Methanol fuel tank for fuel cell

Abstract

The invention provides a methanol fuel tank for a fuel cell, the methanol fuel tank comprises a fuel tank main body and a fuel tank upper cover, an EPTFE membrane, a membrane sealing ring, a miniature PP5 one-way valve core, a valve core fixing seat and a silica gel liquid inlet pipe are sequentially integrated in the fuel tank main body; the fuel tank upper cover is composed of an upper cover screwing seat, a liquid inlet communicating vessel and a liquid inlet sealing ring. According to the methanol fuel tank, the risk of methanol leakage in the fuel tank can be effectively reduced, and methanol cannot be leaked out of the fuel tank under the condition that no pressure difference exists between the position of the liquid inlet communicating vessel and the outside, so that the use performance of a methanol fuel cell power supply is improved; and meanwhile, the methanol fuel tank can be used at 360 degrees by utilizing the universal silica gel liquid inlet pipe, so that the use directivity of the methanol fuel cell is improved. According to the design, the safety, the environmental protection property and the stability of the direct methanol fuel cell are improved, the use performance and the flexibility of the direct methanol fuel cell are also remarkably improved, and powerful support is provided for popularization and application of a methanol fuel cell technology.

Description

Technical Field

[0001] The invention relates to the technical field of micro direct methanol fuel cells, in particular to a methanol fuel tank for a fuel cell. Background Art

[0002] Methanol fuel tanks are storage tanks for methanol fuel in direct methanol fuel cell power sources, and need to be easy to operate, easy to install, and free of leakage risks. At present, there are no corresponding methanol fuel storage tank technology products for domestic direct methanol fuel cell power sources, which cannot meet the application needs of users, resulting in slow development of direct methanol fuel cell technology and market. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a methanol fuel tank for a fuel cell.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A methanol fuel tank for a fuel cell comprises a fuel tank body 1 and a fuel tank upper cover 2, wherein the fuel tank body 1 is sequentially integrated with an EPTFE film 1-1, a film sealing ring 1-2, a micro PP5 one-way valve core 1-3, a valve core fixing seat 1-4 and a silicone liquid inlet pipe; the fuel tank upper cover 2 is composed of an upper cover tightening seat 2-1, a liquid inlet connector 2-2 and a liquid inlet sealing ring 2-3, the upper cover tightening seat 2-1 is threadedly connected to the fuel tank body 1, the liquid inlet connector 2-2 is fixedly connected to the upper cover tightening seat 2-1, the liquid inlet connector 2-2 is connected to the silicone liquid inlet pipe via the micro PP5 one-way valve core 1-3, and the liquid inlet sealing ring 2-3 is fixed at the junction of the end of the liquid inlet connector 2-2 and the micro PP5 one-way valve core 1-3.

[0006] Preferably, in the above-mentioned methanol fuel tank, the silicone liquid inlet pipe is a universal silicone liquid inlet pipe 1-5.

[0007] Preferably, in the above-mentioned methanol fuel tank, the EPTFE membrane 1-1 and the membrane sealing ring 1-2 are sequentially connected to the top of the fuel tank body 1 by screwing, so as to balance the pressure inside the fuel tank body; the miniature PP5 one-way valve core 1-3, the valve core fixing seat 1-4, and the universal silicone liquid inlet pipe 1-5 are sequentially connected to the inside of the fuel tank body 1 by snap-fitting, so as to serve as an internal methanol fuel discharge channel.

[0008] Preferably, in the above-mentioned methanol fuel tank, the upper cover screw-on seat 2-1 and the liquid inlet sealing ring 2-3 are connected to the liquid inlet connector 2-2 by snap-fitting to form the fuel tank upper cover 2.

[0009] Preferably, in the above-mentioned methanol fuel tank, the liquid inlet connector 2 - 2 is provided with an anti-leakage structure, and the anti-leakage structure is composed of a valve flap and a valve body, and the valve flap is fixedly connected to the valve body.

[0010] Beneficial effects:

[0011] The methanol fuel tank, the EPTFE membrane has excellent chemical stability and air permeability, can effectively prevent direct methanol leakage while allowing internal gas exchange, the membrane sealing ring is set close to the EPTFE membrane to ensure the sealing between the membrane and the tank body, the miniature PP5 one-way valve core is exquisitely designed to allow methanol to flow in one way from the outside to prevent internal liquid backflow or leakage, the silicone inlet pipe is made of high-elastic silicone material, can be freely bent and fixed at any desired angle, to achieve 360-degree dead-angle liquid inlet, the liquid inlet connecting vessel is designed with an anti-leakage structure, and its valve flap is opened or closed under the action of fluid pressure. When there is no external pressure difference, the valve flap is in a closed state to prevent methanol leakage.

[0012] The methanol fuel tank can effectively reduce the risk of methanol leakage inside the fuel tank. When there is no pressure difference between the position of the liquid inlet connector and the outside world, methanol will not leak out of the fuel tank, thereby improving the performance of the methanol fuel cell power supply. At the same time, the methanol fuel tank can be used at a 360-degree angle by using a universal silicone liquid inlet pipe, thereby improving the directionality of the use of the methanol fuel cell. This design not only improves the safety, environmental protection and stability of the direct methanol fuel cell, but also significantly improves its performance and flexibility, providing strong support for the promotion and application of methanol fuel cell technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the methanol fuel tank of the present invention.

[0014] Figure 2 This is a schematic diagram of the disassembly of the components of the methanol fuel tank of the present invention.

[0015] In the figure: 1- fuel tank body 2- fuel tank cover 1-1- EPTFE membrane 1-2- membrane sealing ring

[0016] 1-3-Micro PP5 one-way valve core 1-4-Valve core fixing seat 1-5-Universal silicone liquid inlet pipe

[0017] 2-1-Upper cover screw seat 2-2-Liquid inlet connector 2-3-Liquid inlet sealing ring DETAILED DESCRIPTION

[0018] The methanol fuel tank of the present invention is described in detail below with reference to the embodiments and drawings.

[0019] Example 1

[0020] like Figure 1-2As shown, the methanol fuel tank comprises a fuel tank body 1 and a fuel tank upper cover 2, wherein the fuel tank body 1 is sequentially integrated with an EPTFE membrane 1-1, a membrane sealing ring 1-2, a micro PP5 one-way valve core 1-3, a valve core fixing seat 1-4 and a universal silicone liquid inlet pipe 1-5, the EPTFE membrane 1-1 and the membrane sealing ring 1-2 are sequentially connected to the top of the fuel tank body 1 by tightening, so as to balance the pressure in the fuel tank body; the micro PP5 one-way valve core 1-3, the valve core fixing seat 1-4 and the universal silicone liquid inlet pipe 1-5 are sequentially connected to the inside of the fuel tank body 1 by snap-fitting, so as to serve as an internal methanol fuel discharge channel; the fuel tank upper cover 2 is composed of an upper cover tightening seat 2-1, a liquid inlet connector 2-2 and a liquid inlet sealing ring 2- 3, the upper cover screw-on seat 2-1 and the liquid inlet sealing ring 2-3 are connected to the liquid inlet communicating vessel 2-2 by a clamping method to form the fuel tank upper cover 2, the upper cover screw-on seat 2-1 is threadedly connected to the fuel tank body 1, the liquid inlet communicating vessel 2-2 is connected with the universal silicone liquid inlet pipe 1-5 through the micro PP5 one-way valve core 1-3, so as to ensure that methanol can smoothly enter the tank, the liquid inlet sealing ring 2-3 is fixed at the junction of the end of the liquid inlet communicating vessel 2-2 and the micro PP5 one-way valve core 1-3, the liquid inlet communicating vessel 2-2 is provided with an anti-leakage structure, the anti-leakage structure is composed of a valve flap and a valve body, the valve flap is clamped and fixed to the valve body, the valve flap is opened or closed under the action of fluid pressure, and when there is no external pressure difference, the valve flap is in a closed state to prevent methanol from leaking.

[0021] The above-mentioned methanol fuel tank, after the fuel tank body 1 and the fuel tank cover 2 are connected, the methanol inside the methanol fuel tank can be discharged. The fuel tank body 1 is provided with an EPTFE membrane 1-1, which can prevent the leakage of fuel methanol, and at the same time, air can enter the methanol fuel tank, effectively balancing the pressure inside and outside the tank. The fuel tank body 1 is provided with a micro PP5 one-way valve core 1-3. When there is a certain pressure difference on both sides of the one-way valve core, the one-way valve will form a one-way conduction, effectively preventing accidental leakage of methanol fuel. The fuel tank body 1 is provided with a universal silicone liquid inlet pipe 1-5, which can support the methanol fuel tank at any angle and still effectively discharge the internal methanol. The fuel tank cover 2 is provided with a liquid inlet connector 2-2, through which the methanol liquid can be discharged. The fuel tank cover 2 is provided with a cover screwing seat 2-1, which can fasten the fuel tank cover and the fuel tank body by threaded connection.

[0022] During use, when the fuel tank cover is installed on the fuel tank body, an external methanol micro pump provides a pressure difference between the liquid inlet connector and the outside world, and the methanol fuel is pushed from the fuel tank body to the liquid inlet connector, and then pushed into the methanol fuel cell power supply for use by the fuel cell power supply.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. The improvements and modifications such as structural modifications made by technicians in this technical field based on this are deemed to be within the scope of protection of the present invention.

Claims

1. A methanol fuel tank for a fuel cell, characterized in that: The invention comprises a fuel tank body (1) and a fuel tank upper cover (2), wherein the fuel tank body (1) is sequentially integrated with an EPTFE film (1-1), a film sealing ring (1-2), a micro PP5 one-way valve core (1-3), a valve core fixing seat (1-4) and a silicone liquid inlet pipe; the fuel tank upper cover (2) is composed of an upper cover tightening seat (2-1), a liquid inlet connector (2-2) and a liquid inlet sealing ring (2-3); the upper cover tightening seat (2-1) is threadedly connected to the fuel tank body (1); the liquid inlet connector (2-2) is fixedly connected to the upper cover tightening seat (2-1); the liquid inlet connector (2-2) is connected to the silicone liquid inlet pipe via the micro PP5 one-way valve core (1-3); and the liquid inlet sealing ring (2-3) is fixed at the junction of the end of the liquid inlet connector (2-2) and the micro PP5 one-way valve core (1-3).

2. The methanol fuel tank according to claim 1, characterized in that: The silicone liquid inlet pipe is a universal silicone liquid inlet pipe (1-5).

3. The methanol fuel tank according to claim 1, characterized in that: The EPTFE film (1-1) and the film sealing ring (1-2) are connected to the top of the fuel tank body (1) in sequence by screwing; the micro PP5 one-way valve core (1-3), the valve core fixing seat (1-4), and the universal silicone liquid inlet pipe (1-5) are connected to the inside of the fuel tank body (1) in sequence by snap-fitting.

4. The methanol fuel tank according to claim 1, characterized in that: The upper cover screwing seat (2-1) and the liquid inlet sealing ring (2-3) are connected to the liquid inlet connector (2-2) by means of a snap connection to form the fuel tank upper cover (2).

5. The methanol fuel tank according to claim 1, characterized in that: The liquid inlet communicating vessel (2-2) is provided with an anti-leakage structure, which is composed of a valve flap and a valve body, and the valve flap is fixedly connected with the valve body.

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