How much do you know about fuel cells for testing technical equipment?

Fuel cell is a chemical device, also known as electrochemical generator, that converts the chemical energy of fuel directly into electrical energy. It is the fourth generation technology after hydroelectric power, thermal power and atomic power. Since fuel cells convert the Gibbs free energy portion of the fuel's chemical energy into electrical energy through an electrochemical reaction, they are highly efficient, and since they are not subject to the Carnot cycle effect, the use of fuel cell fuel and oxygen as raw materials, and mechanical drive components, they emit very little hazardous emissions and have a long service life. Therefore, from the point of view of energy saving and environmental protection, fuel cells are the most promising technology for power generation.

Fuel cell testing is an inevitable condition to realize the continuous progress of fuel cell technology.battery pilot machine Fuel cells will help reduce pollution and greenhouse gas emissions. Once the demand for battery manufacturing increases, the demand for its testing is bound to increase.

The basic performance tests of key fuel cell components covered by the national standards mainly include: proton exchange conductivity, ion exchange equivalent, tensile properties, water absorption, swelling rate, thickness uniformity and permeability of proton exchange membrane; PT content test, specific surface area, pore volume, pore size distribution, morphology and particle size distribution, catalyst density and electrochemical active area; thickness uniformity of carbon paper, electrical resistance was determined, mechanical strength, permeability, porosity and apparent density of carbon paper; thickness uniformity, platinum loading, single-cell polarization curves, hydrogen permeation current, activated polarization overpotential and ohmic polarization overpotential of bipolar plates; and airtightness, resistance, area utilization, thickness uniformity, flatness and resistance of bipolar plates.

Main features of the fuel cell test equipment.

① Isolation. Fuel cell test information system first students to analyze a variety of issues need to be tested through signal conditioning. Then according to the original signal in order to have data technology acquisition control system to achieve digitalization. Large-capacity power stack with hundreds of single cells. Thus increasing the voltage measurement requirements several white volts of common mode rejection.battery laser welding machine Therefore, the test method not only we must develop a number of channels with each channel can read l-10V channel. But also companies must be able to maintain up to hundreds of volts of isolation between each and the last cell of the stack.

The data acquisition system must be scalable. Fuel cell test systems have anywhere from 100 to more than 1,000 channels. Therefore, data acquisition systems must be scalable. These systems also require signal attenuation and amplification.

③ Modularity. Modularity is also necessary for today's test systems. This is because the test system must be able to change with changes in production and validation techniques.

Any test system should be calibrated to ensure valid and accurate measurements.

Common test methods for fuel cell environmental test devices

Fuel cell working environment for the test device is a fuel cell test to analyze the more common equipment, in the use of time to pay more attention to its common failure problems and safety hazards, to avoid students to produce some of the corresponding failures.

In the fuel cell working environment factors test device refrigeration process, the inner machine will appear dripping water, this is not the fuel cell management environment analysis test device use normal social phenomenon, but the enterprise due to the installation of non-standardized own caused. In the fuel cell market environmental impact test device after installation, immediately test machine (refrigeration), if we run a certain role in time to learn no water dripping under the basic information will not lead to the emergence of water leakage problems. Of course, can also be installed according to the requirements of the construction personnel side of the leakage test, to the inner machine into the water, water through the machine water catchment tray, downpipes naturally out of the outdoor as normal.

The operation of the fuel cell environmental test device will produce some noise, but if the noise is too loud, it may be caused by improper installation. When installing, the wall plate of the inner unit is not nailed down firmly and the inner unit is not fixed, which can easily lead to excessive noise. In this case, the installer can easily find and correct the problem through the test run.

The installation location of the fuel cell environmental test device is also very special. It doesn't mean that users can install it in any place they like, otherwise, it will lead to consequences such as maintenance failure and poor cooling effect, etc.battery packing machine Families should avoid heavy fumes, sand, direct sunlight, poor heat dissipation, or high temperature heat sources, and also flammable gases that are easy to leak, the presence of strong corrosive gases, and the direct influence of man-made strong electric or magnetic fields, and other hidden dangers.

Fluorine leakage can occur if the joints of the fuel cell environmental test device are not tightened and cracked. If the fuel cell environmental test device leaks fluorine, the user should often replenish, normal use of the fuel cell environmental test device generally do not need to add refrigerant for several years. Check refrigerant leakage before commissioning. Leak detection is mainly for the four interfaces of the internal and external mechanical connection pipes and the valve ports of the shut-off valve in the household fuel cell environmental test device. Soapy water (detergent can also be used) leak detection is one of the common methods used in the field. After the valve is opened for 10 ~ 15 seconds (20 ~ 30 seconds for the cabinet), the valve is closed, and all parts of the system are rapidly charged with gaseous refrigerant at an air pressure greater than 0.8Mpa, and soapy water is applied at the suspected leakage point. If bubbles form, there is leakage, observe 3 minutes without bubbles appear, can be considered qualified.

Formal installation staff, before installing the fuel cell development environmental factors test device will analyze and check the power supply technology of the business user, if it does not meet the design requirements, it will be recommended that the user can change. Power line does not meet the specifications and installation, easy to lead to the phenomenon of leakage and fire, endangering the personal safety of users. Installation managers are required to use relevant power testing tools to effectively detect power problems.

As the fuel cell environmental test equipment for fuel cell test, its performance is a certain requirement, so the fuel cell environmental test equipment above the fault try to avoid.