You know what? More and more household energy storage systems are now using lithium iron phosphate batteries, like installing a high-capacity "power bank" at home. But why does it happen to be it? Today, let's break it apart and talk about this matter.
Safety first, not being able to ignite is the absolute principle
What is the biggest fear of home energy storage? Fire up! The ignition point of lithium iron phosphate batteries is much higher than that of ordinary lithium batteries, making it difficult to set the flame of a lighter to its maximum setting. The experimental data is even more exaggerated: even if it is heated to a high temperature of 72 ℃ (hotter than a sauna), it can still maintain a stable state. It's like building a house with fireproof bricks, your neighbor's circuit short circuits and sparks, but your battery cabinet can still remain calm.
Life is even more like crushing opponents directly. A regular lithium battery may wilt after 1000 cycles of charging and discharging, but lithium iron phosphate can easily withstand 2000 cycles - calculated based on charging once a day, it can last for more than five years; If you charge every three days, you can go straight to eight years. What's even more amazing is that high-quality batteries have a capacity decay of less than 5% in the first year, controlled within 15% in the second year, and can still retain 70% of their power after ten years. Imagine that the phone you bought has been in use for ten years and can still be on standby for a whole day. The cost-effectiveness is simply amazing!
Chemical properties as stable as a rock
This battery also has a hidden skill: not afraid of the 'memory effect'. Like a child who is not picky about food, he will not lose his temper and reduce his capacity when charging or discharging casually. The self discharge rate is also absurdly low, with over 80% remaining after half a year of fully charged discharge. It's like hoarding a box of apples, and after three months, it doesn't spoil much! Home energy storage often needs to deal with sudden power outages, and this "on call" feature is crucial.
Dual buff of environmental protection and cost saving
Although the resale value of lithium iron phosphate batteries in the second-hand market is low, who among household users spends their days changing batteries? Long term accounting is actually more cost-effective. 2000 cycles mean that it can help families get through 2000 electricity price peaks (such as storing solar energy during the day and using it at night), and cutting half of the electricity bill directly is not a dream. Not to mention that it does not contain precious metals such as cobalt, and its recycling process has minimal environmental pollution, making it an operation that "earns money and reputation".
May it be replaced in the future?
Of course, it is not perfect either. Scientists are tinkering with solid-state batteries to completely solve safety issues with non combustible materials. But at present, lithium iron phosphate is like a "bucket player" in smartphones - there are no fatal shortcomings, and the price, performance, and safety are all up to standard. The next time you see the white cabinet next to the rooftop solar panel, you will know that inside is a "power butler" who can accompany you through ten years of wind and rain.
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