The development of new energy sources is the general trend. Solar storage batteries are bound to develop at a high speed. Photovoltaic power generation systems have low conversion efficiency, high costs, and no corresponding supporting laws and regulations to encourage development. This makes the development of photovoltaic systems slower. Photovoltaic systems are composed of solar storage batteries. It consists of battery packs, charge and discharge controllers, inverters and other equipment. The function of each part of the equipment is: (1) Solar storage battery square array: In the presence of light, the battery absorbs light energy, and the accumulation of different signs of charge appears at both ends of the battery, which generates 'photovoltaic voltageeffect'. Under the action of the photovoltaic effect, the two ends of the solar cell generate electromotive force to convert light energy into electric energy, which is an energy conversion device. Solar cells are generally silicon cells, which are divided into monocrystalline silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells. (2) Battery pack: its function is to store the electric energy generated by the solar cell array when exposed to light and can supply power to the load at any time. (3) Controller: Automatically control the selection of power, choose between mains power, solar power, and battery power to charge the battery. (4) Inverter: It is a device that converts direct current into alternating current. The consistency of each single cell of solar battery: The consistency mentioned here not only refers to the open circuit voltage and initial capacity of the battery, but also includes the internal resistance, self-discharge, and charging efficiency of the battery. This requires sufficient manufacturing accuracy. That is to say, the four functional tests from lead powder, cast film, paste, smear, curing, forming, dry assembly, acid addition, charging to the final test must be controlled within a small tolerance range, so the solar battery adopts machine casting, Machine coating, assembly machine assembly and precise acid injection are reliable guarantees to ensure battery consistency and minimize human factors.