A vehicle-mounted lightweight high-pressure metal hydride composite hydrogen storage tank

Abstract

The invention designs a vehicle-mounted light-weight high-pressure metal hydride combined type hydrogen storage tank. The vehicle-mounted light-weight high-pressure metal hydride combined type hydrogen storage tank comprises a tank-shaped metal lining; a fiber reinforced layer and an outer fiber winding layer are wound around the metal lining in sequence; a left end plug and a right end plug are arranged at the two ends of the metal lining respectively; a plurality of gas guide metal isolation filtering plates which are arranged at intervals in the axial direction of a tank body are arranged in an inner cavity of the tank body; a plurality of hydrogen storage metal substrates which are arranged in the axial direction of the tank body are distributed between the adjacent gas guide metal isolation filtering plates; hydrogen storage metal is deposited on the metal substrates made of conductive metal so as to form alloy sheet structures; the alloy sheet structures are supported by the gas guide metal isolation filtering plates and are divided into two parts; and a plurality of groups of heat conduction pipes are uniformly distributed in gaps between the hydrogen storage metal substrates and penetrate through the right end plug to be connected to an external pipeline. The vehicle-mounted light-weight high-pressure metal hydride combined type hydrogen storage tank has the advantages that the structure is simple, the nominal working pressure is not less than 35MPa, the heat conduction performance is good, the volume of the hydrogen storage metal structure accounts for less than 50% of the volume of the tank body, the hydrogen storage capacity of the vehicle-mounted light-weight high-pressure metal hydride combined type hydrogen storage tank is more than 1.5 times higher than the hydrogen storage capacity of a high-pressure hydrogen storage tank with the same specification.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage, and in particular relates to the design of a 35MPa vehicle-mounted lightweight high-pressure metal hydride composite hydrogen storage tank. Background technique [0002] Energy is the material basis for the existence and development of society. With the process of industrialization and the improvement of people's living standards, the demand for energy is increasing day by day. The fossil fuels that modern industry relies on have limited reserves, are non-renewable, and have problems such as environmental pollution during use. Therefore, it is imminent to find renewable green energy. As a clean and efficient secondary energy source, hydrogen energy is considered to be an ideal energy source to replace traditional fossil fuels. In the hydrogen energy system, the safe storage of hydrogen is the most critical link. [0003] Commonly used hydrogen storage technologies mainly include high-p...

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Problems solved by technology

High-pressure gaseous hydrogen storage mainly uses large-capacity gas tanks and steel cylinders to store gaseous hydrogen, which has a high mass hydrogen storage density, but its volume hydrogen storage density is low, high pressure, and poor safety, and pressurization equipment is required to compress hydrogen. The cost and energy consumption are increased, and the compression of pure hydrogen will also lead to a decrease in the purity of pure hydrogen; low-temperature liquid hydrogen storage has a high hydrogen storage density, but it consumes a lot of energy and costs, and has strict requirements on heat insulation devices, and there are volatilization losses and Poor safety and other issues; solid-state hydrogen storage using hydrogen storage materials is to store hydrogen storage materials in airtight containers, and use the hydrogen absorption capacity of hydrogen storage materials to achieve solid-state storage of hydrogen, which has a high volume hydrogen storage density, even higher than liquid The volumetric hydrogen storage density of hydrogen is even higher, but its gravimetric hydrogen storage rate is relatively low, and the hydrogen absorption and desorption process is limited by heat transfer, making the filling and discharging rate of solid-state hydrogen storage devices slower

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