The liquid-cooled thermal management system based on a flat heat pipe has a good thermal management effect on a single battery pack, and this article further applies it to a power battery system to verify the thermal management effect. The effects of different discharge rates, different coolant flow rates, and different coolant inlet temperatures on the temperature distribution uniformity of the power battery system were analyzed, and the effectiveness of the flat heat pipe in improving the thermal equilibrium performance of the liquid-cooled thermal management system was verified.

The change of the geometry of the flow field plate will affect the distribution of reaction gas and further change the reaction rate inside the cell. This article uses computational fluid dynamics as a research method to observe the improvement of fuel cell performance of different channel geometries. In the single-channel simulation, channel of different shapes has very limited influence on current density, but it will change the water saturation, especially near the outlet of the channel. In this research, the performance of a variable waveform flow field plate is relatively better. This will be conducive to the promotion and application of proton-exchange membrane fuel cells in real life.

Many factors affect the performance of hydrogen–oxygen proton-exchange membrane fuel cells; there are not only operating parameters, transmission, and electrochemistry inside the battery but also physical composition and bipolar plates. In this paper, the geometric configuration and parameters of the runner have been studied. The performance of a rectangular runner and trapezoidal runner was compared, and it was found that the performance of the trapezoidal runner was better. Therefore, the influence of the inlet angle and height of the outlet runner on the performance of the trapezoidal cross-section battery is discussed. The goal is to find a trapezoidal cross-section fuel cell with the most superior performance.

No abstract

Hydrogen consumption and mileage are important economic indicators of fuel cell vehicles. Hydrogen consumption is the fundamental reason that restricts mileage. Since there are few quantitative studies on hydrogen consumption during actual vehicle operation, the high cost of hydrogen consumption in outdoor testing makes it impossible to guarantee the accuracy of the test. Therefore, this study puts forward a test method based on the hydrogen consumption of fuel cell vehicles under CLTC-P operating conditions to test the hydrogen consumption of fuel cell vehicles per 100 km. Finally, the experiment shows that the mileage calculated by hydrogen consumption has a higher consistency with the actual mileage. Based on this hydrogen consumption test method, the hydrogen consumption can be accurately measured, and the test time and cost can be effectively reduced.