Portable apparatus fuel battery system and its operation method

Abstract

The invention relates to a fuel cell system for a portable device. The portable device has heat components. The fuel cell system comprises: a fuel cell body in which chemical reaction occurs to provide electric energy, with water contained in the generated reaction products, a fuel supply and cycle driving device which controls fuel amount and/or fuel flow rate inside a fuel cycle ring according to the fuel concentration and/or fuel temperature, a water cycle driving device which controls water quantity and/or water flow rate in a water cycle ring according to the fuel temperature and temperature of the heat components, the fuel cycle ring constituting a ring between the fuel cell body and fuel supply and cycle driving device, by which fuel is supplied to the fuel cell body and residual fuel is brought back to the fuel supply and circle driving device, the water cycle ring constituting a ring in which water in the reaction products flows, and a heat exchange unit of double circulation, wherein, heat exchange occurs among the fuel cycle ring, the water cycle ring and the heat components.

Description

technical field [0001] The present invention relates to a fuel cell system for portable equipment, and more particularly, to a fuel cell system with primary and secondary circulation loops and dual circulation heat exchange units and its operating method. Background technique [0002] With the vigorous development of information technology, the functions of portable electronic devices are becoming more and more powerful, and the power consumption increases accordingly. In order to meet a certain use time, the demand for energy of portable devices is also increasing. However, in order to reflect the portability, the volume of portable devices has great limitations, and people always hope that the smaller the volume, the better. Therefore, the contradiction between the function, time, volume and energy of portable devices is a very real problem. At present, lithium secondary batteries are widely used in portable devices. Since the performance indicators of lithium secondary b...

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Problems solved by technology

The boiling point of pure methanol is 64.7°C, so it cannot be applied to this technical solution for pure methanol fuel

Because vaporized pure methanol can cause safety hazards in closed liquid circulation lines

Since pure methanol cannot be used, the effective energy density of this solution is low, and the energy available using the same fuel tank is low

[0016] 3. Due to the fact that portable devices, such as notebook computers, actually generate a lot of heat, this technical solution only relies on the single liquid circulation method of the front-end fuel supply line, and it is difficult to effectively cool the heat-generating components and improve the efficiency of the fuel cell at the same time.

[0017] 4. The fuel temperature control method of this technical solution only relies on flow control, and the method is single

This scheme does not effectively reuse the product water, but directly volatilizes it, which is only a treatment for heat dissipation, which is a waste of resources

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