Valve regulated batteries-losses of water and hydrogen through the valves and the battery containers at elevated temperatures
During accelerated testing of valve-regulated (VR) batteries there have been uncertainties about the failure modes and the accelerating factors involved. An experimental study has been performed with the batteries in an enclosed environment where the gases given off by the battery at elevated temperatures have been measured. The diffusive leakage of water and hydrogen as well as the vented gases have been measured. The results are discussed in terms of rate of dry out and corrosion. The influence of different VR-technologies is also discussed. >
On the base of building a HEV propulsion model,the simulation synthesis for a closedloop control system of a given HEV is built.By analysing the virtual velocity output and the desired input torque on the time domain of the HEV at different target velocitys and controller parameters,we has found that it is difficult to achieve both the objects of consumption minimization and dynamic function optimization using the conventional control strategies for HEV.In this paper,a control method for the HEV propulsion system based on the dynamic process is proposed,and its principle and implement are discussed.