First, battery life: the core index of long-term durability of the whole machine

The energy storage lithium battery is the core consumable part of the solar projection lamp, and the service life and endurance

stability of the whole machine mainly depend on the cycle performance of the battery. Lithium battery will produce normal

capacity attenuation during long-term charge and discharge cycle, which belongs to normal equipment loss. The industrial high-

quality special lithium battery for energy storage has a standard cycle service life of 1,000-1,500 charge and discharge cycles,

and the theoretical normal service life can reach 3-5 years according to a complete charge and discharge every day and night.

The actual service life of the battery is not a fixed value, which is greatly affected by charging conditions. Long-term rainy

weather and insufficient illumination lead to frequent shallow charging and deep discharging of batteries, which will accelerate

the aging of batteries, cliff-like attenuation of capacity and greatly shorten the service life of equipment. Therefore, for the long-

term selection of household and outdoor, it is suggested that the lamp system equipped with trickle charging technology: when

the battery is low, the system will automatically reduce the charging power and replenish the power stably, so as to avoid battery

damage due to power shortage, effectively delay the battery attenuation and significantly prolong the service life of the whole

machine.

Second, material configuration and protective heat dissipation: the hardware foundation of outdoor weather resistance

The material of lamp body, light-transmitting fittings, waterproof grade and heat dissipation structure directly determine the

outdoor anti-corrosion, anti-aging and anti-damage ability of lamps, which is the hardware guarantee for long-term stable

operation of equipment.

In terms of shell material, aviation grade aluminum alloy fuselage has stronger impact resistance, corrosion resistance and

aging resistance compared with ordinary plastic shell, which can effectively resist outdoor sun oxidation, rain corrosion and

slight bump, and is suitable for open deployment all year round; Tempered glass lampshade is preferred as the light

transmission part. Compared with acrylic material, it has the advantages of high light transmission, scratch resistance, no

atomization and no yellowing. Long-term use can stabilize the light transmission and avoid the brightness from declining

year by year.

In terms of protection level, IP65 can completely prevent dust and resist all-weather rain spray erosion, and meet the outdoor

use of conventional courtyards and squares;

Heat dissipation structure is a key configuration that is easily overlooked. High-power operation of lamps at night will

continue to

generate heat. If the heat dissipation cavity is not designed properly and the heat dissipation is not smooth, it will accelerate

the pearlescent decay of LED lamps and the aging of driving power supply, and even lead to the burning of internal

components in severe cases. High-quality lamps adopt integrated heat dissipation structure, which can quickly export the

heat of the whole machine, stabilize the working temperature, ensure the continuous and stable operation of the equipment

under high temperature and high load conditions, and reduce the later failure probability and maintenance cost from the

hardware level.

Third, the installation environment and daily operation and maintenance: the details determine the actual life of

the equipment.

The difference between the installation environment and the daily maintenance of the solar projector with the same

configuration will directly widen the service life gap of the equipment, and the unreasonable installation conditions will

greatly shorten the service life of

the equipment.

If the lamps are installed in the shaded area and the backlight area of the building, the lighting of the photovoltaic module

is limited, and the charging efficiency is reduced by more than 30% compared with the same period of last year, and the

battery loss rate is greatly accelerated; In the environment with more dust and dust, the accumulation of dust on the

surface of photovoltaic panel and lampshade will directly reduce the illumination brightness by 20%-50%, and at the same

time block the cooling holes, resulting in poor heat dissipation of the whole machine, excessive internal accumulated

temperature and accelerated aging and damage of components.

Daily standardized operation and maintenance can effectively avoid the above problems: it is recommended to use soft

cloth to clean the dust and sundries on the surface of photovoltaic panels and lampshades every month to keep the panels

transparent and the cooling holes unobstructed; When installing, give priority to the sunny spot with no shelter and

sufficient lighting, so as to ensure the charging efficiency and maximize the service life and operational stability of the

whole solar projector.

Relying on years of industry cultivation and technology precipitation, Guangdong Guangyun Lighting Co., Ltd. is

comprehensive high-tech lighting enterprise integrating product research and development, large-scale production,

global sales and professional after-sales. The company always adheres to the core business philosophy of "quality as the

foundation and customer as the center", and provides customers customers with high-quality photovoltaic lighting

products and supporting solutions with strict production standards an perfect service system. This paper systematicallyexplains the professional selection criteria of outdoor solar projection lights from core dimensions.