Mr. Wang and his family are advocates of environmental awareness. They already have an electric car at home, and they are also exploring how to further reduce household carbon emissions and improve energy efficiency. To this end, Mr. Wang decided to install a home energy storage system, combined with an electric car charging station, to achieve the dual benefits of green travel and home energy storage.

Problem Analysis:

1. Energy integration and optimization : How to effectively integrate household electricity, electric vehicle charging and energy storage systems to maximize energy utilization.

2. Charging and discharging strategies : Develop appropriate charging and discharging strategies to ensure that EVs can be quickly charged when needed, while utilizing EV batteries as part of home energy storage.

3. Policies and subsidies : Understand and utilize local government subsidy policies for new energy vehicles and home energy storage systems to reduce investment costs.

Solution:

· Smart Charging and Energy Storage System : A comprehensive system consisting of photovoltaic panels, energy storage batteries and smart charging piles has been installed. The charging and discharging strategies are optimized through intelligent algorithms, and solar power is used to charge electric vehicles first. Excess power is stored in energy storage batteries for home use.

· Policy utilization and subsidy application : Mr. Wang studied the local government’s subsidy policy in detail and successfully applied for installation subsidies for photovoltaic systems and energy storage systems, which greatly reduced the initial investment costs.

· Community sharing : Mr. Wang also proposed a community sharing plan, inviting neighbors to join in and jointly build a microgrid to achieve community sharing and optimization of energy, and further promote the development of low-carbon living.

The above three cases demonstrate the application and innovation of household energy storage systems under different household needs, and reflect the important role of household energy storage systems in improving energy utilization efficiency, ensuring electricity safety, and promoting green living.