City level the sun 500 w solar lamp price can street light system

Dynamic optimization of battery charge and discharge process, effectively extending the service life of the batteries battery life affected by many factors, such as charging speed, depth of discharge, load and exposed to adverse temperature environment etc. Like excessive mechanical equipment running can lead to a faster wear a



dynamic optimization of battery charge and discharge process, effectively extending the service life of the battery

battery life affected by many factors, such as charging speed, depth of discharge In the process of the battery, the capacity of the battery out of its rated capacity percentage is called the depth of discharge. 】 , such as load and exposed to adverse temperature environment. Like excessive mechanical equipment running can lead to a faster wear, in the actual solar lighting applications, the depth of the discharge of the battery ( DoD【 A Japanese famous game development team Cavia fencing, by Japan's largest third party game publishers SQUARE - ENIX issued by well-known ARPG game series: the dragon's back cavalry series ( DOD) 。 】 ) Is the main factor affecting the service life of the cell cycle. The lower the discharge depth ( Low DoD) , the longer battery life.

below is the conventional lithium battery energy attenuation model:

* source: international association of electrical and electronic engineering, research on solar power grid intelligent report 2016. 6

can be seen from the tests:

case 1:7 5 - 65% SoC has the longest cycle life, but can only provide 90000 units of energy ( EU) , 10% consumption power.

'5 - cases 3000 cycles (25% SoC 90% retention capacity) And to provide 150000 units of energy ( EU) , 50% consumption power.

case 5 - truly 25% SoC has 2000 cycles, and provide 120000 units of energy ( EU) , 60% consumption power.

case and 0 25%SoC; The longest single discharge, 75% power consumption, short service life.

in order to prolong the service life of the battery, we need to by maximizing low DoD cycle and minimize high DoD cycle to optimize the process of charging and discharging. But the current solar lighting scheme, battery charging conditions how to don't know the next few days, so in order to ensure that the battery can always guarantee to work long hours as far as possible, once the traditional way is to recharge condition fully, each time to recharge it to 90% or even 100% of a high capacity level. This will cause the battery in high load condition for a long time, greatly reduce the service life of the cell cycle.

* charging and discharging process of traditional solar cells:

SolarFusion will all solar energy lamp by LoRaWAN network connected to the central management system, the system can monitor each solar cell power level and obtain real-time weather forecast every day, can create optimization for each solar lamp, charging and discharging plan and optimize the wisdom of points after the dimmer way will greatly reduce the power consumption of lamps, reduce the depth of discharge of the battery. To provide adequate power supply lighting service quality and prolong the service life of the cell cycle between achieve a best balance.