Integrated hydrogen energy fuel cell stack structure

Abstract

The invention discloses an integrated hydrogen energy fuel cell stack structure, and belongs to the technical field of hydrogen energy fuel cells. Comprising a protective shell assembly, a top cover assembly is fixedly installed at the top of the protective shell assembly, a plurality of hydrogen energy fuel cell units are fixedly installed in the protective shell assembly, each hydrogen energy fuel cell unit comprises a membrane electrode plate, bipolar plates are arranged on the two sides of each membrane electrode plate, and cooling fins are arranged on one sides of the bipolar plates. The two cooling fins are fixedly connected, the protective shell assembly comprises a box body, a limiting groove is formed in the bottom of the inner side of the box body, a guide block is slidably connected into the limiting groove, a clamping piece is fixedly mounted at the top of the guide block, and a threaded rod is rotatably connected to the middle of the side, away from the hydrogen energy fuel cell unit, of the clamping piece; a knob is fixedly mounted at one end of the threaded rod; according to the invention, the hydrogen energy fuel cell unit can be conveniently disassembled and replaced, the service life of the device is effectively prolonged, and the device has high practical value.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cells, and in particular to an integrated hydrogen fuel cell stack structure. Background Art

[0002] The integrated hydrogen fuel cell stack structure is a device that combines multiple single fuel cells in series, which is used to efficiently convert hydrogen and oxygen into electrical energy through electrochemical reactions. This structure is very common in hydrogen fuel cell vehicles and other applications. The membrane electrode assembly is the core component of the fuel cell, but the membrane electrode assembly has a service life and its performance will gradually decline over time. In order to ensure the close fit between the bipolar plate and the membrane electrode, the traditional stack structure requires the use of professional pressing equipment to stack and press multiple single fuel cells into a whole and place them inside the battery box. Individual fuel cells cannot be disassembled and replaced, which is inconvenient to use. Summary of the invention

[0003] The object of the present invention is to provide an integrated hydrogen fuel cell stack structure to solve the problems raised in the above background technology.

[0004] In view of the above problems, the technical solution proposed by the present invention is: An integrated hydrogen fuel cell stack structure comprises a protective shell assembly, a top cover assembly is fixedly mounted on the top of the protective shell assembly, a plurality of hydrogen fuel cell units are fixedly mounted inside the protective shell assembly, the hydrogen fuel cell units comprise membrane electrode sheets, bipolar plates are arranged on both sides of the membrane electrode sheets, a heat sink is arranged on one side of the bipolar plates, two heat sink covers are arranged on the outside of the membrane electrode sheets and the bipolar plates, and the two heat sinks are fixedly connected, the protective shell assembly comprises a box body, a limiting groove is arranged at the bottom inner side of the box body, a guide block is slidably connected inside the limiting groove, a clamping sheet is fixedly mounted on the top of the guide block, the hydrogen fuel cell unit is arranged on one side of the clamping sheet, a threaded rod is rotatably connected to the middle of the side of the clamping sheet away from the hydrogen fuel cell unit, a knob is fixedly mounted on one end of the threaded rod, a threaded sleeve is threadedly connected to the outside of the threaded rod, and the threaded sleeve is fixedly connected to the box body.

[0005] As a preferred technical solution of the present invention, three connecting holes are provided at both ends of the membrane electrode sheet, bipolar plate and heat sink, and six connecting interfaces are provided at one end of the box body away from the threaded sleeve, and the connecting interfaces are all connected to the connecting holes.

[0006] As a preferred technical solution of the present invention, a proton exchange membrane is fixedly installed in the middle of the membrane electrode sheet, and a flow groove is opened on the side of the bipolar plate facing the membrane electrode sheet, and the flow groove has an S-shaped structure.

[0007] As a preferred technical solution of the present invention, the bipolar plate is provided with a first sealing ring fixedly installed on one side of the flow groove, and the first sealing ring is arranged outside the connecting holes at the bottom of one end and the top of the other end of the flow groove.

[0008] As a preferred technical solution of the present invention, the heat sink is provided with a heat dissipation groove on the side facing the bipolar plate, and a second sealing ring is fixedly installed on the side of the heat sink provided with the heat dissipation groove, and the second sealing ring is arranged on the outside of the connecting hole in the middle of both ends of the heat dissipation groove.

[0009] As a preferred technical solution of the present invention, six third sealing rings are fixedly installed on the side of the heat sink away from the bipolar plate, and the third sealing rings are sleeved on the outside of the connecting hole.

[0010] As a preferred technical solution of the present invention, clamping grooves are provided at both ends and the middle of the top of the heat sink, and limit blocks are provided at both ends of the bottom of the heat sink, and the limit blocks are snap-connected with the limit grooves, an electrode connector is provided at the top of one end of the bipolar plate, and a connector through hole is provided at the top of one end of the heat sink, and the electrode connector passes through the connector through hole.

[0011] As a preferred technical solution of the present invention, a positioning groove is provided on the top of the box body, and the top cover assembly includes a cover body, a positioning block is provided at the bottom outer side of the cover body, the positioning block is engaged with the positioning groove, a threaded hole is provided inside the positioning groove, a fixing screw is inserted into the middle of the positioning block, the fixing screw is threadedly connected to the positioning groove, and a pressure strip and a power connection strip are provided in the middle of the bottom end of the cover body, and the pressure strip is engaged with the clamping groove.

[0012] As a preferred technical solution of the present invention, the power strip is electrically connected to the electrode connector, a circuit board is provided inside the cover, a power terminal is fixedly mounted on the top of the cover, and the circuit board is electrically connected to the power terminal and the power strip.

[0013] As a preferred technical solution of the present invention, the clamping piece is provided with a threaded rod with guide rods fixedly installed at both ends on one side, and the box body is provided with a threaded sleeve with two guide holes on one side, and the guide holes are slidably connected to the guide rods.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the integrated hydrogen fuel cell stack structure is fixedly installed with a top cover assembly on the top of the protective shell assembly, and a plurality of hydrogen fuel cell units are fixedly installed inside the protective shell assembly, so that the protective shell assembly and the top cover assembly provide protection for the internal hydrogen fuel cell units, two heat sink covers are arranged on the outside of the membrane electrode sheet and the bipolar plate, and the two heat sinks are fixedly connected, so that the two heat sinks provide protection and pressure for the internal membrane electrode sheet and the bipolar plate, so that the two bipolar plates can fit tightly with the membrane electrode sheet, and a threaded sleeve is connected through the threaded outer side of the threaded rod, and the threaded sleeve is fixedly connected to the box body, so that the threaded rod can be rotated by turning the knob, thereby driving the clamping sheet to cooperate with the box body to fit the multiple hydrogen fuel cell units inside tightly, so that hydrogen, oxygen and cooling water can be passed into the hydrogen fuel cell unit to react and generate current, and the knob can be turned to release the clamping of the clamping sheet on the multiple hydrogen fuel cell units, so that a single hydrogen fuel cell unit can be disassembled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of an integrated hydrogen fuel cell stack structure disclosed in an embodiment of the present invention; Figure 2 An exploded view of an integrated hydrogen fuel cell stack structure disclosed in an embodiment of the present invention; Figure 3 An exploded view of a hydrogen fuel cell unit disclosed in an embodiment of the present invention; Figure 4 An exploded view of a protective shell assembly disclosed in an embodiment of the present invention; Figure 5 An exploded view of a top cover assembly disclosed in an embodiment of the present invention.

[0016] In the figure: 101, protective shell assembly; 10101, box body; 10102, limit groove; 10103, clamping piece; 10104, guide block; 10105, threaded rod; 10106, knob; 10107, guide rod; 10108, threaded sleeve; 10109, guide hole; 10110, positioning groove; 10111, connecting interface; 102, top cover assembly; 10201, cover body; 10202, positioning block; 10203, pressure strip; 10204, power strip; 10205, fixed Screw; 10206, electrical terminal; 103, hydrogen fuel cell unit; 10301, membrane electrode sheet; 10302, bipolar plate; 10303, heat sink; 10304, connecting hole; 10305, proton exchange membrane; 10306, flow slot; 10307, ​​first sealing ring; 10308, electrode connector; 10309, heat sink; 10310, second sealing ring; 10311, limit block; 10312, clamping slot; 10313, connector through hole; 10314, third sealing ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1 - Figure 5 The present invention provides a technical solution: an integrated hydrogen fuel cell stack structure, including a protective shell assembly 101, a top cover assembly 102 is fixedly installed on the top of the protective shell assembly 101, a plurality of hydrogen fuel cell units 103 are fixedly installed inside the protective shell assembly 101, the hydrogen fuel cell units 103 include a membrane electrode sheet 10301, bipolar plates 10302 are arranged on both sides of the membrane electrode sheet 10301, a heat sink 10303 is arranged on one side of the bipolar plate 10302, two heat sinks 10303 are covered on the outside of the membrane electrode sheet 10301 and the bipolar plate 10302, and the two heat sinks 10303 are fixedly connected, and the protective shell assembly 10 The invention comprises a box body 10101, wherein a limiting groove 10102 is provided at the bottom of the inner side of the box body 10101, a guide block 10104 is slidably connected inside the limiting groove 10102, a clamping piece 10103 is fixedly installed on the top of the guide block 10104, a hydrogen fuel cell unit 103 is arranged on one side of the clamping piece 10103, a threaded rod 10105 is rotatably connected to the middle of the side of the clamping piece 10103 away from the hydrogen fuel cell unit 103, a knob 10106 is fixedly installed at one end of the threaded rod 10105, a threaded sleeve 10108 is threadedly connected to the outer side of the threaded rod 10105, and the threaded sleeve 10108 is fixedly connected to the box body 10101.

[0019] In one embodiment of the present invention, further, three connecting holes 10304 are provided at both ends of the membrane electrode sheet 10301, the bipolar plate 10302 and the heat sink 10303, and six connecting interfaces 10111 are provided at one end of the box body 10101 away from the threaded sleeve 10108, and the connecting interfaces 10111 are all connected to the connecting holes 10304.

[0020] According to an embodiment of the present invention, a proton exchange membrane 10305 is fixedly installed in the middle of the membrane electrode sheet 10301, and a flow groove 10306 is opened on the side of the bipolar plate 10302 facing the membrane electrode sheet 10301, and the flow groove 10306 has an S-shaped structure.

[0021] In one embodiment of the present invention, further, the bipolar plate 10302 is provided with a flow groove 10306 on one side of which a first sealing ring 10307 is fixedly installed, and the first sealing ring 10307 is arranged on the outside of the connecting hole 10304 at the bottom of one end and the top of the other end of the flow groove 10306.

[0022] In one embodiment of the present invention, further, a heat dissipation groove 10309 is opened on the side of the heat sink 10303 facing the bipolar plate 10302, and a second sealing ring 10310 is fixedly installed on the side of the heat dissipation groove 10309 of the heat sink 10303, and the second sealing ring 10310 is arranged on the outside of the connecting hole 10304 in the middle of the two ends of the heat dissipation groove 10309.

[0023] According to an embodiment of the present invention, six third sealing rings 10314 are fixedly installed on the side of the heat sink 10303 away from the bipolar plate 10302 , and the third sealing rings 10314 are sleeved on the outside of the connecting hole 10304 .

[0024] In one embodiment of the present invention, further, clamping grooves 10312 are provided at both ends and the middle of the top of the heat sink 10303, limit blocks 10311 are provided at both ends of the bottom of the heat sink 10303, the limit blocks 10311 are snap-connected with the limit grooves 10102, an electrode connector 10308 is provided on the top of one end of the bipolar plate 10302, a connector through hole 10313 is provided on the top of one end of the heat sink 10303, and the electrode connector 10308 passes through the connector through hole 10313.

[0025] An embodiment of the present invention is further provided with a positioning groove 10110 on the top of the box body 10101, and the top cover assembly 102 includes a cover body 10201, a positioning block 10202 is provided at the outer bottom of the cover body 10201, the positioning block 10202 is engaged with the positioning groove 10110, a threaded hole is provided inside the positioning groove 10110, a fixing screw 10205 is inserted into the middle of the positioning block 10202, the fixing screw 10205 is threadedly connected with the positioning groove 10110, a pressure strip 10203 and a power strip 10204 are provided in the middle of the bottom end of the cover body 10201, and the pressure strip 10203 is engaged with the clamping groove 10312.

[0026] In one embodiment of the present invention, further, the power strip 10204 is electrically connected to the electrode connector 10308, a circuit board is provided inside the cover body 10201, a power terminal 10206 is fixedly installed on the top of the cover body 10201, and the circuit board is electrically connected to the power terminal 10206 and the power strip 10204.

[0027] In one embodiment of the present invention, further, the clamping piece 10103 is provided with a threaded rod 10105 with guide rods 10107 fixedly installed at both ends of one side, and the box body 10101 is provided with a threaded sleeve 10108 with two guide holes 10109 opened on one side, and the guide holes 10109 are slidably connected to the guide rods 10107.

[0028] The present invention provides a method for using an integrated hydrogen fuel cell stack structure, wherein a top cover assembly 102 is fixedly installed on the top of a protective shell assembly 101, and a plurality of hydrogen fuel cell units 103 are fixedly installed inside the protective shell assembly 101, so that the protective shell assembly 101 and the top cover assembly 102 provide protection for the internal hydrogen fuel cell units 103, and two heat sinks 10303 are arranged on the outside of the membrane electrode sheet 10301 and the bipolar plate 10302, and the two heat sinks 10303 are fixedly connected, so that the two heat sinks 10303 provide protection and pressure to the internal membrane electrode sheet 10301 and the bipolar plate 10302, so that the two bipolar plates 10302 can be connected to the membrane electrode sheet 1 0301 fits tightly, and a threaded sleeve 10108 is connected to the outer thread of the threaded rod 10105 through a threaded connection. The threaded sleeve 10108 is fixedly connected to the box body 10101, so that the knob 10106 is turned to rotate the threaded rod 10105, thereby driving the clamping piece 10103 to cooperate with the box body 10101 to fit the multiple hydrogen fuel cell units 103 inside tightly, so that hydrogen, oxygen and cooling water can pass into the hydrogen fuel cell unit 103 to react and generate current, and the knob 10106 is turned to release the clamping piece 10103 from clamping the multiple hydrogen fuel cell units 103, so that a single hydrogen fuel cell unit 103 can be disassembled and replaced. The connecting interface 10111 is connected with the connecting hole 10304, which is convenient for connecting with the external pipeline, and convenient for introducing hydrogen, oxygen and cooling water into the hydrogen fuel cell unit 103. The first sealing ring 10307 is arranged on the outside of the connecting hole 10304 at the bottom of one end and the top of the other end of the flow groove 10306, which is convenient for sealing the side of the bipolar plate 10302 with the flow groove 10306, so that hydrogen or oxygen flows through one side of the proton exchange membrane 10305, which is convenient for the reaction to generate current and avoid gas leakage. The second sealing ring 10310 is arranged on the outside of the connecting hole 10304 in the middle of the two ends of the heat dissipation groove 10309, which is convenient for sealing the heat sink 103 03 is provided with a heat dissipation groove 10309 on one side for sealing, so that cooling water can flow through one side of the bipolar plate 10302 for heat dissipation to avoid cooling water leakage. The fixing screw 10205 is threadedly connected with the positioning groove 10110, so that the top cover assembly 102 and the protective shell assembly 101 can be fixedly connected, so as to protect the internal hydrogen fuel cell unit 103 and disassemble the top cover assembly 102, so as to disassemble and replace the internal hydrogen fuel cell unit 103. The circuit board is electrically connected to the power terminal 10206 and the power bar 10204, so as to connect multiple hydrogen fuel cell units 103 in parallel, so as to facilitate external equipment to use the electricity generated by the device.

Claims

1. An integrated hydrogen fuel cell stack structure, characterized in that: The invention comprises a protective shell component (101), a top cover component (102) is fixedly mounted on the top of the protective shell component (101), a plurality of hydrogen fuel cell units (103) are fixedly mounted inside the protective shell component (101), the hydrogen fuel cell units (103) comprise a membrane electrode sheet (10301), bipolar plates (10302) are arranged on both sides of the membrane electrode sheet (10301), a heat sink (10303) is arranged on one side of the bipolar plate (10302), two heat sinks (10303) are covered on the outside of the membrane electrode sheet (10301) and the bipolar plate (10302), and the two heat sinks (10303) are fixedly connected, the protective shell component (101) comprises a box body (10101), the box body A limiting groove (10102) is provided at the bottom of the inner side of the body (10101), a guide block (10104) is slidably connected inside the limiting groove (10102), a clamping sheet (10103) is fixedly installed on the top of the guide block (10104), the hydrogen fuel cell unit (103) is arranged on one side of the clamping sheet (10103), a threaded rod (10105) is rotatably connected to the middle of the side of the clamping sheet (10103) away from the hydrogen fuel cell unit (103), a knob (10106) is fixedly installed at one end of the threaded rod (10105), a threaded sleeve (10108) is threadedly connected to the outer side of the threaded rod (10105), and the threaded sleeve (10108) is fixedly connected to the box body (10101).

2. An integrated hydrogen fuel cell stack structure according to claim 1, characterized in that: Three communication holes (10304) are provided at both ends of the membrane electrode sheet (10301), the bipolar plate (10302) and the heat sink (10303); six communication interfaces (10111) are provided at one end of the box body (10101) away from the threaded sleeve (10108); and the communication interfaces (10111) are all connected to the communication holes (10304).

3. The integrated hydrogen fuel cell stack structure according to claim 2, characterized in that: A proton exchange membrane (10305) is fixedly installed in the middle of the membrane electrode sheet (10301), and a flow groove (10306) is opened on the side of the bipolar plate (10302) facing the membrane electrode sheet (10301), and the flow groove (10306) is in an S-shaped structure.

4. The integrated hydrogen fuel cell stack structure according to claim 3, characterized in that: The bipolar plate (10302) is provided with a circulation groove (10306) on one side of which a first sealing ring (10307) is fixedly installed, and the first sealing ring (10307) is arranged on the outside of the connecting hole (10304) at the bottom of one end and the top of the other end of the circulation groove (10306).

5. The integrated hydrogen fuel cell stack structure according to claim 4, characterized in that: The heat sink (10303) is provided with a heat dissipation groove (10309) on the side facing the bipolar plate (10302), and a second sealing ring (10310) is fixedly installed on the side of the heat sink (10303) provided with the heat dissipation groove (10309), and the second sealing ring (10310) is arranged on the outside of the connecting hole (10304) in the middle of both ends of the heat dissipation groove (10309).

6. The integrated hydrogen fuel cell stack structure according to claim 5, characterized in that: Six third sealing rings (10314) are fixedly mounted on the side of the heat sink (10303) away from the bipolar plate (10302), and the third sealing rings (10314) are sleeved on the outside of the connecting hole (10304).

7. An integrated hydrogen fuel cell stack structure according to claim 6, characterized in that: The heat sink (10303) is provided with clamping grooves (10312) at both ends and the middle of the top, and limit blocks (10311) are provided at both ends of the bottom of the heat sink (10303), and the limit blocks (10311) are snap-connected with the limit grooves (10102). An electrode connector (10308) is provided at the top of one end of the bipolar plate (10302), and a connector through hole (10313) is provided at the top of one end of the heat sink (10303), and the electrode connector (10308) passes through the connector through hole (10313).

8. The integrated hydrogen fuel cell stack structure according to claim 1, characterized in that: A positioning groove (10110) is provided at the top of the box body (10101); the top cover assembly (102) comprises a cover body (10201); a positioning block (10202) is provided at the bottom of the outer side of the cover body (10201); the positioning block (10202) is engaged with the positioning groove (10110); a threaded hole is provided inside the positioning groove (10110); a fixing screw (10205) is inserted in the middle of the positioning block (10202); the fixing screw (10205) is threadedly connected to the positioning groove (10110); a pressure strip (10203) and a power connection strip (10204) are provided at the middle of the bottom end of the cover body (10201); the pressure strip (10203) is engaged with the pressing groove (10312).

9. The integrated hydrogen fuel cell stack structure according to claim 8, characterized in that: The power connection bar (10204) is electrically connected to the electrode connector (10308); a circuit board is provided inside the cover body (10201); a power connection terminal (10206) is fixedly mounted on the top of the cover body (10201); and the circuit board is electrically connected to the power connection terminal (10206) and the power connection bar (10204).

10. The integrated hydrogen fuel cell stack structure according to claim 1, characterized in that: The clamping piece (10103) is provided with a threaded rod (10105) with guide rods (10107) fixedly mounted at both ends of one side thereof, and the box body (10101) is provided with a threaded sleeve (10108) with two guide holes (10109) opened on one side thereof, and the guide holes (10109) are slidably connected to the guide rods (10107).

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