CN110581297B - Hydrogen-oxygen fuel cell box based on negative Poisson ratio material - Google Patents

Hydrogen-oxygen fuel cell box based on negative Poisson ratio material Download PDF

Info

Publication number
CN110581297B
CN110581297B CN201910802196.9A CN201910802196A CN110581297B CN 110581297 B CN110581297 B CN 110581297B CN 201910802196 A CN201910802196 A CN 201910802196A CN 110581297 B CN110581297 B CN 110581297B
Authority
CN
China
Prior art keywords
box body
hydrogen
negative poisson
box
upper cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201910802196.9A
Other languages
Chinese (zh)
Other versions
CN110581297A (en
Inventor
周冠
闫鹏飞
赵万忠
王源隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing University of Aeronautics and Astronautics
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201910802196.9A priority Critical patent/CN110581297B/en
Publication of CN110581297A publication Critical patent/CN110581297A/en
Application granted granted Critical
Publication of CN110581297B publication Critical patent/CN110581297B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a hydrogen-oxygen fuel cell box based on a negative Poisson's ratio material, which belongs to the field of new energy automobiles. The invention comprises the following steps: a protection box and a battery pack; the protection box includes: the battery is integrally placed in the box body, a negative Poisson ratio three-dimensional structure material is filled in the box body, the negative Poisson ratio three-dimensional structure material is formed by transversely and longitudinally arraying a negative Poisson ratio basic structure, and the negative Poisson ratio basic structure is formed by crossing every two three negative Poisson ratio cells at an angle of 90 degrees.

Description

Hydrogen-oxygen fuel cell box based on negative Poisson ratio material
Technical Field
The invention belongs to the field of new energy automobiles, and particularly relates to a hydrogen-oxygen fuel cell box based on a negative Poisson's ratio material.
Background
With continuous progress and development of industrial technologies, more and more automobiles begin to adopt emerging energy sources to replace traditional fuel oil, most of the automobiles are powered by batteries, and the hydrogen-oxygen fuel battery has the advantages of complete replacement of the fuel oil, high energy conversion efficiency, zero emission, various fuel sources, flexible availability from renewable energy sources and the like on the fuel, so that the hydrogen-oxygen fuel battery is considered as one of important directions for realizing sustainable development of automobile industry in the future, and is also one of ideal schemes for solving global energy and environment.
The working principle of the hydrogen-oxygen fuel cell is as follows: during operation, hydrogen is supplied to the negative electrode, oxygen is supplied to the positive electrode, and the hydrogen is decomposed into positive ions H under the action of a catalyst on the negative electrode+And an electron e-The hydrogen ions reach the anode through the proton exchange membrane, the electrons move to the anode along the external circuit, the electric load is connected in the external circuit, and on the anode, the oxygen and the hydrogen ions reaching the anode through the proton exchange membrane absorb the electrons reaching the anode to form water.
The biggest problem of the existing hydrogen-oxygen fuel cell lies in the safety problem. The hydrogen is extremely active, and once the high-pressure hydrogen storage device encounters severe collision, the hydrogen can be leaked and even explode, which is a great safety hazard of the hydrogen-oxygen fuel cell. The existing protection measures for hydrogen-oxygen fuel cells mainly aim at the protection of hydrogen cylinders, mainly starting from the walls of the hydrogen cylinders, and by material and structural reinforcement. However, in the face of a severe collision, there is still a risk of leakage of the hydrogen cylinders, and other parts of the battery are not well protected, and damage to the hydrogen cylinders under severe collision also affects the operation and life of the battery.
Disclosure of Invention
The invention provides a hydrogen-oxygen fuel cell box based on a negative Poisson's ratio material, which puts the integral structure of a hydrogen-oxygen fuel cell into a box body shell filled with a negative Poisson's ratio, thereby lightening the damage of a hydrogen cylinder and a cell reaction part to an automobile when the automobile meets severe collision, improving the integral safety of the hydrogen-oxygen fuel cell and ensuring the stable running of the automobile.
In order to achieve the purpose, the invention adopts the following technical scheme:
a negative poisson's ratio material based hydrogen-oxygen fuel cell case comprising: a protection box and a battery pack; the protection box includes: the upper cover plate 1 is provided with a wire hole 20, so that wires connected with a positive electrode 30 and a negative electrode 22 of a battery part in the box body can be connected with a load outside the box body, and a clamping groove b26 corresponding to the positions of the positive electrode and the negative electrode is arranged on one side of the upper cover plate 1, which is provided with the wire hole 20; one side of the box body bottom plate 7 is provided with a groove 13 for placing the hydrogen bottle 4 and a pump groove 10 for placing the pump body 14, the other side of the box body bottom plate 7 is provided with a clamping groove a25 corresponding to the positions of the positive and negative electrodes, a hydrogen chamber is formed between the vertical baffle plate 21 and the negative electrode 22 and used for storing unreacted hydrogen, the vertical baffle plate 21 is provided with an air hole 11, the air hole 11 is connected with the pump body 14, the pump body 14 is used for circulating the residual hydrogen in each reaction, two catalyst layers platinum 23 are tightly attached to the negative electrode 22 and the positive electrode 30, a proton exchange layer 24 is arranged between the two catalyst layers platinum 23, the negative electrode 22 and the positive electrode 30 are connected with the catalyst layer 23, the catalyst layer 23 and the proton exchange layer 24 through welding, and the whole body is fixed in the clamping grooves a25 and the clamping groove b26 on the upper cover plate 1 and the bottom plate 7; an oxygen chamber is formed between the inner wall of the box body 2 and the positive electrode 30, an oxygen hole 28 is formed in one side of the inner wall of the box body 2 close to the positive electrode, the inner part of the side wall of the periphery of the box body 2 is in a hollow design, a negative poisson ratio three-dimensional structure material is filled in the inner part, the negative poisson ratio three-dimensional structure material is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, the negative poisson ratio basic structure is formed by crossing three negative poisson ratio cells in a 90-degree mode in pairs, the 1/4 structure of the negative poisson ratio cell is composed of a first transverse edge, a first inclined edge, a second inclined edge and a first vertical edge, the side length of the first transverse edge is d/2, the side length of the first inclined edge is e, the side length of the second inclined edge is f, the side length of the first vertical edge is g/2, the angle formed by the first transverse edge and the first inclined edge is beta, the angle formed by the first inclined edge and the second inclined edge is theta, and the angle formed by the second inclined edge and the first vertical edge is theta, wherein, g is 1.8mm-2.2mm, β is σ, the negative poisson ratio cell thickness t is 0.8mm, and the height h is 1 mm.
In the structure, the periphery of the upper cover plate 1 is provided with the threaded holes d19, the lower side of the upper cover plate 1 is provided with the boss which can be clamped in the box body 2, the lower side of the boss is provided with the clamping groove b26 aiming at the positions of the positive electrode and the negative electrode, and the four corners of the boss and the four corners of the upper cover plate are chamfered with round corners; two threaded holes b9 are formed in two sides of each groove 13 of the box body bottom plate 7 and used for being matched with the integrated clamping ring 3 through long bolts 15 to fix the hydrogen cylinder 4, the pump body 14 is fixed through the small clamping ring 18, a circle of threaded holes a8 are formed in the periphery of the box body bottom plate 7, and four corners of the box body bottom plate are provided with fillets which are the same as those of the upper cover plate 1; the corresponding positions of the upper surface and the lower surface of the box body 2 are provided with screw holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7, thereby can carry out upper cover plate 1 through short bolt 12, the cooperation of box 2 and box bottom plate 7, four angular designs of box 2 have the fillet as upper cover plate 1 and box bottom plate 7, install filter screen 29 on the oxygen hole 28 and prevent dust, there are two hydrogen storage bottle 4 in every box 2, there is integral type valve port 5 hydrogen storage bottle 4 head, valve port 5 between two hydrogen storage bottle 4 passes through pipeline 6 and links to each other, valve port 5 of second hydrogen storage bottle 4 passes through pipeline 6 with pump body 14 entry and links to each other, two exports of pump body 14 opposite side also pass through pipeline 6 with the gas pocket on the vertical baffle 21 and link to each other, valve port 5 of first hydrogen storage bottle 4 also passes through pipeline 6 with gas pocket 16 on box 2 and links to each other, gas pocket 16 can be aerifyd to the hydrogen bottle through the external world.
Has the advantages that: the invention provides a hydrogen-oxygen fuel cell box based on a negative Poisson ratio material, wherein a hydrogen cylinder and a reaction part are integrated into a box body, the box body is convenient to disassemble and assemble on the whole, internal equipment is convenient to overhaul, the occupied volume of the whole body is reduced, and the whole structure is convenient to protect a cell. The battery box body has the advantages that the four walls of the battery box body are of a hollow structure and are filled with negative Poisson's ratio materials, and the negative Poisson's ratio materials have excellent performance in energy absorption, so that the impact on a hydrogen cylinder, an oxygen cylinder and a reaction part when an automobile is collided can be effectively reduced.
Drawings
FIG. 1 is a view showing the composition of a battery box;
FIG. 2 is a schematic view of a bottom plate of the case;
FIG. 3 is a schematic diagram of negative Poisson ratio cell parameters;
FIG. 4 is a basic structure diagram of a negative Poisson ratio;
FIG. 5 is a filling diagram of a single layer of negative Poisson's ratio material;
in the figure, 1 is an upper cover plate, 2 is a box body, 3 is an integrated snap ring, 4 is a hydrogen cylinder, 5 is a valve port, 6 is a pipeline, 7 is a box bottom plate, 8 is a threaded hole a, 9 is a threaded hole b, 10 is a pump groove, 11 is an air hole, 12 is a bolt, 13 is a groove for placing the hydrogen cylinder, 14 is a pump body, 15 is a long bolt, 16 is a box air hole, 17 is a threaded hole c, 18 is a small snap ring, 19 is a threaded hole d, 20 is an electric wire hole, 21 is a vertical baffle, 22 is a negative electrode, 23 is a catalyst layer platinum, 24 is a proton exchange layer, 25 is a clamping groove a, 26 is a clamping groove b, 27 is a through hole, 28 is an oxygen hole, 29 is a filter screen, and 30 is a positive electrode.
Detailed Description
The invention is described in detail below with reference to the following figures and specific examples:
example 1
As shown in fig. 1, a negative poisson's ratio material based hydrogen-oxygen fuel cell case comprises: a protection box and a battery pack; the protection box includes: the upper cover plate 1 is provided with a wire hole 20, so that wires connected with a positive electrode 30 and a negative electrode 22 of a battery part in the box body can be connected with a load outside the box body, and a clamping groove b26 corresponding to the positions of the positive electrode and the negative electrode is arranged on one side of the upper cover plate 1, which is provided with the wire hole 20; as shown in fig. 2, a groove 13 for placing the hydrogen cylinder 4 and a pump groove 10 for placing the pump body 14 are designed on one side of the bottom plate 7 of the case, a clamping groove a25 for aligning and positioning the negative and positive electrodes is designed on the other side of the bottom plate 7 of the case, a hydrogen chamber is formed between the vertical baffle 21 and the negative electrode 22 for storing unreacted hydrogen, an air hole 11 is formed on the vertical baffle 21, the air hole 11 is connected with the pump body 14, the pump body 14 is used for circulating the residual hydrogen in each reaction, two platinum catalyst layers 23 are tightly attached to the negative electrode 22 and the positive electrode 30, a proton exchange layer 24 is arranged between the two platinum catalyst layers 23, and the negative electrode 22, the positive electrode 30, the catalyst layer 23 and the proton exchange layer 24 are connected by welding and are integrally fixed in the clamping grooves a25 and the clamping groove b26 on the upper cover plate 1 and the bottom plate 7; an oxygen chamber is formed between the inner wall of the box body 2 and the positive electrode 30, an oxygen hole 28 is formed in one side of the inner wall of the box body 2 close to the positive electrode, the inner side of the peripheral side wall of the box body 2 is hollow, and a negative poisson ratio three-dimensional structure material is filled in the inner side of the box body 2, as shown in figure 5, the negative poisson ratio three-dimensional structure material is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, as shown in figure 4, the negative poisson ratio basic structure is formed by two three negative poisson ratio cells which are crossed in an angle of 90 degrees, as shown in figure 3, the 1/4 structure of the negative poisson ratio cell is composed of a first transverse edge, a first oblique edge, a second oblique edge and a first vertical edge, the side of the first transverse edge is d/2, the side length of the first oblique edge is e, the side length of the second oblique edge is f, the oblique edge of the first vertical edge is g/2, the angle formed by the first transverse edge and the first oblique edge is beta, the angle formed by the first oblique edge and the second oblique edge is theta, the second oblique side forms an angle σ with the first vertical side, wherein d is e, f, β is g, the negative poisson's ratio cell thickness t is 0.8mm, and the height h is 1 mm.
In the structure, the periphery of the upper cover plate 1 is provided with the threaded holes d19, the lower side of the upper cover plate 1 is provided with the boss which can be clamped in the box body 2, the lower side of the boss is provided with the clamping groove b26 aiming at the positions of the positive electrode and the negative electrode, and the four corners of the boss and the four corners of the upper cover plate are chamfered with round corners; two threaded holes b9 are formed in two sides of each groove 13 of the box body bottom plate 7 and used for being matched with the integrated clamping ring 3 through long bolts 15 to fix the hydrogen cylinder 4, the pump body 14 is fixed through the small clamping ring 18, a circle of threaded holes a8 are formed in the periphery of the box body bottom plate 7, and four corners of the box body bottom plate are provided with fillets which are the same as those of the upper cover plate 1; the corresponding positions of the upper surface and the lower surface of the box body 2 are provided with threaded holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7, thereby threaded holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7 can be arranged through short screws, thereby the matching of the upper cover plate 1, the box body 2 and the box body bottom plate 7 can be carried out through short bolts 12, four corners of the box body 2 are designed with fillets which are the same as the upper cover plate (1) and the box body bottom plate 7, an oxygen hole 28 is provided with a filter screen 29 for dust prevention, two hydrogen storage bottles 4 are arranged in each box body 2, the head parts of the hydrogen storage bottles 4 are provided with integrated valve ports 5, the valve ports 5 between the two hydrogen storage bottles 4 are connected through pipelines 6, the valve ports 5 of the second hydrogen storage bottle 4 are connected with the inlet of the pump body 14 through the pipelines 6, two outlets on the other side of the pump body 14 are also connected with air holes on the vertical baffle plate 21 through the pipelines 6, the valve ports 5 of the first hydrogen storage bottle 4 are also connected with the air holes 16 on the box body 2 through the pipelines 6, all places related to gas sealing are sealed by lubricating oil.
Taking the hydrogen storage bottle 4 with working pressure of 35Mpa, nominal diameter of 350mm and nominal length of 950mm as an example, the head of the hydrogen storage bottle 4 is provided with an integrated valve port 5. Two hydrogen storage bottles 4 and a pump body 14 are arranged in each box body, a valve port 5 between the two hydrogen storage bottles 4 is connected through a pipeline 6, a valve port 5 of the second hydrogen storage bottle 4 is connected with an inlet of the pump body 14 through a pipeline 6, two outlets on the other side of the pump body 14 are connected with an air hole on the vertical baffle plate 21 through a pipeline 6, and the valve port 5 of the first hydrogen storage bottle 4 is connected with an air hole 16 on the box body 2 through a pipeline 6, so that hydrogen can be supplemented to the hydrogen storage bottles 4 through the outside. The hydrogen storage bottle 4 is arranged in the groove 13 for placing the hydrogen bottle on the bottom plate of the box body, three through holes 27 are formed in each of the two integrated clamping rings 3, the small clamping ring 18 is provided with two through holes 27 for fixing the pump body 14, and the two through holes 27 are matched with the bottom plate 7 of the box body through the long bolt 15, so that the hydrogen storage bottle 4 and the pump body 14 are fixed. The gas chamber between the vertical baffle 21 and the negative electrode 22 is used for storing excessive unreacted hydrogen. The whole welded by the negative electrode 22, the positive electrode 30, the catalyst platinum 23 and the proton exchange layer 24 is fixed by the clamping grooves a and b on the bottom plate 7 and the upper cover plate 1. The upper cover plate 1, the box body 2 and the lower bottom plate 7 are matched through bolts 12, and gaskets are arranged between every two parts. An oxygen hole 28 formed in the box body 2 is used for air to enter, oxygen components in the air enter a positive electrode to react, a filter screen 29 mounted on the oxygen hole 28 is used for dust prevention and other impurities to enter the box body, the box body 2 is of a hollow structure, negative poisson ratio three-dimensional filling is arranged in the middle of the box body, the adopted negative poisson ratio three-dimensional filling is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, the negative poisson ratio basic structure is formed by three pieces of negative poisson ratio cells which are crossed in pairs at 90 degrees, and compared with parameters of the negative poisson ratio cells shown in fig. 3, the designed cells have the parameters of d, e, g, 79, beta, 68, thickness t, 0.8 and height h, 1 mm.
Example 2
As shown in fig. 1, a negative poisson's ratio material based hydrogen-oxygen fuel cell case comprises: a protection box and a battery pack; the protection box includes: the upper cover plate 1 is provided with a wire hole 20, so that wires connected to the positive and negative electrodes 22 of the battery part in the box body can be connected with the external load of the box body, and a clamping groove b26 corresponding to the positions of the positive and negative electrodes is arranged on one side of the upper cover plate 1, which is provided with the wire hole 20; as shown in fig. 2, one side of the bottom plate 7 of the box body is designed with a groove 13 for placing the hydrogen cylinder 4 and a pump groove 10 for placing the pump body 14, the other side of the bottom plate 7 of the box body is designed with a clamping groove a25 for positioning the positive and negative electrodes, a hydrogen chamber is formed between the vertical baffle 21 and the negative electrode 22 for storing unreacted hydrogen, an air hole 11 is opened on the vertical baffle 21, the air hole 11 is connected with the pump body 14, the pump body 14 is used for circulating the residual hydrogen in each reaction, two pieces of catalyst layer platinum 23 are tightly attached to the negative electrode 22 and the positive electrode 30, a proton exchange layer 24 is arranged between the two pieces of catalyst layer platinum 23, the negative electrode 22 and the positive electrode 30 and the catalyst layer 23, the catalyst layer 23 and the proton exchange layer 24 are connected by welding, and are integrally fixed in the clamping groove a25 and the clamping groove b26 on the upper cover plate 1 and the bottom plate 7; an oxygen chamber is formed between the inner wall of the box body 2 and the positive electrode 30, an oxygen hole 28 is formed in one side of the inner wall of the box body 2 close to the positive electrode, the inner side of the peripheral side wall of the box body 2 is hollow, and a negative poisson ratio three-dimensional structure material is filled in the inner side of the box body 2, as shown in figure 5, the negative poisson ratio three-dimensional structure material is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, as shown in figure 4, the negative poisson ratio basic structure is formed by two three negative poisson ratio cells which are crossed in an angle of 90 degrees, as shown in figure 3, the 1/4 structure of the negative poisson ratio cell is composed of a first transverse edge, a first oblique edge, a second oblique edge and a first vertical edge, the side of the first transverse edge is d/2, the side length of the first oblique edge is e, the side length of the second oblique edge is f, the oblique edge of the first vertical edge is g/2, the angle formed by the first transverse edge and the first oblique edge is beta, the angle formed by the first oblique edge and the second oblique edge is theta, the second oblique side forms an angle σ with the first vertical side, wherein d is e, f, β is g, the negative poisson's ratio cell thickness t is 0.8mm, and the height h is 1 mm.
In the structure, the periphery of the upper cover plate 1 is provided with the threaded holes d19, the lower side of the upper cover plate 1 is provided with the boss which can be clamped in the box body 2, the lower side of the boss is provided with the clamping groove b26 aiming at the positions of the positive electrode and the negative electrode, and the four corners of the boss and the four corners of the upper cover plate are chamfered with round corners; two threaded holes b9 are formed in two sides of each groove 13 of the box body bottom plate 7 and used for being matched with the integrated clamping ring 3 through long bolts 15 to fix the hydrogen cylinder 4, the pump body 14 is fixed through the small clamping ring 18, a circle of threaded holes a8 are formed in the periphery of the box body bottom plate 7, and four corners of the box body bottom plate are provided with fillets which are the same as those of the upper cover plate 1; the corresponding positions of the upper surface and the lower surface of the box body 2 are provided with threaded holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7, thereby threaded holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7 can be arranged through short screws, thereby the matching of the upper cover plate 1, the box body 2 and the box body bottom plate 7 can be carried out through short bolts 12, four corners of the box body 2 are designed with fillets which are the same as the upper cover plate (1) and the box body bottom plate 7, an oxygen hole 28 is provided with a filter screen 29 for dust prevention, two hydrogen storage bottles 4 are arranged in each box body 2, the head parts of the hydrogen storage bottles 4 are provided with integrated valve ports 5, the valve ports 5 between the two hydrogen storage bottles 4 are connected through pipelines 6, the valve ports 5 of the second hydrogen storage bottle 4 are connected with the inlet of the pump body 14 through the pipelines 6, two outlets on the other side of the pump body 14 are also connected with air holes on the vertical baffle plate 21 through the pipelines 6, the valve ports 5 of the first hydrogen storage bottle 4 are also connected with the air holes 16 on the box body 2 through the pipelines 6, all places related to gas sealing are sealed by lubricating oil.
Taking the hydrogen storage bottle 4 with working pressure of 35Mpa, nominal diameter of 350mm and nominal length of 950mm as an example, the head of the hydrogen storage bottle 4 is provided with an integrated valve port 5. Two hydrogen storage bottles 4 and a pump body 14 are arranged in each box body, a valve port 5 between the two hydrogen storage bottles 4 is connected through a pipeline 6, a valve port 5 of the second hydrogen storage bottle 4 is connected with an inlet of the pump body 14 through a pipeline 6, two outlets on the other side of the pump body 14 are connected with an air hole on the vertical baffle plate 21 through a pipeline 6, and the valve port 5 of the first hydrogen storage bottle 4 is connected with an air hole 16 on the box body 2 through a pipeline 6, so that hydrogen can be supplemented to the hydrogen storage bottles 4 through the outside. The hydrogen storage bottle 4 is arranged in the groove 13 for placing the hydrogen bottle on the bottom plate of the box body, three through holes 27 are formed in each of the two integrated clamping rings 3, the small clamping ring 18 is provided with two through holes 27 for fixing the pump body 14, and the two through holes 27 are matched with the bottom plate 7 of the box body through the long bolt 15, so that the hydrogen storage bottle 4 and the pump body 14 are fixed. The gas chamber between the vertical baffle 21 and the negative electrode 22 is used for storing excessive unreacted hydrogen. The whole welded by the negative electrode 22, the positive electrode 30, the catalyst platinum 23 and the proton exchange layer 24 is fixed by the clamping grooves a and b on the bottom plate 7 and the upper cover plate 1. The upper cover plate 1, the box body 2 and the lower bottom plate 7 are matched through bolts 12, and gaskets are arranged between every two parts. An oxygen hole 28 formed in the box body 2 is used for air to enter, oxygen components in the air enter the positive electrode to react, a filter screen 29 installed on the oxygen hole 28 is used for dust prevention and other impurities to enter the box body, the box body 2 is of a hollow structure, negative poisson ratio three-dimensional filling is arranged in the middle, the adopted negative poisson ratio three-dimensional filling is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, the negative poisson ratio basic structure is formed by three pieces of negative poisson ratio cells which are crossed in pairs at 90 degrees, and compared with parameters of the negative poisson ratio cells shown in fig. 3, the parameters of the designed cells are d, e, g, β, θ, t, 0.8mm, and h, 1 mm.
Example 3
As shown in fig. 1, a negative poisson's ratio material based hydrogen-oxygen fuel cell case comprises: a protection box and a battery pack; the protection box includes: the upper cover plate 1 is provided with a wire hole 20, so that wires connected to the positive and negative electrodes 22 of the battery part in the box body can be connected with the external load of the box body, and a clamping groove b26 corresponding to the positions of the positive and negative electrodes is arranged on one side of the upper cover plate 1, which is provided with the wire hole 20; as shown in fig. 2, a groove 13 for placing the hydrogen cylinder 4 and a pump groove 10 for placing the pump body 14 are designed on one side of the bottom plate 7 of the case, a clamping groove a25 for aligning and positioning the negative and positive electrodes is designed on the other side of the bottom plate 7 of the case, a hydrogen chamber is formed between the vertical baffle 21 and the negative electrode 22 for storing unreacted hydrogen, an air hole 11 is formed on the vertical baffle 21, the air hole 11 is connected with the pump body 14, the pump body 14 is used for circulating the residual hydrogen in each reaction, two platinum catalyst layers 23 are tightly attached between the negative electrode 22 and the platinum catalyst layers 23 of the positive electrode 30 to form a proton exchange layer 24, and the negative electrode 22, the positive electrode 30, the catalyst layers 23 and the proton exchange layer 24 are connected by welding and are integrally fixed in the clamping grooves a25 and the clamping grooves b26 on the upper cover plate 1 and the bottom plate 7; an oxygen chamber is formed between the inner wall of the box body 2 and the positive electrode 30, an oxygen hole 28 is formed in one side of the inner wall of the box body 2 close to the positive electrode, the inner side of the peripheral side wall of the box body 2 is hollow, and a negative poisson ratio three-dimensional structure material is filled in the inner side of the box body 2, as shown in figure 5, the negative poisson ratio three-dimensional structure material is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, as shown in figure 4, the negative poisson ratio basic structure is formed by two three negative poisson ratio cells which are crossed in an angle of 90 degrees, as shown in figure 3, the 1/4 structure of the negative poisson ratio cell is composed of a first transverse edge, a first oblique edge, a second oblique edge and a first vertical edge, the side of the first transverse edge is d/2, the side length of the first oblique edge is e, the side length of the second oblique edge is f, the oblique edge of the first vertical edge is g/2, the angle formed by the first transverse edge and the first oblique edge is beta, the angle formed by the first oblique edge and the second oblique edge is theta, the second oblique side forms an angle σ with the first vertical side, wherein d is e, f, β is g, the negative poisson's ratio cell thickness t is 0.8mm, and the height h is 1 mm.
In the structure, the periphery of the upper cover plate 1 is provided with the threaded holes d19, the lower side of the upper cover plate 1 is provided with the boss which can be clamped in the box body 2, the lower side of the boss is provided with the clamping groove b26 aiming at the positions of the positive electrode and the negative electrode, and the four corners of the boss and the four corners of the upper cover plate are chamfered with round corners; two threaded holes b9 are formed in two sides of each groove 13 of the box body bottom plate 7 and used for being matched with the integrated clamping ring 3 through long bolts 15 to fix the hydrogen cylinder 4, the pump body 14 is fixed through the small clamping ring 18, a circle of threaded holes a8 are formed in the periphery of the box body bottom plate 7, and four corners of the box body bottom plate are provided with fillets which are the same as those of the upper cover plate 1; the corresponding positions of the upper surface and the lower surface of the box body 2 are provided with threaded holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7, thereby threaded holes c17 corresponding to the upper cover plate 1 and the box body bottom plate 7 can be arranged through short screws, thereby the matching of the upper cover plate 1, the box body 2 and the box body bottom plate 7 can be carried out through short bolts 12, four corners of the box body 2 are designed with fillets which are the same as the upper cover plate (1) and the box body bottom plate 7, an oxygen hole 28 is provided with a filter screen 29 for dust prevention, two hydrogen storage bottles 4 are arranged in each box body 2, the head parts of the hydrogen storage bottles 4 are provided with integrated valve ports 5, the valve ports 5 between the two hydrogen storage bottles 4 are connected through pipelines 6, the valve ports 5 of the second hydrogen storage bottle 4 are connected with the inlet of the pump body 14 through the pipelines 6, two outlets on the other side of the pump body 14 are also connected with air holes on the vertical baffle plate 21 through the pipelines 6, the valve ports 5 of the first hydrogen storage bottle 4 are also connected with the air holes 16 on the box body 2 through the pipelines 6, all places related to gas sealing are sealed by lubricating oil.
Taking the hydrogen storage bottle 4 with working pressure of 35Mpa, nominal diameter of 350mm and nominal length of 950mm as an example, the head of the hydrogen storage bottle 4 is provided with an integrated valve port 5. Two hydrogen storage bottles 4 and a pump body 14 are arranged in each box body, a valve port 5 between the two hydrogen storage bottles 4 is connected through a pipeline 6, a valve port 5 of the second hydrogen storage bottle 4 is connected with an inlet of the pump body 14 through the pipeline 6, two outlets on the other side of the pump body 14 are connected with an air hole on the vertical baffle 21 through the pipeline 6, the valve port 5 of the first hydrogen storage bottle 4 is connected with an air hole 16 on the box body 2 through the pipeline 6, and therefore hydrogen can be supplemented to the hydrogen storage bottles 4 through the outside. The hydrogen storage bottle 4 is arranged in the groove 13 for placing the hydrogen bottle on the bottom plate of the box body, three through holes 27 are formed in each of the two integrated clamping rings 3, the small clamping ring 18 is provided with two through holes 27 for fixing the pump body 14, and the two through holes 27 are matched with the bottom plate 7 of the box body through the long bolt 15, so that the hydrogen storage bottle 4 and the pump body 14 are fixed. The gas chamber between the vertical baffle 21 and the negative electrode 22 is used for storing excessive unreacted hydrogen. The whole welded by the negative electrode 22, the positive electrode 30, the catalyst platinum 23 and the proton exchange layer 24 is fixed by the clamping grooves a and b on the bottom plate 7 and the upper cover plate 1. The upper cover plate 1, the box body 2 and the lower bottom plate 7 are matched through bolts 12, and gaskets are arranged between every two parts. An oxygen hole 28 formed in the box body 2 is used for air to enter, oxygen components in the air enter a positive electrode to react, a filter screen 29 mounted on the oxygen hole 28 is used for dust prevention and other impurities to enter the box body, the box body 2 is of a hollow structure, negative poisson ratio three-dimensional filling is arranged in the middle of the box body, the adopted negative poisson ratio three-dimensional filling is formed by a negative poisson ratio basic structure through a transverse and longitudinal array, the negative poisson ratio basic structure is formed by three pieces of negative poisson ratio cells which are crossed in pairs at 90 degrees, and compared with parameters of the negative poisson ratio cells shown in fig. 3, each parameter of the designed cells is d, e, g, 79, theta, 0.8mm and h, 1 mm.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A negative poisson's ratio material based hydrogen-oxygen fuel cell case, comprising: a protection box and a battery pack; the protection box includes: the battery box comprises an upper cover plate (1), a box body (2) and a box body bottom plate (7), wherein the upper cover plate (1) is provided with a wire hole (20), so that wires connected to a battery positive electrode (30) and a battery negative electrode (22) of a battery part in the box body can be connected with a load outside the box body, and one side of the upper cover plate (1) provided with the wire hole (20) is provided with a clamping groove b (26) aiming at the positions of an electrode which is aligned with the electrode and a negative electrode; one side of a box body bottom plate (7) is provided with a groove (13) for placing a hydrogen cylinder (4) and a pump groove (10) for placing a pump body (14), the other side of the box body bottom plate (7) is provided with a clamping groove a (25) aiming at the positions of an anode and a cathode, a hydrogen chamber is formed between a vertical baffle plate (21) and the cathode (22) and used for storing unreacted hydrogen, the vertical baffle plate (21) is provided with an air hole (11), the air hole (11) is connected with the pump body (14), the pump body (14) is used for circulating the residual hydrogen after each reaction, two catalyst layer platinum (23) are tightly attached to the cathode (22) and the anode (30), a proton exchange layer (24) is arranged between the two catalyst layer platinum (23), the cathode (22), the anode (30) and the catalyst layer platinum (23) are all connected with the catalyst layer platinum (23), the catalyst layer platinum (23) and the proton exchange layer (24) by welding, the clamping grooves a (25) and b (26) are integrally fixed on the upper cover plate (1) and the bottom plate (7); an oxygen chamber is formed between the inner wall of the box body (2) and the positive electrode (30), one side of the inner wall of the box body (2) close to the positive electrode is provided with oxygen holes (28), the inner part of the peripheral side wall of the box body (2) is in a hollow design, negative Poisson ratio three-dimensional structural material is filled in the box body, the negative Poisson ratio three-dimensional structural material is formed by a negative Poisson ratio basic structure through a transverse and longitudinal array, the negative Poisson ratio basic structure is formed by two three negative Poisson ratio cells which are crossed in 90 degrees, the 1/4 structure of the negative Poisson ratio cells is composed of a first transverse edge, a first inclined edge, a second inclined edge and a first vertical edge, the side length of the first transverse edge is d/2, the side length of the first inclined edge is e, the side length of the second inclined edge is f, the side length of the first vertical edge is g/2, the angle formed by the first transverse edge and the first inclined edge is beta, and the angle formed by the first inclined edge and the second inclined edge is theta, the second oblique side forms an angle σ with the first vertical side, where d = e = f = g, β = σ, negative poisson's ratio cell thickness t =0.8mm, height h =1 mm.
2. The hydrogen-oxygen fuel cell box based on the negative Poisson ratio material as claimed in claim 1, wherein the underside of the upper cover plate (1) is designed with a boss which can be clamped in the box body (2), and the underside of the boss is designed with a clamping groove b (26) aiming at the positions of the positive and negative electrodes.
3. The negative poisson's ratio material-based hydrogen-oxygen fuel cell case of claim 2, wherein four corners of the boss and four corners of the upper cover plate (1) are rounded.
4. The hydrogen-oxygen fuel cell box based on the negative Poisson ratio material as claimed in claim 1, wherein two threaded holes b (9) are formed on two sides of each groove (13) of the box bottom plate (7) and used for matching with the integrated clamping ring (3) through long bolts (15) to fix the hydrogen cylinders (4), and the pump body (14) is fixed through a small clamping ring (18).
5. The negative poisson's ratio material-based hydrogen-oxygen fuel cell tank as claimed in claim 3, characterized in that four corners of the tank body (2) and four corners of the tank body bottom plate (7) are designed with rounded corners as same as the upper cover plate (1).
6. The hydrogen-oxygen fuel cell box based on the negative Poisson ratio material as claimed in claim 1, wherein threaded holes d (19) are formed around the upper cover plate (1) and the box bottom plate (7), threaded holes c (17) corresponding to the upper cover plate (1) and the box bottom plate (7) are formed in corresponding positions of the upper surface and the lower surface of the box body (2), and the upper cover plate (1), the box body (2) and the box bottom plate (7) are fixedly connected through the threaded holes by short bolts (12).
7. The negative poisson's ratio material based hydrogen-oxygen fuel cell tank as claimed in claim 1, wherein a screen (29) is mounted on the oxygen holes (28).
8. The hydrogen-oxygen fuel cell box based on the negative Poisson ratio material as claimed in claim 1, wherein each box body (2) is internally provided with two hydrogen storage bottles (4), the heads of the hydrogen storage bottles (4) are provided with integrated valve ports (5), the valve ports (5) between the two hydrogen storage bottles (4) are connected through pipelines (6), the valve port (5) of the second hydrogen storage bottle (4) is connected with one side of the inlet of the pump body (14) through the pipeline (6), two outlets on the other side of the pump body (14) are connected with the air hole on the vertical baffle plate (21) through the pipeline (6), and the valve port (5) of the first hydrogen storage bottle (4) is connected with the air hole (16) on the box body (2) through the pipeline (6).
CN201910802196.9A 2019-08-28 2019-08-28 Hydrogen-oxygen fuel cell box based on negative Poisson ratio material Expired - Fee Related CN110581297B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910802196.9A CN110581297B (en) 2019-08-28 2019-08-28 Hydrogen-oxygen fuel cell box based on negative Poisson ratio material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910802196.9A CN110581297B (en) 2019-08-28 2019-08-28 Hydrogen-oxygen fuel cell box based on negative Poisson ratio material

Publications (2)

Publication Number Publication Date
CN110581297A CN110581297A (en) 2019-12-17
CN110581297B true CN110581297B (en) 2022-05-10

Family

ID=68811981

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910802196.9A Expired - Fee Related CN110581297B (en) 2019-08-28 2019-08-28 Hydrogen-oxygen fuel cell box based on negative Poisson ratio material

Country Status (1)

Country Link
CN (1) CN110581297B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112012983B (en) * 2020-09-12 2022-08-30 长沙理工大学 Negative Poisson ratio flexible buffering hydraulic cylinder
US11771183B2 (en) 2021-12-16 2023-10-03 Joon Bu Park Negative Poisson's ratio materials for fasteners

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201689586U (en) * 2010-05-06 2010-12-29 教育部教学仪器研究所 Tester for hydrogen fuel cell
CN202632592U (en) * 2012-03-11 2012-12-26 陈锦华 Test teaching aid of proton exchange membrane oxyhydrogen fuel cell
CN108417862A (en) * 2018-01-03 2018-08-17 南京工业大学 Self-hydrogen-storage proton exchange membrane fuel cell unit, cell assembly and operation method
CN207800765U (en) * 2018-01-03 2018-08-31 南京工业大学 Self-hydrogen-storage proton exchange membrane fuel cell unit and cell assembly
CN108963293A (en) * 2018-07-09 2018-12-07 上海轩玳科技有限公司 A kind of proton exchanging film fuel cell unit and fuel cell pack and packaging technology and control method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201689586U (en) * 2010-05-06 2010-12-29 教育部教学仪器研究所 Tester for hydrogen fuel cell
CN202632592U (en) * 2012-03-11 2012-12-26 陈锦华 Test teaching aid of proton exchange membrane oxyhydrogen fuel cell
CN108417862A (en) * 2018-01-03 2018-08-17 南京工业大学 Self-hydrogen-storage proton exchange membrane fuel cell unit, cell assembly and operation method
CN207800765U (en) * 2018-01-03 2018-08-31 南京工业大学 Self-hydrogen-storage proton exchange membrane fuel cell unit and cell assembly
CN108963293A (en) * 2018-07-09 2018-12-07 上海轩玳科技有限公司 A kind of proton exchanging film fuel cell unit and fuel cell pack and packaging technology and control method

Also Published As

Publication number Publication date
CN110581297A (en) 2019-12-17

Similar Documents

Publication Publication Date Title
CN110581297B (en) Hydrogen-oxygen fuel cell box based on negative Poisson ratio material
CN216085104U (en) Battery cell, battery and power consumption device
CN211507809U (en) Lithium ion battery, battery module and battery pack
EP4447220A1 (en) End cap assembly, battery cell, battery, and electric device
CN110350229B (en) Modularized solid oxide fuel cell stack
CN109869625B (en) High-efficient convenient low pressure metal hydride hydrogen storage device
WO2023060519A1 (en) Accommodation device, battery, electric device, and device and method for manufacturing battery
CN106410251A (en) Removable plate-shaped battery series battery pack structure
CN217788756U (en) End cover assembly, battery monomer, battery and power consumption device
US20240347826A1 (en) Shell, battery cell, battery and electricity consuming device
CN110649307B (en) Hydrogen-oxygen fuel cell box based on mixed Poisson's ratio material
CN211125711U (en) Oxyhydrogen fuel cell box based on variable thickness gradient zero Poisson ratio material
CN117529849A (en) Battery end cover assembly, battery monomer, battery and electric equipment
CN110581242A (en) Oxyhydrogen fuel cell box based on variable thickness gradient zero Poisson ratio material
US20240097272A1 (en) Gas-exhausting apparatus, battery cell, battery and electricity-consuming apparatus
CN110649192B (en) Hydrogen-oxygen fuel cell box based on zero Poisson ratio material
CN217405616U (en) Square aluminum shell battery cell, battery and electric vehicle
CN215989138U (en) Box body assembly, battery and power utilization device
CN105958099B (en) A kind of air cell
CN215299377U (en) High-power discharge lithium battery assembly
CN205645998U (en) Air battery
KR100519414B1 (en) Molten carbonate fuel cell with simplified central distribution separator
JP2012178302A (en) Fuel cell stack
CN215451482U (en) Modularized fuel cell stack
CN217062201U (en) Fuel cell stack shell structure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20220510

CF01 Termination of patent right due to non-payment of annual fee