| The electric installation increases unceasingly along with the automobile on, also gradually increases to the mains input demand. Some experts estimated achieves 7500W to 2007 annual meetings. If achieved this kind of high efficiency the electricity consumption, may obtain the strength of current from P=UI, but this electric current is at present alternator cannot provide. Moreover power boosting causes the electric current to increase inevitably, then the request adds the thick wire, like this will develop on the vehicle main group of lines to be thick like the arm, will cause the electric appliance part the volume fill-out, the finite space is taken. Moreover, the power loss also can cause the alternator the efficiency to reduce. This phenomenon has aroused the international automobile industrial world enormous interest, but uses the new electrical system also is imperative.In new electrical system, some two kind of implementation plan: One kind is the entire vehicle 42V univoltage plan; another kind is the 42V/14V double voltage plan. The former can also have the significant impact to the present automobile spare parts manufacture, the latter attacks slightly, the transition is gentle. Therefore the automobile industry favors the second kind of plan. This article in synthesizes the domestic and foreign correlation research in the foundation, has conducted the system comprehensive research to the 42V/14V double voltage electrical system technological development as well as the present situation, and will be supposed to serve as the further forecast to the future 42V electrical system on the automobile. This article main research content is as follows:â‘ New 42V automobile electrical power system research. Discusses the 42V electrical power system to the automobile spare part for example engine, the electric motor, the solenoid valve, the lighting system, the terminal switch as well as the entire vehicle influence. Proposed one kind of relatively reasonable accumulator cell design proposal.â‘¡Given several kinds of plans has realized the 42V/14V double voltage vehicle to carry the electrical system, which has made the thorough analysis and the discussion to each kind of plan good and bad points as well as the performance.â‘¢Introduced the 42V electrical system core installment - integration start generator system principle of work and the composition. In refers to the domestic and foreign correlation research and in the material foundation, proposed one kind of ISA system design proposal.â‘£The brief analysis of the reason and the suppression method which produced to the transient state high pressure has carried on.Through this article regarding the 42V/14V double voltage electrical system related engineering research, regarding completed the 14V automobile electrical power system to provide one way now to the new 42V automobile electrical power system transition. And through realizes the 42V/14V double voltage system performance analysis to several kinds, has selected the most suitable one kind of achievement solution. Through analyzes each kind of plan the performance and the insufficiency, provides the mentality for the better solution appearance.In brief, the automobile electrical power system developed at present by the 14V power source to the 42V power source already was the inevitable tendency. As the transitional stage, to the 42V/14V double voltage system research could be an automobile industry recent time important content. The 42V automobile power supply system standard implementation will bring the huge impact to the automobile electric appliance and the electronic installation; simultaneously will also be able to give the entire automobile industry to bring the new turn technological revolution.
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