CN203179959U - Self-insulation packaging housing for fuel cell stack of standby power supply of base station - Google Patents

Abstract

The utility model discloses a self-insulation packaging housing for a fuel cell stack of a standby power supply of a base station. The self-insulation packaging housing comprises left and right half dual-layer plate structure housings, wherein heating wire layers are built in the housings; heat insulation layers are clung to the heating wire layers to form the inner walls of the housings; sealing strips are pasted at the packaging connection parts of the left and right half dual-layer plate structure housings; and the left and right half dual-layer plate structure housings are fixedly mounted on the fuel cell stack by nuts. The self-insulation packaging housing can be used for effectively keeping the ambient temperature of the fuel cell stack, so that low-temperature cold start of a fuel cell is facilitated.

Description

A kind of self-heat conserving package casing for base station stand-by power supply fuel cell pile

Affiliated technical field

The utility model relates to a proton exchanging film fuel battery package casing, relates in particular to a kind of self-heat conserving package casing for base station stand-by power supply fuel cell pile.

Background technology

Fuel cell is by electrocatalytic reaction the chemical energy of Oxidizing and Reducing Agents to be directly changed into the device of electric energy, is a kind of efficient, safety, cleaning, new-generation technology flexibly.Proton Exchange Membrane Fuel Cells wherein is because it has the efficient height, energy density is big, reaction temperature is low, noiselessness, remarkable advantage such as pollution-free are with a wide range of applications at aspects such as terrestrial power generation station, electric motor car and compact powers.Fuel battery inside mainly is made up of proton exchange membrane, electro chemical catalyst, diffusion layer and bipolar plates.When operation of fuel cells, it is inner, and following course of reaction takes place: reacting gas spreads in diffusion layer, when reacting gas arrives Catalytic Layer, is adsorbed by catalyst in Catalytic Layer and electrocatalytic reaction takes place; The proton that anode reaction generates is by being delivered to cathode side in the proton exchange membrane, electronics arrives negative electrode through external circuit, with oxygen molecule reaction bonded Cheng Shui, emits heat simultaneously.Electrode reaction is:

Anode (negative pole): H ₂→ 2H ⁺+ 2e

Negative electrode (positive pole): 1/2O ₂+ 2H ⁺+ 2e → H ₂O

Cell reaction: H ₂+ 1/2O ₂→ H ₂O

In the typical Proton Exchange Membrane Fuel Cells, membrane electrode is placed in the middle of the guide plate of two conductions, and two bafflers are respectively the baffler of anode fuel and the baffler of cathode oxidant.A fuel cell of Xing Chenging is called monocell like this, in order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, a plurality of monocells need be connected into battery pack by straight folded mode, is fuel cell pile again.In fuel cell pile, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode again, and this pole plate is called bipolar plates.Pile tightens together by front end-plate, end plate and pull bar.

When fuel cell generation is used as fuel battery engines, environment for use is on every side required than higher, fuel cell in the course of the work, especially at outdoor work environment, have a large amount of dusts or water erosion pile, in a single day these dusts or water enter pile, then will cause the pile electric leakage, leak hydrogen, even make pile suffer fatefulue destruction, under the automobile environment for use, vibrations also can cause great influence to pile itself in addition.Fuel cell pack need carry out the integrated encapsulation of modularization for this reason, reaches as a kind of water proof and dust proof that meets the integrated design of specific occasion purposes, antidetonation, insulation, heat insulation, hydrogen leak protection and product requirement attractive in appearance.

And fuel cell generation is when being used for the base station stand-by power supply, owing to may be applied to outdoor, when the cold temperature of weather is low, need guarantee the normal startup of fuel cell, a kind of have the fuel cell package shell of self-heat conserving function can not only play conventional effects such as water proof and dust proof, can also simplify fuel cell low-temperature cool starting technology, reduce the fuel cell system complexity, reduce cost, reduce the fault occurrence probability.

The patent No. is that the utility model patent of 99219220.X is mentioned existing two kinds of fuel cell press-fit approach---in wear bolt press-fit approach and external bolt press-fit approach, there is obvious defects in these two kinds of press-fit approach, press-fit owing to the effective electrochemistry area that needs to have reduced in baffler, carbon paper and film punching material as the interior bolt of wearing, the volume of battery specific power is reduced, and external bolt press-fit and cause that easily monocell is subjected to displacement in the vertical direction that press-fits bolt.Designed a kind of shell of overall package at above-mentioned two kinds of fuel cell press-fit approach shortcomings, increased stability of structure, can under various strong motions, shock environment, work.But do not consider water proof and dust proof and the electric insulation design of package casing.

The patent No. is that 200520047310.5 utility model patent is at general fuel cell pile power generating system zero parts underintegration, too assorted, too many, lacking hommization considers, directly will remove point socket, console switch, green indicating lamps etc. directly design on housing, hommization, commercialization, portable design.The direct sealing label of air strainer plays certain heat radiation in the side plate inboard, the water proof and dust proof effect.But ignored the electric insulation problem of pile package casing, and do not considered the anti-seismic problem under the automobile-used situation.

Be that 201020168188.8 utility model patent has reached " all particular requirements such as the water proof and dust proof of integrated design, antidetonation, insulation, heat insulation, hydrogen leak protection " though the patent No. is 201010153563.6 utility model patent and the patent No.; but parts are more; weight is heavier; installation step is also more loaded down with trivial details; pile has encapsulated, and volume is also bigger than normal.

The patent No. is that 201220005574.4 utility model patent is simple and easy attractive in appearance, easy to assembly, cost is low, can realize basic demands such as water proof and dust proof again, but do not consider the actual operating position of base station stand-by power supply, the insulation construction of not design necessity, using in low temperature environment to have extra low-temperature cool starting technical support, system complexity improves, and cost rises.

All only consider conventional func such as attractive in appearance, the simple and easy and water proof and dust proof of encapsulation, pre-anti-leak for above-mentioned fuel cell package shell mechanism, at the heat insulation function of outdoor low temperature environment designing fuel cell, be not suitable for the outdoor base station standby power system.

The utility model content

Because the problems referred to above that prior art exists, the purpose of this utility model is not to be suitable at existing fuel cell package shell the designing requirement of low temperature environment, a kind of self-heat conserving formula package casing design that can be used for base station stand-by power supply fuel cell pile is provided, can effectively keep the fuel cell pile environment temperature, be beneficial to the low-temperature cool starting of fuel cell.

For achieving the above object, the utility model is achieved through the following technical solutions.

A kind of self-heat conserving package casing for base station stand-by power supply fuel cell pile comprises left and right two halves double sheets structural housing, and shell is built-in with heating wire, and the insulation layer is close to the heating wire layer and is become outer casing inner wall; Sealing strip is pasted in described left and right two halves double panel structure shell encapsulation junction, and is fixedly installed on the fuel cell pile with nut.

As further feature of the present utility model, described heating wire connection 12V or 24V storage battery.

Whole package casing is simple and easy to loading and unloading, when routines such as playing water proof and dust proof acts on, can keep the temperature of fuel cell surrounding environment, has ensured the steady clean boot of fuel cell under low temperature environment, has guaranteed the normal operation of stand-by power supply.

Description of drawings

Fig. 1 is the shell mechanism schematic diagram.The 1st, double sheets structure, the 2nd, heating wire, the 3rd, heat-preservation cotton thermal insulation layer.

Fig. 2-A, 2-B are that shell touches part surface subsides gasket structure schematic diagram to pegging graft.The 1st, double sheets structure, the 5th, sealing strip.

Fig. 3 is shell assembling schematic diagram.The 1st, double sheets structure, the 4th, clamp nut, the 5th, sealing strip.

Embodiment

Below by the utility model is described in further detail in conjunction with the accompanying drawings and embodiments:

As shown in Figure 1, at first shell is processed, with 2 sheet material welding, formed double sheets structure 1, and be bent into required shell shape (being square structure among the figure), be embedded into heating wire 2 then, and then paste the thick insulation layer 3 of 2mm at internal layer.

Shown in Fig. 2-A, 2-B, paste sealing strip 5 in the double sheets structural housing junction of left and right two halves, play the effect of pile encapsulation water proof and dust proof.

Assemble as shown in Figure 3 at last, left and right two half-shells are aligned be enclosed within the pile outside, by 16 clamp nuts 4 that shell and pile is fastening.

To encapsulate the pile standby power system of packing at last, heating wire 2 two ends are connected 12V or 24V storage battery, the usefulness because the base station stand-by power supply need be powered under powering-off state temporarily, so keep holding state at any time, heating wire 2 keeps the "on" position persistent fever to keep the fuel cell pile environment temperature, guarantees that fuel cell starts smoothly in low temperature environment.

But above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses do anyly be equal to change or modify, all fall into the scope that this patent comprises.

Claims (2)

1. self-heat conserving package casing that is used for base station stand-by power supply fuel cell pile, it is characterized in that: comprise left and right two halves double sheets structural housing, be equipped with the heating wire layer in the shell earlier, the insulation layer is close to the heating wire layer and is become outer casing inner wall; Sealing strip is pasted in described left and right two halves double panel structure shell encapsulation junction, and is fixedly installed on the fuel cell pile with nut.

2. self-heat conserving package casing according to claim 1, it is characterized in that: described heating wire layer connects 12V or 24V storage battery.

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