1. Battery selection In the whole system design, especially in the application of the principle, the overall function of the system battery is to be in the case of light, the solar cell group found the power of Hu's storage, in the absence of power to give and release, from the current solar electric vehicle battery utilization, mainly choose lead-acid batteries, Ni-CD battery or lithium-ion battery, Ni-MH battery, among them, the specific application effect of the battery to do in-depth analysis, from the battery's continuous working time, the daily discharge amount, the overall capacity, self-leaking power and other aspects of the overall design, from the needs of this study, the main use of battery parameters for 7.2v/
24Ah sealed lead-acid sealing battery for good design and application.
2. Motor Selection and application In the type selection of solar electric vehicles, from the use of the situation, mainly AC induction motor, Permanent magnet synchronous motor and DC motor. From the point of view of the design of the charging system, various motors have different characteristics and application performance, especially the current use of AC induction motor has the disadvantage of reduced efficiency, and permanent magnet synchronous motor price is too high, and the DC motor starting speed, control simple, is suitable for solar battery car needs, so select DC motor. The specific control parameters are: Operating voltage: 4.8-7.2v, no load speed: 0.23 seconds/60 degrees (4.8V), 0.2 seconds/60 degrees (6V). The PWM1 and PWM2 change the motor voltage by changing the duty ratio, thereby adjusting the speed.