阅读说明：本技术 一种基于负泊松比材料的氢氧燃料电池箱 (Hydrogen-oxygen fuel cell box based on negative Poisson ratio material ) 是由 周冠 闫鹏飞 赵万忠 王源隆 于 2019-08-28 设计创作，主要内容包括：本发明公开了一种基于负泊松比材料的氢氧燃料电池箱,属于新能源汽车领域,将氢氧燃料电池的整体结构放入一个含有负泊松比填充的箱体外壳中,从而减轻了氢气瓶以及电池反应部分在汽车遇到剧烈碰撞时对其造成的损害,提高了氢氧燃料电池整体的安全性,保障了汽车的稳定行驶。本发明包括：保护箱和电池组；所述保护箱包括：上盖板、箱体以及箱体底板,电池整体放置于箱体内,箱体内部填充负泊松比三维结构材料,所述负泊松比三维结构材料由负泊松比基本结构通过横向和纵向的阵列而成,负泊松比基本结构由三片负泊松比元胞两两呈90°交叉而成。(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.)

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 positive and negative electrodes (22) of a battery part in the box body can be connected with a load outside the box body, and a clamping groove b (26) aiming at the positions of the positive and negative electrodes is arranged on one side of the upper cover plate (1) where the wire hole (20) is arranged; one side of a box body bottom plate (7) is provided with a groove (13) for placing a hydrogen bottle (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 circularly reacting the residual hydrogen each time, two catalyst layers platinum (23) are tightly attached to the cathode (22) and an anode (30), a proton exchange layer (24) and the cathode (22) are arranged between the two catalyst layers platinum (23, the positive electrode (30) is connected with the catalyst layer (23), the catalyst layer (23) and the proton exchange layer (24) through welding and integrally fixed in the clamping grooves a (25) and b (26) 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, 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) for 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 case as claimed in claim 1 or 3, wherein four corners of the case body (2) and four corners of the case 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's ratio material as claimed in claim 1, wherein there are two hydrogen storage bottles (4) in each box body 2, the heads of the hydrogen storage bottles (4) have integrated valve ports (5), the valve ports (5) between the two hydrogen storage bottles (4) are connected through a pipeline (6), the valve port (5) of the second hydrogen storage bottle (4) is connected with the inlet of the pump body (14) through a pipeline (6), the two outlets on the other side of the pump body (14) are connected with the 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 the air hole (16) on the box body (2) through a pipeline (6).

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 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 cylinder 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 aiming at 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; 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, 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.

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.

Detailed Description

The invention is described in detail below with reference to the following figures and specific examples: