the bipolar plate is tested, the oxygen supply device inputs oxygen from the oxygen inlet 404 into the oxygen flow channel 301, the water supply device inputs water from the water channel inlet 405 into the water channel 302, and the hydrogen supply device inputs hydrogen from the hydrogen inlet 406 into the hydrogen flow channel 303. When the input of oxygen, water and hydrogen reaches the set time, the fixture 3 should be full of oxygen, water and hydrogen. If the oxygen flowmeter 6, the water flowmeter 7 and the hydrogen flowmeter 8 show a flow rate close to 0, it means that the bipolar plate has good air tightness. If the oxygen flowmeter 6, the water flowmeter 7 and the hydrogen flowmeter 8 show a higher flow rate, it means that the bipolar plate is broken and leaking and needs to be repaired.

[0026] In this embodiment, the outlet end of the oxygen flowmeter 6 is connected to the oxygen main channel 601, and a plurality of oxygen branch channels 602 are arranged on the oxygen main channel 601, and the oxygen branch channel 602 is connected to the oxygen inlet 404. One oxygen flowmeter 6 is used to simultaneously detect the oxygen flow channels 301 of multiple fixtures 3, the outlet end of the water channel flowmeter 7 is connected to the water channel main channel 701, and a plurality of water channel branch channels 702 are arranged on the water channel main channel 701, and the water channel branch channel 702 is connected to the water channel inlet 405. One water channel flowmeter 7 is used to simultaneously detect the water channel 302 of multiple fixtures 3, and the outlet end of the hydrogen flowmeter 8 is connected to the hydrogen main channel 801, and a plurality of hydrogen branch channels 802 are arranged on the hydrogen main channel 801, and the hydrogen branch channel 802 is connected to the hydrogen inlet 406. One hydrogen flowmeter 8 is used to simultaneously detect the hydrogen flow channels 303 of multiple fixtures 3, thereby improving the detection efficiency.

[0027] In this embodiment, a sealing rubber layer 304 is provided on both the upper template 4 and the lower template 5 to increase the air tightness of the fixture 3 .

[0028] Embodiment 2

[0029] See also Figure 7 The structure of this embodiment is similar to that of the first embodiment, except that the detection device is connected to an external oxygen supply device with an oxygen main flow channel 601, on which a plurality of oxygen branch flow channels 602 are arranged, and the oxygen branch flow channel 602 is connected to the oxygen inlet 404, and an oxygen flow meter 6 is arranged on the oxygen branch flow channel 602, and an oxygen flow meter 6 is used to detect an oxygen flow channel 301 of a fixture 3, and an external water supply device is connected to a water main flow channel 701, on which a plurality of water branch flow channels 702 are arranged, and the water branch flow channel 702 is connected to the oxygen inlet 404. 02 is connected to the water channel inlet 405, the water channel flowmeter 7 is arranged on the water channel branch channel 702, and a water channel flowmeter 7 is used to detect the water channel 302 of a fixture 3, the external hydrogen supply equipment is connected to the hydrogen main channel 801, and a plurality of hydrogen branch channels 802 are arranged on the hydrogen main channel 801, and the hydrogen branch channel 802 is connected to the hydrogen inlet 406, and the hydrogen flowmeter 8 is arranged on the hydrogen branch channel 802. A hydrogen flowmeter 8 is used to detect the hydrogen flow channel 303 of a fixture 3, so as to quickly and conveniently find out the bipolar plate with a leak.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bipolar plate air tightness detection device, comprising: A frame (1), a pressing mechanism (2) and a detection device, wherein the pressing mechanism (2) is arranged in the frame (1), and is characterized in that a plurality of stacked jigs (3) are arranged on the frame (1), the jigs (3) comprising an upper template (4) and a lower template (5), two upper positioning members (401) are arranged on a side of the upper template (4) close to the detection device, an upper positioning member (401) is arranged on a side of the upper template (4) away from the detection device, and two lower positioning members (501) are arranged on a side of the lower template (5) close to the detection device. ), a lower positioning piece (501) is arranged on a side of the side wall of the lower template (5) away from the detection device, a plurality of upper positioning holes (402) are arranged at the bottom of the upper positioning piece (401), a plurality of lower positioning holes (502) cooperating with the upper positioning holes (402) are arranged at the top of the lower positioning piece (501), a plurality of upper connecting holes (403) for connecting with the lower template (5) of another set of fixtures (3) are arranged on the upper template (4), and a plurality of lower connecting holes (503) cooperating with the upper connecting holes (403) are arranged on the lower template (5).

2. A bipolar plate air tightness detection device according to claim 1, characterized in that: The detection device comprises an oxygen flow meter (6), a waterway flow meter (7) and a hydrogen flow meter (8).

3. A bipolar plate air tightness detection device according to claim 2, characterized in that: The upper template (4) is provided with an oxygen inlet (404), a water channel inlet (405) and a hydrogen inlet (406); an oxygen flow channel (301), a water channel (302) and a hydrogen flow channel (303) are formed between the upper template (4) and the lower template (5); the oxygen inlet (404) is connected to the oxygen flow channel (301); the water channel inlet (405) is connected to the water channel (302); the hydrogen inlet (406) is connected to the hydrogen flow channel (303); the inlet end of the oxygen flow meter (6) is connected to an external oxygen supply device; the outlet end of the oxygen flow meter (6) is connected to the oxygen inlet (404); the inlet end of the water channel flow meter (7) is connected to an external water supply device; the outlet end of the water channel flow meter (7) is connected to the water channel inlet (405); the inlet end of the hydrogen flow meter (8) is connected to an external hydrogen supply device; and the outlet end of the hydrogen flow meter (8) is connected to the hydrogen inlet (406).

4. A bipolar plate air tightness detection device according to claim 3, characterized in that: The outlet end of the oxygen flow meter (6) is connected to an oxygen main channel (601), a plurality of oxygen branch channels (602) are arranged on the oxygen main channel (601), and the oxygen branch channels (602) are connected to the oxygen inlet (404). The outlet end of the water flow meter (7) is connected to a water main channel (701), a plurality of water branch channels (702) are arranged on the water main channel (701), and the water branch channels (702) are connected to the water inlet (405). The outlet end of the hydrogen flow meter (8) is connected to a hydrogen main channel, a plurality of hydrogen branch channels (802) are arranged on the hydrogen main channel, and the hydrogen branch channels (802) are connected to the hydrogen inlet (406).

5. The bipolar plate air tightness detection device according to claim 3, characterized in that: The external oxygen supply device is connected to an oxygen main channel (601), a plurality of oxygen branch channels (602) are arranged on the oxygen main channel (601), the oxygen branch channels (602) are connected to the oxygen inlet (404), and an oxygen flow meter (6) is arranged on the oxygen branch channel (602). The external water supply device is connected to a water main channel (701), a plurality of water branch channels (702) are arranged on the water main channel (701), the water branch channels (702) are connected to the water inlet (405), and a water flow meter (7) is arranged on the water branch channel (702). The external hydrogen supply device is connected to a hydrogen main channel (801), a plurality of hydrogen branch channels (802) are arranged on the hydrogen main channel (801), the hydrogen branch channels (802) are connected to the hydrogen inlet (406), and a hydrogen flow meter (8) is arranged on the hydrogen branch channel (802).

6. The bipolar plate air tightness detection device according to claim 1, characterized in that: A sealing glue layer (304) is provided on both the upper template (4) and the lower template (5).

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