A fuel cell stack internal pressure self-controlled safe feeding structure

Abstract

The present invention discloses a fuel cell stack internal pressure self-controlled safe feeding structure, including a fuel cell stack assembly, wherein one end of the fuel cell stack assembly is provided with an internal pressure piston assembly, a driving seat rod assembly and a feeding self-control ball valve assembly, wherein the internal pressure piston assembly forms a pressure sensing structure at one end of the fuel cell stack assembly, and the driving seat rod assembly forms a self-control structure for the feeding self-control ball valve assembly at one end of the fuel cell stack assembly. When the present invention is used, when the internal pressure of the fuel cell stack assembly increases and the internal pressure piston assembly moves upward, the driving seat rod assembly moves downward, and the guiding convex slider is inserted into the spiral slide groove of the guide rail on the ball valve top seat slide rod. Through the cooperation of the above structure, the feeding self-control ball valve is rotatably connected in the feeding ball tube, and the ball valve through groove and the feeding straight seat tube are directly opposite to form the feeding structure of the fuel cell stack assembly, and the size of the ball valve through groove and the feeding straight seat tube determines the feeding speed of the fuel cell stack assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of fuel cell stacks, and in particular relates to a fuel cell stack internal pressure self-controlled safety feeding structure. Background Art

[0002] A battery stack is not a stack of actual batteries, but a term for fuel cells. It refers to a stack of multiple fuel cells in order to obtain a voltage for practical applications. The key to a battery stack is the materials and manufacturing technology that make up the battery stack. The materials must have sufficient chemical and thermal stability. The electrochemical performance must meet the requirements, and the various technical conditions must also be consistent to achieve good benefits. The volume and weight should be minimized.

[0003] The existing technology has the following problems: hydrogen fuel cells are an important design of fuel cell stacks. About 70% of the combustion energy of traditional thermal power plants is consumed by large equipment such as boilers and steam turbine generators, which consume a lot of energy and emit a lot of harmful substances during combustion. The use of hydrogen fuel cells for power generation directly converts the chemical energy of the fuel into electrical energy without combustion. The energy conversion rate can reach 60% to 80%, and there is less pollution and noise. The device can be large or small and is very flexible. In order to ensure the efficiency of the internal reaction of the hydrogen fuel cell, the continuity of the feed and the stability of the internal pressure must be ensured. The existing fuel cell stack lacks an internal pressure self-controlled safety feed structure, which will lead to safety hazards or low actual reaction efficiency when the fuel cell stack is actually used. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a fuel cell stack internal pressure self-controlled safe feeding structure, which has the characteristics of reliable use.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fuel cell stack internal pressure self-controlled safety feeding structure, comprising a fuel cell stack assembly, one end of which is provided with an internal pressure piston assembly, a driving seat rod assembly and a feeding self-control ball valve assembly, the internal pressure piston assembly forms a pressure sensing structure at one end of the fuel cell stack assembly, and the driving seat rod assembly forms a self-control structure for the feeding self-control ball valve assembly at one end of the fuel cell stack assembly;

[0006] The fuel cell stack assembly comprises a fuel cell stack, one end of the fuel cell stack is provided with an inner pressure seat cap tube and a feed straight seat tube, the feed straight seat tube is provided with a feed ball tube, the inner pressure seat cap tube is provided with a guide slide hole, a support vertical platform and a guide slide seat platform, and a driving gear is rotatably provided on the support vertical platform;

[0007] The internal pressure piston assembly includes a piston slide rod, an internal pressure piston is arranged at the bottom of the piston slide rod, and a first guide vertical slide groove is arranged on one side of the piston slide rod, a first fixed vertical tooth plate is arranged inside the first guide vertical slide groove, and a return spring is sleeved on the piston slide rod.

[0008] Preferably, the driving seat rod assembly comprises a driving slide rod, a guide base slide is fixedly provided at the bottom of the driving slide rod, a guide convex slide is fixedly provided on the inner wall of the guide base slide, a second guide vertical slide groove is provided on one side of the driving slide rod, and a second fixed vertical tooth plate is provided inside the second guide vertical slide groove;

[0009] The feed automatic control ball valve assembly comprises a feed automatic control ball valve, a ball valve through groove is arranged on the feed automatic control ball valve, a ball valve top seat slide rod is fixedly arranged on the top of the feed automatic control ball valve, and a guide rail spiral slide groove is arranged on the ball valve top seat slide rod.

[0010] Preferably, the piston slide rod slides through the guide slide hole and the top of the internal pressure seat cap tube, the internal pressure piston slides up and down in the internal pressure seat cap tube like a piston, the top of the return spring abuts against the top of the internal pressure seat cap tube, and the bottom of the return spring abuts against the internal pressure piston, and through the push of the return spring, the internal pressure piston is in a structure under pressure in the internal pressure seat cap tube.

[0011] Preferably, the driving slide rod slides up and down in the guide slide platform, the guide base slide is located below the guide slide platform, and the driving seat rod assembly is located on one side of the internal pressure seat cap tube and is arranged opposite to the internal pressure piston assembly.

[0012] Preferably, the bottom of the ball valve top seat slide rod is rotatably connected to the top of the feed ball tube through a bearing seat, the feed automatic control ball valve is rotatably connected in the feed ball tube, the ball valve groove and the feed straight seat tube are opposite to form a feed structure of the fuel cell stack assembly, and the size of the ball valve groove and the feed straight seat tube determines the speed of feeding the fuel cell stack assembly.

[0013] Preferably, one side of the driving gear is meshed with the first fixed vertical tooth plate on the piston slide rod, and the other side of the driving gear is meshed with the second fixed vertical tooth plate on the driving slide seat rod, and the internal pressure piston assembly and the driving seat rod assembly form an offset sliding structure on both sides of the driving gear.

[0014] Preferably, the guide base slide is sleeved on the outside of the ball valve top seat slide rod and slides up and down on the outside of the ball valve top seat slide rod, and the guide convex slider is inserted into the guide rail spiral groove on the ball valve top seat slide rod.

[0015] Preferably, the increase in internal pressure of the fuel cell stack assembly will cause the internal pressure piston assembly to form a high-pressure upper structure in the internal pressure seat cap tube, the driving seat rod assembly to form a high-pressure downward structure on one side of the internal pressure seat cap tube, and the feed automatic control ball valve assembly to form a high-pressure self-closing structure in the feed ball tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is used, an internal pressure piston assembly is provided at one end of the fuel cell stack assembly, and the internal pressure piston assembly forms a pressure sensing structure at one end of the fuel cell stack assembly. In actual use, the piston slide rod slides through the guide slide hole and the top of the internal pressure seat cap tube, and the internal pressure piston slides up and down in the internal pressure seat cap tube in a piston-like manner. Through the top push of the return spring, the internal pressure piston is in a pressure-resisting structure in the internal pressure seat cap tube. When the internal reaction pressure of the fuel cell stack assembly increases abnormally, the internal pressure of the fuel cell stack assembly will overcome the top pressure of the return spring to achieve the upward movement of the internal pressure piston in the internal pressure seat cap tube. At this time, the piston slide rod moves upward, and at this time one side of the driving gear is meshed with the first fixed vertical tooth plate on the piston slide rod, and the other side of the driving gear is meshed with the second fixed vertical tooth plate on the driving slide seat rod. When the piston slide rod moves upward, through the cooperation of the above structure, the internal pressure piston assembly and the driving seat rod assembly form a staggered sliding structure on both sides of the driving gear, that is, when the internal pressure piston assembly moves upward, the driving seat rod assembly moves downward. When the internal pressure piston assembly When the valve body moves downward, the seat rod assembly is driven to move upward. When the internal pressure of the fuel cell stack assembly increases and the internal pressure piston assembly moves upward, the seat rod assembly is driven to move downward. At this time, the guide base slide sleeve is sleeved on the outside of the ball valve top seat slide rod and slides under the outside of the ball valve top seat slide rod. At this time, the guide convex slide head is inserted into the guide rail spiral slide groove on the ball valve top seat slide rod. Through the cooperation of the above structure, the feed automatic control ball valve is rotated and connected in the feed ball tube. The ball valve through groove and the feed straight seat tube are directly opposite to form the feed structure of the fuel cell stack assembly. The size of the ball valve through groove and the feed straight seat tube determines the speed of the fuel cell stack assembly feeding. In this way, the feed flow rate of the fuel cell stack assembly is controlled. Through the cooperation of the above structure, when the internal pressure of the fuel cell stack assembly increases abnormally, the feed flow rate of the fuel cell stack assembly is naturally reduced through the cooperation of the internal pressure piston assembly, the drive seat rod assembly and the feed automatic control ball valve assembly, so that a safe and stable reaction environment is formed inside the fuel cell stack assembly. At the same time, the safe and stable reaction environment is conducive to maintaining and stabilizing the reaction efficiency inside the fuel cell stack assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 An exploded view of the present invention;

[0019] Figure 3 A three-dimensional diagram of a partial structure of the present invention;

[0020] Figure 4 is a three-dimensional diagram of a fuel cell stack assembly of the present invention;

[0021] Figure 5 is a three-dimensional diagram of the internal pressure piston assembly of the present invention;

[0022] Figure 6 A perspective view of a drive seat post assembly of the present invention;

[0023] Figure 7 It is a stereoscopic diagram of the feed automatic control ball valve assembly of the present invention;

[0024] In the figure: 100, fuel cell stack assembly; 101, fuel cell stack; 102, driving gear; 103, guide slide hole; 104, support vertical platform; 105, guide slide platform; 106, internal pressure seat cap tube; 107, feed ball tube; 108, feed straight seat tube; 200, internal pressure piston assembly; 201, piston slide rod; 202, first guide vertical slide groove; 203, first fixed vertical tooth plate; 204, return spring; 205, internal pressure piston; 300, drive seat rod assembly; 301, drive slide rod; 302, second guide vertical slide groove; 303, second fixed vertical tooth plate; 304, guide base slide; 305, guide convex slider; 400, feed automatic control ball valve assembly; 401, feed automatic control ball valve; 402, ball valve through groove; 403, ball valve top seat slide rod; 404, guide rail spiral slide groove. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-7 The present invention provides the following technical solutions: a fuel cell stack internal pressure self-controlled safety feeding structure, comprising a fuel cell stack assembly 100, an internal pressure piston assembly 200, a driving seat rod assembly 300 and a feeding self-control ball valve assembly 400 are arranged at one end of the fuel cell stack assembly 100, the internal pressure piston assembly 200 forms a pressure sensing structure at one end of the fuel cell stack assembly 100, and the driving seat rod assembly 300 forms a self-control structure for the feeding self-control ball valve assembly 400 at one end of the fuel cell stack assembly 100;

[0027] The fuel cell stack assembly 100 includes a fuel cell stack 101, one end of the fuel cell stack 101 is provided with an inner pressure seat cap tube 106 and a feed straight seat tube 108, the feed straight seat tube 108 is provided with a feed ball tube 107, the inner pressure seat cap tube 106 is provided with a guide slide hole 103, a support vertical platform 104 and a guide slide seat platform 105, and the support vertical platform 104 is rotatably provided with a driving gear 102;

[0028] The internal pressure piston assembly 200 includes a piston slide 201, an internal pressure piston 205 is arranged at the bottom of the piston slide 201, and a first guide vertical slide groove 202 is arranged on one side of the piston slide 201, and a first fixed vertical tooth plate 203 is arranged inside the first guide vertical slide groove 202. A return spring 204 is sleeved on the piston slide 201, and the piston slide 201 passes through the guide slide hole 103 and slides through the top of the internal pressure seat cap tube 106. The internal pressure piston 205 slides up and down in the internal pressure seat cap tube 106 like a piston, and the top of the return spring 204 abuts against At the top of the internal pressure seat cap tube 106, the bottom of the return spring 204 abuts against the internal pressure piston 205. Through the push of the return spring 204, the internal pressure piston 205 is in a pressure-down structure in the internal pressure seat cap tube 106. The increase in the internal pressure of the fuel cell stack assembly 100 will cause the internal pressure piston assembly 200 to form a high-pressure upward structure in the internal pressure seat cap tube 106, drive the seat rod assembly 300 to form a high-pressure downward structure on one side of the internal pressure seat cap tube 106, and the feed automatic control ball valve assembly 400 to form a high-pressure self-closing structure in the feed ball tube 107.

[0029] The driving seat rod assembly 300 includes a driving slide rod 301, a guide base slide 304 is fixedly provided at the bottom of the driving slide rod 301, a guide convex slide head 305 is fixedly provided on the inner wall of the guide base slide 304, a second guide vertical slide groove 302 is provided on one side of the driving slide rod 301, and a second fixed vertical tooth plate 303 is provided inside the second guide vertical slide groove 302. The driving slide rod 301 slides up and down in the guide slide platform 105, and the guide base slide 304 is located below the guide slide platform 105. The driving seat rod assembly 300 is located on one side of the internal pressure seat cap tube 106 and is arranged opposite to the internal pressure piston assembly 200, one side of the driving gear 102 is meshed with the first fixed vertical tooth plate 203 on the piston slide rod 201, and the other side of the driving gear 102 is meshed with the second fixed vertical tooth plate 303 on the driving slide rod 301, and the internal pressure piston assembly 200 and the driving seat rod assembly 300 form a staggered sliding structure on both sides of the driving gear 102;

[0030] The feed automatic control ball valve assembly 400 includes a feed automatic control ball valve 401, a ball valve through groove 402 is provided on the feed automatic control ball valve 401, and a ball valve top seat slide rod 403 is fixedly provided on the top of the feed automatic control ball valve 401, a guide rail spiral slide groove 404 is provided on the ball valve top seat slide rod 403, and the bottom of the ball valve top seat slide rod 403 is rotatably connected to the top of the feed ball tube 107 through a bearing seat, and the feed automatic control ball valve 401 is rotatably connected in the feed ball tube 107. The ball valve groove 402 and the feed straight seat tube 108 are opposite to each other to form the feed structure of the fuel cell stack assembly 100. The size of the ball valve groove 402 and the feed straight seat tube 108 determines the feeding speed of the fuel cell stack assembly 100. The guide base slide 304 is sleeved on the outside of the ball valve top seat slide rod 403 and slides up and down on the outside of the ball valve top seat slide rod 403. The guide convex slider 305 is inserted into the guide rail spiral groove 404 on the ball valve top seat slide rod 403.

[0031] The working principle and use process of the present invention: When the present invention is used, an internal pressure piston assembly 200 is provided at one end of the fuel cell stack assembly 100, and the internal pressure piston assembly 200 forms a pressure sensing structure at one end of the fuel cell stack assembly 100. In actual use, the piston slide rod 201 passes through the guide slide hole 103 and the top of the internal pressure seat cap tube 106 to slide, and the internal pressure piston 205 slides up and down in the internal pressure seat cap tube 106 like a piston. Through the push of the return spring 204, the internal pressure piston 205 is in a pressure-resisting structure in the internal pressure seat cap tube 106. When the internal reaction pressure of the fuel cell stack assembly 100 increases abnormally, the fuel cell stack assembly 100 The internal pressure will overcome the top pressure of the return spring 204, and the internal pressure piston 205 will move upward in the internal pressure seat cap tube 106. At this time, the piston slide rod 201 moves upward, and at this time, one side of the driving gear 102 is meshed with the first fixed vertical tooth plate 203 on the piston slide rod 201, and the other side of the driving gear 102 is meshed with the second fixed vertical tooth plate 303 on the driving slide seat rod 301. When the piston slide rod 201 moves upward, through the cooperation of the above structure, the internal pressure piston assembly 200 and the driving seat rod assembly 300 form a staggered sliding structure on both sides of the driving gear 102, that is, when the internal pressure piston assembly 200 moves upward, the driving seat rod assembly 300 moves downward. When the assembly 200 moves down, the seat rod assembly 300 is driven to move up. When the internal pressure of the fuel cell stack assembly 100 increases and the internal pressure piston assembly 200 moves up, the seat rod assembly 300 is driven to move down. At this time, the guide base slide 304 is sleeved on the outside of the ball valve top seat slide rod 403 and slides under the outside of the ball valve top seat slide rod 403. At this time, the guide convex slider 305 is inserted into the guide rail spiral slide groove 404 on the ball valve top seat slide rod 403. Through the cooperation of the above structure, the feed automatic control ball valve 401 is rotatably connected in the feed ball tube 107, and the ball valve groove 402 is opposite to the feed straight seat tube 108 to form the feed structure of the fuel cell stack assembly 100. The size of the through groove 402 and the feed straight seat tube 108 determines the feeding speed of the fuel cell stack assembly 100. In this way, the feed flow rate of the fuel cell stack assembly 100 is controlled. Through the cooperation of the above-mentioned structure, when the internal pressure of the fuel cell stack assembly 100 increases abnormally, the feed flow rate of the fuel cell stack assembly 100 is naturally reduced through the cooperation of the internal pressure piston assembly 200, the drive seat rod assembly 300 and the feed automatic control ball valve assembly 400, so that a safe and stable reaction environment is formed inside the fuel cell stack assembly 100. At the same time, the safe and stable reaction environment is conducive to maintaining and stabilizing the internal reaction efficiency of the fuel cell stack assembly 100.

[0032] 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 fuel cell stack internal pressure self-controlled safety feeding structure, comprising a fuel cell stack assembly (100), characterized in that: An internal pressure piston assembly (200), a driving seat rod assembly (300) and a feed self-control ball valve assembly (400) are provided at one end of the fuel cell stack assembly (100); the internal pressure piston assembly (200) forms a pressure sensing structure at one end of the fuel cell stack assembly (100); and the driving seat rod assembly (300) forms a self-control structure for the feed self-control ball valve assembly (400) at one end of the fuel cell stack assembly (100); The fuel cell stack assembly (100) comprises a fuel cell stack (101), one end of the fuel cell stack (101) is provided with an inner pressure seat cap tube (106) and a feed straight seat tube (108), the feed straight seat tube (108) is provided with a feed ball tube (107), the inner pressure seat cap tube (106) is provided with a guide slide hole (103), a support vertical platform (104) and a guide slide seat platform (105), and the support vertical platform (104) is rotatably provided with a driving gear (102); The internal pressure piston assembly (200) comprises a piston slide rod (201), an internal pressure piston (205) is arranged at the bottom of the piston slide rod (201), and a first guide vertical slide groove (202) is arranged on one side of the piston slide rod (201), a first fixed vertical tooth plate (203) is arranged inside the first guide vertical slide groove (202), and a return spring (204) is sleeved on the piston slide rod (201); The driving seat rod assembly (300) comprises a driving slide rod (301), a guide base slide (304) is fixedly arranged at the bottom of the driving slide rod (301), a guide convex slide (305) is fixedly arranged on the inner wall of the guide base slide (304), a second guide vertical slide groove (302) is arranged on one side of the driving slide rod (301), and a second fixed vertical tooth plate (303) is arranged inside the second guide vertical slide groove (302); The feed automatic control ball valve assembly (400) comprises a feed automatic control ball valve (401), a ball valve through groove (402) is arranged on the feed automatic control ball valve (401), and a ball valve top seat slide rod (403) is fixedly arranged on the top of the feed automatic control ball valve (401), and a guide rail spiral slide groove (404) is arranged on the ball valve top seat slide rod (403); The piston slide rod (201) passes through the guide slide hole (103) and slides through the top of the internal pressure seat cap tube (106); the internal pressure piston (205) slides up and down in the internal pressure seat cap tube (106) in a piston-like manner; the top of the return spring (204) abuts against the top of the internal pressure seat cap tube (106), and the bottom of the return spring (204) abuts against the internal pressure piston (205); through the push of the return spring (204), the internal pressure piston (205) is in a pressure-pressed structure in the internal pressure seat cap tube (106); The driving slide rod (301) slides up and down in the guide slide platform (105), the guide base slide platform (304) is located below the guide slide platform (105), and the driving seat rod assembly (300) is located on one side of the internal pressure seat cap tube (106) and is arranged opposite to the internal pressure piston assembly (200); The bottom of the ball valve top seat slide rod (403) is rotatably connected to the top of the feed ball tube (107) through a bearing seat, and the feed automatic control ball valve (401) is rotatably connected in the feed ball tube (107). The ball valve through groove (402) and the feed straight seat tube (108) are opposite to form a feed structure of the fuel cell stack assembly (100). The size of the ball valve through groove (402) and the feed straight seat tube (108) determines the speed of the fuel cell stack assembly (100) feeding. One side of the driving gear (102) is meshed with a first fixed vertical tooth plate (203) on the piston slide rod (201), and the other side of the driving gear (102) is meshed with a second fixed vertical tooth plate (303) on the driving slide seat rod (301), and the internal pressure piston assembly (200) and the driving seat rod assembly (300) form a staggered sliding structure on both sides of the driving gear (102); The guide base slide (304) is sleeved on the outside of the ball valve top seat slide rod (403) and slides up and down on the outside of the ball valve top seat slide rod (403), and the guide convex slider (305) is inserted into the guide rail spiral slide groove (404) on the ball valve top seat slide rod (403); When the internal pressure of the fuel cell stack assembly (100) increases, the internal pressure piston assembly (200) forms a high-pressure upward structure in the internal pressure seat cap tube (106), the driving seat rod assembly (300) forms a high-pressure downward structure on one side of the internal pressure seat cap tube (106), and the feed automatic control ball valve assembly (400) forms a high-pressure self-closing structure in the feed ball tube (107).

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