u003cpu003e With regard to the development of the Japanese household energy storage market and related technologies, it focused on the smart housing test of Japanese real estate company Sekisui House and the V2H (Vehicle to Home) technology being actively developed by Japan's three major car companies. Sekisui Jianfang launched a smart home product equipped with three types of batteries: fuel cell, solar cell and energy storage battery in 2011, which is the first in Japan. Among them, the fuel cell is a 700W or 750W household solid oxide fuel cell (SOFC), the solar cell is 3kW～6.4kW (mainly provided by Sharp), and the energy storage system (including power conversion device and HEMS) uses GS Yuasa. Lead-acid battery pack
s, Panasonic lithium battery pack
packs and Leaf car battery packs. Based on a large number of empirical experimental data, Sekisui Building has reached some conclusions. For example, houses with three types of batteries can only be promoted by some consumers who are very concerned about safety in emergency situations (because of the 310 Ten thousand yen is obviously not worth the increased expenditure for the installation of these three types of batteries), if it is to be popularized, the price of the battery must be reduced to less than 30,000 yen/kWh. If, with the development of smart grids, Japan begins to implement dynamic pricing with a price change system in which electricity prices change drastically with demand,' electricity prices will increase when there is a shortage of electricity, and the gap with normal electricity prices will increase, thus speeding up battery cost recovery. The company said that the popularization of this kind of smart energy house is that the cost recovery time is half of the equipment life.u003c/pu003eu003cpu003eGreen First HybridGreen First LiBu003cpu003eGreen First V2Hu003c/pu003e Time to market 2011 08 August 08, 2012 October 01, 2012 October 01, 2012 Battery type Lead-acid battery Li-ion batteryu003cpu003eCar lithium-ion batteryu003c/pu003e Battery pack capacity 8.96kWh4.65kWhu003cpu003e24kWhu003c/pu003eu003c pu003eUsing methods in normal timesu003c/pu003eu003cpu003eYou can use 4.4kWh of them, can automatically charge in the middle of the night, discharge during the day, and can use electricity at peak shifts.u003c/pu003eu003cpu003eYou can use 2.3kWh of them, and can automatically Charging in the middle of the night, discharging during the day, and peak-shifting poweru003c/pu003eu003cpu003eIt can automatically charge in the middle of the night and discharging during the day, and it can use the peak-shifting power, but it can only be used when the EV is stopped.u003c/pu003e Switching u003cpu003eAs long as the EV is present, it can be manually switchedu003c/pu003eu003cpu003eMaximum output power during power failureu003c/pu003eu003cpu003e2.5～3kW, can output 100V/200V voltageu003c /pu003eu003cpu003e2kW, can only output 100V voltageu003c/pu003eu003cpu003e6kW, can output 100V/200Vu003c/pu003eu003cpu003eVoltageu003c/pu003eu003cpu003eLinked with fuel cell during power failureu003c/pu003e pu003eu003cpu003eu003c/pu003eCan it be possible or not?u003cpu003eLinkage of solar battery and energy storage batteryu003c/pu003eu003cpu003eDon’t charge with emergency socket, you can use all remaining poweru003c/pu003e without emergency socket , Can use all the remaining power u003cpu003eCannot chargeu003c/pu003eu003cpu003eIn emergency (power outage, gas outage, etc.)u003c/pu003e Use solar battery power to charge, and can use solar battery power continuously in sunny days Charging, can be used continuously in sunny days u003cpu003eThe maximum is 24kWh and can be used up completelyu003c/pu003e Whether to support HEMS Yes Yes Yes Battery supplier GS Yuasa Panasonicu003cpu003eu003cpu003eNichicon (AESC)u003c/p u003eu003c/pu003eEnergy storage system price 2 million yen (including power regulator and HEMS)u003cpu003e1.7 million yen (including power regulator and HEMS)u003c/pu003eImported lithium-ion batteries for stationary useu003cpu003e57 Ten thousand yen (only guide equipment and installation costs)u003c/pu003eCorresponding allowancesu003cpu003eHEMS introduction businessu003c/pu003eu003cpu003ePromotion of countermeasure business subsidies and HEMS introduction businessu003c/pu003eu003cpu003eClean Energy vehicle Entry countermeasures subsidyu003c/pu003eu003c/pu003eu003c/pu003e
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